Hermetic compressor

Hermetic compressor occurs:

1 - as a steel casing consisting of two parts welded electrically to one another and a cylindrical shape.
2 - 2 so that envelope suction pipe, one for the vapors sucked up, the other for filling refrigerant) and a discharge pipe are welded to the envelope.
3 - fixing lugs are welded to the envelope, on which are also located the terminals of the electric motor of the compressor.


role:
its role is to inhale the vapor produced by the evaporation of the refrigerant in
the evaporator has a low pressure, and discharging at a high pressure vapor such
compressed in the condenser.

Principle of operation:

Compressor operation involves two basic steps: the suction and discharge.

Aspiration:

When the engine is in operation, the rotor rotates and drives a crankshaft which allows the piston to descend in the cylinder by means of the connecting rod. During this phase, the valve 2 opens to the entrance of the refrigerant from the refrigerant circuit of the appliance (gas) in the room.

Refoulement:

After entering the refrigerant gas, the piston continued his run and compresses the room. the valve 2 closes tightly. Under pressure the valve 1 can then be opened and exhausting the fluid from directly in the refrigerant circuit of the device. The cycle can then resume

During step 1.

Exploded view of a compressor:

legend:

1 - Cylinder (Power Metal)
2 - suction guide (Oriente gas to the chamber of the cylinder)
3 - Head (Seals between cylinder and valves)
4 - valves (Allow the suction and discharge)
5 - Silent (attenuate the hiss of the gas during the discharge phase)
6 - Cover silent (Provides seal between the muffler and outlet hose)
7 - Pressure hose (Seals of refoulement to the refrigerant circuit)
8 - Counterweight (equilibrium rotational force of the crankshaft)
9 - Piston (Assure gas compression)
10 - Rod (Provides an intermediary between piston and crankshaft)
11 - Crankshaft (Used skewed transmission between rotor and piston)
12 - Rotor (Creates the rotational energy)
13 - Stator (Creates the magnetic field)
14 - spring suspension (balance and stabilize the engine in the bell)
15 - Connection motor (Provides input current in the motor)
16 - Starting system (here CTP)
17 - Oil Pump (lubricates the mechanical mounting)

Compressor start:
We can distinguish two variants starting aid:


Start relay:
Here is shown in series with the main winding (or "walk") ready to order a relay contact for the supply of the auxiliary winding (or so-called "boot"). When switched on, the electric current required by the main winding is very important. From this fact, the relay (energized) can order contact, feeding the auxiliary winding (start). The engine can then run the current decline in the main winding and therefore the relay (de-energized). Contact will open (off power to the auxiliary winding) and the engine will continue to run on its launched through the main winding. This system is no longer used in modern appliances.

Start by CTP:

This kind of startup is now current on all compressors powering next-generation devices. The CTP is a body whose electrical resistance (ability to curb the current) increases when the temperature increases. A power primary windings (walking) and auxiliary (start) are supplied. The motor can jump. As for the start relay, once started, the auxiliary winding must be cut. This is the CTP will do it. With the current passing through it, it produces heat and, consequently, an increase in its resistance to the complete blockage of the flow of current. The engine is started and fueled the running winding.

Note:



These two starting systems are not interchangeable because they require a clean manufacturing of the compressor motor. On engines start relay, the auxiliary winding is equal to approximately twice the value of the main winding. On starting motors PTC, the values ​​of the two coils are substantially identical.

Thermal safety:

On the schematic above, we can see in series with the motor windings, thermal overload protection. It aims to protect the motor against overheating in case of malfunction. It consists of a bimetallic (alloy of two metals bonded in the form of a disc) which has the particularity to deform under the action of heat. Thus, when the engine overheats, the system cuts power. Similarly, if the engine power at startup, the electric current increases, the bimetallic strip heats up, deform, cut and de facto power.

What symptoms and diagnosis in case of failure?

Not cold in the refrigerator:

Winding-cut: Measure with an ohmmeter

Valve-HS: test compression and suction motor (proper equipment needed)
-Mechanical Problem.
Compressor "click" Thermal safety locks (overheating, boot problem, blocking mechanical problem in the cooling circuit)

Installing air conditioning

Theair conditioning installation is not in itself a very complicated, but it must first acquire the equipment and to do, have correctly identified the needs they must meet.

Before installing air conditioning, several criteria are taken into account

-The volume to be equipped. Theair conditioning installation Does it concern a part or the entire housing ?
-The use of air conditioners or she will be more intensive or occasional ?
-What is the orientation of the parts to cool or heat ? What is their isolation ?
-What price do not exceed air conditioning did you set ?

This assessment will help you acquire this type of air conditioner rather than another.

To map, there are usually 2 types of air conditioners : mobile air conditioners and fixed air conditioners.

Of these air conditioners, some are one-piece and other splits (literally, separated).

The Monobloc air conditioner is composed of one piece, It extracts heat from the room where it is placed and vented outside through a drain pipe. It does the air as a room of modest size. It is for moderate use and the price of the unit is around 300 euros.

The split air conditioner, about 3 times more than the previous, includes an outdoor unit connected by piping to one or more interior components. The compressor is located in the outdoor unit and the evaporator in the country or from within. Advantages over single-piece, little or no noise and refreshed several pieces together if desired. The split air conditioner can also be reversible is to say that in winter, It will act as the heating system

Theair conditioning installation depends on the type of air conditioner must be retained, but generally, avoid installing air conditioning elements to sunny areas or near a source of artificial heat.

Installing portable air conditioner is a cinch. Packaged or split sometimes, they are mounted on wheels which gives them the great advantage that it can easily move from one room to another. The split is connected to the mobile unit outside on a flat duct via a window if necessary.

If the multi-split air conditioning installation is only for professionals, Fixed air conditioning installation can be performed quickly by a good handyman.

The indoor unit must always be positioned above the outdoor unit.

The steps for installing air conditioning

-Secure the bracket of the indoor unit on the wall
-Drill the hole through which pass the connection from the cold.
-Place the unit on its support and introduce into the hole, the power cable and hose.
-Attach the vent pipe vertically on the outside wall and the compressor on the ground (some also do not bind).
-Connect the power cable and connect the hose.
-If the air conditioning works, fill what's left of the hole with spackle.

Now it cool ? Sure still not fall below the 20 ° C. The transition from a high outside temperature to a temperature too cold causes headaches and colds !!

Reversible air conditioner

In contrast du Reversible air conditioner, The functions of a conventional air conditioning and refrigerator are identical. They take all 2 heat from the ambient air to expel outside. Ambient air is captured either in the room to be conditioned or inside the refrigerator and the exhaust air is out of the room or behind the refrigerator.

It is through the intermediary of a refrigerant to the thermal properties such as specific heat exchanges are allowed.

In the case of a Reversible air conditioner, the circuit is reversed : heat from the outside is taken to be returned to the interior of the room.

The principle of operation of a reversible air conditioner is the same as that of a heat pump. The reversible heat pump air-water or water-water and Reversible air conditioner are 2 reversible systems that produce hot and cold.

Benefits of a reversible air conditioner

This is an economical heating system.

The refrigeration cycle of the air conditioner is simplified, it works with a favorable energy balance : for 1 KW absorbed by the compressor, the air conditioner product 2 KW cold but returns 3 KW heat.

The heat from outside air drawn in winter is multiplied by being released into the workpiece.

However, The COP, ie the coefficient of performance that allows for 1KW absorbed to recover 3, is a function of outside temperature course.

By focusing 2 features hot and cold (instead of in the case of a conventional air conditioning), the gain is evident not only from a financial point of view but also in terms of space occupied.

Disadvantages of a reversible air conditioner

1)The limits of power for the heating function.

No problem if the needs are modest. And revenge, more than the outside temperature is low, the higher the yield will decrease. That's why when large drops in temperature or in areas often exposed to cold, it is advisable to use an auxiliary heater and air conditioner properly handle its reversible. This does not pose a problem. The electronic heat is possible in the 10th grade on an air conditioning.

2)Noise

Even if they are more acceptable than those caused by a mobile air, the noise heard is that of a refrigerator. However, manufacturers are gradually improving their products to make them quieter.

The installation of the outdoor unit on a wall is not aesthetically, always the best effect.

The cost of an air conditioning system is reversible 10 to 20% higher than that of a cold air only.

The heat blast can cause discomfort and gene.

In brief, reversible if the air conditioner split is very suitable for use on a professional rather, he is more reserved for the off season in domestic households for performance reasons but also feelings of discomfort due to air movement.

Inverter air conditioner

Unlike the inverter air conditioner, operation of a conventional air conditioning reflect the principle of "all or nothing".

As a refrigerator, air conditioning compressor running at full speed for a desired temperature. It reached, the air conditioning compressor continues to "turn" to restart later, when the temperature rises continuously and this.

This alternation of cycles on / off does not have a constant temperature and causes further, premature wear of the compressor, discomfort and energy consumption. Furthermore, at each stop of the compressor, humidity of the room rises sharply.

Designed in Japan, inverter technology air conditioning compressor and the VEV (Variable Speed), can overcome the disadvantages of the AC "all or nothing".

The control system, The DC Inverter Japanese Mitsubishi Electric has pioneered the design of air conditioning.

Inverter compressor VEV (Variable Speed) overcomes the slightest change in temperature by regulating the speed immediately when the internal temperature varies. Otherwise, if the temperature outside is high, it provides more power and conversely, moderate if it's warm outside.

A inverter air conditioner in fact similar to a variable speed air conditioner.

The advantages of inverter air conditioner

-A constant temperature
Printing drafts felt disappears and comfort is not commensurate with the conventional air conditioning.

-Increased longevity of compressors

-Savings on electricity bill can go beyond the 40% compared to traditional air conditioning.
Indeed, the inverter air conditioner start, reduces the current draw. Otherwise, Inverter system optimizes the setting constant temperature and accelerate at the start and holding it very precisely

-If the endless cycle of on / off (to 8 fois/heure !) of conventional air conditioning power consumption and generates significant discomfort, it can also cause damage to appliances by brownouts caused. The inverter air conditioner does not start him in that 1 2 fois/heure.times / hour

Inverter technology also applies to Reversible air conditioner (which produces cold in summer and warm in the cold) et en hiver, compared with electric heating, we see savings of up to 78% !

Caution still : the AC inverter uses a large number of electronic components. It is therefore very sensitive to variations of intensity and tension. It is therefore necessary to verify the electrical.

Inverter technology and its advantages are now well understood by all manufacturers of air-conditioning and even if its price is 10 to 20% higher than conventional equipment, Japan, 80% housing stock is equipped with air conditioning inverter and France, inverter air conditioner is recommended every season more.

car air conditioning

The air conditioning system operation of a car is identical to that of a domestic air conditioning system.

The elements of a car air conditioning

A closed circuit containing a refrigerant R 134 A. This fluid has all the qualities essential for automotive air conditioning systems: non-flammable and chemically stable, it also blends easily with lubricants ...

4 basic elements of a car air conditioning:

-Air conditioning compressor. And disengageable belt driven, it allows the circulation of fluid in the circuit part and the general operation by compressing when in gaseous phase.

-The capacitor. It is placed in front of the cooling radiator and accelerates the transfer of heat by cooling the refrigerant.

-Regulator reduces the meanwhile, the fluid pressure and regulates its flow rate in the evaporator to ensure complete conversion of the liquid gas.

-The evaporator, is a heat exchanger that will transform the liquid into gas. It removes moisture and heat to the air so cold that happen in the cockpit of the car.

4 complementary elements of a car air conditioning:

It dehydrator it absorbs residual moisture of the circuit to protect it from corrosion, the brutal pressure changes and makes a pool of fluid in the liquid phase.

The thermostat-authorize or not the operation of the compressor depending on the temperature of the evaporator.

-Continuously monitors the pressure switch high and low pressures in the liquid phase of the circuit, for controlling the fan and the electromagnetic clutch of the compressor.

-The electromagnetic clutch. Driven by the pressure switch, thermostat, and the fuel injection systems, it prevents the air conditioning compressor to run continuously.

Maintenance of a car air conditioning

Nowadays, the automotive air conditioning is common. If the car air conditioner is more robust than in the past, it does not require a less correct and regular maintenance for an air conditioning system is not maintained may soon be detrimental to the health of passengers.

-Changing the air conditioning compressor belt and each revision of the dehydrator filter every 2 years.

Control of the charge of refrigerant. If leakage occurs, an operation of discharge and charge is to be performed by a specialist.

-Replacing the cabin air filter at least every two years.

-Verification of condensations leading to the discharge line which is located under the left front fender of the car in general.

-Setting the air conditioner thermostat car.

Hunting mushrooms often proliferate in the evaporator using appropriate antifungal products.

Tips

For your car aircon works optimally, some small reflexes are to be acquired.

-Reduce opportunities of thermal shock if possible (do not let not the doors of the car wide open even though the air conditioning is running for example!).

-Operate the air conditioner regularly to allow lubrication of the joints air conditioning compressor.

-Use air conditioning throughout the year. In winter, the air conditioning allows a very rapid demisting.

Have a good trip ...

Make the insulating capacity of his house

Before setting up an air conditioning system in your home, it is necessary to achieve a heat balance to choose which air conditioning is best suited to your home and your needs.

Indeed, the establishment of an air conditioner increases your electricity consumption in a room of 15 to 25% depending on the use you make of it. In other words, if you install an air conditioner with power is not sufficient to cool the area concerned, your consumption will be even more important since the air conditioner will operate in overspeed for efficiency, ultimately, lower. If instead, you put up an air conditioner too strong, you made ​​a purchase therefore unnecessary.

For the establishment of a one-piece air conditioner, it is possible to estimate the self-power required to condition part, in particular taking account of the surface thereof, the ceiling height, the number and dimensions of windows, the materials they contain but also on soil type. Also to take into account to establish your diagnosis: exposure of the room (south, north), the geographical location of your home, number of occupants therein and the presence of electrical devices capable of releasing heat (computer, oven, etc..).

For other air conditioning, you must hire a professional to determine what heat balance for free. Indeed, this assessment is an integral part of the installation and allow you at the same time to test the skills of your installer.

The importance of a serious and rigorous heat balance is thus proven. Send us your details now so we can prepare a custom quote and a free heat balance that will make your life fresh, even in summer!

air conditioning and filter: pure and fresh air

The filter in your air conditioner is an essential element of the unit as a whole. Indeed, the filter cleans the air of dust, pollutants and allergens. In addition, the filter, and regular maintenance, play an important role in maintaining a working condition similar to that of the departure of the aircraft.
Thus, it is necessary and important to change the filter at least once in the month, after the air conditioner runs constantly. If the filter is not changed regularly, the air will not be purified and the device will deteriorate more quickly, costly repairs will be needed soon.
Currently, there are several types of filters:
fiberglass filters: these filters are mainly used in air conditioners. Single use, they must be changed every month.
fiberglass filters pleated filters: they are primarily used in residential or commercial complexes. The effectiveness of these filters is the density of the weave, but they do not adapt to all air conditioning systems.
electrostatic filters: they collect dust and microparticles through the static load of the air passing through them, they are ideal for people with allergies.
Electronic filters: they are connected to a power source and a pre-filter that collects the largest particles.
carbon filters: they are very effective against odor problems and are therefore recommended for individuals who own animals.
Together determine the type of filter that best suits you, leave us your details and we will establish specifications for units that will make your air fresh and clean!