KR20040106765A - Condenser Structure Of Outdoor Unit For Air Conditioner - Google Patents

Abstract

PURPOSE: A condenser structure for an outdoor unit of an air conditioner is provided to carry out condensing operation in partial condensing sections when all condensers are not in operation, thereby reducing noise. CONSTITUTION: A condenser structure for an outdoor unit of an air conditioner includes a plurality of divided condensing sections(15a,15b) connected to any one of multiple compressors(11,12) independently from each other. Each of the condensing sections is connected to a corresponding evaporator(31,32) respectively, wherein refrigerant discharge pipes(23a,23b) respectively extended from the condensing sections are connected to each other by a connection pipe(24). A second check valve is provided on a path of the connection pipe. A refrigerant pipe from a large capacity one among the multiple compressors to one of the condensing section having a small capacity is provided with a first check valve(61).

Description

Condenser Structure Of Outdoor Unit For Air Conditioner

The present invention relates to a condenser structure of an outdoor unit for an air conditioner. More specifically, when the premise of a multi-compressor is not operated, condensation is performed only in a part of a condenser section of the condenser. It relates to a condenser structure of an outdoor unit for an air conditioner to prevent the generation of noise.

As is known, the refrigeration system is largely composed of closed circuits such as a compressor, a condenser and an evaporator.

That is, in the refrigerating system, the refrigerant compressed in the compressor is condensed into the liquid phase through the condenser, and then evaporated in the evaporator. The evaporator generates cold air by using latent latent heat in the process of evaporating the refrigerant.

Home appliances to which such a refrigeration system is applied include an air conditioner including a refrigerator.

Among them, the air conditioner consists of an indoor unit disposed indoors and an outdoor unit disposed outdoors, and a single evaporator is usually provided in the indoor unit, and a single compressor and a condenser are provided in the outdoor unit, respectively.

However, in the case of partial load on the refrigeration system in order to increase energy consumption efficiency in recent years, a plurality of compressors (also referred to as "multi-compressors") are adopted in the outdoor unit to vary the compression capacity of the compressor, and the indoor unit is also Multi-air conditioners have been introduced that employ a plurality (also called "multi-evaporators").

The air conditioner has been developed as a way to reduce the burden on the outdoor unit by using only one outdoor unit while placing the indoor unit in the living room or a double.

In a refrigeration system of this type of air conditioner, in order to simultaneously operate all the multiple evaporators, when the multiple compressors simultaneously operate to compress the refrigerant, the refrigerant compressed in the multiple compressors is introduced into the condenser through the corresponding check valve.

Then, after condensing in the condenser, it moves along the refrigerant pipe, then splits through a predetermined branch pipe, and then evaporates in the multi-evaporator.

Thus, the space in which the multi-evaporator is installed can be cooled.

On the other hand, in contrast to the above if only one of the multi-evaporator is operated alone, the corresponding compressor also operates alone to compress the refrigerant.

The compressed refrigerant is also condensed toward the condenser, and then flows into the operating evaporator to generate cold air and then circulated to the compressor.

In such a conventional refrigeration system, even if all of the multiple compressors operate or only one compressor operates, the condenser condenses the refrigerant in the entire condensation section.

However, for example, when all the multiple compressors are operated, it is preferable to use all the condensation sections throughout the condenser. However, if only a single compressor is operated, the condenser does not need to use all the sections throughout the condenser.

By the way, the condenser employed in the conventional refrigerating system condenses the refrigerant in the condensation section of the entire condenser regardless of the number of compressor operation.

Therefore, when the condenser is operated, there is a disadvantage in that a noise such as a sound of water flowing by the refrigerant in a supercooled liquid state condensers are blurred.

The present invention has been made to solve the above problems, an object of the present invention, when the multi-compressor premise is not operating, the condensation is performed only in a part of the condenser section of the condenser by the operation of the supercooled state of the condenser It is to provide a condenser structure of an outdoor unit for an air conditioner to prevent the noise generated by the refrigerant.

1 is a configuration diagram for a refrigeration system according to an embodiment of a multi-air conditioner to which the present invention is applied;

Figure 2 is a simplified view of the refrigerant circuit of the multi-compressor and the condensation period shown in Figure 1 according to the present invention.

Explanation of symbols on the main parts of the drawings

11,12: first and second compressors 13,14: first and second check valves

15: condenser 15a, 15b: first and second condensation section

18: solenoid valve 19: solenoid valve

20: service valve 31,32: first and second evaporator

61: first check valve 62: second check valve

The present invention for achieving the above object, in the air conditioner having a multi-compressor for compressing a refrigerant, and a condenser for condensing the refrigerant from at least one of the multi-compressor, the condenser is a plurality of condensation along the plate direction The condenser structure of the outdoor unit for an air conditioner, which is divided into sections, wherein at least one of the multi-compressors and the plurality of condensation sections are independently connected to each other by a refrigerant pipe.

Here, when the multi-compressor is composed of first and second compressors having different capacities, the condensation section is formed of first and second condensation sections; The refrigerant pipe from the first compressor having a relatively large capacity is connected to both the first and second condensation sections, and the refrigerant tube from the second compressor having a relatively small capacity is connected to the second condensation section.

The refrigerant pipe directed from the first compressor to the second condensation section is provided with a first check valve for opening and closing the flow path of the refrigerant pipe.

First and second evaporators respectively attached to the first and second refrigerant discharge pipes extending from the first and second condensation sections to evaporate the refrigerant; A connection pipe provided between the first and second refrigerant discharge pipes and interconnecting the first and second refrigerant discharge pipes; It may further include a second check valve provided on the flow path of the connecting pipe.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a block diagram of a refrigeration system according to an embodiment of a multi-air conditioner to which the present invention is applied, and FIG. 2 is a view briefly showing a refrigerant circuit of the multi-compressor and the condensation period shown in FIG. to be.

As shown, the refrigeration system of the multi-air conditioner according to the present invention is largely divided into an outdoor unit region disposed outdoors and an indoor unit region disposed indoors.

In the indoor unit region, first and second compressors 11 and 12, first and second expansion valves 13 and 14, condenser 15, first and second pressure reducing tubes 21 and 22, and electromagnetic expansion valves. 18 and the solenoid valve 19 etc. are arrange | positioned, and the remaining 1st and 2nd evaporators 31 and 32 are provided in the indoor unit area | region, and cool the said indoor space.

The refrigeration system of the multi-air conditioner to which the present invention is applied includes first and second compressors 11 and 12 for compressing a refrigerant, and first and second compressors provided in corresponding refrigerant pipes of the first and second compressors 11 and 12, respectively. Second expansion valves 13 and 14, a condenser 15 for condensing the compressed refrigerant in the liquid phase, and first and second evaporators 31 and 32 for evaporating the condensed refrigerant.

As such, when the two first and second compressors 11 and 12 are employed, the same capacity of the first and second compressors 11 and 12 may be used. However, in the present invention, the first compressor 11 may be used. In comparison, the compression capacity of the second compressor 12 is used.

In addition, the two first and second evaporators 31 and 32 also employ less evaporation capacity of the second evaporator 32 than the first evaporator 31.

Between the condenser 15 and the first and second evaporators 31, 32, the first and second evaporators 31 and 32 branch off a single refrigerant pipe extending from the condenser 15, respectively. Second branch pipes 16 and 17 are provided.

The first branch pipe (16) is provided with an electromagnetic expansion valve (18) for adjusting the flow rate in the refrigeration system in accordance with the operating state of the first and second compressors (11, 12), the second branch pipe (17) ) Is equipped with a solenoid valve 19 for selectively opening and closing the flow path of the second branch pipe 17.

In addition, between the electromagnetic expansion valve 18 and the condenser 15, the first and second pressure reducing tubes for selectively supplying the refrigerant from the refrigerant pipe to any one of the first and second branch pipes (16, 17) ( 21,22).

A plurality of service valves (not shown) are provided between the condenser 15 and the first and second compressors 11 and 12 with the first and second evaporators 31 and 32 interposed therebetween.

These service valves interconnect the indoor unit and outdoor unit areas so that the first and second compressors 11 and 12, the condenser 15, the first and second pressure reducing tubes 21 and 22, and the electromagnetic expansion valve 18 ), It is possible to form a refrigeration cycle circulating to the first and second evaporators (31,32).

Meanwhile, FIG. 2 is a diagram briefly illustrating a refrigerant compressor in the condensation period and the multi compressor shown in FIG. 1.

Referring to this figure, the condenser 15 is divided into first and second condensation sections 15a and 15b along the plate surface direction.

The refrigerant pipes 25a and 25b extending from the first compressor 11 are branched at one point and connected to the first and second condensation sections 15a and 15b, respectively, and the second compressor 12 The refrigerant pipe 25c extending from the second pipe is connected to the second condensation section 15b.

In addition, a first check valve 61 for opening and closing the flow path of the refrigerant pipe 25b is provided in the refrigerant pipe 25b directed from the first compressor 11 to the second condensation section 15b.

Accordingly, when the first check valve 61 opens the flow path of the refrigerant pipe 25b, the refrigerant compressed from the first compressor 11 may be divided into the first and second condensation sections 15a and 15b. After heading, the liquid is condensed in the liquid phase within the first and second condensation sections 15a and 15b.

However, when only the second compressor 12 having a smaller capacity compared to the first compressor 11 is operated alone, the refrigerant compressed in the second compressor 12 is transferred only to the second condensation section 15b. The condensation is carried out only in the second condensation section 15b.

Therefore, when the second compressor 12 having a relatively small capacity is operated, it is possible to prevent the refrigerant from being condensed in the condensation section of the entire condenser 15, so that the refrigerant in the supercooled state is the condenser 15. ), It is possible to appropriately solve the disadvantage that the noise such as the sound of running water is blurred.

On the other hand, the first and second condensation section (15a, 15b) extending toward the first and second evaporator, the first and second refrigerant discharge pipe (23a) for sending the condensed liquid refrigerant to the first and second evaporator (23a) 23b) is formed.

In addition, a connection pipe 24 is provided between the first and second refrigerant discharge pipes 23a and 23b to interconnect the first and second refrigerant discharge pipes 23a and 23b, and the connection pipe 24 is provided. The second check valve 62 is provided on the flow path of ().

The second check valve 62 is properly opened and closed to adjust the amount of refrigerant from the condenser 15 to the first and second evaporators.

Referring to the process of the refrigerant circulating in the refrigeration system of the present invention having such a configuration as follows.

First, assuming that both of the first and second evaporators 31 and 32 operate simultaneously, when the first and second compressors 11 and 12 simultaneously operate to compress the refrigerant, the first and second compressors ( The refrigerant compressed in 11 and 12 is introduced into the condenser 15 through the corresponding check valve.

At this time, the first check valve 61 is opened and the refrigerant compressed by the first compressor 11 is directed to both the first and second condensation sections 15a and 15b through the refrigerant pipes 25a and 25b. The liquid is condensed in the liquid phase in the first and second condensation sections 15a and 15b.

The refrigerant from the second compressor 12 is condensed toward the second condensation section 15b through the refrigerant pipe 25c.

The refrigerant condensed in the entire region of the condenser 15 flows into the first and second branch pipes 16 and 17.

The refrigerant introduced into the first and second branch pipes 16 and 17 by the operation of the solenoid valve 19 passes through the first and second pressure reducing tubes 21 and 22 and the electromagnetic expansion valve 18. After the flow rate of the gas is adjusted, it flows along the corresponding refrigerant pipe to the first and second evaporators 31 and 32.

Then, by evaporating in the first and second evaporators 31 and 32, respectively, the indoor air of the corresponding area in which the first and second evaporators 31 and 32 are installed is cooled.

On the other hand, unlike the above, if it is assumed that only the second evaporator 32 having a relatively small capacity operates alone, when the second compressor 12 operates alone, the first check valve 61 is closed and the second compressor operates. The refrigerant compressed at 12 is directed only to the second condensation section 15b through the refrigerant pipe 25c.

That is, the condensation is not performed in the first condensation section 15a, but only in the second condensation section 15b.

Therefore, it is possible to solve the disadvantage that the coolant in the subcooled liquid state, such as the sound of water flowing through the condenser 15 is generated.

By operating the solenoid valve 19 to open the flow path of the second branch pipe 17, the refrigerant condensed in the condenser 15 does not face the first branch pipe 16 side, and the first and second pressure reducing tubes ( 21, 22) to the second branch 17 only.

Then, the second evaporator 32 is evaporated to cool the region in which the second evaporator 32 is installed.

As described above, when the second compressor 12 having a relatively small capacity is operated, it is possible to prevent the refrigerant from being condensed in the condensation section of the entire condenser 15. Is to be able to properly eliminate the disadvantage that the noise, such as the sound of flowing water by blurring the condenser 15.

In the above embodiment, a refrigeration system of a multi-air conditioner using two compressors 11 and 12 and two evaporators 31 and 32 is constructed. The idea of the invention may be sufficiently applied.

As described above, according to the present invention, the condenser structure is configured in parallel, so that when the premise of the multi-compressor is not operated, condensation is performed only in a part of the condenser, so that the refrigerant in the supercooled state during operation of the condenser is operated. This has the effect of preventing the generation of noise.

Claims (4)

An air conditioner having a multi compressor for compressing a refrigerant and a condenser for condensing the refrigerant from at least one of the multi compressors, The condenser is divided into a plurality of condensation sections along the plate surface direction, wherein at least one of the multi-compressor and the plurality of condensation sections are independently connected to each other by a refrigerant pipe. . The method of claim 1, When the multi compressor comprises first and second compressors having different capacities, the condensation section is formed of first and second condensation sections; The refrigerant pipe from the first compressor having a relatively large capacity is connected to both the first and second condensation sections, and the refrigerant tube from the second compressor having a relatively small capacity is connected to the second condensation section. The condenser structure of the outdoor unit for the air conditioner to say. The method of claim 2, A condenser structure of an outdoor unit for an air conditioner, characterized in that a coolant pipe directed from the first compressor to the second condensation section is provided with a first check valve for opening and closing a flow path of the coolant pipe. The method of claim 2, First and second evaporators respectively attached to the first and second refrigerant discharge pipes extending from the first and second condensation sections to evaporate the refrigerant; A connection pipe provided between the first and second refrigerant discharge pipes and interconnecting the first and second refrigerant discharge pipes; A condenser structure of an outdoor unit for an air conditioner, further comprising a second check valve provided on a flow path of the connection pipe.