KR20140059007A - A combined refrigerating and air conditioning system - Google Patents

Abstract

The present invention relates to a combined refrigerating and air conditioning system. According to an embodiment of the present invention, the combined refrigerating and air conditioning system comprises an air conditioning part including a first compressor and an air conditioning side indoor heat exchanger; a cooling part including a second compressor and a cooling heat exchanger; an outdoor unit which is arranged in the outside and which includes a case with an internal space and an outdoor heat exchanger arranged in the internal space; a first heat exchange part including a blowing fan for blowing external air to the outdoor heat exchanger through which refrigerant circulating the air conditioning part passes through, arranged on one side of the outdoor unit; and a second heat exchange part which is arranged on one side of the first heat exchange part and through which refrigerant circulating the cooling part passes through.

Description

[0001] The present invention relates to a combined refrigeration and air conditioning system,

The present invention relates to an air conditioning refrigeration combined system.

The air conditioning system is to heat and cool an indoor space by exchanging heat between a refrigerant flowing in a heat exchange cycle and indoor air and outdoor air. The cooling system means that the refrigerant is cooled (frozen or chilled) in the predetermined space by heat exchange between the refrigerant flowing in the heat exchange cycle and the outdoor air, and heat exchange between the refrigerant and the predetermined space.

Specifically, the air conditioning system includes a compressor for compressing the refrigerant, and an indoor heat exchanger and an outdoor heat exchanger for exchanging heat between the refrigerant and the indoor / outdoor air. The cooling system includes a compressor for compressing the refrigerant, an outdoor heat exchanger for condensing the refrigerant, and a refrigerant heat exchanger for evaporating the refrigerant. Thus, the air conditioning system and the cooling system are driven by a similar refrigerant system.

However, in the related art, such an air conditioning system and a cooling system are driven separately, which has a problem in that a manufacturing cost for constructing a system is increased.

Particularly, an outdoor heat exchanger used in an air conditioning system and an outdoor heat exchanger used in a cooling system are provided in separate cases, and a blowing fan is separately provided on one side of the case, thereby increasing the installation area of the outdoor heat exchanger .

In addition, there is a problem in that the manufacturing and installation cost of the system for providing the outdoor heat exchanger and the blower fan to the air conditioning and cooling system is increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air conditioning refrigeration combined system in which an outdoor heat exchanger of an air conditioning and refrigeration system is integrally formed.

An air conditioning refrigeration combined system according to an embodiment of the present invention includes: an air conditioning unit including a first compressor and an air conditioning side indoor heat exchanger; A cooling unit including a second compressor and a cooling heat exchanger; An outdoor unit disposed on an outdoor side and including a case defining an inner space and an outdoor heat exchanger disposed in the inner space; And a blower fan disposed at one side of the outdoor unit and blowing outdoor air to the outdoor heat exchanger, wherein the outdoor heat exchanger includes: a first heat exchanger unit through which the refrigerant circulating in the air conditioning unit passes; And a second heat exchanger disposed at one side of the first heat exchanger and through which the refrigerant circulating in the cooler passes.

According to the present invention, since the air conditioning side outdoor heat exchanger and the refrigerating side outdoor heat exchanger are provided in one case and the heat exchange of the outdoor heat exchangers is performed by one blowing fan, the installation area of the outdoor heat exchanger is reduced, The cost is reduced.

In addition, the refrigerating-side outdoor heat exchanger is arranged along the outside of the air-conditioning-side outdoor heat exchanger, so that heat exchange with air is performed first. Thus, the air heated by the refrigerating-side outdoor heat exchanger passes through the air- The evaporation heat amount of the heating can be increased.

As a result, the performance coefficient of the air conditioning side refrigeration cycle is improved and the power consumption can be reduced.

1 is a cycle diagram showing an air conditioning and refrigeration combined system according to a first embodiment of the present invention.
2 is a view showing a configuration of an outdoor unit according to a first embodiment of the present invention.
3 is a view showing a configuration of a heat exchanger according to a first embodiment of the present invention.
4 is a cross-sectional view taken along line I-I 'of FIG.
FIG. 5 is a view showing a configuration of a heat exchanger according to a second embodiment of the present invention. FIG.
6 is a cross-sectional view taken along line II-II 'of FIG.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. It is to be understood, however, that the spirit of the invention is not limited to the embodiments shown and that those skilled in the art, upon reading and understanding the spirit of the invention, may easily suggest other embodiments within the scope of the same concept.

1 is a cycle diagram showing a refrigerated hybrid air conditioning system according to a first embodiment of the present invention.

Referring to FIG. 1, an air conditioning and refrigeration combined system (hereinafter, referred to as an air conditioning system) 10 according to a first embodiment of the present invention includes an air conditioning unit 100 and a cooling unit 200. The air conditioning unit 100 is a system operated to cool or heat the indoor space, and the cooling unit 200 can be understood as a system operated to refrigerate or freeze the articles in the showcase.

The air conditioning unit 100 includes a first compressor 110 and a flow switching unit 115 for guiding the refrigerant discharged from the first compressor 110 to the air conditioning side indoor heat exchanger 120 or the outdoor heat exchanger 300 ). The flow switching unit 115 may include a four-way valve.

For example, in the cooling operation of the air conditioning unit 100, the refrigerant discharged from the compressor 110 flows to the outdoor heat exchanger 300 through the flow switching unit 115. On the other hand, in the heating operation of the air conditioning unit 100, the refrigerant discharged from the compressor 110 flows to the air conditioning side indoor heat exchanger 120 through the flow switching unit 115.

The air conditioning unit 100 includes an outdoor fan 350 as a blowing fan for forcing the flow of air from one side of the outdoor heat exchanger 300. The outdoor heat exchanger (300) includes a first heat exchanger (310) through which the refrigerant circulated in the air conditioning unit (100) passes.

On the inlet side of the air conditioning side indoor heat exchanger 120, a first expansion portion 131 for reducing the pressure of the refrigerant is provided. When the air conditioning unit 100 performs cooling operation, the refrigerant decompressed in the first expansion unit 131 may be evaporated in the air conditioning side indoor heat exchanger 120.

At the inlet side of the outdoor heat exchanger (300), a second expansion part (132) for reducing the pressure of the refrigerant is provided. The refrigerant decompressed in the second expansion unit (132) can be evaporated in the outdoor heat exchanger (300) when the air conditioning unit (100) performs heating operation.

The cooling unit 200 includes a second compressor 210 and a third compressor 212. The second compressor 210 may be a main compressor for compressing the refrigerant of the cooling unit 200 and the third compressor 212 may be operated when the operation of the second compressor 210 is restricted, And may be a backup compressor that can be operated when the second compressor 210 fails.

The cooling unit 200 includes an outdoor heat exchanger 300 having a second heat exchange unit 320 through which the refrigerant compressed by the second compressor 210 or the third compressor 212 flows. The compressed refrigerant can be condensed while passing through the second heat exchanger 320.

A refrigerant heat exchanger 400 is provided at an outlet side of the outdoor heat exchanger 300 so that the refrigerant of the cooling unit 200 can be heat-exchanged with the refrigerant of the air conditioning unit 100. The refrigerant heat exchanger 400 includes a first flow path 410 through which the refrigerant of the air conditioning unit 100 flows and a second flow path 420 through which the refrigerant of the cooling unit 200 flows. For example, refrigerant heat exchange may be performed by contacting the first flow path 410 and the second flow path 420.

The outlet 240 of the refrigerant heat exchanger 400 includes a receiver 240 for temporarily storing the refrigerant of the cooling unit 200. The amount of refrigerant circulated in the cooling unit 200 can be adjusted by adjusting the amount of refrigerant stored in the receiver 240.

At the outlet side of the receiver 240, a cooling heat exchanger 220 for evaporating the refrigerant of the cooling unit 200 is provided. The cooling heat exchanger 220 may be referred to as an indoor heat exchanger of the cooling unit 200. For convenience of explanation, the air conditioning side indoor heat exchanger 120 may be referred to as a "first indoor heat exchanger," and the cooling heat exchanger 220 may be referred to as a "second indoor heat exchanger."

The refrigerant evaporated in the cooling heat exchanger 220 may be introduced into the second compressor 210 or the third compressor 212. The cool air exchanged with the coolant in the cooling heat exchanger 220 may be supplied into a case (show case) for refrigerating or freezing the product.

Meanwhile, the refrigerant flow path may be determined according to the operation mode of the air conditioning unit 100 and the cooling unit 200.

For example, when the cooling unit 200 is operated without operating the air conditioning unit 100, the first heat exchange unit 310 of the air conditioning side indoor heat exchanger 120 or the outdoor heat exchanger 300 The refrigerant may not flow.

For example, when the air conditioning unit 100 operates in the cooling mode, the refrigerant condensed in the first heat exchanging unit 310 flows into the refrigerant heat exchanger 400 without flowing into the air conditioning side indoor heat exchanger 120 Can be introduced.

At the inlet side of the refrigerant heat exchanger (400), a third expansion part (133) for expanding the refrigerant of the air conditioning part (100) is provided. The refrigerant depressurized by the third expansion unit 133 flows into the first flow path 410, is heat-exchanged with the refrigerant of the cooling unit 200, and may be introduced into the first compressor 110.

A fourth expansion portion 231 for reducing the pressure of the refrigerant condensed in the outdoor heat exchanger 300 is provided at the outlet side of the second heat exchanging portion 320. The refrigerant expanded in the fourth expansion part 231 flows into the refrigerant heat exchanger 400 and can be supercooled through the second flow path 420.

A fifth expansion portion 235 is provided at the inlet side of the cooling heat exchanger 220. The refrigerant supercooled in the refrigerant heat exchanger (400) may be decompressed in the fifth expansion part (235) and then evaporated in the cooling heat exchanger (220).

The refrigerant circulating in the cooling unit 200 may be introduced into the refrigerant heat exchanger 400 by bypassing the outdoor heat exchanger 300. The refrigerant can be introduced into the refrigerant heat exchanger 400 by bypassing the outdoor heat exchanger 300 when the cooling load required by the cooling unit 200 is not large.

To this end, the cooling unit 200 is provided with a bypass flow path 230 extending from the inlet side of the outdoor heat exchanger 300 to the outlet side of the outdoor heat exchanger 300. The bypass passage 230 is provided with a flow regulating portion 233 for regulating the flow of the refrigerant. The flow regulator 233 may be a valve.

The refrigerant compressed by the second compressor 210 or the third compressor 212 may be introduced into the refrigerant heat exchanger 400 through the flow control unit 233. [ The refrigerant is condensed in the refrigerant heat exchanger (400), decompressed in the fifth expansion part (235), and then evaporated in the cooling heat exchanger (220).

The outdoor heat exchanger 300 includes a first heat exchange unit 310 through which refrigerant circulates in the air conditioning unit 100 and a second heat exchange unit 320 through which the refrigerant in the cooling unit 200 circulates, . The first heat exchanging part 310 and the second heat exchanging part 320 are integrally formed. Hereinafter, the configuration of the outdoor heat exchanger will be described with reference to the drawings.

FIG. 2 is a view showing a configuration of an outdoor heat exchanger assembly according to a first embodiment of the present invention, FIG. 3 is a view showing a configuration of a heat exchanger according to a first embodiment of the present invention, FIG. 4 is a cross- Sectional view taken along the line " -I ".

Referring to FIG. 2, the composite system 10 according to the first embodiment of the present invention includes an outdoor unit 30 disposed outdoors.

The outdoor unit 30 includes a case 301 forming an inner space, a suction unit 305 formed on a side surface of the case 301, and a discharge unit 307 formed on the upper surface of the case 301 .

The case 301 has a substantially hexahedral shape, and the suction unit 305 may be formed on three sides of four sides of the case 301. The suction unit 305 is formed to extend in the longitudinal direction of the side surface.

The three side surfaces may correspond to the shape of the outdoor heat exchanger 300, that is, the shape having three bent surfaces. For example, the outdoor heat exchanger 300 may have a ⊂ shape.

An outdoor fan (350) is provided above the discharge portion (307). The outdoor fan 350 is rotated to force the flow of the air from the suction unit 305 toward the discharge unit 307. The air flows from the side of the case 301 through the suction part 305 and flows through the internal space of the case 301 and then flows through the discharge part 307 to the upper part of the case 301 .

The air may be heat-exchanged with the refrigerant of the first heat exchanging unit 310 and the second heat exchanging unit 320 disposed inside the case 301 in the course of flowing through the inner space of the case 301 .

The first heat exchanging part 310 and the second heat exchanging part 320 are arranged in parallel in the case 301. Hereinafter, the arrangement of the first heat exchanger 310 and the second heat exchanger 320 will be described.

3 and 4, the outdoor heat exchanger 300 according to the first embodiment of the present invention is connected to the refrigerant pipe 330 and the refrigerant pipe 330 through which the refrigerant flows, and the heat exchange area between the refrigerant and the air And a heat exchange fin 332 for expanding the heat exchange fin 332.

The outdoor heat exchanger 300 includes a first heat exchange unit 310 through which refrigerant circulates in the air conditioning unit 100 and a second heat exchange unit 320 through which the refrigerant in the cooling unit 200 circulates do. The first heat exchanging part 310 and the second heat exchanging part 320 are integrally coupled.

Of course, the first heat exchanging part 310 and the second heat exchanging part 320 are composed of the refrigerant pipe 330 and the heat exchanging pin 332, respectively.

In detail, the outdoor heat exchanging part 300 is divided in the lateral direction to constitute the first heat exchanging part 310 and the second heat exchanging part 320. That is, the first heat exchanging part 310 and the second heat exchanging part 320 are arranged in the transverse direction inside the suction part 305 so that the air sucked through the suction part 305 can pass through sequentially .

The first heat exchanging part 310 and the second heat exchanging part 320 are bent to have a ⊂ shape. The second heat exchanging part 320 is disposed so as to surround the outer side of the first heat exchanging part 310. In other words, the first heat exchanging part 310 is coupled to the inner surface of the second heat exchanging part 320.

Here, the "outer side " means a direction close to the suction portion 305, and" inner side " is a direction away from the suction portion 305. [ Accordingly, it can be understood that the first heat exchanging part 310 is disposed further away from the suction part 305 than the second heat exchanging part 320.

In other words, the second heat exchanging unit 320 is disposed between the suction unit 305 and the first heat exchanging unit 310, and the air introduced through the suction unit 305 passes through the second heat exchanging unit 320, and then pass through the first heat exchanging unit 310.

4, the air sucked through the suction unit 305 first passes through the second heat exchanger 320 disposed outside the first heat exchanger 310, 1 heat exchanging unit 310, respectively.

At this time, since the refrigerant passing through the second heat exchanging part 320 and being heated (+ Q) can be heat-exchanged with the refrigerant of the first heat exchanging part 310, the refrigerant of the first heat exchanging part 310 The heat exchange efficiency can be improved.

For example, when the air conditioning unit 100 performs the heating operation, the heat generated during the condensation of the refrigerant in the cooling unit 200 can be transferred to the air through the second heat exchange unit 320, The refrigerant of the first heat exchanger 310 can be evaporated.

That is, since the refrigerant of the first heat exchanging part 310 can be evaporated, the amount of heat of evaporation can be increased. As a result, the operation efficiency of the system is improved and the power consumption can be reduced.

As described above, the plurality of heat exchanging units 310 and 320, that is, the heat exchanging unit 310 of the air conditioning unit and the heat exchanging unit 320 of the cooling unit are disposed in one case 301, So that the structure of the outdoor unit 30 is simplified and the cost for manufacturing an outdoor unit is reduced.

The outdoor heat exchanger 300 includes a first inlet 341 communicating with the first heat exchanger 310 and guiding the suction or discharge of the refrigerant in the air conditioning unit 100 and a second inlet 342 branching the refrigerant, And a first distributor 343 for introducing the refrigerant into the refrigerant pipe of the heat exchange unit 310.

The outdoor heat exchanger 300 is provided with a suction portion 345 communicating with the second heat exchanging portion 320 to guide suction of the refrigerant of the cooling portion 200 and a suction portion 345 connecting the refrigerant to the second heat exchanging portion 320 And a second distributor 347 for introducing the refrigerant into the refrigerant pipe of the refrigerant pipe.

Hereinafter, a second embodiment of the present invention will be described. Since the present embodiment differs from the first embodiment only in the configuration of the outdoor heat exchanger, the differences will be mainly described, and the description of the first embodiment and the reference numerals will be used for the same portions.

FIG. 5 is a view showing a configuration of a heat exchanger according to a second embodiment of the present invention, and FIG. 6 is a cross-sectional view taken along line II-II 'of FIG.

Referring to FIG. 5, the outdoor heat exchanger 500 according to the second embodiment of the present invention includes a first heat exchanger 510 and a second heat exchanger 520 arranged in parallel with each other. The outdoor heat exchanging unit 300 is divided in the longitudinal direction to constitute the first heat exchanging unit 310 and the second heat exchanging unit 320.

The first heat exchanging part (510) is disposed above the second heat exchanging part (520). The first heat exchanging part 510 and the second heat exchanging part 520 are integrally formed so that the refrigerant pipe 530 is coupled to the heat exchanging pin 532.

One side of the first heat exchanging part 510 is provided with a first inlet and outlet part 541 through which refrigerant flows into the first heat exchanging part 510 or flows out from the first heat exchanging part 510. A suction portion 545 is provided at one side of the second heat exchanging portion 520 to allow the refrigerant to flow into the second heat exchanging portion 520 side.

Referring to FIG. 6, an outdoor fan 350 for enforcing the flow of outdoor air is provided above the first heat exchanger 510. By driving the outdoor fan 350, the air sucked through the suction portion of the case passes through the first heat exchanging portion 510 and the second heat exchanging portion 520 at the same time, and performs heat exchange with the refrigerant.

The first heat exchanging unit 510 is disposed closer to the outdoor fan 350 than the second heat exchanging unit 520.

The first heat exchanging part 510 is arranged close to the outdoor fan 350 so that the air flow generated around the first heat exchanging part 510 is larger than the air flow around the second heat exchanging part 520 . Therefore, the amount of heat exchange generated in the first heat exchanging part 510 can be relatively increased as compared with the second heat exchanging part 520.

When the load of the air conditioning unit 100 is larger than the load of the cooling unit 200, the first heat exchanging unit 510 is disposed closer to the outdoor fan 350 than the second heat exchanging unit 520 , It is possible to match the required load.

Other embodiments are suggested.

The second heat exchanging part 520 is disposed above the second heat exchanging part 520 and the first heat exchanging part 510 is disposed above the second heat exchanging part 520. However, As shown in FIG.

The second heat exchanging unit 520 is arranged close to the outdoor fan 350 so that the air flow generated around the second heat exchanging unit 520 is larger than the air flow around the first heat exchanging unit 510 . Therefore, the amount of heat exchange generated in the second heat exchanging unit 520 can be relatively larger than that of the first heat exchanging unit 510.

When the load of the cooling unit 200 is greater than the load of the air conditioning unit 100, the second heat exchanging unit 520 is disposed closer to the outdoor fan 350 than the first heat exchanging unit 510 , It is possible to match the required load.

The positions of the first heat exchanging unit 510 and the second heat exchanging unit 520 are determined based on the required loads of the air conditioning unit 100 and the cooling unit 200 in the composite system 10 .

That is, the first heat exchanging unit 510 and the second heat exchanging unit 520 may be arranged in the vertical direction so that the heat exchange amount of the outdoor heat exchanger 300 may be large in a system requiring a large load.

10: composite system 100: air conditioning unit
110: first compressor 120: air conditioning side indoor heat exchanger
200: cooling section 210: second compressor
212: third compressor 220: cooling heat exchanger
300: outdoor heat exchanger 301: case
305: Suction section 307: Discharge section
310: first heat exchanger 320: second heat exchanger
330: refrigerant piping 332: heat exchange pin
350: outdoor fan 400: refrigerant heat exchanger
410: first flow path 420: second flow path

Claims (11)

An air conditioning unit including a first compressor and an air conditioning side indoor heat exchanger;
A cooling unit including a second compressor and a cooling heat exchanger;
An outdoor unit disposed on an outdoor side and including a case defining an inner space and an outdoor heat exchanger disposed in the inner space; And
A blower fan disposed at one side of the outdoor unit and blowing outdoor air to the outdoor heat exchanger,
In the outdoor heat exchanger,
A first heat exchange unit through which the refrigerant circulating in the air conditioning unit passes; And
And a second heat exchange unit disposed at one side of the first heat exchange unit and through which the refrigerant circulating in the cooling unit passes. The method according to claim 1,
Wherein the first heat exchanging unit and the second heat exchanging unit are integrally coupled. The method according to claim 1,
A suction portion for introducing air toward the first heat exchanging portion and the second heat exchanging portion is formed on a side surface of the case,
And the blowing fan is disposed on the upper portion of the case. The method of claim 3,
Wherein the first heat exchanging unit and the second heat exchanging unit are arranged in a lateral direction or in a longitudinal direction. 5. The method of claim 4,
Wherein the first heat exchanging unit and the second heat exchanging unit are disposed in the transverse direction inside the suction unit. 5. The method of claim 4,
Wherein the first heat exchanging unit is disposed further away from the suction unit than the second heat exchanging unit. The method according to claim 6,
The second heat exchanger is disposed between the suction unit and the first heat exchanger,
And the air introduced through the suction unit passes through the second heat exchange unit and then passes through the first heat exchange unit. 5. The method of claim 4,
Wherein the first heat exchanging unit and the second heat exchanging unit are vertically arranged inside the suction unit. 9. The method of claim 8,
Wherein the suction portion extends in the longitudinal direction of the case,
And the air introduced through the suction portion flows into the first heat exchanger and the second heat exchanger, respectively. The method according to claim 1,
Wherein the first heat exchanger is an evaporator of the air conditioning unit, and the second heat exchanger is a condenser of the cooling unit. The method according to claim 1,
An outdoor heat exchanger provided on one side of the outdoor heat exchanger,
And a refrigerant heat exchanger in which heat exchange is performed between a refrigerant circulating through the cooling unit and a refrigerant circulating through the air conditioning unit.

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