CN112303950A - Heat exchange system and air conditioning equipment with same - Google Patents
Heat exchange system and air conditioning equipment with same Download PDFInfo
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- CN112303950A CN112303950A CN202011186388.0A CN202011186388A CN112303950A CN 112303950 A CN112303950 A CN 112303950A CN 202011186388 A CN202011186388 A CN 202011186388A CN 112303950 A CN112303950 A CN 112303950A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 97
- 239000003507 refrigerant Substances 0.000 claims abstract description 88
- 238000000034 method Methods 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 8
- 238000005057 refrigeration Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 3
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- General Engineering & Computer Science (AREA)
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- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention provides a heat exchange system and air conditioning equipment with the same, wherein the heat exchange system comprises: the indoor unit heat exchanger is arranged on the indoor side and used for exchanging heat with air on the indoor side; the outdoor machine heat exchanger is arranged on the outdoor side and used for exchanging heat with air on the outdoor side, and two ends of the indoor machine heat exchanger are respectively communicated with two ends of the outdoor machine heat exchanger to form a heat exchange circulation passage; the throttling device is arranged on a communicating pipeline between the internal heat exchanger and the external heat exchanger to control the flow of the refrigerant in the heat exchange circulating passage; and the liquid storage device is used for storing a refrigerant, is arranged on the heat exchange circulation passage and is positioned between the throttling device and the inner machine heat exchanger or between the throttling device and the outer machine heat exchanger. The heat exchange system solves the problem that the demand of the air conditioner internal heat exchanger and the demand of the air conditioner external heat exchanger on the refrigerant are different in the prior art.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a heat exchange system and an air conditioning device with the same.
Background
For a heat exchange system, the quantity of refrigerants required by different sizes of the internal machine and the external machine is different, and the quantity of the refrigerants affects the heat exchange performance of the heat exchange system; meanwhile, the pressure in the heat exchanger pipe needs to be limited within a certain range, and the safe operation of the system is ensured.
However, the heat exchange system in the prior art has the following problems:
(1) the heat exchange areas of the inner machine heat exchanger and the outer machine heat exchanger are different, and the demand of the inner machine heat exchanger and the outer machine heat exchanger to the refrigerant is different.
(2) The pressure of the heat exchanger is too high, which affects the reliability of the heat exchanger.
Disclosure of Invention
The invention mainly aims to provide a heat exchange system and air conditioning equipment with the same, and aims to solve the problem that the demand of an indoor unit heat exchanger and an outdoor unit heat exchanger of an air conditioner in the prior art for a refrigerant is different.
In order to achieve the above object, according to one aspect of the present invention, there is provided a heat exchange system comprising: the indoor unit heat exchanger is arranged on the indoor side and used for exchanging heat with air on the indoor side; the outdoor machine heat exchanger is arranged on the outdoor side and used for exchanging heat with air on the outdoor side, and two ends of the indoor machine heat exchanger are respectively communicated with two ends of the outdoor machine heat exchanger to form a heat exchange circulation passage; the throttling device is arranged on a communicating pipeline between the internal heat exchanger and the external heat exchanger to control the flow of the refrigerant in the heat exchange circulating passage; and the liquid storage device is used for storing a refrigerant, is arranged on the heat exchange circulation passage and is positioned between the throttling device and the inner machine heat exchanger or between the throttling device and the outer machine heat exchanger.
Further, when the heat exchange area of the inner machine heat exchanger is smaller than or equal to that of the outer machine heat exchanger, the liquid storage device is arranged between the throttling device and the inner machine heat exchanger; when the heat exchange area of the inner machine heat exchanger is larger than that of the outer machine heat exchanger, the liquid storage device is arranged between the throttling device and the outer machine heat exchanger.
Further, the liquid storage device is a liquid storage tank.
Further, the liquid storage device includes: the liquid storage shell is provided with a storage cavity for storing a refrigerant; the first connecting pipe and the second connecting pipe are inserted in the storage cavity; the first connecting pipe is used for being connected with the throttling device; when the second connecting pipe is connected with the inner machine heat exchanger, the throttling device is connected with the outer machine heat exchanger; when the second connecting pipe is connected with the outer machine heat exchanger, the throttling device is connected with the inner machine heat exchanger.
Further, the distance between the pipe orifice of the first connecting pipe located in the storage cavity and the bottom of the liquid storage shell is greater than the distance between the pipe orifice of the second connecting pipe located in the storage cavity and the bottom of the liquid storage shell.
Further, the height difference between the pipe orifice of the first connecting pipe located in the storage cavity and the pipe orifice of the second connecting pipe located in the storage cavity is Δ h, the heat exchange area of the inner machine heat exchanger is a1, and the heat exchange area of the outer machine heat exchanger is a2, wherein: Δ h ═ a-A2-A1 | + b, and a and b are each 0 or more.
Further, when the heat exchange area of the inner machine heat exchanger is smaller than or equal to that of the outer machine heat exchanger, the first connecting pipe is connected with the outer machine heat exchanger through the throttling device, and the second connecting pipe is connected with the inner machine heat exchanger; when the heat exchange area of the inner machine heat exchanger is larger than that of the outer machine heat exchanger, the first connecting pipe is connected with the inner machine heat exchanger through the throttling device, and the second connecting pipe is connected with the outer machine heat exchanger.
Further, the throttling device is an expansion valve, or a capillary tube, or a throttling short tube.
Further, the heat exchange system still includes: a compressor; the four-way valve is arranged on the heat exchange circulation passage and is positioned on one sides of the inner machine heat exchanger and the outer machine heat exchanger, which are far away from the liquid storage device; the four-way valve comprises a first valve port, a second valve port, a third valve port and a fourth valve port, wherein the first valve port is connected with the inner machine heat exchanger, the second valve port is connected with the outer machine heat exchanger, the inlet of the third valve port compressor is connected, and the fourth valve port is connected with the outlet of the compressor.
According to another aspect of the invention, an air conditioning device is provided, which comprises the heat exchange system.
By applying the technical scheme of the invention, two ends of an inner machine heat exchanger in the heat exchange system are respectively communicated with two ends of an outer machine heat exchanger to form a heat exchange circulation passage, a throttling device is arranged on a communicating pipe between the inner machine heat exchanger and the outer machine heat exchanger, a liquid storage device for storing a refrigerant is arranged on the heat exchange circulation passage, and the liquid storage device is positioned between the throttling device and the inner machine heat exchanger or between the throttling device and the outer machine heat exchanger. According to the invention, the liquid storage device is additionally arranged on the pipeline system positioned at the outdoor side, and the position of the liquid storage device is determined according to the heat exchange areas of the inner machine heat exchanger and the outer machine heat exchanger, so that on one hand, the refrigerant required by the heat exchange system is ensured, and the heat exchange efficiency of the inner machine heat exchanger and the outer machine heat exchanger is improved, on the other hand, the liquid storage device is used as a part for storing the refrigerant, a small part of the refrigerant can be stored, the amount of the refrigerant in the heat exchanger can be relatively reduced, the pressure in the heat exchanger can be reduced, and the high. By the method, different inner and outer machine combination and collocation can be realized, the universality of products is improved, the problem that the demand of the heat exchanger of the inner machine of the air conditioner and the demand of the heat exchanger of the outer machine of the air conditioner in the prior art are different to the refrigerant due to different heat exchange areas is solved, and the problem that the reliability of the heat exchanger is influenced due to overhigh pressure of the heat exchanger is also solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic structural view of a first embodiment of a heat exchange system according to the present invention; and
figure 2 shows a schematic structural view of a second embodiment of the heat exchange system according to the present invention.
Wherein the figures include the following reference numerals:
1. an internal machine heat exchanger; 2. an outdoor unit heat exchanger; 3. a throttling device; 4. a liquid storage device; 40. a liquid storage shell; 41. a first connecting pipe; 42. a second connecting pipe; 5. a compressor; 6. a four-way valve; 10. indoor side; 20. outside the chamber.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 and 2, the present invention provides a heat exchange system comprising: the indoor unit heat exchanger 1 is arranged on the indoor side 10, and is used for exchanging heat with the air on the indoor side 10; the outdoor unit heat exchanger 2 is arranged on the outdoor side 20 and used for exchanging heat with air on the outdoor side 20, and two ends of the indoor unit heat exchanger 1 are respectively communicated with two ends of the outdoor unit heat exchanger 2 to form a heat exchange circulation path; the throttling device 3 is arranged on a communicating pipeline between the inner machine heat exchanger 1 and the outer machine heat exchanger 2 to control the flow of the refrigerant in the heat exchange circulation passage; and the liquid storage device 4 is used for storing a refrigerant, the liquid storage device 4 is arranged on the heat exchange circulation passage, and the liquid storage device 4 is positioned between the throttling device 3 and the inner machine heat exchanger 1 or between the throttling device 3 and the outer machine heat exchanger 2.
In the heat exchange system, two ends of an inner machine heat exchanger 1 are respectively communicated with two ends of an outer machine heat exchanger 2 to form a heat exchange circulation passage, a throttling device 3 is arranged on a communicating pipe between the inner machine heat exchanger 1 and the outer machine heat exchanger 2, a liquid storage device 4 for storing a refrigerant is arranged on the heat exchange circulation passage, and the liquid storage device 4 is positioned between the throttling device 3 and the inner machine heat exchanger 1 or between the throttling device 3 and the outer machine heat exchanger 2. According to the invention, the liquid storage device 4 is additionally arranged on the pipeline system positioned at the outdoor side 20, the position of the liquid storage device 4 is determined according to the size of the heat exchange area of the indoor unit heat exchanger 1 and the outdoor unit heat exchanger 2, on one hand, the refrigerant required by the heat exchange system is ensured, and the heat exchange efficiency of the indoor unit heat exchanger 1 and the outdoor unit heat exchanger 2 is improved, on the other hand, the liquid storage device 4 is used as a part for storing the refrigerant, a small part of the refrigerant can be stored, the amount of the refrigerant in the heat exchanger can be relatively reduced, the pressure in the heat exchanger can be reduced, and the high. By the method, different inner and outer machine combination and collocation can be realized, the universality of products is improved, the problem that the demand of the heat exchanger of the inner machine of the air conditioner and the demand of the heat exchanger of the outer machine of the air conditioner in the prior art are different to the refrigerant due to different heat exchange areas is solved, and the problem that the reliability of the heat exchanger is influenced due to overhigh pressure of the heat exchanger is also solved.
The heat exchange area of the inner machine heat exchanger 1 refers to the contact area between the outer surface of the inner machine heat exchanger 1 and the air on the indoor side 10, and the heat exchange area of the outer machine heat exchanger 2 refers to the contact area between the outer surface of the outer machine heat exchanger 2 and the air on the outdoor side 20.
Specifically, when the heat exchange area of the inner machine heat exchanger 1 is smaller than or equal to the heat exchange area of the outer machine heat exchanger 2, the liquid storage device 4 is arranged between the throttling device 3 and the inner machine heat exchanger 1; when the heat exchange area of the inner machine heat exchanger 1 is larger than that of the outer machine heat exchanger 2, the liquid storage device 4 is arranged between the throttling device 3 and the outer machine heat exchanger 2.
When the indoor unit configuration is smaller than or equal to the outdoor unit configuration (namely, the heat exchange area of the indoor unit heat exchanger 1 is smaller than or equal to that of the outdoor unit heat exchanger 2), the heat exchange area of the outdoor unit heat exchanger 2 is large, the required refrigerant quantity is large to improve the working efficiency of the outdoor unit heat exchanger 2, the liquid storage device 4 is additionally arranged between the indoor unit heat exchanger 1 and the throttling device 3, and the liquid storage device 4 plays a role in storing part of the refrigerant coming out of the outdoor unit heat exchanger 2. In the heating process, the refrigerant in the indoor unit heat exchanger 1 evaporates to release heat, and the liquid storage device 4 can store a small part of refrigerant, so that the pressure on the inner side of the pipe of the indoor unit heat exchanger 1 is reduced.
When the indoor unit configuration is larger than the outdoor unit configuration (namely, the heat exchange area of the indoor unit heat exchanger 1 is larger than that of the outdoor unit heat exchanger 2), the required refrigerant quantity is more for improving the efficiency of the indoor unit heat exchanger 1 due to the larger heat exchange area of the indoor unit heat exchanger 1, the liquid storage device 4 is additionally arranged between the outdoor unit heat exchanger 2 and the throttling device 3, and a part of refrigerant can be stored so as to meet the requirement of the large refrigerant quantity of the indoor unit heat exchanger 1. Meanwhile, in the refrigeration process, the liquid storage device 4 can play a role in reducing the high pressure of the refrigerant, and the pressure is ensured not to exceed the limit value which can be borne by the heat exchange system.
Specifically, the liquid storage device 4 is a liquid storage tank.
Specifically, the liquid storage device 4 includes: a liquid storage case 40 having a storage chamber for storing a refrigerant; a first connection pipe 41 and a second connection pipe 42, both the first connection pipe 41 and the second connection pipe 42 being inserted in the storage cavity; wherein the first connecting pipe 41 is used for connecting with the throttle device 3; when the second connecting pipe 42 is connected with the inner machine heat exchanger 1, the throttling device 3 is connected with the outer machine heat exchanger 2; when the second connection pipe 42 is connected to the outer machine heat exchanger 2, the throttle device 3 is connected to the inner machine heat exchanger 1.
Preferably, the distance between the nozzle of the first connection tube 41 located in the storage cavity and the bottom of the liquid storage shell 40 is greater than the distance between the nozzle of the second connection tube 42 located in the storage cavity and the bottom of the liquid storage shell 40.
In this embodiment, the liquid storage device 4 is vertically installed, that is, is installed perpendicular to the chassis of the external unit, so as to ensure that after liquid enters from the first connection pipe 41, since the length of the first connection pipe 41 is greater than that of the second connection pipe 42, a height difference exists between the pipe orifice of the first connection pipe 41 and the pipe orifice of the second connection pipe 42 in a direction perpendicular to the chassis of the external unit. Therefore, a part of liquid refrigerant entering the storage cavity from the inner machine heat exchanger 1 or the outer machine heat exchanger 2 with a larger heat exchange area through the second connecting pipe 42 can be stored inside, and the liquid in the storage cavity can flow out from the first connecting pipe 41 after reaching a preset height, so that the aims of storing redundant liquid refrigerant and reducing the pressure of the system are fulfilled.
Preferably, the height difference between the nozzle of the first connection pipe 41 located in the storage cavity and the nozzle of the second connection pipe 42 located in the storage cavity is Δ h, the heat exchange area of the inner machine heat exchanger 1 is a1, and the heat exchange area of the outer machine heat exchanger 2 is a2, wherein: Δ h ═ a-A2-A1 | + b, and a and b are each 0 or more. Wherein a represents a coefficient in the formula, and b represents a constant term in the formula.
The height difference between the nozzle of the first connecting pipe 41 located in the storage cavity and the nozzle of the second connecting pipe 42 located in the storage cavity is Δ h, which is the difference between the distances between the nozzle of the first connecting pipe 41 and the nozzle of the second connecting pipe 42 along the direction perpendicular to the chassis of the external machine.
Specifically, when the heat exchange area of the inner machine heat exchanger 1 is smaller than or equal to the heat exchange area of the outer machine heat exchanger 2, the first connecting pipe 41 is connected with the outer machine heat exchanger 2 through the throttling device 3, and the second connecting pipe 42 is connected with the inner machine heat exchanger 1; when the heat exchange area of the inner machine heat exchanger 1 is larger than that of the outer machine heat exchanger 2, the first connection pipe 41 is connected to the inner machine heat exchanger 1 through the throttling device 3, and the second connection pipe 42 is connected to the outer machine heat exchanger 2.
As shown in fig. 1, in the embodiment, the heat exchange area of the inner heat exchanger 1 is smaller than or equal to the heat exchange area of the outer heat exchanger 2, and in the heating process, the liquid storage device 4 can store a part of the liquid refrigerant which is condensed at the inner heat exchanger 1 and then enters the storage cavity through the second connecting pipe 42. When the liquid in the storage cavity reaches a predetermined height, the liquid refrigerant flows out from the first connection pipe 41, so that the purpose of storing the redundant liquid refrigerant and reducing the pressure of the heat exchange system is achieved.
As shown in fig. 2, in the embodiment, the heat exchange area of the inner heat exchanger 1 is larger than that of the outer heat exchanger 2, and during the refrigeration process, the liquid storage device 4 may store a part of the liquid refrigerant that enters the storage cavity through the second connection pipe 42 after being condensed at the outer heat exchanger 2. When the liquid in the storage cavity reaches a predetermined height, the liquid refrigerant flows out from the first connection pipe 41, so that the purpose of storing the redundant liquid refrigerant and reducing the pressure of the heat exchange system is achieved.
Alternatively, the throttling means 3 is an expansion valve, or a capillary tube, or a throttling nipple. The heat exchange system can select different throttling devices 3 according to requirements.
Specifically, the heat exchange system further comprises: a compressor 5; the four-way valve 6 is arranged on the heat exchange circulation path, and the four-way valve 6 is positioned on one side of the inner machine heat exchanger 1 and the outer machine heat exchanger 2 far away from the liquid storage device 4; the four-way valve 6 comprises a first valve port, a second valve port, a third valve port and a fourth valve port, wherein the first valve port is connected with the inner machine heat exchanger 1, the second valve port is connected with the outer machine heat exchanger 2, the inlet of the third valve port compressor 5 is connected, and the fourth valve port is connected with the outlet of the compressor 5. Thus, the four-way valve 6 can send the low-temperature and low-pressure refrigerant in the heat exchange circulating pipeline into the compressor 5 and send the high-temperature and high-pressure refrigerant compressed by the compressor 5 out to the heat exchange circulating pipeline.
In the heat exchange system of the invention, an inner machine heat exchanger 1 is arranged at an indoor side 10, and an outer machine heat exchanger 2, a throttling device 3, a liquid storage device 4, a compressor 5 and a four-way valve 6 are all arranged at an outdoor side 20.
The invention also provides air conditioning equipment comprising the heat exchange system.
As shown in fig. 1, in the embodiment, when the indoor unit configuration is smaller than or equal to the outdoor unit configuration (i.e., the heat exchange area of the indoor unit heat exchanger 1 is smaller than or equal to the heat exchange area of the outdoor unit heat exchanger 2), the heat exchange system mainly includes a compressor 5, a four-way valve 6, the indoor unit heat exchanger 1, a throttling device 3, a liquid storage device 4, the outdoor unit heat exchanger 2, and the like, and the liquid storage device 4 is arranged on a pipeline between the throttling device 3 and the indoor unit heat exchanger 1. The refrigeration process and the heating process of the heat exchange system of the embodiment are respectively as follows:
and (3) a refrigeration process: the solid arrows in fig. 1 show the flow direction of the refrigerant in the refrigeration process, the high-temperature and high-pressure refrigerant coming out of the compressor 5 reaches the outer machine heat exchanger 2 through the four-way valve 6 to exchange heat with the air on the outdoor side 20, the high-temperature and high-pressure refrigerant is condensed to release heat to become high-pressure liquid, the high-temperature and high-pressure refrigerant is throttled by the throttling device 3 to become a low-temperature and low-pressure two-phase state (namely, the mixture of a gaseous refrigerant and a liquid refrigerant), after passing through the liquid storage device 4, a small part of liquid refrigerant is stored in the liquid storage device 4, the heat exchange process of the inner machine heat exchanger 1 is hardly influenced, the refrigerant flowing out of the liquid storage device 4 exchanges heat with the air on the indoor side 10 at the inner machine heat exchanger 1, the refrigerant is.
A heating process: the dotted arrow in fig. 1 indicates the flow direction of the refrigerant in the heating process, the high-temperature and high-pressure refrigerant coming out of the compressor 5 passes through the four-way valve 6 and reaches the indoor heat exchanger 1 to exchange heat with the air on the indoor side 10, the high-temperature and high-pressure refrigerant is condensed to release heat to become high-pressure liquid, a part of the refrigerant is stored in the liquid storage device 4 to play a role in reducing the pressure of the heat exchange system, the other part of the refrigerant is throttled by the throttling device 3 and then becomes a low-temperature and low-pressure two-phase state (namely, the mixture of the gaseous refrigerant and the liquid refrigerant), then the refrigerant exchanges heat with the air on the outdoor side 20 by the outdoor heat exchanger 2, and the refrigerant is evaporated to absorb heat and then becomes low-temperature gas to return.
As shown in fig. 2, when the indoor unit configuration is larger than the outdoor unit configuration (i.e., the heat exchange area of the indoor unit heat exchanger 1 is larger than the heat exchange area of the outdoor unit heat exchanger 2), the heat exchange system mainly includes a compressor 5, a four-way valve 6, the indoor unit heat exchanger 1, a throttling device 3, a liquid storage device 4, the outdoor unit heat exchanger 2, and the like, and the liquid storage device 4 is disposed on a pipeline between the outdoor unit heat exchanger 2 and the throttling device 3. The refrigeration process and the heating process of the heat exchange system of the embodiment are respectively as follows:
and (3) a refrigeration process: the solid arrows in fig. 2 show the flow direction of the refrigerant in the refrigeration process, the high-temperature and high-pressure refrigerant coming out of the compressor 5 passes through the four-way valve 6 and reaches the outer machine heat exchanger 2 to exchange heat with the air on the outdoor side 20, the high-temperature and high-pressure refrigerant is condensed to release heat to become high-pressure liquid, after passing through the liquid storage device 4, a part of the liquid refrigerant is stored in the liquid storage device 4 to play a role in reducing the pressure of the heat exchange system, the other part of the refrigerant flows out of the liquid storage device 4 and is throttled by the throttling device 3 to become a low-temperature and low-pressure two-phase state (namely, the mixture of the gaseous refrigerant and the liquid refrigerant), then the air on the inner machine heat exchanger 1 and the indoor side 10 exchanges heat, and the evaporated and.
A heating process: dotted arrows in fig. 2 indicate a flow direction of refrigerant in a heating process, high-temperature and high-pressure refrigerant coming out of the compressor 5 passes through the four-way valve 6 and reaches the indoor heat exchanger 1 to exchange heat with air on the indoor side 10, the high-temperature and high-pressure refrigerant is condensed to release heat to become high-pressure liquid, the high-temperature and high-pressure refrigerant is throttled by the throttling device 3 to become a low-temperature and low-pressure two-phase state, a small part of liquid refrigerant is stored in the liquid storage device 4, the heat exchange of the outdoor heat exchanger 2 is hardly affected, the refrigerant flowing out of the liquid storage device 4 exchanges heat with the air on the outdoor side 20 at the outdoor heat exchanger 2, and the refrigerant is evaporated to absorb heat and becomes low-temperature gas to return.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
according to the invention, the liquid storage device 4 is additionally arranged on the pipeline system positioned at the outdoor side 20, the position of the liquid storage device 4 is determined according to the size of the heat exchange area of the indoor unit heat exchanger 1 and the outdoor unit heat exchanger 2, on one hand, the refrigerant required by the heat exchange system is ensured, and the heat exchange efficiency of the indoor unit heat exchanger 1 and the outdoor unit heat exchanger 2 is improved, on the other hand, the liquid storage device 4 is used as a part for storing the refrigerant, a small part of the refrigerant can be stored, the amount of the refrigerant in the heat exchanger can be relatively reduced, the pressure in the heat exchanger can be reduced, and the high. By the method, different inner and outer machine combination and collocation can be realized, the universality of products is improved, the problem that the demand of the heat exchanger of the inner machine of the air conditioner and the demand of the heat exchanger of the outer machine of the air conditioner in the prior art are different to the refrigerant due to different heat exchange areas is solved, and the problem that the reliability of the heat exchanger is influenced due to overhigh pressure of the heat exchanger is also solved.
According to the invention, the liquid storage device 4 is additionally arranged on the pipeline system of the air conditioner outdoor unit, the position of the liquid storage device 4 is determined according to the size of the heat exchange area of the indoor unit heat exchanger 1 and the outdoor unit heat exchanger, on one hand, the refrigerant required by the heat exchange system is ensured, and the heat exchange efficiency of the indoor unit heat exchanger 1 and the outdoor unit heat exchanger 2 is improved, on the other hand, the liquid storage device 4 is used as a part for storing the refrigerant, the liquid storage device 4 stores a small part of the refrigerant, the amount of the refrigerant in the heat exchanger is relatively reduced, the pressure in the heat exchanger is reduced, and the. By the method, different inner and outer machine combination and collocation can be realized, the universality of products is improved, the problem that the demand of an inner machine heat exchanger and an outer machine heat exchanger of an air conditioner in the prior art on a refrigerant is different due to different heat exchange areas is solved, and the problem that the reliability of the heat exchanger is influenced due to overhigh pressure of the heat exchanger is also solved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A heat exchange system, comprising:
the indoor unit heat exchanger (1) is arranged on the indoor side (10) and is used for exchanging heat with air on the indoor side (10);
the outdoor unit heat exchanger (2) is arranged on the outdoor side (20) and used for exchanging heat with air on the outdoor side (20), and two ends of the indoor unit heat exchanger (1) are respectively communicated with two ends of the outdoor unit heat exchanger (2) to form a heat exchange circulation passage;
the throttling device (3) is arranged on a communicating pipeline between the inner machine heat exchanger (1) and the outer machine heat exchanger (2) to control the flow of the refrigerant in the heat exchange circulation passage;
the liquid storage device (4) is used for storing a refrigerant, the liquid storage device (4) is arranged on the heat exchange circulation passage, and the liquid storage device (4) is located between the throttling device (3) and the inner machine heat exchanger (1) or between the throttling device (3) and the outer machine heat exchanger (2).
2. The heat exchange system of claim 1,
when the heat exchange area of the inner machine heat exchanger (1) is smaller than or equal to that of the outer machine heat exchanger (2), the liquid storage device (4) is arranged between the throttling device (3) and the inner machine heat exchanger (1);
when the heat exchange area of the inner machine heat exchanger (1) is larger than that of the outer machine heat exchanger (2), the liquid storage device (4) is arranged between the throttling device (3) and the outer machine heat exchanger (2).
3. A heat exchange system according to claim 1, wherein the liquid storage means (4) is a liquid storage tank.
4. A heat exchange system according to claim 1, wherein the reservoir (4) comprises:
a liquid storage shell (40) which is provided with a storage cavity for storing a refrigerant;
a first connection pipe (41) and a second connection pipe (42), both the first connection pipe (41) and the second connection pipe (42) being inserted in the storage cavity;
the first connecting pipe (41) is used for being connected with the throttling device (3), and the second connecting pipe (42) is used for being connected with the internal machine heat exchanger (1) or the external machine heat exchanger (2); when the second connecting pipe (42) is connected with the internal machine heat exchanger (1), the throttling device (3) is connected with the external machine heat exchanger (2); when the second connecting pipe (42) is connected with the outer machine heat exchanger (2), the throttling device (3) is connected with the inner machine heat exchanger (1).
5. A heat exchange system according to claim 4, wherein the distance between the orifice of the first connection pipe (41) located in the storage chamber and the bottom of the liquid reservoir (40) is greater than the distance between the orifice of the second connection pipe (42) located in the storage chamber and the bottom of the liquid reservoir (40).
6. The heat exchange system according to claim 5, wherein the height difference between the nozzle of the first connecting pipe (41) located in the storage cavity and the nozzle of the second connecting pipe (42) located in the storage cavity is Δ h, the heat exchange area of the inner machine heat exchanger (1) is A1, and the heat exchange area of the outer machine heat exchanger (2) is A2, wherein: Δ h ═ a-A2-A1 | + b, and a and b are each 0 or more.
7. The heat exchange system according to claim 5 or 6,
when the heat exchange area of the inner machine heat exchanger (1) is smaller than or equal to that of the outer machine heat exchanger (2), the first connecting pipe (41) is connected with the outer machine heat exchanger (2) through the throttling device (3), and the second connecting pipe (42) is connected with the inner machine heat exchanger (1);
when the heat exchange area of the inner machine heat exchanger (1) is larger than that of the outer machine heat exchanger (2), the first connecting pipe (41) is connected with the inner machine heat exchanger (1) through the throttling device (3), and the second connecting pipe (42) is connected with the outer machine heat exchanger (2).
8. A heat exchange system according to claim 1, wherein the throttling means (3) is an expansion valve, or a capillary tube, or a throttling stub.
9. The heat exchange system of claim 1, further comprising:
a compressor (5);
the four-way valve (6), the four-way valve (6) is arranged on the heat exchange circulation path, and the four-way valve (6) is positioned on one side of the inner machine heat exchanger (1) and the outer machine heat exchanger (2) far away from the liquid storage device (4);
the four-way valve (6) comprises a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is connected with the inner machine heat exchanger (1), the second valve port is connected with the outer machine heat exchanger (2), the third valve port is connected with an inlet of the compressor (5), and the fourth valve port is connected with an outlet of the compressor (5).
10. An air conditioning apparatus, characterized by comprising the heat exchange system of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011186388.0A CN112303950A (en) | 2020-10-29 | 2020-10-29 | Heat exchange system and air conditioning equipment with same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011186388.0A CN112303950A (en) | 2020-10-29 | 2020-10-29 | Heat exchange system and air conditioning equipment with same |
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| CN112303950A true CN112303950A (en) | 2021-02-02 |
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| CN202011186388.0A Pending CN112303950A (en) | 2020-10-29 | 2020-10-29 | Heat exchange system and air conditioning equipment with same |
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| CN1227334A (en) * | 1998-02-23 | 1999-09-01 | 三菱电机株式会社 | Air conditioner |
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| CN111720901A (en) * | 2020-06-19 | 2020-09-29 | 北京创意信通科技有限责任公司 | Air conditioner outdoor unit, air conditioning equipment and control method |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227334A (en) * | 1998-02-23 | 1999-09-01 | 三菱电机株式会社 | Air conditioner |
| CN101338951A (en) * | 2008-08-18 | 2009-01-07 | 南京天加空调设备有限公司 | Water cooling heat pump type multiple air-conditioning unit |
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