CN219756688U - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
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- CN219756688U CN219756688U CN202320342820.3U CN202320342820U CN219756688U CN 219756688 U CN219756688 U CN 219756688U CN 202320342820 U CN202320342820 U CN 202320342820U CN 219756688 U CN219756688 U CN 219756688U
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- branch
- compressor
- air conditioning
- conditioning system
- working medium
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 42
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 36
- 238000000926 separation method Methods 0.000 claims description 16
- 239000002918 waste heat Substances 0.000 abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052799 carbon Inorganic materials 0.000 abstract description 9
- 238000005057 refrigeration Methods 0.000 abstract description 9
- 239000002440 industrial waste Substances 0.000 abstract description 7
- 230000009467 reduction Effects 0.000 abstract description 7
- 238000004134 energy conservation Methods 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 description 22
- 239000007789 gas Substances 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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- Other Air-Conditioning Systems (AREA)
Abstract
The utility model provides an air conditioning system, which comprises a first branch, a second branch and a third branch which are arranged in parallel, wherein: the first branch includes a condenser. The second leg includes an evaporator configured to absorb heat from the user space. The third leg includes a heat collection device configured to absorb heat from a first target space other than the user space. And the first branch further comprises a first compressor connected upstream of the condenser and/or the second branch further comprises a second compressor connected downstream of the evaporator. The air conditioning system of the utility model realizes the utilization of energy sources such as building waste heat, industrial waste heat or solar energy in the refrigeration air conditioning system, thereby saving energy sources and realizing energy conservation and carbon reduction.
Description
Technical Field
The utility model relates to the technical field of air conditioning, in particular to an air conditioning system.
Background
Under the large background of reducing carbon emission, how to realize the full utilization of waste heat to improve the energy efficiency of an air conditioning system is an urgent problem. At present, the utilization of building waste heat or industrial waste heat is concentrated on the utilization of waste heat for heating, and waste heat resources are often more in summer, so that the full utilization of the waste heat is an important way for energy conservation and carbon reduction in the energy field.
Disclosure of Invention
The present utility model has been made in view of the above problems, and has as its object to provide an air conditioning system which overcomes or at least partially solves the above problems, and which can perform cooling by using building waste heat or industrial waste heat to achieve energy saving and carbon reduction.
Specifically, the present utility model provides an air conditioning system comprising: the first branch road, second branch road and third branch road that parallelly connected set up, wherein:
the first branch comprises a condenser;
the second leg includes an evaporator configured to absorb heat from a user space;
the third leg includes a heat collection device configured to absorb heat from a first target space other than the user space; and
the first branch further comprises a first compressor connected upstream of the condenser and/or the second branch further comprises a second compressor connected downstream of the evaporator.
Optionally, the third branch further comprises an intermediate heat exchanger and/or a first gas-liquid separation device connected downstream of the heat collecting device, the intermediate heat exchanger and/or the first gas-liquid separation device being configured to vaporize the working medium flowing therethrough.
Optionally, the third branch further comprises a first throttling device and an intermediate heat exchanger connected in sequence downstream of the heat collecting device, the intermediate heat exchanger being configured to absorb heat of the second target space.
Optionally, the working medium pressure of the working medium in the second branch is lower than the working medium pressure of the working medium in the third branch.
Optionally, the second branch further comprises the second compressor and a second gas-liquid separation device connected in series between the evaporator and the second compressor.
Optionally, the second branch further comprises a second throttling device connected upstream of the evaporator; and/or
The third branch also comprises a working medium pump connected to the upstream of the heat collecting device.
Optionally, the second throttling device is an electronic expansion valve.
Optionally, the first throttling device is an electronic expansion valve.
Optionally, the first branch further comprises the first compressor and the second branch further comprises the second compressor; and
the working pressure of the working medium in the second compressor is lower than the working pressure of the working medium in the first compressor.
Optionally, the heat collecting device is an evaporative heat exchanger.
The first branch, the second branch and the third branch connected in parallel in the air conditioning system have different functions, and the first branch mainly utilizes the condenser to perform heat exchange on the high-temperature gas working medium discharged by the first compressor so as to change the working medium passing through the first branch from a high-temperature gas state to a liquid state with lower temperature. The second branch mainly uses the evaporator to absorb the heat of the user space to realize the refrigeration of the user space. The third branch mainly utilizes the heat collecting device to absorb heat of a first target space of the non-user space, and the first target space can be a roof of a building, or the non-user space in the building. The matched use of the first compressor and the second compressor can reduce the requirement of refrigeration on the performance of a single compressor, thereby reducing the manufacturing difficulty and prolonging the service life of the single compressor. The arrangement realizes the utilization of energy sources such as building waste heat, industrial waste heat or solar energy in the refrigeration air conditioning system, thereby saving energy sources and realizing energy conservation and carbon reduction. .
The above, as well as additional objectives, advantages, and features of the present utility model will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present utility model when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
fig. 1 is a schematic view of an air conditioning system according to an embodiment of the present utility model.
Detailed Description
An air conditioning system according to an embodiment of the present utility model will be described below with reference to fig. 1. Where the terms "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", "transverse", etc., refer to an orientation or positional relationship based on that shown in the drawings, this is merely for convenience in describing the utility model and to simplify the description, and does not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may include at least one, i.e. one or more, of the feature, either explicitly or implicitly. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. When a feature "comprises or includes" a feature or some of its coverage, this indicates that other features are not excluded and may further include other features, unless expressly stated otherwise.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," "coupled," and the like should be construed broadly, as they may be fixed, removable, or integral, for example; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. Those of ordinary skill in the art will understand the specific meaning of the terms described above in the present utility model as the case may be.
The utility model provides an air conditioning system. An air conditioning system is a system that artificially treats the temperature, humidity, cleanliness, and air flow rate of indoor air. Can make certain places obtain air with certain temperature, humidity and air quality so as to meet the requirements of users and production processes and improve the labor sanitation and indoor climate conditions. Under the big background of double carbon, the full utilization of waste heat is realized, and the energy efficiency of an air conditioning system is improved, which is an urgent problem. At present, the utilization of building waste heat or industrial waste heat is concentrated on waste heat for heating, and waste heat resources are often more in summer, so that the full utilization of the waste heat is an important way for energy conservation and carbon reduction in the energy field.
The air conditioning system of the present specification is mainly used for adjusting the temperature of a user space. Fig. 1 is a schematic view of an air conditioning system according to an embodiment of the present utility model, which includes a first branch 10, a second branch 20, and a third branch 30 arranged in parallel, wherein: the first branch 10 comprises a condenser 12. The second branch 20 comprises an evaporator 22, the evaporator 22 being configured to absorb heat from the user space. The third leg 30 includes a heat collector 32, the heat collector 32 being configured to absorb heat from a first target space other than the user space. And the first branch 10 further comprises a first compressor 11 connected upstream of the condenser 12, and the second branch 20 further comprises a second compressor 24 connected downstream of the evaporator 22.
The condenser 12 is a component of an air conditioning system, which is a type of heat exchanger, capable of converting a gas or vapor into a liquid, and transferring heat from a tube to air in the vicinity of the tube in a rapid manner. The condenser 12 operation is exothermic, so the condenser 12 temperature is relatively high. Evaporation is the physical process of converting a liquid state into a gaseous state. Generally, the evaporator 22 is a component that converts a liquid substance into a gaseous substance. The evaporator 22 is an important component in an air conditioning system, and low-temperature condensed liquid passes through the evaporator 22 to exchange heat with the outside air, so that gasification absorbs heat and the refrigerating effect is achieved. The evaporator 22 is mainly composed of two parts, a heating chamber and an evaporating chamber. The heating chamber provides the heat required for evaporation to the liquid, causing the liquid to boil and evaporate. The evaporating chamber makes the gas-liquid phase completely separate. The compressor is a driven fluid machine that lifts low-pressure gas to high-pressure gas, and is the heart of an air conditioning system. The low-temperature low-pressure refrigerant gas is sucked from the air suction pipe, compressed by the operation of the motor, and then discharged to the air discharge pipe to supply power for the refrigeration cycle.
The first branch 10, the second branch 20 and the third branch 30 connected in parallel in the air conditioning system have different functions, and the first branch 10 mainly uses the condenser 12 to perform heat exchange on the high-temperature gas working medium discharged by the first compressor 11, so that the working medium passing through the first branch 10 is changed from a high-temperature gas state to a liquid state with lower temperature. The second branch 20 mainly uses the evaporator 22 to absorb heat of the user space to realize refrigeration of the user space. The third branch 30 mainly uses the heat collecting device 32 to absorb heat in a first target space of a non-user space, and the first target space may be a roof of a building, or may be a non-user space in a building. The use of the first compressor 11 and the second compressor 24 in combination reduces the refrigeration requirements for the performance of the individual compressors, thereby reducing manufacturing difficulties and increasing the service life of the individual compressors. The arrangement realizes the utilization of energy sources such as building waste heat, industrial waste heat or solar energy in the refrigeration air conditioning system, thereby saving energy sources and realizing energy conservation and carbon reduction.
In other embodiments of the present utility model, only the first branch 10 of the air conditioning system is provided with a compressor, namely the first compressor 11, the exhaust port of the first compressor 11 is communicated with the inlet of the condenser 12, and the suction port of the first compressor 11 is communicated with the outlet of the evaporator 22 of the second branch 20.
In other embodiments of the present utility model, only the second branch 20 of the air conditioning system is provided with a compressor, namely the second compressor 24, the exhaust port of the second compressor 24 is communicated with the inlet of the condenser 12 of the first branch 10, and the suction port of the second compressor 24 is communicated with the outlet of the evaporator 22.
Of course, in other embodiments of the present utility model, the condenser 12 in the air conditioning system may also dissipate heat to the user space to provide heat to the user, while the evaporator 22 absorbs heat from the non-user space. Such an air conditioning system is a heat pump. In the heat pump system, the energy sources such as building waste heat, industrial waste heat or solar energy can be utilized, so that the energy sources are saved, and the energy conservation and carbon reduction are realized.
In some embodiments of the present utility model, third branch 30 further comprises an intermediate heat exchanger 34 and a first gas-liquid separation device connected downstream of heat collection device 32, intermediate heat exchanger 34 and the first gas-liquid separation device being configured to vaporize the working medium flowing therethrough. The intermediate heat exchanger 34 is primarily configured to exchange heat between the working fluid flowing therethrough and the surrounding environment. The gas-liquid separation device mainly separates the mixed gas-liquid working medium entering the evaporator 22, collects liquid working medium and prevents the liquid accumulation of the compressor. The third branch 30 communicates with the suction port of the first compressor 11 or the second compressor 24. The working medium passing through the heat collecting device 32 absorbs enough heat to be in a gaseous state, but if the absorbed heat is insufficient, the working medium passing through the third branch 30 may not be completely vaporized to be in a gaseous state, in order to ensure that the working medium passing through the third branch 30 is completely vaporized to be in a gaseous state, an intermediate heat exchanger 34 and a first gas-liquid separation device are arranged, the intermediate heat exchanger 34 absorbs the heat to promote the vaporization of the working medium, and the first gas-liquid separation device can collect the working medium in a liquid state. The simultaneous use of the intermediate heat exchanger 34 and the first gas-liquid separation device ensures that the working medium of the third branch 30 is completely vaporized.
In other embodiments of the present utility model, third leg 30 further includes an intermediate heat exchanger 34 connected downstream of heat collector 32, intermediate heat exchanger 34 configured to vaporize the working fluid flowing therethrough.
In other embodiments of the present utility model, third branch 30 further includes a first gas-liquid separation device coupled downstream of heat collection device 32, the first gas-liquid separation device configured to vaporize a working fluid flowing therethrough.
In some embodiments of the utility model, the third branch 30 further comprises a first throttling means 33 and an intermediate heat exchanger 34 connected in sequence downstream of the heat collecting means 32, the intermediate heat exchanger 34 being configured to absorb heat of the second target space. The function of the throttling device is to throttle the saturated liquid (or sub-cooled liquid) at the condensing pressure in the condenser 12 down to the evaporating pressure and evaporating temperature, while adjusting the flow of refrigerant into the evaporator 22 in accordance with the load change. The first throttling device 33 can also adjust the pressure of the third branch 30, and the intermediate heat exchanger 34 absorbs the heat of the space of the second target different from the first target, so that the air conditioning system can absorb and utilize the waste heat in more links, and the working medium in the third branch 30 passing through the intermediate heat exchanger 34 is completely vaporized.
In some embodiments of the present utility model, the working fluid pressure in second branch 20 is lower than the working fluid pressure in third branch 30.
Further, in some embodiments of the present utility model, the second branch 20 further comprises a second throttling device 21 connected upstream of the evaporator 22 and the third branch 30 further comprises a working fluid pump 31 connected upstream of the heat collecting device 32. The pressure of the working fluid flowing out of the condenser 12 becomes smaller after flowing through the second throttling device 21, and the pressure of the working fluid flowing out of the condenser 12 is raised after flowing through the working fluid pump 31. The above arrangement results in the working fluid pressure in the second branch 20 being lower than the working fluid pressure in the third branch 30.
In other embodiments of the utility model, the second branch 20 further comprises a second throttling means 21 connected upstream of the evaporator 22. The pressure of the working medium flowing out of the condenser 12 becomes smaller after flowing through the second throttling means 21, and the above arrangement makes the working medium pressure in the second branch 20 lower than the working medium pressure in the third branch 30.
In other embodiments of the present utility model, third branch 30 further includes a working fluid pump 31 connected upstream of a heat collection device 32. The pressure of the working fluid flowing out of the condenser 12 is raised after flowing through the working fluid pump 31, and the above arrangement makes the working fluid pressure of the working fluid in the second branch 20 lower than the working fluid pressure of the working fluid in the third branch 30.
In some embodiments of the present utility model, the second branch 20 further includes a second compressor 24 and a second gas-liquid separation device disposed in series between the evaporator 22 and the second compressor 24. The second gas-liquid separation device here also allows the liquid working medium to be collected, ensuring that the working medium entering the suction port of the second compressor 24 is gaseous.
In some embodiments of the utility model, the second throttling means 21 is an electronic expansion valve. Common throttling devices are capillaries, thermal expansion valves, electronic expansion valves, float valves, etc. Preferably, the second throttling means 21 is an electronic expansion valve.
In some embodiments of the present utility model, the first restriction device 33 is an electronic expansion valve. Preferably, the first throttling means 33 is an electronic expansion valve.
In some embodiments of the utility model, the first branch 10 further comprises a first compressor 11 and the second branch 20 further comprises a second compressor 24. And the working fluid pressure of the working fluid in the second compressor 24 is lower than the working pressure of the working fluid in the first compressor 11. The second compressor 24 is a low-pressure compressor with respect to the first compressor 11 such that the working medium pressure in the second compressor 24 is lower than the working pressure of the working medium in the first compressor 11.
In some embodiments of the present utility model, heat collection device 32 is an evaporative heat exchanger. The heat collector 32 may be a solar heat collector or an evaporative heat exchanger, and may be a suitable heat collector according to the source of waste heat. In this embodiment, the waste heat utilized is mainly from the building, where the heat collector 32 is suitably an evaporative heat exchanger.
In some embodiments of the present utility model, when the first branch 10 is provided with a compressor and includes only the first compressor 11, and when the second branch 20 is provided with a compressor and includes only the second compressor 24, the exhaust port of the second compressor 24 is in communication with the suction port of the first compressor 11 through a pipe, the outlet of the intermediate heat exchanger 34 is in communication with this pipe, and the high-pressure gaseous working medium that absorbs heat and is completely vaporized in the intermediate heat exchanger 34 is mixed in the pipe with the gaseous working medium discharged from the second compressor 24 and then enters the suction port of the first compressor 11. This arrangement can reduce the discharge pressure of the second compressor 24 and can also increase the suction pressure of the first compressor 11, improving energy efficiency.
In other embodiments of the present utility model, only the first branch 10 of the air conditioning system is provided with a compressor, which is the first compressor 11, and the outlet of the intermediate heat exchanger 34 is in communication with the suction port of the first compressor 11, and the high-pressure gaseous working medium that absorbs heat and is completely vaporized in the intermediate heat exchanger 34 enters the suction port of the first compressor 11. This arrangement can increase the suction pressure of the first compressor 11 and improve the energy efficiency.
In other embodiments of the present utility model, only the second branch 20 of the air conditioning system is provided with a compressor, which is the second compressor 24, and the outlet of the intermediate heat exchanger 34 is in communication with the suction port of the second compressor 24, and the high-pressure gaseous working medium that is fully vaporized by absorbing heat in the intermediate heat exchanger 34 enters the suction port of the second compressor 24. This arrangement can increase the suction pressure of the second compressor 24, improving energy efficiency.
In some embodiments of the present utility model, the first branch 10 comprises a first compressor 11 and a condenser 12 arranged in series. The second branch 20 comprises a second electronic expansion valve, an evaporator 22, a second gas-liquid separator 23 and a second compressor 24 which are arranged in series, wherein the inlet of the second electronic expansion valve is communicated with the outlet of the condenser 12 through a pipeline, and the exhaust port of the second compressor 24 is communicated with the air inlet of the first compressor 11 through a pipeline. The third branch 30 comprises a working medium pump 31, an evaporation type heat exchanger, a first electronic expansion valve and an intermediate heat exchanger 34 which are arranged in series, wherein the working medium pump 31 is connected with the outlet of the condenser 12 through a pipeline, and the outlet of the intermediate heat exchanger 34 is connected with the pipelines of the first compressor 11 and the second compressor 24. The first compressor 11 discharges high-temperature and high-pressure gaseous working medium, after radiating outwards through the condenser 12, the gaseous working medium is changed into liquid state common substance, a part of liquid state working medium absorbs heat of a user space after passing through the evaporator 22, refrigeration of the user space is completed, the part of liquid state common substance becomes Cheng Qitai, the second compressor 24 sucks the gaseous working medium, works through the second compressor 24, discharges the gaseous working medium, and enters the first compressor 11. And a part of liquid working medium passing through the condenser 12 enters the evaporative heat exchanger under the action of the working medium pump 31 to absorb heat of a first target space of a non-user space, the part of liquid working medium is changed into a gaseous state, the gaseous working medium passes through the intermediate heat exchanger 34 to absorb heat of a second target space, after the working medium is completely vaporized, the working medium enters the pipelines of the first compressor 11 and the second compressor 24, and the evaporative heat exchanger and the intermediate heat exchanger 34 absorb waste heat of the non-user space, so that the utilization of the waste heat is completed.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the utility model have been shown and described herein in detail, many other variations or modifications of the utility model consistent with the principles of the utility model may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the utility model. Accordingly, the scope of the present utility model should be understood and deemed to cover all such other variations or modifications.
Claims (10)
1. An air conditioning system comprising a first leg, a second leg, and a third leg arranged in parallel, wherein:
the first branch comprises a condenser;
the second leg includes an evaporator configured to absorb heat from a user space;
the third leg includes a heat collection device configured to absorb heat from a first target space other than the user space; and
the first branch further comprises a first compressor connected upstream of the condenser and/or the second branch further comprises a second compressor connected downstream of the evaporator.
2. An air conditioning system according to claim 1, wherein,
the third branch also comprises an intermediate heat exchanger and/or a first gas-liquid separation device connected at the downstream of the heat collecting device, and the intermediate heat exchanger and/or the first gas-liquid separation device are configured to vaporize working medium flowing through.
3. An air conditioning system according to claim 1, wherein,
the third branch further comprises a first throttling device and an intermediate heat exchanger which are sequentially connected downstream of the heat collecting device, and the intermediate heat exchanger is configured to absorb heat of the second target space.
4. An air conditioning system according to claim 1, wherein,
the working medium pressure of the working medium in the second branch is lower than the working medium pressure of the working medium in the third branch.
5. An air conditioning system according to claim 1, wherein,
the second branch also comprises the second compressor and a second gas-liquid separation device which is connected in series between the evaporator and the second compressor.
6. The air conditioning system of claim 4, wherein the air conditioning system comprises,
the second branch further comprises a second throttling means connected upstream of the evaporator; and/or
The third branch also comprises a working medium pump connected to the upstream of the heat collecting device.
7. An air conditioning system according to claim 6, wherein,
the second throttling device is an electronic expansion valve.
8. An air conditioning system according to claim 3, wherein,
the first throttling device is an electronic expansion valve.
9. An air conditioning system according to claim 1, wherein,
the first branch further comprises the first compressor and the second branch further comprises the second compressor; and
the working pressure of the working medium in the second compressor is lower than the working pressure of the working medium in the first compressor.
10. An air conditioning system according to claim 1, wherein,
the heat collecting device is an evaporative heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320342820.3U CN219756688U (en) | 2023-02-27 | 2023-02-27 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320342820.3U CN219756688U (en) | 2023-02-27 | 2023-02-27 | Air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219756688U true CN219756688U (en) | 2023-09-26 |
Family
ID=88075258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320342820.3U Active CN219756688U (en) | 2023-02-27 | 2023-02-27 | Air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219756688U (en) |
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2023
- 2023-02-27 CN CN202320342820.3U patent/CN219756688U/en active Active
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