CN212057820U - Refrigeration system - Google Patents
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- CN212057820U CN212057820U CN202020681414.6U CN202020681414U CN212057820U CN 212057820 U CN212057820 U CN 212057820U CN 202020681414 U CN202020681414 U CN 202020681414U CN 212057820 U CN212057820 U CN 212057820U
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Abstract
The application relates to a refrigeration system, which comprises a compressor, a condenser, a gas-liquid heat exchanger, a throttling device and an evaporator; in the refrigeration mode, a refrigerant is output from the compressor, sequentially flows through the condenser, the gas-liquid heat exchanger, the throttling device and the evaporator, flows back to the gas-liquid heat exchanger, and then flows back to the compressor through the gas-liquid heat exchanger; under the heating mode, the refrigerant flows through the evaporator, the gas-liquid heat exchanger, the throttling device and the condenser in sequence from the compressor, flows back to the gas-liquid heat exchanger, and then flows back to the compressor through the gas-liquid heat exchanger, so that the refrigerating system can perform heat recovery treatment on the refrigerant in the refrigerating cycle process and the heating cycle process, and the performance of the refrigerating system is improved.
Description
Technical Field
The application relates to the technical field of refrigeration, in particular to a refrigeration system.
Background
With the continuous development of refrigeration technology, the application of refrigeration systems is more and more extensive, and the performance of the refrigeration systems is also required to be higher and higher. In order to provide the performance of a refrigeration system, a gas-liquid heat exchanger is generally added in the refrigeration system, and the gas-liquid heat exchanger is also called as a heat regenerator, and the function of the gas-liquid heat exchanger is to perform heat exchange between low-temperature low-pressure vapor from an evaporator and liquid refrigerant before throttling, so as to increase the supercooling degree of the refrigerant before throttling and increase the effective superheat degree of return air of the system, thereby improving the performance of the refrigeration system, but the conventional refrigeration system can only realize heat regeneration in a refrigeration mode or a heating mode alone at present, and therefore, in the implementation process, the inventor finds that at least the following problems exist in the conventional technology: the conventional cooling and heating type refrigerating system cannot perform the back heating in both the cooling and heating modes.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a refrigeration system for solving the problem that the conventional cooling and heating type refrigeration system cannot perform the heat regeneration in both the cooling mode and the heating mode.
In order to achieve the above object, an embodiment of the present application provides a refrigeration system, including a compressor, a condenser, a gas-liquid heat exchanger, a throttling device, and an evaporator;
in a refrigeration mode, a refrigerant is output from the compressor, sequentially flows through the condenser, the gas-liquid heat exchanger, the throttling device and the evaporator, flows back to the gas-liquid heat exchanger, and then flows back to the compressor through the gas-liquid heat exchanger;
in the heating mode, the refrigerant is output from the compressor, sequentially flows through the evaporator, the gas-liquid heat exchanger, the throttling device and the condenser, flows back to the gas-liquid heat exchanger, and then flows back to the compressor through the gas-liquid heat exchanger.
In one embodiment, the device further comprises a gas-liquid separator;
in a refrigeration mode, a refrigerant is output from the compressor, sequentially flows through the condenser, the gas-liquid heat exchanger, the throttling device and the evaporator, flows back to the gas-liquid heat exchanger, is output by the gas-liquid heat exchanger, flows through the gas-liquid separator and flows back to the compressor;
in the heating mode, the refrigerant is output from the compressor, sequentially flows through the evaporator, the gas-liquid heat exchanger, the throttling device and the condenser, flows back to the gas-liquid heat exchanger, is output by the gas-liquid heat exchanger, flows through the gas-liquid separator and flows back to the compressor.
In one embodiment, the four-way valve further comprises a four-way valve, a first one-way valve, a second one-way valve, a third one-way valve and a fourth one-way valve;
the first port of the compressor is communicated with the first port of the four-way valve;
the first port of the condenser is communicated with the second port of the four-way valve, and the second port is communicated with the input end of the first one-way valve and the output end of the fourth one-way valve;
a first port of the gas-liquid heat exchanger is respectively communicated with the output end of the first one-way valve and the output end of the third one-way valve, a second port of the gas-liquid heat exchanger is respectively communicated with the input end of the second one-way valve and the input end of the fourth one-way valve through a throttling device, a third port of the gas-liquid heat exchanger is communicated with a third port of the four-way valve, and a fourth port of the gas-liquid heat exchanger is communicated with a;
and a first port of the evaporator is respectively communicated with the output end of the second one-way valve and the input end of the third one-way valve.
In one embodiment, the device further comprises a gas-liquid separator;
and the fourth port of the gas-liquid heat exchanger is communicated with the second port of the compressor through a gas-liquid separator.
In one embodiment, the gas-liquid heat exchanger is a gas-liquid separator with heat exchange tubes.
In one embodiment, the gas-to-liquid heat exchanger is a double tube heat exchanger, a plate heat exchanger, a shell and tube heat exchanger, a coil heat exchanger, or a patch heat exchanger.
In one embodiment, the compressor is a reciprocating compressor, a rotary compressor, a scroll compressor, or a screw compressor.
In one embodiment, the condenser is a water cooled condenser, an air cooled condenser, or an evaporative condenser.
In one embodiment, the evaporator is a flooded evaporator or a dry evaporator.
In one embodiment, the throttling device is a manual expansion valve, a thermostatic expansion valve, an electronic expansion valve, or a capillary tube.
One of the above technical solutions has the following advantages and beneficial effects:
the refrigeration system provided by each embodiment of the application comprises a compressor, a condenser, a gas-liquid heat exchanger, a throttling device and an evaporator; in the refrigeration mode, a refrigerant is output from the compressor, sequentially flows through the condenser, the gas-liquid heat exchanger, the throttling device and the evaporator, flows back to the gas-liquid heat exchanger, and then flows back to the compressor through the gas-liquid heat exchanger; under the heating mode, the refrigerant flows through the evaporator, the gas-liquid heat exchanger, the throttling device and the condenser in sequence from the compressor, flows back to the gas-liquid heat exchanger, and then flows back to the compressor through the gas-liquid heat exchanger, so that the refrigerating system can perform heat recovery treatment on the refrigerant in the refrigerating cycle process and the heating cycle process, and the performance of the refrigerating system is improved.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular description of preferred embodiments of the application, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the subject matter of the present application.
FIG. 1 is a schematic diagram of the construction of a refrigeration system in one embodiment;
FIG. 2 is a schematic view of the connection configuration of the refrigeration system in one embodiment;
FIG. 3 is a schematic diagram of the construction of a refrigeration system in another embodiment;
fig. 4 is a schematic view of a connection structure of a refrigeration system in another embodiment.
Description of reference numerals:
11. a compressor; 13. a condenser; 15. a gas-liquid heat exchanger; 17. a throttling device; 19. an evaporator; 21. a four-way valve; 23. a first check valve; 25. a second one-way valve; 27. a third check valve; 29. a fourth check valve; 31. a gas-liquid separator.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "in communication with" another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "first port", "second port", and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In order to solve the problem of poor performance of the conventional cooling and heating type refrigeration system, in one embodiment, as shown in fig. 1, there is provided a refrigeration system including a compressor 11, a condenser 13, a liquid-gas heat exchanger 15, a throttle device 17, and an evaporator 19;
in the refrigeration mode, the refrigerant is output from the compressor 11, sequentially flows through the condenser 13, the gas-liquid heat exchanger 15, the throttling device 17 and the evaporator 19, flows back to the gas-liquid heat exchanger 15, and then flows back to the compressor 11 from the gas-liquid heat exchanger 15;
in the heating mode, the refrigerant is output from the compressor 11, flows through the evaporator 19, the gas-liquid heat exchanger 15, the throttle device 17, and the condenser 13 in this order, flows back to the gas-liquid heat exchanger 15, and flows back to the compressor 11 from the gas-liquid heat exchanger 15.
It should be noted that the compressor 11 is a core energy consuming component of the refrigeration system, which can increase the efficiency of the refrigeration system and reduce the energy consumption of the refrigeration system. In one example, the compressor 11 is a piston compressor, a rotary compressor 11, a scroll compressor 11, a screw compressor 11, or the like.
The condenser 13 belongs to a heat exchanger that is capable of converting gas or vapour into liquid and transferring the heat in the tubes to the air in the vicinity of the tubes in a rapid manner. In one example, the condenser 13 is a water-cooled condenser 13, an air-cooled condenser 13, an evaporative condenser 13, or the like.
The gas-liquid heat exchanger 15 is a heat exchange device in a refrigeration system that cools high-pressure refrigerant liquid before throttling by using low-temperature low-pressure steam from an evaporator 19, thereby supercooling the refrigerant liquid and superheating the refrigerant steam. In one example, the gas-liquid heat exchanger 15 is a gas-liquid separator 31 with a heat exchange pipe.
The throttle device 17 throttles the medium-temperature high-pressure refrigerant liquid to become a low-temperature low-pressure refrigerant. In one example, the throttling device 17 may be a manual expansion valve, a thermal expansion valve, an electronic expansion valve, or a capillary tube, etc.
The evaporator 19 is used for heat exchange between the low-temperature refrigerant liquid and the external air, so that the low-temperature refrigerant liquid is gasified to absorb heat, and the refrigeration effect is achieved. In one example, the evaporator 19 is a flooded evaporator 19 or a dry evaporator 19 or the like.
The refrigerant circulation path in the refrigeration system in this embodiment is as follows: in the refrigeration mode, the compressor 11 compresses and outputs a refrigerant, the refrigerant sequentially flows through the condenser 13, the gas-liquid heat exchanger 15, the throttling device 17 and the evaporator 19, then flows back to the gas-liquid heat exchanger 15, and the gas-liquid heat exchanger 15 transmits the refrigerant back to the compressor 11;
in the heating mode, the compressor 11 compresses and outputs a refrigerant, the refrigerant sequentially flows through the evaporator 19, the gas-liquid heat exchanger 15, the throttling device 17 and the condenser 13, the refrigerant flows back to the gas-liquid heat exchanger 15, and the gas-liquid heat exchanger 15 transmits the refrigerant back to the compressor 11.
In one embodiment, a connection of the compressor 11, the condenser 13, the liquid-gas heat exchanger 15, the throttle device 17 and the evaporator 19 is provided (as shown in fig. 2): the refrigeration system further comprises a four-way valve 21, a first check valve 23, a second check valve 25, a third check valve 27 and a fourth check valve 29;
a first port of the compressor 11 is communicated with a first port of the four-way valve 21;
a first port of the condenser 13 is communicated with a second port of the four-way valve 21, and the second port is respectively communicated with an input end of the first one-way valve 23 and an output end of the fourth one-way valve 29;
a first port of the gas-liquid heat exchanger 15 is communicated with an output end of the first check valve 23 and an output end of the third check valve 27, a second port is communicated with an input end of the second check valve 25 and an input end of the fourth check valve 29 through the expansion valve 17, a third port is communicated with a third port of the four-way valve 21, and a fourth port is communicated with a second port of the compressor 11;
a first port of the evaporator 19 communicates with an output of the second check valve 25 and an input of the third check valve 27, respectively.
It should be noted that, in this embodiment, the flow path of the refrigerant is as follows: in the cooling mode, the compressor 11 flows in through the first port of the four-way valve 21 and flows out through the second port of the four-way valve 21 to transmit the refrigerant to the condenser 13, the condenser 13 inputs the refrigerant from the first port of the gas-liquid heat exchanger 15 to the gas-liquid heat exchanger 15 through the first check valve 23, the gas-liquid heat exchanger 15 transmits the refrigerant from the second port thereof to the evaporator 19 through the throttling device 17 and the second check valve 25 in order, the evaporator 19 flows in through the fourth port of the four-way valve 21 and flows out through the third port of the four-way valve 21 to flow the refrigerant from the third port of the gas-liquid heat exchanger 15 into the gas-liquid heat exchanger 15, and the gas-liquid heat exchanger 15 returns the refrigerant to the compressor 11 through the fourth port thereof.
In the heating mode, the compressor 11 flows in through the first port of the four-way valve 21 and flows out through the fourth port of the four-way valve 21 to transmit the refrigerant to the evaporator 19, the evaporator 19 transmits the refrigerant through the third check valve 27 to transmit the refrigerant from the first port of the gas-liquid heat exchanger 15 to the gas-liquid heat exchanger 15, the gas-liquid heat exchanger 15 transmits the refrigerant from the second port thereof to the condenser 13 through the throttle device 17 and the fourth check valve 29 in sequence, the condenser 13 flows in through the second port of the four-way valve 21 and flows out through the third port of the four-way valve 21 to return the refrigerant from the third port of the gas-liquid heat exchanger 15 to the gas-liquid heat exchanger 15, and the gas-liquid heat exchanger 15 returns the refrigerant to the compressor 11 through the fourth port thereof.
Various embodiments of the refrigeration system of the present application provide a refrigeration system that includes a compressor 11, a condenser 13, a liquid-gas heat exchanger 15, a throttle device 17, and an evaporator 19; in the cooling mode, the refrigerant is output from the compressor 11, sequentially flows through the condenser 13, the gas-liquid heat exchanger 15, the expansion valve 17 and the evaporator 19, flows back to the gas-liquid heat exchanger 15, and then flows back to the compressor 11 through the gas-liquid heat exchanger 15; under the heating mode, the refrigerant is output from the compressor 11, flows through the evaporator 19, the gas-liquid heat exchanger 15, the throttling device 17 and the condenser 13 in sequence, flows back to the gas-liquid heat exchanger 15, and flows back to the compressor 11 through the gas-liquid heat exchanger 15, so that the refrigerating system can perform heat recovery treatment on the refrigerant in the refrigerating cycle process and the heating cycle process, and further the performance of the refrigerating system is improved.
In one embodiment, as shown in fig. 3, the refrigeration system includes a compressor 11, a condenser 13, a liquid-liquid heat exchanger 15, a throttle device 17, and an evaporator 19; also comprises a gas-liquid separator 31;
in the refrigeration mode, the refrigerant is output from the compressor 11, sequentially flows through the condenser 13, the gas-liquid heat exchanger 15, the throttling device 17 and the evaporator 19, flows back to the gas-liquid heat exchanger 15, is output from the gas-liquid heat exchanger 15, flows through the gas-liquid separator 31 and flows back to the compressor 11;
in the heating mode, the refrigerant is output from the compressor 11, flows through the evaporator 19, the gas-liquid heat exchanger 15, the throttle device 17, and the condenser 13 in this order, flows back to the gas-liquid heat exchanger 15, is output from the gas-liquid heat exchanger 15, flows through the gas-liquid separator 31, and flows back to the compressor 11.
It should be noted that the compressor 11, the condenser 13, the gas-liquid heat exchanger 15, the expansion valve 17, and the evaporator 19 in this embodiment are the same as the compressor 11, the condenser 13, the gas-liquid heat exchanger 15, the throttling device 17, and the evaporator 19 in the foregoing embodiments, and detailed description is omitted here for the sake of brevity.
The gas-liquid separator 31 is installed at an inlet and an outlet of the compressor 11 for gas-liquid separation. In one example, the gas-liquid heat exchanger 15 is a double-tube heat exchanger, a plate heat exchanger, a shell-and-tube heat exchanger, a coil heat exchanger, a patch heat exchanger, or the like.
The refrigerant circulation path in the refrigeration system in this embodiment is as follows: in the refrigeration mode, the compressor 11 compresses and outputs a refrigerant, the refrigerant sequentially flows through the condenser 13, the gas-liquid heat exchanger 15, the throttling device 17 and the evaporator 19, then flows back to the gas-liquid heat exchanger 15, and the refrigerant output by the gas-liquid heat exchanger 15 flows back to the compressor 11 through the gas-liquid separator 31;
in the heating mode, the compressor 11 compresses an output refrigerant, the refrigerant sequentially flows through the evaporator 19, the gas-liquid heat exchanger 15, the throttle device 17 and the condenser 13, the refrigerant flows back to the gas-liquid heat exchanger 15, and the refrigerant output by the gas-liquid heat exchanger 15 flows back to the compressor 11 through the gas-liquid separator 31.
In one embodiment, there is provided a connection manner of the compressor 11, the condenser 13, the gas-liquid heat exchanger 15, the throttling device 17, the evaporator 19 and the gas-liquid separator 31 (as shown in fig. 4): the refrigeration system further comprises a four-way valve 21, a first check valve 23, a second check valve 25, a third check valve 27 and a fourth check valve 29;
a first port of the compressor 11 is communicated with a first port of the four-way valve 21;
a first port of the condenser 13 is communicated with a second port of the four-way valve 21, and a second port of the condenser is communicated with an input end of the first one-way valve 23 and an output end of the fourth one-way valve 29 respectively;
a first port of the gas-liquid heat exchanger 15 is communicated with an output end of the first check valve 23 and an output end of the third check valve 27 respectively, a second port is communicated with an input end of the second check valve 25 and an input end of the fourth check valve 29 respectively through a throttling device 17, a third port is communicated with a third port of the four-way valve 21, and a fourth port is communicated with a second port of the compressor 11 through a gas-liquid separator 31;
a first port of the evaporator 19 communicates with an output of the second check valve 25 and an input of the third check valve 27, respectively.
It should be noted that, in this embodiment, the flow path of the refrigerant is as follows: in the cooling mode, the compressor 11 flows in through the first port of the four-way valve 21 and flows out through the second port of the four-way valve 21 to transmit the refrigerant to the condenser 13, the condenser 13 inputs the refrigerant from the first port of the gas-liquid heat exchanger 15 to the gas-liquid heat exchanger 15 through the first check valve 23, the gas-liquid heat exchanger 15 transmits the refrigerant from the second port thereof to the evaporator 19 through the throttling device 17 and the second check valve 25 in order, the evaporator 19 flows in through the fourth port of the four-way valve 21 and flows out through the third port of the four-way valve 21 to flow the refrigerant from the third port of the gas-liquid heat exchanger 15 into the gas-liquid heat exchanger 15, and the gas-liquid heat exchanger 15 returns the refrigerant from the fourth port thereof to the compressor 11 through the gas-liquid separator 31.
In the heating mode, the compressor 11 flows in through the first port of the four-way valve 21 and flows out through the fourth port of the four-way valve 21 to deliver the refrigerant to the evaporator 19, the evaporator 19 further delivers the refrigerant to the gas-liquid heat exchanger 15 through the third check valve 27 from the first port of the gas-liquid heat exchanger 15, the gas-liquid heat exchanger 15 delivers the refrigerant to the condenser 13 from the second port thereof through the throttle device 17 and the fourth check valve 29 in order, the condenser 13 flows in through the second port of the four-way valve 21 and flows out through the third port of the four-way valve 21 to return the refrigerant from the third port of the gas-liquid heat exchanger 15 to the gas-liquid heat exchanger 15, and the gas-liquid heat exchanger 15 further returns the refrigerant to the compressor 11 from the fourth port thereof through the gas-liquid separator 31.
In the provision of each embodiment of the refrigeration system, the refrigeration system can perform heat return treatment on the refrigerant in the refrigeration cycle process and the heating cycle process, and further the performance of the refrigeration system is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A refrigeration system is characterized by comprising a compressor, a condenser, a gas-liquid heat exchanger, a throttling device and an evaporator;
in a refrigeration mode, a refrigerant is output from the compressor, sequentially flows through the condenser, the gas-liquid heat exchanger, the throttling device and the evaporator, flows back to the gas-liquid heat exchanger, and then flows back to the compressor through the gas-liquid heat exchanger;
in the heating mode, the refrigerant is output from the compressor, sequentially flows through the evaporator, the gas-liquid heat exchanger, the throttling device and the condenser, flows back to the gas-liquid heat exchanger, and then flows back to the compressor through the gas-liquid heat exchanger.
2. The refrigerant system as set forth in claim 1, further including a gas-liquid separator;
in a refrigeration mode, a refrigerant is output from the compressor, sequentially flows through the condenser, the gas-liquid heat exchanger, the throttling device and the evaporator, flows back to the gas-liquid heat exchanger, is output by the gas-liquid heat exchanger, flows through the gas-liquid separator and flows back to the compressor;
in the heating mode, the refrigerant is output from the compressor, sequentially flows through the evaporator, the gas-liquid heat exchanger, the throttling device and the condenser, flows back to the gas-liquid heat exchanger, is output by the gas-liquid heat exchanger, flows through the gas-liquid separator and flows back to the compressor.
3. The refrigerant system as set forth in claim 1, further including a four-way valve, a first one-way valve, a second one-way valve, a third one-way valve and a fourth one-way valve;
a first port of the compressor is communicated with a first port of the four-way valve;
a first port of the condenser is communicated with a second port of the four-way valve, and second ports of the condenser are respectively communicated with an input end of the first one-way valve and an output end of the fourth one-way valve;
a first port of the gas-liquid heat exchanger is communicated with an output end of the first one-way valve and an output end of the third one-way valve respectively, a second port of the gas-liquid heat exchanger is communicated with an input end of the second one-way valve and an input end of the fourth one-way valve respectively through the throttling device, a third port of the gas-liquid heat exchanger is communicated with a third port of the four-way valve, and a fourth port of the gas-liquid heat exchanger is communicated with a second port of the compressor;
and a first port of the evaporator is respectively communicated with the output end of the second one-way valve and the input end of the third one-way valve.
4. The refrigeration system of claim 3, further comprising a gas-liquid separator;
and the fourth port of the gas-liquid heat exchanger is communicated with the second port of the compressor through the gas-liquid separator.
5. A refrigeration system as set forth in claim 1 or 3 wherein said liquid-liquid heat exchanger is a liquid-vapor separator with heat exchange tubes.
6. A refrigeration system as set forth in any of claims 1 to 4 wherein said liquid-to-gas heat exchanger is a tube-in-tube heat exchanger, a plate heat exchanger, a shell-and-tube heat exchanger, a coil heat exchanger or a patch heat exchanger.
7. A refrigeration system as claimed in any one of claims 1 to 4, wherein the compressor is a piston compressor, a rotary compressor, a scroll compressor or a screw compressor.
8. A refrigeration system according to any one of claims 1 to 4, wherein the condenser is a water cooled condenser, an air cooled condenser or an evaporative condenser.
9. A refrigeration system as claimed in any one of claims 1 to 4, wherein the evaporator is a flooded evaporator or a dry evaporator.
10. A refrigeration system according to any of claims 1 to 4, wherein the throttling means is a manual expansion valve, a thermostatic expansion valve, an electronic expansion valve or a capillary tube.
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| CN202020681414.6U CN212057820U (en) | 2020-04-28 | 2020-04-28 | Refrigeration system |
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| CN202020681414.6U CN212057820U (en) | 2020-04-28 | 2020-04-28 | Refrigeration system |
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Effective date of registration: 20230407 Address after: Hou He Zhen Da Xin Zhuang Cun, Weihui City, Xinxiang City, Henan Province, 453000 Patentee after: Henan lianghao storage equipment Technology Co.,Ltd. Address before: 511300 b8b, 6th floor, No. 1 (office building), Youyi Yiheng street, Xintang Town, Zengcheng District, Guangzhou City, Guangdong Province Patentee before: Reed (Guangzhou) new energy equipment Co.,Ltd. |