CN211345911U - Refrigerating system and air conditioner - Google Patents
Refrigerating system and air conditioner Download PDFInfo
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- CN211345911U CN211345911U CN201922283367.XU CN201922283367U CN211345911U CN 211345911 U CN211345911 U CN 211345911U CN 201922283367 U CN201922283367 U CN 201922283367U CN 211345911 U CN211345911 U CN 211345911U
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Abstract
The utility model provides a refrigerating system and air conditioner. The refrigeration system comprises a compressor, a condenser, a liquid-gas ejector, a gas-liquid separator, a throttling device, a low-temperature evaporator and a high-temperature evaporator, wherein the inlet of the condenser is communicated with the outlet of the compressor, and the outlet of the condenser is communicated with the inlet of the liquid-gas ejector; the inlet of the gas-liquid separator is communicated with the outlet of the liquid-gas ejector; the inlet of the high-temperature evaporator is connected with the liquid outlet and the gas outlet of the gas-liquid separator, and the outlet of the high-temperature evaporator is communicated with the inlet of the compressor; the inlet of the throttling device is connected with the liquid outlet of the gas-liquid separator, and the outlet of the throttling device is communicated with the inlet of the low-temperature evaporator; the outlet of the low-temperature evaporator is communicated with the injection inlet of the liquid-gas ejector. The utility model discloses a refrigerating system has compromise high efficiency refrigeration and high efficiency dehumidification.
Description
Technical Field
The utility model relates to an air conditioning technology field, in particular to refrigerating system and air conditioner.
Background
Air conditioners are used on the one hand to regulate the temperature of the indoor air and on the other hand to regulate the humidity of the air. For humid and hot climates such as south asia, the middle east, the pacific, africa, and south america, the dehumidifying capability of an air conditioner is very important.
When the air-conditioning refrigeration system operates, water vapor in the indoor air meets the surface of the evaporator and is condensed into liquid water, so that the dehumidification of the indoor environment is realized. It is known that a lower evaporation temperature contributes to an increase in dehumidification capacity. However, to meet human comfort requirements, the evaporating temperature of the refrigeration system cannot be designed to be too low. Moreover, a lower evaporation temperature means a lower evaporation pressure, which also results in a higher energy consumption of the compressor.
Therefore, how to combine the high-efficiency refrigeration and the high-efficiency dehumidification of the air conditioner becomes a technical problem to be solved urgently in the air conditioning industry.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can compromise the refrigerating system of high efficiency refrigeration and high efficiency dehumidification and use its air conditioner.
The utility model discloses a another aim promotes refrigerating system's efficiency.
In one aspect, the present invention provides a refrigeration system comprising a compressor, a condenser, a liquid-gas ejector, a gas-liquid separator, a throttling device, a low temperature evaporator and a high temperature evaporator, wherein an inlet of the condenser is communicated with an outlet of the compressor, and an outlet of the condenser is communicated with an inlet of the liquid-gas ejector; the inlet of the gas-liquid separator is communicated with the outlet of the liquid-gas ejector; the inlet of the high-temperature evaporator is connected with the liquid outlet and the gas outlet of the gas-liquid separator, and the outlet of the high-temperature evaporator is communicated with the inlet of the compressor; the inlet of the throttling device is connected with the liquid outlet of the gas-liquid separator, and the outlet of the throttling device is communicated with the inlet of the low-temperature evaporator; the outlet of the low-temperature evaporator is communicated with the injection inlet of the liquid-gas ejector.
Optionally, the refrigeration system further comprises: and the subcooler is arranged between the outlet of the condenser and the inlet of the liquid-gas ejector and used for cooling the liquid refrigerant flowing out of the condenser so as to subcool the liquid refrigerant.
Optionally, the subcooler utilizes a thermoelectric refrigeration system for refrigeration.
Optionally, the refrigeration system further comprises: and the photovoltaic cell is used for supplying power to the thermoelectric refrigerating system of the subcooler.
Optionally, the refrigeration system further comprises: and the condensed water discharge pipe is used for receiving condensed water condensed on the surfaces of the low-temperature evaporator and the high-temperature evaporator, is sleeved on a liquid outlet pipe connected with an outlet of the condenser, and has a water flow direction opposite to the flow direction of the refrigerant so as to cool the liquid refrigerant discharged by the condenser and supercool the liquid refrigerant.
Optionally, the refrigeration system further comprises: and the spraying device is connected with the outlet of the condensed water discharge pipe and is used for spraying the condensed water onto the surface of the condenser.
Optionally, the refrigeration system further comprises: and the water replenishing pipe is used for connecting a water source, is communicated with the spraying device and is used for replenishing water to the spraying device.
Optionally, a liquid flow regulating valve for regulating flow is arranged on a flow path between the liquid outlet of the gas-liquid separator and the inlet of the high-temperature evaporator; and a gas flow regulating valve for regulating the flow is arranged on a flow path between the gas outlet of the gas-liquid separator and the inlet of the high-temperature evaporator.
Optionally, the refrigerant used in the refrigeration system is R290.
On the other hand, the utility model also provides an air conditioner, it includes as above any one the refrigerating system.
The utility model discloses a refrigerating system utilizes including two refrigeration cycle of high evaporating temperature circulation and low evaporating temperature circulation, has realized the independent control of indoor refrigeration and dehumidification. The high evaporating temperature cycle has relatively high evaporating temperature, so that the compressor has relatively low compression ratio and low power consumption. Because the circulating evaporation temperature of the low evaporation temperature is lower, the cooling of water vapor in the air is more facilitated, and the dehumidification capacity is stronger. Based on this, the utility model discloses high efficiency refrigeration and high efficiency dehumidification have concurrently. Moreover, the refrigerating system is very simple, is easy to miniaturize and integrate, and can be adopted by household and commercial air conditioners.
Further, the utility model discloses a liquid-gas ejector among the refrigerating system can not only carry out the throttle decompression to high-pressure liquid refrigerant, has still penetrated the gaseous state refrigerant of low temperature evaporator export, provides circulation power for the low evaporation temperature circulation, has reduced the consumption of compressor.
Further, the refrigeration system of the present invention utilizes a thermoelectric subcooler to subcool the refrigerant at the outlet of the condenser. The thermoelectric refrigerating system has stronger refrigerating capacity, so that the supercooling degree of the refrigerant is larger, the refrigerating capacity is improved more, and the energy efficiency is improved obviously. And moreover, the photovoltaic cell supplies power to the subcooler, so that the energy is saved.
Further, the utility model discloses a refrigerating system sets up a comdenstion water discharge pipe very much, makes its cover on the drain pipe that the export of condenser is connected, and rivers flow direction and refrigerant flow direction are opposite, carries out the subcooling to condenser exhaust liquid refrigerant, has promoted the refrigerating output. And moreover, the condensed water is finally sprayed onto the condenser, so that the heat exchange efficiency of the condenser is improved. It can be seen that the utility model discloses cold volume to the comdenstion water has carried out very abundant and perfect utilization.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a cycle diagram of a refrigeration system according to an embodiment of the present invention;
fig. 2 is a schematic view of a partial structure of a refrigeration system according to an embodiment of the present invention.
Detailed Description
A refrigeration system and an air conditioner according to an embodiment of the present invention will be described with reference to fig. 1 and 2. Fig. 1 is a cycle diagram of a refrigeration system according to an embodiment of the present invention.
As shown in fig. 1, a refrigeration system of an embodiment of the present invention may generally include a compressor 100, a condenser 200, a liquid-gas ejector 400, a gas-liquid separator 500, a throttling device 600, a low temperature evaporator 700, and a high temperature evaporator 800.
The inlet of the condenser 200 communicates with the outlet of the compressor 100, and the outlet of the condenser 200 communicates with the inlet of the liquid-gas ejector 400. The inlet of the gas-liquid separator 500 communicates with the outlet of the liquid-gas ejector 400. The inlet of the high temperature evaporator 800 is connected to the outlet and the gas outlet of the gas-liquid separator 500, and the outlet is connected to the inlet of the compressor 100. The inlet of the throttling device 600 is connected with the liquid outlet of the gas-liquid separator 500, and the outlet of the throttling device 600 is connected with the inlet of the low-temperature evaporator 700. The outlet of the low temperature evaporator 700 is connected to the injection inlet of the liquid-gas injector 400.
The refrigerant cycle of the refrigeration system is described below with reference to fig. 1. The solid arrows in fig. 1 indicate the direction of the refrigerant flow.
The high-temperature and high-pressure gas refrigerant is discharged from the compressor 100 and then enters the condenser 200. Under the action of the fan 210, the condenser 200 performs forced convection heat exchange with air, so that the gaseous refrigerant therein is cooled and condensed into a high-pressure liquid refrigerant. High pressure liquid refrigerant enters the inlet of the liquid-gas ejector 400. The liquid-gas ejector 400 performs temperature reduction and pressure reduction on the high-pressure liquid refrigerant, ejects the low-pressure gaseous refrigerant from the low-temperature evaporator 700, finally forms a medium-pressure gas-liquid two-phase refrigerant, and discharges the medium-pressure gas-liquid two-phase refrigerant into the gas-liquid separator 500. The gas-liquid separator 500 is used for gas-liquid separation of the gas-liquid two-phase refrigerant, and has a liquid outlet and a gas outlet.
The liquid refrigerant flowing out of the liquid outlet of the gas-liquid separator 500 is divided into two paths, wherein one path is mixed with the gaseous refrigerant flowing out of the gas outlet thereof (for example, mixed by a gas-liquid mixer 530), and then flows to the high-temperature evaporator 800, and is subjected to heat absorption and evaporation in the high-temperature evaporator 800 to form the gaseous refrigerant, and then is sucked by the compressor 100. In this way, the cycle in which the refrigerant passes through the compressor 100, the condenser 200, the liquid-gas ejector 400, the gas-liquid separator 500, and the high-temperature evaporator 800 in this order and then returns to the compressor 100 constitutes a high evaporation temperature cycle of the refrigeration system, mainly for cooling the indoor air.
The other path of the liquid refrigerant flowing out of the liquid outlet of the gas-liquid separator 500 flows into a throttling device 600 (e.g., an electronic expansion valve), and after being subjected to temperature reduction and pressure reduction, the liquid refrigerant enters the low-temperature evaporator 700, undergoes heat absorption and evaporation in the high-temperature evaporator 800 to form a gaseous refrigerant, and then enters the injection inlet of the liquid-gas ejector 400. Compared with the gas-liquid two-phase refrigerant entering the high-temperature evaporator 800, the refrigerant entering the low-temperature evaporator 700 further passes through the throttle device 600, so that the temperature and the pressure of the refrigerant are further reduced, and the evaporation temperature of the refrigerant is lower. Thus, the cycle in which the refrigerant passes through the liquid-gas ejector 400, the gas-liquid separator 500, the throttle device 600, and the low-temperature evaporator 700 in this order and then returns to the liquid-gas ejector 400 constitutes a low evaporation temperature cycle of the refrigeration system, and is mainly used for dehumidifying indoor air.
The utility model discloses refrigerating system utilizes liquid-gas ejector 400 not only to realize the throttle step-down effect to the liquid refrigerant of high pressure, has still drawn the gaseous state refrigerant of having penetrated the export of low temperature evaporator 700, provides power for the low evaporating temperature circulation, has reduced compressor 100's consumption. Also, since the high temperature evaporator 800 is mainly used to cool the indoor air, the evaporation temperature thereof may be designed to be higher, even higher than the dew point temperature of the air. This results in a higher suction pressure of the compressor 100, a lower compression ratio of the compressor 100, and a substantial reduction in power consumption of the compressor 100.
In the embodiment of the present invention, the evaporating temperature of the low temperature evaporator 700 is lower, and the dehumidifying capability is very strong. For example, when it is required to dehumidify the indoor air, the fan 710 is used to pre-cool the indoor airflow passing through the high temperature evaporator 800, and then further cool and dehumidify the indoor airflow passing through the low temperature evaporator 700.
The refrigerant adopted by the refrigeration system is R290, so that the energy efficiency of the refrigeration system is improved.
In some embodiments, as shown in fig. 1, a gas flow rate adjusting valve 510 for adjusting a flow rate may be provided on a flow path between the gas outlet of the gas-liquid separator 500 and the inlet of the high temperature evaporator 800. A liquid flow rate adjusting valve 520 for adjusting the flow rate is provided in the flow path between the liquid outlet of the gas-liquid separator 500 and the inlet of the high temperature evaporator 800. As such, the ratio of the gaseous refrigerant and the liquid refrigerant entering the high temperature evaporator 800 is made adjustable so as to adjust the evaporation temperature of the high temperature evaporator 800. In this way, for example, the evaporation temperature is adjusted above the dew point temperature of the air.
Fig. 2 is a schematic view of a partial structure of a refrigeration system according to an embodiment of the present invention.
In some embodiments, as shown in fig. 1 and 2, the refrigeration system further includes a subcooler 300. The subcooler 300 is disposed between the outlet of the condenser 200 and the inlet of the liquid-gas ejector 400, and is configured to cool the liquid refrigerant flowing out of the condenser 200 to a temperature lower than the condensing temperature, thereby implementing subcooling and increasing the cooling capacity of the refrigeration system, so as to further increase the energy efficiency of the refrigeration system.
The subcooler 300 may utilize a thermoelectric refrigeration system for refrigeration. The thermoelectric refrigerating system comprises a cold end and a hot end, the cold end can generate cold energy after being electrified, and the liquid refrigerant is supercooled and cooled by utilizing the cold energy. The specific principles and construction of thermoelectric refrigeration systems are well known to those skilled in the art and will not be described in detail herein.
Further, the refrigeration system further includes a photovoltaic cell 50 for powering the thermoelectric refrigeration system of the subcooler 300. For example, when the refrigeration system is applied to a split type air conditioner, the photovoltaic cell 50 may be placed on the casing of the outdoor unit 10. In addition, the photovoltaic cell 50 can also supply power to other power consumption components of the refrigeration system, such as a fan, various valves, an electric control component, and the like, so as to further save energy consumption and improve energy efficiency of the refrigeration system.
In some embodiments, as shown in FIG. 2, the refrigeration system further includes a condensate drain 30. The condensed water discharge pipe 30 is used for receiving condensed water condensed on the surfaces of the low temperature evaporator 700 and the high temperature evaporator 800. The condensed water discharge pipe 30 is sleeved on a drain pipe connected to an outlet of the condenser 200 (in other words, the drain pipe penetrates through the condensed water discharge pipe 30, so that the condensed water is in an annular space between the drain pipe and the condensed water discharge pipe), and the flow direction of the water flow is opposite to the flow direction of the refrigerant, so as to cool the liquid refrigerant discharged from the condenser 200 and perform supercooling. The water flow direction is indicated by hollow arrows and the refrigerant flow direction is indicated by solid arrows in fig. 2.
Further, the refrigeration system also includes a spray device 40. The spraying device 40 is connected to the outlet of the condensed water discharge pipe 30 for spraying the condensed water onto the surface of the condenser 200 to cool the condenser 200 with the water, thereby improving the heat exchange efficiency of the condenser 200. Based on this, the embodiment of the utility model provides a cold volume to the comdenstion water has carried out very abundant and perfect utilization. In addition, a water replenishing pipe 42 can be further arranged, wherein the water replenishing pipe 42 is used for being connected with a water source and is communicated with the spraying device 40 for replenishing water for the spraying device 40. Thus, even if the condensed water is insufficient, the condenser 200 can be spray-cooled by the external water source.
The embodiment of the utility model provides an on the other hand still provides an air conditioner. The air conditioner comprises the refrigeration system of any one of the above embodiments.
For example, in fig. 2, the air conditioner may be a split type air conditioner, which includes an indoor unit 20 and an outdoor unit 10. The compressor 100 and the condenser 200 constitute a part of the outdoor unit 10, and the high temperature evaporator 800, the low temperature evaporator 700, the liquid-gas ejector 400, and the throttle device 600 constitute a part of the indoor unit 20.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A refrigeration system is characterized by comprising a compressor, a condenser, a liquid-gas ejector, a gas-liquid separator, a throttling device, a low-temperature evaporator and a high-temperature evaporator, wherein
The inlet of the condenser is communicated with the outlet of the compressor, and the outlet of the condenser is communicated with the inlet of the liquid-gas ejector;
the inlet of the gas-liquid separator is communicated with the outlet of the liquid-gas ejector;
the inlet of the high-temperature evaporator is communicated with the liquid outlet and the gas outlet of the gas-liquid separator, and the outlet of the high-temperature evaporator is communicated with the inlet of the compressor;
the inlet of the throttling device is communicated with the liquid outlet of the gas-liquid separator, and the outlet of the throttling device is communicated with the inlet of the low-temperature evaporator;
and the outlet of the low-temperature evaporator is communicated with the injection inlet of the liquid-gas ejector.
2. The refrigeration system of claim 1, further comprising:
and the subcooler is arranged between the outlet of the condenser and the inlet of the liquid-gas ejector and is used for cooling the liquid refrigerant flowing out of the condenser so as to subcool the liquid refrigerant.
3. The refrigerant system as set forth in claim 2,
the subcooler utilizes a thermoelectric refrigeration system to perform refrigeration.
4. The refrigeration system of claim 3, further comprising:
and the photovoltaic cell is used for supplying power to the thermoelectric refrigerating system of the subcooler.
5. The refrigeration system of claim 1, further comprising:
a condensed water discharge pipe for receiving condensed water condensed on the surfaces of the low-temperature evaporator and the high-temperature evaporator,
the condensed water discharge pipe is sleeved on a liquid outlet pipe connected with an outlet of the condenser, and the flow direction of water flow is opposite to that of the refrigerant, so that the liquid refrigerant discharged by the condenser is cooled and subcooled.
6. The refrigeration system of claim 5, further comprising:
and the spraying device is connected with the outlet of the condensed water discharge pipe and is used for spraying the condensed water onto the surface of the condenser.
7. The refrigeration system of claim 6, further comprising:
and the water replenishing pipe is used for connecting a water source, is communicated with the spraying device and is used for replenishing water to the spraying device.
8. The refrigerant system as set forth in claim 1,
a liquid flow regulating valve for regulating flow is arranged on a flow path between the liquid outlet of the gas-liquid separator and the inlet of the high-temperature evaporator;
and a gas flow regulating valve for regulating the flow is arranged on a flow path between the gas outlet of the gas-liquid separator and the inlet of the high-temperature evaporator.
9. The refrigerant system as set forth in claim 1,
the refrigerant adopted by the refrigeration system is R290.
10. An air conditioner characterized by comprising the refrigeration system as recited in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922283367.XU CN211345911U (en) | 2019-12-18 | 2019-12-18 | Refrigerating system and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922283367.XU CN211345911U (en) | 2019-12-18 | 2019-12-18 | Refrigerating system and air conditioner |
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| CN211345911U true CN211345911U (en) | 2020-08-25 |
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| CN201922283367.XU Active CN211345911U (en) | 2019-12-18 | 2019-12-18 | Refrigerating system and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183942A (en) * | 2021-12-10 | 2022-03-15 | 珠海格力电器股份有限公司 | Heat exchange system |
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2019
- 2019-12-18 CN CN201922283367.XU patent/CN211345911U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183942A (en) * | 2021-12-10 | 2022-03-15 | 珠海格力电器股份有限公司 | Heat exchange system |
| CN114183942B (en) * | 2021-12-10 | 2023-01-10 | 珠海格力电器股份有限公司 | Heat exchange system |
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