Refrigerating system and refrigerator

Abstract

The utility model relates to the technical field of refrigerators, particularly provides a refrigerating system and a refrigerator, and aims to solve the problem that the cost is greatly increased while the energy consumption of a compressor of an existing refrigerator is reduced. In order to achieve the purpose, the refrigerating system comprises a compressor and a condenser which communicate with each other, the refrigerating system further comprises a first nozzle, a gas-liquid separator and a first evaporator, the first nozzle comprises a first inlet, a first suck-back opening and a first outlet, and the gas-liquid separator comprises a refrigerant inlet end, a gas outlet end and a liquid outlet end; the first inlet is communicated with the condenser, the first suck-back port is communicated with a refrigerant outlet of the first evaporator, the first outlet is communicated with the refrigerant inlet end, the gas outlet end is communicated with the compressor, and the liquid outlet end is communicated with the refrigerant inlet of the first evaporator through a first throttling element; and the first inverse suction port can suck a refrigerant of the first evaporator into the first nozzle. The first nozzle can improve the suction pressure of the compressor to achieve the purpose of reducing power consumption.

Description

Technical Field

[0001] The present application relates to the technical field of refrigerators, and specifically provides a refrigeration system and a refrigerator. Background Art

[0002] With the development of the economy, various types of refrigerators have entered thousands of households. While refrigerators meet people's needs for storing food, they also consume a lot of electricity. Replacing compressors and optimizing logic programs greatly increase the production cost of refrigerators. Summary of the Invention

[0003] The present application aims to solve the above technical problem, that is, to solve the problem that the cost of existing refrigerators is greatly increased while reducing the energy consumption of the compressor.

[0004] The present application provides a refrigeration system, including a compressor and a condenser connected to each other, and the refrigeration system also includes a first nozzle, a gas-liquid separator, a first throttling member and a first evaporator connected to each other, the first nozzle including a first inlet, a first back suction port and a first outlet, the gas-liquid separator including a refrigerant inlet end, a gas outlet end and a liquid outlet end, the first inlet is connected to the condenser, the first back suction port is connected to the refrigerant outlet of the first evaporator, the first outlet is connected to the refrigerant inlet end, the gas outlet end is connected to the compressor, and the liquid outlet end is connected to the refrigerant inlet of the first evaporator through the first throttling member. When the refrigerant flows into the first inlet, the first back suction port can suck the refrigerant of the first evaporator into the first nozzle.

[0005] In an optional technical solution of the above-mentioned refrigeration system, the refrigeration system also includes a control valve, a second evaporator and a second throttling device, the control valve is connected to the condenser, the control valve includes a first passage and a second passage, the control valve can control the first passage and the second passage to be opened or closed, the first passage is connected to the first inlet, the second passage is connected to the refrigerant inlet of the second evaporator through the second throttling device, and the refrigerant outlet of the second evaporator is connected to the refrigerant inlet of the first evaporator.

[0006] In the optional technical solution of the above-mentioned refrigeration system, it also includes a second nozzle, which includes a second inlet, a second outlet and a second back suction port. The second inlet is connected to the second passage, the second outlet is connected to the refrigerant inlet of the first evaporator, and the second back suction port is connected to the refrigerant outlet of the second evaporator. When the refrigerant flows into the second inlet, the second back suction port can suck the refrigerant of the second evaporator into the second nozzle.

[0007] In an optional technical solution of the above refrigeration system, a third throttling member is further included, and the third throttling member connects the second outlet and the refrigerant inlet of the second evaporator.

[0008] In an optional technical solution of the above refrigeration system, the first throttling member, the second throttling member and the third throttling member are all configured as capillary tubes.

[0009] In an optional technical solution of the above refrigeration system, a drying filter is further included, and the drying filter is connected to the condenser and the control valve.

[0010] In an optional technical solution of the above refrigeration system, a dew removal pipe is further included, and the dew removal pipe connects the drying filter and the condenser.

[0011] In an optional technical solution of the above refrigeration system, the first evaporator is a freezing evaporator, and the second evaporator is a refrigeration evaporator.

[0012] In an optional technical solution of the above refrigeration system, the first passage is also connected to the refrigerant inlet of the first evaporator, and a fourth throttling member is provided between the first passage and the first evaporator.

[0013] The present application also provides a refrigerator, which includes a refrigeration system according to any one of the above technical solutions.

[0014] The mixed refrigerant flowing out from the first outlet of the first nozzle is decelerated and pressurized by the first nozzle, and then the gaseous refrigerant separated by the gas-liquid separator flows into the compressor, which can increase the suction pressure of the compressor and reduce the compression ratio of the compressor, thereby achieving the purpose of reducing power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] BRIEF DESCRIPTION OF THE DRAWINGS The drawings constituting a part of the present application are used to provide a further understanding of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] The preferred embodiments of the present application are described below with reference to the accompanying drawings, in which:

[0018] Figure 1 is a schematic diagram of the refrigeration system of the present application;

[0019] Figure 2 This is a schematic diagram of the operation of the refrigeration system of the present application in a freezing state;

[0020] Figure 3 This is a schematic diagram of the operation of the refrigeration system of the present application in the refrigeration state.

[0021] List of reference numerals:

[0022] 1. Refrigeration system; 11. Compressor; 12. Condenser; 131. First evaporator; 131a. Refrigerant inlet of the first evaporator; 131b. Refrigerant outlet of the first evaporator; 132. Second evaporator; 132a. Refrigerant inlet of the second evaporator; 132b. Refrigerant outlet of the second evaporator; 141. First nozzle; 1411. First inlet; 1412. First back suction port; 1413. First outlet; 142. Second nozzle; 1421. Second inlet; 1422. Second back suction port; 1423. Second outlet; 151. First throttling element; 152. Second throttling element; 16. Gas-liquid separator; 161. Refrigerant inlet port; 162. Gas outlet port; 163. Liquid outlet port; 17. Control valve; 171. First channel; 172. Second channel; 18. Dry filter; 19. De-contamination pipe. DETAILED DESCRIPTION

[0023] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. In the following description, unless otherwise indicated, identical numerals in different figures represent identical or similar elements. The terms "first," "second," "third," and similar terms used in this specification and claims do not denote any order, quantity, or importance, but are used solely to distinguish between different components.

[0024] When an element is considered "connected" to another element, it can be directly connected to the other element or with an intervening element. "Connected" or "connected" should be understood broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can also be internal communication between two elements. Those skilled in the art will understand the specific meaning of these terms in this application based on the specific circumstances.

[0025] The present application also provides a refrigerator (not shown in the figure), which has a refrigeration system 1. The refrigeration system 1 can reduce the energy consumption of the compressor 11, reduce the compression ratio, and reduce the power of the compressor 11, thereby achieving the effect of energy saving and consumption reduction.

[0026] Of course, the refrigeration system 1 of the present application can be applied to other refrigeration devices besides refrigerators, such as freezers. For the convenience of introduction, the following description will take the refrigeration system 1 being set in a refrigerator as an example.

[0027] like Figure 1 As shown, a refrigeration system 1 of the present application includes a compressor 11 and a condenser 12 that are interconnected. The refrigeration system 1 also includes a first nozzle 141, a gas-liquid separator 16, a first throttling member 151 and a first evaporator 131 that are interconnected. The first nozzle 141 includes a first inlet 1411, a first back suction port 1412 and a first outlet 1413. The gas-liquid separator 16 includes a refrigerant inlet end 161, a gas outlet end 162 and a liquid outlet end 163. The first inlet 1411 is connected to the condenser 12. The condenser 12 is connected, the first back suction port 1412 is connected to the refrigerant outlet 131b of the first evaporator 131, the first outlet 1413 is connected to the refrigerant inlet end 161, the gas outlet end 162 is connected to the compressor 11, and the liquid outlet end 163 is connected to the refrigerant inlet 131a of the first evaporator 131 through the first throttling member 151. When the refrigerant flows into the first inlet 1411, the first back suction port 1412 can suck the refrigerant of the first evaporator 131 into the first nozzle 141.

[0028] The working principle of refrigeration system 1 is as follows Figure 2As shown, the compressor 11 can pressurize the gaseous refrigerant, and the pressurized gaseous refrigerant flows into the condenser 12 and forms a high-pressure liquid refrigerant after heat exchange through the condenser 12. The high-pressure liquid refrigerant flows from the first inlet 1411 of the first nozzle 141 to the first nozzle 141, and gradually accelerates and reduces the pressure in the first nozzle 141, thereby gradually forming a negative pressure in the first nozzle 141. Under the action of the negative pressure, the first nozzle 141 sucks the refrigerant in the first evaporator 131 through the first back suction port 1412, thereby mixing the refrigerant from the first evaporator 131 with the refrigerant in the first nozzle 141. During the mixing process, the refrigerant gradually slows down and increases in pressure, and the mixed refrigerant passes through the first outlet 1413 flows into the gas-liquid separator 16 from the refrigerant inlet end 161 of the gas-liquid separator 16. After gas-liquid separation, the liquid refrigerant flows out from the liquid outlet end 163 and flows into the first evaporator 131 after throttling and reducing the pressure through the first throttling member 151, so that the liquid refrigerant continues to absorb heat and exchanges heat in the first evaporator 131 to become a gaseous refrigerant. The gaseous refrigerant continues to be sucked back by the first nozzle 141 and mixed in the first nozzle 141, while the gaseous refrigerant in the gas-liquid separator 16 flows from the gas outlet end 162 to the compressor 11, and is compressed by the compressor 11 into a high-pressure gaseous refrigerant and flows to the condenser 12. This cycle is repeated, thereby realizing continuous cooling of the first refrigeration system 1. Since the mixed refrigerant flowing out from the first outlet 1413 of the first nozzle 141 is decelerated and pressurized after passing through the first nozzle 141, the pressure of the gaseous refrigerant is increased. As a result, when the gaseous refrigerant separated by the gas-liquid separator 16 flows into the compressor 11, the suction pressure of the compressor 11 is increased, thereby reducing the compression ratio of the compressor 11 and achieving the purpose of reducing power consumption.

[0029] In one embodiment, if Figure 1-Figure 3 As shown, the refrigeration system 1 also includes a control valve 17, a second evaporator 132 and a second throttling member 152. The control valve 17 is connected to the condenser 12. The control valve 17 includes a first passage and a second passage. The control valve 17 can control the first passage and the second passage to be opened or closed. The first passage is connected to the first inlet 1411, and the second passage is connected to the refrigerant inlet 132a of the second evaporator 132 through the second throttling member 152. The refrigerant outlet 132b of the second evaporator 132 is connected to the refrigerant inlet 131a of the first evaporator 131.

[0030] The control valve 17 can control the opening and closing of the first passage and the second passage. Since the internal structure of the control valve 17 is not shown, the first passage and the second passage are shown in FIG. Figure 1-Figure 3 The first channel 171 is connected to the second channel Figure 1-Figure 3The control valve 17 is connected to the second passage 172. When the first passage is open, the refrigerant can flow through the first passage and into the first passage 171 and then into the first nozzle 141. When the second passage is open, the refrigerant flows through the second passage and the second passage 172 into the second evaporator 132. By controlling the opening and closing of the first and second passages by the control valve 17, the refrigeration system 1 can be controlled to perform different operating modes.

[0031] In one embodiment, the first evaporator 131 is a freezing evaporator, and the second evaporator 132 is a refrigeration evaporator. The refrigerator can be controlled to perform refrigeration and freezing operations separately.

[0032] like Figure 2 As shown, when the refrigerator is only in freezing operation, the control valve 17 controls the first passage to be open and the second passage to be closed. The working process at this time is the same as the working process of the above-mentioned case where only one first evaporator 131 is provided, and no further description is given here. When the refrigerator is in freezing operation, the first nozzle 141 can increase the suction pressure of the compressor 11 and reduce the compression ratio of the compressor 11, thereby achieving the purpose of reducing power consumption.

[0033] like Figure 3 As shown, when the refrigerator is in refrigeration mode, the control valve 17 controls the first passage to be closed and the second passage to be opened. At this time, the high-pressure liquid refrigerant flowing out of the condenser 12 flows from the second passage to the second channel 172, and after being throttled and reduced in pressure by the second throttle member 152, enters the second evaporator 132 for heat exchange. The gaseous refrigerant flowing out of the second evaporator 132 continues to flow into the first evaporator 131 for heat exchange. After heat exchange in the first evaporator 131, the refrigerant flows into the first nozzle 141 through the first suction port 1412 of the first nozzle 141 and flows into the gas-liquid separator 16 through the first outlet 1413. The liquid refrigerant separated from the gas-liquid separator 16 continues to flow back to the first evaporator 131, and the separated gaseous refrigerant flows into the compressor 11 from the gas outlet port 162. This cycle continues, achieving refrigeration of the refrigerator. The second evaporator 132 is provided to achieve dual-system operation of the refrigerator, and the first nozzle 141 can also achieve energy saving and consumption reduction of the dual-system refrigerator.

[0034] In one embodiment, if Figure 1-Figure 3 As shown, the refrigeration system 1 also includes a second nozzle 142, the second nozzle 142 includes a second inlet 1421, a second outlet 1423 and a second back suction port 1422, the second inlet 1421 is connected to the second passage, the second outlet 1423 is connected to the refrigerant inlet 131a of the first evaporator 131, and the second back suction port 1422 is connected to the refrigerant outlet 132b of the second evaporator 132. When the refrigerant flows into the second inlet 1421, the second back suction port 1422 can suck the refrigerant of the second evaporator 132 into the second nozzle 142.

[0035] In order to further increase the suction pressure of the compressor 11 and reduce the compression ratio of the compressor 11, a second nozzle 142 can be added to the refrigeration system 1. The second nozzle 142 only works during the refrigeration operation of the refrigerator. The following is a refrigeration process after the second nozzle 142 is installed. Figure 3 As shown in: the control valve 17 controls the first passage to be closed and the second passage to be opened. At this time, the high-pressure liquid refrigerant flowing out of the condenser 12 flows from the second passage to the second channel 172. A part of the refrigerant flowing into the second channel 172 is throttled and depressurized by the second throttling member 152 and then enters the second evaporator 132 for heat exchange. The other part flows into the second nozzle 142 from the second inlet 1421. The refrigerant flowing into the second nozzle 142 forms a negative pressure in the second nozzle 142 after accelerated pressure reduction, so that the second nozzle 142 sucks the refrigerant in the second evaporator 132 into the second nozzle 142 through the second back suction port 1422 under the negative pressure. The refrigerant sucked back into the second nozzle 142 in the second evaporator 132 is mixed with the refrigerant flowing into the second nozzle 142 through the second channel 172. During the mixing process, the refrigerant gradually slows down and increases in pressure and flows from the second outlet 1423 to the first evaporator 131 for heat exchange. After heat exchange in the first evaporator 131, the refrigerant flows into the first nozzle 141 from the first back suction port 1412 of the first nozzle 141 and flows into the gas-liquid separator 16 through the first outlet 1413. The liquid refrigerant separated from the gas-liquid separator 16 continues to flow back to the first evaporator 131, and the separated gaseous refrigerant flows into the compressor 11 from the gas outlet end 162, and the cycle continues. During the refrigeration process, the setting of the second nozzle 142 can slow down and increase the refrigerant before flowing into the first evaporator 131, thereby increasing the suction pressure of the compressor 11 to a certain extent, thereby reducing the compression ratio of the compressor 11, and also achieving the purpose of reducing power consumption.

[0036] It should be noted that the refrigerator can also perform freezing and refrigeration at the same time. In this case, the above-mentioned refrigeration work and freezing work are carried out at the same time. Under normal circumstances, the refrigeration work and freezing work of the refrigerator are carried out separately.

[0037] In one embodiment, the refrigeration system 1 further includes a third throttle member, which connects the second outlet 1423 with the refrigerant inlet 132a of the second evaporator 132. Since the refrigerant entering the first evaporator 131 and the second evaporator 132 needs to be a low-pressure refrigerant, the third throttle member is provided between the second nozzle 142 and the second evaporator 132. At this time, the refrigerant flowing out of the second outlet 1423 of the second nozzle 142 is throttled and reduced in pressure by the third throttle member to become a low-pressure refrigerant.

[0038] In one embodiment, the first throttle member 151, the second throttle member 152 and the third throttle member are all configured as capillaries. Capillaries as throttle members have simple structures, are easy to repair, operate safely and reliably, and have stable throttling.

[0039] In one embodiment, if Figure 1-Figure 3 As shown, the refrigeration system 1 further includes a filter dryer 18, which is connected to the condenser 12 and the control valve 17. The filter dryer 18 can collect solid impurities in the refrigeration system 1 and prevent the impurities from entering the first throttle member 151, the second throttle member 152, or the third throttle member, thereby avoiding clogging of the first throttle member 151, the second throttle member 152, or the third throttle member.

[0040] In one embodiment, if Figure 1-Figure 3 As shown, the refrigeration system 1 further includes a dew removing pipe 19, which connects the drying filter 18 and the condenser 12. The dew removing pipe 19 is used to increase the temperature of the refrigerator door frame to prevent water vapor in the air outside the cabinet from condensing into dew when it encounters cold at the door frame.

[0041] In one embodiment, the first passage is also connected to the refrigerant inlet 131a of the first evaporator 131, and a fourth throttling member is provided between the first passage and the first evaporator 131. When the first passage is connected to the refrigerant inlet 131a of the first evaporator 131, it only affects the freezing operation of the refrigerator. When the refrigerator is freezing, the control valve 17 controls the first passage to be open and the second passage to be closed. At this time, the refrigerant flowing from the condenser 12 through the first passage flows to the first channel 171. A part of the refrigerant flowing into the first channel 171 enters the first nozzle 141 through the first inlet 1411, and the other part flows directly into the first evaporator 131 for heat exchange. The refrigerant flowing into the first nozzle 141 passes through the first inlet 1411. After accelerating the pressure reduction, a negative pressure is formed in the first nozzle 141, and the refrigerant in the first evaporator 131 is sucked back. The refrigerant sucked back from the first evaporator 131 into the first nozzle 141 is mixed with the refrigerant flowing into the first nozzle 141 through the first channel 171, and gradually decelerates and increases in pressure, and flows from the first outlet 1413 into the gas-liquid separator 16. The liquid refrigerant separated from the gas-liquid separator 16 continues to flow back to the first evaporator 131, and the separated gaseous refrigerant flows into the compressor 11 from the gas outlet end 162, and the cycle continues. By connecting the first passage with the refrigerant inlet 131a of the first evaporator 131, the suction pressure of the compressor 11 can also be increased, achieving the purpose of energy saving and consumption reduction. In addition, the refrigerant flowing out of the condenser 12 can enter the first evaporator 131 and the first nozzle 141 at the same time and work simultaneously, thereby improving work efficiency.

[0042] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A refrigeration system, characterized in that: The refrigeration system includes a compressor and a condenser that are interconnected. The refrigeration system also includes a first nozzle, a gas-liquid separator, a first throttling device and a first evaporator that are interconnected. The first nozzle includes a first inlet, a first back suction port and a first outlet. The gas-liquid separator includes a refrigerant inlet end, a gas outlet end and a liquid outlet end. The first inlet is connected to the condenser, the first back suction port is connected to the refrigerant outlet of the first evaporator, the first outlet is connected to the refrigerant inlet end, the gas outlet end is connected to the compressor, and the liquid outlet end is connected to the refrigerant inlet of the first evaporator through the first throttling device. When the refrigerant flows into the first inlet, the first back suction port can suck the refrigerant of the first evaporator into the first nozzle.

2. The refrigeration system according to claim 1, characterized in that The refrigeration system also includes a control valve, a second evaporator and a second throttling device. The control valve is connected to the condenser. The control valve includes a first passage and a second passage. The control valve can control the first passage and the second passage to be opened or closed. The first passage is connected to the first inlet, and the second passage is connected to the refrigerant inlet of the second evaporator through the second throttling device. The refrigerant outlet of the second evaporator is connected to the refrigerant inlet of the first evaporator.

3. The refrigeration system according to claim 2, characterized in that It also includes a second nozzle, which includes a second inlet, a second outlet and a second back suction port. The second inlet is connected to the second passage, the second outlet is connected to the refrigerant inlet of the first evaporator, and the second back suction port is connected to the refrigerant outlet of the second evaporator. When the refrigerant flows into the second inlet, the second back suction port can suck the refrigerant of the second evaporator into the second nozzle.

4. The refrigeration system according to claim 3, characterized in that It also includes a third throttling member, which connects the second outlet and the refrigerant inlet of the second evaporator.

5. The refrigeration system according to claim 4, characterized in that The first throttling member, the second throttling member and the third throttling member are all configured as capillaries.

6. The refrigeration system according to any one of claims 2 to 5, characterized in that: A drying filter is also included, wherein the drying filter is connected between the condenser and the control valve.

7. The refrigeration system according to claim 6, characterized in that It also includes a dew removal pipe, which connects the drying filter and the condenser.

8. The refrigeration system according to any one of claims 2 to 5, characterized in that: The first evaporator is a freezing evaporator, and the second evaporator is a refrigeration evaporator.

9. The refrigeration system according to any one of claims 2 to 5, characterized in that: The first passage is also communicated with the refrigerant inlet of the first evaporator, and a fourth throttling element is provided between the first passage and the first evaporator.

10. A refrigerator, characterized in that: The refrigerator comprises the refrigeration system according to any one of claims 1 to 9.

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