A jet compression refrigeration system for oil removal cleaning machine

Abstract

The present invention provides an injection compression refrigeration system for an oil removal cleaning machine, which belongs to the field of refrigeration technology and solves the problem of low heat utilization rate in existing refrigeration systems. The present invention includes an oil removal cleaning machine, an evaporator, a compressor, a condenser, and a generator. A first heat exchange circuit is provided between the oil removal cleaning machine and the evaporator. A heating device is provided between the generator and the oil removal cleaning machine, which can heat the refrigerant in the generator and the solvent in the oil removal cleaning machine respectively. A second heat exchange circuit is provided between the heating device and the oil removal cleaning machine. A third heat exchange circuit is provided between the generator and the heating device. The compressor is arranged between the evaporator and the condenser and is in communication with both. A gas-liquid separator is provided between the evaporator and the condenser. The condenser is in communication with the gas-liquid separator and the generator respectively. An ejector is provided between the generator and the condenser, which is in communication with both. The ejector can pass fluid from the generator and the gas-liquid separator into the condenser.

Description

Technical Field

[0001] The present invention belongs to the technical field of refrigeration systems, and in particular relates to a jet compression refrigeration system of an oil removal cleaning machine. Background Art

[0002] In industrial production, the total energy consumption is large, and some of the waste heat is directly transferred to the atmosphere, resulting in energy waste and even exacerbating the urban heat island effect in summer.

[0003] Heat treatment degreasing cleaning machines use electricity to heat hot water, which then heats the solvent to clean machined parts, and this process repeats itself. Because the temperature of the heated solvent must be above 100°C, the circulating water pressure is greater than atmospheric pressure and the water temperature is also above 100°C. This waste heat can be converted into cooling energy through a jet refrigeration system and used to cool the machined parts. Jet refrigeration systems are driven by low-grade thermal energy, such as waste heat, and are attracting attention for their simple structure, few moving parts, low operating and maintenance costs, and long service life. However, the total amount of this waste heat is limited and insufficient to provide sufficient cooling capacity for the cleaning process. Summary of the Invention

[0004] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to propose a jet compression refrigeration system for a heat treatment degreasing cleaning machine.

[0005] The objectives of the present invention can be achieved through the following technical solutions: A jet compression refrigeration system for an oil removal cleaning machine includes an oil removal cleaning machine, an evaporator, a compressor, a condenser, and a generator. A first heat exchange circuit is provided between the oil removal cleaning machine and the evaporator. A heating device that can heat the refrigerant in the generator and the solvent in the oil removal cleaning machine is provided between the generator and the oil removal cleaning machine. A second heat exchange circuit is provided between the heating device and the oil removal cleaning machine. A third heat exchange circuit is provided between the generator and the heating device. The heating device includes a heating liquid. The heating device transports the heating liquid to the oil removal cleaning machine, which can be recovered from the second heat exchange circuit after heating and transported to the generator through the third heat exchange circuit. The compressor is arranged between the evaporator and the condenser and is communicated with both respectively. A gas-liquid separator is provided between the evaporator and the condenser. The condenser is communicated with the gas-liquid separator and the generator respectively. An ejector that is communicated with both respectively is provided between the generator and the condenser. The ejector is also communicated with the condenser. The ejector can pass the fluid from the generator and the gas-liquid separator into the condenser.

[0006] The evaporator provides refrigerant cooling to the degreasing cleaning machine through the first heat exchange circuit, and receives the high-temperature fluid discharged from it at the same time. The compressor can compress the vapor formed by evaporation of the evaporator into a high-temperature and high-pressure gaseous refrigerant and pass it into the condenser. The condenser can condense the gaseous refrigerant and pass it into the gas-liquid separator and the generator respectively. The heating device can heat the refrigerant in the generator through the third heat exchange circuit and heat the solvent of the degreasing cleaning machine through the second heat exchange circuit. Since the temperature required to heat the solvent and the refrigerant needs to be above 100°C, the heating device can first transport the heating liquid to the degreasing cleaning machine to heat the solvent, and then transport it back to the heating device through the second heat exchange circuit. The third heat exchange circuit will then heat the once-supplied heat. The heated liquid is transported to the generator to heat the refrigerant, and the waste heat of the heating liquid is used for heating, which can improve the heat utilization rate. The generator can pass the gaseous refrigerant generated by heating into the ejector as the working fluid, and the gas-liquid separator can pass the separated gaseous refrigerant into the ejector as the induced fluid and pass the liquid refrigerant into the condenser. The ejector can mix the working fluid with the induced fluid and then merge it with the gaseous refrigerant compressed by the compressor and flow it into the condenser; by combining the cooling and heating processes of the degreasing cleaning machine and utilizing a simple injection refrigeration structure with no moving parts and driven by low-grade thermal energy, the heat energy of the heating device can be reused, the energy consumption of the compressor can be reduced, and the operating cost of the system can be effectively reduced.

[0007] In the above-mentioned jet compression refrigeration system of the degreasing cleaning machine, the heating device includes a heating tank arranged between the generator and the degreasing cleaning machine, and the heating tank is provided with a heating element that can be heated by electricity and a heating liquid that can be heated by the heating element. The heating liquid can be respectively passed into the degreasing cleaning machine through the second heat exchange circuit and into the generator through the third heat exchange circuit.

[0008] The heating liquid can be water or other liquids, which are heated by the heating element. The heated heating liquid can be transported to the degreasing cleaning machine through the second heat exchange circuit to heat the solvent, or can be transported to the generator through the third heat exchange circuit to heat the refrigerant.

[0009] In the above-mentioned jet compression refrigeration system of the degreasing cleaning machine, the first heat exchange circuit includes a cooling passage and a first receiving passage arranged between the evaporator and the degreasing cleaning machine. The first receiving passage is provided with a first pump body that can pump the high-temperature fluid of the degreasing cooling machine to the evaporator. The evaporator can transport refrigerant to the degreasing cooling machine through the cooling passage, and the cooling passage is provided with a first stop valve.

[0010] The evaporator can transport the refrigerated liquid made from liquid refrigerant to the oil removal cleaning machine through the cooling passage to cool it down. The oil removal cleaning machine can pump the high-temperature fluid to the evaporator through the first pump body to facilitate evaporation. The first stop valve is used to open or close the cooling passage.

[0011] In the above-mentioned jet compression refrigeration system of the degreasing cleaning machine, the second heat exchange circuit includes a first heating passage and a second receiving passage arranged between the heating device and the degreasing cleaning machine. The first heating passage is provided with a second pump body that can transport heating liquid to the degreasing cleaning machine. The degreasing cleaning machine can transport the heated heating liquid to the heating device through the second receiving passage. The second receiving passage is provided with a second stop valve.

[0012] The heating device can transport the high-temperature heating liquid to the degreasing cleaning machine through the first heating passage to heat the solvent in the degreasing cleaning machine. The degreasing cleaning machine can transport the heating liquid after the first heating back to the heating device through the second receiving passage. The second stop valve is used to open or close the second receiving passage.

[0013] In the above-mentioned jet compression refrigeration system of the degreasing cleaning machine, the third heat exchange circuit includes a second heating passage and a third receiving passage arranged between the heating device and the generator. The second heating passage is provided with a third pump body that can transport heating liquid to the generator. The generator can transport the heated heating liquid to the heating device through the third receiving passage. The third receiving passage is provided with a third stop valve.

[0014] The heating device can transport the heating liquid after the first heating to the generator through the third pump body and the second heating passage to heat the refrigerant in the generator. The generator can transport the heating liquid after the second heating back to the heating device through the third receiving passage. The third stop valve is used to open or close the third receiving passage.

[0015] In the above-mentioned jet compression refrigeration system of the oil removal cleaning machine, a first throttle valve is provided between the condenser and the gas-liquid separator.

[0016] The first throttle valve can adjust the temperature of the gaseous refrigerant according to the heat obtained by the generator, thereby controlling the cooling of the induced fluid entering the ejector in the gas-liquid separator. By accurately controlling the opening of the first throttle valve in real time, it is beneficial to improve the utilization rate of waste heat.

[0017] In the above-mentioned jet compression refrigeration system of the degreasing cleaning machine, a second throttle valve is provided between the gas-liquid separator and the evaporator.

[0018] The second throttle valve performs secondary throttling on the liquid refrigerant from the gas-liquid separator, which can meet the lower evaporation temperature requirement, thereby lowering the temperature of the refrigerant, speeding up the cooling process of the oil removal cleaning machine, and improving the efficiency of the oil removal cleaning machine.

[0019] In the above-mentioned jet compression refrigeration system of the degreasing cleaning machine, a working fluid pump capable of pumping liquid refrigerant to the generator is provided between the condenser and the generator.

[0020] In the above-mentioned injection compression refrigeration system of the degreasing cleaning machine, a fourth stop valve is provided between the gas-liquid separator and the ejector.

[0021] When the fourth stop valve is opened, the gas-liquid separator can transport the gaseous refrigerant to the ejector, and when the fourth stop valve is closed, the transport can be stopped.

[0022] In the above-mentioned injection compression refrigeration system of the oil removal cleaning machine, a fifth stop valve is provided between the ejector and the condenser.

[0023] When the fifth stop valve is opened, the ejector can deliver the fluid obtained by mixing the working fluid and the ejection fluid to the condenser; when the fifth stop valve is closed, the delivery can be stopped.

[0024] Compared with the prior art, the present invention combines the cooling and heating processes of the degreasing cleaning machine, and utilizes a simple injection refrigeration structure with no moving parts. It is driven by low-grade thermal energy to realize the heat energy recycling of the heating device, reduce the energy consumption of the compressor, and effectively reduce the operating cost of the system; the first heat exchange path, the second heat exchange path, and the third heat exchange path can be used to perform multiple heat cycles respectively; by setting the first throttle valve, the temperature of the gaseous refrigerant can be adjusted according to the heat obtained by the generator, thereby controlling the refrigeration of the induced fluid entering the ejector in the gas-liquid separator, and accurately controlling the opening of the first throttle valve in real time to improve the utilization rate of waste heat; by setting the second throttle valve, the liquid refrigerant from the gas-liquid separator can be throttled for the second time to meet the lower evaporation temperature requirement, thereby making the temperature of the refrigerant lower, accelerating the cooling time of the degreasing cleaning machine, and improving the efficiency of the degreasing cleaning machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the workflow of the present invention;

[0026] In the figure, 1. oil removal cleaning machine; 2. evaporator; 3. compressor; 4. condenser; 5. generator; 6. first heat exchange circuit; 61. cooling passage; 62. first receiving passage; 63. first pump body; 64. first stop valve; 7. heating tank; 8. second heat exchange circuit; 81. first heating passage; 82. second receiving passage; 83. second pump body; 84. second stop valve; 9. third heat exchange circuit; 91. second heating passage; 92. third receiving passage; 93. third pump body; 94. third stop valve; 10. gas-liquid separator; 11. ejector; 12. first throttle valve; 13. second throttle valve; 14. working fluid pump; 15. fourth stop valve; 16. fifth stop valve. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0028] like Figure 1 As shown, the present invention includes a degreasing cleaning machine 1, an evaporator 2, a compressor 3, a condenser 4, and a generator 5. A first heat exchange circuit 6 is provided between the degreasing cleaning machine 1 and the evaporator 2. A heating device that can heat the refrigerant in the generator 5 and the solvent in the degreasing cleaning machine 1 is provided between the generator 5 and the degreasing cleaning machine 1. The heating device includes a heating liquid. The heating liquid is transported to the degreasing cleaning machine 1 and then heated. The heating liquid can be recovered from the second heat exchange circuit 8 and transported to the generator 5 through the third heat exchange circuit 9. The heating device is connected to the degreasing cleaning machine 1. A second heat exchange circuit 8 is provided, a third heat exchange circuit 9 is provided between the generator 5 and the heating device, the compressor 3 is arranged between the evaporator 2 and the condenser 4 and is communicated with the two respectively, a gas-liquid separator 10 is provided between the evaporator 2 and the condenser 4, the condenser 4 is communicated with the gas-liquid separator 10 and the generator 5 respectively, an ejector 11 is provided between the generator 5 and the condenser 4 and is communicated with the two respectively, the ejector 11 is also communicated with the condenser 4, and the ejector 11 can pass the fluid from the generator 5 and the gas-liquid separator 10 into the condenser 4.

[0029] The evaporator 2 provides the refrigerant for cooling to the degreasing cleaning machine 1 through the first heat exchange circuit 6, and receives the high-temperature fluid discharged from it at the same time. The compressor 3 can compress the vapor formed by evaporation of the evaporator 2 into a high-temperature and high-pressure gaseous refrigerant and pass it into the condenser 4. The condenser 4 can condense the gaseous refrigerant and pass it into the gas-liquid separator 10 and the generator 5 respectively. The heating device can heat the refrigerant in the generator 5 through the third heat exchange circuit 9 and the second heat exchange circuit 8 to heat the solvent of the degreasing cleaning machine 1. Since the temperature required for heating the solvent and the refrigerant is both above 100°C, the heating device can first transport the heating liquid to the degreasing cleaning machine 1 to heat the solvent, and then transport it back to the heating device through the second heat exchange circuit 8. The third heat exchange circuit 9 then heats the once supplied refrigerant. The heated heating liquid is transported to the generator 5 to heat the refrigerant. The waste heat of the heating liquid is used for heating, which can improve the heat utilization rate. The generator 5 can pass the gaseous refrigerant generated by heating into the ejector 11 as the working fluid. The gas-liquid separator 10 can pass the separated gaseous refrigerant into the ejector 11 as the injection fluid and pass the liquid refrigerant into the condenser 4. The ejector 11 can mix the working fluid with the injection fluid and then merge them with the gaseous refrigerant compressed by the compressor 3 and pass them into the condenser 4; by combining the cooling and heating processes of the degreasing cleaning machine 1 and utilizing a simple injection refrigeration structure with no moving parts and driven by low-grade thermal energy, the heat energy of the heating device can be reused, the energy consumption of the compressor 3 can be reduced, and the system operation cost can be effectively reduced.

[0030] The heating device includes a heating tank 7 arranged between the generator 5 and the degreasing cleaning machine 1. The heating tank 7 is provided with a heating element (not shown in the figure) that can be heated by electricity and a heating liquid (not shown in the figure) that can be heated by the heating element. The heating liquid can be respectively passed into the degreasing cleaning machine 1 through the second heat exchange circuit 8 and the third heat exchange circuit 9 and passed into the generator 5.

[0031] The heating liquid can be water or other liquids, which are heated by the heating element. The heated heating liquid can be transported to the degreasing cleaning machine 1 through the second heat exchange circuit 8 to heat the solvent, or can be transported to the generator 5 through the third heat exchange circuit 9 to heat the refrigerant.

[0032] The first heat exchange circuit 6 includes a cooling passage 61 and a first receiving passage 62 arranged between the evaporator 2 and the oil removal and cleaning machine 1. The first receiving passage 62 is provided with a first pump body 63 that can pump the high-temperature fluid of the oil removal and cooling machine to the evaporator 2. The evaporator 2 can transport refrigerant to the oil removal and cooling machine through the cooling passage 61. The cooling passage 61 is provided with a first stop valve 64.

[0033] The evaporator 2 can transport the freezing liquid made from the liquid refrigerant to the oil removal cleaning machine 1 through the cooling passage 61 to cool it down. The oil removal cleaning machine 1 can pump the high-temperature fluid to the evaporator 2 through the first pump body 63 to facilitate evaporation. The first stop valve 64 is used to open or close the cooling passage 61.

[0034] The second heat exchange circuit 8 includes a first heating passage 81 and a second receiving passage 82 arranged between the heating device and the degreasing cleaning machine 1. The first heating passage 81 is provided with a second pump body 83 that can transport heating liquid to the degreasing cleaning machine 1. The degreasing cleaning machine 1 can transport the heated heating liquid to the heating device through the second receiving passage 82. The second receiving passage 82 is provided with a second stop valve 84.

[0035] The heating device can transport the high-temperature heating liquid to the degreasing cleaning machine 1 through the first heating passage 81 to heat the solvent in the degreasing cleaning machine 1. The degreasing cleaning machine 1 can transport the heating liquid after the first heating back to the heating device through the second receiving passage 82. The second stop valve 84 is used to open or close the second receiving passage 82.

[0036] The third heat exchange circuit 9 includes a second heating passage 91 and a third receiving passage 92 arranged between the heating device and the generator 5. The second heating passage 91 is provided with a third pump body 93 that can transport heating liquid to the generator 5. The generator 5 can transport the heated heating liquid to the heating device through the third receiving passage 92. The third receiving passage 92 is provided with a third stop valve 94.

[0037] The heating device can transport the heating liquid after the first heating to the generator 5 through the third pump body 93 and the second heating passage 91 to heat the refrigerant in the generator 5. The generator 5 can transport the heating liquid after the second heating back to the heating device through the third receiving passage 92. The third stop valve 94 is used to open or close the third receiving passage 92.

[0038] A first throttle valve 12 is provided between the condenser 4 and the gas-liquid separator 10. The first throttle valve 12 can adjust the temperature of the gaseous refrigerant according to the heat obtained by the generator 5, thereby controlling the cooling of the ejected fluid entering the ejector 11 from the gas-liquid separator 10. By accurately controlling the opening of the first throttle valve 12 in real time, it is beneficial to improve the utilization rate of waste heat.

[0039] A second throttle valve 13 is provided between the gas-liquid separator 10 and the evaporator 2. The second throttle valve 13 performs secondary throttling on the liquid refrigerant from the gas-liquid separator 10, thereby meeting a lower evaporation temperature requirement, thereby lowering the temperature of the refrigerant, speeding up the cooling process of the degreasing cleaning machine 1, and improving the efficiency of the degreasing cleaning machine 1.

[0040] A working fluid pump 14 is provided between the condenser 4 and the generator 5 , which can pump the liquid refrigerant to the generator 5 .

[0041] A fourth stop valve 15 is provided between the gas-liquid separator 10 and the ejector 11. When the fourth stop valve 15 is opened, the gas-liquid separator 10 can deliver the gaseous refrigerant to the ejector 11, and when the fourth stop valve 15 is closed, the delivery can be stopped.

[0042] A fifth stop valve 16 is provided between the ejector 11 and the condenser 4. When the fifth stop valve 16 is opened, the ejector 11 can deliver the mixed fluid of the ejection fluid and the working fluid to the condenser 4. When the fifth stop valve 16 is closed, the delivery can be stopped.

[0043] The working principle of the present invention is as follows: the evaporator 2 provides the refrigerant liquid to the degreasing cleaning machine 1 through the cooling passage 61, and at the same time receives the high-temperature fluid discharged from it through the first receiving passage 62. The compressor 3 compresses the vapor formed by evaporation of the evaporator 2 into a high-temperature and high-pressure gaseous refrigerant, which is then passed into the condenser 4. The condenser 4 condenses the gaseous refrigerant and passes it into the gas-liquid separator 10 and the generator 5 respectively. The heating element in the heating tank 7 heats the heating liquid. The heating liquid is first transported through the second heating passage 91 to heat the solvent of the degreasing cleaning machine 1. The heated liquid after the solvent is heated is then transported back through the second receiving passage 82. The heating device then delivers the heating liquid after the first heat supply to the generator 5 through the third pump body 93. The heating liquid after heating the refrigerant in the generator 5 is delivered back to the heating device through the third receiving passage 92. The generator 5 passes the gaseous refrigerant generated by heating into the ejector 11 as the working fluid. The gas-liquid separator 10 passes the separated gaseous refrigerant into the ejector 11 as the induced fluid and passes the liquid refrigerant into the condenser 4. The ejector 11 mixes the working fluid with the induced fluid and then merges them with the gaseous refrigerant compressed by the compressor 3 and flows into the condenser 4 to form a closed loop.

[0044] The present invention combines the cooling and heating processes of the degreasing cleaning machine 1, and utilizes a simple injection refrigeration structure with no moving parts, driven by low-grade thermal energy, to realize the reuse of thermal energy of the heating device, reduce the energy consumption of the compressor 3, and effectively reduce the operating cost of the system; the first heat exchange path, the second heat exchange path, and the third heat exchange path can be used to perform multiple heat cycles respectively; by setting the first throttle valve 12, the temperature of the gaseous refrigerant can be adjusted according to the heat obtained by the generator 5, thereby controlling the refrigeration of the induced fluid entering the ejector 11 in the gas-liquid separator 10, and accurately controlling the opening of the first throttle valve 12 in real time to improve the utilization rate of waste heat; by setting the second throttle valve 13, the liquid refrigerant from the gas-liquid separator 10 can be throttled for the second time to meet the lower evaporation temperature requirement, thereby making the temperature of the refrigerant lower, accelerating the cooling time of the degreasing cleaning machine 1, and improving the efficiency of the degreasing cleaning machine 1.

[0045] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A jet compression refrigeration system for an oil removal cleaning machine, characterized in that: The invention comprises an oil removal cleaning machine (1), an evaporator (2), a compressor (3), a condenser (4), and a generator (5). A first heat exchange circuit (6) is provided between the oil removal cleaning machine (1) and the evaporator (2). A heating device for heating the refrigerant in the generator (5) and the solvent in the oil removal cleaning machine (1) is provided between the generator (5) and the oil removal cleaning machine (1). A second heat exchange circuit (8) is provided between the heating device and the oil removal cleaning machine (1). A third heat exchange circuit (9) is provided between the generator (5) and the heating device. The heating device comprises a heating liquid, and the heating device delivers a heating liquid to the oil removal cleaning machine (1). After the heating liquid is heated, it is recovered from the second heat exchange circuit (8) and transported to the generator (5) through the third heat exchange circuit (9). The compressor (3) is arranged between the evaporator (2) and the condenser (4) and is communicated with both of them respectively. A gas-liquid separator (10) is provided between the evaporator (2) and the condenser (4). The condenser (4) is communicated with the gas-liquid separator (10) and the generator (5) respectively. An ejector (11) is provided between the generator (5) and the condenser (4) and is communicated with both of them respectively. The ejector (11) passes the fluid from the generator (5) and the gas-liquid separator (10) into the condenser (4).

2. The jet compression refrigeration system of the oil removal cleaning machine according to claim 1, characterized in that: The heating device comprises a heating tank (7) arranged between the generator (5) and the degreasing cleaning machine (1), wherein the heating tank (7) is provided with a heating element for electrically heating and a heating liquid for heating the heating element, and the heating liquid is respectively passed into the degreasing cleaning machine (1) through the second heat exchange circuit (8) and into the generator (5) through the third heat exchange circuit (9).

3. The jet compression refrigeration system of the oil removal cleaning machine according to claim 1 or 2, characterized in that: The first heat exchange circuit (6) includes a cooling passage (61) and a first receiving passage (62) arranged between the evaporator (2) and the degreasing cleaning machine (1). The first receiving passage (62) is provided with a first pump body (63) for conveying the high-temperature fluid of the degreasing cleaning machine to the evaporator (2). The evaporator (2) conveys the refrigerant to the degreasing cleaning machine through the cooling passage (61). The cooling passage (61) is provided with a first stop valve (64).

4. The jet compression refrigeration system of the oil removal cleaning machine according to claim 2, characterized in that: The second heat exchange circuit (8) includes a first heating passage (81) and a second receiving passage (82) arranged between the heating device and the degreasing cleaning machine (1). The first heating passage (81) is provided with a second pump body (83) for conveying heating liquid to the degreasing cleaning machine (1). The degreasing cleaning machine (1) conveys the heated heating liquid to the heating device through the second receiving passage (82). The second receiving passage (82) is provided with a second stop valve (84).

5. The jet compression refrigeration system of the oil removal cleaning machine according to claim 2, characterized in that: The third heat exchange circuit (9) includes a second heating passage (91) and a third receiving passage (92) arranged between the heating device and the generator (5). The second heating passage (91) is provided with a third pump body (93) for conveying heating liquid to the generator (5). The generator (5) conveys the heated heating liquid to the heating device through the third receiving passage (92). The third receiving passage (92) is provided with a third stop valve (94).

6. The jet compression refrigeration system of the oil removal cleaning machine according to claim 1, 2, 4 or 5, characterized in that: A first throttle valve (12) is provided between the condenser (4) and the gas-liquid separator (10).

7. The jet compression refrigeration system of the oil removal cleaning machine according to claim 1, 2, 4 or 5, characterized in that: A second throttle valve (13) is provided between the gas-liquid separator (10) and the evaporator (2).

8. The jet compression refrigeration system of the degreasing cleaning machine according to claim 1, 2, 4 or 5, characterized in that: A working fluid pump (14) for conveying liquid refrigerant to the generator (5) is provided between the condenser (4) and the generator (5).

9. The jet compression refrigeration system of the oil removal cleaning machine according to claim 1, 2, 4 or 5, characterized in that: A fourth stop valve (15) is provided between the gas-liquid separator (10) and the ejector (11).

10. The jet compression refrigeration system of the oil removal cleaning machine according to claim 1, 2, 4 or 5, characterized in that: A fifth stop valve (16) is provided between the ejector (11) and the condenser (4).

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