Vapor compression heat pump and compression-ejection heat pump system

Abstract

The present application provides a vapor compression heat pump and compression-ejection heat pump system, belonging to the technical field of heat pump. The compressor has a refrigerant vapor passage connected with a heat supplier, the heat supplier also has a condensate pipeline connected with a distribution chamber through a nozzle, the distribution chamber has a refrigerant vapor passage connected with the high-pressure steam inlet of an ejector, the distribution chamber also has a condensate pipeline connected with an evaporator through a throttle valve, the evaporator also has a refrigerant vapor passage connected with the low-pressure steam inlet of the ejector, the ejector also has a medium-pressure refrigerant vapor passage connected with the compressor; the heat supplier also has a heated medium passage connected with the outside, the evaporator also has a low-temperature heat medium passage connected with the outside, forming a vapor compression heat pump.

Description

Technical fields:

[0001] This invention belongs to the field of heat pump technology. Background technology:

[0002] People need cold / heat / steam in their daily lives and production processes. Using heat pump technology to provide cold / heat / steam is an important means to achieve energy efficiency and high-value utilization. In practical applications, the operating parameters, performance index, manufacturing cost, adaptability, and utilization level of heat resources of heat pumps need to be given priority and comprehensive consideration.

[0003] Vapor compression heat pump technology, which operates on the principle of reverse Rankine cycle, has the advantage of being able to achieve constant-temperature heat absorption; however, when it is necessary to meet heating demands with higher parameters, it is of positive significance to find ways to reduce the negative effects of the throttling process.

[0004] An ejector is a pressure-boosting component that effectively utilizes high-temperature heat resources. It has the advantages of simple structure, reliable operation, low investment and long service life. In addition, compared with compressors, ejectors are more adaptable to the compression of wet steam.

[0005] For vapor compression heat pumps, the latent heat of the working fluid needs to be large enough—which makes the selection of the working fluid extremely difficult; therefore, it is very challenging to overcome the limiting requirement of large latent heat of the refrigerant medium by adopting reasonable technical means.

[0006] Based on the principle of simple, proactive, and efficient use of energy to achieve cooling / heating, this invention proposes a vapor compression heat pump and a compression-ejection heat pump system with a reasonable process, simple structure, breaking the latent heat limitation, and achieving a rational performance index. Summary of the Invention:

[0007] The main objective of this invention is to provide a vapor compression heat pump and a compression-ejection heat pump system. The specific contents of the invention are described in detail below:

[0008] 1. A vapor compression heat pump mainly consists of a compressor, a heater, a nozzle, a steam distribution chamber, a throttling valve, an evaporator, and an ejector. The compressor has a refrigerant vapor passage connected to the heater. The heater also has a condensate line connected to the steam distribution chamber via the nozzle. The steam distribution chamber has a refrigerant vapor passage connected to the high-pressure steam inlet of the ejector. The steam distribution chamber also has a condensate line connected to the evaporator via the throttling valve. The evaporator also has a refrigerant vapor passage connected to the low-pressure steam inlet of the ejector. The ejector also has a medium-pressure refrigerant vapor passage connected to the compressor. The heater also has a heated medium passage connected to the outside, and the evaporator also has a low-temperature heat medium passage connected to the outside, thus forming a vapor compression heat pump.

[0009] 2. A vapor compression heat pump is a vapor compression heat pump described in item 1, with the addition of a regenerator. The original configuration of the steam separator having a condensate pipe connected to the evaporator via a throttling valve is changed to the steam separator having a condensate pipe connected to the evaporator via the regenerator and a throttling valve. The original configuration of the evaporator having a refrigerant vapor passage connected to the low-pressure steam inlet of the ejector is changed to the evaporator having a refrigerant vapor passage connected to the low-pressure steam inlet of the ejector after passing through the regenerator, thus forming a vapor compression heat pump.

[0010] 3. A vapor compression heat pump is a vapor compression heat pump described in item 1 or 2, in which a two-phase expander is added and replaces the throttle valve. The two-phase expander is connected to the compressor and transmits power to form a vapor compression heat pump.

[0011] 4. A vapor compression heat pump is formed by adding a second nozzle and replacing the throttle valve in the vapor compression heat pump described in item 1 or 2.

[0012] 5. A compression-ejection heat pump system is formed by adding a second ejector, a high-pressure pump, and a steam generator to any of the vapor compression heat pumps described in items 1-4. The compressor is modified so that the refrigerant vapor passage is connected to the heater, and the compressor has a refrigerant vapor passage connected to the low-pressure steam inlet of the second ejector. The second ejector also has a medium-pressure refrigerant vapor passage connected to the heater. The heater is equipped with a condensate pipeline connected to the steam generator via the high-pressure pump. The steam generator also has a steam passage connected to the high-pressure steam inlet of the second ejector, and the steam generator also has a high-temperature heat medium passage connected to the outside, thus forming a compression-ejection heat pump system.

[0013] 6. A compression-ejection heat pump system is formed by adding a second ejector to any of the vapor compression heat pumps described in items 1-4. The compressor's refrigerant vapor passage is connected to the heater, and the compressor's refrigerant vapor passage is connected to the low-pressure steam inlet of the second ejector. The second ejector also has a medium-pressure refrigerant vapor passage connected to the heater, and an external working steam passage connected to the high-pressure steam inlet of the second ejector. The heater is equipped with a condensate pipeline connected to the outside, thus forming a compression-ejection heat pump system.

[0014] 7. A compression-ejection heat pump system is formed by adding a second ejector, a high-pressure pump, and a steam generator to any of the vapor compression heat pumps described in items 1-4. An external liquid medium pipeline is connected to the steam generator via the high-pressure pump. The steam generator also has a steam channel connected to the high-pressure steam inlet of the second ejector. The heating unit is adjusted from having a heated medium channel connected to the outside to having a heated medium channel connected to the low-pressure steam inlet of the second ejector after passing through the heating unit. The second ejector also has a user steam channel connected to the outside, and the steam generator also has a high-temperature heat medium channel connected to the outside, thus forming a compression-ejection heat pump system.

[0015] 8. A compression-ejection heat pump system is formed by adding a second ejector to any of the vapor compression heat pumps described in items 1-4. The ejector has an external working steam channel connected to the high-pressure steam inlet of the ejector. The heating medium channel of the heater is adjusted to be connected to the outside, and the external heating medium channel is connected to the low-pressure steam inlet of the second ejector after passing through the heating unit. The second ejector also has a user steam channel connected to the outside, thus forming a compression-ejection heat pump system.

[0016] 9. A compression-ejector heat pump system is constructed by adding a second ejector, a high-pressure pump, a steam generator, a second high-pressure pump, and a third ejector to any of the vapor compression heat pumps described in items 1-4. The compressor's refrigerant vapor passage is adjusted to connect to the heater; instead, the compressor's refrigerant vapor passage connects to the low-pressure steam inlet of the second ejector. The second ejector then has a medium-pressure refrigerant vapor passage connecting to the heater. The heater is equipped with a condensate pipeline that connects to the steam generator via the high-pressure pump. The steam generator also has a steam passage connecting to the high-pressure steam inlet of the ejector and a high-temperature heat medium passage connecting to the outside. An external liquid medium pipeline connects to the steam generator via the second high-pressure pump, and the steam generator then has a steam passage connecting to the high-pressure steam inlet of the third ejector. The heater's heated medium passage is adjusted to connect to the outside; instead, the heated medium passage connects to the low-pressure steam inlet of the third ejector after passing through the heater. The third ejector also has a user steam passage connecting to the outside, thus forming a compression-ejector heat pump system.

[0017] 10. A compression-ejection heat pump system is formed by adding a second steam generator to any of the vapor compression heat pumps described in item 9. An external liquid medium pipeline is connected to the steam generator via a second high-pressure pump, and the steam generator is then connected to the high-pressure steam inlet of a third ejector via a steam channel. The system is adjusted so that an external liquid medium pipeline is connected to the second steam generator via a second high-pressure pump, and the second steam generator is then connected to the high-pressure steam inlet of the third ejector via a steam channel. The second steam generator also has a high-temperature heat medium channel connected to the outside, thus forming a compression-ejection heat pump system. Attached image description:

[0018] Figure 1 This is a principle thermodynamic system diagram of a vapor compression heat pump provided by the present invention.

[0019] Figure 2 This is a second principle thermodynamic system diagram of a vapor compression heat pump provided by the present invention.

[0020] Figure 3 This is a third principle thermodynamic system diagram of a vapor compression heat pump provided by the present invention.

[0021] Figure 4This is a fourth principle thermodynamic system diagram of a vapor compression heat pump provided by the present invention.

[0022] Figure 5 This is a principle thermodynamic system diagram of a compression-ejection heat pump system provided by the present invention.

[0023] Figure 6 This is a second principle thermodynamic system diagram of a compression-ejection heat pump system provided by the present invention.

[0024] Figure 7 This is a third principle thermodynamic system diagram of a compression-ejection heat pump system provided by the present invention.

[0025] Figure 8 This is a fourth principle thermodynamic system diagram of a compression-ejection heat pump system provided by the present invention.

[0026] Figure 9 This is the fifth principle thermodynamic system diagram of the compression-ejection heat pump system provided by the present invention.

[0027] Figure 10 This is the sixth principle thermodynamic system diagram of the compression-ejection heat pump system provided by the present invention.

[0028] In the diagram, 1-compressor, 2-heater, 3-nozzle, 4-steam chamber, 5-throttle valve, 6-evaporator, 7-ejector, 8-regenerator, 9-two-phase expander, 10-second nozzle, 11-second ejector, 12-high-pressure pump, 13-steam generator, 14-second high-pressure pump, 15-third ejector, 16-second steam generator. Detailed implementation method:

[0029] First, it should be noted that the structure and process are not repeated unless necessary, and obvious processes are not described. The invention will now be described in detail with reference to the accompanying drawings and examples.

[0030] Figure 1 The vapor compression heat pump shown is implemented as follows:

[0031] (1) Structurally, it is mainly composed of a compressor, a heater, a nozzle, a steam distribution chamber, a throttle valve, an evaporator, and an ejector; the compressor 1 has a refrigerant vapor passage connected to the heater 2, the heater 2 also has a condensate pipeline connected to the steam distribution chamber 4 via the nozzle 3, the steam distribution chamber 4 has a refrigerant vapor passage connected to the high-pressure steam inlet of the ejector 7, the steam distribution chamber 4 also has a condensate pipeline connected to the evaporator 6 via the throttle valve 5, the evaporator 6 also has a refrigerant vapor passage connected to the low-pressure steam inlet of the ejector 7, the ejector 7 also has a medium-pressure refrigerant vapor passage connected to the compressor 1; the heater 2 also has a heated medium passage connected to the outside, and the evaporator 6 also has a low-temperature heat medium passage connected to the outside.

[0032] (2) In terms of process, the refrigerant vapor discharged by the compressor 1 flows through the heater 2 to release heat and condense, flows through the nozzle 3 to reduce pressure and increase speed, and then enters the steam separator 4 for gas-liquid separation; the refrigerant vapor discharged by the steam separator 4 is provided to the ejector 7 as working steam, the condensate discharged by the steam separator 4 flows through the throttle valve 5 to reduce pressure and temperature, flows through the evaporator 6 to absorb heat and vaporize, and then enters the ejector 7 through the low-pressure steam inlet; the working steam enters the ejector 7, flows through the nozzle to reduce pressure and increase speed and form low pressure, the refrigerant vapor generated by the evaporator 6 is drawn into the low-pressure area of ​​the ejector 7, the two steams are mixed and flow through the diffuser to reduce speed and increase pressure to form medium-pressure refrigerant vapor and supply it to the compressor 1; the external mechanical energy is provided by the compressor 1, the heated medium obtains high temperature heat load through the heater 2, and the low temperature heat medium obtains low temperature heat load through the evaporator 6, forming a vapor compression heat pump.

[0033] Figure 2 The vapor compression heat pump shown is implemented as follows:

[0034] (1) Structurally, in Figure 1 In the vapor compression heat pump shown, a regenerator 8 is added. The connection between the condensate pipe of the steam distribution chamber 4 and the evaporator 6 via the throttling valve 5 is adjusted so that the condensate pipe of the steam distribution chamber 4 is connected to the evaporator 6 via the regenerator 8 and the throttling valve 5. The connection between the refrigerant vapor passage of the evaporator 6 and the low-pressure steam inlet of the ejector 7 is adjusted so that the refrigerant vapor passage of the evaporator 6 is connected to the low-pressure steam inlet of the ejector 7 after passing through the regenerator 8.

[0035] (2) In terms of process, with Figure 1 Compared to the vapor compression heat pump shown, the difference is that the condensate discharged from the steam distribution chamber 4 flows through the regenerator 8 to release heat and cool down, flows through the throttling valve 5 to reduce pressure and temperature, flows through the evaporator 6 to absorb heat and vaporize, flows through the regenerator 8 to absorb heat, and then enters the ejector 7 to form a vapor compression heat pump.

[0036] Figure 3 The vapor compression heat pump shown is implemented as follows:

[0037] (1) Structurally, in Figure 1In the vapor compression heat pump shown, a two-phase expander 9 is added and replaces the throttle valve 5. The two-phase expander 9 is connected to the compressor 1 and transmits power.

[0038] (2) In terms of process, with Figure 1 Compared to the vapor compression heat pump shown, the difference is that the condensate discharged from the steam separator 4 flows through the two-phase expander 9 to reduce pressure and do work, and then enters the evaporator 6 to absorb heat and vaporize; the mechanical energy output by the two-phase expander 9 is provided to the compressor 1 to provide power, thus forming a vapor compression heat pump.

[0039] Figure 4 The vapor compression heat pump shown is implemented as follows:

[0040] (1) Structurally, in Figure 1 In the vapor compression heat pump shown, a second nozzle 10 is added and replaces the throttle valve 5.

[0041] (2) In terms of process, with Figure 1 Compared to the vapor compression heat pump shown, the difference is that the condensate discharged from the steam distribution chamber 4 flows through the second nozzle 10 to reduce pressure and increase speed, and then enters the evaporator 6 to absorb heat and vaporize, forming a vapor compression heat pump.

[0042] Figure 5 The compression-ejection heat pump system shown is implemented as follows:

[0043] (1) Structurally, in Figure 1 In the vapor compression heat pump shown, a second ejector, a high-pressure pump, and a steam generator are added. The compressor 1 is connected to the heater 2 via a refrigerant vapor channel. The compressor 1 is then connected to the low-pressure steam inlet of the second ejector 11 via a refrigerant vapor channel. The second ejector 11 is also connected to the heater 2 via a medium-pressure refrigerant vapor channel. The heater 2 is equipped with a condensate pipeline that is connected to the steam generator 13 via the high-pressure pump 12. The steam generator 13 also has a steam channel that is connected to the high-pressure steam inlet of the second ejector 11. The steam generator 13 also has a high-temperature heat medium channel that is connected to the outside.

[0044] (2) In terms of process, with Figure 1Compared to the vapor compression heat pump shown, the difference lies in the following: the circulating working fluid discharged from the compressor 1 enters the second ejector 11 through the low-pressure steam inlet, and the steam generated by the steam generator 13 enters the second ejector 11 through the high-pressure steam inlet; the high-pressure steam enters the second ejector 11, flows through the nozzle to reduce pressure and increase speed, and forms a low-pressure system; the refrigerant vapor discharged from the compressor 1 is drawn into the low-pressure zone of the second ejector 11; after the two steam streams mix, they flow through the diffuser to reduce speed and increase pressure, forming medium-pressure steam, which is then supplied to the heater 2; the medium-pressure steam enters the heater 2 to release heat and condense, and then splits into two streams—the first stream flows through the high-pressure pump 12 to increase pressure and then enters the steam generator 13 to absorb heat and vaporize; the second stream enters the nozzle 3 to reduce pressure and increase speed; the high-temperature heat medium provides the driving heat load through the steam generator 13, forming a compression-ejector heat pump system.

[0045] Figure 6 The compression-ejection heat pump system shown is implemented as follows:

[0046] (1) Structurally, in Figure 1 In the vapor compression heat pump shown, a second ejector 11 is added. The compressor 1 is connected to the heater 2 via a refrigerant vapor channel. The compressor 1 is then connected to the low-pressure steam inlet of the second ejector 11 via a refrigerant vapor channel. The second ejector 11 is also connected to the heater 2 via a medium-pressure refrigerant vapor channel. An external working steam channel is connected to the high-pressure steam inlet of the second ejector 11. The heater 2 is also equipped with a condensate pipeline connected to the outside.

[0047] (2) In terms of process, with Figure 1 Compared to the vapor compression heat pump shown, the difference lies in the following: the refrigerant vapor discharged from the compressor 1 enters the second ejector 11 through the low-pressure steam inlet, and the external working steam enters the second ejector 11 through the high-pressure steam inlet; the working steam enters the second ejector 11, flows through the nozzle to reduce pressure and increase speed, and forms a low pressure; the refrigerant vapor discharged from the compressor 1 is drawn into the low-pressure zone of the second ejector 11; after the two steams are mixed, they flow through the diffuser to reduce speed and increase pressure, forming medium-pressure steam, which is then supplied to the heater 2; the medium-pressure steam enters the heater 2 to release heat and condense, and then splits into two paths—the first path is discharged to the outside, and the second path enters the nozzle 3 to reduce pressure and increase speed; the external working steam provides a steam-driven heat load through the second ejector 11, forming a compression-ejection heat pump system.

[0048] Figure 7 The compression-ejection heat pump system shown is implemented as follows:

[0049] (1) Structurally, in Figure 1In the vapor compression heat pump shown, a second ejector, a high-pressure pump, and a steam generator are added. An external liquid medium pipeline is connected to the steam generator 13 via the high-pressure pump 12. The steam generator 13 also has a steam channel connected to the high-pressure steam inlet of the second ejector 11. The heating unit 2 is adjusted so that the heated medium channel is connected to the outside via the heating unit 2 and then to the low-pressure steam inlet of the second ejector 11. The second ejector 11 also has a user steam channel connected to the outside. The steam generator 13 also has a high-temperature heat medium channel connected to the outside.

[0050] (2) In terms of process, with Figure 1 Compared to the vapor compression heat pump shown, the difference lies in the following: the external liquid medium flows through the high-pressure pump 12 to increase its pressure and then enters the steam generator 13 to absorb heat and vaporize, and is then provided to the second ejector 11 as working steam; the external heated medium flows through the heater 2 to absorb heat and vaporize, and is then provided to the second ejector 11; the working steam enters the second ejector 11, flows through the nozzle to decrease pressure and increase speed to form a low pressure, and the steam discharged from the heater 2 is drawn into the low-pressure zone of the second ejector 11. After the two steam streams are mixed, they flow through the diffuser to decrease speed and increase pressure to form medium-pressure steam and are provided to the steam user; the high-temperature heat medium provides the driving heat load through the steam generator 13, forming a compression-ejection heat pump system.

[0051] Figure 8 The compression-ejection heat pump system shown is implemented as follows:

[0052] (1) Structurally, in Figure 1 In the vapor compression heat pump shown, a second ejector 11 is added. There is an external working steam channel connecting the high-pressure steam inlet of the ejector 11. The heating medium channel of the heater 2 is adjusted to be connected to the outside, so that the external heating medium channel is connected to the low-pressure steam inlet of the second ejector 11 after passing through the heater 2. The second ejector 11 also has a user steam channel connected to the outside.

[0053] (2) In terms of process, with Figure 1 Compared to the vapor compression heat pump shown, the difference lies in the following: the external heated medium flows through the heater 2 to absorb heat and vaporize, and then is supplied to the second ejector 11; the external working steam enters the second ejector 11, flows through the nozzle to reduce pressure and increase speed to form a low pressure, and the steam discharged from the heater 2 is drawn into the low-pressure zone of the second ejector 11. After the two steams are mixed, they flow through the diffuser to reduce speed and increase pressure to form medium-pressure steam and are supplied to the steam user; the external working steam provides steam-type driven heat load through the second ejector 11, forming a compression-ejection heat pump system.

[0054] Figure 9 The compression-ejection heat pump system shown is implemented as follows:

[0055] (1) Structurally, in Figure 4 In the vapor compression heat pump shown, a second ejector, a high-pressure pump, a steam generator, a second high-pressure pump, and a third ejector are added. The refrigerant vapor passage of compressor 1 connected to heater 2 is adjusted so that compressor 1 has a refrigerant vapor passage connected to the low-pressure steam inlet of the second ejector 11. The second ejector 11 then has a medium-pressure refrigerant vapor passage connected to heater 2. Heater 2 is equipped with a condensate pipeline connected to steam generator 13 via high-pressure pump 12. Steam generator 13 also has a steam passage connected to the high-pressure steam inlet of ejector 11. Steam generator 13 also has a high-temperature heat medium passage connected to the outside. The outside also has a liquid medium pipeline connected to steam generator 13 via second high-pressure pump 14. Steam generator 13 then has a steam passage connected to the high-pressure steam inlet of third ejector 15. The heated medium passage of heater 2 connected to the outside is adjusted so that the heated medium passage of the outside connects to the low-pressure steam inlet of third ejector 15 after heater 2. Third ejector 15 also has a user steam passage connected to the outside.

[0056] (2) In terms of process, with Figure 4 Compared to the vapor compression heat pump shown, the difference lies in the following: the refrigerant vapor discharged from compressor 1 enters the second ejector 11 through the low-pressure steam inlet, while the steam generated by steam generator 13 enters the second ejector 11 through the high-pressure steam inlet. The high-pressure steam enters the second ejector 11, flows through nozzles to decrease pressure and increase speed, forming a low-pressure system. The refrigerant vapor discharged from compressor 1 is drawn into the low-pressure zone of the second ejector 11. After the two steam streams mix, they flow through a diffuser to decrease speed and increase pressure, forming medium-pressure steam, which is then supplied to heater 2. The medium-pressure steam enters heater 2, releases heat, and condenses. It then splits into two streams—the first stream flows through high-pressure pump 12 to increase pressure before entering steam generator 13 to absorb heat. Vaporization occurs in the second path, which enters the nozzle 3 for depressurization and acceleration. The external liquid medium flows through the second high-pressure pump 14 for pressurization, then flows through the steam generator 13 for heat absorption and vaporization, and is subsequently supplied to the third ejector 15 as working steam. The external heated medium flows through the heater 2 for heat absorption and vaporization, and is subsequently supplied to the third ejector 15. The working steam enters the third ejector 15, flows through the nozzle for depressurization and acceleration, and forms a low-pressure system. The steam discharged from the heater 2 is drawn into the low-pressure zone of the third ejector 15. After the two steam streams mix, they flow through the diffuser for depressurization and pressurization to form medium-pressure steam, which is then supplied to the steam user. The high-temperature heat medium provides the driving heat load through the steam generator 13, forming a compression-ejection heat pump system.

[0057] Figure 10 The compression-ejection heat pump system shown is implemented as follows:

[0058] (1) Structurally, in Figure 9In the compression-ejection heat pump system shown, a second steam generator is added. An external liquid medium pipeline is connected to the steam generator 13 via the second high-pressure pump 14. The steam generator 13 then has a steam channel connected to the high-pressure steam inlet of the third ejector 15. The system is adjusted so that an external liquid medium pipeline is connected to the second steam generator via the second high-pressure pump 14. The second steam generator then has a steam channel connected to the high-pressure steam inlet of the third ejector 15. The second steam generator also has a high-temperature heat medium channel connected to the outside.

[0059] (2) In terms of process, with Figure 9 Compared to the compression-ejection heat pump system shown, the difference is that: after the external liquid medium is pressurized by the second high-pressure pump 14, it enters the second steam generator to absorb heat and vaporize, and then provides it to the third ejector 15 as working steam; the high-temperature heat medium provides the driving heat load through the second steam generator, forming a compression-ejection heat pump system.

[0060] The effects achievable by this invention—the vapor compression heat pump and compression-ejection heat pump systems proposed in this invention have the following effects and advantages:

[0061] (1) Effectively realize the efficient and high-value utilization of condensation heat, break the limiting requirement that the latent heat of the circulating working fluid must be large enough, and open up new space for the selection of circulating working fluid.

[0062] (2) The proposed vapor compression heat pump effectively utilizes condensation heat, significantly reduces irreversible losses during the condensate depressurization process, and is conducive to improving the performance index.

[0063] (3) The technical objectives are achieved by combining the nozzle, steam distribution chamber and injector. The process is reasonable, the structure is simple and the manufacturing cost is low.

[0064] (4) New technologies for refrigeration, heating and efficient steam production using mechanical energy or combined thermal energy have been developed.

[0065] (5) Combining jet technology and compression technology, taking advantage of each other's strengths and compensating for each other's weaknesses, has broadened the application scope of compression heat pump technology.

[0066] (6) It has improved the ability of compression heat pump technology to provide both cooling and heating, as well as both cooling and steam.

[0067] (7) Provides a variety of specific technical solutions that can cope with many different actual situations, which is conducive to expanding the application scope and use value of vapor compression heat pump and compression-jet heat pump systems.

Claims

1. A vapor compression heat pump is mainly composed of a compressor, a heater, a nozzle, a steam distribution chamber, a throttling valve, an evaporator, and an ejector. The compressor (1) has a refrigerant vapor passage connected to the heater (2). The heater (2) also has a condensate pipeline connected to the steam distribution chamber (4) via the nozzle (3). The steam distribution chamber (4) has a refrigerant vapor passage connected to the high-pressure steam inlet of the ejector (7). The steam distribution chamber (4) also has a condensate pipeline connected to the evaporator (6) via the throttling valve (5). The evaporator (6) also has a refrigerant vapor passage connected to the low-pressure steam inlet of the ejector (7). The ejector (7) also has a medium-pressure refrigerant vapor passage connected to the compressor (1). The heater (2) also has a heated medium passage connected to the outside. The evaporator (6) also has a low-temperature heat medium passage connected to the outside, forming a vapor compression heat pump.

2. A vapor compression heat pump is a vapor compression heat pump as described in claim 1, wherein a regenerator (8) is added, and the condensate pipe of the steam distribution chamber (4) is connected to the evaporator (6) through the throttle valve (5) and adjusted to the steam distribution chamber (4) having a condensate pipe connected to the evaporator (6) through the regenerator (8) and the throttle valve (5). The refrigerant vapor passage of the evaporator (6) is connected to the low-pressure steam inlet of the ejector (7) and adjusted to the evaporator (6) having a refrigerant vapor passage connected to the low-pressure steam inlet of the ejector (7) after passing through the regenerator (8), thus forming a vapor compression heat pump.

3. A vapor compression heat pump is a vapor compression heat pump according to claim 1 or claim 2, wherein a two-phase expander (9) is added and replaces the throttle valve (5), the two-phase expander (9) is connected to the compressor (1) and transmits power to form a vapor compression heat pump.

4. A vapor compression heat pump is formed by adding a second nozzle (10) and replacing the throttle valve (5) to the vapor compression heat pump described in claim 1 or claim 2.

5. A compression-ejection heat pump system is a vapor compression heat pump according to any one of claims 1-4, wherein a second ejector, a high-pressure pump and a steam generator are added, and the compressor (1) is adjusted to have a refrigerant vapor channel connected to the heater (2) so that the compressor (1) has a refrigerant vapor channel connected to the low-pressure steam inlet of the second ejector (11), the second ejector (11) has a medium-pressure refrigerant vapor channel connected to the heater (2), the heater (2) is provided with a condensate pipeline connected to the steam generator (13) via the high-pressure pump (12), the steam generator (13) also has a steam channel connected to the high-pressure steam inlet of the second ejector (11), and the steam generator (13) also has a high-temperature heat medium channel connected to the outside, thus forming a compression-ejection heat pump system.

6. A compression-ejection heat pump system is a vapor compression heat pump according to any one of claims 1-4, wherein a second ejector (11) is added, the compressor (1) is connected to the heater (2) via a refrigerant vapor channel, and the compressor (1) is connected to the low-pressure steam inlet of the second ejector (11) via a refrigerant vapor channel, the second ejector (11) is connected to the heater (2) via a medium-pressure refrigerant vapor channel, and an external working steam channel is connected to the high-pressure steam inlet of the second ejector (11). The heater (2) is provided with a condensate pipeline connected to the outside, thus forming a compression-ejection heat pump system.

7. A compression-ejection heat pump system is a vapor compression heat pump according to any one of claims 1-4, with the addition of a second ejector, a high-pressure pump and a steam generator. An external liquid medium pipeline is connected to the steam generator (13) via the high-pressure pump (12). The steam generator (13) also has a steam channel connected to the high-pressure steam inlet of the second ejector (11). The heating unit (2) is adjusted so that the heated medium channel is connected to the outside via the heating unit (2) and then to the low-pressure steam inlet of the second ejector (11). The second ejector (11) also has a user steam channel connected to the outside. The steam generator (13) also has a high-temperature heat medium channel connected to the outside, thus forming a compression-ejection heat pump system.

8. A compression-ejection heat pump system is a vapor compression heat pump according to any one of claims 1-4, wherein a second ejector (11) is added, and an external working steam channel is connected to the high-pressure steam inlet of the ejector (11). The heating unit (2) is adjusted to have a heated medium channel connected to the outside, and the heated medium channel is connected to the low-pressure steam inlet of the second ejector (11) after passing through the heating unit (2). The second ejector (11) also has a user steam channel connected to the outside, thus forming a compression-ejection heat pump system.

9. A compression-ejector heat pump system, comprising any one of the vapor compression heat pumps described in claims 1-4, wherein a second ejector, a high-pressure pump, a steam generator, a second high-pressure pump, and a third ejector are added; the compressor (1) is connected to the heater (2) via a refrigerant vapor passage, and the compressor (1) is connected to the low-pressure steam inlet of the second ejector (11); the second ejector (11) is further connected to the heater (2) via a medium-pressure refrigerant vapor passage; the heater (2) is provided with a condensate pipeline connected to the steam generator (13) via a high-pressure pump (12); and the steam generator (13) also has a steam passage. The high-pressure steam inlet of the ejector (11) is connected to the steam generator (13), which also has a high-temperature heat medium channel connected to the outside. The external liquid medium pipeline is connected to the steam generator (13) via the second high-pressure pump (14). The steam generator (13) then has a steam channel connected to the high-pressure steam inlet of the third ejector (15). The heating unit (2) is adjusted so that the heated medium channel is connected to the outside, and the heated medium channel is connected to the low-pressure steam inlet of the third ejector (15) via the heating unit (2). The third ejector (15) also has a user steam channel connected to the outside, forming a compression-ejection heat pump system.

10. A compression-ejection heat pump system is a vapor compression heat pump according to any one of claims 9, wherein a second steam generator (16) is added, and an external liquid medium pipeline is connected to the steam generator (13) via a second high-pressure pump (14), and the steam generator (13) is then connected to the high-pressure steam inlet of the third ejector (15) via a steam channel. The system is adjusted so that an external liquid medium pipeline is connected to the second steam generator (16) via a second high-pressure pump (14), and the second steam generator (16) is then connected to the high-pressure steam inlet of the third ejector (15) via a steam channel. The second steam generator (16) also has a high-temperature heat medium channel connected to the outside, thus forming a compression-ejection heat pump system.

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