CN112344593A - Single-working medium combined cycle heat pump device - Google Patents

Abstract

The invention provides a single-working medium combined cycle heat pump device, belonging to the technical field of refrigeration and heat pumps. The compressor is divided into two paths after a circulating working medium channel is communicated with a heat supplier, wherein the first path is communicated with a heat regenerator through a second heat supplier and an expander, the second path is communicated with a second compressor, the second compressor is also provided with a circulating working medium channel which is communicated with the heat regenerator, then the heat regenerator is further provided with a condensate liquid pipeline which is communicated with an evaporator through a throttle valve, the evaporator is also provided with a circulating working medium channel which is communicated with the heat regenerator through a third compressor, and the heat regenerator is further provided with a circulating working medium channel which is communicated with the compressor; the heat supply device and the second heat supply device are respectively communicated with the outside through a heated medium channel, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.

Description

Single-working medium combined cycle heat pump device

The technical field is as follows:

the invention belongs to the technical field of refrigeration and heat pumps.

Background art:

cold demand, heat demand and power demand, which are common in human life and production; the conversion of mechanical energy into heat energy is an important way to realize refrigeration and efficient heating. In general, the temperature of the cooling medium changes during cooling, and the temperature of the medium to be heated also changes during heating; when mechanical energy is used for heating, the heated medium has the dual characteristics of temperature changing and high temperature at the same time, so that the problems of unreasonable performance index, low heating parameter, high compression ratio, too large working pressure and the like exist when refrigeration or heating is realized by adopting a single thermodynamic cycle theory.

Specifically, when heat release mainly depends on a condensation process, the loss of temperature difference between a working medium and a heated medium is large in a vapor compression heat pump device based on reverse Rankine cycle; meanwhile, the condensate is large in loss or high in utilization cost in the pressure reduction process; when the supercritical working condition is adopted, the compression ratio is higher, so that the manufacturing cost of the compressor is high, the safety is reduced, and the like; in both cases, the adverse effect on obtaining low temperature thermal load is difficult to eliminate. Similarly, a gas compression heat pump apparatus based on a reverse brayton cycle requires a low compression ratio, which limits the improvement of heating parameters; meanwhile, the low-temperature process is temperature-changing, so that the low-temperature link usually has large temperature difference loss during refrigeration or heating, and the performance index is not ideal.

Undeniably, the vapor compression heat pump has the advantages of absorbing low-temperature heat load in the evaporation process, and the gas compression heat pump has the advantages of variable-temperature heat release; if the advantages of the two can be kept, the sensible heat of the condensate is fully utilized, and the side effect of the pressure reduction of the condensate is eliminated, the obtained heat pump device has reasonable performance index, so that the application occasions of the heat pump device are enlarged. Based on comprehensive consideration, the invention aims to simplify, actively and efficiently use mechanical energy for refrigeration or heating from the principle of simply, actively and efficiently using mechanical energy, and provides a single-working-medium combined cycle heat pump device.

The invention content is as follows:

the invention mainly aims to provide a single-working-medium combined cycle heat pump device, and the specific invention contents are explained in sections as follows:

1. the single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator and a heat regenerator; the compressor is divided into two paths after a circulating working medium channel is communicated with a heat supplier, wherein the first path is communicated with a heat regenerator through a second heat supplier and an expander, the second path is communicated with a second compressor, the second compressor is also provided with a circulating working medium channel which is communicated with the heat regenerator, then the heat regenerator is further provided with a condensate liquid pipeline which is communicated with an evaporator through a throttle valve, the evaporator is also provided with a circulating working medium channel which is communicated with the heat regenerator through a third compressor, and the heat regenerator is further provided with a circulating working medium channel which is communicated with the compressor; the heat supply device and the second heat supply device are respectively communicated with the outside through a heated medium channel, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.

2. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator and a third heat supplier; the compressor is divided into two paths after a circulating working medium channel is communicated with a heat supplier, wherein the first path is communicated with a heat regenerator through a second heat supplier and an expander, the second path is communicated with the second compressor, the second compressor is also provided with a circulating working medium channel which is communicated with the heat regenerator through a third heat supplier, then the heat regenerator is further provided with a condensate liquid pipeline which is communicated with an evaporator through a throttle valve, the evaporator is also provided with a circulating working medium channel which is communicated with the heat regenerator through the third compressor, and the heat regenerator is also provided with a circulating working medium channel which is communicated with the compressor; the heat supply device, the second heat supply device and the third heat supply device are respectively communicated with the outside through heated medium channels, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.

3. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a spray pipe and a second heat regenerator; the compressor is provided with a circulating working medium channel which is communicated with a heat supply device and then divided into two paths, wherein the first path is communicated with the expander through a second heat supply device, the second path is communicated with the second compressor, the circulating working medium channel is also communicated with the heat return device through a second heat return device and then divided into two paths, the first path is led out from the middle or the tail end of the heat return device, is communicated with the expander through a spray pipe and the second heat return device, is led out from the tail end of the heat return device and then is communicated with the evaporator through a throttle valve, the evaporator is also provided with a circulating working medium channel which is communicated with the heat return device through a third compressor, the expander is also provided with a circulating working medium channel which is communicated with the heat return device, and the heat return device is also; the heat supply device and the second heat supply device are respectively communicated with the outside through a heated medium channel, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.

4. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator and a reheater; the compressor is divided into two paths after a circulating working medium channel is communicated with a heat supplier, wherein the first path is communicated with the expander through a second heat supplier, the expander and a circulating working medium channel are communicated with the expander through a reheater, the expander and a circulating working medium channel are communicated with a heat regenerator, the second path is communicated with the second compressor, the second compressor and the circulating working medium channel are communicated with the heat regenerator through the reheater, then the heat regenerator is communicated with the evaporator through a condensate liquid pipeline, the evaporator and the circulating working medium channel are communicated with the heat regenerator through a third compressor, and the heat regenerator and the circulating working medium channel are communicated with the compressor; the heat supply device and the second heat supply device are respectively communicated with the outside through a heated medium channel, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.

5. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator and a high-temperature heat regenerator; the compressor is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator through a heat supply device and then divided into two paths, wherein the first path is communicated with the heat regenerator through a second heat supply device and an expander, the second path is communicated with the second compressor, the circulating working medium channel of the second compressor is communicated with the heat regenerator, then the heat regenerator is further provided with a condensate liquid pipeline which is communicated with an evaporator through a throttle valve, the evaporator is further provided with a circulating working medium channel which is communicated with the heat regenerator through a third compressor, and the heat regenerator is further provided with a circulating working medium channel which is communicated with the compressor through the; the heat supply device and the second heat supply device are respectively communicated with the outside through a heated medium channel, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.

6. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a third heat supplier and a high-temperature heat regenerator; the compressor is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator through a heat supply device and then divided into two paths, wherein the first path is communicated with the heat regenerator through a second heat supply device and an expansion machine, the second path is communicated with the second compressor, the circulating working medium channel of the second compressor is communicated with the heat regenerator through a third heat supply device, then the heat regenerator is further provided with a condensate liquid pipeline which is communicated with an evaporator through a throttle valve, the evaporator is further provided with a circulating working medium channel which is communicated with the heat regenerator through the third compressor, and the heat regenerator is further provided with a circulating working medium channel which is communicated with the compressor; the heat supply device, the second heat supply device and the third heat supply device are respectively communicated with the outside through heated medium channels, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.

7. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a spray pipe, a second heat regenerator and a high-temperature heat regenerator; the compressor is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator through a heat supply device and then divided into two paths, wherein the first path is communicated with an expander through a second heat supply device, the second path is communicated with a second compressor, the circulating working medium channel is also communicated with the heat regenerator through the second heat regenerator and then divided into two paths, the first path is led out from the middle or tail end of the heat regenerator, is communicated with the expander through a spray pipe and a second heat regenerator and then is communicated with the expander through a middle air inlet port, the second path is led out from the tail end of the heat regenerator and is communicated with an evaporator through a throttle valve, the evaporator is also provided with a circulating working medium channel which is communicated with the heat regenerator through a third compressor, the expander is also provided with a circulating working medium channel which is communicated with the heat regenerator; the heat supply device and the second heat supply device are respectively communicated with the outside through a heated medium channel, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.

8. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a reheater and a high-temperature heat regenerator; the compressor is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator through a heat supplier and then divided into two paths, wherein the first path is communicated with an expander through a second heat supplier, the expander is also provided with a circulating working medium channel which is communicated with the expander through a reheater, the expander is also provided with a circulating working medium channel which is communicated with the heat regenerator, the second path is communicated with the second compressor, the second compressor is also provided with a circulating working medium channel which is communicated with the heat regenerator through the reheater, then the heat regenerator is further provided with a condensate liquid pipeline which is communicated with an evaporator through a throttle valve, the evaporator is further provided with a circulating working medium channel which is communicated with the heat regenerator through a third compressor, and the heat regenerator is; the heat supply device and the second heat supply device are respectively communicated with the outside through a heated medium channel, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.

9. A single working medium combined cycle heat pump device is characterized in that in any one of the single working medium combined cycle heat pump devices 1-8, a newly added compressor and a newly added heat supplier are added, the communication between a circulating working medium channel of the compressor and the heat supplier is adjusted to be that the circulating working medium channel of the compressor is communicated with the newly added compressor through the newly added heat supplier, the circulating working medium channel of the newly added compressor is communicated with the heat supplier, and a heated medium channel of the newly added heat supplier is communicated with the outside to form the single working medium combined cycle heat pump device.

10. A single working medium combined cycle heat pump device is characterized in that in any one of the single working medium combined cycle heat pump devices 1-8, a newly added heat supply device and a newly added expansion machine are added, a circulating working medium channel of a compressor is communicated with the heat supply device and adjusted to be communicated with the new expansion machine through the newly added heat supply device, the circulating working medium channel of the compressor is communicated with the heat supply device, the newly added expansion machine is communicated with the heat supply device through the circulating working medium channel, the newly added expansion machine is connected with the compressor and transmits power, and a heated medium channel of the newly added heat supply device is communicated with the outside to form the single working medium combined cycle heat pump device.

11. A single-working medium combined cycle heat pump device is characterized in that in any one of the single-working medium combined cycle heat pump devices 1-4, a heated medium channel communicated with the outside by a second heat supply device is omitted, the communication between a circulating working medium of a heat regenerator and a compressor is adjusted to be that the circulating working medium of the heat regenerator is communicated with the compressor by the second heat supply device, and the single-working medium combined cycle heat pump device is formed.

12. A single-working medium combined cycle heat pump device is characterized in that in any one of the single-working medium combined cycle heat pump devices of items 5 to 8, a heated medium channel communicated with the outside by a second heat supply device is omitted, a circulating working medium of a heat regenerator is communicated with a compressor through a high-temperature heat regenerator and is adjusted to be communicated with the compressor through the second heat supply device and the high-temperature heat regenerator, and the circulating working medium of the heat regenerator is communicated with the compressor through the second heat supply device and the high-temperature heat regenerator to form the single-working medium combined cycle heat pump device.

13. A single working medium combined cycle heat pump device is characterized in that in any one of the single working medium combined cycle heat pump devices 1-12, an evaporator and a throttle valve are omitted, a low-temperature heat medium channel communicated with the outside of the evaporator is omitted, a circulating working medium channel of the evaporator is communicated with a heat regenerator through a third compressor, the evaporator is adjusted to be provided with a steam channel outside, the evaporator is communicated with the heat regenerator through the third compressor, a condensate pipeline of the heat regenerator is communicated with the evaporator through the throttle valve, the heat regenerator is adjusted to be provided with a condensate pipeline, and the condensate pipeline is communicated with the outside, so that the single working medium combined cycle heat pump device is formed.

14. A single-working medium combined cycle heat pump device is characterized in that in any one of the single-working medium combined cycle heat pump devices 1-12, a throttle valve is omitted, a turbine is added, a condensate pipeline of a heat regenerator is communicated with an evaporator through the throttle valve, the condensate pipeline of the heat regenerator is adjusted to be communicated with the evaporator through the turbine, and the turbine is connected with a compressor and transmits power to form the single-working medium combined cycle heat pump device.

Description of the drawings:

fig. 1 is a schematic diagram of a first principal thermodynamic system of a single-working-medium combined-cycle heat pump apparatus 1 according to the present invention.

Fig. 2 is a schematic thermodynamic system diagram of the 2 nd principle of a single-working-medium combined-cycle heat pump apparatus according to the present invention.

Fig. 3 is a schematic diagram of a 3 rd principle thermodynamic system of a single-working-medium combined-cycle heat pump apparatus according to the present invention.

Fig. 4 is a diagram of a 4 th principal thermodynamic system of a single-working-medium combined-cycle heat pump apparatus according to the present invention.

Fig. 5 is a diagram of a 5 th principal thermodynamic system of a single-working-medium combined-cycle heat pump apparatus according to the present invention.

Fig. 6 is a 6 th principle thermodynamic system diagram of a single-working-medium combined-cycle heat pump apparatus according to the present invention.

Fig. 7 is a diagram of a 7 th principal thermodynamic system of a single-working-medium combined-cycle heat pump apparatus according to the present invention.

Fig. 8 is a diagram of an 8 th principle thermodynamic system of a single-working-medium combined-cycle heat pump apparatus according to the present invention.

Fig. 9 is a diagram of a 9 th principal thermodynamic system of a single-working-medium combined-cycle heat pump apparatus according to the present invention.

Fig. 10 is a diagram of a 10 th principal thermodynamic system of a single-working-medium combined-cycle heat pump apparatus according to the present invention.

Fig. 11 is a diagram of a principal 11 th thermodynamic system of a single-working-medium combined-cycle heat pump apparatus according to the present invention.

In the figure, 1-compressor, 2-expander, 3-second compressor, 4-throttle valve, 5-third compressor, 6-heat supplier, 7-second heat supplier, 8-evaporator, 9-heat regenerator, 10-turbine, 11-third heat supplier, 12-spray pipe, 13-second heat regenerator, 14-reheater, 15-high temperature heat regenerator; a-newly adding a compressor, B-newly adding a heat supply device and C-newly adding an expansion machine.

The specific implementation mode is as follows:

it is to be noted that, in the description of the structure and the flow, the repetition is not necessary; obvious flow is not described. The invention is described in detail below with reference to the figures and examples.

The single-working-medium combined-cycle heat pump apparatus shown in fig. 1 is realized by:

(1) structurally, the heat recovery system mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator and a heat regenerator; the compressor 1 is divided into two paths after a circulating working medium channel is communicated with a heat supplier 6, wherein the first path is communicated with a heat regenerator 9 through a second heat supplier 7 and an expander 2, the second path is communicated with a second compressor 3, the heat regenerator 9 is communicated with a second compressor 3 through the circulating working medium channel, a condensate liquid pipeline is communicated with an evaporator 8 through a throttle valve 4, the evaporator 8 is also communicated with the heat regenerator 9 through a third compressor 5, and the heat regenerator 9 is also communicated with the compressor 1 through the circulating working medium channel; the heat supplier 6 and the second heat supplier 7 are also respectively communicated with the outside through heated medium channels, the evaporator 8 is also communicated with the outside through a low-temperature heat medium channel, and the expander 2 is connected with the compressor 1 and transmits power.

(2) In the process, the circulating working media discharged by the expander 2 and the third compressor 5 enter the heat regenerator 9 to absorb heat and raise temperature, and then enter the compressor 1 to raise the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the heat supplier 6 and releases heat, and then is divided into two paths, wherein the first path flows through the second heat supplier 7 and releases heat, flows through the expander 2 to reduce the pressure and do work and enters the heat regenerator 9, and the second path flows through the second compressor 3 to increase the pressure and the temperature, flows through the heat regenerator 9 to release heat and condense, flows through the throttle valve 4 to throttle and reduce the pressure and enters the evaporator 8; the circulating working medium entering the evaporator 8 absorbs heat and is vaporized, flows through the third compressor 5 to be boosted and heated, and then enters the heat regenerator 9; the heated medium obtains high-temperature heat load through the heat supplier 6 and the second heat supplier 7, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 8, the exterior and the expander 2 jointly provide power for the compressor 1, the second compressor 3 and the third compressor 5, and a single-working-medium combined cycle heat pump device is formed.

The single-working-medium combined-cycle heat pump apparatus shown in fig. 2 is realized by:

(1) structurally, in the single-working medium combined cycle heat pump device shown in fig. 1, a throttle valve is eliminated, a turbine is added, a condensed liquid pipeline of a heat regenerator 9 is communicated with an evaporator 8 through a throttle valve 4, the condensed liquid pipeline of the heat regenerator 9 is adjusted to be communicated with the evaporator 8 through a turbine 10, and the turbine 10 is connected with a compressor 1 and transmits power.

(2) In the process, the circulating working media discharged by the expander 2 and the third compressor 5 enter the heat regenerator 9 to absorb heat and raise temperature, and then enter the compressor 1 to raise the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the heat supply device 6 and releases heat, and then is divided into two paths, namely the first path flows through the second heat supply device 7 and releases heat, flows through the expansion machine 2 to do work by reducing pressure and enters the heat regenerator 9, and the second path flows through the second compressor 3 to increase the pressure and the temperature, flows through the heat regenerator 9 to release heat and condense, flows through the turbine 10 to do work by reducing pressure and enters the evaporator 8; the circulating working medium entering the evaporator 8 absorbs heat and is vaporized, flows through the third compressor 5 to be boosted and heated, and then enters the heat regenerator 9; the heated medium obtains high-temperature heat load through a heat supplier 6 and a second heat supplier 7, the low-temperature heat load is provided by the low-temperature heat medium through an evaporator 8, and the external part, the expander 2 and the turbine 10 jointly provide power for the compressor 1, the second compressor 3 and the third compressor 5, so that the single-working-medium combined cycle heat pump device is formed.

The single-working-medium combined-cycle heat pump apparatus shown in fig. 3 is realized by:

(1) structurally, the heat recovery system mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator and a third heat supplier; the compressor 1 is divided into two paths after a circulating working medium channel is communicated with a heat supplier 6, wherein the first path is communicated with a heat regenerator 9 through a second heat supplier 7 and an expander 2, the second path is communicated with a second compressor 3, the second compressor 3 is also communicated with the heat regenerator 9 through a third heat supplier 11, then the heat regenerator 9 is communicated with an evaporator 8 through a condensate liquid pipeline, the evaporator 8 is also communicated with the heat regenerator 9 through a throttle valve 4, the heat regenerator 9 is also communicated with the compressor 1 through a circulating working medium channel and a third compressor 5; the heat supply device 6, the second heat supply device 7 and the third heat supply device 11 are also respectively communicated with the outside through heated medium channels, the evaporator 8 is also communicated with the outside through a low-temperature heat medium channel, and the expander 2 is connected with the compressor 1 and transmits power.

(2) In the process, the circulating working media discharged by the expander 2 and the third compressor 5 enter the heat regenerator 9 to absorb heat and raise temperature, and then enter the compressor 1 to raise the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the heat supply device 6 and releases heat, and then is divided into two paths, namely the first path flows through the second heat supply device 7 and releases heat, flows through the expansion machine 2 to reduce the pressure and do work and enters the heat regenerator 9, the second path flows through the second compressor 3 to increase the pressure and the temperature, flows through the third heat supply device 11 and the heat regenerator 9 to gradually release heat and condense, flows through the throttle valve 4 to reduce the pressure and enters the evaporator 8; the circulating working medium entering the evaporator 8 absorbs heat and is vaporized, flows through the third compressor 5 to be boosted and heated, and then enters the heat regenerator 9; the heated medium obtains high-temperature heat load through the heat supplier 6, the second heat supplier 7 and the third heat supplier 11, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 8, and the exterior and the expander 2 jointly provide power for the compressor 1, the second compressor 3 and the third compressor 5, so that the single-working-medium combined cycle heat pump device is formed.

The single-working-medium combined-cycle heat pump apparatus shown in fig. 4 is realized by:

(1) structurally, the heat recovery system mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a spray pipe and a second heat regenerator; the compressor 1 is divided into two paths after a circulating working medium channel is communicated with a heat supply device 6, wherein the first path is communicated with the expander 2 through a second heat supply device 7, the second path is communicated with the second compressor 3, the second compressor 3 and the circulating working medium channel are communicated with a heat regenerator 9 through a second heat regenerator 13 and then divided into two paths, the first path is led out from the middle or the tail end of the heat regenerator 9, is communicated with the expander 2 through a spray pipe 12 and the second heat regenerator 13 and then is communicated with the expander through a middle air inlet port, the second path is led out from the tail end of the heat regenerator 9 and then is communicated with the evaporator 8 through a throttle valve 4, the evaporator 8 and the circulating working medium channel are communicated with the heat regenerator 9 through a third compressor 5, the expander 2 is also communicated with the heat regenerator 9, and the heat regenerator 9 is also communicated with the compressor 1; the heat supplier 6 and the second heat supplier 7 are also respectively communicated with the outside through heated medium channels, the evaporator 8 is also communicated with the outside through a low-temperature heat medium channel, and the expander 2 is connected with the compressor 1 and transmits power.

(2) In the process, the circulating working media discharged by the expander 2 and the third compressor 5 enter the heat regenerator 9 to absorb heat and raise temperature, and then enter the compressor 1 to raise the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the heat supply device 6 and releases heat, and then is divided into two paths, namely, the first path flows through the second heat supply device 7 and releases heat, flows through the expansion machine 2 and performs pressure reduction and work, and then enters the heat regenerator 9, the second path flows through the second compressor 3 and performs pressure rise and temperature rise, flows through the second heat regenerator 13 and releases heat, then enters the heat regenerator 9 to release heat, and is partially condensed or fully condensed and then divided into two paths, the first path flows through the spray pipe 12 and performs pressure reduction and speed increase, flows through the second heat regenerator 13 to absorb heat, enters the expansion machine 2 through the middle air inlet port to perform pressure reduction and work, and then enters the heat regenerator 9, and the second path of condensate or the condensate after continuous; the circulating working medium entering the evaporator 8 absorbs heat and is vaporized, flows through the third compressor 5 to be boosted and heated, and then enters the heat regenerator 9; the heated medium obtains high-temperature heat load through the heat supplier 6 and the second heat supplier 7, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 8, the exterior and the expander 2 jointly provide power for the compressor 1, the second compressor 3 and the third compressor 5, and a single-working-medium combined cycle heat pump device is formed.

The single-working-medium combined-cycle heat pump apparatus shown in fig. 5 is realized by:

(1) structurally, the system mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator and a reheater; the compressor 1 is divided into two paths after a circulating working medium channel is communicated with a heat supply device 6, wherein the first path is communicated with the expansion machine 2 through a second heat supply device 7, the expansion machine 2 is also provided with a circulating working medium channel which is communicated with the expansion machine 2 through a reheater 14, the expansion machine 2 is also provided with a circulating working medium channel which is communicated with a heat regenerator 9, the second path is communicated with the second compressor 3, the second compressor 3 is also provided with a circulating working medium channel which is communicated with the heat regenerator 9 through the reheater 14, then the heat regenerator 9 is provided with a condensate liquid pipeline which is communicated with an evaporator 8 through a throttle valve 4, the evaporator 8 is also provided with a circulating working medium channel which is communicated with the heat regenerator 9 through a third compressor 5, and the heat regenerator 9 is also provided; the heat supplier 6 and the second heat supplier 7 are also respectively communicated with the outside through heated medium channels, the evaporator 8 is also communicated with the outside through a low-temperature heat medium channel, and the expander 2 is connected with the compressor 1 and transmits power.

(2) In the process, the circulating working media discharged by the expander 2 and the third compressor 5 enter the heat regenerator 9 to absorb heat and raise temperature, and then enter the compressor 1 to raise the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the heat supply device 6 and releases heat, and then is divided into two paths, namely a first path flows through the second heat supply device 7 and releases heat, enters the expansion machine 2 to perform pressure reduction work to a certain degree, then flows through the reheater 14 to absorb heat, enters the expansion machine 2 to perform continuous pressure reduction work, and then enters the heat regenerator 9, a second path flows through the second compressor 3 to perform pressure increase and temperature increase, flows through the reheater 14 and the heat regenerator 9 to gradually release heat and condense, flows through the throttle valve 4 to perform throttling and pressure reduction, and then enters the evaporator 8; the circulating working medium entering the evaporator 8 absorbs heat and is vaporized, flows through the third compressor 5 to be boosted and heated, and then enters the heat regenerator 9; the heated medium obtains high-temperature heat load through the heat supplier 6 and the second heat supplier 7, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 8, the exterior and the expander 2 jointly provide power for the compressor 1, the second compressor 3 and the third compressor 5, and a single-working-medium combined cycle heat pump device is formed.

The single-working-medium combined-cycle heat pump apparatus shown in fig. 6 is realized by:

(1) structurally, the system mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator and a high-temperature heat regenerator; the compressor 1 is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator 15 through a heat supplier 6 and then divided into two paths, wherein the first path is communicated with a heat regenerator 9 through a second heat supplier 7 and an expander 2, the second path is communicated with a second compressor 3, the heat regenerator 9 is communicated with the heat regenerator 9 through a circulating working medium channel, then a condensate liquid pipeline of the heat regenerator 9 is communicated with an evaporator 8 through a throttle valve 4, the evaporator 8 is also provided with a circulating working medium channel which is communicated with the heat regenerator 9 through a third compressor 5, and the heat regenerator 9 is also provided with a circulating working medium channel which is communicated with the compressor 1 through the high-temperature heat regenerator 15; the heat supplier 6 and the second heat supplier 7 are also respectively communicated with the outside through heated medium channels, the evaporator 8 is also communicated with the outside through a low-temperature heat medium channel, and the expander 2 is connected with the compressor 1 and transmits power.

(2) In the process, the circulating working medium discharged by the expander 2 and the third compressor 5 enters the heat regenerator 9 to absorb heat and raise the temperature, flows through the high-temperature heat regenerator 15 to absorb heat, and then enters the compressor 1 to raise the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 passes through the heat supply device 6 and the high-temperature heat regenerator 15 to gradually release heat, and then is divided into two paths, namely a first path flows through the second heat supply device 7 to release heat, flows through the expansion machine 2 to reduce the pressure and do work and enters the heat regenerator 9, a second path flows through the second compressor 3 to increase the pressure and increase the temperature, flows through the heat regenerator 9 to release heat and condense, flows through the throttle valve 4 to reduce the pressure in a throttling way and enters the evaporator 8; the circulating working medium entering the evaporator 8 absorbs heat and is vaporized, flows through the third compressor 5 to be boosted and heated, and then enters the heat regenerator 9; the heated medium obtains high-temperature heat load through the heat supplier 6 and the second heat supplier 7, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 8, the exterior and the expander 2 jointly provide power for the compressor 1, the second compressor 3 and the third compressor 5, and a single-working-medium combined cycle heat pump device is formed.

The single-working-medium combined-cycle heat pump apparatus shown in fig. 7 is realized by:

(1) structurally, in the single-working medium combined cycle heat pump device shown in fig. 1, a newly added compressor and a newly added heat supplier are added, the communication between a circulating working medium channel of the compressor 1 and the heat supplier 6 is adjusted to be that the compressor 1 is communicated with the newly added compressor A through a circulating working medium channel B, the newly added compressor A is communicated with the heat supplier 6 through a circulating working medium channel, and the newly added heat supplier B is also communicated with the outside through a heated medium channel.

(2) In the process, the circulating working media discharged by the expander 2 and the third compressor 5 enter the heat regenerator 9 to absorb heat and raise temperature, and then enter the compressor 1 to raise the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the newly-added heat supply device B and releases heat, flows through the newly-added compressor A to increase the pressure and raise the temperature, flows through the heat supply device 6 and releases heat, and then is divided into two paths, wherein the first path flows through the second heat supply device 7 and releases heat, flows through the expansion machine 2 to reduce the pressure and do work and enters the heat regenerator 9, and the second path flows through the second compressor 3 to increase the pressure and raise the temperature, flows through the heat regenerator 9 to release heat and condense, flows through the throttle valve 4 to reduce the; the circulating working medium entering the evaporator 8 absorbs heat and is vaporized, flows through the third compressor 5 to be boosted and heated, and then enters the heat regenerator 9; the heated medium obtains high-temperature heat load through the heat supplier 6, the second heat supplier 7 and the newly-added heat supplier B, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 8, and the power is provided for the compressor 1, the second compressor 3, the third compressor 5 and the newly-added compressor A by the exterior and the expander 2 together, so that the single-working-medium combined cycle heat pump device is formed.

The single-working-medium combined-cycle heat pump apparatus shown in fig. 8 is realized by:

(1) structurally, in the single-working medium combined cycle heat pump device shown in fig. 1, a newly added heat supply device and a newly added expansion machine are added, a circulating working medium channel of a compressor 1 is communicated with a heat supply device 6 and adjusted to be that the compressor 1 is communicated with a circulating working medium channel through a newly added heat supply device B and a newly added expansion machine C, the newly added expansion machine C is communicated with the heat supply device 6 through a circulating working medium channel, the newly added expansion machine C is connected with the compressor 1 and transmits power, and the newly added heat supply device B is communicated with the outside through a heated medium channel.

(2) In the process, the circulating working media discharged by the expander 2 and the third compressor 5 enter the heat regenerator 9 to absorb heat and raise temperature, and then enter the compressor 1 to raise the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the newly-added heat supply device B and releases heat, flows through the newly-added expansion machine C and performs pressure reduction work, flows through the heat supply device 6 and releases heat, and then is divided into two paths, wherein the first path flows through the second heat supply device 7 and releases heat, flows through the expansion machine 2 and performs pressure reduction work and enters the heat regenerator 9, and the second path flows through the second compressor 3 and performs pressure increase and temperature increase, flows through the heat regenerator 9 for heat release and condensation, flows through the throttle valve 4 and performs throttling pressure reduction and enters the evaporator 8; the circulating working medium entering the evaporator 8 absorbs heat and is vaporized, flows through the third compressor 5 to be boosted and heated, and then enters the heat regenerator 9; the heated medium obtains high-temperature heat load through the heat supplier 6, the second heat supplier 7 and the newly-added heat supplier B, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 8, and the compressor 1, the second compressor 3 and the third compressor 5 are provided with power by the outside, the expander 2 and the newly-added expander C together, so that the single-working-medium combined cycle heat pump device is formed.

The single-working-medium combined-cycle heat pump apparatus shown in fig. 9 is realized by:

(1) structurally, in the single-working medium combined cycle heat pump device shown in fig. 6, a newly added compressor and a newly added heat supplier are added, the communication between the circulating working medium channel of the compressor 1 and the heat supplier 6 is adjusted to be that the compressor 1 is communicated with the newly added compressor a through the newly added heat supplier B, the newly added compressor a is communicated with the heat supplier 6 through the circulating working medium channel, and the newly added heat supplier B is communicated with the outside through the heated medium channel.

(2) In the process, the circulating working medium discharged by the expander 2 and the third compressor 5 enters the heat regenerator 9 to absorb heat and raise the temperature, flows through the high-temperature heat regenerator 15 to absorb heat, and then enters the compressor 1 to raise the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the newly-added heat supply device B and releases heat, flows through the newly-added compressor A and increases the pressure and the temperature, flows through the heat supply device 6 and the high-temperature heat regenerator 15 and gradually releases heat, and then is divided into two paths, wherein the first path flows through the second heat supply device 7 and releases heat, flows through the expansion machine 2 and reduces the pressure and does work and enters the heat regenerator 9, and the second path flows through the second compressor 3 and increases the pressure and the temperature, flows through the heat regenerator 9 and releases heat and condenses, flows through the throttle valve 4 and; the circulating working medium entering the evaporator 8 absorbs heat and is vaporized, flows through the third compressor 5 to be boosted and heated, and then enters the heat regenerator 9; the heated medium obtains high-temperature heat load through the heat supplier 6, the second heat supplier 7 and the newly-added heat supplier B, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 8, and the power is provided for the compressor 1, the second compressor 3, the third compressor 5 and the newly-added compressor A by the exterior and the expander 2 together, so that the single-working-medium combined cycle heat pump device is formed.

The single-working-medium combined-cycle heat pump apparatus shown in fig. 10 is realized by:

in the single-working medium combined cycle heat pump device shown in fig. 1, a heated medium channel communicated with the outside by a second heat supply device 7 is eliminated, and the communication between a circulating working medium in a heat regenerator 9 and a compressor 1 is adjusted to be that the circulating working medium in the heat regenerator 9 is communicated with the compressor 1 through the second heat supply device 7; the circulating working medium discharged by the heat regenerator 9 flows through the second heat supplier 7 to absorb heat and raise temperature, and then enters the compressor 1 to raise pressure and raise temperature, so as to form the single-working-medium combined cycle heat pump device.

The single-working-medium combined-cycle heat pump apparatus shown in fig. 11 is realized by:

(1) structurally, in the single-working-medium combined cycle heat pump device shown in fig. 1, an evaporator and a throttle valve are eliminated, a low-temperature heat medium channel for communicating the evaporator 8 with the outside is eliminated, the evaporator 8 is communicated with a heat regenerator 9 through a third compressor 5 and adjusted to have a steam channel outside and communicated with the heat regenerator 9 through the third compressor 5, and a condensate pipeline of the heat regenerator 9 is communicated with the evaporator 8 through the throttle valve 4 and adjusted to have a condensate pipeline of the heat regenerator 9 communicated with the outside.

(2) In the flow, the circulating working medium in the external steam state flows through the third compressor 5 to be boosted and heated and then enters the heat regenerator 9, the circulating working medium discharged by the expander 2 enters the heat regenerator 9, and the two paths of circulating working media absorb heat and are heated and then enter the compressor 1 to be boosted and heated; the circulating working medium discharged by the compressor 1 flows through the heat supply device 6 and releases heat, and then is divided into two paths, wherein the first path flows through the second heat supply device 7 to release heat, flows through the expansion machine 2 to reduce the pressure and do work and enters the heat regenerator 9, and the second path flows through the second compressor 3 to increase the pressure and the temperature, flows through the heat regenerator 9 to release heat and condense and is discharged outwards; the heated medium obtains high-temperature heat load through the heat supplier 6 and the second heat supplier 7, external steam provides low-temperature heat load through the inlet and outlet flow, and the outside and the expander 2 jointly provide power for the compressor 1, the second compressor 3 and the third compressor 5, so that the single-working-medium combined cycle heat pump device is formed.

The effect that the technology of the invention can realize-the single-working medium combined cycle heat pump device provided by the invention has the following effects and advantages:

(1) basic technologies for mechanical energy refrigeration and heating utilization (energy difference utilization) are provided.

(2) The heat supply load in the phase change heat release process is eliminated or greatly reduced, the heat supply load of a high-temperature heat supply section is relatively increased, and the performance index of the device is improved.

(3) The adverse effect of condensate sensible heat on obtaining low-temperature heat load is eliminated, and the performance index of the device is improved.

(4) Greatly improving the utilization degree of the sensible heat of the condensate, being beneficial to reducing the compression ratio and improving the performance index of the device.

(5) The working parameter range is greatly expanded, and high-efficiency heat supply and high-efficiency high-temperature heat supply are realized.

(6) The working pressure is reduced, and the safety of the device is improved.

(7) The single working medium is beneficial to production and storage; reduce the running cost and improve the flexibility of circulation regulation

(8) In the high temperature area or the variable temperature area, the temperature difference heat transfer loss of the heat release link is reduced, and the performance index is improved.

(9) And a low-pressure operation mode is adopted in a high-temperature heat supply area, so that the contradiction between the performance index, the circulating medium parameter and the pressure and temperature resistance of the pipe in the traditional refrigeration and heat pump device is relieved or solved.

(10) The application range is wide, the energy supply requirement can be well met, and the working medium and the working parameters are flexibly matched.

(11) The thermodynamic cycle range of the mechanical energy for efficiently utilizing cold/heat is expanded, and the efficient utilization of the mechanical energy in the fields of refrigeration, high-temperature heat supply and variable-temperature heat supply is favorably realized.

Claims (14)

1. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator and a heat regenerator; the compressor (1) is provided with a circulating working medium channel which is communicated with the heat supplier (6) and then divided into two paths, wherein the first path is communicated with the heat regenerator (9) through the second heat supplier (7) and the expander (2), the second path is communicated with the second compressor (3), the heat regenerator (9) is further provided with a condensate pipeline which is communicated with the evaporator (8) through the throttle valve (4) after the second compressor (3) is also communicated with the heat regenerator (9), the evaporator (8) is also provided with a circulating working medium channel which is communicated with the heat regenerator (9) through the third compressor (5), and the heat regenerator (9) is also provided with a circulating working medium channel which is communicated with the compressor (1); the heat supply device (6) and the second heat supply device (7) are also respectively communicated with the outside through a heated medium channel, the evaporator (8) is also communicated with the outside through a low-temperature heat medium channel, and the expander (2) is connected with the compressor (1) and transmits power to form the single-working-medium combined cycle heat pump device.

2. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator and a third heat supplier; the compressor (1) is provided with a circulating working medium channel which is communicated with the heat supplier (6) and then divided into two paths, wherein the first path is communicated with the heat regenerator (9) through the second heat supplier (7) and the expander (2), the second path is communicated with the second compressor (3), the circulating working medium channel of the second compressor (3) is communicated with the heat regenerator (9) through the third heat supplier (11), then the condenser pipeline of the heat regenerator (9) is communicated with the evaporator (8) through the throttle valve (4), the circulating working medium channel of the evaporator (8) is communicated with the heat regenerator (9) through the third compressor (5), and the circulating working medium channel of the heat regenerator (9) is communicated with the compressor (1); the heat supply device (6), the second heat supply device (7) and the third heat supply device (11) are respectively communicated with the outside through a heated medium channel, the evaporator (8) is also communicated with the outside through a low-temperature heat medium channel, and the expander (2) is connected with the compressor (1) and transmits power to form the single-working-medium combined cycle heat pump device.

3. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a spray pipe and a second heat regenerator; the compressor (1) is provided with a circulating working medium channel which is communicated with a heat supply device (6) and then divided into two paths, wherein the first path is communicated with the expander (2) through a second heat supply device (7), the second path is communicated with the second compressor (3), the circulating working medium channel of the second compressor (3) is communicated with the heat regenerator (9) through a second heat regenerator (13) and then divided into two paths, the first path is led out from the middle or the tail end of the heat regenerator (9), is communicated with the expander (2) through a middle air inlet port after passing through a spray pipe (12) and the second heat regenerator (13), the second path is led out from the tail end of the heat regenerator (9) and is communicated with the evaporator (8) through a throttle valve (4), the evaporator (8) is also provided with a circulating working medium channel which is communicated with the heat regenerator (9) through a third compressor (5), the expander (2) is also provided with the heat regenerator (9), and the heat regenerator (9) is also provided with a circulating working medium channel which is communicated with the compressor; the heat supply device (6) and the second heat supply device (7) are also respectively communicated with the outside through a heated medium channel, the evaporator (8) is also communicated with the outside through a low-temperature heat medium channel, and the expander (2) is connected with the compressor (1) and transmits power to form the single-working-medium combined cycle heat pump device.

4. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator and a reheater; the compressor (1) is provided with a circulating working medium channel which is communicated with a heat supplier (6) and then divided into two paths, wherein the first path is communicated with the expander (2) through a second heat supplier (7), the expander (2) is also provided with a circulating working medium channel which is communicated with the expander (2) through a reheater (14), the expander (2) is also provided with a circulating working medium channel which is communicated with a reheater (9), the second path is communicated with the second compressor (3), the reheater (9) is further provided with a condensate liquid pipeline which is communicated with the evaporator (8) through a throttle valve (4) after the circulating working medium channel of the second compressor (3) is communicated with the reheater (9) through the reheater (14), the evaporator (8) is also provided with a circulating working medium channel which is communicated with the reheater (9) through a third compressor (5), and the reheater (9) is also provided with a circulating working medium channel which is communicated with the; the heat supply device (6) and the second heat supply device (7) are also respectively communicated with the outside through a heated medium channel, the evaporator (8) is also communicated with the outside through a low-temperature heat medium channel, and the expander (2) is connected with the compressor (1) and transmits power to form the single-working-medium combined cycle heat pump device.

5. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator and a high-temperature heat regenerator; the compressor (1) is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator (15) through a heat supplier (6) and then divided into two paths, wherein the first path is communicated with the heat regenerator (9) through a second heat supplier (7) and an expander (2), the second path is communicated with a second compressor (3), the second compressor (3) is also provided with a circulating working medium channel which is communicated with the heat regenerator (9), then the heat regenerator (9) is further provided with a condensate pipeline which is communicated with an evaporator (8) through a throttle valve (4), the evaporator (8) is also provided with a circulating working medium channel which is communicated with the heat regenerator (9) through a third compressor (5), and the heat regenerator (9) is also provided with a circulating working medium channel which is communicated with the compressor (1) through the high-temperature heat regenerator (15); the heat supply device (6) and the second heat supply device (7) are also respectively communicated with the outside through a heated medium channel, the evaporator (8) is also communicated with the outside through a low-temperature heat medium channel, and the expander (2) is connected with the compressor (1) and transmits power to form the single-working-medium combined cycle heat pump device.

6. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a third heat supplier and a high-temperature heat regenerator; the compressor (1) is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator (15) through a heat supplier (6) and then divided into two paths, wherein the first path is communicated with the heat regenerator (9) through a second heat supplier (7) and an expander (2), the second path is communicated with a second compressor (3), the second compressor (3) is also provided with a circulating working medium channel which is communicated with the heat regenerator (9) through a third heat supplier (11), then the heat regenerator (9) is further provided with a condensate liquid pipeline which is communicated with an evaporator (8) through a throttle valve (4), the evaporator (8) is further provided with a circulating working medium channel which is communicated with the heat regenerator (9) through a third compressor (5), and the heat regenerator (9) is further provided with a circulating working medium channel which is communicated with the compressor (1) through the high-temperature heat regenerator (; the heat supply device (6), the second heat supply device (7) and the third heat supply device (11) are respectively communicated with the outside through a heated medium channel, the evaporator (8) is also communicated with the outside through a low-temperature heat medium channel, and the expander (2) is connected with the compressor (1) and transmits power to form the single-working-medium combined cycle heat pump device.

7. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a spray pipe, a second heat regenerator and a high-temperature heat regenerator; the compressor (1) is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator (15) through a heat supply device (6) and then divided into two paths, the first path is communicated with the expander (2) through a second heat supply device (7), the second path is communicated with the second compressor (3), the circulating working medium channel of the second compressor (3) is communicated with the heat regenerator (9) through a second heat regenerator (13) and then divided into two paths, the first path is led out from the middle or the tail end of the heat regenerator (9), passes through a spray pipe (12) and the second heat regenerator (13) and then is communicated with the expander (2) through a middle air inlet port, the second path is led out from the tail end of the heat regenerator (9) and then is communicated with the evaporator (8) through a throttle valve (4), the evaporator (8) is also provided with a circulating working medium channel which is communicated with the heat regenerator (9) through a third compressor (5), and the expander (2) is also provided with the heat regenerator (9, the heat regenerator (9) is also provided with a circulating working medium channel which is communicated with the compressor (1) through a high-temperature heat regenerator (15); the heat supply device (6) and the second heat supply device (7) are also respectively communicated with the outside through a heated medium channel, the evaporator (8) is also communicated with the outside through a low-temperature heat medium channel, and the expander (2) is connected with the compressor (1) and transmits power to form the single-working-medium combined cycle heat pump device.

8. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a third compressor, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a reheater and a high-temperature heat regenerator; the compressor (1) is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator (15) through a heat supplier (6) and then divided into two paths, wherein the first path is communicated with the expander (2) through a second heat supplier (7), the expander (2) is also provided with a circulating working medium channel which is communicated with the expander (2) through a reheater (14), the expander (2) is also provided with a circulating working medium channel which is communicated with the heat regenerator (9), the second path is communicated with a second compressor (3), the second compressor (3) is also provided with a circulating working medium channel which is communicated with a heat regenerator (9) through a reheater (14), then the heat regenerator (9) is communicated with an evaporator (8) through a condensate liquid pipeline through a throttle valve (4), the evaporator (8) is also provided with a circulating working medium channel which is communicated with the heat regenerator (9) through a third compressor (5), and the heat regenerator (9) is also provided with a circulating working medium channel which is communicated with the compressor (1) through a high-temperature heat regenerator (15); the heat supply device (6) and the second heat supply device (7) are also respectively communicated with the outside through a heated medium channel, the evaporator (8) is also communicated with the outside through a low-temperature heat medium channel, and the expander (2) is connected with the compressor (1) and transmits power to form the single-working-medium combined cycle heat pump device.

9. A single working medium combined cycle heat pump device is characterized in that any one of the single working medium combined cycle heat pump devices in claims 1-8 is additionally provided with a newly-added compressor and a newly-added heat supplier, the communication between the compressor (1) and the heat supplier (6) is adjusted to be that the compressor (1) is provided with a circulating working medium channel which is communicated with the newly-added compressor (A) through the newly-added heat supplier (B), the newly-added compressor (A) is provided with a circulating working medium channel which is communicated with the heat supplier (6), and the newly-added heat supplier (B) is also provided with a heated medium channel which is communicated with the outside, so that the single working medium combined cycle heat pump device is formed.

10. A single working medium combined cycle heat pump device is characterized in that in any one of the single working medium combined cycle heat pump devices in claims 1-8, a newly added heat supply device and a new expansion machine are added, a circulating working medium channel of a compressor (1) is communicated with a heat supply device (6) and adjusted to be communicated with a circulating working medium channel of the compressor (1) through the newly added heat supply device (B) and a new expansion machine (C), the new expansion machine (C) is communicated with the heat supply device (6) through a circulating working medium channel, the new expansion machine (C) is connected with the compressor (1) and transmits power, and a heated medium channel of the newly added heat supply device (B) is communicated with the outside to form the single working medium combined cycle heat pump device.

11. A single working medium combined cycle heat pump device is characterized in that in any one of the single working medium combined cycle heat pump devices in claims 1 to 4, a heated medium channel of a second heat supply device (7) communicated with the outside is eliminated, the communication between a circulating working medium of a heat regenerator (9) and a compressor (1) is adjusted to be that the circulating working medium of the heat regenerator (9) is communicated with the compressor (1) through the second heat supply device (7), and the single working medium combined cycle heat pump device is formed.

12. A single-working medium combined cycle heat pump device is characterized in that in any one of the single-working medium combined cycle heat pump devices in claims 5 to 8, a heated medium channel of a second heat supply device (7) communicated with the outside is eliminated, a heat regenerator (9) is communicated with a compressor (1) through a high-temperature heat regenerator (15) and adjusted to be that the heat regenerator (9) is communicated with the compressor (1) through the second heat supply device (7) and the high-temperature heat regenerator (15), and the single-working medium combined cycle heat pump device is formed.

13. A single-working medium combined cycle heat pump device is characterized in that in any one of the single-working medium combined cycle heat pump devices of claims 1 to 12, an evaporator and a throttle valve are eliminated, a low-temperature heat medium channel communicated with the outside of the evaporator (8) is eliminated, the evaporator (8) is provided with a cycle working medium channel which is communicated with a heat regenerator (9) through a third compressor (5) and is adjusted to be provided with a steam channel at the outside and is communicated with the heat regenerator (9) through the third compressor (5), a condensing liquid pipeline of the heat regenerator (9) is communicated with the evaporator (8) through the throttle valve (4) and is adjusted to be provided with a condensing liquid pipeline of the heat regenerator (9) and is communicated with the outside, and the single-working medium combined cycle heat pump device is formed.

14. A single working medium combined cycle heat pump device is characterized in that in any one of the single working medium combined cycle heat pump devices of claims 1-12, a throttle valve is eliminated, a turbine is added, a condenser pipe of a regenerator (9) is communicated with an evaporator (8) through a throttle valve (4) and is adjusted to be communicated with the evaporator (8) through a turbine (10), the turbine (10) is connected with a compressor (1) and transmits power, and the single working medium combined cycle heat pump device is formed.

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