Heat pump system coupled with natural gas compressor for heat supply

Abstract

The invention relates to the technical field of evaporators, in particular to a heat pump system coupled with a natural gas compressor for heating, which comprises a mounting rack and an evaporator mounted on the mounting rack, the evaporator comprises a shell and shell covers mounted at two ends of the shell, a condensing agent injection pipe is fixedly arranged at the bottom of the shell, and a mist discharge pipe is fixedly arranged at the top of the shell; a liquid inlet assembly and a liquid outlet assembly are arranged in the shell, the liquid inlet assembly is arranged above the liquid outlet assembly, and the liquid inlet assembly communicates with the liquid outlet assembly through two spiral heat exchange assemblies. The spiral heat exchanger has the beneficial effects that by utilizing axial rotation and axial reciprocating sliding of the spiral blades, a condensing agent is promoted to generate a complex flowing path in the shell, strong disturbance is formed, the heat transfer uniformity is improved, the local overheating or supercooling phenomenon is avoided, the heat resistance is reduced, and the heat transfer efficiency is improved. And meanwhile, flowing of the condensing agent has a certain scouring effect on the heat exchange surface, and dirt can be effectively prevented from being deposited on the surfaces and the inner walls of the spiral blades.

Description

Technical Field

[0001] The invention relates to the technical field of evaporators, in particular to a heat pump system coupled with a natural gas compressor for heating. Background Art

[0002] The heat pump system coupled with natural gas compressor heating is a highly efficient energy utilization system, which recovers the heat generated during the operation of the natural gas compressor and uses it for heating the heat pump system.

[0003] The core device of the heat pump system is: Evaporator: It is a component in the heat pump system that absorbs heat from the low-temperature heat source, changing the working fluid from liquid to gas. In this system, the evaporator can absorb the heat transferred from the heat recovery device or obtain additional heat from the environment.

[0004] Compressor: compresses the gaseous working fluid coming out of the evaporator, increases its pressure and temperature, and provides power for the subsequent heating process.

[0005] Condenser: The high-temperature and high-pressure gaseous working fluid is condensed and released in the condenser, and the heat is released to the medium that needs heating, such as hot water, heating, etc., to achieve the heating function.

[0006] Throttle valve: Located between the condenser and the evaporator, it throttles and reduces the pressure of the high-pressure liquid working medium after condensation in the condenser, so that it can evaporate and absorb heat smoothly in the evaporator to complete the heat pump cycle.

[0007] The evaporator plays a vital role in the heat pump system.

[0008] An evaporator is disclosed in Chinese patent publication number CN118423899B. When the evaporator is in use, the medium passes through the heat exchange tubes, and its heat is transferred to the condensing agent inside the shell by the heat exchange tubes. The condensing agent evaporates by the heat to generate steam, and then the steam is discharged through the steam outlet pipe.

[0009] However, compared with the prior art in the related field, the existing evaporator has the following shortcomings: Limited heat transfer efficiency: The surface area of ​​the straight heat exchange tube is relatively small, and the contact area with the condenser is limited, resulting in a narrow heat transfer area, which limits the further improvement of the heat transfer efficiency and constrains the cooling or heating capacity of the heat pump unit to a certain extent.

[0010] Uneven mass transfer: In straight heat exchange tubes, the flow of condensate and feed liquid is relatively smooth, lacking sufficient disturbance, which can easily lead to uneven temperature and concentration distribution, resulting in local overheating or overcooling, increasing thermal resistance, affecting mass transfer effects, and thus reducing the overall performance of the heat pump unit.

[0011] Scaling problem is serious: the condensing agent and the liquid have a weak flushing effect on the surface of the heat exchange tube during the flow process, and the scale is easily deposited on the surface of the heat exchange tube. As time goes by, the scale will gradually thicken, resulting in a significant decrease in heat transfer performance, increased energy consumption and operating costs, and also shortening the service life of the evaporator.

[0012] Higher risk of blockage: The flow of liquid inside the straight heat exchange tube is relatively smooth, and the carrying capacity of solid particles or sticky substances in the liquid is limited. These substances are easy to accumulate in the narrow channels or corners inside the heat exchange tube, increasing the risk of liquid blocking the heat exchange tube. Once blockage occurs, it will affect the normal operation of the heat pump unit and may even cause equipment failure. Summary of the invention

[0013] The purpose of the present invention is to overcome the shortcomings of the prior art, solve the problems mentioned in the background technology, and provide a heat pump system coupled with a natural gas compressor for heating.

[0014] The objective of the present invention is achieved through the following technical scheme: a heat pump system coupled with a natural gas compressor for heating, comprising a mounting frame and an evaporator, a compressor, a condenser, a throttle valve, an oil separator and a control cabinet mounted on the mounting frame, the evaporator comprising a shell and a shell cover mounted at both ends of the shell, a condensing agent injection pipe is fixedly provided at the bottom of the shell, and a mist exhaust pipe is fixedly provided at the top of the shell; a liquid inlet assembly and a liquid outlet assembly are provided inside the shell, the liquid inlet assembly is arranged above the liquid outlet assembly, the liquid inlet assembly and the liquid outlet assembly are connected through two spiral heat exchange assemblies, the spiral heat exchange assembly is arranged near the bottom of the evaporator, a driving assembly for controlling the rotation of the spiral heat exchange assembly is provided inside the evaporator, a touch assembly is provided on one side of the spiral heat exchange assembly close to the driving assembly, and a partition is fixedly provided on the shell between the two spiral heat exchange assemblies; when the spiral heat exchange assembly rotates, the touch assembly causes the spiral heat exchange assembly to slide back and forth axially while rotating circumferentially, thereby promoting the condensing agent to produce a complex flow path in the shell and increasing the contact opportunity and contact time between the feed liquid and the wall of the spiral heat exchange assembly.

[0015] Furthermore, the liquid inlet assembly includes a main liquid inlet pipe fixedly installed inside the shell, and two liquid inlet branches are fixedly installed at one end of the main liquid inlet pipe close to the driving assembly, and the two liquid inlet branches are both L-shaped.

[0016] Furthermore, the liquid outlet component includes a main liquid outlet pipe fixedly installed inside the shell, and liquid outlet branches are fixedly installed at positions of the main liquid outlet pipe corresponding to the two spiral heat exchange components.

[0017] Furthermore, the spiral heat exchange component includes multiple spiral blades, both ends of the multiple spiral blades are fixedly installed with a first cavity, the two first cavities are fixedly installed with a second cavity through an elastic hose, and the center of the second cavity is fixedly installed with a connecting pipe, the connecting pipe on the side close to the liquid inlet branch pipe is rotatably matched with the liquid inlet branch pipe, and the connecting pipe on the side close to the liquid outlet branch pipe is rotatably matched with the liquid outlet branch pipe.

[0018] Furthermore, the driving assembly includes an installation box fixedly installed inside the shell, a motor is fixedly installed inside the installation box, a driving gear is fixedly installed on the output end of the motor, two connecting tubes close to one side of the installation box are rotatably matched with the installation box, and the outer surfaces of two adjacent connecting tubes located inside the installation box are fixedly installed with synchronous gears, the two synchronous gears are meshed with each other, and the driving gear is meshed with one of the synchronous gears.

[0019] Furthermore, a sealing box cover is fixedly installed at the opening of the installation box, and rotation holes are opened at positions of the installation box corresponding to the two connecting pipes, and the connecting pipes are connected to the rotation holes through sealing bearings.

[0020] Furthermore, the liquid inlet branch pipe is inserted into the interior of the connecting pipe, and the connecting pipe close to the liquid inlet branch pipe is connected to the liquid inlet branch pipe through a sealing bearing, and the end of the liquid outlet branch pipe is sleeved on the outer surface of the connecting pipe, and the connecting pipe close to the liquid outlet branch pipe is connected to the liquid outlet branch pipe through a sealing bearing.

[0021] Furthermore, the trigger assembly includes a plurality of accommodating holes opened on the outside of the installation box, a plurality of trigger rods are fixedly installed on the first cavity close to one side of the installation box, and a ball is provided on one end of the plurality of trigger rods close to the installation box.

[0022] Furthermore, the number of accommodating holes is twice the number of trigger rods, and the accommodating holes are adapted to the balls. When the balls enter the accommodating holes, the elastic hose close to one side of the mounting box contracts, and the spiral blade moves accordingly. At this time, the elastic hose connected to the other end of the spiral blade will open. When the balls contact the outer surface of the mounting box, the elastic hose close to one side of the mounting box opens, and the spiral blade moves accordingly. At this time, the elastic hose connected to the other end of the spiral blade will contract, thereby realizing axial reciprocating sliding of the spiral heat exchange component.

[0023] Furthermore, the mist exhaust pipe is connected to the compressor, the condensing agent injection pipe is connected to the throttle valve, and the throttle valve is used to inject the condensing agent inside the condenser from the condensing agent injection pipe into the interior of the shell.

[0024] The beneficial effects of the present invention are as follows: by arranging a liquid inlet assembly, a liquid outlet assembly, a spiral heat exchange assembly, a driving assembly and a touch assembly, firstly, the surface area of ​​the spiral blade-shaped heat exchange tube is significantly increased compared with the straight heat exchange tube, which increases the contact area between the condensing agent and the spiral blade, provides a wider place for heat transfer, and improves the overall heat exchange efficiency of the evaporator; secondly, by utilizing the axial rotation and axial reciprocating sliding of the spiral blade, on the one hand, the condensing agent is prompted to generate a complex flow path in the shell, forming a strong disturbance, which makes the temperature and concentration distribution of the condensing agent more uniform, avoiding local overheating or overcooling. It reduces thermal resistance and further strengthens the heat transfer process. On the other hand, it increases the contact opportunities and contact time between the medium and the wall of the spiral blade, which enables the heat of the medium to be more fully transferred to various parts of the spiral blade, optimizes the heat transfer path, reduces heat transfer dead corners, and improves the uniformity of heat transfer. Thirdly, by utilizing the circumferential rotation and axial reciprocating sliding of the spiral blade, on the one hand, the flow of the condensate has a certain flushing effect on the heat exchange surface, which can effectively prevent the deposition of dirt on the surface of the spiral blade. On the other hand, it enables the medium to have a certain flushing effect on the inside of the spiral blade, which can prevent the deposition of dirt on the inner wall of the spiral blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is a schematic diagram of the overall structure of the heat pump system of the present invention; Figure 2 It is a structural schematic diagram of the evaporator of the present invention; Figure 3 It is a schematic diagram of the internal structure of the housing of the present invention; Figure 4 is a schematic diagram of the flow trajectory of the condensing agent of the present invention; Figure 5 It is a structural schematic diagram of the liquid inlet component and the liquid outlet component of the present invention; Figure 6 It is a schematic diagram of the internal structure of the installation box of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the structure enlargement at the center A; Figure 8 It is a partial cross-sectional schematic diagram of the installation box and the liquid outlet branch pipe of the present invention; Fig. 9 For the present invention Figure 8A schematic diagram of the structure enlarged at B in the middle; Fig.10 It is a schematic diagram of the structure of the spiral heat exchange component of the present invention.

[0027] In the figure: 1, mounting frame; 2, evaporator; 201, shell; 2011, partition; 202, shell cover; 203, condensing agent injection pipe; 204, exhaust pipe; 3, compressor; 4, condenser; 5, throttle valve; 6, liquid inlet assembly; 601, main liquid inlet pipe; 602, liquid inlet branch pipe; 7, liquid outlet assembly; 701, main liquid outlet pipe; 702, liquid outlet branch pipe; 8, spiral heat exchange assembly; 801, spiral blade; 802, first cavity; 803, elastic hose; 804, second cavity; 805, connecting pipe; 9, driving assembly; 901, mounting box; 9011, sealing box cover; 902, motor; 903, driving gear; 904, synchronous gear; 10, trigger assembly; 1001, receiving hole; 1002, trigger rod; 1003, ball; 11, oil separator; 12, control cabinet. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Additional aspects and advantages of the present invention will be further given in the following description in conjunction with the accompanying drawings, and in part will become apparent from the following description, or may be learned through practice of the present invention.

[0030] An embodiment of a heat pump system coupled with a natural gas compressor for heating of the present invention is as follows: Figures 1 to 10As shown, it includes a mounting frame 1 and an evaporator 2, a compressor 3, a condenser 4, a throttle valve 5, an oil separator 11 and a control cabinet 12 installed on the mounting frame 1. The evaporator 2 includes a shell 201 and a shell cover 202 installed at both ends of the shell 201. A condensing agent injection pipe 203 is fixedly provided at the bottom of the shell 201, and a demisting pipe 204 is fixedly provided at the top of the shell 201. The demisting pipe 204 is connected to the compressor 3, and the condensing agent injection pipe 203 is connected to the throttle valve 5. The throttle valve 5 is used to inject the condensing agent inside the condenser 4 from the condensing agent injection pipe 203 into the shell 201; a liquid inlet component 6 and a liquid outlet component 7 are provided inside the shell 201. The liquid inlet component 6 is arranged above the liquid outlet component 7, and the liquid inlet component 6 and the liquid outlet component 7 are connected by two spiral exchangers. The heat components 8 are interconnected, and the spiral heat exchange component 8 is arranged near the bottom of the evaporator 2. A driving component 9 for controlling the rotation of the spiral heat exchange component 8 is arranged inside the evaporator 2. A touch component 10 is arranged on the side of the spiral heat exchange component 8 close to the driving component 9. The shell 201 is located between the two spiral heat exchange components 8 and is fixed with a partition 2011. When the spiral heat exchange component 8 rotates, the touch component 10 causes the spiral heat exchange component 8 to slide axially while rotating circumferentially, thereby causing the condensing agent to produce a complex flow path in the shell 201 and form a strong disturbance. This disturbance makes the temperature and concentration distribution of the condensing agent more uniform, and increases the contact opportunity and contact time between the feed liquid and the wall of the spiral heat exchange component 8, thereby optimizing the heat transfer path and reducing the heat transfer dead angle.

[0031] like Figure 1 , Figure 2 and Fig.10 As shown, the liquid inlet component 6 includes a main liquid inlet pipe 601 fixedly installed inside the shell 201, and two liquid inlet branches 602 are fixedly installed at one end of the main liquid inlet pipe 601 close to the driving component 9, and the shape of the two liquid inlet branches 602 is L-shaped; the liquid outlet component 7 includes a main liquid outlet pipe 701 fixedly installed inside the shell 201, and the positions of the main liquid outlet pipe 701 corresponding to the two spiral heat exchange components 8 are fixedly installed with liquid outlet branches 702. When working, the medium generated during the operation of the natural gas compressor is injected into the main liquid inlet pipe 601, and then the main liquid inlet pipe 601 will divert the medium from the two liquid inlet branches 602 to the inside of the two spiral heat exchange components 8, and then be discharged through the main liquid outlet pipe 701.

[0032] like Figures 8 to 10As shown, the spiral heat exchange component 8 includes a plurality of spiral blades 801, both ends of the plurality of spiral blades 801 are fixedly installed with a first cavity 802, the two first cavities 802 are fixedly installed with a second cavity 804 through an elastic hose 803, and the center of the second cavity 804 is fixedly installed with a connecting pipe 805, the connecting pipe 805 on the side close to the liquid inlet branch pipe 602 is rotatably matched with the liquid inlet branch pipe 602, and the connecting pipe 805 on the side close to the liquid outlet branch pipe 702 is rotatably matched with the liquid outlet branch pipe 702, and the medium will enter the interior of the plurality of spiral blades 801 through the connecting pipe 805, the second cavity 804 and the first cavity 802 in turn, and then enter the liquid outlet branch pipe 702 through the first cavity 802, the second cavity 804 and the connecting pipe 805 in turn, and then be discharged through the main liquid outlet pipe 701, as shown in FIG. Figure 4 and Fig.10 As shown, when the spiral heat exchange component 8 rotates, one group of spiral blades 801 will push the condensing agent from one side of the installation box 901 to one side of the liquid outlet branch pipe 702 to form a vortex, and then the other group of spiral blades 801 will push the condensing agent from one side of the liquid outlet branch pipe 702 to one side of the installation box 901 to form a vortex, thereby realizing the circulation of the condensing agent inside the shell 201.

[0033] like Figure 4 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the driving component 9 includes an installation box 901 fixedly installed inside the shell 201, a motor 902 is fixedly installed inside the installation box 901, a driving gear 903 is fixedly installed on the output end of the motor 902, two connecting pipes 805 close to one side of the installation box 901 rotate with the installation box 901, and the outer surfaces of the two adjacent connecting pipes 805 located inside the installation box 901 are fixedly installed with synchronous gears 904, the two synchronous gears 904 are meshed, and the driving gear 903 is meshed with one of the synchronous gears 904. By starting the motor 902, the motor 902 drives one of the synchronous gears 904 through the driving gear 903, and then the two synchronous gears 904 are meshed, so that the two spiral heat exchange components 8 rotate in opposite directions.

[0034] like Figure 4 , Figure 7 , Figure 8 , Fig. 9 and Fig.10As shown, a sealing box cover 9011 is fixedly installed at the opening of the installation box 901, and rotating holes are opened at the positions of the installation box 901 corresponding to the two connecting pipes 805. The connecting pipes 805 are connected to the rotating holes through sealing bearings. The provided sealing bearings can reduce the friction force of the connecting pipes 805 during rotation, improve the stability of the connecting pipes 805 during rotation, and prevent the condensing agent from entering the interior of the installation box 901; the liquid inlet branch pipe 602 is inserted into the interior of the connecting pipe 805, and the connecting pipe 805 close to the side of the liquid inlet branch pipe 602 is connected to the liquid inlet branch pipe 602 through a sealing bearing, and the end of the liquid outlet branch pipe 702 is sleeved on the outer surface of the connecting pipe 805, and the connecting pipe 805 close to the side of the liquid outlet branch pipe 702 is connected to the liquid outlet branch pipe 702 through a sealing bearing. The provided sealing bearings can prevent the medium from leaking during transmission, effectively improving the stability of the device during operation.

[0035] like Figures 8 to 10 As shown, the touch assembly 10 includes a plurality of receiving holes 1001 opened on the outside of the installation box 901, and a plurality of touch rods 1002 are fixedly installed on the first cavity 802 near the side of the installation box 901, and a ball 1003 is provided on one end of the plurality of touch rods 1002 near the installation box 901; the number of the receiving holes 1001 is twice the number of the touch rods 1002, and the receiving holes 1001 are adapted to the ball 1003. When the ball 1003 enters the receiving hole 1001, the elastic hose 803 near the side of the installation box 901 contracts, and the spiral blade 801 moves accordingly. At this time, the elastic hose 803 connected to the other end of the spiral blade 801 will be opened. When the ball 1003 contacts the outer surface of the installation box 901, the elastic hose 803 near the side of the installation box 901 is opened, and the spiral blade 801 moves accordingly. At this time, the elastic hose 803 connected to the other end of the spiral blade 801 will contract, thereby realizing the axial reciprocating sliding of the spiral heat exchange assembly 8, as shown in FIG. Figure 4 As shown, the spiral heat exchange component 8 can perform axial reciprocating sliding while rotating circumferentially, thereby causing the condensate to generate a complex flow path in the shell 201 and form a strong disturbance.

[0036] In summary, the beneficial effects are as follows: Increase the heat exchange area: The surface area of ​​the heat exchange tube in the shape of spiral blades 801 is significantly increased compared to the straight heat exchange tube, which increases the contact area between the condenser and the spiral blades 801, provides a wider place for heat transfer, and improves the overall heat exchange efficiency of the evaporator 2.

[0037] Enhanced fluid disturbance: The axial rotation and axial reciprocating sliding of the spiral blade 801, on the one hand, cause the condenser to produce a complex flow path in the shell 201, forming a strong disturbance. This disturbance makes the temperature and concentration distribution of the condenser more uniform, avoids local overheating or overcooling, reduces thermal resistance, and further strengthens the heat transfer process; on the other hand, it increases the contact opportunity and contact time between the medium and the wall of the spiral blade 801, which enables the heat of the medium to be more fully transferred to various parts of the spiral blade 801, optimizes the heat transfer path, reduces heat transfer dead corners, and improves the uniformity of heat transfer.

[0038] Promote heat exchange between the medium and the condensing agent: When the medium flows inside the spiral blade 801, the relative movement between the medium and the condensing agent is more intense, which effectively improves the heat transfer coefficient between the two. At the same time, the medium can transfer heat to the condensing agent more fully, promote the evaporation of the condensing agent, and improve the working efficiency of the evaporator 2. In the same time, the evaporator 2 can process more liquid and improve the production capacity.

[0039] Enhanced anti-scaling capability: The circumferential rotation and axial reciprocating sliding of the spiral blade 801, on the one hand, allow the flow of the condensate to have a certain flushing effect on the heat exchange surface, which can effectively prevent the deposition of dirt on the surface of the spiral blade 801, and on the other hand, allow the medium to have a certain flushing effect on the inside of the spiral blade 801, which can prevent the deposition of dirt on the inner wall of the spiral blade 801. Compared with traditional linear heat exchange tubes, this structure is less prone to scaling, reduces the problem of reduced heat transfer performance due to scaling, extends the service life of the evaporator 2, and the stable operation of the system also reduces the failure rate of the equipment, further improving the reliability of the system.

[0040] Avoiding the risk of clogging: By enhancing the disturbance and mixing of the medium, the movement of the spiral blade 801 can keep the solid particles or viscous substances in the medium in a suspended state, and it is not easy to accumulate in the narrow channels or corners inside the spiral blade 801, thereby reducing the risk of the medium clogging the spiral blade 801 and ensuring the normal operation of the evaporator 2.

[0041] The sealed bearing, compressor 3, condenser 4, throttle valve 5, oil separator 11 and control cabinet 12 described in the present application are well-known technologies in the technical field, so their specific structures and working principles are not described in detail.

[0042] The working process is as follows: S1: Figures 2 to 4 As shown, when working, the medium generated during the operation of the natural gas compressor is injected into the main liquid inlet pipe 601, and then the main liquid inlet pipe 601 will divert the medium from the two liquid inlet branches 602 to the inside of the two spiral heat exchange components 8 (such as Figures 8 to 10As shown, the medium will enter the interior of the plurality of spiral blades 801 through the connecting pipe 805, the second cavity 804 and the first cavity 802 in sequence, and then enter the liquid outlet branch pipe 702 through the first cavity 802, the second cavity 804 and the connecting pipe 805 in sequence, and then be discharged through the main liquid outlet pipe 701); S2: Figure 5 , Figure 7 and Fig.10 As shown, by starting the motor 902, the motor 902 drives one of the synchronous gears 904 through the driving gear 903, and then the two synchronous gears 904 are meshed, so that the two spiral heat exchange components 8 rotate in opposite directions; S3: Figure 4 and Fig.10 As shown, when the spiral heat exchange assembly 8 rotates, one set of spiral blades 801 will push the condensing agent from one side of the installation box 901 to one side of the liquid outlet branch pipe 702 to form a swirl, and then another set of spiral blades 801 will push the condensing agent from one side of the liquid outlet branch pipe 702 to one side of the installation box 901 to form a swirl, thereby realizing the circulation of the condensing agent inside the shell 201; S4: Figures 8 to 10 As shown, when the ball 1003 enters the accommodating hole 1001, the elastic hose 803 close to the side of the installation box 901 contracts, and the spiral blade 801 moves accordingly. At this time, the elastic hose 803 connected to the other end of the spiral blade 801 will be opened. When the ball 1003 contacts the outer surface of the installation box 901, the elastic hose 803 close to the side of the installation box 901 is opened, and the spiral blade 801 moves accordingly. At this time, the elastic hose 803 connected to the other end of the spiral blade 801 will contract, thereby realizing that the spiral heat exchange component 8 can rotate circumferentially and slide back and forth axially at the same time, as shown in FIG. Figure 4 As shown, the condensing agent is forced to generate a complex flow path in the shell 201, forming a strong disturbance; S5: Figure 4 As shown, when the medium flows inside the plurality of spiral blades 801, its heat is transferred to the condensing agent inside the housing 201 by the spiral blades 801, and the condensing agent is evaporated by the heat to generate steam, which is then discharged through the steam outlet pipe; S6, such as Figures 1 to 4As shown, the condensing agent in the evaporator 2 is in a low-temperature and low-pressure liquid state. Because the pressure is very low, the condensing agent will change from liquid to gas, and evaporate to absorb heat. In the process of evaporation, because it absorbs the heat of the medium in the spiral blade 801, the condensing agent cools the medium. After the condensing agent gas comes out of the evaporator 2, it is sucked into the compressor 3. The compressor 3 compresses the low-temperature and low-pressure condensing agent gas into a high-temperature and high-pressure gas. After the condensing agent comes out of the compressor 3, it enters the oil separator 11. The oil separator 11 can separate the refrigerant oil discharged together with the refrigerant gas, and then send the refrigerant oil back to the compressor 3. Only the high-temperature and high-pressure refrigerant gas can be discharged. The pressurized condensing agent gas enters the condenser 4. Because the pressure in the condenser 4 is very high, the high-temperature and high-pressure condensing agent gas will condense and release heat, and release the heat to the cooling water inside the condenser 4, so as to heat the cooling water. The heated cooling water will be sent to the cooling tower to release heat. After releasing heat in the condenser 4, the condensing agent changes from a high-temperature and high-pressure gas to a medium-temperature and high-pressure liquid. The liquid condensing agent enters the throttle valve 5 from the condenser. The main function of the throttle valve 5 is to reduce the pressure of the condensing agent, so that the medium-temperature and high-pressure condensing agent liquid is changed into a low-temperature and low-pressure condensing agent liquid, and then returns to the evaporator 2 again, thereby completing the entire condensing agent circulation process.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat pump system coupled with a natural gas compressor for heating, comprising a mounting frame (1) and an evaporator (2), a compressor (3), a condenser (4), a throttle valve (5), an oil separator (11) and a control cabinet (12) mounted on the mounting frame (1), characterized in that: The evaporator (2) comprises a shell (201) and shell covers (202) mounted at both ends of the shell (201); a condensing agent injection pipe (203) is fixedly provided at the bottom of the shell (201), and a mist exhaust pipe (204) is fixedly provided at the top of the shell (201); A liquid inlet component (6) and a liquid outlet component (7) are provided inside the shell (201); the liquid inlet component (6) is arranged above the liquid outlet component (7); the liquid inlet component (6) and the liquid outlet component (7) are connected via two spiral heat exchange components (8); the spiral heat exchange component (8) is arranged near the bottom of the evaporator (2); a drive component (9) for controlling the rotation of the spiral heat exchange component (8) is provided inside the evaporator (2); a trigger component (10) is provided on a side of the spiral heat exchange component (8) near the drive component (9); and a partition plate (211) is fixedly provided on the shell (201) between the two spiral heat exchange components (8); When the spiral heat exchange component (8) rotates, the trigger component (10) causes the spiral heat exchange component (8) to slide axially back and forth while rotating circumferentially, thereby causing the condensing agent to generate a complex flow path in the shell (201) and increasing the contact opportunity and contact time between the feed liquid and the wall surface of the spiral heat exchange component (8).

2. A heat pump system coupled with a natural gas compressor for heating according to claim 1, characterized in that: The liquid inlet assembly (6) comprises a main liquid inlet pipe (601) fixedly mounted inside the housing (201), and two liquid inlet branch pipes (602) are fixedly mounted on one end of the main liquid inlet pipe (601) close to the drive assembly (9), and the two liquid inlet branch pipes (602) are both L-shaped.

3. A heat pump system coupled with a natural gas compressor for heating according to claim 2, characterized in that: The liquid outlet component (7) comprises a main liquid outlet pipe (701) fixedly mounted inside the shell (201), and liquid outlet branch pipes (702) are fixedly mounted at positions of the main liquid outlet pipe (701) corresponding to the two spiral heat exchange components (8).

4. A heat pump system coupled with a natural gas compressor for heating according to claim 3, characterized in that: The spiral heat exchange component (8) comprises a plurality of spiral blades (801), both ends of the plurality of spiral blades (801) are fixedly mounted with a first cavity (802), two first cavities (802) are fixedly mounted with a second cavity (804) via an elastic hose (803), and a connecting pipe (805) is fixedly mounted at the center of the second cavity (804), the connecting pipe (805) on a side close to the liquid inlet branch pipe (602) is rotatably matched with the liquid inlet branch pipe (602), and the connecting pipe (805) on a side close to the liquid outlet branch pipe (702) is rotatably matched with the liquid outlet branch pipe (702).

5. A heat pump system coupled with a natural gas compressor for heating according to claim 4, characterized in that: The driving assembly (9) comprises a mounting box (901) fixedly mounted inside the housing (201); a motor (902) is fixedly mounted inside the mounting box (901); a driving gear (903) is fixedly mounted on the output end of the motor (902); two connecting tubes (805) close to one side of the mounting box (901) are rotatably matched with the mounting box (901); synchronous gears (904) are fixedly mounted on the outer surfaces of two adjacent connecting tubes (805) located inside the mounting box (901); the two synchronous gears (904) are meshed with each other, and the driving gear (903) is meshed with one of the synchronous gears (904).

6. A heat pump system coupled with a natural gas compressor for heating according to claim 5, characterized in that: A sealing box cover (9011) is fixedly mounted at the opening of the installation box (901), and rotation holes are provided in the installation box (901) at positions corresponding to the two connecting tubes (805), and the connecting tubes (805) are connected to the rotation holes via sealing bearings.

7. A heat pump system coupled with a natural gas compressor for heating according to claim 6, characterized in that: The liquid inlet branch pipe (602) is inserted into the interior of the connecting pipe (805), and the connecting pipe (805) close to the liquid inlet branch pipe (602) is connected to the liquid inlet branch pipe (602) through a sealing bearing. The end of the liquid outlet branch pipe (702) is sleeved on the outer surface of the connecting pipe (805), and the connecting pipe (805) close to the liquid outlet branch pipe (702) is connected to the liquid outlet branch pipe (702) through a sealing bearing.

8. The heat pump system coupled with a natural gas compressor for heating according to claim 5, characterized in that: The touch assembly (10) comprises a plurality of receiving holes (1001) opened on the outside of the installation box (901), a plurality of touch rods (1002) are fixedly mounted on the first cavity (802) on a side close to the installation box (901), and a ball (1003) is provided at one end of the plurality of touch rods (1002) close to the installation box (901).

9. A heat pump system coupled with a natural gas compressor for heating according to claim 8, characterized in that: The number of the accommodating holes (1001) is twice the number of the actuating rods (1002), and the accommodating holes (1001) are adapted to the balls (1003). When the balls (1003) enter the accommodating holes (1001), the elastic hose (803) close to the side of the installation box (901) contracts, and the spiral blade (801) moves accordingly. At this time, the elastic hose (803) connected to the other end of the spiral blade (801) is expanded. When the balls (1003) contact the outer surface of the installation box (901), the elastic hose (803) close to the side of the installation box (901) is expanded, and the spiral blade (801) moves accordingly. At this time, the elastic hose (803) connected to the other end of the spiral blade (801) is expanded, thereby achieving axial reciprocating sliding of the spiral heat exchange component (8).

10. The heat pump system coupled with a natural gas compressor for heating according to claim 1, characterized in that: The mist exhaust pipe (204) is connected to the compressor (3), and the condensing agent injection pipe (203) is connected to the throttle valve (5). The throttle valve (5) is used to inject the condensing agent inside the condenser (4) from the condensing agent injection pipe (203) into the interior of the shell (201).

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