A heat pump system coupled with a natural gas compressor for heat supply

Abstract

The present invention relates to the technical field of evaporators, and specifically to a heat pump system coupled with a natural gas compressor for heat supply, which includes a mounting frame and an evaporator installed on the mounting frame. The evaporator includes a housing and housing covers installed at both ends of the housing. A refrigerant injection pipe is fixedly provided at the bottom of the housing, and a mist discharge pipe is fixedly provided at the top of the housing. An inlet liquid assembly and an outlet liquid assembly are provided inside the housing. The inlet liquid assembly is arranged above the outlet liquid assembly, and the inlet liquid assembly and the outlet liquid assembly are connected and communicated through two spiral heat exchange assemblies. The beneficial effects of the present invention are as follows: By utilizing the axial rotation and axial reciprocating sliding of the spiral blades, the refrigerant is promoted to generate a complex flow path inside the housing, forming a strong disturbance, improving the uniformity of heat transfer, avoiding local overheating or overcooling phenomena, reducing the thermal resistance, and at the same time enabling the flow of the refrigerant to have a certain scouring effect on the heat exchange surface, which can effectively prevent dirt from depositing on the surface of the spiral blades and the inner wall.

Description

Technical Field

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

[0002] A heat pump system coupled with a natural gas compressor for heating is an efficient energy utilization system that recovers the heat generated during the operation of the natural gas compressor and uses it for heating in the heat pump system.

[0003] The core devices of the heat pump system are:

[0004] Evaporator: It is a component in the heat pump system where the working fluid evaporates and absorbs heat. It absorbs heat from a low-temperature heat source, causing the working fluid to change from a liquid state to a gaseous state. In this system, the evaporator can absorb the heat transferred by the heat recovery device or obtain additional heat from the environment.

[0005] Compressor: Compresses the gaseous working fluid coming out of the evaporator, increasing its pressure and temperature, and providing power for the subsequent heating process.

[0006] Condenser: Allows the high-temperature and high-pressure gaseous working fluid to condense and release heat in the condenser, releasing the heat to the medium that needs heating, such as hot water, heating, etc., to achieve the heating function.

[0007] Throttle valve: Located between the condenser and the evaporator, it throttles and reduces the pressure of the high-pressure liquid working fluid after condensation in the condenser, enabling it to evaporate and absorb heat smoothly in the evaporator to complete the heat pump cycle.

[0008] The evaporator plays a crucial role in the heat pump system.

[0009] An evaporator disclosed in Chinese Patent Publication No. CN118423899B. When in use, the medium passes through the heat exchange tube, and its heat is transferred by the heat exchange tube to the coolant inside the housing. The coolant is heated and evaporated to generate steam, and then the steam is discharged through the steam outlet pipe.

[0010] However, compared with the prior art in the related field, the deficiencies of the existing evaporator are as follows:

[0011] Limited heat transfer efficiency: The surface area of the straight heat exchange tube is relatively small, and the contact area with the coolant is limited, resulting in a limited heat transfer area and restricting the further improvement of heat transfer efficiency, which to a certain extent restricts the refrigeration or heating capacity of the heat pump unit.

[0012] Mass transfer non-uniformity: In a straight heat exchange tube, the flow of the refrigerant and the liquid to be processed is relatively stable, lacking sufficient disturbance, which easily leads to uneven temperature and concentration distributions, resulting in local overheating or overcooling phenomena, increasing the thermal resistance, affecting the mass transfer effect, and further reducing the overall performance of the heat pump unit.

[0013] Serious fouling problem: The scouring effect of the refrigerant and the liquid to be processed on the surface of the heat exchange tube during flow is weak, and dirt is easily deposited on the surface of the heat exchange tube. Over time, the fouling will gradually thicken, leading to a significant decline in heat transfer performance, increasing energy consumption and operating costs, and shortening the service life of the evaporator at the same time.

[0014] Higher risk of blockage: The flow of the liquid to be processed inside the straight heat exchange tube is relatively stable, and its ability to carry solid particles or viscous substances in the liquid to be processed is limited. These substances are easily accumulated in narrow channels or corners inside the heat exchange tube, increasing the risk of the liquid to be processed 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

[0015] The purpose of the present invention is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a heat pump system coupled with a natural gas compressor for heating.

[0016] The purpose of the present invention is achieved through the following technical solutions: A heat pump system coupled with a natural gas compressor for heating, including 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 includes a housing and housing covers mounted at both ends of the housing. A refrigerant injection pipe is fixedly provided at the bottom of the housing, and a mist discharge pipe is fixedly provided at the top of the housing; an inlet liquid assembly and an outlet liquid assembly are provided inside the housing. The inlet liquid assembly is arranged above the outlet liquid assembly, and the inlet liquid assembly and the outlet liquid assembly are connected and communicated through two spiral heat exchange components. The spiral heat exchange components are arranged near the bottom of the evaporator. A driving component for controlling the rotation of the spiral heat exchange components is provided inside the evaporator. A touching component is provided on one side of the spiral heat exchange component close to the driving component. A partition plate is fixedly provided inside the housing between the two spiral heat exchange components; when the spiral heat exchange component rotates, the touching component causes the spiral heat exchange component to perform axial reciprocating sliding while rotating circumferentially, thereby not only promoting the refrigerant to generate a complex flow path inside the housing but also increasing the contact opportunity and contact time between the liquid to be processed and the wall surface of the spiral heat exchange component.

[0017] Furthermore, the inlet liquid assembly includes a main inlet liquid pipe fixedly installed inside the housing. Two inlet liquid branch pipes are fixedly installed at one end of the main inlet liquid pipe close to the driving component, and the shapes of the two inlet liquid branch pipes are both L-shaped.

[0018] Further, the liquid outlet assembly includes a main liquid outlet pipe fixedly installed inside the housing, and liquid outlet branch pipes are fixedly installed at positions corresponding to the two spiral heat exchange components on the main liquid outlet pipe.

[0019] Further, the spiral heat exchange component includes a plurality of spiral vanes, and first cavities are fixedly installed at both ends of the plurality of spiral vanes. Two second cavities are fixedly installed on both first cavities through elastic hoses. Connecting pipes are fixedly installed at the centers of the second cavities. The connecting pipe on the side close to the liquid inlet branch pipe is rotationally matched with the liquid inlet branch pipe, and the connecting pipe on the side close to the liquid outlet branch pipe is rotationally matched with the liquid outlet branch pipe.

[0020] Further, the driving component includes an installation box fixedly installed inside the housing. A motor is fixedly installed inside the installation box, and a driving gear is fixedly installed at the output end of the motor. The two connecting pipes on the side close to the installation box are rotationally matched with the installation box. Synchronous gears are fixedly installed on the outer surfaces of the adjacent two connecting pipes inside the installation box, and the two synchronous gears are meshed with each other. The driving gear is meshed with one of the synchronous gears.

[0021] Further, a sealing box cover is fixedly installed at the opening of the installation box. Rotation holes are opened at positions corresponding to the two connecting pipes on the installation box, and the connecting pipes are connected with the rotation holes through sealing bearings.

[0022] Further, the liquid inlet branch pipe is inserted into the inside of the connecting pipe, and the connecting pipe on the side close to the liquid inlet branch pipe is connected with the liquid inlet branch pipe through a sealing bearing. The end of the liquid outlet branch pipe is sleeved on the outer surface of the connecting pipe, and the connecting pipe on the side close to the liquid outlet branch pipe is connected with the liquid outlet branch pipe through a sealing bearing.

[0023] Further, the touch component includes a plurality of accommodation holes opened on the outer side of the installation box. A plurality of touch rods are fixedly installed on the first cavity on the side close to the installation box, and balls are arranged at one ends of the plurality of touch rods close to the installation box.

[0024] Further, the number of accommodation holes is twice the number of touch rods, and the accommodation holes are adapted to the balls. When the balls enter the accommodation holes, the elastic hose on the side close to the installation box contracts, and the spiral vanes move accordingly. At this time, the elastic hose connected to the other end of the spiral vanes will expand. When the balls contact the outer surface of the installation box, the elastic hose on the side close to the installation box expands, and the spiral vanes move accordingly. At this time, the elastic hose connected to the other end of the spiral vanes will contract, so as to realize the axial reciprocating sliding of the spiral heat exchange component.

[0025] Further, the mist exhaust pipe is communicated with the compressor, and the refrigerant injection pipe is communicated with the throttle valve. The throttle valve is used to inject the refrigerant inside the condenser into the inside of the housing through the refrigerant injection pipe.

[0026] The beneficial effects of the present invention are as follows: By providing a liquid inlet assembly, a liquid outlet assembly, a spiral heat exchange assembly, a driving assembly, and a triggering assembly, firstly, compared with a straight heat exchange tube, the heat exchange tube in the shape of a spiral blade has a significantly increased surface area, which increases the contact area between the coolant and the spiral blade, provides a broader 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, it promotes the coolant to generate a complex flow path in the shell, forming a strong disturbance. This disturbance makes the temperature and concentration distribution of the coolant more uniform, avoids local overheating or overcooling phenomena, reduces the 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 surface of the spiral blade, enabling the heat of the medium to be more fully transferred to various parts of the spiral blade, optimizing the heat transfer path, reducing the heat transfer dead angle, and improving 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 coolant has a certain scouring 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, the medium has a certain scouring 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

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a schematic diagram of the overall structure of the heat pump system of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the evaporator of the present invention;

[0030] Figure 3 It is a schematic diagram of the internal structure of the shell of the present invention;

[0031] Figure 4 It is a schematic diagram of the flow trajectory of the coolant of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the liquid inlet assembly and the liquid outlet assembly of the present invention;

[0033] Figure 6 It is a schematic diagram of the internal structure of the installation box of the present invention;

[0034] Figure 7 For the present invention Figure 6 The enlarged schematic diagram of the structure at A in

[0035] Figure 8 It is a partial cross-sectional schematic diagram of the installation box and the liquid outlet branch pipe of the present invention;

[0036] Figure 9 For the present invention Figure 8 A schematic enlarged view of the structure at position B in;

[0037] Figure 10 It is a schematic diagram of the structure of the spiral heat exchange component of the present invention.

[0038] In the figure: 1. Installation frame; 2. Evaporator; 201. Shell; 2011. Partition board; 202. Shell cover; 203. Condensate injection pipe; 204. Mist 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 component; 801. Spiral blade; 802. First cavity; 803. Elastic hose; 804. Second cavity; 805. Connecting pipe; 9. Driving assembly; 901. Installation box; 9011. Sealed box cover; 902. Motor; 903. Driving gear; 904. Synchronous gear; 10. Touching assembly; 1001. Accommodating hole; 1002. Touching rod; 1003. Ball; 11. Oil separator; 12. Control cabinet. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] The additional aspects and advantages of the present invention will be further given in the following description in conjunction with the accompanying drawings, and some will become obvious from the following description, or will be understood through the practice of the present invention.

[0041] An embodiment of a heat pump system for coupling natural gas compressor heating of the present invention, such as Figures 1 to 10As shown in the figure, it includes a mounting rack 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 rack 1. The evaporator 2 includes a housing 201 and housing covers 202 mounted at both ends of the housing 201. A refrigerant injection pipe 203 is fixedly provided at the bottom of the housing 201, and a mist discharge pipe 204 is fixedly provided at the top of the housing 201. The mist discharge pipe 204 is communicated with the compressor 3, and the refrigerant injection pipe 203 is communicated with the throttle valve 5. The throttle valve 5 is used to inject the refrigerant inside the condenser 4 into the interior of the housing 201 from the refrigerant injection pipe 203. An inlet liquid assembly 6 and an outlet liquid assembly 7 are provided inside the housing 201. The inlet liquid assembly 6 is arranged above the outlet liquid assembly 7. The inlet liquid assembly 6 and the outlet liquid assembly 7 are communicated with each other through two spiral heat exchange assemblies 8. The spiral heat exchange assemblies 8 are arranged at positions close to the bottom of the evaporator 2. A driving assembly 9 for controlling the rotation of the spiral heat exchange assemblies 8 is provided inside the evaporator 2. A touch assembly 10 is provided on one side of the spiral heat exchange assembly 8 close to the driving assembly 9. A partition plate 2011 is fixedly provided inside the housing 201 between the two spiral heat exchange assemblies 8. When the spiral heat exchange assembly 8 rotates, the touch assembly 10 causes the spiral heat exchange assembly 8 to perform axial reciprocating sliding while rotating circumferentially, thereby not only promoting the refrigerant to generate a complex flow path inside the housing 201, forming a strong disturbance, which makes the temperature and concentration distribution of the refrigerant more uniform, but also increasing the contact opportunity and contact time between the liquid material and the wall surface of the spiral heat exchange assembly 8, optimizing the heat transfer path and reducing the heat transfer dead angle.

[0042] As Figure 1 , Figure 2 and Figure 10 shown, the inlet liquid assembly 6 includes a main inlet liquid pipe 601 fixedly installed inside the housing 201. Two inlet liquid branch pipes 602 are fixedly installed at one end of the main inlet liquid pipe 601 close to the driving assembly 9. The shapes of the two inlet liquid branch pipes 602 are both L-shaped. The outlet liquid assembly 7 includes a main outlet liquid pipe 701 fixedly installed inside the housing 201. Outlet liquid branch pipes 702 are fixedly installed at positions corresponding to the two spiral heat exchange assemblies 8 on the main outlet liquid pipe 701. During operation, the medium generated during the operation of the natural gas compressor is injected into the main inlet liquid pipe 601, and then the main inlet liquid pipe 601 will split the medium from the two inlet liquid branch pipes 602 into the two spiral heat exchange assemblies 8, and then discharge it through the main outlet liquid pipe 701.

[0043] As Figures 8 to 10As shown in the figure, the spiral heat exchange assembly 8 includes a plurality of spiral vanes 801. At both ends of the plurality of spiral vanes 801, first cavities 802 are fixedly installed. Both of the two first cavities 802 are fixedly installed with second cavities 804 through elastic hoses 803. At the centers of the second cavities 804, connecting pipes 805 are fixedly installed. The connecting pipe 805 on the side close to the liquid inlet branch pipe 602 is rotationally 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 rotationally matched with the liquid outlet branch pipe 702. The medium will sequentially enter the interiors of the plurality of spiral vanes 801 through the connecting pipes 805, the second cavities 804, and the first cavities 802, and then sequentially enter the liquid outlet branch pipe 702 through the first cavities 802, the second cavities 804, and the connecting pipes 805, and then be discharged through the main liquid outlet pipe 701, as Figure 4 and Figure 10 shown. When the spiral heat exchange assembly 8 rotates, one group of spiral vanes 801 will push the coolant from one side of the mounting box 901 to one side of the liquid outlet branch pipe 702 to form a swirling flow, and then the other group of spiral vanes 801 will push the coolant from one side of the liquid outlet branch pipe 702 to one side of the mounting box 901 to form a swirling flow, thereby realizing the circulating flow of the coolant inside the housing 201.

[0044] As Figure 4 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 shown, the driving assembly 9 includes a mounting box 901 fixedly installed inside the housing 201. Inside the mounting box 901, a motor 902 is fixedly installed. At the output end of the motor 902, a driving gear 903 is fixedly installed. The two connecting pipes 805 on the side close to the mounting box 901 are rotationally matched with the mounting box 901. On the outer surfaces of the adjacent two connecting pipes 805 located inside the mounting box 901, synchronous gears 904 are fixedly installed. The two synchronous gears 904 are meshed with each other, 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, by utilizing the meshing of the two synchronous gears 904, the rotation directions of the two spiral heat exchange assemblies 8 are opposite.

[0045] As Figure 4 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10As shown, a sealing cover 9011 is fixedly installed at the opening of the installation box 901. Rotation holes are provided at positions of the installation box 901 corresponding to the two connecting pipes 805. The connecting pipes 805 are connected to the rotation holes through sealing bearings. By using the provided sealing bearings, the friction during the rotation of the connecting pipes 805 can be reduced, the stability during the rotation of the connecting pipes 805 can be improved, and at the same time, the refrigerant can be prevented 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 near one side of 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 near one side of the liquid outlet branch pipe 702 is connected to the liquid outlet branch pipe 702 through a sealing bearing. By using the provided sealing bearings, the leakage of the medium during transmission can be avoided, and the stability of the device during operation can be effectively improved.

[0046] As Figures 8 to 10 shown, the touch component 10 includes a plurality of accommodation holes 1001 provided on the outer side of the installation box 901. A plurality of touch rods 1002 are fixedly installed on the first cavity 802 near one side of the installation box 901. A ball 1003 is provided at one end of each of the plurality of touch rods 1002 close to the installation box 901. The number of the accommodation holes 1001 is twice the number of the touch rods 1002, and the accommodation holes 1001 are adapted to the balls 1003. When the balls 1003 enter the accommodation holes 1001, the elastic hose 803 near one 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 expand. When the balls 1003 contact the outer surface of the installation box 901, the elastic hose 803 near one side of the installation box 901 expands, 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 component 8. As Figure 4 shown, further, while the spiral heat exchange component 8 rotates circumferentially, it performs axial reciprocating sliding, promoting the refrigerant to generate a complex flow path in the housing 201 and forming a strong disturbance.

[0047] In summary, the beneficial effects are as follows:

[0048] Increasing the heat exchange area: The heat exchange tube in the shape of the spiral blade 801 has a significantly larger surface area compared with the straight heat exchange tube. This increases the contact area between the refrigerant and the spiral blade 801, provides a broader place for heat transfer, and improves the overall heat exchange efficiency of the evaporator 2.

[0049] Enhanced fluid perturbation: The axial rotation and axial reciprocating sliding of the spiral blade 801, on the one hand, prompt the coolant to generate complex flow paths within the housing 201, forming strong perturbations. Such perturbations make the temperature and concentration distribution of the coolant more uniform, avoiding local overheating or overcooling phenomena, reducing thermal resistance, and further strengthening the heat transfer process; on the other hand, it increases the contact opportunity and contact time between the medium and the wall surface of the spiral blade 801, enabling the heat of the medium to be more fully transferred to various parts of the spiral blade 801, optimizing the heat transfer path, reducing heat transfer dead ends, and improving the uniformity of heat transfer.

[0050] Promote heat exchange between the medium and the coolant: When the medium flows inside the spiral blade 801, the relative movement between it and the coolant becomes more intense, effectively increasing the heat transfer coefficient between the two. At the same time, the medium can transfer heat to the coolant more fully, promoting the evaporation of the coolant, improving the working efficiency of the evaporator 2. Within the same time, the evaporator 2 can handle more feed liquid, enhancing the production capacity.

[0051] Enhanced anti-scaling ability: The circumferential rotation and axial reciprocating sliding of the spiral blade 801, on the one hand, cause the flow of the coolant to have a certain scouring effect on the heat exchange surface, effectively preventing the deposition of dirt on the surface of the spiral blade 801; on the other hand, it makes the medium have a certain scouring effect on the inside of the spiral blade 801, preventing dirt from depositing on the inner wall of the spiral blade 801. Compared with traditional straight heat exchange tubes, this structure is less prone to scaling, reducing the problem of heat transfer performance degradation caused by scaling, extending the service life of the evaporator 2. The stable operation of the system also reduces the failure rate of the equipment, further improving the reliability of the system.

[0052] Avoid the risk of blockage: By enhancing the perturbation and mixing of the medium, the movement of the spiral blade 801 can keep solid particles or viscous substances in the medium in a suspended state, making it difficult to accumulate in narrow channels or corners inside the spiral blade 801, thereby reducing the risk of the medium blocking the spiral blade 801 and ensuring the normal operation of the evaporator 2.

[0053] The sealed bearings, compressor 3, condenser 4, throttle valve 5, oil separator 11, and control cabinet 12 described in this application are all well-known technologies in the technical field, so their specific structures and working principles are not described in detail.

[0054] The working process is as follows:

[0055] S1: As Figures 2 to 4 shown, during operation, the medium generated during the operation of the natural gas compressor is injected into the main inlet pipe 601, and then the main inlet pipe 601 will split the medium from the two inlet branch pipes 602 into the two spiral heat exchange assemblies 8 (as Figures 8 to 10As shown, the medium will sequentially pass through the connecting pipe 805, the second cavity 804, and the first cavity 802 and enter the interiors of the plurality of spiral vanes 801, and then sequentially pass through the first cavity 802, the second cavity 804, and the connecting pipe 805 and enter the liquid outlet branch pipe 702, and then be discharged through the main liquid outlet pipe 701);

[0056] S2: As Figure 5 , Figure 7 and Figure 10 shown, by starting the motor 902, the motor 902 drives one of the synchronous gears 904 through the driving gear 903, and then by using the meshing of the two synchronous gears 904, the rotation directions of the two spiral heat exchange assemblies 8 are opposite;

[0057] S3: As Figure 4 and Figure 10 shown, when the spiral heat exchange assembly 8 rotates, one set of spiral vanes 801 will push the coolant from one side of the mounting box 901 to one side of the liquid outlet branch pipe 702 to form a swirl, and then the other set of spiral vanes 801 will push the coolant from one side of the liquid outlet branch pipe 702 to one side of the mounting box 901 to form a swirl, thereby realizing the circulating flow of the coolant inside the housing 201;

[0058] S4: As Figures 8 to 10 shown, when the ball 1003 enters the receiving hole 1001, the flexible hose 803 near the side of the mounting box 901 contracts, and the spiral vane 801 moves accordingly. At this time, the flexible hose 803 connected to the other end of the spiral vane 801 will expand. When the ball 1003 contacts the outer surface of the mounting box 901, the flexible hose 803 near the side of the mounting box 901 expands, and the spiral vane 801 moves accordingly. At this time, the flexible hose 803 connected to the other end of the spiral vane 801 will contract, thereby realizing the axial reciprocating sliding of the spiral heat exchange assembly 8 while rotating circumferentially. As Figure 4 shown, it promotes the coolant to generate a complex flow path inside the housing 201 and form a strong disturbance;

[0059] S5: As Figure 4 shown, when the medium flows inside the plurality of spiral vanes 801, its heat will be transferred by the spiral vanes 801 to the coolant inside the housing 201, the coolant is heated and evaporated to generate steam, and then the steam is discharged through the steam outlet pipe;

[0060] S6. As Figures 1 to 4As shown, the refrigerant is in a low-temperature and low-pressure liquid state in the evaporator 2. Because the pressure is very low, the refrigerant will change from liquid to gas, absorbing heat during evaporation. During the evaporation process, as it absorbs the heat of the medium in the spiral blade 801, the refrigerant cools down the medium. After the refrigerant gas comes out of the evaporator 2, it is sucked into the compressor 3. The compressor 3 compresses the low-temperature and low-pressure refrigerant gas into a high-temperature and high-pressure gas. After the refrigerant comes out of the compressor 3, it enters the oil separator 11. The oil separator 11 can separate the refrigeration oil discharged together with the refrigerant gas, and then send the refrigeration oil back to the compressor 3. Only the high-temperature and high-pressure refrigerant gas enters the condenser 4. In the condenser 4, because the pressure is very high, the high-temperature and high-pressure refrigerant gas will condense and release heat, releasing the heat to the cooling water inside the condenser 4 to heat the cooling water. The heated cooling water will be sent to the cooling tower to release heat. After the refrigerant releases heat in the condenser 4, it changes from a high-temperature and high-pressure gas to a medium-temperature and high-pressure liquid. The liquid refrigerant enters the throttle valve 5 from the condenser. The main function of the throttle valve 5 is to reduce the pressure of the refrigerant, turning the medium-temperature and high-pressure liquid refrigerant into a low-temperature and low-pressure liquid refrigerant, and then returning to the inside of the evaporator 2 again, thus completing the entire cycle process of the refrigerant.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heat pump system coupled with a natural gas compressor for heat supply, comprising a mounting frame (1), 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) includes a housing (201) and housing covers (202) installed at both ends of the housing (201). A refrigerant injection pipe (203) is fixedly provided at the bottom of the housing (201), and a mist discharge pipe (204) is fixedly provided at the top of the housing (201). An inlet liquid assembly (6) and an outlet liquid assembly (7) are provided inside the housing (201). The inlet liquid assembly (6) is arranged above the outlet liquid assembly (7). The inlet liquid assembly (6) and the outlet liquid assembly (7) are connected by two spiral heat exchange assemblies (8). The spiral heat exchange assemblies (8) are arranged near the bottom of the evaporator (2). A driving assembly (9) for controlling the rotation of the spiral heat exchange assemblies (8) is provided inside the evaporator (2). A touch assembly (10) is provided on one side of the spiral heat exchange assembly (8) close to the driving assembly (9). A partition plate (2011) is fixedly provided inside the housing (201) between the two spiral heat exchange assemblies (8). When the spiral heat exchange assembly (8) rotates, the touch assembly (10) causes the spiral heat exchange assembly (8) to perform axial reciprocating sliding while rotating circumferentially, thereby not only promoting the generation of a complex flow path of the refrigerant in the housing (201), but also increasing the contact opportunity and contact time between the liquid material and the wall surface of the spiral heat exchange assembly (8). The inlet liquid assembly (6) includes a main inlet liquid pipe (601) fixedly installed inside the housing (201). Two inlet liquid branch pipes (602) are fixedly installed at one end of the main inlet liquid pipe (601) close to the driving assembly (9). The shapes of the two inlet liquid branch pipes (602) are both L-shaped. The outlet liquid assembly (7) includes a main outlet liquid pipe (701) fixedly installed inside the housing (201). Outlet liquid branch pipes (702) are fixedly installed at positions corresponding to the two spiral heat exchange assemblies (8) on the main outlet liquid pipe (701). The spiral heat exchange assembly (8) includes a plurality of spiral blades (801). First cavities (802) are fixedly installed at both ends of the plurality of spiral blades (801). Second cavities (804) are fixedly installed on both the first cavities (802) through elastic hoses (803). Connecting pipes (805) are fixedly installed at the centers of the second cavities (804). The connecting pipe (805) on the side close to the inlet liquid branch pipe (602) is rotationally matched with the inlet liquid branch pipe (602), and the connecting pipe (805) on the side close to the outlet liquid branch pipe (702) is rotationally matched with the outlet liquid branch pipe (702).

2. The heat pump system coupling a natural gas compressor for heat supply according to claim 1, wherein: The driving component (9) includes a mounting box (901) fixedly installed inside the housing (201). A motor (902) is fixedly installed inside the mounting box (901). A driving gear (903) is fixedly installed at the output end of the motor (902). Two of the connecting pipes (805) near one side of the mounting box (901) are rotationally matched with the mounting box (901). Synchronous gears (904) are fixedly installed on the outer surfaces of adjacent connecting pipes (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).

3. A heat pump system for coupling a natural gas compressor for heat supply, characterized in that: A sealing box cover (9011) is fixedly installed at the opening of the mounting box (901). Rotation holes are formed in the mounting box (901) corresponding to the two connecting pipes (805). The connecting pipes (805) are connected to the rotation holes through sealing bearings.

4. A heat pump system coupled with a natural gas compressor for heating, characterized in that: The liquid inlet branch pipe (602) is inserted into the inside of the connecting pipe (805). The connecting pipe (805) near one side of 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). The connecting pipe (805) near one side of the liquid outlet branch pipe (702) is connected to the liquid outlet branch pipe (702) through a sealing bearing.

5. A heat pump system for coupling a natural gas compressor for heat supply, characterized in that: The triggering component (10) includes a plurality of receiving holes (1001) formed on the outer side of the mounting box (901). A plurality of triggering rods (1002) are fixedly installed on the first cavity (802) near one side of the mounting box (901). Ball beads (1003) are provided at one ends of the plurality of triggering rods (1002) close to the mounting box (901).

6. The heat pump system for coupling a natural gas compressor for heat supply according to claim 5, characterized in that: The number of the receiving holes (1001) is twice the number of the triggering rods (1002). The receiving holes (1001) are adapted to the ball beads (1003). When the ball beads (1003) enter the receiving holes (1001), the elastic hose (803) near one side of the mounting 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 expand. When the ball beads (1003) contact the outer surface of the mounting box (901), the elastic hose (803) near one side of the mounting box (901) expands, 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 component (8).

7. A heat pump system for coupling a natural gas compressor for heat supply, characterized in that: The fog exhaust pipe (204) is communicated with the compressor (3), the refrigerant injection pipe (203) is communicated with the throttle valve (5), and the throttle valve (5) is used to inject the refrigerant inside the condenser (4) into the inside of the housing (201) through the refrigerant injection pipe (203).

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