An automatic control system for air source heat pump

Abstract

The present invention discloses an automatic control system for an air source heat pump, which relates to the technical field of air source heat pumps, and comprises a chassis and an insulated water tank, wherein an evaporator is arranged at the upper end of the chassis, a condenser is arranged inside the insulated water tank, and a circulation component for circulating a heat exchange medium is arranged between the evaporator and the condenser; a fixed frame is fixedly connected to the upper end of the chassis, and the present invention arranges both a compressor and a drive motor at the upper end of the chassis, so that when the blades blow air to improve air circulation, the heat generated by the compressor and the drive motor can be taken away, thereby avoiding overheating of the compressor and the drive motor, and since the heat on the compressor and the drive motor is taken away, the temperature of the blown air can also be increased, so that the heat exchange medium can obtain more heat when passing through the evaporator, thereby improving the heat exchange effect and efficiency, and can effectively reduce the operating time of the compressor, thereby achieving the purpose of energy saving.

Description

Technical Field

[0001] The invention relates to the technical field of air source heat pumps, in particular to an automatic control system for an air source heat pump. Background Art

[0002] Air source heat pump is an energy-saving device that uses high-level energy to make heat flow from low-level heat source air to high-level heat source. It is a type of heat pump technology and is known as "the transporter of nature's energy". It has multiple advantages such as low cost, easy operation, good heating effect, safety and cleanliness.

[0003] Air source heat pumps use the energy in the air as their main power source. The electricity they consume is only used to drive the compressor to achieve energy transfer. They do not require complex configurations, expensive water intake, reinjection or soil heat exchange systems, and dedicated machine rooms. They can gradually reduce the large amount of pollutant emissions brought to the atmospheric environment by traditional heating, ensuring heating effectiveness while achieving energy conservation and environmental protection.

[0004] However, in order to improve the heat absorption efficiency of the evaporator in the prior art, it is generally directly set on both sides of the machine. This method will cause dust to adhere to the surface of the evaporator after long-term use. After the dust is attached, the heat exchange efficiency of the evaporator is greatly reduced, which makes the heating capacity of the equipment decrease, resulting in increased energy consumption. At the same time, the prior art cannot use solar energy for auxiliary heating, resulting in a long operating time of the compressor, thereby increasing energy consumption. In response to the above problems, we provide an air source heat pump automatic control system to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide an air source heat pump automatic control system to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An air source heat pump automatic control system comprises a chassis and an insulated water tank, wherein an evaporator is arranged at the upper end of the chassis, a condenser is arranged inside the insulated water tank, and a circulation component for circulating a heat exchange medium is arranged between the evaporator and the condenser;

[0008] A fixing frame is fixedly connected to the upper end of the chassis, and a dustproof component for preventing dust from the evaporator is provided on the fixing frame;

[0009] The bottom of the chassis is provided with a blowing assembly for improving air circulation around the evaporator;

[0010] A drainage pipe is provided at the lower end of the thermal insulation water tank, and a water inlet preheating component for auxiliary heating is provided on the water inlet end of the drainage pipe.

[0011] As a further solution of the present invention: the circulation component includes a compressor, which is installed at the upper end of the chassis, the compressor input end is connected to an interface at one end of the evaporator, the compressor output end is connected to a second circulation pipe, the second circulation pipe is connected to one end of the condenser, the other end of the condenser is connected to a first circulation pipe, the end of the first circulation pipe away from the condenser is connected to the other end of the evaporator, and the second circulation pipe is located inside the chassis and is sequentially installed in series with an expansion valve, an oil storage tank and a filter.

[0012] As a further solution of the present invention: the dustproof component includes a filter screen cover, which is fixedly connected to the upper end of the fixed frame, and the upper end of the filter screen cover is fixedly connected to a top plate, and the positions between the top plate and the four corners of the fixed frame are fixedly connected to sliding rods, and the four sides of the fixed frame are provided with cleaning components for cleaning the filter screen cover.

[0013] As a further solution of the present invention: the cleaning assembly includes a rectangular brush, which is slidably connected between four sliding rods, and bristles are arranged on the inner side of the rectangular brush. Electric cylinders are installed in the middle of the four sides of the fixed frame to drive the rectangular brush to move up and down.

[0014] As a further solution of the present invention: the blowing assembly includes a fixing plate, which is fixedly connected to the lower end of the chassis, an axis frame is installed in the middle of the lower end of the fixing plate, a mounting shaft is installed in the axis frame, the mounting shaft is located at the middle hole of the fixing plate and is fixedly connected with a blade, the lower end surface of the chassis is provided with an air inlet, a filter plate is installed in the air inlet, a center axis is rotatably connected in the middle of the filter plate, a scraper for scraping the lower end surface of the filter plate is fixedly connected to the lower end of the center axis, and a driving assembly for driving the mounting shaft and the center axis to rotate is provided inside the chassis.

[0015] As a further solution of the present invention: the drive assembly includes a drive motor, which is fixedly connected to the upper end of the chassis at a position on one side of the compressor, and a drive shaft is installed at the output end of the drive motor, and pulleys are installed at the end opposite to the central axis and the lower end of the drive shaft, and belts are installed between the two pulleys at the same horizontal height.

[0016] As a further scheme of the present invention: the water inlet preheating assembly includes a water inlet pipe and a solar collector, the solar collector is installed on the upper end surface of the top plate, the water inlet end of the solar collector is connected to a second water pipe, the end of the second water pipe away from the solar collector is provided with a three-way joint, the end interface of the three-way joint away from the second water pipe is connected to the water inlet pipe, the lower end interface of the three-way joint is connected to a third water pipe, the third water pipe is connected to the upper end of the insulated water tank, the output port of the solar collector is connected to a first water pipe, the first water pipe is connected to the upper end of the insulated water tank, the second water pipe is installed with a first solenoid valve, and the third water pipe is installed with a second solenoid valve.

[0017] As a further solution of the present invention: a temperature sensor for detecting the water temperature inside the insulated water tank is provided inside the insulated water tank, and a controller is also provided on the upper end surface of the insulated water tank. The second solenoid valve, the first solenoid valve, the drive motor and the compressor are all electrically connected to the controller.

[0018] As a further solution of the present invention: the lower ends of the chassis and the thermal insulation water tank are fixedly connected with legs.

[0019] As a further solution of the present invention: the second water pipe, the first water pipe and the third water pipe are all wrapped with thermal insulation cotton.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The filter screen provided in the present invention can prevent dust from entering the evaporator during use, and the filter plate provided can prevent dust from entering the air inlet, thereby preventing dust from adhering to the surface of the evaporator and causing a decrease in heat exchange efficiency, thereby preventing the problem of increased energy consumption due to the decrease in heat exchange efficiency.

[0022] 2. The present invention arranges the compressor and the drive motor at the upper end of the chassis, so that when the blades blow air to improve air circulation, they can also take away the heat generated by the compressor and the drive motor, thereby avoiding overheating of the compressor and the drive motor. In addition, since the heat on the compressor and the drive motor is taken away, the temperature of the blown air can also be increased, so that the heat exchange medium can obtain more heat when passing through the evaporator, thereby improving the heat exchange effect and efficiency, and can effectively reduce the operating time of the compressor to achieve the purpose of energy saving.

[0023] 3. The present invention can obtain heat when there is sufficient sunlight during the day by setting up a solar collector, and thus preheat the water before it enters the thermal insulation water tank, thereby increasing the inlet water temperature, making subsequent heating easier, and greatly reducing the operating time of the compressor, thereby further reducing the energy consumption of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a schematic cross-sectional structural diagram of the chassis in the present invention.

[0026] Figure 3 It is a schematic diagram of the bottom structure of the present invention.

[0027] Figure 4 It is a schematic diagram of the structure of the dustproof mesh cover in the present invention.

[0028] Figure 5 It is a schematic structural diagram of the thermal insulation water tank in the present invention.

[0029] Figure 6 It is a schematic diagram of the structure of the rectangular brush in the present invention.

[0030] Among them: 1. chassis; 2. electric cylinder; 3. sliding rod; 4. filter screen; 5. top plate; 6. solar collector; 7. first water pipe; 8. second water pipe; 9. first solenoid valve; 10. three-way joint; 11. water inlet pipe; 12. second solenoid valve; 13. third water pipe; 14. controller; 15. temperature sensor; 16. insulated water tank; 17. drain pipe; 18. first circulation pipe; 19. second circulation pipe; 20. blade; 21. compressor; 22. evaporator; 23. drive motor; 24. drive shaft; 25. fixed plate; 26. pulley; 27. belt; 28. center shaft; 29. ​​filter plate; 30. expansion valve; 31. oil storage tank; 32. filter; 33. shaft frame; 34. mounting shaft; 35. scraper; 36. fixed frame; 37. rectangular brush; 38. condenser. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figure 1-Figure 6In an embodiment of the present invention, an air source heat pump automatic control system includes a chassis 1 and an insulated water tank 16, the lower ends of the chassis 1 and the insulated water tank 16 are fixedly connected with legs; an evaporator 22 is provided at the upper end of the chassis 1, a condenser 38 is provided inside the insulated water tank 16, and a circulation component for circulating a heat exchange medium is provided between the evaporator 22 and the condenser 38; the circulation component includes a compressor 21, the compressor 21 is installed at the upper end of the chassis 1, the input end of the compressor 21 is connected to an interface at one end of the evaporator 22, and the output end of the compressor 21 is connected to a second circulation pipe 19, and the second circulation pipe 19 is connected to one end of the condenser 38, and the other end interface of the condenser 38 is connected to the first circulation pipe 18, and the end of the first circulation pipe 18 away from the condenser 38 is connected to the other end of the evaporator 22, and the second circulation pipe 19 is located inside the chassis 1 and is sequentially installed in series with an expansion valve 30, an oil storage tank 31 and a filter 32; when working, the compressor 21 starts to drive the heat exchange medium in the pipeline to circulate, so that the heat exchange medium passes through the compressor 21, the condenser 38, the expansion valve 30 and the evaporator 22, and then the heat in the outside air can be exchanged into the water inside 68. The existing technology in this field in this part will not be elaborated here.

[0033] A fixed frame 36 is fixedly connected to the upper end of the chassis 1, and a dustproof component for preventing dust from the evaporator 22 is provided on the fixed frame 36; the dustproof component includes a filter screen cover 4, and the filter screen cover 4 is fixedly connected to the upper end of the fixed frame 36, and a top plate 5 is fixedly connected to the upper end of the filter screen cover 4, and sliding rods 3 are fixedly connected to the positions between the top plate 5 and the four corners of the fixed frame 36, and cleaning components for cleaning the filter screen cover 4 are provided on the four sides of the fixed frame 36; the filter screen cover 4 can be set to prevent dust from being applied to the evaporator 22 during use, thereby preventing dust from adhering to the surface of the evaporator 22 and causing a decrease in heat exchange efficiency, thereby avoiding the problem of increased energy consumption due to the decrease in heat exchange efficiency.

[0034] The cleaning component includes a rectangular brush 37, which is slidably connected to a position between four sliding rods 3. Bristles are arranged on the inner side of the rectangular brush 37. Electric cylinders 2 for driving the rectangular brush 37 to move up and down are installed in the middle of the four sides of the fixed frame 36. When it is necessary to clean the dust attached to the surface of the filter cover 4, the rectangular brush 37 is driven by the electric cylinder 2 to move up and down, and the bristles of the rectangular brush 37 scrape the surface of the filter cover 4 to clean the dust.

[0035] The bottom of the chassis 1 is provided with a blowing assembly for improving the air circulation around the evaporator 22; the blowing assembly includes a fixing plate 25, the fixing plate 25 is fixedly connected to the lower end of the chassis 1, a shaft frame 33 is installed in the middle of the lower end of the fixing plate 25, a mounting shaft 34 is installed in the shaft frame 33, the mounting shaft 34 is located at the position of the middle hole of the fixing plate 25 and is fixedly connected with a blade 20, the lower end surface of the chassis 1 is provided with an air inlet, a filter plate 29 is installed in the air inlet, a central shaft 28 is rotatably connected in the middle of the filter plate 29, a scraper 35 for scraping the lower end surface of the filter plate 29 is fixedly connected at the lower end of the central shaft 28, and a device for driving the mounting shaft 34 and the central shaft 28 to rotate is provided inside the chassis 1. drive assembly; when working, the drive assembly drives the blades 20 to rotate, and the blades 20 drive air circulation, and the circulating air flows through the evaporator 22. At the same time, the compressor 21 and the drive motor 23 are both arranged at the upper end of the chassis 1, so that when the blades 20 blow air to improve air circulation, they can also take away the heat generated by the compressor 21 and the drive motor 23, thereby avoiding overheating of the compressor 21 and the drive motor 23, and because the heat on the compressor 21 and the drive motor 23 is taken away, the temperature of the blown air can also be increased, so that the heat exchange medium can obtain more heat when passing through the evaporator 22, thereby improving the heat exchange effect and efficiency, and can effectively reduce the operating time of the compressor 21, so as to achieve the purpose of energy saving.

[0036] The driving assembly includes a driving motor 23, which is fixedly connected to the upper end of the chassis 1 at a position on one side of the compressor 21. A driving shaft 24 is installed at the output end of the driving motor 23, and a pulley 26 is installed at the end opposite to the mounting shaft 34 and the center shaft 28 and the lower end of the driving shaft 24, and a belt 27 is installed between the two pulleys 26 at the same horizontal height; when working, the driving motor 23 drives the driving shaft 24 to rotate, the rotation of the driving shaft 24 drives the pulley 26 to rotate, the pulley 26 drives the belt 27 to run, and then drives the mounting shaft 34 and the center shaft 28 to rotate, the rotation of the center shaft 28 drives the scraper 35 to rotate to scrape the dust to prevent the dust from clogging the filter plate 29, and the mounting shaft 34 drives the blade 20 to rotate to increase the air circulation speed.

[0037] A drain pipe 17 is provided at the lower end of the insulated water tank 16, and a water inlet preheating component for auxiliary heating is provided on the water inlet end of the drain pipe 17; the water inlet preheating component includes an inlet pipe 11 and a solar collector 6, the solar collector 6 is installed at the upper end surface of the top plate 5, the water inlet end of the solar collector 6 is connected to a second water pipe 8, the end of the second water pipe 8 away from the solar collector 6 is provided with a three-way joint 10, the end interface of the three-way joint 10 away from the second water pipe 8 is connected to the water inlet pipe 11, the lower end interface of the three-way joint 10 is connected to a third water pipe 13, the third water pipe 13 is communicated with the upper end of the insulated water tank 16, the output port of the solar collector 6 is connected to the first water pipe 7, the first water pipe 7 is connected to the insulated water The upper end of the heat preservation water tank 16 is connected, the first solenoid valve 9 is installed on the second water pipe 8, and the second solenoid valve 12 is installed on the third water pipe 13; the inside of the heat preservation water tank 16 is provided with a temperature sensor 15 for detecting the water temperature inside the heat preservation water tank 16, and the upper end surface of the heat preservation water tank 16 is also provided with a controller 14, and the second solenoid valve 12, the first solenoid valve 9, the drive motor 23 and the compressor 21 are all electrically connected to the controller 14; through the solar collector 6, heat can be obtained when there is sufficient sunshine during the day, and then the water can be preheated before entering the heat preservation water tank 16, thereby increasing the water inlet temperature, making subsequent heating easier, and the running time of the compressor can be greatly reduced, thereby further reducing the energy consumption of the equipment.

[0038] The second water pipe 8, the first water pipe 7 and the third water pipe 13 are all wrapped with thermal insulation cotton, and the thermal insulation cotton can reduce heat loss.

[0039] The working principle of the present invention is: when working, the compressor 21 starts to drive the heat exchange medium in the pipeline to circulate, so that the heat exchange medium passes through the compressor 21, the condenser 38, the expansion valve 30 and the evaporator 22, and then the heat in the outside air can be exchanged into the water inside 68. At the same time, the temperature sensor 15 can detect the water temperature inside the insulation water tank 16 when working. When the set temperature is reached, the controller 14 will control the compressor 21 to stop working. When the temperature inside the insulation water tank 16 is lower than the set value, the controller 14 will control the compressor 21 to start, so that the compressor 21 does not need to run continuously, thereby achieving the purpose of energy saving. The filter cover 4 provided can be used to prevent dust from being applied to the evaporator 22 during use, thereby preventing dust from adhering to the surface of the evaporator 22 and causing the heat exchange efficiency to decrease. At the same time, the driving component drives the blades 20 to rotate, and the blades 20 drive the air circulation, and the circulating air flows through the evaporator 22. At the same time, the compressor 21 and the driving motor 23 are both arranged at the upper end of the chassis 1, so that when the blades 20 are blowing to increase the air While circulating, the heat generated by the compressor 21 and the drive motor 23 can be taken away to avoid overheating of the compressor 21 and the drive motor 23. In addition, since the heat on the compressor 21 and the drive motor 23 is taken away, the temperature of the blown air can also be increased, so that the heat exchange medium can obtain more heat when passing through the evaporator 22, thereby improving the heat exchange effect and efficiency, and can effectively reduce the operating time of the compressor 21 to achieve the purpose of energy saving. Through the solar collector 6 set up, heat can be obtained when there is sufficient sunshine during the day. When there is insufficient sunshine or at night, the second solenoid valve 12 can be opened and the first solenoid valve 9 can be closed to allow water to directly enter the insulated water tank 16. When there is sufficient sunshine, the first solenoid valve 9 is opened and the second solenoid valve 12 is closed, and the incoming water flows from the second water pipe 8 through the solar collector 6 for preheating, and then the water can be preheated before entering the insulated water tank 16, thereby increasing the inlet water temperature, making subsequent heating easier, and the operating time of the compressor can be greatly reduced, thereby further reducing the energy consumption of the equipment.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Although this specification is described in accordance with the implementation modes, not every implementation mode includes only one technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An air source heat pump automatic control system, comprising a chassis (1) and a heat preservation water tank (16), characterized in that: An evaporator (22) is provided at the upper end of the chassis (1), a condenser (38) is provided inside the thermal insulation water tank (16), and a circulation component for circulating a heat exchange medium is provided between the evaporator (22) and the condenser (38); A fixing frame (36) is fixedly connected to the upper end of the chassis (1), and a dustproof component for preventing dust from forming on the evaporator (22) is provided on the fixing frame (36); The bottom of the chassis (1) is provided with a blowing assembly for improving air circulation around the evaporator (22); A drainage pipe (17) is provided at the lower end of the thermal insulation water tank (16), and a water inlet preheating component for auxiliary heating is provided at the water inlet end of the drainage pipe (17); The circulation component comprises a compressor (21), the compressor (21) being installed at an upper position inside the case (1), the input end of the compressor (21) being in communication with an interface at one end of the evaporator (22), the output end of the compressor (21) being connected with a second circulation pipe (19), the second circulation pipe (19) being in communication with one end of a condenser (38), the other end interface of the condenser (38) being connected with a first circulation pipe (18), the end of the first circulation pipe (18) away from the condenser (38) being in communication with the other end of the evaporator (22), the second circulation pipe (19) being located inside the case (1) and being sequentially installed with an expansion valve (30), an oil storage tank (31) and a filter (32) in series; The blowing assembly comprises a fixing plate (25), the fixing plate (25) being fixedly connected to the lower end of the chassis (1), an axis frame (33) being installed in the middle of the lower end of the fixing plate (25), a mounting shaft (34) being installed in the axis frame (33), the mounting shaft (34) being located at the middle hole of the fixing plate (25) and being fixedly connected to a blade (20), an air inlet being provided on the lower end surface of the chassis (1), a filter plate (29) being installed in the air inlet, a central shaft (28) being rotatably connected in the middle of the filter plate (29), a scraper (35) being fixedly connected at the lower end of the central shaft (28) for scraping the lower end surface of the filter plate (29), and a driving assembly for driving the mounting shaft (34) and the central shaft (28) to rotate is provided inside the chassis (1); The driving assembly comprises a driving motor (23), the driving motor (23) being fixedly connected to the upper end of the chassis (1) at a position on one side of the compressor (21), the output end of the driving motor (23) being mounted with a driving shaft (24), the end opposite to the mounting shaft (34) and the central shaft (28) and the lower end of the driving shaft (24) being mounted with pulleys (26), and a belt (27) being mounted between two pulleys (26) at the same level; The water inlet preheating component comprises a water inlet pipe (11) and a solar thermal collector (6), wherein the solar thermal collector (6) is installed at a position on the upper end surface of the top plate (5), the water inlet end of the solar thermal collector (6) is connected to a second water pipe (8), the end of the second water pipe (8) away from the solar thermal collector (6) is provided with a three-way joint (10), the end interface of the three-way joint (10) away from the second water pipe (8) is connected to the water inlet pipe (11), the lower end interface of the three-way joint (10) is connected to a third water pipe (13), the third water pipe (13) is connected to the upper end of the thermal insulation water tank (16), the output port of the solar thermal collector (6) is connected to a first water pipe (7), the first water pipe (7) is connected to the upper end of the thermal insulation water tank (16), the second water pipe (8) is installed with a first solenoid valve (9), and the third water pipe (13) is installed with a second solenoid valve (12); A temperature sensor (15) for detecting the water temperature inside the thermal insulation water tank (16) is provided inside the thermal insulation water tank (16), and a controller (14) is also provided on the upper end surface of the thermal insulation water tank (16); the second solenoid valve (12), the first solenoid valve (9), the drive motor (23) and the compressor (21) are all electrically connected to the controller (14).

2. An air source heat pump automatic control system according to claim 1, characterized in that: The dustproof component comprises a filter screen cover (4), the filter screen cover (4) is fixedly connected to the upper end of the fixed frame (36), the upper end of the filter screen cover (4) is fixedly connected to a top plate (5), the positions between the top plate (5) and the four corners of the fixed frame (36) are fixedly connected to sliding rods (3), and the four sides of the fixed frame (36) are provided with cleaning components for cleaning the filter screen cover (4).

3. An air source heat pump automatic control system according to claim 2, characterized in that: The cleaning assembly comprises a rectangular brush (37), the rectangular brush (37) is slidably connected to a position between four sliding rods (3), bristles are arranged on the inner side of the rectangular brush (37), and electric cylinders (2) are installed in the middle of the four sides of the fixed frame (36) for driving the rectangular brush (37) to move up and down.

4. The air source heat pump automatic control system according to claim 1, characterized in that: The lower ends of the chassis (1) and the heat-insulating water tank (16) are both fixedly connected with supporting legs.

5. The air source heat pump automatic control system according to claim 1, characterized in that: The second water pipe (8), the first water pipe (7) and the third water pipe (13) are all wrapped with thermal insulation cotton.

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