Air source heat pump device for aquaculture

Abstract

The invention relates to the technical field of heat pump units, and particularly discloses an air source heat pump device for aquaculture, which comprises a case, an evaporator device, a compressor and a condenser device, the evaporator device comprises an inner cylinder and a heat preservation cylinder which are concentrically arranged, an annular evaporator is arranged between the inner cylinder and the heat preservation cylinder, and a spiral heating wire is arranged on the inner wall of the heat preservation cylinder; a strip-shaped through opening is formed in the outer circle face of the inner cylinder, an annular filtering layer covering the strip-shaped through opening is arranged on the inner wall of the inner cylinder, the upper end of the inner cylinder is connected with an air inlet main pipe through an air inlet guide pipe, and the end of the air inlet main pipe is connected with a first draught fan arranged on the outer side of the machine box. According to the air source heat pump device, dust is prevented from being attached to the surface of the annular evaporator to affect the subsequent heat exchange effect, the heating starting speed during aquaculture in winter is increased, the good heat preservation and defrosting effects are achieved, and the heating effect and operation stability of the whole air source heat pump device are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of heat pump units, and in particular discloses an air source heat pump device for aquaculture. Background Art

[0002] Air source heat pump is a device that realizes heating and cooling based on the reverse Carnot cycle principle. In the process of aquaculture, the water in the aquaculture pond needs to be heated in winter to maintain a suitable aquaculture temperature. Air source heat pumps are widely used in the field of aquaculture due to their high efficiency, energy saving and environmental protection. However, due to the influence of harsh environment, the existing air source heat pumps still have problems such as slow heating start-up speed, severe dust adhesion on the evaporator surface and frost when used in aquaculture.

[0003] The invention patent with application number 202311085562.6 discloses an air source heat pump unit for marine aquaculture, including an air source heat pump unit body, an air inlet, a temperature control auxiliary component, and a temperature control adjustment mechanism. The air source heat pump unit body is provided with an air inlet, and the air inlet is fixedly connected with a temperature control adjustment mechanism. The temperature control adjustment mechanism regulates and heats the incoming cold air, and the temperature control adjustment mechanism is connected to the temperature control auxiliary component, and the temperature control auxiliary component filters the incoming wind. Although the air source heat pump unit disclosed in the patent can filter the air using the temperature control auxiliary component, avoiding the problem of dust adhering to the surface of the evaporator and affecting the heat exchange effect, the temperature control auxiliary component is prone to cause excessive resistance at the air inlet after filtering the air for a period of time, and the temperature control auxiliary component needs to be cleaned and maintained. In addition, when it is used for aquaculture in winter, there is a slow heating start-up speed, and the problem of frost on the surface of the fins in the evaporator cannot be effectively solved, which seriously restricts its stable operation outdoors for a long time. Therefore, in view of the technical problems existing in the use of existing air source heat pumps in aquaculture, the present application proposes an air source heat pump device for aquaculture that can effectively solve the above problems. Summary of the invention

[0004] The present invention aims to provide an air source heat pump device for aquaculture, so as to solve the problems of slow heating start-up speed, severe dust adhesion on the evaporator surface and frost when the existing air source heat pump is used for aquaculture.

[0005] The present invention is achieved through the following technical solutions: An air source heat pump device for aquaculture, comprising a case, an evaporator device, a compressor and a condenser device, wherein the evaporator device comprises an inner cylinder and a heat preservation cylinder arranged concentrically, an annular evaporator is arranged in the annular gap between the inner cylinder and the heat preservation cylinder, a spiral heating wire aligned with the annular evaporator is arranged on the inner wall of the heat preservation cylinder, a plurality of strip-shaped openings are evenly opened on the outer circumferential surface of the inner cylinder, and an annular filter layer covering the strip-shaped openings is arranged on the inner wall of the inner cylinder, the upper end of the inner cylinder is connected to an air intake manifold through an air intake duct, and the end of the air intake manifold is connected to a first fan arranged outside the case; A wind collecting hood is arranged on the side of the chassis, and a hot air distribution pipe is connected to the outer end of the wind collecting hood. The condenser device is arranged in the wind collecting hood, and the condenser device and the annular evaporator are both connected to the compressor. A second fan is installed inside the chassis and is arranged opposite to the wind collecting hood.

[0006] As a further configuration of the above scheme, the interior of the chassis is divided into a heat absorption zone and a heat release zone by a partition, the evaporator device is arranged in the heat absorption zone, the first fan is arranged outside the heat absorption zone, the compressor and the condenser device are arranged in the heat release zone, an air outlet is provided on the top wall of the heat absorption zone, an air inlet is provided on the side wall of the heat release zone on the opposite side of the air collecting hood, and the second fan is arranged between the air inlet and the air collecting hood.

[0007] As a further configuration of the above scheme, the bottom of the inner cylinder is connected to a dust collecting hopper, the lower end of the dust collecting hopper is provided with an electric control valve, the top of the inner cylinder is concentrically connected to an end pipe, the air intake duct is connected to the side end of the end pipe, a cleaning shaft extending from the end pipe is rotatably arranged in the inner cylinder, a brush strip with bristles on the side that acts on the annular filter layer is connected to the cleaning shaft, and the top of the cleaning shaft extending from the inner cylinder is connected to a cleaning drive assembly.

[0008] As a further configuration of the above scheme, the cleaning drive assembly includes a cleaning motor arranged on the upper surface of the chassis, a driving wheel is arranged on the motor shaft of the cleaning motor, a driven wheel is arranged at the top of the cleaning shaft, and a transmission belt is arranged between the driving wheel and the driven wheel.

[0009] As a further configuration of the above solution, a dust receiving drawer slot extending into the interior of the chassis is provided at the lower end of the chassis, and the dust receiving drawer slot is located directly below the evaporator device.

[0010] As a further configuration of the above scheme, the annular evaporator includes a plurality of annular fins spaced apart from each other, a plurality of evaporation tubes arranged in an annular array and connected end to end penetrate the plurality of annular fins, and both ends of the evaporation tubes are connected to the compressor via a conduit.

[0011] As a further configuration of the above scheme, the condenser device includes a plurality of strip fins spaced apart from each other vertically, condensing tubes are arranged windingly between the plurality of strip fins, and both ends of the condensing tubes are connected to the compressor through pipelines and expansion valves.

[0012] As a further configuration of the above scheme, the hot air distribution pipe includes a gas main pipe connected to the wind gathering hood, and the lower end of the gas main pipe is connected to a row of gas distribution branch pipes, and each of the gas distribution branch pipes is provided with an exhaust hole.

[0013] During operation of the air source heat pump device for aquaculture disclosed by the present invention, the first fan delivers outside air into the inner cylinder along the air intake main pipe, and then the air is filtered by the annular filter layer and discharged from the strip-shaped openings around the outer cylindrical surface of the inner cylinder, and then the air is heat exchanged with the annular evaporator and discharged from the top opening of the insulation cylinder.

[0014] When the ambient temperature is low, the user can turn on the auxiliary heating function through the control panel on the chassis, so that the spiral heating wire on the inner wall of the insulation cylinder is powered on and heated, so that the heat generated by the spiral heating wire can also be absorbed by the annular evaporator at the same time, thereby increasing the startup speed of the entire heat pump device. When frost appears on the surface of the annular evaporator, the user can also turn on the auxiliary heating function to melt the frost on the annular evaporator through the heat generated by the spiral heating wire.

[0015] In addition, when there is dust in the external environment or the entire air source heat pump device has been running for a period of time, the user can turn on the one-touch cleaning button through the control panel on the chassis. At this time, the electric control valve is opened, the cleaning motor starts to run, and then the cleaning shaft rotates under the power transmission of the transmission belt. During the rotation of the cleaning shaft, the inner wall of the annular filter layer will be brushed and cleaned by the bristles on the outer surface of the brush strip, and the dust swept down can fall into the dust receiving slot through the electric control valve for collection. After the cleaning is completed, the operation button of the air source heat pump device is started again, so that the annular filter layer can always maintain the best filtering effect on the dust in the air, and effectively avoid dust impurities adhering to the surface of the evaporator to affect the heat exchange effect, thereby improving the operating stability of the entire device. Beneficial Effects

[0016] The air source heat pump device disclosed in the present invention adopts an evaporator device with a special structure. During operation, on the one hand, it can filter the outside air flowing through the annular evaporator to prevent dust from adhering to the surface of the annular evaporator and affecting the subsequent heat exchange effect. On the other hand, auxiliary heating is performed through the effects of the insulation tube and the spiral heating wire, which not only improves the heating start-up speed during winter aquaculture, but also can effectively remove frost on the annular evaporator, and has good insulation and defrosting effects.

[0017] The present invention also further improves the design of a special evaporator device. After the evaporator device has been running for a period of time, its interior can be cleaned and the annular filter layer can be cleaned and dusted by the rotating cleaning action of the bristles, so that the evaporator device has a good air filtration effect for a long time, thereby ensuring the heating effect and operating stability of the entire air heat pump device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the external first-angle three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the external second angle three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure inside the chassis of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the evaporator device, compressor, condenser device, etc. in the present invention; Figure 5 It is a schematic diagram of the internal three-dimensional structure of the evaporator device in the present invention; Figure 6 It is a schematic diagram of the internal structure of the three-dimensional cross section of the evaporator device in the present invention. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 6 , and describes the application in detail with reference to embodiments. Example 1

[0022] Example 1 discloses an air source heat pump device for aquaculture, Figures 1 to 3, including a chassis 1, a control panel 2 and a hot air distribution pipe 3. The interior of the chassis 1 is divided into a heat absorption zone 101 and a heat release zone 102 by a partition 4. Several evaporator devices 5 with auxiliary heating functions are arranged side by side in the heat absorption zone 101, and a compressor 6 and a condenser device 7 are arranged in the heat release zone 102.

[0023] Reference Figure 5 and attached Figure 6 The evaporator device 5 includes an inner cylinder 501 and a heat preservation cylinder 502 which are concentrically arranged inside and outside. A plurality of vertically arranged strip-shaped openings 503 are provided in an annular array on the outer circumferential surface of the inner cylinder 501, and an annular filter layer 504 covering the strip-shaped openings 503 is provided on the inner wall of the inner cylinder 501. The top of the inner cylinder 501 extending out of the upper opening of the heat preservation cylinder 502 is connected to an air intake duct 505, and then the air intake ducts 505 on a row of evaporator devices 5 are connected to an air intake manifold 506, and the end of the air intake manifold 506 extending out of the outer end of the chassis 1 is connected to a first fan 507. Under the action of the first fan 507, the gas in the external environment is sent to the inner cylinder 501, and then filtered by the annular filter layer 504 and discharged from the strip-shaped openings 503 around.

[0024] The outer layer of the heat preservation tube 502 is made of heat insulation, and the inner wall is inlaid with a spiral heating wire 508, and the spiral heating wire 508 is arranged at the same height as the strip-shaped opening 503. An annular evaporator 509 is arranged between the heat preservation tube 502 and the inner tube 501. The annular evaporator 509 includes a plurality of annular fins 5091 arranged at intervals from top to bottom, and a plurality of evaporation tubes 5092 arranged in an annular array are connected end to end between the plurality of annular fins 5091. Both ends of the evaporation tubes 5092 in the plurality of evaporator devices 5 are commonly connected to a manifold 5093, and the end of the manifold 5093 is connected to the compressor 6. Finally, an air outlet 103 is also provided on the top wall of the chassis 1 above a row of evaporator devices 5, so that the cold air after absorbing heat by the evaporator device 5 can be discharged from the inside of the heat absorption area 101 through the air outlet 103.

[0025] Reference Figures 1 to 4 An air inlet 104 connected to the heat release area 102 is provided on the left side of the chassis 1, and an air collecting hood 8 aligned with the air inlet 104 is provided on the right side of the chassis 1, and the outer end of the air collecting hood 8 is connected to the hot air pipe 3. A support plate 9 is provided in the heat release area 102 between the air inlet 104 and the air collecting hood 8, and then a second fan 10 aligned with the air inlet 104 and the air collecting hood 8 is provided on the support plate 9. The condenser device 7 is provided in the air collecting hood 8, which includes a plurality of strip fins 701 spaced apart from each other, and an S-shaped condensing tube 702 is provided between the plurality of strip fins 701 in a circuitous manner, and the two ends of the condensing tube 702 are connected to the compressor 6 through a pipeline and an expansion valve.

[0026] Finally, the hot air distribution pipe 3 in this embodiment 1 includes a gas main pipe 301 connected to the end of the air collecting hood 8, a row of gas distribution branch pipes 302 are connected to the lower end of the gas main pipe 301, and an exhaust hole 303 is opened on the upper surface of each gas distribution branch pipe 302.

[0027] During the operation and startup process of the air source heat pump device for aquaculture disclosed in this embodiment 1, the gas in the external environment is sent to the inner cylinder 501 through the first fan 507, and then the gas is filtered by the annular filter layer 504 and discharged from the strip-shaped openings 503 on all sides. At this time, the low-temperature medium in the compressor 6 enters the interior of the evaporation tube 5092, so that the surface of the entire annular evaporator 509 is in a low-temperature state. In the process of the filtered gas flowing from the center of the inner cylinder 501 to the surroundings, it will pass through the annular evaporator 509, so that its own heat is absorbed by the annular evaporator 509, and the low-temperature gas after absorbing heat will eventually be discharged from the entire evaporator device 5 from the upper end opening of the insulation cylinder 502, and discharged from the chassis 1 through the air outlet 103. After the medium that absorbs heat enters the compressor 6 and undergoes heat energy conversion, the high-temperature medium with high temperature and high pressure enters the condenser device 7. At this time, the second fan 10 blows the external gas to the condenser device 7, and after absorbing heat, it is discharged into the aquaculture pond through the hot air pipe 3, which preheats the water body on the one hand and oxygenates the water body on the other hand.

[0028] When the external environment is low and the humidity is high, the auxiliary heat switch panel can be opened through the control panel 2, so that the entire air source heat pump device for aquaculture can start faster. Secondly, it can avoid frosting on the surface of the annular evaporator 509 and ensure the stable operation of the entire heat pump device. Example 2

[0029] Example 2 discloses an air source heat pump device for aquaculture that is further optimized and improved in design based on the technical solution in Example 1. The similarities between it and Example 1 will not be described again.

[0030] Reference Figure 4 , Attachment Figure 5 and attached Figure 6 In this embodiment 2, an ash collecting hopper 510 is connected to the bottom of the inner cylinder 501, and an electric control valve 511 is arranged at the lower end of the ash collecting hopper 510. An end pipe 512 is concentrically connected to the top of the inner cylinder 501, and the air intake duct 505 is connected to the side end of the end pipe 512. A bearing is arranged at the top of the end pipe 512, and a rotating bracket 513 is arranged at the upper end of the ash collecting hopper 510, and then a cleaning shaft 514 is rotatably arranged between the rotating bracket 513 and the bearing. A brush strip 515 which is the same height as the annular filter layer 504 is connected to the cleaning shaft 514 located inside the inner cylinder 501, and bristles which interact with the annular filter layer 504 are arranged on the side of the brush strip 515.

[0031] A driven wheel 516 is connected to the upper end of the end tube 512 of the cleaning shaft 514, a cleaning motor 517 is provided on the upper surface of the chassis 1, and a driving wheel 518 is connected to the lower end of the motor shaft of the cleaning motor 517. A transmission belt 519 is provided on the driving wheel 518 and the driven wheels 516 in a row of evaporator devices 5, so that the cleaning shafts 514 in all evaporator devices 5 can be synchronously driven to rotate by one cleaning motor 517. Finally, a drawer opening is provided at the lower end of the side of the chassis 1, and a dust receiving drawer slot 11 extending to the bottom of the row of evaporator devices 5 is provided in the drawer opening.

[0032] In this embodiment 2, through the above-mentioned design of the evaporator device 5, a layer of dust impurities will be attached to the inner surface of the annular filter layer 504 after each operation for a period of time. At this time, through the one-touch cleaning button on the control panel 2, the electric control valve 511 is first opened, and then the cleaning motor 517 is started to rotate all the cleaning shafts 514. During the rotation of the cleaning shafts 514, the bristles on the side of the brush strip 515 will sweep the dust impurities on the inner surface of the annular filter layer 504, and finally fall into the dust receiving drawer slot 11. The operator can clean the dust receiving drawer slot 11 regularly, and after cleaning, it can be pushed into the heat absorption area 101 again for operation.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air source heat pump device for aquaculture, comprising a chassis, an evaporator device, a compressor and a condenser device, characterized in that: The evaporator device comprises an inner cylinder and a heat preservation cylinder arranged concentrically, an annular evaporator is arranged in the annular gap between the inner cylinder and the heat preservation cylinder, a spiral heating wire aligned with the annular evaporator is arranged on the inner wall of the heat preservation cylinder, a plurality of strip-shaped openings are evenly opened on the outer circumferential surface of the inner cylinder, and an annular filter layer covering the strip-shaped openings is arranged on the inner wall of the inner cylinder, the upper end of the inner cylinder is connected to an air intake manifold through an air intake duct, and the end of the air intake manifold is connected to a first fan arranged outside the chassis; A wind collecting hood is arranged on the side of the chassis, and a hot air distribution pipe is connected to the outer end of the wind collecting hood. The condenser device is arranged in the wind collecting hood, and the condenser device and the annular evaporator are both connected to the compressor. A second fan is installed inside the chassis and is arranged opposite to the wind collecting hood.

2. The air source heat pump device for aquaculture according to claim 1, characterized in that: The interior of the chassis is divided into a heat absorption zone and a heat release zone by a partition, the evaporator device is arranged in the heat absorption zone, the first fan is arranged outside the heat absorption zone, the compressor and the condenser device are arranged in the heat release zone, the top wall of the heat absorption zone is provided with an air outlet, the side wall of the heat release zone on the opposite side of the air collecting hood is provided with an air inlet, and the second fan is arranged between the air inlet and the air collecting hood.

3. The air source heat pump device for aquaculture according to claim 1, characterized in that: The bottom of the inner cylinder is connected to a dust collecting hopper, the lower end of the dust collecting hopper is provided with an electric control valve, the top of the inner cylinder is concentrically connected to an end pipe, the air intake duct is connected to the side end of the end pipe, a cleaning shaft extending out of the end pipe is rotatably provided in the inner cylinder, a brush strip with bristles on the side that acts on the annular filter layer is connected to the cleaning shaft, and the top of the cleaning shaft extending out of the inner cylinder is connected to a cleaning drive assembly.

4. The air source heat pump device for aquaculture according to claim 3, characterized in that: The dust cleaning drive assembly includes a dust cleaning motor arranged on the upper surface of the chassis, a driving wheel is arranged on the motor shaft of the dust cleaning motor, a driven wheel is arranged on the top end of the dust cleaning shaft, and a transmission belt is arranged between the driving wheel and the driven wheel.

5. The air source heat pump device for aquaculture according to claim 3, characterized in that: The lower end of the chassis is provided with a dust receiving drawer slot extending into the interior of the chassis, and the dust receiving drawer slot is located directly below the evaporator device.

6. The air source heat pump device for aquaculture according to claim 1, characterized in that: The annular evaporator comprises a plurality of annular fins spaced apart from each other, a plurality of evaporation tubes arranged in an annular array and connected end to end are passed through the plurality of annular fins, and both ends of the evaporation tubes are connected to the compressor via a conduit.

7. The air source heat pump device for aquaculture according to claim 1, characterized in that: The condenser device comprises a plurality of strip fins spaced apart from each other in an upper and lower direction, condensing tubes are arranged in a circuitous manner between the plurality of strip fins, and both ends of the condensing tubes are connected to the compressor through pipelines and an expansion valve.

8. The air source heat pump device for aquaculture according to claim 1, characterized in that: The hot air distribution pipe comprises a gas main pipe connected to the air collecting hood, the lower end of the gas main pipe is connected to a row of gas distribution branch pipes, and each of the gas distribution branch pipes is provided with an exhaust hole.

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