A new air source heat pump defrosting and anti-freezing device

Abstract

The utility model discloses a novel air source heat pump defrosting anti -freezing device relates to the field of defrosting prevention of evaporator for heat pump, including the shell, the inside fixed mounting of shell has a plurality of transverse equidistance distribution's cooling fin, the inside of cooling fin is provided with the round hole of the heat exchange copper pipe passing, the fan of wind hole alignment is installed on the front end plate of shell, the top plate of shell is installed with the anti -frosting mechanism that extends to the inner chamber of shell and to the bottom end of shell, and the anti -frosting mechanism is installed below the bottom plate of shell and swings and drives the swing mechanism of anti -frosting mechanism reciprocating rotation. The utility model discloses through setting up swing mechanism, and swing mechanism drives the synchronous rotation of the multiple rotating tubes of anti -frosting mechanism, realizes the hot air reciprocating swing and blows in the frost position, thereby avoided the problem that local cannot carry out effective defrosting.

Description

Technical Field

[0001] This utility model relates to the field of anti-frost in heat pump evaporators, specifically a novel defrosting and antifreeze device for air-source heat pumps. Background Technology

[0002] The area where air source heat pumps are prone to frost formation is the windward side of the evaporator. When the refrigerant flows through the evaporator, it exchanges heat with the outside and absorbs external heat. At this time, moisture in the outside air is easily condensed directly on the low-temperature heat exchange copper tubes, forming frost.

[0003] In existing technologies, when frost forms, it can easily affect the heat exchange efficiency of the evaporator. There are multiple ways to solve this problem. One way is to spray heated gas onto the frost-covered area to melt the frost. However, the frost-covered area is relatively large, and in existing technologies, the spray angle of the hot air remains unchanged. Therefore, the hot air cannot reach the four corners, resulting in localized failure to effectively defrost. Utility Model Content

[0004] The purpose of this utility model is to provide a novel air source heat pump defrosting and antifreeze device in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel air source heat pump defrosting and antifreeze device, comprising a housing, wherein multiple horizontally equidistant heat sinks are fixedly installed inside the housing, and the heat sinks have circular holes through which heat exchange copper tubes pass. A fan with aligned air vents is installed on the front end plate of the housing, and an anti-frost mechanism is installed above the top plate of the housing, penetrating into the inner cavity of the housing and extending to the bottom end of the housing. A swing mechanism for driving the anti-frost mechanism to reciprocate is installed below the bottom plate of the housing.

[0006] As a further embodiment of this utility model: the anti-frost mechanism includes an air inlet pipe installed on the top of the outer shell top plate, and a fixed pipe is fixedly installed at multiple output ends of the air inlet pipe. A rotating pipe is rotatably installed at the output end of the fixed pipe, extending through to the bottom of the outer shell bottom plate. Multiple air holes are vertically and equidistantly opened on the side of the rotating pipe facing the heat exchange copper tube.

[0007] As a further improvement of this utility model: the input end of the fan is connected to an air pump through a pipe, and the air pump is used to deliver heated air to the anti-frost mechanism.

[0008] As a further embodiment of this utility model: the swing mechanism includes a rotary motor mounted on the bottom end of the base plate of the outer shell via a bracket, an incomplete gear is fixedly mounted on the output end of the rotary motor, a driven gear is provided on the outer periphery of the incomplete gear, the driven gear is fixedly mounted on the bottom end of one of the outermost rotating tubes, and a torsion spring is engaged between the top end of the driven gear and the base plate of the outer shell.

[0009] As a further embodiment of this utility model: the swing mechanism further includes a rotating disk fixedly installed at the bottom of the other plurality of air holes, the driven gear is connected to the adjacent rotating disk through a transmission, the two adjacent rotating disks are connected by rotation, and both ends are eccentrically rotatably connected to the bottom of the driven gear or the rotating disk.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up a swing mechanism, the swing mechanism drives multiple rotating tubes of the anti-frost mechanism to rotate synchronously, so as to realize the hot air swinging back and forth to blow on the frosted position, thereby avoiding the problem that some areas cannot be effectively defrosted. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the installation of the heat sink of this utility model; Figure 3 This is a schematic diagram of the installation of the swing mechanism of this utility model; Figure 4 This is a schematic diagram of the rotating connection between the fixed tube and the rotating tube of this utility model.

[0012] In the diagram: 1. Outer casing; 2. Fan; 3. Inlet pipe; 4. Fixed pipe; 5. Rotating pipe; 6. Heat exchange copper pipe; 7. Heat sink; 8. Air vent; 9. Driven gear; 10. Rotating disk; 11. Torsion spring; 12. Incomplete gear; 13. Rotary motor. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1-4In this embodiment of the present invention, a novel air source heat pump defrosting and antifreeze device includes a housing 1. Multiple horizontally equidistant heat sinks 7 are fixedly installed inside the housing 1. The heat sinks 7 have round holes through which heat exchange copper tubes 6 pass. A fan 2 with aligned air vents is installed on the front end plate of the housing 1. An anti-frost mechanism is installed above the top plate of the housing 1, penetrating into the inner cavity of the housing 1 and extending to the bottom of the housing 1. A swing mechanism that drives the anti-frost mechanism to reciprocate is installed below the bottom plate of the housing 1.

[0015] In this embodiment: First, the operating principle of the air source heat pump is as follows: After the liquid refrigerant is depressurized by the expansion valve, it enters the evaporator, absorbs heat from the air at low temperature, and evaporates into a low-temperature, low-pressure gaseous refrigerant. Then, the gaseous refrigerant is drawn into the compressor and compressed into a high-temperature, high-pressure gaseous refrigerant. The high-pressure gaseous refrigerant enters the condenser to release heat, and then condenses into a high-temperature, high-pressure liquid refrigerant. It is then depressurized by the expansion valve and returns to the evaporator. During the above process, when the fan 2 drives the airflow and comes into contact with the evaporator, the moisture in the air will come into direct contact with the heat sink 7 and the heat exchange copper tube 6. At this time, the moisture is easy to condense directly on the heat sink 7 and the heat exchange copper tube 6, forming a frosting phenomenon. Frosting will lead to a decrease in the heat exchange efficiency of the evaporator. If frost forms at this time, the anti-frost mechanism is activated, and the swing mechanism is also activated. The swing mechanism drives the anti-frost mechanism to swing back and forth at different angles, thereby further expanding the range of hot air blown out by the anti-frost mechanism and melting the frost.

[0016] Please refer to this carefully. Figure 1 , Figure 2 , Figure 3 and Figure 4 The anti-frost mechanism includes an air inlet pipe 3 installed on the top of the top plate of the outer casing 1. Multiple output ends of the air inlet pipe 3 are fixedly installed with fixed pipes 4. The output ends of the fixed pipes 4 are rotatably installed with rotating pipes 5 that penetrate to the bottom plate of the outer casing 1. Multiple air holes 8 are vertically and equidistantly opened on the side of the rotating pipe 5 facing the heat exchange copper tube 6. The input end of the fan 2 is connected to the air pump through a pipe. The air pump is used to deliver heated air to the anti-frost mechanism.

[0017] In this embodiment: When performing defrosting or anti-frost operations, the air pump is started, which draws in external hot air (the external hot air can be generated by electric heating of the resistance wire). The air pump delivers the hot air through the pipe to the air inlet pipe 3, and then from the multiple output ends of the air inlet pipe 3 into the fixed pipe 4, and then through the fixed pipe 4 into the rotating pipe 5, and finally sprays it out from the air hole 8. The sprayed hot air acts on the frost or the heat sink 7 and the heat exchange copper tube 6, and the heat can melt the frost or heat the heat sink 7 and the heat exchange copper tube 6 to prevent the occurrence of frost.

[0018] Please refer to this carefully. Figure 3 The swing mechanism includes a rotary motor 13 mounted on the bottom of the base plate of the outer casing 1 via a bracket. An incomplete gear 12 is fixedly mounted on the output end of the rotary motor 13. A driven gear 9 is provided on the outer periphery of the incomplete gear 12. The driven gear 9 is fixedly mounted on the bottom end of a rotating tube 5 located on the outermost side. A torsion spring 11 is engaged between the top end of the driven gear 9 and the base plate of the outer casing 1. The swing mechanism also includes a rotating disk 10 fixedly mounted on the bottom end of several other air holes 8. The driven gear 9 and the adjacent rotating disk 10 are connected by a transmission 14. Two adjacent rotating disks 10 are rotatably connected by 14. Both ends of 14 are eccentrically rotatably connected to the bottom end of the driven gear 9 or the rotating disk 10.

[0019] In this embodiment: while using the anti-frost mechanism, the rotary motor 13 is started. The rotary motor 13 drives the incomplete gear 12 to rotate. The teeth of the incomplete gear 12 are distributed on a 30-degree arc. During the rotation of the incomplete gear 12, it meshes with the driven gear 9. At this time, the driven gear 9 can be driven to rotate. The driven gear 9 can drive the rotating tube 5 coaxially connected to its top to rotate. At the same time, the rotating driven gear 9 drives the adjacent rotating disk 10 to rotate through the connecting rod 14. The rotating disk 10 then drives multiple other rotating disks 10 to rotate synchronously through other connecting rods 14. During the above process, the rotating driven gear 9 drives the bottom end of the torsion spring 11 to rotate synchronously, while the top of the torsion spring 11 remains stationary. At this time, the torsion spring 11 is twisted. When the incomplete gear 12 and the driven gear 9 are separated from the meshing state, the torsion spring 11 is reset, so that the driven gear 9 drives the connected rotating tube 5 to reset. At the same time, the driven gear 9 drives the adjacent rotating disk 10 to reset through the connecting rod 14. The rotating disk 10 drives other rotating disks 10 to rotate and reset through another connecting rod 14. Therefore, the range of hot air dissipation is increased, and the defrosting efficiency is improved. The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A novel air-source heat pump defrosting and antifreeze device, comprising a housing (1), characterized in that, The shell (1) is fixedly installed with multiple horizontally equidistant heat sinks (7). The heat sinks (7) have round holes for the heat exchange copper tubes (6) to pass through. The front end plate of the shell (1) is equipped with a fan (2) with aligned air holes. The top plate of the shell (1) is equipped with an anti-frost mechanism that penetrates into the inner cavity of the shell (1) and extends to the bottom of the shell (1). The bottom plate of the shell (1) is equipped with a swing mechanism that drives the anti-frost mechanism to rotate back and forth.

2. The novel air-source heat pump defrosting and antifreeze device according to claim 1, characterized in that, The anti-frost mechanism includes an air inlet pipe (3) installed on the top of the top plate of the outer shell (1). Multiple output ends of the air inlet pipe (3) are fixedly installed with fixed pipes (4). The output ends of the fixed pipes (4) are rotatably installed with rotating pipes (5) that penetrate to the bottom plate of the outer shell (1). Multiple air holes (8) are vertically and equidistantly opened on the side of the rotating pipe (5) facing the heat exchange copper tube (6).

3. A novel air-source heat pump defrosting and antifreeze device according to claim 2, characterized in that, The input end of the fan (2) is connected to the air pump through a pipe, and the air pump is used to deliver heated air to the anti-frost mechanism.

4. A novel air-source heat pump defrosting and antifreeze device according to claim 3, characterized in that, The swing mechanism includes a rotary motor (13) mounted on the bottom of the base plate of the outer shell (1) via a bracket. An incomplete gear (12) is fixedly mounted on the output end of the rotary motor (13). A driven gear (9) is provided on the outer periphery of the incomplete gear (12). The driven gear (9) is fixedly mounted on the bottom end of one of the outermost rotating tubes (5). A torsion spring (11) is engaged between the top end of the driven gear (9) and the base plate of the outer shell (1).

5. A novel air-source heat pump defrosting and antifreeze device according to claim 4, characterized in that, The swing mechanism also includes a rotating disk (10) fixedly installed at the bottom of the plurality of air holes (8). The driven gear (9) is connected to the adjacent rotating disk (10) via (14). The two adjacent rotating disks (10) are rotatably connected via (14). Both ends of (14) are eccentrically rotatably connected to the bottom of the driven gear (9) or the rotating disk (10).

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