Defrosting device

Abstract

The utility model provides a defrosting device which comprises a shell, and an evaporator is fixedly connected to the inner wall of the shell. Compared with the prior art, the defrosting device has the advantages that steam doped in air can be removed through an air pump, a heating box, an activated carbon net, a heating pipe and an air conveying pipe in the defrosting assembly, dry hot air is conveyed into an air spraying pipe, and the air spraying pipe sprays the hot air to the surface of the evaporator through a plurality of air spraying openings formed in the surface of the air spraying pipe; in cooperation with a moving motor, a lead screw and a guide rod in the moving assembly, a supporting base is driven to drive the defrosting assembly and a brush to ascend and descend on the surface of the evaporator in a reciprocating mode, and therefore the surface of the evaporator can be defrosted; in addition, due to the fact that the activated carbon net and the brush are arranged, water vapor can be prevented from being accumulated on the surface of the evaporator to the maximum extent, then the phenomenon of frosting again is prevented, the defrosting effect and quality can be improved, and due to the fact that the brush and the moving assembly are fixed through bolts, the brush can be replaced conveniently.

Description

Technical Field

[0001] The utility model relates to a defrosting device, belonging to the field of air source heat pump defrosting. Background Art

[0002] An air source heat pump is a device that uses a small amount of high-grade energy to transfer heat from a low-temperature heat source to a high-temperature heat source. It is mainly composed of a compressor, an expansion valve, an evaporator, and a condenser. It uses air as a heat source to transfer heat from outdoor air to indoors in winter and from indoors to outdoors in summer.

[0003] The evaporator of the air source heat pump will frost in winter because the outdoor temperature is lower than the indoor critical temperature. If it is not defrosted in time, the frost will accumulate more and more and seriously affect its normal operation. In order to avoid this kind of situation, defrosting equipment is usually installed in the air source heat pump.

[0004] Existing defrosting devices usually use sensors to sense ice or frost on the evaporator surface and transmit signals to the electric heating rod for defrosting. However, a large amount of water often accumulates during the defrosting process, and some of the accumulated water will remain on the surface of the evaporator fins, which can easily cause frost to form again, thereby reducing the defrosting effect. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a defrost device to solve the problem in the above-mentioned background technology that a large amount of accumulated water often occurs during the defrosting process, and some of the accumulated water remains on the surface of the evaporator fins, which easily leads to frost again, thereby reducing the defrosting effect.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a defrost device, comprising a shell, an evaporator is fixedly connected to the inner wall of the shell, a moving component is provided on the inner wall of the shell at one end of the evaporator, a defrost component is provided on the top of the moving component, a guide groove is provided on the inner wall of the shell below the evaporator, and a drain pipe is fixedly connected to the bottom end of the guide groove.

[0007] Furthermore, the moving component includes a screw rotatably connected to the inner wall of the shell, one end of the screw extends out of the shell and is fixedly connected to a moving motor, the inner wall of the shell is located on one side of the screw and is fixedly connected to a guide rod, the surface of the guide rod is slidably connected to a support seat, and the support seat and the screw are threadedly connected.

[0008] Furthermore, the defrost assembly includes an air pump fixedly connected to the top of the shell, the top of the shell is located on one side of the air pump and is fixedly connected to a heating box, the inside of the heating box is movably connected to an activated carbon net, the inner wall of the heating box is located on one side of the activated carbon net and is fixedly connected to a heating pipe, the top of the movable assembly is fixedly connected to an air jet pipe, a plurality of air jet ports are provided on the surface of the air jet pipe, air supply pipes are fixedly connected between the shell and the air pump, between the air pump and the heating box, and between the heating box and the shell, a brush is movably connected to the bottom end of the movable assembly, and the brush is fixed to the movable assembly by bolts.

[0009] Furthermore, a photosensitive probe is fixedly connected to one side of the evaporator, and a controller is fixedly connected to the inner wall of the shell.

[0010] Furthermore, the size of the guide groove is larger than that of the evaporator, and the guide groove is trapezoidal.

[0011] Furthermore, a heat preservation layer is fixedly connected to the surface of the heating box, a plurality of baffles are fixedly connected to the inner wall of the heating box, the baffles are made of heat-conducting material, a heat preservation sleeve is provided on the surface of the gas pipe, and the gas pipe is made of elastic material.

[0012] The beneficial effects of the present invention are as follows: when frost forms on the evaporator surface, the vacuum pump, heating box, activated carbon net, heating pipe and air supply pipe in the defrost assembly can remove the moisture mixed in the air and deliver the dry hot air to the jet pipe, which will spray the hot air onto the evaporator surface through a number of jet ports opened on its surface, thereby defrosting the evaporator surface. The moving motor, lead screw and guide rod in the moving assembly will drive the support seat to drive the defrost assembly and the brush to move back and forth on the evaporator surface, thereby not only defrosting the evaporator surface, but also avoiding the accumulation of moisture on the evaporator surface due to the provision of the activated carbon net and the brush, thereby preventing the re-frosting phenomenon, which is beneficial to improving the defrosting effect and quality. The brush is fixed to the moving assembly by bolts, which makes it easy to replace the brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of a defrosting device of the present invention;

[0015] Figure 2 This is a schematic diagram of a side sectional structure of a defrosting device of the present invention;

[0016] Figure 3This is a schematic diagram of a defrost assembly structure of a defrost device according to the present invention;

[0017] Figure 4 This is a schematic diagram of the gas pipe structure of a defrosting device of the present invention.

[0018] In the figure: 1. Shell; 2. Evaporator; 3. Moving assembly; 31. Screw; 32. Moving motor; 33. Guide rod; 34. Support seat; 4. Defrost assembly; 41. Vacuum pump; 42. Heating box; 43. Activated carbon net; 44. Heating pipe; 45. Jet pipe; 46. Gas pipe; 47. Brush; 5. Guide trough; 6. Drain pipe; 7. Photosensitive probe; 8. Insulation layer; 9. Baffle; 10. Insulation cover. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] See also Figures 1 to 4 The utility model provides a technical solution: a defrost device, including a shell 1, an evaporator 2 is fixedly connected to the inner wall of the shell 1, a moving component 3 is provided on the inner wall of the shell 1 at one end of the evaporator 2, a defrost component 4 is provided on the top of the moving component 3, a guide groove 5 is opened on the inner wall of the shell 1 below the evaporator 2, and a drain pipe 6 is fixedly connected to the bottom end of the guide groove 5.

[0021] When frost forms on the surface of the evaporator 2, the vacuum pump 41, heating box 42, activated carbon net 43, heating pipe 44 and air supply pipe 46 in the defrost assembly 4 can remove the moisture mixed in the air and deliver the dry hot air to the jet pipe 45. The jet pipe 45 will spray the hot air to the surface of the evaporator 2 through a number of jet ports opened on its surface, thereby defrosting the surface of the evaporator 2. The moving motor 32, screw 31 and guide rod 33 in the moving assembly 3 will drive the support seat 34 to drive the defrost assembly 4 and the brush 47 to move back and forth on the surface of the evaporator 2, thereby not only defrosting the surface of the evaporator 2, but also because the activated carbon net 43 and the brush 47 are provided, moisture can be avoided to the greatest extent on the surface of the evaporator 2, thereby preventing the phenomenon of frosting again, which is beneficial to improving the defrosting effect and quality. Because the brush 47 is fixed to the moving assembly 3 by bolts, it is convenient to replace the brush 47.

[0022] See also Figures 1 to 4The moving assembly 3 includes a screw 31 rotatably connected to the inner wall of the housing 1. One end of the screw 31 extends out of the housing 1 and is fixedly connected to a moving motor 32. A guide rod 33 is fixedly connected to the inner wall of the housing 1, on one side of the screw 31. A support seat 34 is slidably connected to the surface of the guide rod 33, and the support seat 34 is threadedly connected to the screw 31. The moving motor 32 drives the screw 31 to rotate. Due to the restraint of the guide rod 33, the support seat 34 rises and falls along the surface of the screw 31, thereby driving the defrost assembly 4 to move up and down on the surface of the evaporator 2, ensuring that the hot air completely covers the surface of the evaporator 2.

[0023] The defrost assembly 4 includes an air pump 41 fixedly connected to the top of the shell 1, a heating box 42 fixedly connected to the top of the shell 1 on one side of the air pump 41, an activated carbon net 43 movably connected inside the heating box 42, a heating pipe 44 fixedly connected to the inner wall of the heating box 42 on one side of the activated carbon net 43, an air jet pipe 45 fixedly connected to the top of the movable assembly 3, a plurality of air jet ports are provided on the surface of the air jet pipe 45, an air supply pipe 46 is fixedly connected between the shell 1 and the air pump 41, between the air pump 41 and the heating box 42, and between the heating box 42 and the shell 1, a brush 47 movably connected to the bottom end of the movable assembly 3, and the brush 47 is fixed to the movable assembly 3 by bolts. When frost forms on the surface of the evaporator 2, the vacuum pump 41 will start and extract the air in the shell 1 and transport it to the heating box 42 through the air supply pipe 46. When the air passes through the activated carbon mesh 43, the activated carbon mesh 43 will absorb the water vapor mixed in the air. Then the heating pipe 44 will heat the dry air. Next, the heated air will be transported to the injection pipe 45 through the air supply pipe 46. Finally, the injection pipe 45 will spray hot air to the surface of the evaporator 2 through several injection ports opened on its surface, thereby defrosting the surface of the evaporator 2. The brush 47 will rise and fall with the defrost assembly 4 to sweep away the water remaining on the surface of the evaporator 2. Through the above steps, not only can the surface of the evaporator 2 be defrosted, but also because the activated carbon mesh 43 and the brush 47 are provided, it can avoid the accumulation of water vapor on the surface of the evaporator 2 to the greatest extent, thereby preventing the phenomenon of frosting again, which is beneficial to improving the defrosting effect and quality. Because the brush 47 is fixed to the movable assembly 3 by bolts, it is convenient to replace the brush 47.

[0024] A photosensitive probe 7 is fixedly connected to one side of the evaporator 2, and a controller is fixedly connected to the inner wall of the housing 1. The photosensitive probe 7 monitors the surface of the evaporator 2 in real time. When it detects frost on the surface of the evaporator 2, it transmits a signal to the controller installed in the housing 1. The controller activates the defrost assembly 4 to defrost the surface of the evaporator 2. This can automatically defrost the surface of the evaporator 2, which helps save electricity.

[0025] The size of the guide groove 5 is larger than that of the evaporator 2 and the guide groove 5 is trapezoidal. The size of the guide groove 5 is larger than that of the evaporator 2 to ensure that all the water after defrosting can fall into the guide groove 5. The trapezoidal shape of the guide groove 5 can guide the water in the guide groove 5 to the drain pipe 6.

[0026] The surface of the heating box 42 is fixedly connected to a thermal insulation layer 8, and the inner wall of the heating box 42 is fixedly connected to a number of baffles 9, which are made of heat-conducting material. The surface of the air pipe 46 is covered with a thermal insulation sleeve 10, and the air pipe 46 is made of elastic material. The thermal insulation layer 8 fixedly connected to the surface of the heating box 42 can prevent outside air from affecting the inside of the heating box 42. The baffles 9 fixedly connected to the inner wall of the heating box 42 can extend the air delivery path, thereby extending the heating time of the air. The baffles 9 are made of heat-conducting material and can absorb the heat generated by the heating pipe 44. The surface of the air pipe 46 is covered with a thermal insulation sleeve 10 to prevent outside air from affecting the warm air in the air pipe 46. The air pipe 46 is made of elastic material to prevent the support base 34 from damaging the air pipe 46 connected to the air jet pipe 45 during the movement of the air jet pipe 45.

[0027] Specific implementation: When the surface of the evaporator 2 is frosted, the vacuum pump 41 will start and extract the air in the shell 1 and transport it to the heating box 42 through the air pipe 46. When the air passes through the activated carbon mesh 43, the activated carbon mesh 43 will absorb the water vapor mixed in the air. Then the heating pipe 44 will heat the dry air. Next, the heated air will be transported to the jet pipe 45 through the air pipe 46. Finally, the jet pipe 45 will spray hot air to the surface of the evaporator 2 through a number of jet ports opened on its surface, so as to defrost the surface of the evaporator 2. During this process, the moving motor 32 will drive the screw 31 to rotate. Due to the restriction of the guide rod 33, the support seat 34 will move along the surface of the screw 31. The surface is raised and lowered, thereby driving the defrost component 4 to move up and down on the surface of the evaporator 2, so as to ensure that the hot air can completely cover the surface of the evaporator 2, and the brush 47 will rise and fall with the defrost component 4 to sweep away the water remaining on the surface of the evaporator 2. The water generated by defrosting will eventually fall into the guide groove 5 and be discharged to the outside of the shell 1 through the drain pipe 6. Through the above steps, not only the surface of the evaporator 2 can be defrosted, but also the activated carbon net 43 and the brush 47 can be used to avoid the accumulation of water vapor on the surface of the evaporator 2 to the greatest extent, thereby preventing the phenomenon of frosting again, which is beneficial to improving the defrosting effect and quality. Because the brush 47 is fixed to the moving component 3 by bolts, it is convenient to replace the brush 47.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 methods that can be understood by those skilled in the art.

Claims

1. A defrosting device, comprising a housing (1), an evaporator (2) being fixedly connected to the inner wall of the housing (1), characterized in that: A moving assembly (3) is provided on the inner wall of the shell (1) at one end of the evaporator (2), a defrosting assembly (4) is provided on the top of the moving assembly (3), a guide groove (5) is provided on the inner wall of the shell (1) below the evaporator (2), and a drain pipe (6) is fixedly connected to the bottom end of the guide groove (5).

2. A defrosting device according to claim 1, characterized in that: The moving assembly (3) includes a lead screw (31) rotatably connected to the inner wall of the housing (1), one end of the lead screw (31) extends out of the housing (1) and is fixedly connected to a moving motor (32), the inner wall of the housing (1) is located on one side of the lead screw (31) and is fixedly connected to a guide rod (33), the surface of the guide rod (33) is slidably connected to a support seat (34), and the support seat (34) and the lead screw (31) are threadedly connected.

3. The defrosting device according to claim 1, characterized in that: The defrost assembly (4) includes an air pump (41) fixedly connected to the top of the shell (1); the top of the shell (1) is located on one side of the air pump (41) and is fixedly connected to a heating box (42); an activated carbon net (43) is movably connected inside the heating box (42); an inner wall of the heating box (42) is located on one side of the activated carbon net (43) and is fixedly connected to a heating pipe (44); the top of the movable assembly (3) is fixedly connected to an air jet pipe (45); a plurality of air jet ports are provided on the surface of the air jet pipe (45); an air supply pipe (46) is fixedly connected between the shell (1) and the air pump (41), between the air pump (41) and the heating box (42), and between the heating box (42) and the shell (1); a brush (47) is movably connected to the bottom of the movable assembly (3); the brush (47) and the movable assembly (3) are fixed by bolts.

4. The defrosting device according to claim 1, characterized in that: A photosensitive probe (7) is fixedly connected to one side of the evaporator (2), and a controller is fixedly connected to the inner wall of the shell (1).

5. The defrosting device according to claim 1, characterized in that: The size of the guide groove (5) is larger than the size of the evaporator (2), and the guide groove (5) is trapezoidal.

6. The defrosting device according to claim 3, characterized in that: The surface of the heating box (42) is fixedly connected to a heat-insulating layer (8), the inner wall of the heating box (42) is fixedly connected to a plurality of baffles (9), the baffles (9) are made of a heat-conducting material, the surface of the gas pipe (46) is covered with a heat-insulating sleeve (10), and the gas pipe (46) is made of an elastic material.

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