Refrigerator facilitating frost cleaning

Abstract

The utility model relates to the technical field of refrigerating machines, in particular to a refrigerating machine convenient to clean frost, which comprises a coil pipe shell frame, an evaporator coil pipe is arranged on the coil pipe shell frame, a first side plate and a second side plate are arranged at the lower end of the coil pipe shell frame, a heating and defrosting plate is arranged below the coil pipe shell frame, and a heating wire is arranged in an inner cavity in the heating and defrosting plate. A water falling opening is formed in the heating and defrosting plate, an angle servo motor is arranged on the first side plate, a rotating shaft and a sealing water retaining strip are arranged on the heating and defrosting plate, a control box is arranged on the coil pipe shell frame, a time relay is arranged on the control box, and a water receiving box is installed on the heating and defrosting plate. The situation that normal work of the refrigerating machine is affected due to the fact that people forget to conduct frost cleaning is avoided, the situation that after frost cleaning, molten liquid freely drips into the refrigerating machine body to be accumulated and possibly causes short circuit of related circuit equipment in the refrigerating machine body is avoided, and the situation that heated molten liquid flows away from the side edge of the heating and defrosting plate is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerators, in particular to a refrigerator which is convenient for cleaning frost. Background Art

[0002] A refrigerator is a device used to cool and reduce temperature. It can be used in various applications such as air conditioning, refrigeration and food storage. A refrigerator uses the principles of physics, phase change and heat transfer to remove heat from the surrounding environment and produce a cooling effect.

[0003] When the refrigerator is running, the temperature of its evaporator coil will drop below the freezing point, causing the moisture in the air to freeze into frost on the surface of the evaporator coil. The frost layer will reduce the heat transfer area, reduce the cooling capacity and energy efficiency. Therefore, the evaporator coil on the refrigerator needs to be cleaned and frosted.

[0004] At present, the existing frost cleaning device for the evaporator coil on the refrigerator generally cleans the frost on the surface of the evaporator coil manually. Sometimes people forget to clean the frost, causing frost accumulation on the surface of the evaporator coil and affecting the normal operation of the refrigerator.

[0005] In addition, in the existing frost cleaning device for the evaporator coil of the refrigerator, the melted liquid will drip into the refrigerator body at will after cleaning the frost. Over time, the accumulation of the melted liquid may cause a short circuit in the relevant circuit equipment in the refrigerator body.

[0006] The above problems are widespread and urgently need to be improved. Utility Model Content

[0007] The utility model aims to solve the above-mentioned shortcomings in the prior art and proposes a refrigerator which is convenient for cleaning frosting.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A refrigeration machine which is convenient for cleaning frost is designed, comprising a coil outer shell frame, an evaporator coil is arranged on the coil outer shell frame, a water inlet joint and a water outlet joint are arranged on the evaporator coil, a first side plate and a second side plate are arranged at the lower end of the coil outer shell frame, a heating and defrosting plate is arranged below the coil outer shell frame, a heating wire is arranged in the inner cavity of the heating and defrosting plate, a water outlet is opened on the heating and defrosting plate, an angle servo motor is arranged on the first side plate, a rotating shaft and a sealing water retaining strip are arranged on the heating and defrosting plate, a control box is arranged on the coil outer shell frame, a time relay is arranged on the control box, and a water receiving box is installed on the heating and defrosting plate.

[0010] Furthermore, the rotating shaft is fixedly arranged with the motor shaft of the angle servo motor, and the rotating shaft longitudinally penetrates the heating and defrosting plate and is rotatably arranged with the second side plate.

[0011] Furthermore, the control box, time relay, heating wire, and angle servo motor are electrically connected.

[0012] Furthermore, the top view cross section of the heating and defrost plate is a rectangular structure and the top view size is not less than the top view rectangular opening size of the coil housing frame, and the heating and defrost plate is made of pure copper.

[0013] Furthermore, the top-view cross-section of the drain outlet is a rectangular long open structure and vertically penetrates the heating and defrosting plate. The upper end of the water receiving box is open and connected to the drain outlet. The water receiving box is made of polytetrafluoroethylene (PTFE).

[0014] Furthermore, the sealing water retaining strips are two symmetrically arranged front and back and are in a long strip structure as a whole, and the sealing water retaining strips are made of TPE thermoplastic high elastic plastic material.

[0015] Furthermore, the water receiving box is provided with mounting screws, and two mounting screws are symmetrically arranged. The mounting screws pass through the water receiving box and are threadedly connected and fixed to the heating and defrosting plate.

[0016] The utility model provides a refrigerator that is easy to clean frosting, and has the beneficial effects of:

[0017] 1. The utility model sets a timed electrically controlled rotating heating defrost plate structure, realizes the timed electrically controlled rotation of the heating defrost plate to close and start the heating wire, and then completely heats, melts and cleans the frost on the surface of the evaporator coil, so as to avoid people forgetting to clean the frost and affecting the normal operation of the refrigerator.

[0018] 2. The utility model provides a water droplet and a water receiving box structure on the heating and defrosting plate. When the heating and defrosting is completed, the heating and defrosting plate will be electrically controlled to rotate and reset. At this time, the cleaned liquid will flow along the inclined heating and defrosting plate to the lower left and into the water receiving box, thereby preventing the melted liquid after defrosting from dripping randomly and accumulating in the refrigeration body, which may cause a short circuit in related circuit equipment in the refrigeration body.

[0019] 3. The utility model provides a sealing water retaining strip structure on the side wall of the heating and defrosting plate to prevent the heated and melted liquid from flowing away from the side of the heating and defrosting plate, thereby avoiding leakage when collecting the liquid later. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a first-view stereoscopic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a stereoscopic diagram of the overall structure of the utility model from a second viewing angle;

[0022] Figure 3 It is a three-dimensional schematic diagram of the heating and defrosting plate of the utility model in a rotating and closed state;

[0023] Figure 4 For the utility model Figure 2 A front cross-sectional view of a heating and defrosting plate with a water receiving box;

[0024] Figure 5 It is a three-dimensional schematic diagram of the heating and defrosting plate of the utility model;

[0025] Figure 6 It is a block diagram of the utility model.

[0026] In the figure: 1 coil housing frame; 11 first side plate; 12 second side plate; 2 evaporator coil; 21 water inlet joint; 22 water outlet joint; 3 control box; 31 time relay; 4 angle servo motor; 41 rotating shaft; 5 heating defrosting plate; 51 water outlet; 52 heating wire; 6 water receiving box; 61 mounting screws; 7 sealing water retaining strip. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Reference Figure 1-6 , a refrigerator convenient for cleaning frost, comprises a coil housing frame 1, an evaporator coil 2 is arranged on the coil housing frame 1, a water inlet joint 21 and a water outlet joint 22 are arranged on the evaporator coil 2, a first side plate 11 and a second side plate 12 are arranged at the lower end of the coil housing frame 1, a heating and defrosting plate 5 is arranged below the coil housing frame 1, a heating wire 52 is arranged in the inner cavity of the heating and defrosting plate 5, a water droplet 51 is opened on the heating and defrosting plate 5, an angle servo motor 4 is arranged on the first side plate 11, a rotating shaft 41 and a sealing water retaining strip 7 are arranged on the heating and defrosting plate 5, a control box 3 is arranged on the coil housing frame 1, a time relay 31 is arranged on the control box 3, a water receiving box 6 is installed on the heating and defrosting plate 5, the coil housing frame 1, the evaporator coil 2, the water inlet joint 21 and the water outlet joint 22 are a group, which is the prior art, some existing structures are not drawn and marked, and no further description is required, which are all preset related structures on the refrigerator.

[0029] In detail, the rotating shaft 41 is fixedly arranged with the motor shaft of the angle servo motor 4 , and the rotating shaft 41 longitudinally penetrates the heating and defrost plate 5 and is rotatably arranged with the second side plate 12 , and combined with the angle servo motor 4 , the heating and defrost plate 5 can be stably rotated and positioned.

[0030] Furthermore, the control box 3, time relay 31, heating wire 52, and angle servo motor 4 are electrically connected, a PLC is preset in the control box 3, and a display screen and buttons are preset on the time relay 31, which can realize a preset delayed start time. This is the prior art, and the heating wire 52 is a dry-burning type heating wire, which is durable and has high heating efficiency.

[0031] Furthermore, the top-view cross-section of the heating and defrost plate 5 is a rectangular structure and the top-view surface size is not smaller than the top-view rectangular opening size of the coil housing frame 1. The heating and defrost plate 5 is made of pure copper and has high thermal conductivity. In addition, the lower end surface of the heating and defrost plate 5 is pre-set with an asbestos insulation pad to prevent heat from dissipating downward.

[0032] In more detail, the top cross-section of the drain port 51 is a rectangular long open structure and vertically penetrates the heating and defrosting plate 5. The upper end of the water receiving box 6 is open and connected to the drain port 51, so that the melted liquid is guided to flow into the water receiving box 6.

[0033] The water receiving box 6 is made of polytetrafluoroethylene (PTFE), which is transparent, so that the liquid storage situation can be observed in real time. It is also high temperature resistant, corrosion resistant and durable.

[0034] In general, the sealing water retaining strips 7 are two symmetrically arranged front and back and are in a long strip structure as a whole. The sealing water retaining strips 7 are made of TPE thermoplastic high-elastic plastic material, have high elastic sealing properties, are resistant to high temperature and corrosion, and are non-toxic and environmentally friendly.

[0035] Finally, the water receiving box 6 is provided with mounting screws 61, and two mounting screws 61 are symmetrically arranged. The mounting screws 61 pass through the water receiving box 6 and are threadedly connected and fixed to the heating and defrosting plate 5. When the water receiving box 6 is full of water, the mounting screws 61 are removed and the liquid in the removed water receiving box 6 is poured out, and then it can be installed later.

[0036] Working method: The start time is preset on the time relay 31. After a period of time, the time relay 31 will give a PLC signal in the control box 3, and the PLC in the control box 3 will control the start of the heating wire 52 and the angle servo motor 4. Figure 2 The angle servo motor 4 starts to drive the heating and defrosting plate 5 to rotate clockwise upward by a certain angle through the rotating shaft 41 and then stops. Figure 3The heating and defrosting plate 5 and the coil housing frame 1 are in parallel with each other. At the same time, the heat generated by the started heating wire 52 will be used to heat, melt and clean the frost on the surface of the upper evaporator coil 2 through the heating and defrosting plate 5 made of pure copper. The timing electric control will rotate the heating and defrosting plate 5 upward and close it, and start the heating wire 52. Then, the frost on the surface of the evaporator coil 2 will be heated, melted and cleaned, so as to avoid people forgetting to clean the frost and affecting the normal operation of the refrigerator.

[0037] Moreover, when defrosting is completed, the PLC in the control box 3 will control the closing of the heating wire 52, and will also control the angle servo motor 4 to drive the heating defrosting plate 5 to rotate counterclockwise downward to reset. At this time, the liquid after defrosting falls on the inclined heating defrosting plate 5 and flows to the lower left. The liquid passes through the drain port 51 and enters the water receiving box 6, avoiding the melted liquid after cleaning the frost from dripping randomly and accumulating in the refrigeration body, which may cause a short circuit in the relevant circuit equipment in the refrigeration body.

[0038] In addition, when the heating and defrosting plate 5 rotates upward clockwise and is parallel to the coil housing frame 1, the sealing water retaining strips 7 on both sides will be squeezed and contacted with the lower end surface of the coil housing frame 1 to seal, thereby preventing the heated and melted liquid from flowing away from the side of the heating and defrosting plate 5 and avoiding omissions when collecting the liquid later.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A refrigerator that is easy to clean from frost, comprising a coil housing frame (1), characterized in that: The coil casing frame (1) is provided with an evaporator coil (2), the evaporator coil (2) is provided with a water inlet joint (21) and a water outlet joint (22), the lower end of the coil casing frame (1) is provided with a first side plate (11) and a second side plate (12), a heating and defrosting plate (5) is provided below the coil casing frame (1), a heating wire (52) is provided in the inner cavity of the heating and defrosting plate (5), a water drop outlet (51) is provided on the heating and defrosting plate (5), an angle servo motor (4) is provided on the first side plate (11), a rotating shaft (41) and a sealing water retaining strip (7) are provided on the heating and defrosting plate (5), a control box (3) is provided on the coil casing frame (1), a time relay (31) is provided on the control box (3), and a water receiving box (6) is installed on the heating and defrosting plate (5).

2. A refrigerator that is easy to clean frosting according to claim 1, characterized in that: The rotating shaft (41) is fixedly arranged with the motor shaft of the angle servo motor (4); the rotating shaft (41) longitudinally penetrates the heating and defrosting plate (5) and is rotatably arranged with the second side plate (12).

3. A refrigerator that is easy to clean frosting according to claim 1, characterized in that: The control box (3), the time relay (31), the heating wire (52), and the angle servo motor (4) are electrically connected.

4. A refrigerator that is easy to clean frosting according to claim 1, characterized in that: The top view cross section of the heating and defrost plate (5) is a rectangular structure and the top view size is not less than the top view rectangular opening size of the coil housing frame (1). The heating and defrost plate (5) is made of pure copper.

5. A refrigerator that is easy to clean frosting according to claim 1, characterized in that: The top-view cross-section of the water outlet (51) is a rectangular long open structure and vertically penetrates the heating and defrosting plate (5); the upper end of the water receiving box (6) is open and communicates with the water outlet (51); the water receiving box (6) is made of polytetrafluoroethylene (PTFE).

6. A refrigerator that is easy to clean frosting according to claim 1, characterized in that: The sealing water retaining strips (7) are two symmetrically arranged front and back and are in a long strip structure as a whole. The sealing water retaining strips (7) are made of TPE thermoplastic high elastic plastic material.

7. A refrigerator that is easy to clean frosting according to claim 1, characterized in that: The water receiving box (6) is provided with mounting screws (61), and two mounting screws (61) are symmetrically arranged. The mounting screws (61) pass through the water receiving box (6) and are threadedly connected and fixed to the heating and defrosting plate (5).

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