Precooling defrosting device based on refrigerating machine

Abstract

The pre-cooling defrosting device comprises a control box, a water storage pool and a high-pressure tank body, a water pump and a water tank are installed in the control box, the water tank is communicated with the water storage pool through a water pipe, the input end of the water pump is communicated with the water tank through a water pipe, and the output end of the water pump is communicated with the high-pressure tank body. The output end of the water pump communicates with a filtering device through a water pipe, and the filtering device communicates with a first electric control valve through a water pipe. Defrosting operation is conducted through high-pressure steam sprayed out after the interior of the high-pressure tank body is heated, it is guaranteed that the steam can rapidly reach the defrosting operation face through air pressure, heat loss is small, the temperature difference is high, the temperature around the steam device is rapidly increased, and the defrosting efficiency is improved; through cooperation of the electric control valve, the control terminal and the filtering device, the water in the water tank is supplemented with melted frost water, water is saved, and meanwhile the evaporator is prevented from being eroded by the used water through filtering.

Description

Technical Field

[0001] The utility model relates to the field of refrigerator defrosting, in particular to a precooling and defrosting device based on a refrigerator. Background Art

[0002] After the refrigerator has been running for a period of time, a layer of frost will condense on the pipes and fins of its evaporator. Therefore, the refrigerator must be defrosted after running for a period of time in order to maintain the normal heat exchange function of the evaporator. The usual defrosting method is as follows: the electric heating tube generates heat energy, and the heat energy is used to contact the evaporator with the electric heating tube, and the evaporator is defrosted with the heat energy generated by the electric heating tube. This defrosting method is inefficient, and the electric heating tube uses heat conduction from the outside to the inside to defrost, and the fins it contacts are less than one-tenth, and the remaining heat energy of the fins that are not contacted will be dissipated into the air. The design of the electric heating tube cannot exceed the compressor load, otherwise it will cause electrical hazards. Therefore, it is impossible to increase the size of the electric heating tube to improve the electric defrosting effect, so the general defrosting time is often extended. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the electric heating tube contacts the evaporator for defrosting, which has low efficiency and long defrosting time.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a pre-cooling and defrosting device based on a refrigerator, including a control box, a water reservoir and a high-pressure tank body, a water pump and a water tank are installed inside the control box, the water tank is connected to the water reservoir through a water pipe, the input end of the water pump is connected to the water tank through a water pipe, the output end of the water pump is connected to a filter device through a water pipe, the filter device is connected to a first electric-controlled valve through a water pipe, the first electric-controlled valve is connected to the high-pressure tank body through a water pipe, an electric heating device is installed inside the high-pressure tank body, a mounting bracket is installed on the side of the high-pressure tank body, and the high-pressure tank The side of the body is connected with a pressure relief valve and a drain valve, both sides of the top of the water reservoir are provided with slide grooves with linear guide rails assembled inside, a base is installed at the moving end of the linear guide rail assembled inside the slide groove, a mounting box with a box mouth facing downward is installed on the top of the base, two springs are symmetrically installed on the bottom surface of the mounting box, a scraper is commonly installed at the bottom end of the two springs, a roller is installed on the fixed axis rotation at the bottom of the scraper, the top of the water tank is connected with a second electrically-controlled valve through a water pipe extending to the outside of the control box, and an electric heating device, a water pump, a first electrically-controlled valve, a second electrically-controlled valve and a control terminal electrically connected to the linear guide rail are installed inside the control box.

[0005] The utility model is further configured such that a slope with an inclined angle close to the control box is provided inside the water reservoir, and the bottom surface of the scraper is parallel to the slope provided inside the water reservoir. The provided slope allows the frost water melted on the evaporator to flow to the pipe connected to the water tank, thereby facilitating the replenishment of water to the water tank.

[0006] The utility model is further configured such that the bottom surface of the scraper is provided with an arc-shaped groove matching the roller, and the arc-shaped groove is configured to hide part of the volume of the roller without affecting the use of the roller, so that the scraper can be as close to the inclined surface of the water tank as possible.

[0007] The utility model is further configured such that the drainage valve is disposed on the high-pressure tank body at a position facing the ground, and water can be drained into the water reservoir when drainage is performed inside the high-pressure tank body.

[0008] The utility model is further configured such that the installation position of the mounting bracket on the high-pressure tank body is perpendicular to the installation position of the drain valve on the high-pressure tank body.

[0009] The utility model is further configured such that the setting position of the pressure relief valve on the high-pressure tank body is parallel to the setting position of the mounting bracket on the high-pressure tank body and is higher than the setting position of the electric heating device on the high-pressure tank body, so that the pressure relief valve can face the evaporator after the high-pressure tank body is installed.

[0010] The utility model is further configured that a liquid level sensor electrically connected to the control terminal is arranged inside the water tank, and the water level height in the water tank is monitored by the liquid level sensor.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. The utility model performs defrosting operation by spraying high-pressure steam after heating the inside of the high-pressure tank. The air pressure ensures that the steam can quickly reach the defrosting operation surface with small heat loss and high temperature difference, so that the temperature around the steamer rises quickly and the defrosting efficiency is improved;

[0013] 2. The utility model uses melted frost water to replenish the water volume of the water tank through the water storage tank, combined with a movable scraper, an electric control valve, a control terminal and a filtering device, thereby saving water and preventing the water used from corroding the evaporator through filtering. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a front view of the high-pressure tank structure of the utility model;

[0016] Figure 3 This is a top view of the high-pressure tank structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the control box of the utility model;

[0018] Figure 5 This is a cross-sectional view of the internal structure of the installation box of the utility model.

[0019] In the figure: 1. control box; 2. water reservoir; 3. high-pressure tank; 4. water pump; 5. water tank; 6. filtering device; 7. first electric-controlled valve; 8. electric heating device; 9. mounting bracket; 10. pressure relief valve; 11. drain valve; 12. slide; 13. base; 14. mounting box; 15. spring; 16. scraper; 17. roller; 18. second electric-controlled valve; 19. control terminal. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] See also Figures 1 to 5 A precooling and defrosting device based on a refrigerator comprises a control box 1, a water reservoir 2 and a high-pressure tank body 3. A water pump 4 and a water tank 5 are installed inside the control box 1. A liquid level sensor electrically connected to a control terminal 19 is arranged inside the water tank 5. The water level inside the water tank 5 is monitored by the liquid level sensor so that the control terminal 19 controls a second electrically-controlled valve 18 to inject water into the water tank 5. The water tank 5 is connected to the water reservoir 2 through a water pipe. The input end of the water pump 4 is connected to the water tank 5 through a water pipe. The output end of the water pump 4 is connected to a filter device 6 through a water pipe. The filter device 6 filters the water quality entering the high-pressure tank body 3 to avoid erosion of the evaporator due to poor water quality. The filter device 6 is connected to a first electrically-controlled valve 7 through a water pipe. The first electrically-controlled valve 7 is connected to the high-pressure tank body 3 through a water pipe. When the area of ​​the evaporator is large, multiple high-pressure tank bodies 3 can be connected to the filter device 6 through a shunt pipe as needed to expand the coverage.

[0022] like Figures 1 to 3As shown, an electric heating device 8 is installed inside the high-pressure tank body 3, and the electrical interface of the electric heating device 8 extends to the outside of the high-pressure tank body 3. A mounting bracket 9 is installed on the side of the high-pressure tank body 3. The side of the high-pressure tank body 3 is connected with a pressure relief valve 10 and a drain valve 11. The setting position of the drain valve 11 on the high-pressure tank body 3 faces the ground, so that when the high-pressure tank body 3 is not in use, the water stored in the high-pressure tank body 3 can be discharged. The setting position of the mounting bracket 9 on the high-pressure tank body 3 is perpendicular to the setting position of the drain valve 11 on the high-pressure tank body 3. The setting position of the pressure relief valve 10 on the high-pressure tank body 3 is parallel to the setting position of the mounting bracket 9 on the high-pressure tank body 3 and is higher than the setting position of the electric heating device 8 on the high-pressure tank body 3, so that the pressure relief valve 10 can work normally and the position of the pressure relief valve 10 can face the evaporator.

[0023] Both sides of the top of the water reservoir 2 are provided with a slide 12 with a linear guide rail mounted inside. The movable end of the linear guide rail mounted inside the slide 12 is installed with a base 13. The top of the base 13 is installed with a mounting box 14 with the box opening facing downward. Two springs 15 are symmetrically mounted on the bottom surface of the mounting box 14. The bottom ends of the two springs 15 are jointly installed with a scraper 16. Figure 1 As shown, the interior of the water reservoir 2 is provided with an inclined surface at an inclined angle close to the control box 1, and the bottom surface of the scraper 16 is parallel to the inclined surface provided inside the water reservoir 2, so that the scraper 16 can slide smoothly on the inclined surface provided in the water reservoir 2, and a roller 17 is installed on the bottom of the scraper 16 for rotation on a fixed axis. The bottom surface of the scraper 16 is provided with an arc-shaped groove matching the roller 17. The groove is provided so that part of the volume of the roller 17 can be hidden during installation, so that the bottom surface of the scraper 16 can fit the internal inclined surface of the water reservoir 2 as closely as possible.

[0024] The top of the water tank 5 is connected to a second electrically controlled valve 18 through a water pipe extending to the outside of the control box 1. The control box 1 is internally installed with an electric heating device 8, a water pump 4, a first electrically controlled valve 7, a second electrically controlled valve 18 and a control terminal 19 electrically connected to the linear guide rail.

[0025] When the utility model is in use, the high-pressure tank body 3 is installed inside the refrigerator through the mounting bracket 9, and the pressure relief valve 10 of the high-pressure tank body 3 is made to face the evaporator, and then the external water source is connected to the water tank 5 through the second electric control valve 18. When defrosting, the water in the water tank 5 is sent to the high-pressure tank body 3 through the water pump 4, and the flowing water enters the high-pressure tank body 3 after being filtered by the filter device 6. After the water filling is completed, the electric heating device 8 heats the inside of the high-pressure tank body 3 under the action of the control terminal 19. When the internal pressure of the high-pressure tank body 3 reaches a certain value, the pressure relief valve 10 depressurizes and sprays high-temperature steam onto the evaporator. Due to the air pressure, the steam can quickly contact the frost, and the high temperature has a large temperature difference with the frost. The steam is sprayed at intervals, which also leaves time for the frost to melt, so that efficient defrosting can be performed. The water reservoir 2 in this device is placed under the evaporator to collect the melted frost water. At the same time, the linear guide in the slide 12 is controlled by the control terminal 19 to move, so that the scraper 16 in the installation box 14 moves, and the frost water is sent to the water tank 5 through the internal inclined quota of the water reservoir 2 and the moving scraper 16 to replenish the water volume.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pre-cooling and defrosting device based on a refrigerator, comprising a control box (1), a water reservoir (2) and a high-pressure tank (3), Features: A water pump (4) and a water tank (5) are installed inside the control box (1); the water tank (5) is connected to the water reservoir (2) through a water pipe; the input end of the water pump (4) is connected to the water tank (5) through a water pipe; the output end of the water pump (4) is connected to a filter device (6) through a water pipe; the filter device (6) is connected to a first electric control valve (7) through a water pipe; the first electric control valve (7) is connected to the high-pressure tank body (3) through a water pipe; an electric heating device (8) is installed inside the high-pressure tank body (3); a mounting bracket (9) is installed on the side of the high-pressure tank body (3); a pressure relief valve (10) and a drain valve (11) are connected to the side of the high-pressure tank body (3); both sides of the top of the water reservoir (2) are provided with internal assembly straight pipes. The invention relates to a slide groove (12) of a linear guide rail, wherein a base (13) is installed at the movable end of the linear guide rail assembled inside the slide groove (12), a mounting box (14) with the box opening facing downwards is installed on the top of the base (13), two springs (15) are symmetrically installed on the bottom surface of the mounting box (14), a scraper (16) is installed at the bottom ends of the two springs (15), a roller (17) is installed at the bottom of the scraper (16) for fixed axis rotation, the top of the water tank (5) is connected to a second electric control valve (18) through a water pipe extending to the outside of the control box (1), and an electric heating device (8), a water pump (4), a first electric control valve (7), a second electric control valve (18) and a control terminal (19) electrically connected to the linear guide rail are installed inside the control box (1).

2. A pre-cooling and defrosting device based on a refrigerator according to claim 1, Features: The interior of the water reservoir (2) is provided with an inclined surface at an inclined angle close to the control box (1), and the bottom surface of the scraper (16) is parallel to the inclined surface provided inside the water reservoir (2).

3. A pre-cooling and defrosting device based on a refrigerator according to claim 1, Features: The bottom surface of the scraper (16) is provided with an arc-shaped groove matching the rotating roller (17).

4. A pre-cooling and defrosting device based on a refrigerator according to claim 1, Features: The drainage valve (11) is disposed on the high-pressure tank (3) at a position facing the ground.

5. A pre-cooling and defrosting device based on a refrigerator according to claim 1, Features: The installation position of the mounting bracket (9) on the high-pressure tank body (3) is perpendicular to the installation position of the drain valve (11) on the high-pressure tank body (3).

6. A pre-cooling and defrosting device based on a refrigerator according to claim 1, Features: The position at which the pressure relief valve (10) is arranged on the high-pressure tank body (3) is parallel to the position at which the mounting bracket (9) is arranged on the high-pressure tank body (3) and is higher than the position at which the electric heating device (8) is arranged on the high-pressure tank body (3).

7. A pre-cooling and defrosting device based on a refrigerator according to claim 1, Features: A liquid level sensor electrically connected to the control terminal (19) is arranged inside the water tank (5).

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