Air cooler with water pan heated by gravity type heat pipe

Abstract

The utility model discloses an air cooler with a water pan heated by a gravity type heat pipe. An air cooler with a water pan heated by a gravity type heat pipe comprises an air cooler body, the water pan and a heating mechanism. The heating mechanism comprises a heating plate mounted at the bottom of the water pan and a heat pipe evaporator connected with the heating plate; the heating plate comprises an outer shell, an inner shell, a heat insulation layer and a heating coil, and the heating coil is connected with the heat pipe evaporator. According to the air cooler with the water pan heated through the gravity type heat pipe, the heating plate and the heat pipe evaporator are arranged, the heating plate comprising the outer shell, the inner shell, the heat insulation layer and the heating coil pipe is arranged, and the water pan can be conveniently heated through the height difference between the heating coil pipe and the heat pipe evaporator; and the water pan can be effectively prevented from freezing.

Description

Technical Field

[0001] This utility model relates to the field of air cooler technology, and in particular to an air cooler with a water tray heated by a gravity-type heat pipe. Background Technology

[0002] Gravity-type split heat pipes, or simply gravity heat pipes, transfer heat from indoors to outdoors through the natural phase change flow of the refrigerant. Gas-liquid circulation is achieved within the pipes via pressure difference and gravity return, requiring no external power. A gravity heat pipe mainly consists of an evaporator, a condenser, and two connecting sections: a gas riser (gas pipe) and a liquid downcomer (liquid pipe). The rising gas and returning liquid have independent flow channels, flowing simultaneously without interference. The liquid refrigerant absorbs heat from the heat source in the evaporator, becoming a saturated or superheated gas, increasing in pressure. It then flows through the gas riser to the condenser, where it releases heat and liquefies back into liquid. Under gravity, the liquid returns to the evaporator along the liquid downcomer, thus completing the cycle and achieving continuous heat transfer.

[0003] During normal operation of the cold storage refrigeration system, the surface temperature of the heat exchanger of the air cooler is much lower than the dew point temperature of the air. Moisture from the food and air will condense and adhere to the pipe walls. If the pipe wall temperature drops below 0°C, the water condenses into frost, which thickens over time. Therefore, defrosting is necessary. The water generated during defrosting falls onto a drip tray, collects there, and is then discharged outside the cold storage.

[0004] However, during the defrosting process of the evaporative air cooler, if the water drains from the drip tray poorly or if the defrosting water in the drip tray is not completely drained after defrosting, ice will form in the drip tray after the evaporative air cooler restarts cooling. The long-term accumulation of ice in the drip tray will affect the safe operation of the refrigeration system and the normal use of the cold storage.

[0005] Therefore, it is necessary to provide a cold air blower with a water tray heated by a gravity-type heat pipe to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a cold air blower with gravity-type heat pipe heating for the water receiving tray, which can heat the water receiving tray and prevent the water receiving tray from freezing.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] The air cooler with gravity-type heat pipe heating for the water collection tray includes: the air cooler body, the water collection tray and the heating mechanism. The heating mechanism includes a heating plate installed at the bottom of the water collection tray and a heat pipe evaporator connected to the heating plate. The heating plate includes an outer shell, an inner shell, a heat insulation layer and a heating coil. The heating coil is connected to the heat pipe evaporator.

[0009] Preferably, a sealing cap is installed on the top of the inner shell.

[0010] Preferably, a connecting lug is installed on the side of the water receiving tray, and a connecting post is installed on the side of the outer casing, with a plug-in hole provided on the connecting post.

[0011] Preferably, the heat pipe evaporator is equipped with a liquid return pipe and a gas discharge pipe, which are connected to the heating coil.

[0012] Preferably, solenoid valves are installed on both the liquid return pipe and the gas discharge pipe, and the solenoid valves are connected to the heat pipe evaporator.

[0013] Preferably, the top of the water receiving tray is provided with a first slope and two second slopes, and a drain pipe is installed between the two second slopes.

[0014] Preferably, a sensor is installed on the side of the drain pipe, and the sensor is connected to the heat pipe evaporator.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) This utility model provides a heating plate and a heat pipe evaporator. The heating plate includes an outer shell, an inner shell, a heat insulation layer and a heating coil. By utilizing the height difference between the heating coil and the heat pipe evaporator, the water tray can be heated in a convenient way. This can effectively prevent the water tray from freezing. Moreover, the gravity heat pipe heating system basically does not require external energy consumption, which is conducive to energy saving.

[0017] (2) This utility model can improve the safety of equipment by installing a sealing cover on the top of the inner shell;

[0018] (3) By providing connecting ears and connecting posts, and opening insertion holes on the connecting posts, this utility model can easily fix the heating plate to the bottom of the water receiving tray;

[0019] (4) By installing solenoid valves on the liquid return pipe and the gas discharge pipe, this utility model can conveniently control the opening and closing of the pipeline;

[0020] (5) By installing a sensor on the water receiving tray and connecting the sensor to the heat pipe evaporator, this utility model can realize the automatic power-off of the heat pipe evaporator. Attached Figure Description

[0021] Figure 1 A schematic diagram of a cold air blower with a gravity-type heat pipe heating system for the water receiving tray provided by this utility model;

[0022] Figure 2 for Figure 1 The diagram shown illustrates the installation of the water tray and heating plate in a cold air blower where the water tray is heated by a gravity-type heat pipe.

[0023] Figure 3 for Figure 1 The diagram shown is a structural schematic of the water collection tray in a cold air blower that uses gravity-type heat pipe heating.

[0024] Figure 4 for Figure 1 The diagram shown illustrates the structure of the heating plate in a cold air blower where the water tray is heated by a gravity-type heat pipe.

[0025] Figure 5 for Figure 1 The diagram shown is a cross-sectional view of the heating plate in a cold air blower where the water tray is heated by a gravity-type heat pipe.

[0026] The corresponding names of the attached figures are as follows: 1-Air cooler body, 2-Water tray, 3-Heating plate, 4-Heat pipe evaporator, 5-Pin rod, 21-First slope, 22-Drain pipe, 23-Second slope, 24-Sensor, 25-Connecting ear, 31-Outer shell, 32-Inner shell, 33-Insulation layer, 34-Heating coil, 35-Sealing cover, 36-Connecting column, 37-Insertion hole, 41-Gas exhaust pipe, 42-Liquid return pipe, 43-Solenoid valve. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0028] Example 1:

[0029] like Figure 1-5As shown, the present invention provides a gravity-heated air cooler with a drip tray, comprising: an air cooler body 1, and a drip tray 2 installed below the air cooler body 1. During defrosting of the air cooler body 1, defrost water falls onto the drip tray 2. To prevent ice formation on the drip tray 2, a heating mechanism is installed at the bottom of the drip tray 2. The heating mechanism includes a heating plate 3 installed at the bottom of the drip tray 2 and a heat pipe evaporator 4 connected to the heating plate 3. The heat pipe evaporator is a high-efficiency energy exchange device based on phase change heat transfer. Its core achieves rapid heat transfer through a working fluid evaporation-condensation cycle. Its specific structure will not be described in detail here. The heating plate 3 includes an outer shell 31, an inner shell 32, a heat insulation layer 33, and a heating coil 34. The outer shell 31 is fixed to the bottom of the drip tray 2, the inner shell 32 is located inside the outer shell 31, and the heat insulation layer 33 is located between the outer shell 31 and the inner shell 32. The heat insulation layer 33 surrounds the inner shell 32 and its bottom, reducing... Heat dissipation towards the surroundings and bottom reduces its impact on the cold storage temperature. The heating coil 34 is installed inside the inner shell 32, with both ends extending out of the outer shell 31 and connected to the heat pipe evaporator 4. In use, the air cooler body 1 is installed inside the cold storage, while the heat pipe evaporator 4 is installed outside the cold storage, with the height of the heat pipe evaporator 4 lower than that of the air cooler body 1. When the air cooler body 1 frosts up, the defrosting program is activated. The defrosting programs of the heat pipe evaporator and the air cooler body 1 are activated synchronously. Then the air cooler begins defrosting. The refrigerant gas in the heat pipe evaporator 4 enters the heating coil 34 through the pipe, exchanges heat with the water tray 2, and transfers heat to the water tray 2. After the refrigerant temperature drops and it becomes liquid, the liquid refrigerant flows back to the heat pipe evaporator 4 through the pipe under the action of gravity. The heat pipe evaporator 4 converts the liquid refrigerant into a gaseous state and then delivers it to the heating coil 34. This cycle continues, achieving continuous heat transfer. This causes the temperature of the drip tray 2 to rise during the defrosting process, preventing the defrost water on the drip tray 2 from freezing. This gravity-like split heat pipe structure can transport high-density heat under near-isothermal conditions, and has the advantages of good heat transfer performance, long heat transfer distance, small start-up temperature difference, flexible layout, simple and compact structure, and high reliability.

[0030] By setting up a heating plate 3 and a heat pipe evaporator 4, and by setting up a heating plate 3 including an outer shell 31, an inner shell 32, a heat insulation layer 33 and a heating coil 34, the height difference between the heating coil 34 and the heat pipe evaporator 4 can be used to conveniently heat the water tray 2, which can effectively prevent the water tray 2 from freezing.

[0031] Example 2:

[0032] like Figure 4-5As shown, in this embodiment, a sealing cover 35 with good thermal conductivity made of metal material is installed on the top of the inner shell 32. The top of the sealing cover 35 is in close contact with the bottom of the water receiving tray 2, and the bottom of the sealing cover 35 is in close contact with the heating coil 34. By sealing the space inside the inner shell 32 with the sealing cover 35, the medium in the pipe can be prevented from leaking into the cold storage when the heating coil 34 is damaged, thereby improving the safety of use.

[0033] The safety of the device can be improved by installing a sealing cover 35 on the top of the inner housing 32.

[0034] Example 3:

[0035] like Figure 1-5 As shown, a connecting lug 25 is installed on the side of the water receiving tray 2, and a connecting post 36 is installed on the side of the outer casing 31. A horizontal insertion hole 37 is provided on the connecting post 36. In use, the connecting post 36 is aligned with the connecting lug 25 and inserted so that the insertion hole 37 protrudes from above the connecting lug 25. Then, the pin 5 is inserted into the insertion hole 37 to connect the connecting post 36 with the connecting lug 25, thereby fixing the heating plate 3 to the bottom of the water receiving tray 2. When disassembling, the pin 5 is pulled out to remove the heating plate 3, making it more convenient to use.

[0036] By setting up connecting ears 25 and connecting posts 36, and opening insertion holes 37 on connecting posts 36, the heating plate 3 can be easily fixed to the bottom of the water receiving tray 2.

[0037] Example 4:

[0038] like Figure 1 and Figure 4-5 As shown, one end of the heating coil 34 is a gas inlet, and the other end is a liquid outlet. The heat pipe evaporator 4 is equipped with a liquid return pipe 42 and a gas outlet pipe 41. The liquid return pipe 42 and the gas outlet pipe 41 are connected to the heating coil 34. Specifically, one end of the gas outlet pipe 41 is connected to the gas inlet of the heating coil 34, and one end of the liquid return pipe 42 is connected to the liquid outlet. During use, the gas generated by the heat pipe evaporator 4 is transported to the heating coil 34 through the gas outlet pipe 41, and the liquid generated by the heat exchange of the heating coil 34 is returned to the heat pipe evaporator 4 through the liquid return pipe 42.

[0039] By setting up a liquid return pipe 42 and a gas discharge pipe 41, the heating coil 34 can be easily connected to the heat pipe generator 4.

[0040] Example 5:

[0041] like Figure 1As shown, solenoid valves 43 are installed on both the liquid return pipe 42 and the gas discharge pipe 41. The solenoid valves 43 are connected to the control board of the heat pipe evaporator 4. When the heat pipe evaporator 4 is working, the solenoid valves 43 control the liquid return pipe 42 and the gas discharge pipe 41 to be unobstructed, and vice versa.

[0042] By installing solenoid valves 43 on the liquid return pipe 42 and the gas discharge pipe 41, the on / off state of the pipeline can be easily controlled.

[0043] Example 6:

[0044] like Figure 3 As shown, in this embodiment, the top of the water receiving tray 2 is provided with a first slope 21 and two second slopes 23. A drain pipe 22 is installed between the second slopes 23 (at the lowest point). Defrosting water flows along the first tray 21 to the second slopes 23, and then along the second slopes 23 into the drain pipe 22, from which it is discharged outside the cold storage. A sensor 24 is installed on the side of the drain pipe 22. The sensor 24 is a contact-type water immersion sensor. The sensor 24 is connected to the control board or circuit controller (PLC) of the heat pipe evaporator 4 via a circuit. When the sensor 24 does not detect water flow within a certain time (e.g., a 120-second interval), the heat pipe evaporator 4 stops operating. This achieves automatic power-off, which is beneficial for energy saving.

[0045] By installing sensor 24 on water receiving pan 2 and connecting sensor 24 to heat pipe evaporator 4, automatic power-off of heat pipe evaporator 4 can be achieved.

[0046] Working Principle: During operation, the air cooler body 1 is installed inside the cold storage unit, while the heat pipe evaporator 4 is installed outside, with the height of the heat pipe evaporator 4 lower than that of the air cooler body 1. When frost forms on the air cooler body 1, the defrosting program is activated. The defrosting programs of the heat pipe evaporator and the air cooler body 1 start synchronously. The air cooler then begins defrosting. The refrigerant gas in the heat pipe evaporator 4 enters the heating coil 34 through pipes, exchanging heat with the drip tray 2. After transferring heat to the drip tray 2, the refrigerant temperature decreases, turning it into a liquid state. Under the influence of gravity, the liquid refrigerant flows back to the heat pipe evaporator 4 through pipes. The heat pipe evaporator 4 converts the liquid refrigerant into a gaseous state and then delivers it back to the heating coil 34. This cycle continues, achieving continuous heat transfer. This causes the temperature of the drip tray 2 to rise during the defrosting process, preventing the defrost water on the drip tray 2 from freezing.

Claims

1. A cold air blower with a water tray heated by gravity-type heat pipes, characterized in that, include: The air cooler body (1), the water receiving tray (2), and the heating mechanism; The heating mechanism includes a heating plate (3) installed at the bottom of the water receiving pan (2) and a heat pipe evaporator (4) connected to the heating plate (3); The heating plate (3) includes an outer shell (31), an inner shell (32), a heat insulation layer (33), and a heating coil (34), which is connected to the heat pipe evaporator (4).

2. A cold air blower with a gravity-type heat pipe heating system for a water receiving tray as described in claim 1, characterized in that, A sealing cap (35) is installed on the top of the inner shell (32).

3. A cold air blower with a gravity-type heat pipe heating system for a water receiving tray as described in claim 1, characterized in that, The water receiving tray (2) has a connecting lug (25) installed on its side, and the outer shell (31) has a connecting post (36) installed on its side. The connecting post (36) has a plug hole (37).

4. A cold air blower with a gravity-type heat pipe heating system for a water receiving tray according to claim 1, characterized in that, The heat pipe evaporator (4) is equipped with a liquid return pipe (42) and a gas discharge pipe (41), which are connected to the heating coil (34).

5. A cold air blower with a gravity-type heat pipe heating system for a water receiving tray according to claim 4, characterized in that, Solenoid valves (43) are installed on both the liquid return pipe (42) and the gas discharge pipe (41), and the solenoid valves (43) are connected to the heat pipe evaporator (4).

6. A cold air blower with a gravity-type heat pipe heating system for a water receiving tray according to claim 1, characterized in that, The top of the water receiving tray (2) is provided with a first slope (21) and two second slopes (23), and a drain pipe (22) is installed between the two second slopes (23).

7. A cold air blower with a gravity-type heat pipe heating system for a water receiving tray according to claim 6, characterized in that, A sensor (24) is installed on the side of the drain pipe (22), and the sensor (24) is connected to the heat pipe evaporator (4).

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