Energy-saving liquid circulation air conditioner for oxygen chamber with energy storage function

Abstract

The utility model relates to an energy-saving liquid circulation air conditioner for oxygen cabin with energy storage function, including a cooling device for cooling the interior of the oxygen cabin, an external circulation refrigeration device for conveying refrigerant to the cooling device, the external circulation refrigeration device including a refrigerant storage tank, a circulation pump, and a refrigerant return pipe; the cooling device including a fan and a cooling inner pipe, the fan and the cooling inner pipe are arranged correspondingly so that the gas inside the oxygen cabin is cooled by heat exchange with the cooling inner pipe, the refrigerant storage tank stores liquid refrigerant, and the liquid refrigerant is cooled by the refrigerant pipe of the air conditioner outer unit; the circulation pump conveys the liquid refrigerant in the refrigerant storage tank to the cooling inner pipe; the refrigerant return pipe conveys the refrigerant after heat exchange back to the refrigerant storage tank. The air conditioner stores liquid refrigerant in the refrigerant storage tank, which can not only quickly cool down, but also maintain a higher cooling capacity in the cabin for a long time, saving energy. Moreover, the overall structure is compact, the cabin space is saved, the temperature is automatically reduced, and the operation is simple, which is suitable for various oxygen cabins that need to be kept cooled for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of internal cooling systems of oxygen cabins, and in particular to a special energy-saving liquid circulation air conditioner with an energy storage function for oxygen cabins. Background Art

[0002] At present, the liquid circulation air conditioner for oxygen cabins cools the liquid by letting the refrigerant and liquid flow through the heat sink group respectively. The low-temperature liquid then flows through the liquid pipe in the cabin. The liquid pipe is equipped with a heat sink, and the heat sink is attached with a fan. The fan sucks the hot air in the cabin and sends it to the heat sink for cooling, and then sends it back to the cabin. This cycle cools the cabin. If rapid cooling is required, the fan air volume and coolant flow rate need to be increased. Due to the low heat capacity of the coolant and the radiator, the cold will also quickly dissipate into the cabin during rapid circulation, and the overall water temperature will rise accordingly. After a certain number of cycles, the air conditioning cooling effect will gradually weaken or even disappear. If this problem is solved in the existing way, the power of the main engine outside the cabin needs to be increased, resulting in energy waste.

[0003] For example, the Chinese invention patent application with publication number CN116906974A is a miniature air conditioner that uses an off-cabin condensation module in conjunction with an on-cabin evaporation module to cool the interior of the oxygen cabin. The off-cabin condensation module has components such as a condenser bottom shell, a condensation radiator, a radiator cover, a fan air guide cover, and a vortex fan; the off-cabin condensation module is also equipped with an air-conditioning compressor, a dryer, and a shock-absorbing pad. In order to ensure that the cabin is kept at a certain low temperature, more condensation components need to be equipped, and the air-conditioning compressor needs to be used for refrigeration. Of course, there is also a need to increase the power of the off-cabin air-conditioning compressor to achieve the cooling effect. Utility Model Content

[0004] In view of this, an energy-saving liquid circulation air conditioner specially designed for oxygen cabins with energy storage function is provided, which has a simple and effective structure, high-efficiency cooling and can maintain a higher cooling capacity in the cabin for a long time.

[0005] A special energy-saving liquid circulation air conditioner with energy storage function for oxygen cabins, comprising a cooling device for cooling the interior of the oxygen cabin, an external circulation refrigeration device for conveying refrigerant to the cooling device, the external circulation refrigeration device comprising a refrigerant storage tank, a circulation pump, and a refrigerant return pipe; the cooling device comprising a fan and a cooling inner pipe, the fan and the cooling inner pipe being arranged correspondingly to allow the internal gas of the oxygen cabin to exchange heat with the cooling inner pipe for cooling, the refrigerant storage tank containing liquid refrigerant, the liquid refrigerant being cooled by the refrigerant pipe of the air conditioner external unit; the circulation pump being connected between the refrigerant storage tank and the inlet of the cooling inner pipe for conveying the liquid refrigerant in the refrigerant storage tank to the cooling inner pipe; the refrigerant return pipe being connected between the outlet of the cooling inner pipe and the refrigerant storage tank for conveying the refrigerant after heat exchange back to the refrigerant storage tank.

[0006] Specifically, the refrigerant pipe of the air conditioner outdoor unit is a spiral pipe or a serpentine pipe, and the flow direction of the refrigerant pipe of the air conditioner outdoor unit is from bottom to top.

[0007] In some preferred embodiments, the liquid refrigerant stored in the refrigerant storage tank at least completely immerses all of the refrigerant pipes.

[0008] Preferably, the circulation pump is connected to an upper portion of the refrigerant storage tank, and the refrigerant return pipe is connected to the bottom of the refrigerant storage tank.

[0009] Preferably, the cooling inner tube is a spiral tube or a serpentine tube.

[0010] Furthermore, the outer tube wall of the cooling inner tube is provided with a heat sink, and the fan blows air directly toward the heat sink.

[0011] Specifically, the cooling device includes an evaporator, and the evaporator includes the fan, the cooling inner tube, and a heat sink arranged on an outer tube wall of the cooling inner tube.

[0012] Preferably, the heat sink is in the form of a whole piece arranged side by side, and the multiple heat sinks arranged side by side are rectangular as a whole. The cooling inner tube is a serpentine tube, and the serpentine tube is spirally arranged through the multiple heat sinks. The spiral structure of the serpentine tube strings together the multiple heat sinks in the horizontal and vertical directions.

[0013] Specifically, the serpentine tube spirals from top to bottom along the longitudinal direction, and the inlet of the serpentine tube is above the outlet of the serpentine tube.

[0014] Preferably, the blowing direction of the fan is consistent with the spiral direction of the serpentine tube.

[0015] In the above-mentioned energy-saving liquid circulation air conditioner dedicated to the oxygen cabin with energy storage function, a refrigerant storage tank is used to store a large amount of liquid refrigerant in it, and the refrigerant is cooled to a sufficiently low temperature by the air conditioner outdoor unit. Thus, by cooling the liquid refrigerant sufficiently, sufficient high-cold liquid refrigerant can be provided for a long time to the cooling inner tube in the cabin. Since the liquid refrigerant refluxed from the cabin is very small relative to the amount of liquid refrigerant in the entire refrigerant storage tank, and the refluxed liquid refrigerant will be circulated internally in the refrigerant storage tank, and will be sent to the cooling inner tube in the cabin after recooling, there is both internal and external circulation of the liquid refrigerant and the cooling temperature recovery of the liquid refrigerant, ensuring that the liquid refrigerant entering the oxygen cabin is sufficiently cooled, i.e., high-cold, so that the cabin can be cooled quickly and efficiently, and a higher cold capacity can be maintained in the cabin for a long time, so that the cabin temperature is maintained within a predetermined low temperature range for a long time, which greatly saves energy, and at the same time plays a long-term, efficient and high-cold cabin cooling effect. Moreover, the overall structure is compact, the cabin space is saved, the temperature is automatically reduced, and the operation is simple, which is suitable for various oxygen cabins that need to be kept in a cooling state for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an energy-saving liquid circulation air conditioner dedicated to an oxygen cabin with an energy storage function provided by an embodiment of the utility model.

[0017] In the attached figure:

[0018] 10. Cooling device; 11. Fan; 12. Cooling inner tube; 13. Inlet; 14. Outlet; 15. Heat sink; 20. External circulation refrigeration device; 21. Refrigerant storage tank; 22. Liquid refrigerant; 31. Circulation pump; 32. Refrigerant return pipe; 50. Air conditioner outdoor unit; 51. Refrigerant pipe; 60. Oxygen chamber body. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 , showing an energy-saving liquid circulation air conditioner for oxygen cabin with energy storage function provided by an embodiment of the utility model, including a cooling device 10 for cooling the interior of the oxygen cabin, an external circulation refrigeration device 20 for delivering refrigerant to the cooling device 10, the external circulation refrigeration device 20 including a refrigerant storage tank 21, a circulation pump 31, and a refrigerant return pipe 32; the cooling device 10 includes a fan 11 and a cooling inner pipe 12, the fan 11 and the cooling inner pipe 12 are arranged correspondingly so that the gas inside the oxygen cabin and the cooling inner pipe The tube 12 is cooled by heat exchange, and the refrigerant storage tank 21 stores liquid refrigerant 22, and the liquid refrigerant 22 is cooled through the refrigerant pipe 51 of the air-conditioning outdoor unit 50; the circulating pump 31 is connected between the refrigerant storage tank 21 and the inlet 13 of the cooling inner tube 12, and is used to transport the liquid refrigerant 22 in the refrigerant storage tank 21 to the cooling inner tube 12; the refrigerant return pipe 32 is connected between the outlet 14 of the cooling inner tube 12 and the refrigerant storage tank 21, and is used to return the refrigerant that has undergone heat exchange to the refrigerant storage tank 21.

[0021] As shown in the figure, specifically, the refrigerant pipe 51 of the air conditioner outdoor unit 50 is a spiral pipe or a serpentine pipe, and the flow direction of the refrigerant pipe 51 of the air conditioner outdoor unit 50 is from bottom to top. For example, the refrigerant pipe 51 is arranged to spiral upward from bottom to top, or is arranged to bend upward from bottom to top, that is, a serpentine pipe. The flow direction of the refrigerant medium in the refrigerant pipe 51 is also from bottom to top.

[0022] In some preferred embodiments, the liquid refrigerant 22 stored in the refrigerant storage tank 21 at least completely immerses all the refrigerant tubes 51, so that the refrigerant tubes 51 can fully contact the liquid refrigerant 22 in the refrigerant storage tank 21, perform sufficient heat exchange, and make the liquid refrigerant 22 fully cooled, and then sent to the cooling inner tube 12. The liquid refrigerant 22 is preferably water, but other refrigerants can also be used. Since pure water can be used, a safer water refrigerant solution can be used, which is safer than the traditional fluorine oxygen refrigerant method. The circulating water temperature adjustment range is 10℃-35℃.

[0023] Specifically, the circulation pump 31 is connected to the inlet at the upper part of the refrigerant storage tank 21, so that the output liquid refrigerant 22 is sufficiently cooled. Furthermore, the refrigerant return pipe 32 is connected to the bottom of the refrigerant storage tank 21, so that the liquid refrigerant 22 can also be fully cooled by the refrigerant pipe 51 from bottom to top.

[0024] In the oxygen chamber body 60, preferably, the cooling inner tube 12 is a spiral tube or a serpentine tube. Further, the outer tube wall of the cooling inner tube 12 is provided with a heat sink 15, and the fan 11 blows air directly toward the heat sink 15. Specifically, the cooling device 10 includes an evaporator, and the evaporator includes the fan 11, the cooling inner tube 12, and the heat sink 15 provided on the outer tube wall of the cooling inner tube 12.

[0025] Preferably, the heat sink 15 is a whole piece arranged side by side, and the plurality of heat sinks 15 arranged side by side are rectangular as a whole. The cooling inner tube 12 is a serpentine tube, and the serpentine tube is spirally arranged through the plurality of heat sinks 15. The spiral structure of the serpentine tube strings together the plurality of heat sinks 15 in the horizontal and vertical directions. Through this structure, the refrigerant in the cooling inner tube 12 is fully in contact with the atmosphere in the oxygen cabin body 60 through the heat sink, and combined with the fan 11, the temperature of the atmosphere in the oxygen cabin body 60 can be reduced to a relatively low level. Among them, the fan 11 can adjust the wind speed, and the external unit 50 can realize a silent external unit with an operating noise of less than 45dB. The cooling device 10 is installed in the form of a through-plate structure in the cabin, and various pipeline interfaces adopt aviation plug assemblies. When the cabin body is opened, the empty position of the aviation plug is facing upward to prevent water from causing a short circuit.

[0026] Specifically, the serpentine tube spirals from top to bottom along the longitudinal direction, and the inlet 13 of the serpentine tube is above the outlet 14 of the serpentine tube. Preferably, the blowing direction of the fan 11 is consistent with the spiraling direction of the serpentine tube. For example, as shown in the figure, the fan 11 is arranged above the heat sink, and the air blown by the fan 11 contacts the heat sink from top to bottom for heat exchange.

[0027] The following table shows the test data of the air conditioner of this embodiment.

[0028] 1. Test purpose: To verify whether the air conditioner meets the target requirements for cabin temperature and humidity;

[0029] 2. Test purpose: To verify whether the air conditioner meets the target requirements for temperature and humidity in the cabin;

[0030] 3. Test conditions: Chiller specifications: 500W refrigeration compressor + 65V circulating water pump + 260MM water tank + 20MM thick cooling fins + cooling fan.

[0031] 4. Internal unit specifications: 9MM tube evaporator (240×120×50MM) + 2 axial flow fans (120×120MM)

[0032] 5. Water tank capacity: 23 to 26 liters of water, water tank temperature set to 5°C, test in a two-person cabin;

[0033] 6. Cabin pressurization host: 5L machine

[0034] 7. Tester: Height 160CM; Weight: 72KG

[0035] 8. Test date: 9:00 to 10:30 a.m., April 1, 2024; ambient temperature: 27.8°C; ambient humidity: 77.9%

[0036] 9. Temperature probe details:

[0037] No. 1: water inlet temperature; No. 2: return water temperature; No. 3: oxygen chamber air inlet temperature; No. 4: internal machine air outlet temperature; No. 5: cabin top temperature; No. 6: cabin skin temperature;

[0038]

[0039] Feeling: Quite cold, a bit unbearable, the cabin is too cold

[0040] Note: Test water temperature: 5℃; later use: 8 to 12℃ test, later you can control the temperature and humidity in the cabin by controlling the water temperature and fan speed.

[0041] The above test shows that the initial air intake temperature of the oxygen cabin is about 30℃, which is equivalent to the indoor temperature in hot weather. After 90 minutes of operation, the temperature on the top of the cabin drops to 19.1℃, the temperature on the cabin skin drops to 23.6℃, ​​and the humidity in the cabin drops to 50.10%. People in the cabin feel quite cold and can't stand it. The cabin is too cold. Moreover, after 10 minutes, the temperature inside the oxygen cabin can drop by 4-5 degrees.

[0042] It can be seen that in the above-mentioned energy-saving liquid circulation air conditioner dedicated to the oxygen cabin with energy storage function, a large amount of liquid refrigerant is stored in the refrigerant tank, and the refrigerant is cooled to a sufficiently low temperature by the air conditioner outdoor unit. Therefore, by cooling the liquid refrigerant sufficiently, sufficient high-cold liquid refrigerant can be provided for a long time to cool the inner tube in the cabin. Moreover, when the time is more than 1 hour, the temperature can drop below 20 degrees, which can provide a fully cooled cabin environment, and the humidity is also reduced. Moreover, it can quickly and efficiently cool the cabin, and can maintain a higher cooling capacity in the cabin for a long time, so that the cabin temperature is maintained within a predetermined low temperature range for a long time, which greatly saves energy, and at the same time plays a long-term, efficient and high-cooling cabin cooling effect. Moreover, the overall structure is compact, saves cabin space, and automatically cools down. When necessary, the cabin temperature and humidity can be controlled by controlling the water temperature in the refrigerant storage tank and the fan speed. The operation is simple and suitable for various oxygen cabins that need to be kept in a cooling state for a long time.

[0043] It should be noted that the present invention is not limited to the above-mentioned embodiments. According to the creative spirit of the present invention, those skilled in the art may also make other changes. These changes made according to the creative spirit of the present invention should be included in the scope of protection required by the present invention.

Claims

1. An energy-saving liquid circulation air conditioner for an oxygen cabin with an energy storage function, comprising a cooling device for cooling the interior of the oxygen cabin and an external circulation refrigeration device for delivering a refrigerant to the cooling device, characterized in that: The external circulation refrigeration device includes a refrigerant storage tank, a circulation pump, and a refrigerant return pipe; the cooling device includes a fan and a cooling inner tube, and the fan and the cooling inner tube are arranged correspondingly to allow the gas inside the oxygen cabin to exchange heat with the cooling inner tube for cooling. The refrigerant storage tank stores liquid refrigerant, and the liquid refrigerant is cooled through the refrigerant pipe of the air conditioner outdoor unit; The circulating pump is connected between the refrigerant storage tank and the inlet of the cooling inner tube to transport the liquid refrigerant in the refrigerant storage tank to the cooling inner tube; The refrigerant return pipe is connected between the outlet of the cooling inner pipe and the refrigerant storage tank, and is used to return the refrigerant after heat exchange to the refrigerant storage tank.

2. The energy-saving liquid circulation air conditioner for oxygen cabin with energy storage function as claimed in claim 1, characterized in that: The refrigerant pipe of the air conditioner outdoor unit is a spiral pipe or a serpentine pipe, and the flow direction of the refrigerant pipe of the air conditioner outdoor unit is from bottom to top.

3. The energy-saving liquid circulation air conditioner for oxygen cabin with energy storage function as claimed in claim 1, characterized in that: The liquid refrigerant stored in the refrigerant storage tank at least completely immerses all of the refrigerant pipes.

4. The energy-saving liquid circulation air conditioner for oxygen cabin with energy storage function as claimed in claim 1, characterized in that: The circulation pump connection inlet is located at the upper part of the refrigerant storage tank, and the refrigerant return pipe is connected to the bottom of the refrigerant storage tank.

5. The energy-saving liquid circulation air conditioner for oxygen cabin with energy storage function as claimed in claim 1, characterized in that: The cooling inner tube is a spiral tube or a serpentine tube.

6. The energy-saving liquid circulation air conditioner for oxygen cabin with energy storage function as claimed in claim 1, characterized in that: The outer tube wall of the cooling inner tube is provided with a heat sink, and the fan blows air directly toward the heat sink.

7. The energy-saving liquid circulation air conditioner for oxygen cabin with energy storage function as claimed in claim 1, characterized in that: The cooling device comprises an evaporator, and the evaporator comprises the fan, the cooling inner tube, and a heat sink arranged on the outer tube wall of the cooling inner tube.

8. The energy-saving liquid circulation air conditioner for oxygen cabin with energy storage function as claimed in claim 7, characterized in that: The heat sink is in the form of a whole piece arranged side by side, and the plurality of heat sinks arranged side by side are rectangular as a whole. The cooling inner tube is a serpentine tube, and the serpentine tube is spirally arranged through the plurality of heat sinks. The spiral structure of the serpentine tube strings together the plurality of heat sinks in the horizontal and vertical directions.

9. The energy-saving liquid circulation air conditioner for oxygen cabin with energy storage function as claimed in claim 8, characterized in that: The serpentine tube spirals from top to bottom along the longitudinal direction, and the inlet of the serpentine tube is above the outlet of the serpentine tube.

10. The energy-saving liquid circulation air conditioner for oxygen cabin with energy storage function as claimed in claim 8, characterized in that: The blowing direction of the fan is consistent with the spiral direction of the serpentine tube.

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