CN220103501U - Layered circulation device for changing liquid level, cold water temperature and hot water temperature - Google Patents
Layered circulation device for changing liquid level, cold water temperature and hot water temperature Download PDFInfo
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- CN220103501U CN220103501U CN202321626321.3U CN202321626321U CN220103501U CN 220103501 U CN220103501 U CN 220103501U CN 202321626321 U CN202321626321 U CN 202321626321U CN 220103501 U CN220103501 U CN 220103501U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 522
- 239000007788 liquid Substances 0.000 title claims abstract description 39
- 238000009826 distribution Methods 0.000 claims abstract description 61
- 238000010438 heat treatment Methods 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000001502 supplementing effect Effects 0.000 claims description 15
- 238000005057 refrigeration Methods 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model provides a variable liquid level cold and hot water temperature layered circulation device, which ensures water temperature quality, can improve the temperature of water entering a refrigeration device to improve the refrigeration efficiency of the refrigeration device in the refrigeration process, and can reduce the temperature of water entering a heating device to improve the heating efficiency of the heating device in the heating process. The liquid level sensor is arranged in the water tank; the upper water distribution pipe is arranged in the water tank, the upper water distribution pipe is multi-layered, and the upper water distribution pipe is sequentially arranged in the water tank from top to bottom; the branch water pipe is arranged outside the water tank and is connected with the upper water distribution pipe; the branch water pipes are also multi-layered and are sequentially arranged from top to bottom, and the branch water pipes are matched with the upper water distribution pipes one by one; each branch water pipe is provided with an electric valve; the first water main is connected with the branch water pipe; the bottom water distribution pipes are arranged in the water tank and are positioned below all the upper water distribution pipes; and the second water main is connected with the bottom water distribution pipe.
Description
Technical Field
The utility model relates to a variable liquid level cold and hot water temperature layered circulating device which is used for occasions where water or other liquid in a water tank needs to be heated or refrigerated.
Background
In the process production, water is required to be cooled, the water in the water tank is pumped to a refrigerating device for cooling through a circulating water pump, and the cooled water is returned to the water tank. The water in the water tank is taken out according to the production requirement of the process, and the water intake of the cold water and the fresh hot water are not necessarily stable, so the liquid level in the water tank is changed. In the conventional circulating water pumping refrigeration cooling process, see fig. 1 in detail, in order to prevent the circulating water pump from evacuating, a circulating water outlet pipe of the water tank is often arranged at the bottom of the water tank, and a circulating water inlet pipe of the water tank is arranged at a position not lower than the height of the circulating water inlet pipe. Generally, the water having a higher temperature is comparatively small, and the water having a higher temperature floats thereon when the temperature is stratified. The circulating water pump pumps out relatively low-temperature water from the bottom of the water tank, and when the water enters the refrigerating device, the refrigerating efficiency of the refrigerating device is reduced. The cooled cold water flowing out of the refrigerating device flows out of the water tank, and after entering the water tank, the cooled cold water is mixed with water in the water tank and then sinks downwards, so that the distribution of the cold water and the hot water in the water tank is disordered. The water in the water tank is repeatedly circulated to achieve the aim of cooling most of the water in the water tank. The process water needs to be taken from the water tank, at this time, the water temperature of the water taken out from the water tank is not the lowest, and the water temperature is unstable, so that the quality of the process cold water is affected.
In process production, or domestic hot water in a heat storage water tank for bathing, the water is heated, the water in the water tank is pumped to a heating device for heating by a circulating water pump, and the heated water is returned to the water tank. The water in the water tank is taken out for use according to actual needs, and the water intake of the newly-replenished cold water and the hot water is not necessarily stable, so that the liquid level in the water tank is changed. In the conventional circulating water pumping heating and temperature rising process, referring to fig. 2 in detail, in order to prevent the circulating water pump from evacuating, a water outlet pipe of the water tank is often arranged at the bottom of the water tank. In one approach, the inlet pipe of the water tank is arranged at a higher position on the upper part of the water tank. Along with the reduction of the water surface in the water tank, the water surface is always lower than the water inlet pipe, along with the increase of the height difference between the water inlet pipe and the water surface, the larger the water flow of the inlet water impacts the water surface, the natural layering of the temperature of the water is disturbed, the temperature field of the water in the water tank is affected, and the mixing of high-temperature water and low-temperature water is caused. Alternatively, see in detail fig. 3, the inlet pipe is arranged in the lower position in the upper part of the tank. When heated hot water enters the water tank, the temperature of the hot water is always higher than that of the original water in the water tank, so that the hot water can be mixed with the original water in the water tank and rise, and the mixing result of cold water and hot water in the water tank is also caused. Both of these methods generally take water at the bottom of the tank, and since cold water settles in the lower part, the water intake is generally not hot water at the highest temperature of the tank. When the circulating water pump pumps out the mixed water with relatively high temperature from the water tank and sends the mixed water into the heating device, when the heating device is a heat pump unit, the heating efficiency of the heat pump unit is obviously reduced. The water in the water tank is repeatedly circulated to achieve the purpose of heating most of the water in the water tank by additionally increasing the circulating water quantity or prolonging the heating time. Therefore, the conventional method is not energy-saving, and the quality of water temperature of water intake is not guaranteed.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a variable liquid level cold and hot water temperature layered circulating device with reasonable structural design, which ensures the quality of water temperature, ensures that hot water in a water tank is positioned at an upper layer and cold water is positioned at a lower layer in the refrigerating or heating process, reduces heat transfer and short circuit between cold and hot water in the water tank, can improve the temperature of water entering a refrigerating device to improve the refrigerating efficiency of the refrigerating device in the refrigerating process, and can reduce the temperature of water entering a heating device to improve the heating efficiency of the heating device in the heating process.
The utility model solves the problems by adopting the following technical scheme: a variable liquid level hot and cold water temperature layered circulating device comprises a water tank, a first water main and a second water main; the method is characterized in that: the device also comprises a liquid level sensor, an upper water distribution pipe, a branch water pipe and a bottom water distribution pipe; the liquid level sensor is arranged in the water tank; the upper water distribution pipe is arranged in the water tank, the upper water distribution pipe is multi-layered, and the upper water distribution pipe is sequentially arranged in the water tank from top to bottom; the branch water pipe is arranged outside the water tank and is connected with the upper water distribution pipe; the branch water pipes are also multi-layered and are sequentially arranged from top to bottom, and the branch water pipes are matched with the upper water distribution pipes one by one; each branch water pipe is provided with an electric valve; the first water main is connected with the branch water pipe; the bottom water distribution pipes are arranged in the water tank and are positioned below all the upper water distribution pipes; and the second water main is connected with the bottom water distribution pipe.
The upper water distribution pipe is provided with water holes.
The water holes are formed in the bottom water distribution pipe.
The upper water distribution pipe and the bottom water distribution pipe are horizontally arranged.
The utility model also comprises a circulating water pump and a refrigerating device; an inlet of the refrigerating device is connected with the first water main, and an outlet of the refrigerating device is connected with the second water main; the circulating water pump is arranged on the first water main.
The utility model also comprises a cold water intake pipe which is connected with the second water intake pipe or the bottom of the water tank.
The utility model also comprises a hot water supplementing pipe which is connected with the high position of the water tank.
The utility model also comprises a circulating water pump and a heating device; the inlet of the heating device is connected with the second water main, and the outlet of the heating device is connected with the first water main; the circulating water pump is arranged on the second water main.
The utility model also comprises a hot water intake pipe which is connected with the main water pipe I.
The utility model also comprises a cold water supplementing pipe which is connected with the lower position of the water tank.
Compared with the prior art, the utility model has the following advantages and effects:
1. after the utility model is applied, the temperature stratification can be established by effectively utilizing the density difference of cold and hot water, the hot water is distributed at the upper part of the water tank, and the cold water is distributed at the lower part of the water tank.
2. After the utility model is applied, the short circuit condition in the water tank in the refrigerating or heating process is reduced, and the circulating water quantity is effectively reduced.
3. In the refrigerating process, after the utility model is applied, the temperature of water entering the refrigerating device can be increased to improve the refrigerating efficiency of the refrigerating device.
4. In the heating process, the temperature of water entering the heating device can be reduced after the utility model is applied, so that the heating efficiency of the heating device such as an air conditioner heat pump and the like is improved.
5. After the utility model is applied, the hot water intake pipe can take water from the upper part of the water tank or the outlet of the heating device, and the process water is the hot water with the highest temperature.
6. After the utility model is applied, the cold water intake pipe is used for taking water from the bottom of the water tank or the outlet of the refrigerating device, and the process water is cold water with the lowest temperature.
7. Particularly, after the utility model is applied in the refrigeration process, when the liquid level of the water in the water tank becomes low, the circulating water pump can be prevented from being evacuated.
Drawings
Fig. 1 is a schematic diagram of a conventional tank water refrigeration cycle system.
Fig. 2 is a schematic diagram of a conventional water heating circulation system of a water tank.
Fig. 3 is a schematic diagram of a conventional water heating circulation system of a water tank.
Fig. 4 is a schematic diagram of a system for refrigerating demineralized water in a water tank by a refrigerating apparatus according to embodiment 2 of the present utility model.
Fig. 5 is a schematic diagram of a system for heating domestic hot water by a heating device according to embodiment 3 of the present utility model.
Detailed Description
The present utility model will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present utility model and not limited to the following examples.
Example 1.
The embodiment of the utility model comprises a water tank 1, a liquid level sensor 2, an upper water distribution pipe 3, a branch water pipe 4, a first water main 5, a second water main 9 and a bottom water distribution pipe 10.
The liquid level sensor 2 is installed in the water tank 1. The liquid level sensor 2 is provided with a plurality of liquid level setting values.
The upper water distribution pipe 3 is arranged in the water tank 1, the upper water distribution pipe 3 is multi-layered, the upper water distribution pipe 3 is sequentially arranged from top to bottom on the water tank 1, and the upper water distribution pipe 3 is matched with the liquid level set value of the liquid level sensor 2 one by one. The upper water distribution pipe 3 is provided with water holes. The upper water distribution pipe 3 is arranged to uniformly pump water from the same water surface of the water tank, so that disturbance of pumping water to hot water at the upper part of the water tank is reduced as much as possible.
The branch water pipe 4 is arranged outside the water tank 1, and the branch water pipe 4 is connected with the upper water distribution pipe 3. The branch water pipes 4 are also multi-layered and are sequentially arranged from top to bottom, and the branch water pipes 4 are matched with the upper water distribution pipes 3 one by one.
Each branch water pipe 4 is provided with an electric valve, the electric valves of the branch water pipes 4 of multiple layers can be numbered V1, V2, V3, V4 and … … from top to bottom, and correspondingly, the liquid level numbers of the liquid level set values of the corresponding liquid level sensors 2 are H1, H2, H3, H4 and … … from top to bottom. And the electric valve corresponding to the liquid level is selectively opened according to the liquid level of the water tank 1, so that hot water is discharged from the position of the water tank with relatively high liquid level to the maximum extent.
The first water pipe is connected with the branch water pipe 4.
The second water pipe 9 is connected with the bottom water distribution pipe 10. The bottom water distribution pipe 10 is arranged in the water tank, is positioned at the bottom of the water tank and is positioned below the upper water distribution pipe. The water distribution pipe 10 at the bottom is provided with water holes.
The upper water distribution pipe 3 and the bottom water distribution pipe 10 are both horizontally arranged.
Example 2.
The embodiment is used for cooling demineralized water (abbreviated as water, hereinafter the same) in a water tank by using a refrigerating device required by power plant process production, and referring to fig. 4, the embodiment further comprises a circulating water pump 6, a hot water supplementing pipe 7, a refrigerating device 8 and a cold water intake pipe 11 on the basis of embodiment 1.
In this embodiment, the refrigerating device 8 is a chiller, and the refrigerant is a water-cooled vapor compression chiller of freon. The inlet of the refrigerating device 8 is connected with the first water main 5, and the outlet of the refrigerating device 8 is connected with the second water main 9.
The circulating water pump 6 is arranged on the first water pipe 5 and is used for pumping out the water in the water tank 1 and then delivering the water into the refrigerating device 8.
The cold water intake pipe 11 is connected with the second water intake pipe 9 or the bottom of the water tank 1.
The hot water supplementing pipe 7 is connected with the high position of the water tank 1.
The hot water of the water tank 1 flows into the upper water distribution pipe 3 through the water holes of the upper water distribution pipe 3, then uniformly flows into the branch water pipes 4, and after flowing out of the water tank 1 from the branch water pipes 4, the hot water of the branch water pipes 4 is converged into the total water pipe 5. When the liquid level is higher than the liquid level H1, the electric valve 1 is opened, and other electric valves are closed. When the liquid level is higher than the liquid level H2 and lower than the liquid level H1, the electric valve 2 is opened, and other electric valves are closed. Similarly, the corresponding electric valve is selectively opened according to the water surface, and other electric valves are closed, so that the hot water with the highest temperature in the water tank 1 flowing out of the water tank 1 is ensured to the greatest extent. After the hot water in the first water pipe 5 is pressurized by the circulating water pump 6, the hot water enters the refrigerating device 8 for refrigerating and cooling. Then, there are two approaches: in one way, the cold water after refrigeration and temperature reduction flows through the main water pipe II 9 and then is divided into two paths, one path is provided with the cold water intake pipe 11 for process water, the water is taken from the cold water intake pipe, the temperature of the process water can be guaranteed to be the lowest cold water, the other path enters the bottom water distribution pipe 10 of the water tank 1, and the cold water uniformly flows into the water tank 1 through water holes of the bottom water distribution pipe 10 to form a water flow system circulation. In the other way, after the chilled water flows through the second total water pipe 9, the chilled water enters the bottom water distribution pipe 10 of the water tank 1, and the chilled water uniformly flows into the water tank 1 through water holes of the bottom water distribution pipe 10 to form a water flow system circulation, and the bottom of the water tank 1 is provided with a chilled water intake pipe 11. Generally, for cold and hot water with the temperature higher than 4 ℃, natural temperature layering of the cold and hot water in the water tank 1 is realized, the hot water is at the upper part, the cold water is at the lower part, an interface is arranged between the cold water and the hot water, and the hot water can transfer heat to the cold water, so that a temperature gradient exists at the interface between the cold water and the hot water, and the thickness of the interface between the cold water and the hot water is limited because the heat conductivity coefficient of the water is small (the heat conductivity coefficient of liquid water is about 0.59W/(m.K) at normal temperature and normal pressure). In the process of refrigeration cycle, the junction height of the cold water and the hot water is changed, the water level of the water tank is also changed, but the cold water after refrigeration is always at the relatively lower part, and the hot water before refrigeration is always at the relatively upper part, so that the maximum anti-breaking effect is realized. When hot water with higher temperature is pumped out of the water tank 1 by the circulating water pump 6 and is sent into the refrigerating device 8, the refrigerating efficiency of the refrigerating device 8 is obviously improved, and the purpose of energy saving is achieved. A hot water supplementing pipe 7 is arranged at the high position of the water tank 1, and supplementing water outside the water tank 1 flows in from the pipe to supplement the upper water surface of the water tank 1 with higher temperature so as to reduce the influence of the supplementing hot water on the temperature layering of cold and hot water in the water tank 1. Meanwhile, the water discharged by the cold water intake pipe 11 is water with lower temperature, so that the quality of the cooling water temperature of the process water is ensured.
Example 3.
In this embodiment, the heating device is used for heating domestic hot water (abbreviated as water and the same applies hereinafter) in a heat storage water tank (abbreviated as water tank and the same applies hereinafter) for bath, and referring to fig. 5, this embodiment further comprises a circulating water pump 6, a cold water supplementing pipe 13, a heating device 14 and a hot water intake pipe 12 on the basis of embodiment 1.
In this embodiment, the heating device 14 is an air source heat pump, and the refrigerant is a freon vapor compression type hot water supply unit capable of absorbing heat in air based on the reverse carnot cycle theorem. The inlet of the heating device 14 is connected with the water main II 9, and the outlet of the heating device 14 is connected with the water main I5.
The circulating water pump 6 is arranged on the second water pipe 9 and is used for pumping out the water in the water tank 1 and then sending the water into the heating device 14.
The hot water intake pipe 12 is connected with the first water pipe 5.
The cold water supplementing pipe 13 is connected with the lower position of the water tank 1.
After the cold water uniformly flows out of the water tank 1 from the water distribution pipe 10 at the bottom, the cold water flows through the water inlet pipe II 9 to the circulating water pump 6 to be pressurized, and then enters the heating device 14 to heat and raise the temperature, because the cold water entering the heating device 14 is cold water with relatively low temperature in the water tank 1, the heating efficiency of the heating device 14 is highest and is most energy-saving, the heated hot water after heating and raising the temperature flows through the water inlet pipe I5 and is divided into two paths, one path is connected with the hot water intake pipe 12 (the temperature of the domestic hot water discharged from the position is highest), the other path is connected with each water branch pipe 4, and the hot water enters the water tank 1 through the water branch pipe 4 to form a water flow system circulation. Hot water can also flow out from the water tank 1 to the hot water intake pipe 12 through the upper water distribution pipe 3 and the branch water pipe 4. When the liquid level is higher than the liquid level H1, the electric valve V1 is opened, and other electric valves are closed. When the liquid level is higher than the liquid level H2 and lower than the liquid level H1, the electric valve V2 is opened, and other electric valves are closed. Similarly, the corresponding electric valve is selectively opened according to the water surface, and other electric valves are closed, so that the hot water flowing into or out of the water tank 1 is ensured to be at the highest water surface in the water tank 1 to the greatest extent, and the layered condition of the temperature of the cold water and the hot water in the water tank 1 is created. The cold water and the hot water in the water tank 1 are layered at natural temperature, the hot water is positioned at the upper part, and the cold water is positioned at the lower part. In the heating cycle process, the height of the cold-hot water interface is changed, the water level of the water tank is also changed, but the heated hot water is always at the relatively upper part, and the cold water before heating is always at the relatively lower part, so that the maximum anti-breaking effect is realized. When cold water with lower temperature is pumped out from the water tank 1 by the circulating water pump 6 and is sent into the heating device 14, the heating efficiency of the heating device 14 is obviously improved, so that the circulating water quantity is reduced or the heating time is shortened, and the aim of heating most of water in the water tank is fulfilled. A cold water supplementing pipe 13 is arranged at the lower position of the water tank 1, and supplementing water outside the water tank 1 flows into the pipe, so that the supplementing water with lower temperature is positioned on the lower water surface of the water tank 1, and the influence of the supplementing cold water on the temperature layering of cold and hot water in the water tank 1 is reduced. Meanwhile, the hot water intake pipe 12 is discharged from the first water pipe 5, and the discharged water is water with higher temperature, so that the quality of the heating water temperature of the process water is ensured.
In addition, it should be noted that the specific embodiments described in the present specification may vary from part to part, from name to name, etc., and the above description in the present specification is merely illustrative of the structure of the present utility model. All equivalent or simple changes of the structure, characteristics and principle according to the inventive concept are included in the protection scope of the present patent. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the utility model as defined in the accompanying claims.
Claims (10)
1. A variable liquid level hot and cold water temperature layered circulating device comprises a water tank, a first water main and a second water main; the method is characterized in that: the device also comprises a liquid level sensor, an upper water distribution pipe, a branch water pipe and a bottom water distribution pipe; the liquid level sensor is arranged in the water tank; the upper water distribution pipe is arranged in the water tank, the upper water distribution pipe is multi-layered, and the upper water distribution pipe is sequentially arranged in the water tank from top to bottom; the branch water pipe is arranged outside the water tank and is connected with the upper water distribution pipe; the branch water pipes are also multi-layered and are sequentially arranged from top to bottom, and the branch water pipes are matched with the upper water distribution pipes one by one; each branch water pipe is provided with an electric valve; the first water main is connected with the branch water pipe; the bottom water distribution pipes are arranged in the water tank and are positioned below all the upper water distribution pipes; and the second water main is connected with the bottom water distribution pipe.
2. The variable level hot and cold water temperature stratified circulation device according to claim 1, wherein: the upper water distribution pipe is provided with water holes.
3. The variable level hot and cold water temperature stratified circulation device according to claim 1, wherein: the water distribution pipe at the bottom is provided with water holes.
4. The variable level hot and cold water temperature stratified circulation device according to claim 1, wherein: the upper water distribution pipe and the bottom water distribution pipe are horizontally arranged.
5. The variable level hot and cold water temperature stratified circulation device according to any one of claims 1-4, wherein: the system also comprises a circulating water pump and a refrigerating device; an inlet of the refrigerating device is connected with the first water main, and an outlet of the refrigerating device is connected with the second water main; the circulating water pump is arranged on the first water main.
6. The variable level hot and cold water temperature stratified circulation device according to claim 5, wherein: the water tank also comprises a cold water intake pipe which is connected with the second water main or the bottom of the water tank.
7. The variable level hot and cold water temperature stratified circulation device according to claim 5, wherein: the water tank also comprises a hot water supplementing pipe which is connected with the high position of the water tank.
8. The variable level hot and cold water temperature stratified circulation device according to any one of claims 1-4, wherein: the device also comprises a circulating water pump and a heating device; the inlet of the heating device is connected with the second water main, and the outlet of the heating device is connected with the first water main; the circulating water pump is arranged on the second water main.
9. The variable level hot and cold water temperature stratified circulation device of claim 8, wherein: the water heater also comprises a hot water intake pipe which is connected with the primary water pipe.
10. The variable level hot and cold water temperature stratified circulation device of claim 8, wherein: the water tank also comprises a cold water supplementing pipe which is connected with the lower position of the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321626321.3U CN220103501U (en) | 2023-06-26 | 2023-06-26 | Layered circulation device for changing liquid level, cold water temperature and hot water temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321626321.3U CN220103501U (en) | 2023-06-26 | 2023-06-26 | Layered circulation device for changing liquid level, cold water temperature and hot water temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220103501U true CN220103501U (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321626321.3U Active CN220103501U (en) | 2023-06-26 | 2023-06-26 | Layered circulation device for changing liquid level, cold water temperature and hot water temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220103501U (en) |
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2023
- 2023-06-26 CN CN202321626321.3U patent/CN220103501U/en active Active
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