CN114909856A - Refrigerating system capable of providing negative pressure function - Google Patents
Refrigerating system capable of providing negative pressure function Download PDFInfo
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- CN114909856A CN114909856A CN202210455918.XA CN202210455918A CN114909856A CN 114909856 A CN114909856 A CN 114909856A CN 202210455918 A CN202210455918 A CN 202210455918A CN 114909856 A CN114909856 A CN 114909856A
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- compressor
- refrigeration
- electromagnetic valve
- module
- air
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- 238000005057 refrigeration Methods 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000003507 refrigerant Substances 0.000 claims abstract description 9
- 238000007710 freezing Methods 0.000 claims abstract description 7
- 230000008014 freezing Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 8
- 235000013311 vegetables Nutrition 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 4
- 235000013305 food Nutrition 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 235000010678 Paulownia tomentosa Nutrition 0.000 description 1
- 240000002834 Paulownia tomentosa Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009920 food preservation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/02—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by absorption or adsorption
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/06—Superheaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention discloses a refrigerating system capable of providing a negative pressure function, and aims to overcome the defects that the humidity of air in a refrigerating chamber of an existing refrigerator is low and vegetable preservation is not facilitated. The refrigeration system comprises a refrigeration module and a vacuumizing module, wherein the refrigeration module comprises a compressor, a condenser, a heat regenerator, a capillary tube, a refrigeration evaporator and a freezing evaporator; the vacuumizing module comprises a compressor, a water storage barrel, a humidifier, a first electromagnetic valve, a vacuum drawer, a second electromagnetic valve, a one-way valve, a gas storage bag and a third electromagnetic valve, wherein the compressor comprises a refrigerant compressing function and an air compressing function; the vacuumizing module can provide a negative pressure function for the refrigerator, namely, the vacuumizing module vacuumizes the vacuum drawer by controlling the opening and closing of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve and can also inject water into the humidifier. The invention provides a refrigeration system which can realize a refrigeration function and a negative pressure function simultaneously, and is beneficial to long-time fresh storage of vegetable food.
Description
Technical Field
The invention relates to the field of refrigerator manufacturing, in particular to a refrigerating system of a refrigerator.
Background
With the development of national economy, the living standard of people is gradually improved. The requirements of common people on the functions of the refrigerator are more and more diversified, for example, a vacuum drawer needs to be arranged in the refrigerator, and when food is placed in the vacuum drawer, the food preservation effect is better. Therefore, a vacuum pump is required to be installed in the refrigerator for evacuating the vacuum drawer.
In addition, a humidifier needs to be arranged in the refrigerating chamber of the refrigerator, vegetables are usually stored in the refrigerating chamber of the refrigerator, but the humidity of air in the refrigerating chamber is usually low due to the refrigeration, so that the vegetables can be shriveled, the freshness of the vegetables is not facilitated, and the humidifier needs to be arranged in the refrigerating chamber. A water storage tank is usually arranged in the refrigerator, and a water pump is needed to convey water in the water storage tank to a water storage device in the humidifier.
Chinese patent publication No. CN207741404U, announcement day 2018 8 month 17 days, utility model's name is a good fortune cabinet water tank that is used for the refrigerating system of cupboard water tank and has it, and this application discloses a refrigerating system for cupboard water tank, a refrigerating system for good fortune cabinet water tank includes: refrigerating unit and refrigeration box, the refrigerating unit sets up in the refrigeration box, and the refrigeration box is kept apart with the refrigeration compartment of tung cabinet water tank, and the refrigerating unit have with air supply outlet and return air inlet of refrigeration compartment butt joint, wherein divide into refrigeration district and radiating area in the cold box, the refrigeration district communicates with air supply outlet and return air inlet respectively, the refrigeration district is located the top in radiating area, and the refrigeration district is spaced apart through the median septum with the radiating area. According to the utility model discloses a temperature demand that is used for the refrigerating system of cupboard refrigerator, and the effective use volume in the multiplicable refrigerator satisfies a plurality of refrigeration rooms simultaneously. It has the defect that the stored vegetables cannot be preserved for a long time.
Disclosure of Invention
The invention overcomes the defects that the humidity of the air in the refrigerating chamber of the existing refrigerator is lower and the vegetable preservation is not facilitated, and provides a refrigerating system capable of providing a negative pressure function, which can realize the refrigerating function of the refrigerator, can also provide the negative pressure function, vacuumizes a vacuum drawer and injects water into a humidifier.
In order to solve the technical problems, the invention adopts the following technical scheme: a refrigerating system capable of providing a negative pressure function comprises a refrigerating module and a vacuumizing module, wherein the vacuumizing module comprises a compressor, a water storage barrel, a humidifier, a first electromagnetic valve, a vacuum drawer, a second electromagnetic valve, a one-way valve, a gas storage bag and a third electromagnetic valve, and the compressor comprises a refrigerant compressing function and an air compressing function; the vacuumizing module can provide a negative pressure function for the refrigerator, namely, the vacuumizing module vacuumizes the vacuum drawer by controlling the opening and closing of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve and can also inject water into the humidifier. The invention provides a refrigerating system capable of realizing a refrigerating function and a negative pressure function simultaneously, overcomes the defects that vegetables are shriveled and not beneficial to fresh keeping of the vegetables due to low humidity of air in a refrigerating chamber caused by refrigerating of a traditional refrigerating chamber, and enables stored vegetable food to be stored fresh for a long time.
Preferably, the vacuumizing module compresses air through the compressor, the second electromagnetic valve is closed, the third electromagnetic valve is closed, the first electromagnetic valve is opened, the pressure in the water storage device in the humidifier is reduced, water in the water storage barrel enters the water storage device of the humidifier, the water filling function of the humidifier is achieved, and the compressed air in the compressor enters the air storage bag through the one-way valve. The device can realize the integration of water supply and humidification, so that the whole humidification, vacuumizing and refrigeration form a complete system, thereby greatly improving the overall operation efficiency of the system; wherein, a water pump is arranged between the humidifier and the water storage barrel and is used for pumping water from the water storage barrel.
Preferably, the vacuumizing module compresses air through the compressor, closes the first electromagnetic valve, closes the third electromagnetic valve and opens the second electromagnetic valve, and air in the vacuum drawer is sucked away by the compressor and enters the air storage bag through the one-way valve. The gas storage bag can realize temporary storage of extracted air; and the one-way valve can avoid air backflow, so that the vacuum drawer can realize the operation of complete vacuum pumping.
Preferably, the compressed air in the air storage bag in the vacuum pumping module is slowly released through a solenoid valve III.
Preferably, the refrigeration module comprises the compressor, a condenser, a heat regenerator, a capillary tube, a refrigeration evaporator and a freezing evaporator.
Preferably, said refrigeration module compresses a refrigerant by said compressor, into said condenser, then into said regenerator, then into said capillary tube, then into said refrigeration evaporator, then into said freezing evaporator, then into said regenerator, and finally the refrigerant returns to said compressor. The device can make refrigeration, vacuumizing and humidification be integrated and combined, and make the whole humidification, vacuumizing and refrigeration form a complete system, thereby greatly improving the whole operation efficiency of the system.
Preferably, the compressor includes an upper casing, a middle plate disposed on the middle casing, an upper core disposed between the upper casing and the middle casing, a lower casing, and a lower core disposed between the middle casing and the lower casing. The invention relates to the operation of water and electricity, which has high requirements on the overall safety and the volume of the device, and the structure can well install and combine a refrigeration module and a vacuum-pumping module, thereby improving the overall sealing performance of the system and reducing the overall design volume.
Preferably, the middle shell is welded with an upper air suction pipe, an upper air exhaust pipe and an upper process pipe.
Preferably, the lower shell is welded with a lower air suction pipe, a lower exhaust pipe and a lower process pipe.
Preferably, the outer wall of the lower shell is provided with a plurality of foot plates, and the foot plates are provided with rubber pads. The structure is beneficial to the installation and fixation of the shell.
Compared with the prior art, the invention has the beneficial effects that: (1) the compressor may provide negative pressure to the vacuum drawer. (2) The compressor can provide negative pressure for the humidifier, and water is guided into the humidifier from the water storage barrel. (3) Because two layers of shells are arranged above the refrigerating machine core, the noise of the refrigerator can be reduced.
Drawings
FIG. 1 is a schematic diagram of a refrigeration system capable of providing negative pressure according to the present invention;
FIG. 2 is a schematic external view of the compressor of the present invention;
FIG. 3 is a view of the present invention from the top of the compressor;
FIG. 4 is a cross-sectional view taken at "A-A" in FIG. 3;
in the figure: the air conditioner comprises an upper shell 1, an upper core 2, a middle shell 3, a middle plate 4, a lower shell 5, a lower core 6, a foot plate 7, a rubber pad 8, an upper air suction pipe 9, an upper air discharge pipe 10, an upper process pipe 11, a lower air suction pipe 12, a lower air discharge pipe 13, a lower process pipe 14, a compressor 100, a condenser 201, a heat regenerator 202, a capillary tube 203, a refrigeration evaporator 204, a freezing evaporator 205, a one-way valve 300, an air storage bag 301, a first electromagnetic valve 302, a second electromagnetic valve 303, a third electromagnetic valve 304, a vacuum drawer 305, a humidifier 306 and a water storage barrel 307.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example 1: a refrigeration system capable of providing a negative pressure function is shown in fig. 1 and comprises a refrigeration module and an evacuation module, wherein the refrigeration module comprises a compressor 100, a condenser 201, a heat regenerator 202, a capillary tube 203, a refrigeration evaporator 204 and a freezing evaporator 205, the evacuation module comprises the compressor 100, a water storage barrel 307, a humidifier 306, a solenoid valve I302, a vacuum drawer 305, a solenoid valve II 303, a one-way valve 300, a gas storage bag 301 and a solenoid valve III 304, and the compressor comprises a refrigerant compression function and an air compression function.
As shown in fig. 2, 3, and 4, the compressor includes an upper casing 1, an upper core 2, a middle casing 3, a middle plate 4, a lower casing 5, a lower core 6, a foot plate 7, and a rubber pad 8.
As shown in fig. 2, the middle shell 3 is welded with an upper suction pipe 9, an upper discharge pipe 10 and an upper process pipe 11, and the lower shell 5 is welded with a lower suction pipe 12, a lower discharge pipe 13 and a lower process pipe 14.
As shown in fig. 1 and 4, when the lower core 6 of the compressor is in operation, the refrigerant in the regenerator enters the lower core from the lower suction pipe 12 and is compressed, and the compressed refrigerant is discharged into the condenser through the lower discharge pipe 13, then enters the condenser, then enters the heat exchanger, then enters the capillary tube, then enters the refrigeration evaporator, then enters the freezing evaporator, then returns to the regenerator, and finally returns to the lower core.
As shown in fig. 1 and 4, the compressor provides a negative pressure function for the humidifier, the upper core 2 of the compressor works, the upper core 2 compresses air, the second electromagnetic valve is closed, the third electromagnetic valve is closed, the first electromagnetic valve is opened, the pressure in the water storage device in the humidifier is reduced, water in the water storage barrel enters the water storage device of the humidifier to realize a water injection function for the humidifier, and the air compressed in the compressor enters the air storage bag through the one-way valve.
As shown in fig. 1 and 4, the compressor provides a negative pressure function for the vacuum drawer, the upper core 2 of the compressor works, the upper core 2 compresses air, the first electromagnetic valve is closed, the third electromagnetic valve is closed, the second electromagnetic valve is opened, and the air in the vacuum drawer is sucked away by the compressor and enters the air storage bag through the one-way valve.
The compressed air in the air storage bag in the vacuum pumping module shown in figure 1 is slowly released through the solenoid valve III.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.
Claims (10)
1. A refrigerating system capable of providing a negative pressure function is characterized by comprising a refrigerating module and a vacuumizing module, wherein the vacuumizing module comprises a compressor, a water storage barrel, a humidifier, a first electromagnetic valve, a vacuum drawer, a second electromagnetic valve, a one-way valve, a gas storage bag and a third electromagnetic valve; the vacuumizing module can provide a negative pressure function for the refrigerator, namely, the vacuumizing module vacuumizes the vacuum drawer by controlling the opening and closing of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve and can also inject water into the humidifier.
2. The refrigeration system as claimed in claim 1, wherein the evacuation module compresses air by the compressor, closes the second solenoid valve, closes the third solenoid valve, opens the first solenoid valve, reduces the pressure in the water storage device in the humidifier, allows water in the water storage tank to enter the water storage device in the humidifier, and allows water to be supplied to the humidifier, and allows air compressed by the compressor to enter the air storage bag through the one-way valve.
3. The refrigeration system as claimed in claim 1, wherein the vacuum module compresses air by the compressor, closes the first solenoid valve, closes the third solenoid valve, opens the second solenoid valve, and sucks air in the vacuum drawer away by the compressor and enters the air storage bag through the one-way valve.
4. The refrigerating system capable of providing negative pressure as claimed in claim 1, wherein the compressed air in the air receiver of the vacuum module is slowly released through a solenoid valve.
5. The refrigeration system as claimed in claim 1, wherein the refrigeration module comprises the compressor, the condenser, the heat regenerator, the capillary tube, the refrigeration evaporator, and the freezing evaporator.
6. A refrigeration system capable of providing a negative pressure function as claimed in claim 6, wherein said refrigeration module compresses refrigerant by said compressor, enters said condenser, then enters said regenerator, then enters said capillary tube, then enters said refrigeration evaporator, then enters said regenerator, and finally refrigerant returns to said compressor.
7. A refrigerating system capable of providing negative pressure function as claimed in claim 1, 2, 3, 4, 5 or 6, wherein said compressor comprises an upper shell, a middle plate disposed on the middle shell, an upper core disposed between the upper shell and the middle shell, a lower shell, and a lower core disposed between the middle shell and the lower shell.
8. The refrigeration system as claimed in claim 7, wherein the middle casing has an upper suction pipe, an upper discharge pipe and an upper process pipe welded thereto.
9. The refrigeration system as claimed in claim 7, wherein the lower shell has a lower suction pipe, a lower exhaust pipe and a lower process pipe welded thereto.
10. The refrigeration system as claimed in claim 7, wherein a plurality of foot plates are disposed on the outer wall of the lower housing, and rubber pads are disposed on the foot plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210455918.XA CN114909856A (en) | 2022-04-24 | 2022-04-24 | Refrigerating system capable of providing negative pressure function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210455918.XA CN114909856A (en) | 2022-04-24 | 2022-04-24 | Refrigerating system capable of providing negative pressure function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114909856A true CN114909856A (en) | 2022-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210455918.XA Pending CN114909856A (en) | 2022-04-24 | 2022-04-24 | Refrigerating system capable of providing negative pressure function |
Country Status (1)
| Country | Link |
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| CN (1) | CN114909856A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2624137Y (en) * | 2003-05-14 | 2004-07-07 | 河南新飞电器有限公司 | Vacuum fresh-keeping refrigerator |
| CN102840118A (en) * | 2012-09-10 | 2012-12-26 | 佛山市广顺电器有限公司 | Dual-pressure compressor |
| CN104236194A (en) * | 2014-09-09 | 2014-12-24 | 清华大学 | Open type refrigerator |
| CN205383821U (en) * | 2015-12-18 | 2016-07-13 | 广东交通职业技术学院 | Multi -functional maintenance dolly vacuum pumping system of refrigeration air conditioner |
| CN107641932A (en) * | 2017-10-30 | 2018-01-30 | 郑子健 | A kind of pneumatics washing machine and washing methods |
| CN207145207U (en) * | 2017-08-08 | 2018-03-27 | 威海东兴电子有限公司 | Piston type pneumatic compresses and negative pressure all-in-one |
| WO2020253070A1 (en) * | 2019-06-18 | 2020-12-24 | 苏州思维医疗科技有限公司 | Pressure vacuum control pump |
| CN215809028U (en) * | 2021-08-03 | 2022-02-11 | 中山市浩奇电器有限公司 | Noiseless self-replenishing humidifier |
-
2022
- 2022-04-24 CN CN202210455918.XA patent/CN114909856A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2624137Y (en) * | 2003-05-14 | 2004-07-07 | 河南新飞电器有限公司 | Vacuum fresh-keeping refrigerator |
| CN102840118A (en) * | 2012-09-10 | 2012-12-26 | 佛山市广顺电器有限公司 | Dual-pressure compressor |
| CN104236194A (en) * | 2014-09-09 | 2014-12-24 | 清华大学 | Open type refrigerator |
| CN205383821U (en) * | 2015-12-18 | 2016-07-13 | 广东交通职业技术学院 | Multi -functional maintenance dolly vacuum pumping system of refrigeration air conditioner |
| CN207145207U (en) * | 2017-08-08 | 2018-03-27 | 威海东兴电子有限公司 | Piston type pneumatic compresses and negative pressure all-in-one |
| CN107641932A (en) * | 2017-10-30 | 2018-01-30 | 郑子健 | A kind of pneumatics washing machine and washing methods |
| WO2020253070A1 (en) * | 2019-06-18 | 2020-12-24 | 苏州思维医疗科技有限公司 | Pressure vacuum control pump |
| CN215809028U (en) * | 2021-08-03 | 2022-02-11 | 中山市浩奇电器有限公司 | Noiseless self-replenishing humidifier |
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Application publication date: 20220816 |