CN113619457A - Semiconductor refrigeration type vehicle-mounted air conditioner back cushion - Google Patents
Semiconductor refrigeration type vehicle-mounted air conditioner back cushion Download PDFInfo
- Publication number
- CN113619457A CN113619457A CN202110813121.8A CN202110813121A CN113619457A CN 113619457 A CN113619457 A CN 113619457A CN 202110813121 A CN202110813121 A CN 202110813121A CN 113619457 A CN113619457 A CN 113619457A
- Authority
- CN
- China
- Prior art keywords
- air
- internal
- heat
- external
- circulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/56—Heating or ventilating devices
- B60N2/5678—Heating or ventilating devices characterised by electrical systems
- B60N2/5692—Refrigerating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/56—Heating or ventilating devices
- B60N2/5607—Heating or ventilating devices characterised by convection
- B60N2/5621—Heating or ventilating devices characterised by convection by air
- B60N2/5642—Heating or ventilating devices characterised by convection by air with circulation of air through a layer inside the seat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/56—Heating or ventilating devices
- B60N2/5678—Heating or ventilating devices characterised by electrical systems
- B60N2/5685—Resistance
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a semiconductor refrigeration type vehicle-mounted air conditioner back cushion which comprises a base body and a base body, wherein the base body plays a bearing role; the heat-conducting skin is used for transferring heat and is connected with the base body; the air conditioning unit is provided with two sets of air circulation heat exchange modes of external air external circulation and internal air internal circulation, is isolated from the outside when the internal air is refrigerated or heated, generates hot air or cold air, and is arranged in the base body; the two vortex fans are installed in opposite directions, and are respectively positioned on two sides of the radiator, so that the thickness of a product can be effectively reduced compared with the traditional design of the axial flow fan installed on the upper part of the radiator for radiating, the product is lighter and thinner, the air inlet and outlet duct design adopts two sets of air circulation heat exchange modes of external air external circulation and internal air internal circulation, the air in the air conditioner cushion can be isolated from the outside during refrigeration or heating, refrigeration or cooling is continuously carried out through the internal circulation, and the temperature rising and falling capacity of the product is improved.
Description
Technical Field
The invention relates to the technical field of semiconductor refrigeration temperature control, in particular to a semiconductor refrigeration type vehicle-mounted air conditioner back cushion.
Background
In recent years, with the improvement of living standard of people, the variety of novel household electrical appliances is rapidly increased, the miniaturization trend of the electrical appliances is very obvious, the demand and the purchasing power of people on health and care products are increased at a high speed every year, various massage back cushions and heating back cushion products are layered, although some back cushion products in the refrigeration aspect are provided, most of the air-conditioning seat back cushions adopt simple physical cooling methods such as fan direct blowing and water circulation, the forced cooling effect is poor, an air-conditioning seat back cushion with a small size and a cold and hot function is developed, and the air-conditioning seat back cushion has a very large market chance in crowds such as office staff, game players, vehicle drivers and the like.
For example, chinese patent CN200910256471.8 discloses a cushion for driver sitting in the back of a car for both winter and summer. The waste heat of the cooling water in the water tank can be utilized for heating in winter, and the natural wind can be utilized for refrigeration in summer, so that the energy consumption is low; the back cushion of this application adopts traditional hydrologic cycle physics cooling method, and refrigeration effect is poor.
Disclosure of Invention
The invention mainly solves the problem of poor heating and refrigerating effects of the air-conditioning back cushion in the prior art; the semiconductor refrigeration type vehicle-mounted air conditioner back cushion has the advantages of small size, light weight, high acting speed, long service life and easiness in control.
The technical problem of the invention is mainly solved by the following technical scheme: a semiconductor refrigeration type vehicle-mounted air conditioner back cushion comprises a base body, a base body and a base seat, wherein the base body plays a bearing role; the heat-conducting skin is used for transferring heat and is connected with the base body; and the air conditioning unit is provided with two sets of air circulation heat exchange modes of external air external circulation and internal air internal circulation, is isolated from the outside when the internal air is refrigerated or heated, generates hot air or cold air, and is arranged in the base body. The air conditioning unit that sets up is small-size, light in weight, does not have mechanical transmission part, and the noise is not had in the work, does not have liquid, gaseous working medium, therefore the non-staining environment, through switching current direction, can change into heating operating condition from the refrigeration state, and has the advantage that the effect is fast, long service life, easy control.
Preferably, the air conditioning unit comprises a shell, a cavity is arranged in the shell, an installation environment is provided, and the air conditioning unit is fixedly installed in the base; the semiconductor refrigerating sheet is fixedly arranged in the shell, when positive voltage is input, one side close to the heat-conducting skin is used for refrigerating, and the side far away from the heat-conducting skin is used for heating; the radiator is used for transmitting the temperature generated by the semiconductor refrigerating sheet and performing gas heat exchange and is tightly pressed on the semiconductor refrigerating sheet; and a fan installed in the housing for externally circulating the external air and internally circulating the internal air. The external air circulation and the air circulation in the internal sealed space are respectively realized through the two groups of fans, and the internal circulating air is used as a transmission medium, so that the internal air is repeatedly and circularly heated and refrigerated during heating and refrigeration, and the purposes of reducing energy consumption and improving heating and refrigeration capacity are achieved.
Preferably, the base body comprises a hard framework and a supporting piece used for supporting the heat-conducting covering, the hard framework is formed by integrally molding plastic, the hard framework is provided with a framework flanging, the framework flanging is provided with a plurality of ventilation holes, and the supporting piece is fixedly connected with the hard framework. The framework is a rear panel of the air-conditioning back cushion, a closed inner space is defined by the framework and the heat-conducting skin and used for flowing circulation of cold and hot air in the air-conditioning back cushion, a flanging is arranged towards the rear part of the periphery of the hard framework to prevent an external air inlet and an external air outlet of the air-conditioning unit from being blocked by a seat skin, and meanwhile, a series of ventilation round holes are arranged on the flanging to ensure that air in the external air inlet and outlet can be communicated with the environment, so that the heat dissipation effect is improved.
Preferably, the heat-conducting skin is formed by pressure casting of a silica gel material with a heat conductivity coefficient larger than 1W/m.K, and a layer of reticular fiber material is pressed on the surface of the heat-conducting skin. The skin is beneficial to quickly transferring heat when being attached to the back of a human body, and the inner surface of the skin is pressed with a layer of reticular fiber material for enhancing the tensile strength of the outer skin.
Preferably, the housing is provided with an external air inlet and an external air outlet for external circulation of external air and an internal air inlet and an internal air outlet for internal circulation of internal air, the heat sink includes an external heat sink and an internal heat sink, and the fan includes an external turbofan and an internal turbofan. Two vortex fans are installed in opposite directions, each fan independently blows air to two sides of the semiconductor refrigerating sheet, the two fans are respectively located on two sides of the radiator, the external turbo fan works to suck external air from an external air inlet and to go out from an external air outlet after the external radiator carries out heat exchange, external air external circulation is realized, the internal turbo fan works to suck internal air from an internal air inlet and to go out from an internal air outlet after the internal radiator carries out heat exchange, and internal air internal circulation is realized.
Preferably, heat-conducting silicone grease is arranged between the radiator and the semiconductor refrigerating sheet. So that the temperature on the surface of the semiconductor refrigerating sheet can be quickly conducted to the radiator.
Preferably, heat insulation foam is arranged between the radiator and the shell. The air that can prevent to flow through two radiators circulates each other, promotes the product and heats the ability.
The invention has the beneficial effects that: (1) two vortex fans are installed in opposite directions, each fan independently blows air to two side faces of the semiconductor refrigerating sheet, and the two fans are respectively located on two sides of the radiator, so that the thickness of a product can be effectively reduced, and the product is lighter and thinner compared with the traditional design of installing an axial flow fan on the upper portion of the radiator for heat dissipation; (2) the air inlet and outlet duct is designed in a heat exchange mode of two sets of air circulation of external air external circulation and internal air internal circulation, so that the air in the air-conditioning back cushion can be isolated from the outside during refrigeration or heating, and the refrigeration or cooling is continuously carried out through the internal circulation, thereby improving the temperature rise and fall capacity of products, and simultaneously improving the temperature response speed of the air-conditioning back cushion and reducing the power consumption; (3) skeleton rear portion design has the turn-ups part, and has beaten a series of ventilation holes on the turn-ups, prevents effectively that the air inlet of external circulation from being plugged up by the seat surface, promotes external circulation's heat dissipation or endothermic efficiency: (4) the surface of the product is made of a material with high heat conductivity coefficient as a skin fabric, so that the cool and warm feeling of the back of a human body can be improved, and better cool and warm feeling can be obtained.
Drawings
Fig. 1 is a schematic structural view of an air conditioning cushion according to an embodiment of the present invention.
Fig. 2 is a schematic view of the back of an air conditioning cushion of an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an air conditioning unit according to an embodiment of the present invention.
Fig. 4 is a schematic rear view of an air conditioning unit according to an embodiment of the present invention.
In the figure, the shell is 1, the shell is 2, the external turbofan is 3, the internal air outlet is 4, the semiconductor refrigeration piece is 5, the internal radiator is 6, the internal air inlet is 7, the external air outlet is 8, the external radiator is 9, the external air inlet is 10, the air conditioning unit is 11, the vent hole is 12, the flanging is 13, the hard framework is 14, and the silica gel heat-conducting skin is covered.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): a semiconductor refrigeration type vehicle-mounted air conditioner back cushion is shown in figures 1-2 and comprises a hard framework, a supporting piece fixedly connected with the hard framework, a silica gel heat-conducting covering and an air conditioner unit.
The hard framework 13 is integrally formed by injection molding of plastic, a supporting piece is arranged in front of the hard framework and used for supporting an external heat-conducting skin of an air-conditioning cushion, the framework is a rear panel of the air-conditioning cushion, a closed internal space is enclosed by the framework and the external heat-conducting skin and used for flowing circulation of cold and hot air inside the air-conditioning cushion, a flanging 12 is arranged on the periphery of the hard framework towards the rear part, an external air inlet and an external air outlet are prevented from being blocked by a seat surface, meanwhile, a series of air vents 11 are arranged on the flanging, and the air in the external air inlet and outlet can be communicated with the environment, so that the heat dissipation effect is improved.
The silica gel heat-conducting skin 14 is formed by casting a silica gel material with the heat conductivity coefficient larger than 1W/m.K, the periphery of the silica gel heat-conducting skin is attached to the hard framework, the silica gel skin with good heat conductivity is beneficial to rapidly transferring heat when being attached to the back of a human body, and a layer of reticular fiber material is pressed on the inner surface of the skin and used for enhancing the tensile strength of the outer skin.
As shown in fig. 3 and 4, the air conditioning unit 10 is composed of the following parts:
the semiconductor refrigeration piece 4 is a core part of the air conditioner back cushion, when 5-12V direct current voltage is introduced to the semiconductor thermoelectric refrigeration piece, one surface of the refrigeration piece, facing to the inner cavity of the air conditioner back cushion, is used for refrigerating, and the other surface of the refrigeration piece, facing to the outer side of the air conditioner back cushion, is used for heating, and the other surface of the refrigeration piece, facing to the inner side of the air conditioner back cushion, is used for refrigerating, and the side of the air conditioner back cushion, close to the back of a person, is used for the inner side, and the side of the air conditioner back cushion, close to a vehicle seat, is used for the outer side.
The invention relates to a radiator, which adopts two radiators made of materials with good heat conductivity (such as aluminum alloy), one is arranged at the inner side of an air-conditioning back cushion and is used as an internal radiator 5, the other is arranged at the outer side of the air-conditioning back cushion and is used as an external radiator 8, the two radiators are tightly pressed on a semiconductor refrigerating sheet through a shell of an air-conditioning unit, a layer of thin heat-conducting silicone grease is coated between the radiator and the refrigerating sheet, the temperature on the surface of the refrigerating sheet can be quickly conducted to the radiators, and heat-insulating foam is adhered between the heat lower parts of the two radiators and the shell, so that the air flowing through the two radiators can be prevented from mutually circulating.
The fan adopts two groups of frameless direct-current turbofan, which are divided into an external turbofan 2 and an internal turbofan, the external turbofan and the internal turbofan are arranged in a plastic shell, a 5-12V power supply is introduced, the fan rotates, air is sucked from an air inlet of the top shell of the fan and blown out from the space between the shell on the side surface of the fan and a radiator fin to the outside of an air outlet, when the air flows through a radiator, heat exchange is carried out with the radiator, the temperature of air blown through the radiator on the cold surface of the semiconductor thermoelectric cooling sheet is reduced, and the temperature of air blown through the radiator on the hot surface of the semiconductor thermoelectric cooling sheet is increased.
The two fans are respectively fixed on the shells on two sides of the radiator, the mounting directions of the two fans are opposite, the top of one fan faces the outside of the air-conditioning back cushion, air is sucked from the outside and blown back to the outside through the outer side radiator, and the top of the other fan faces inwards, air is sucked from the inner lower part of the air-conditioning back cushion and blown back to the inner upper part through the inner side radiator.
The external air inlet, the external turbofan, the external radiator and the external air outlet form external circulation of external air, and the internal air inlet, the internal turbofan, the internal radiator and the internal air outlet form internal circulation of internal air.
The invention can also be provided with a temperature sensor, the temperature sensor is arranged in the shell to detect the temperature information in the shell, the detected temperature information is transmitted to the vehicle-mounted controller or the single MCU, and the intelligent refrigeration or heating of the semiconductor refrigeration chip is carried out through the temperature threshold value set by the MCU.
The semiconductor refrigerating sheet can be cooled or heated by the temperature remote controller, and a display screen is arranged on the base body or the temperature remote controller for displaying the temperature.
The power supply module is electrified in a USB interface mode or is powered by a single lithium battery, and the power supply mode can be selected in various modes.
The working principle of the invention is as follows:
carry out refrigeration work during, let in 5~12V direct current voltage on the thermoelectric refrigeration piece of semiconductor, the refrigeration piece is towards the one side refrigeration of the inside cavity of air conditioner cushion, heat towards outside one side, inside turbofan work, inhale inside gas from inside air intake, go out from inside air outlet after inside radiator carries out the air conditioning exchange, realize inside gaseous internal circulation, after cold exchange many times, the gas temperature of the inner space of base member descends fast, the user experiences cool meaning through covering heat conduction, outside gas carries out outside heat exchange circulation, can not exert an influence to the cooling of inside gas, the gaseous rapid cooling of inside has been realized.
When the temperature rise operation is carried out, a voltage of-5V to-12V is input to the semiconductor thermoelectric refrigerating sheet, one surface of the refrigerating sheet facing the inner side of the air conditioner cushion becomes a heating surface, the surface facing the outer side is a refrigerating surface, the internal turbofan works to suck internal gas from the internal air inlet, the internal gas is subjected to hot gas exchange through the internal radiator and then is discharged from the internal air outlet, internal circulation of the internal gas is realized, after multiple times of heat exchange, the gas temperature in the internal space of the base body is rapidly raised, a user feels hot feeling through the heat conducting skin, the external gas is subjected to external cold exchange circulation, the temperature rise of the internal gas is not influenced, and the rapid temperature rise of the internal gas is realized.
The semiconductor refrigerating sheet has the advantages of small size, light weight, no mechanical transmission part, no noise in work, no liquid or gaseous working medium, no environmental pollution, no influence of space direction and gravity on refrigerating parameters, convenient regulation of refrigerating speed by regulating the magnitude of working current, quick action speed, long service life and easy control.
The back cushion is placed in front of the back of a seat and is in contact with the waist and the back of a person to realize heat exchange with the human body, a user can realize heating and refrigerating switching through the temperature regulator, and the product with the functions of the cold and hot air-conditioning seat back cushion is realized, is particularly suitable for being used on a vehicle and can also be used in various application occasions such as families, offices and the like by supplying power by 5V-12V.
The air-conditioning back cushion is internally provided with a sealed space, external air circulation and air circulation in the internal sealed space are respectively realized through the two groups of fans, and the internally circulated air is used as a transmission medium, so that internal air is repeatedly and circularly heated and refrigerated during heating and refrigeration, and the purposes of reducing energy consumption and improving heating and refrigeration capacity are achieved.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (7)
1. The utility model provides a semiconductor refrigeration formula vehicle-mounted air conditioner cushion which characterized in that includes:
the basal body plays a bearing role;
the heat-conducting skin is used for transferring heat and is connected with the base body;
and the air conditioning unit is provided with two sets of air circulation heat exchange modes of external air external circulation and internal air internal circulation, is isolated from the outside when the internal air is refrigerated or heated, generates hot air or cold air, and is arranged in the base body.
2. The semiconductor refrigeration type vehicle-mounted air conditioning cushion as claimed in claim 1,
the air conditioning unit comprises
The shell is internally provided with a cavity for providing an installation environment and is fixedly arranged in the base body;
the semiconductor refrigerating sheet is fixedly arranged in the shell, when positive voltage is input, one side close to the heat-conducting skin is used for refrigerating, and the side far away from the heat-conducting skin is used for heating;
the radiator is used for transmitting the temperature generated by the semiconductor refrigerating sheet and performing gas heat exchange and is tightly pressed on the semiconductor refrigerating sheet;
and a fan installed in the housing for externally circulating the external air and internally circulating the internal air.
3. The semiconductor refrigeration type vehicle-mounted air conditioning cushion as claimed in claim 1,
the base member includes stereoplasm skeleton and is used for supporting the support piece of heat conduction covering, the stereoplasm skeleton is wholly moulded plastics by plastics and is formed, the stereoplasm skeleton is provided with the skeleton turn-ups, is provided with a plurality of ventilation hole on the skeleton turn-ups, support piece and stereoplasm skeleton fixed connection.
4. A semiconductor cooling type vehicle-mounted air conditioning cushion as claimed in claim 1, 2 or 3,
the heat-conducting skin is formed by die-casting a silica gel material with the heat conductivity coefficient larger than 1W/m.K, and a layer of reticular fiber material is pressed on the surface of the heat-conducting skin.
5. The semiconductor cooling type vehicle-mounted air conditioning back cushion as claimed in claim 2,
the casing is provided with an external air inlet and an external air outlet for external circulation of external air and an internal air inlet and an internal air outlet for internal circulation of internal air, the radiator comprises an external radiator and an internal radiator, and the fan comprises an external turbofan and an internal turbofan.
6. The semiconductor cooling type vehicle-mounted air conditioning back cushion as claimed in claim 2,
and heat-conducting silicone grease is arranged between the radiator and the semiconductor refrigerating sheet.
7. The semiconductor cooling type vehicle-mounted air conditioning back cushion as claimed in claim 2,
and heat insulation foam is arranged between the radiator and the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110813121.8A CN113619457A (en) | 2021-07-19 | 2021-07-19 | Semiconductor refrigeration type vehicle-mounted air conditioner back cushion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110813121.8A CN113619457A (en) | 2021-07-19 | 2021-07-19 | Semiconductor refrigeration type vehicle-mounted air conditioner back cushion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113619457A true CN113619457A (en) | 2021-11-09 |
Family
ID=78380088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110813121.8A Pending CN113619457A (en) | 2021-07-19 | 2021-07-19 | Semiconductor refrigeration type vehicle-mounted air conditioner back cushion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113619457A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001299A (en) * | 2010-10-15 | 2011-04-06 | 天津大福杉峰电子有限公司 | Thermoelectric semiconductor air-conditioning seat module and seat air-conditioning system |
| CN203186153U (en) * | 2013-02-25 | 2013-09-11 | 深圳市天能予达节能技术有限公司 | Chair and temperature adjusting device thereof |
| CN203819085U (en) * | 2014-05-15 | 2014-09-10 | 孙瑞祥 | Cold and warm seat for vehicle |
| CN107599913A (en) * | 2017-09-22 | 2018-01-19 | 比赫电气（太仓）有限公司 | A kind of semiconductor temperature module for automotive seat |
| US20200001755A1 (en) * | 2017-03-20 | 2020-01-02 | Langfang Golden Time Technology Developme Co., Ltd. | Automobile seat and working principle thereof and automobile |
-
2021
- 2021-07-19 CN CN202110813121.8A patent/CN113619457A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001299A (en) * | 2010-10-15 | 2011-04-06 | 天津大福杉峰电子有限公司 | Thermoelectric semiconductor air-conditioning seat module and seat air-conditioning system |
| CN203186153U (en) * | 2013-02-25 | 2013-09-11 | 深圳市天能予达节能技术有限公司 | Chair and temperature adjusting device thereof |
| CN203819085U (en) * | 2014-05-15 | 2014-09-10 | 孙瑞祥 | Cold and warm seat for vehicle |
| US20200001755A1 (en) * | 2017-03-20 | 2020-01-02 | Langfang Golden Time Technology Developme Co., Ltd. | Automobile seat and working principle thereof and automobile |
| CN107599913A (en) * | 2017-09-22 | 2018-01-19 | 比赫电气（太仓）有限公司 | A kind of semiconductor temperature module for automotive seat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102748810A (en) | Air conditioner indoor unit capable of supplying air up and down and control method thereof | |
| CN205568097U (en) | Solar energy air -conditioning umbrella | |
| CN201251254Y (en) | Heating and cooling air generating device | |
| CN201263532Y (en) | Flexible air conditioner pad | |
| CN205585697U (en) | Air -conditioning mattress | |
| CN210832376U (en) | Cold and warm mini air-conditioning fan | |
| CN206906973U (en) | A kind of semiconductor refrigerating heat dissipation pad for notebook computer | |
| CN203063735U (en) | Air-conditioning system for automobile seat | |
| TWI386606B (en) | Carried air-condition system | |
| CN113619457A (en) | Semiconductor refrigeration type vehicle-mounted air conditioner back cushion | |
| CN107244273A (en) | A kind of distributed automobile seat temperature regulating device based on semiconductive thin film | |
| CN201324049Y (en) | Novel cold-storing type air conditioning bed | |
| CN208108357U (en) | A kind of tubular electric fan with water cooling | |
| CN202209730U (en) | Indoor unit of air-conditioner | |
| TWM384298U (en) | Cold/hot dual-purposed temperature-adjusting device | |
| CN2794348Y (en) | Electronic cold and warm air conditioning quilt | |
| CN217357311U (en) | Semiconductor refrigeration fan | |
| CN2781927Y (en) | Inflator for electronic cooling heating mattress | |
| CN212878591U (en) | Office cushion | |
| CN220554527U (en) | Foot warmer | |
| CN217503843U (en) | Refrigerating device and cold and warm air blower with same | |
| CN218219685U (en) | Single sofa with heating and ventilation functions | |
| CN220017495U (en) | Combined warmer | |
| CN201691474U (en) | Cold air seat cushion | |
| CN219601013U (en) | Cold and hot ventilation system of automobile seat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211109 |
|
| RJ01 | Rejection of invention patent application after publication |