CN112587819A - Personal portable air disinfection device and disinfection method based on refrigeration semiconductor - Google Patents
Personal portable air disinfection device and disinfection method based on refrigeration semiconductor Download PDFInfo
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- CN112587819A CN112587819A CN202011492686.2A CN202011492686A CN112587819A CN 112587819 A CN112587819 A CN 112587819A CN 202011492686 A CN202011492686 A CN 202011492686A CN 112587819 A CN112587819 A CN 112587819A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 107
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 33
- 238000005057 refrigeration Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 72
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 16
- 230000001954 sterilising effect Effects 0.000 claims description 10
- 239000003507 refrigerant Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 238000005202 decontamination Methods 0.000 claims 1
- 230000003588 decontaminative effect Effects 0.000 claims 1
- 230000000249 desinfective effect Effects 0.000 claims 1
- 230000001681 protective effect Effects 0.000 abstract description 15
- 244000052616 bacterial pathogen Species 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000889 atomisation Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000005679 Peltier effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/10—Respiratory apparatus with filter elements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- General Engineering & Computer Science (AREA)
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- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Business, Economics & Management (AREA)
- Pulmonology (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
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Abstract
本发明公开了一种基于制冷半导体的个人便携空气消毒装置及消毒方法，属于空气消毒技术领域。本发明的装置包括背板，还包括固定在背板一侧的第一半导体、第二半导体和气泵；气泵通过输气管接入第二半导体中的第二制热部，并通过进气管与外部连通。第二制热部通过热管与第一半导体的第一制热部连通；第一半导体的第一制冷部通过冷管与第二制冷部连通；第一制热部与第一制冷部通过导管连通。第二制冷部与呼吸装置连接。本发明的方法利用气泵将外部气体输入半导体制热部分进行加热，杀灭病菌，并利用半导体制冷部分将空气降温后输入口罩或防护服内，使空气能够循环，在保证防护效果的同时，使人体感到呼吸顺畅，舒适。
The invention discloses a personal portable air disinfection device and a disinfection method based on a refrigeration semiconductor, belonging to the technical field of air disinfection. The device of the present invention includes a backplane, and also includes a first semiconductor, a second semiconductor, and an air pump fixed on one side of the backplane; the air pump is connected to the second heating part in the second semiconductor through an air pipe, and is connected to the outside through the air pipe. Connected. The second heating part communicates with the first heating part of the first semiconductor through a heat pipe; the first cooling part of the first semiconductor communicates with the second refrigerating part through a cold pipe; the first heating part communicates with the first cooling part through a pipe . The second refrigeration part is connected with the breathing apparatus. The method of the invention utilizes the air pump to input the external air into the semiconductor heating part for heating to kill germs, and utilizes the semiconductor refrigeration part to cool the air and then input it into the mask or protective clothing, so that the air can be circulated, and while ensuring the protection effect, the The human body feels smooth and comfortable to breathe.
Description
Technical Field
The invention relates to the technical field of air disinfection, in particular to a personal portable air disinfection device and a disinfection method based on a refrigeration semiconductor.
Background
Semiconductor refrigeration, also known as electronic refrigeration or thermoelectric refrigeration, is a subject developed from 50 s and located at the edge of refrigeration technology and semiconductor technology, and utilizes P-N junctions formed by special semiconductor materials to form thermocouple pairs to generate Peltier effect.
In autumn and winter, epidemic diseases are frequently caused, people mostly adopt masks for protection, air tightness is poor, and germs can easily enter human bodies through the masks; and the mask is arranged, so that the resistance required by human breathing is large. In hospitals, medical care personnel are protected by medical protective clothing. The existing medical protective clothing is strong in airtightness for preventing germs, large resistance needs to be overcome when external air enters the interior of the protective clothing, and accordingly air circulation inside the protective clothing is poor, air is dirty and overheated, and a human body feels uncomfortable easily.
Through retrieval, the Chinese patent application number: ZL 201710719026.5, application publication date: 12 and 22 days in 2017, the invention name is as follows: semiconductor refrigeration heats medical head of a bed breathing machine, the breathing machine of this application includes the organism, the organism in be equipped with the air compression section, air compression section one side be equipped with cold and hot section, the opposite side is equipped with display controller, display controller upper end be equipped with the filtration case, cold and hot section one side be equipped with the atomization segment, atomization segment one side be equipped with pipeline set section, the upper end of air compression section, cold and hot section, atomization segment and pipeline set section be equipped with the fresh air chamber, cold and hot section internal fixation be equipped with the cold and hot ware of semiconductor. The respirator of this application inner structure is complicated, and the volume is great, is difficult for carrying.
Disclosure of Invention
1. Technical problem to be solved by the invention
In view of the problems of strong air tightness, poor internal air circulation, unsmooth human breathing and easy leakage of germs through a mask of the existing protective clothing, the invention provides a personal portable air disinfection device and a disinfection method based on a refrigeration semiconductor.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to a personal portable air disinfection device and a disinfection method based on a refrigeration semiconductor, which comprises a back plate, a second semiconductor and an air pump, wherein the second semiconductor and the air pump are fixed on one side of the back plate; the air pump is connected to a second heating part in the second semiconductor through an air conveying pipe and is communicated with the outside through an air inlet pipe; the second heating part of the second semiconductor is connected with the heating parts of the plurality of semiconductors and is connected to the second refrigerating part through the refrigerating parts of the plurality of semiconductors; the second refrigerating part is connected with the breathing device through an air outlet pipe.
Furthermore, the heating device also comprises a first semiconductor, wherein the second heating part is communicated with the first heating part of the first semiconductor through a heat pipe; the first refrigerating part of the first semiconductor is communicated with the second refrigerating part through a cold pipe; the first heating part is communicated with the first refrigerating part through a conduit.
Furthermore, a first temperature sensing instrument is arranged on the first heating part; and a second temperature sensing instrument is arranged on the second refrigerating part.
Furthermore, a plurality of fans are arranged on the outer surface of the second heating part.
Furthermore, the internal channels of the first heating part, the first refrigerating part, the second heating part and the second refrigerating part are arranged in a roundabout way.
Furthermore, a one-way air valve is arranged at the inlet of the air inlet pipe.
Furthermore, the first semiconductor, the first temperature sensing instrument, the second semiconductor, the second temperature sensing instrument, the fan and the air pump are all electrically connected with the control board and controlled by the control board to act.
Furthermore, a buckle is fixedly arranged on the other side of the back plate.
The method for sterilizing the air by using the device comprises the following steps:
controlling PWM current by using a control board, and setting heating and cooling temperatures of a first semiconductor and a second semiconductor;
step two, after the first temperature sensing instrument and the second temperature sensing instrument measure that the first semiconductor and the second semiconductor reach a set value, opening the one-way air valve;
step three, opening an air pump to suck air; the air is preheated by the second heating part and then is input into the first heating part to be heated to the sterilization temperature; then the refrigerant is conveyed to a first refrigerating part for primary cooling and then conveyed to a second refrigerating part for cooling to a set temperature;
and step four, after the use is finished, closing the air pump and the one-way air valve, and disconnecting the current of the first semiconductor and the current of the second semiconductor.
Furthermore, in the first step, the heating and sterilizing temperature of the first semiconductor is set to be 100-140 ℃, and the cooling temperature of the second semiconductor is set to be 20-25 ℃.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) in view of the problems of strong air tightness, poor internal air circulation, unsmooth human breathing and easy germ leakage of a mask of the existing protective clothing, the personal portable air disinfection device based on the refrigeration semiconductor utilizes the air pump to input external air into the semiconductor heating part for heating, kills germs in the semiconductor heating part, utilizes the semiconductor refrigerating part to cool the air and then outputs the air into the mask or protective clothing, so that the air can circulate, and ensures the protective effect and makes the human body feel smooth and comfortable in breathing.
(2) According to the personal portable air disinfection device based on the refrigeration semiconductor, the characteristics of heating and refrigeration of the semiconductor are utilized simultaneously, so that air flows through two sides of the semiconductor to heat and cool the air, the characteristics of the two sides of the semiconductor during working are fully utilized, and energy waste is reduced. The heating and cooling parts are arranged on two sides of the semiconductor, so that the space is saved, the whole structure of the device is more compact, and the device is small and exquisite and is convenient to carry. Meanwhile, the air pump actively inputs air, so that the breathing resistance and the obstacle are eliminated.
(3) According to the personal portable air disinfection device based on the refrigeration semiconductors, the two groups of semiconductors are arranged for heating and cooling, the two-stage heating and cooling enables air to be heated or cooled to a certain temperature in a short time, and energy is saved when the air is heated to a higher temperature. The circuitous design of heating and refrigeration portion internal passage makes the air flow path increase, guarantees that the air can fully heat and cool.
(4) The invention relates to a personal portable air disinfection method based on a refrigeration semiconductor, which sets a heating part at 140 ℃ and a refrigerating part at 20-25 ℃ and sets the high temperature to be more than 100 ℃, so that germs can be killed sufficiently and the safety of a human body can be ensured. Meanwhile, the air temperature is cooled to 20-25 ℃, so that the air temperature is reduced to be suitable for human body to inhale, and a user feels comfortable.
Drawings
FIG. 1 is a schematic view of the overall structure of the apparatus of the present invention;
FIG. 2 is a schematic diagram of a back plate structure of the device of the present invention;
FIG. 3 is a schematic diagram of two semiconductor structures and connections according to the present invention;
fig. 4 is a schematic view of an internal structure of the first semiconductor heating part according to the present invention.
The reference numbers in the figures illustrate:
1. a control panel; 2. a back plate; 3. a first semiconductor; 31. a first heat generation part; 32. a first refrigerating section; 33. a first temperature sensing instrument; 4. a second semiconductor; 41. a second heat-generating portion; 42. a second refrigerating section; 43. a second temperature sensing instrument; 44. a fan; 5. a heat pipe; 6. cooling the pipe; 7. a gas delivery pipe; 8. a conduit; 9. an air outlet pipe; 10. an air pump; 11. an air inlet pipe; 12. a one-way air valve; 13. and (5) buckling.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
Example 1
Referring to fig. 1, the personal portable air sterilizing device based on the refrigeration semiconductor of the present embodiment includes a back plate 2, and further includes a first semiconductor 3, a second semiconductor 4 and an air pump 10 fixed on one side of the back plate 2; the air pump 10 is connected to the second heating part 41 of the second semiconductor 4 through the air pipe 7 and is communicated with the outside through the air pipe 11. In this embodiment, the inlet of the air inlet pipe 11 is provided with the one-way air valve 12, so that the device is ensured not to contact with the outside air when not in use, and the outside air is prevented from entering the device to cause safety and infection risks.
Referring to fig. 3, the second heating unit 41 of the second semiconductor 4 is connected to the heating units of the plurality of semiconductors, and is connected to the second cooling unit 42 through the cooling units of the plurality of semiconductors; the second refrigerating part 42 is connected with the breathing device through an air outlet pipe 9. In the present embodiment, the second heat generating portion 41 communicates with the first heat generating portion 31 of the first semiconductor 3 through the heat pipe 5; the first refrigerating part 32 of the first semiconductor 3 is communicated with the second refrigerating part 42 through the cold pipe 6; the first heating part 31 and the first cooling part 32 are communicated through a conduit 8. The second refrigerating part 42 is connected with the breathing device through an air outlet pipe 9. The breathing apparatus may be a mask, a protective suit, a helmet, etc., and the breathing apparatus in this embodiment is a protective suit. The device of this embodiment can set up multistage heating and refrigeration part, and multistage heating and cooling make the air can heat or cool off to a certain temperature in the short time, and when heating to higher temperature, has saved the energy. The embodiment only sets two stages for heating and refrigerating, so that the device is more compact and small and is convenient for a user to carry.
In the embodiment, the air pump 10 is used for inputting external air into the semiconductor heating part for heating, so as to kill germs in the external air, and the semiconductor refrigerating part is used for cooling the air and inputting the cooled air into the mask or the protective clothing, so that the air can circulate, and the human body feels smooth and comfortable in breathing while the protective effect is ensured. Meanwhile, the embodiment utilizes the characteristics of semiconductor heating and refrigeration to enable air to flow through two sides of the semiconductor to heat and cool the air, thereby fully utilizing the characteristics of two sides of the semiconductor during working and reducing energy waste. The heating and cooling parts are arranged on two sides of the semiconductor, so that the space is saved, the whole structure of the device is more compact, and the device is small and exquisite and is convenient to carry. Meanwhile, the air pump 10 actively inputs air, so that the breathing resistance and the obstruction are eliminated.
In the present embodiment, the first heating unit 31 is provided with the first temperature sensor 33, and the second cooling unit 42 is provided with the second temperature sensor 43. Two temperature sensing appearance are temperature sensor, with temperature transmission to control panel 1, and convenient to use person knows heating temperature and cooling temperature, in time adjusts. In the present embodiment, 3 fans 44 are provided on the outer surface of the second heating portion 41. The second heating unit 41 is cooled, so that the second cooling unit 42 can perform cooling more efficiently, and the temperature of the output air is low.
Referring to fig. 4, in the present embodiment, the first heating unit 31, the first cooling unit 32, the second heating unit 41, and the second cooling unit 42 have the same structure, and the internal passages are arranged in a winding manner. The circuitous design of heating and refrigeration portion internal passage makes the air flow path increase, guarantees that the air can fully heat and cool.
With reference to fig. 2, the other side of the back plate 2 of the embodiment is fixedly provided with a buckle 13, so that a user can conveniently clamp the device on the protective clothing, and the carrying is convenient.
In this embodiment, the first semiconductor 3, the first temperature sensor 33, the second semiconductor 4, the second temperature sensor 43, the fan 44, and the air pump 10 are electrically connected to the control board 1, and are controlled by the control board 1.
A personal portable air disinfection method based on a refrigeration semiconductor of the present embodiment,
the method comprises the following steps:
step one, controlling PWM current by using the control board 1, and setting heating and cooling temperatures of the first semiconductor 3 and the second semiconductor 4:
the heating and sterilizing temperature of the first semiconductor 3 is set to 100-140 ℃, and the refrigerating temperature of the second semiconductor 4 is set to 20-25 ℃. In this example, the sterilization temperature was 140 ℃ and the refrigeration temperature was 25 ℃. In the personal portable air disinfection method based on the refrigeration semiconductor, the heating part is set to be 100-140 ℃, the refrigeration part is set to be 20-25 ℃, and the high temperature reaches more than 100 ℃, so that germs can be killed sufficiently and the safety of a human body can be ensured. Meanwhile, the air temperature is cooled to 20-25 ℃, so that the air temperature is reduced to be suitable for human body to inhale, and a user feels comfortable.
Step two, after the first temperature sensing instrument 33 and the second temperature sensing instrument 43 determine that the first semiconductor 3 and the second semiconductor 4 reach a set value, the one-way air valve 12 is opened;
step three, opening the air pump 10 and sucking air; the air is preheated by the second heating part 41 and then is input into the first heating part 31 to be heated to the sterilization temperature; then the refrigerant is conveyed to the first refrigerating part 32 for primary cooling, and then conveyed to the second refrigerating part 42 for cooling to the set temperature;
and step four, after the use is finished, closing the air pump 10 and the one-way air valve 12, and disconnecting the current of the first semiconductor 3 and the second semiconductor 4.
In the method of this embodiment, when the cooling and heating portions of the two semiconductors reach the set temperature, the air pump 10 is started to suck and convey air to the second heating portion 41 for preheating, and then the air is introduced into the first heating portion 31 to be heated to the sterilization temperature. Then the air is conveyed to the first refrigerating part 32 for primary cooling, and then conveyed to the second refrigerating part 42 for cooling to the set temperature, and then the air is introduced into the protective clothing for the user to breathe.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (10)
1. A personal portable air disinfection device based on refrigeration semiconductors, comprising a back plate (2), characterized in that: the air pump is characterized by also comprising a second semiconductor (4) and an air pump (10) which are fixed on one side of the back plate (2); the air pump (10) is connected to a second heating part (41) in the second semiconductor (4) through an air conveying pipe (7) and is communicated with the outside through an air inlet pipe (11); the second heating part (41) of the second semiconductor (4) is connected with the heating parts of the plurality of semiconductors and is connected to the second cooling part (42) through the cooling parts of the plurality of semiconductors; the second refrigerating part (42) is connected with the breathing device through an air outlet pipe (9).
2. A refrigerated semiconductor based personal portable air disinfection apparatus as claimed in claim 1, wherein: the second heating part (41) is communicated with the first heating part (31) of the first semiconductor (3) through the heat pipe (5); a first refrigerating part (32) of the first semiconductor (3) is communicated with a second refrigerating part (42) through a cold pipe (6); the first heating part (31) is communicated with the first refrigerating part (32) through a conduit (8).
3. A refrigerated semiconductor based personal portable air disinfection apparatus as claimed in claim 2, wherein: a first temperature sensing instrument (33) is arranged on the first heating part (31); and a second temperature sensing instrument (43) is arranged on the second refrigerating part (42).
4. A refrigerated semiconductor based personal portable air disinfection apparatus as claimed in claim 3, wherein: a plurality of fans (44) are arranged on the outer surface of the second heating part (41).
5. A refrigerated semiconductor based personal portable air disinfection apparatus as claimed in claim 4, wherein: the internal channels of the first heating part (31), the first refrigerating part (32), the second heating part (41) and the second refrigerating part (42) are arranged in a winding way.
6. A refrigerated semiconductor based personal portable air disinfection apparatus as claimed in claim 5, wherein: the inlet of the air inlet pipe (11) is provided with a one-way air valve (12).
7. A refrigerated semiconductor based personal portable air disinfection apparatus as claimed in claim 6, wherein: the first semiconductor (3), the first temperature sensing instrument (33), the second semiconductor (4), the second temperature sensing instrument (43), the fan (44) and the air pump (10) are all electrically connected with the control board (1) and controlled by the control board (1) to act.
8. A refrigerated semiconductor based personal portable air disinfection apparatus as claimed in claim 7, wherein: the other side of the back plate (2) is fixedly provided with a buckle (13).
9. Method for disinfecting air by means of a device according to any one of claims 1-8, characterized in that it comprises the steps of:
step one, setting the heating and cooling temperatures of a first semiconductor (3) and a second semiconductor (4) by using a control board (1);
step two, after the first temperature sensing instrument (33) and the second temperature sensing instrument (43) determine that the first semiconductor (3) and the second semiconductor (4) reach a set value, opening the one-way air valve (12);
step three, turning on the air pump (10) and sucking air; the air is preheated by the second heating part (41) and then is input into the first heating part (31) to be heated to the sterilization temperature; then the refrigerant is conveyed to a first refrigerating part (32) for primary cooling and then conveyed to a second refrigerating part (42) for cooling to a set temperature;
and step four, after the use is finished, closing the air pump (10) and the one-way air valve (12), and disconnecting the current of the first semiconductor (3) and the second semiconductor (4).
10. A method of personal portable refrigeration semiconductor-based air decontamination as claimed in claim 9, wherein: in the first step, the heating and sterilizing temperature of the first semiconductor (3) is set to be 100-140 ℃, and the refrigerating temperature of the second semiconductor (4) is set to be 20-25 ℃.
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| CN202011492686.2A CN112587819A (en) | 2020-12-17 | 2020-12-17 | Personal portable air disinfection device and disinfection method based on refrigeration semiconductor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893837A (en) * | 2022-05-19 | 2022-08-12 | 广州大学 | Air sterilization device based on semiconductor thermoelectric sheet and intelligent control method |
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