CN116163967A - Cold and warm air conditioner - Google Patents

Cold and warm air conditioner Download PDF

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Publication number
CN116163967A
CN116163967A CN202111415824.1A CN202111415824A CN116163967A CN 116163967 A CN116163967 A CN 116163967A CN 202111415824 A CN202111415824 A CN 202111415824A CN 116163967 A CN116163967 A CN 116163967A
Authority
CN
China
Prior art keywords
air outlet
air
baffle
heating
motor
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
Application number
CN202111415824.1A
Other languages
Chinese (zh)
Inventor
庞亚鹏
赖伴来
彭琦
黄鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Lianchuang Electrical Appliance Industry Co ltd
Original Assignee
Shenzhen Lianchuang Electrical Appliance Industry Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Lianchuang Electrical Appliance Industry Co ltd filed Critical Shenzhen Lianchuang Electrical Appliance Industry Co ltd
Priority to CN202111415824.1A priority Critical patent/CN116163967A/en
Publication of CN116163967A publication Critical patent/CN116163967A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/10—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provisions for automatically changing direction of output air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0411—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between for domestic or space-heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

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  • 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)
  • Power Engineering (AREA)
  • Air-Flow Control Members (AREA)

Abstract

The invention relates to a cold and warm air conditioning device, which comprises a machine body component, a pneumatic system and a heating element component, wherein the pneumatic system and the heating element component are arranged in the machine body component; the pneumatic system comprises a fan assembly and a transmission mechanism, wherein the fan assembly comprises a first air outlet which can be communicated with the warm air outlet and a second air outlet which can be communicated with the cold air outlet; the transmission mechanism comprises a first baffle plate for closing the first air outlet and a second baffle plate for closing the second air outlet; the heating body component is arranged between the first air outlet and the warm air outlet; the second baffle opens the second air outlet in a state that the first baffle closes the first air outlet, and the second baffle closes the second air outlet in a state that the first baffle opens the first air outlet. One machine is dual-purpose, can improve the product utilization rate, has reduced consumer's purchase cost.

Description

Cold and warm air conditioner
Technical Field
The invention relates to the technical field of air conditioning, in particular to cooling and heating dual-purpose air conditioning equipment.
Background
The existing warmer is a living environment electric appliance for adjusting the air temperature. With the continuous improvement of the life quality of people, the air temperature of the environment is required to be higher and higher in cold winter, and the warmer is deeply favored by consumers because the warmer can heat and raise the temperature of cold indoor air, and becomes a necessary electrical appliance for families in cold areas or countries.
The principle of the existing hot air type warmer is as follows: an air inlet and an air outlet are arranged on the machine body, a heating element assembly is arranged on the inner side of the air outlet, and a fan is arranged between the heating element assembly and the air inlet. When the heating body is powered on to heat, the fan also works simultaneously, cold air outside the machine body is sucked by the fan from the air inlet and blown to the heating body component, and cold and heat exchange is carried out at the heating body, so that the cold air is changed into hot air and then sent out from the air outlet, and the indoor heating is realized.
The hot air type warmer has a single function, only has a warming function, is only suitable for being used in cold seasons, has shorter use time in one year, and causes waste of product resources.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art and provides the cold and warm air conditioning device which is suitable for both cold seasons and hot seasons, has high utilization rate and reduces the purchase cost of consumers.
The technical scheme adopted for solving the technical problems is as follows:
the cold and hot air conditioning device comprises a machine body component, a pneumatic system and a heating body component, wherein the pneumatic system and the heating body component are arranged in the machine body component, and the machine body component is provided with a cold air outlet and a warm air outlet; the pneumatic system comprises a fan assembly and a transmission mechanism, wherein the fan assembly comprises a first air outlet which can be communicated with the warm air outlet and a second air outlet which can be communicated with the cold air outlet; the transmission mechanism comprises a first baffle plate for closing the first air outlet and a second baffle plate for closing the second air outlet; the heating body component is arranged between the first air outlet and the warm air outlet; the first baffle is in a state of closing the first air outlet, the second baffle is in a state of opening the second air outlet, and the second baffle is in a state of opening the first air outlet.
Further:
the machine body assembly comprises a shell with one opening, a side cover and a top cover, the warm air outlet is arranged on a vertical wall of the shell, and the cold air outlet is arranged on the side cover.
Any one of the other two vertical walls of the shell is provided with an air inlet, or the two vertical walls are provided with air inlets, and the vertical wall provided with the warm air outlet is positioned between the two vertical walls provided with the air inlets.
The fan assembly comprises a main motor, a motor support, a wind wheel and an air channel, wherein the main motor is fixedly arranged on the motor support, the air channel is arranged on the motor support and fixedly connected with the motor support, the wind wheel is fixed on a rotating shaft of the main motor and is arranged in the air channel, air inlets are arranged above and below the air channel, and a first air outlet and a second air outlet are arranged on a vertical wall of the air channel.
The air flue comprises a lower air flue and an upper air flue which are fixedly connected, the lower air flue is provided with a lower air inlet, a first lower air outlet and a second lower air outlet, the upper air flue is provided with an upper air inlet, a first upper air outlet and a second upper air outlet, the first air outlet is formed by the first lower air outlet of the lower air flue and the first upper air outlet of the upper air flue, and the second air outlet is formed by the second lower air outlet of the lower air flue and the second upper air outlet of the upper air flue.
The transmission mechanism further comprises a transmission bracket, a transmission motor, a tooth cover, a main gear, a pinion and a track, wherein a first rack is arranged on the first baffle, and a second rack is arranged on the second baffle; the first baffle and the second baffle are slidably arranged on the transmission support through the passage rail, the main gear is meshed with the second rack, the auxiliary gear is meshed with the first rack, the main gear and the auxiliary gear are meshed and arranged on the transmission support, the tooth cover covers the main gear and the auxiliary gear and is fixedly connected with the transmission support, the transmission motor is fixedly arranged on the tooth cover, and the main gear is fixedly connected with the rotating shaft of the transmission motor.
The transmission support of the transmission mechanism is fixedly connected with the upper end of the air duct, the first baffle 227 is positioned in the direction of the first air outlet, and the second baffle is positioned in the direction of the second air outlet.
The fan comprises a fan assembly, and is characterized by further comprising a swinging head assembly which is arranged at the lower end of the fan assembly.
The swinging head assembly comprises a swinging head motor, a connecting cover, a swinging head support, a swinging head seat, a crank, a connecting rod and a bottom cover; the swing seat is fixedly connected with the connecting cover through the rotating hole of the swing seat, the swing seat is rotatably arranged between the swing seat and the connecting cover, a rotating shaft of the swing motor penetrates through the swing seat to be connected with the crank, one end of the connecting rod is rotatably connected with the crank, the other end of the connecting rod is rotatably connected with the swing seat, the bottom cover is fixedly arranged with the swing seat, and the swing seat is fixedly connected with the motor support of the machine body component or the fan component.
The heating body component comprises a heating body bracket and a heating body fixed in the heating body bracket.
Compared with the prior art, the invention has the following beneficial effects:
the warm air outlet and the cold air outlet are ingeniously formed in the fan assembly, one air outlet is opened, the other air outlet is closed through the transmission mechanism, the warm air outlet is used in cold winter, the cold air outlet is used in hot summer, the utilization rate of products can be improved, the product resources are saved, the principle is simple, and the application is wider. One machine is two-purpose, and reduces the purchase cost of consumers.
Drawings
FIG. 1 is an exploded isometric view of an embodiment of a cooling and heating air conditioning unit according to the present invention;
FIG. 2 is a schematic exploded isometric view of a pneumatic system of an embodiment of the air conditioning apparatus of the present invention;
FIG. 3 is a schematic view showing a state in which a gear and a rack of an embodiment of the cooling and heating air-conditioning apparatus of the present invention are engaged;
FIG. 4 is a schematic diagram showing a state where a cool air outlet of an embodiment of the cool and warm air conditioner of the present invention is opened;
fig. 5 is a schematic view showing a state in which a warm air outlet of an embodiment of the cooling and heating air conditioning apparatus according to the present invention is opened.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, a cooling and heating air conditioning apparatus includes a body assembly 1, a pneumatic system 2, a swing head assembly 3, a heating element assembly 4, and the like. The fuselage assembly 1 in turn comprises a shell 11, side covers 12 and a top cover 13. The shell 11 is provided with a first air inlet 111 or/and a second air inlet 112, a warm air outlet 113 and other structural characteristics. The side cover 12 is provided with a cold air outlet 121. The pneumatic system 2 comprises a fan assembly 21, a transmission mechanism 22 and the like.
As shown in fig. 2, the fan assembly 21 includes a main motor 211, a motor bracket 212, a lower wind channel 213, a wind wheel 214, and an upper wind channel 215. The lower duct 213 is provided with a lower air inlet 2131, a first lower air outlet 2132 and a second lower air outlet 2133. The upper duct 215 is provided with an upper air inlet 2151, a first upper air outlet 2152 and a second upper air outlet 2153. The fan assembly is specifically connected as follows: the main motor 211 is fixedly arranged on the motor bracket 212, the lower air duct 213 is arranged on the motor bracket 212 and fixedly connected with the motor bracket 212, the wind wheel 214 is fixed on the main motor rotating shaft, the upper air duct 215 is fixedly connected with the lower air duct 213, and the wind wheel 214 is arranged between the upper air duct and the lower air duct. The first lower air outlet 2132 of the lower air duct 213 and the first upper air outlet 2152 of the upper air duct 215 form an air duct first air outlet a, and the second lower air outlet 2133 of the lower air duct and the second upper air outlet 2153 of the upper air duct form an air duct second air outlet B.
As shown in fig. 2, the transmission mechanism 22 includes a transmission bracket 221, a transmission motor 222, a tooth cover 223, a main gear 224, a sub gear 25, a track 226, a first gear 227, and a second gear 228. The first baffle 227 is provided with a first rack 2271, and the second baffle 228 is provided with a second rack 2281. As shown in fig. 2 and 3, the first and second shutters 227 and 228 are slidably disposed on the transmission bracket 221 through the rail 226. The main gear 224 is meshed with the second rack 2281, the auxiliary gear 25 is meshed with the first rack 2271, the main gear and the auxiliary gear are meshed and are arranged on the transmission bracket 221, the tooth cover 223 limits the main gear and the auxiliary gear and is fixedly connected with the transmission bracket 221, the transmission motor 222 is fixedly arranged on the tooth cover 223, and the main gear 224 is fixedly connected with the rotating shaft of the transmission motor 222.
As shown in fig. 2, the transmission bracket 221 of the transmission mechanism 22 is fixedly connected with the upper end of the upper air duct 215, so that the first baffle 227 is located in the direction of the first air outlet a, and the second baffle 228 is located in the direction of the second air outlet B, thereby forming a pneumatic system.
As shown in fig. 1, the swing assembly 3 includes a swing motor 31, a connection cover 32, a swing bracket 33, a swing seat 34, a crank 35, a link 36, and a bottom cover 37. The swing bracket 33 is provided with a rotation hole 331. The swing seat 34 is fixedly connected with the connecting cover 32 through a rotating hole of the swing head support 33, the swing head support 33 is rotatably arranged between the swing head seat 34 and the connecting cover 32, the swing head motor 31 is fixedly arranged on the swing head support 33, a rotating shaft of the swing head motor 31 penetrates through the swing head support 33 to be connected with the crank 35, one end of the connecting rod 36 is rotatably connected with the crank 35, the other end of the connecting rod is rotatably connected with the swing head seat 34, and the bottom cover 37 is fixedly arranged with the swing head seat 34.
As shown in fig. 1, the heat generating body assembly 4 includes a heat generating body holder 41 and a heat generating body 42. The heating element 42 is fixedly installed in the heating element bracket 41 to form a heating element assembly.
As shown in fig. 1, the heating element assembly 4 is fixedly disposed inside the warm air outlet 113 of the housing 11. The pneumatic system 2 is fixedly installed inside the shell 11, the air duct second air outlet B is correspondingly arranged with the cold air outlet of the side cover, the air duct first air outlet A is correspondingly arranged with the heating element assembly 4 inside the shell warm air outlet 113, the heating element assembly 4 is arranged between the warm air outlet and the first air outlet A, and the top cover is covered. The swing assembly 3 is disposed at the lower end of the housing 11, and the swing bracket 33 is fixedly connected with the housing 11 or the motor bracket 212.
As shown in fig. 4, when the fan is required, the main motor 211 works to drive the wind wheel 214 to rotate at a high speed, so that negative pressure is generated inside the machine body, air outside the machine body is driven to be sucked in from the first air inlet 111 or the second air inlet 112, the transmission motor 222 drives the first baffle 227 to translate to close the first air outlet a, and drives the second baffle 228 to translate to open the second air outlet B, and air is driven by the wind wheel 214 to blow out from the air duct second air outlet B and the cold air outlet 121 through the air inlets of the upper air duct and the lower air duct.
As shown in fig. 5, when the warmer needs to be used, the main motor 211 works to drive the wind wheel 214 to rotate at a high speed, so that negative pressure is generated inside the warmer body, cold air outside the warmer body is driven to be sucked from the first air inlet 111 or the second air inlet 112, the driving motor 222 drives the first baffle 227 to translate to open the first air outlet a, and drives the second baffle 228 to translate to close the second air outlet B, air is driven by the wind wheel 214 from the air inlet of the upper air channel and the air inlet of the lower air channel to be blown to the heater assembly 4 from the air channel first air outlet a, at this time, the heater works to heat, and cold air is subjected to cold-heat exchange at the heater body, so that the cold air is changed into hot air and then blown out from the warm air outlet 113.
It should be understood that the foregoing embodiments are merely illustrative of the technical solutions of the present invention, and not limiting thereof, and that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art; such modifications and substitutions are intended to fall within the scope of the appended claims.

Claims (10)

1. The utility model provides a changes in temperature air conditioning device, includes fuselage subassembly and sets up pneumatic system and heat-generating body subassembly in fuselage subassembly inside, its characterized in that: the machine body component is provided with a cold air outlet and a warm air outlet; the pneumatic system comprises a fan assembly and a transmission mechanism, wherein the fan assembly comprises a first air outlet which can be communicated with the warm air outlet and a second air outlet which can be communicated with the cold air outlet; the transmission mechanism comprises a first baffle plate for closing the first air outlet and a second baffle plate for closing the second air outlet; the heating body component is arranged between the first air outlet and the warm air outlet; the first baffle is in a state of closing the first air outlet, the second baffle is in a state of opening the second air outlet, and the second baffle is in a state of opening the first air outlet.
2. The cooling and heating air conditioning apparatus according to claim 1, wherein: the machine body assembly comprises a shell with one opening, a side cover and a top cover, the warm air outlet is arranged on a vertical wall of the shell, and the cold air outlet is arranged on the side cover.
3. The cooling and heating air conditioning apparatus according to claim 2, wherein: any one of the other two vertical walls of the shell is provided with an air inlet, or the two vertical walls are provided with air inlets, and the vertical wall provided with the warm air outlet is positioned between the two vertical walls provided with the air inlets.
4. The cooling and heating air conditioning apparatus according to claim 1, wherein: the fan assembly comprises a main motor, a motor support, a wind wheel and an air channel, wherein the main motor is fixedly arranged on the motor support, the air channel is arranged on the motor support and fixedly connected with the motor support, the wind wheel is fixed on a rotating shaft of the main motor and is arranged in the air channel, air inlets are arranged above and below the air channel, and a first air outlet and a second air outlet are arranged on a vertical wall of the air channel.
5. The cooling and heating air conditioning apparatus according to claim 4, wherein: the air flue comprises a lower air flue and an upper air flue which are fixedly connected, the lower air flue is provided with a lower air inlet, a first lower air outlet and a second lower air outlet, the upper air flue is provided with an upper air inlet, a first upper air outlet and a second upper air outlet, the first air outlet is formed by the first lower air outlet of the lower air flue and the first upper air outlet of the upper air flue, and the second air outlet is formed by the second lower air outlet of the lower air flue and the second upper air outlet of the upper air flue.
6. The cooling and heating air conditioning apparatus according to claim 1, wherein: the transmission mechanism further comprises a transmission bracket, a transmission motor, a tooth cover, a main gear, a pinion and a track, wherein a first rack is arranged on the first baffle, and a second rack is arranged on the second baffle; the first baffle and the second baffle are slidably arranged on the transmission support through the passage rail, the main gear is meshed with the second rack, the auxiliary gear is meshed with the first rack, the main gear and the auxiliary gear are meshed and arranged on the transmission support, the tooth cover covers the main gear and the auxiliary gear and is fixedly connected with the transmission support, the transmission motor is fixedly arranged on the tooth cover, and the main gear is fixedly connected with the rotating shaft of the transmission motor.
7. The cooling and heating air conditioning apparatus according to claim 6, wherein: the transmission support of the transmission mechanism is fixedly connected with the upper end of the air duct, the first baffle plate is positioned in the direction of the first air outlet, and the second baffle plate is positioned in the direction of the second air outlet.
8. The cooling and heating air conditioning apparatus according to claim 1, wherein: the fan comprises a fan assembly, and is characterized by further comprising a swinging head assembly which is arranged at the lower end of the fan assembly.
9. The cooling and heating air conditioning apparatus according to claim 8, wherein: the swinging head assembly comprises a swinging head motor, a connecting cover, a swinging head support, a swinging head seat, a crank, a connecting rod and a bottom cover; the swing seat is fixedly connected with the connecting cover through the rotating hole of the swing seat, the swing seat is rotatably arranged between the swing seat and the connecting cover, a rotating shaft of the swing motor penetrates through the swing seat to be connected with the crank, one end of the connecting rod is rotatably connected with the crank, the other end of the connecting rod is rotatably connected with the swing seat, the bottom cover is fixedly arranged with the swing seat, and the swing seat is fixedly connected with the motor support of the machine body component or the fan component.
10. The cooling and heating air conditioning apparatus according to claim 1, wherein: the heating body component comprises a heating body bracket and a heating body fixed in the heating body bracket.
CN202111415824.1A 2021-11-25 2021-11-25 Cold and warm air conditioner Pending CN116163967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111415824.1A CN116163967A (en) 2021-11-25 2021-11-25 Cold and warm air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111415824.1A CN116163967A (en) 2021-11-25 2021-11-25 Cold and warm air conditioner

Publications (1)

Publication Number Publication Date
CN116163967A true CN116163967A (en) 2023-05-26

Family

ID=86416965

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111415824.1A Pending CN116163967A (en) 2021-11-25 2021-11-25 Cold and warm air conditioner

Country Status (1)

Country Link
CN (1) CN116163967A (en)

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