CN217357475U - Air guide plate assembly for indoor unit of air conditioner and indoor unit of air conditioner - Google Patents

Air guide plate assembly for indoor unit of air conditioner and indoor unit of air conditioner Download PDF

Info

Publication number
CN217357475U
CN217357475U CN202220188529.0U CN202220188529U CN217357475U CN 217357475 U CN217357475 U CN 217357475U CN 202220188529 U CN202220188529 U CN 202220188529U CN 217357475 U CN217357475 U CN 217357475U
Authority
CN
China
Prior art keywords
air
transmission rod
mounting
transmission mechanism
air deflector
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.)
Active
Application number
CN202220188529.0U
Other languages
Chinese (zh)
Inventor
韦存超
张雄菲
刘猛
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.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home 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 Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202220188529.0U priority Critical patent/CN217357475U/en
Application granted granted Critical
Publication of CN217357475U publication Critical patent/CN217357475U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Air-Flow Control Members (AREA)

Abstract

The utility model provides an air deflection assembly and air conditioning indoor unit for air conditioning indoor unit. The air deflector assembly comprises an air deflector and an air deflector extending rotating assembly, and the air deflector extending rotating assembly comprises a transmission rod, an installation frame, a first transmission mechanism and a second transmission mechanism. The transmission rod is rotatably arranged. The mounting frame is movably arranged along the axial direction of the transmission rod, and the air deflector is rotatably arranged on the mounting frame. The first transmission mechanism is arranged between the mounting frame and the transmission rod, so that the transmission rod drives the mounting frame to move along the axis of the transmission rod through the first transmission mechanism when rotating. The second transmission mechanism is arranged between the mounting frame and the air deflector, so that the transmission rod drives the air deflector to rotate through the second transmission mechanism when rotating and/or moving relative to the mounting frame. When the indoor unit of the air conditioner heats, the air deflector extends out and is adjusted to a proper angle, so that warm air is blown to the lower part of a room preferentially, and then hot air rises to achieve the effect of quick heating.

Description

Air guide plate assembly for air conditioner indoor unit and air conditioner indoor unit
Technical Field
The utility model relates to an air conditioning technology field especially relates to an air deflection assembly and air conditioning indoor unit for air conditioning indoor unit.
Background
When a commercial hot air on-hook air conditioner runs, the opening angle of the air deflector is basically horizontal or at a position slightly below the horizontal, the temperature of the indoor upper part is firstly increased due to the high suspension height of the air conditioner on-hook, then the temperature is gradually increased by downward heat exchange, and the hot air is increased upwards due to the high temperature of the hot air, the heated volume of the air is expanded, the air density is low, the weight is light, and therefore the hot air is increased upwards. The temperature of the cold air is low, the heated volume of the air is contracted, the air density is high, and the weight is heavy, so that the cold air flows downwards. Therefore, the heat exchange efficiency of the warm air on-hook air conditioner is low, and the temperature of a room cannot be quickly raised.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made to provide an air deflection assembly for an air conditioner indoor unit and an air conditioner indoor unit that overcome or at least partially solve the above problems.
Specifically, the utility model provides an aviation baffle subassembly for air conditioner, stretch out the runner assembly including aviation baffle and aviation baffle, the aviation baffle stretches out the runner assembly and includes:
the transmission rod is rotatably arranged;
the mounting rack is movably arranged along the axial direction of the transmission rod, and the air deflector is rotatably arranged on the mounting rack;
the first transmission mechanism is arranged between the mounting frame and the transmission rod, so that the transmission rod drives the mounting frame to move along the axis of the transmission rod through the first transmission mechanism when rotating;
the second transmission mechanism is arranged between the mounting rack and the air deflector, so that the transmission rod drives the air deflector to rotate through the second transmission mechanism when rotating and/or moving relative to the mounting rack.
Optionally, the mounting frame is provided with a through hole;
the first transmission mechanism comprises an internal thread arranged on the hole wall of the through hole and an external thread arranged on the transmission rod, the transmission rod penetrates through the through hole, and the external thread is meshed with the internal thread.
Optionally, the second transmission mechanism includes a gear transmission mechanism and an external thread disposed on the transmission rod, and the external thread drives the air deflector to rotate through the gear transmission mechanism.
Optionally, the gear transmission mechanism comprises:
a first gear rotatably mounted to the mounting bracket and cooperating with the external thread to rotate the first gear;
and the second gear is arranged on the air deflector and is meshed with the first gear.
Optionally, the mounting frame comprises a mounting box, and the transmission rod is inserted into the mounting box; the second transmission mechanism is arranged in the mounting box.
Optionally, the mounting frame further comprises sliding plates arranged on two sides of the mounting box, each sliding plate is provided with a sliding groove extending along a direction parallel to the length direction of the transmission rod, and the sliding grooves are used for inserting guide columns or guide blocks.
Optionally, a mounting hole is formed in the mounting box, a mounting cylinder is coaxially arranged at the mounting hole, the transmission rod penetrates through the mounting cylinder, and the first transmission mechanism is arranged between the mounting cylinder and the transmission rod.
Optionally, the air deflector extending out of the rotating assembly further comprises a motor,
one end of the transmission rod is connected to an output shaft of the motor.
Optionally, the number of the air guide plates extending out of the rotating assembly is two, and the two air guide plates are respectively arranged at two ends of the air guide plate.
The utility model also provides an air conditioner indoor unit, which comprises a shell, wherein the shell is provided with an air outlet and also comprises the air deflector component;
the mounting rack is movably arranged in the shell along the axial direction of the transmission rod, so that the air deflector extends out of the air outlet or retracts to close the air outlet.
The utility model provides an air deflector subassembly and air conditioning indoor set stretches out the runner assembly through the aviation baffle and stretches out the aviation baffle and adjust the aviation baffle to suitable angle simultaneously to make the air conditioning indoor set when heating, blow the room lower part with the warm braw priority, then the hot-air rises, reaches the effect of heating fast. Similarly, the rotation angle and the direction of the air deflector can be set according to requirements, so that when the air conditioner indoor unit is used for refrigerating, the air deflector extends out and rotates to a corresponding position at the same time, and the refrigerating and air guiding requirements are met.
Further, the utility model provides an air deflection assembly's equal simple structure of first drive mechanism and second drive mechanism, nevertheless convenient and practical.
Further, the utility model provides an air deflection assembly's aviation baffle stretches out runner assembly and is two, set up respectively in the both ends of aviation baffle, and two aviation baffles stretch out runner assembly synchronous operation, can keep the balance when aviation baffle moves better.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily to scale. In the drawings:
fig. 1 is a schematic structural view of an air deflector assembly for an air conditioner indoor unit according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an air deflector assembly for an air conditioner indoor unit according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an air deflection assembly for an air conditioner indoor unit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an operating state of an air deflection assembly according to an embodiment of the present invention.
Detailed Description
The air deflector assembly for an air conditioner indoor unit and an air conditioner indoor unit according to embodiments of the present invention are described below with reference to fig. 1 to 4. In the description of the present embodiments, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature, i.e., one or more such features. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. When a feature "comprises or comprises" a or some of its intended features, this indicates that other features are not excluded and that other features may be further included, unless expressly stated otherwise.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and "coupled" and the like are to be construed broadly and can, for example, be fixedly connected or detachably connected or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. Those skilled in the art should understand the specific meaning of the above terms in the present invention according to specific situations.
Further, in the description of the present embodiment, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature therebetween. That is, in the description of the present embodiment, the first feature being "on," "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature "under," "beneath," or "beneath" a second feature may be directly under or obliquely under the first feature, or simply mean that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiments, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Fig. 1 is a schematic structural diagram of an air deflection assembly for an air conditioner indoor unit according to an embodiment of the present invention, as shown in fig. 1 and referring to fig. 2 to 4, the present invention provides an air deflection assembly for an air conditioner indoor unit, which includes an air deflection plate 10 and an air deflection plate extending out of a rotation assembly, the air deflection plate extending out of the rotation assembly includes a transmission rod 20, a mounting frame 30, a first transmission mechanism and a second transmission mechanism 50. The transmission rod 20 is rotatably arranged. The mounting bracket 30 is movably disposed along the axial direction of the transmission rod 20, and the air deflector 10 is rotatably mounted on the mounting bracket 30. The first transmission mechanism is disposed between the mounting bracket 30 and the transmission rod 20, so that the transmission rod 20 drives the mounting bracket 30 to move along the axis of the transmission rod 20 through the first transmission mechanism when rotating. The second transmission mechanism 50 is disposed between the mounting bracket 30 and the air deflector 10, so that the transmission rod 20 drives the air deflector 10 to rotate through the second transmission mechanism 50 when rotating and/or moving relative to the mounting bracket 30.
When the indoor unit of the air conditioner starts to heat, the transmission rod 20 starts to rotate, the first transmission mechanism starts to act, the mounting frame 30 and the air deflector 10 are pushed to extend out of the air outlet of the air conditioner, and then the second transmission mechanism 50 drives the air deflector 10 to rotate, so that the lower end of the air deflector 10 rotates to the front lower part of the upper end. Therefore, the warm air is blown to the lower part of the room preferentially, and then the hot air rises, so that the effect of quick heating is achieved. Similarly, the rotation angle and direction of the air deflector 10 can be set according to the requirement, so that when the indoor unit of the air conditioner is refrigerating, the air deflector extends out and rotates to the corresponding position at the same time, and the refrigerating and air guiding requirements are met.
In some embodiments of the present invention, the mounting frame 30 is provided with perforations. The first transmission mechanism comprises an internal thread arranged on the wall of the through hole and an external thread 21 arranged on the transmission rod 20, the transmission rod 20 penetrates through the through hole, and the external thread 21 is meshed with the internal thread.
In some embodiments of the present invention, the mounting frame 30 includes a mounting box 31, and the transmission rod 20 is inserted into the mounting box 31. The mounting box 31 is provided with a mounting hole, and a mounting cylinder 41 is coaxially arranged at the mounting hole. The transmission rod 20 penetrates through the mounting barrel 41, and the first transmission mechanism is arranged between the mounting barrel 41 and the transmission rod 20. In this embodiment, when the first transmission mechanism includes the internal thread and the external thread 21, the mounting tube 41, i.e., the through hole, i.e., the mounting tube 41 constitutes a screw hole, and the transmission rod is a screw.
In order to facilitate the movement of the mounting frame, the mounting frame 30 further includes sliding plates 32 disposed at both sides of the mounting box 31, and each sliding plate 32 is provided with a sliding groove extending in a direction parallel to the length direction of the transmission rod 20, and the sliding groove is used for inserting a guide post or a guide block.
When the transmission rod 20 rotates, the internal thread is meshed with the external thread 21 on the transmission rod 20, the mounting frame 30 tends to rotate along with the transmission rod 20, but under the rotation stopping effect of other structures of the air conditioning indoor unit, the rotation of the mounting frame 30 is converted into movement guided by the sliding groove and the guide post or the guide block, that is, the mounting frame 30 moves along the axial direction of the transmission rod 20 and drives the air deflector 10 to extend out of the air outlet of the air conditioning indoor unit.
In some embodiments of the present invention, the second transmission mechanism 50 includes a gear transmission mechanism and an external thread 21 disposed on the transmission rod 20, and the external thread 21 drives the air deflector 10 to rotate through the gear transmission mechanism. The second transmission mechanism 50 is disposed in the mounting box 31. The gear transmission mechanism includes a first gear 51 and a second gear 52. The first gear 51 is rotatably mounted to the mounting bracket 30, and the first gear 51 is engaged with the external thread 21 to rotate the first gear 51. The second gear 52 is mounted on the air deflector 10 and is engaged with the first gear 51. The second gear 52 is disposed at the end of the mounting shaft to the air deflector 10.
When the indoor unit of the air conditioner starts to heat, the transmission rod 20 rotates and drives the first gear 51 to rotate, the second gear 52 rotates under the driving of the first gear 51, then the second gear 52 drives the air deflector 10 to rotate, so that the lower end of the air deflector 10 rotates to the front lower part of the upper end of the air deflector, that is, the air deflector 10 is adjusted to a proper angle, so that warm air is blown to the lower part of a room preferentially, and then the hot air rises, thereby achieving the effect of quick heating.
In some embodiments of the present invention, the air deflector extending out of the rotating assembly further comprises a motor 60, and one end of the transmission rod 20 is connected to an output shaft of the motor 60. When the motor 60 drives the transmission rod 20 to rotate forward, the mounting frame 30 and the air deflector 10 are driven to move downwards; when the motor 60 drives the transmission rod 20 to rotate reversely, the mounting frame 30 and the air deflector 10 are driven to reset. Further, the transmission rod 20 is inserted into the insertion hole of the output shaft of the motor 60 and is in interference connection, or the output shaft of the motor 60 is inserted into the insertion hole of the transmission rod 20 and is in interference connection, so that the transmission rod and the transmission rod do not generate relative displacement during operation and keep synchronous rotation. Preferably, the motor 60 is a stepper motor.
The stepping motor is used for driving, the position of the air deflector 10 can be more accurately positioned due to high precision and small error value of the stepping motor, and the control performance of the stepping motor is good, so that the starting, stopping and moving speed of the air deflector 10 can be timely controlled.
In some embodiments of the present invention, the number of the air guiding plates extending out of the rotating assembly is two, and the two air guiding plates are respectively disposed at two ends of the air guiding plate 10.
The two air guide plates extend out of the rotating assemblies and are respectively arranged at two ends of the air guide plate 10, and the two air guide plates extend out of the rotating assemblies and synchronously operate, so that the balance of the air guide plate 10 can be better kept when the air guide plate 10 operates.
The utility model also provides an air conditioner, including casing and the aviation baffle subassembly in above-mentioned arbitrary embodiment, the casing has the air outlet. The mounting bracket 30 is movably disposed in the casing along the axial direction of the transmission rod 20, so that the air deflector 10 extends out of the air outlet or retracts into the air outlet.
As shown in fig. 4, the utility model provides an indoor set of air conditioner, when the indoor set of air conditioner heats, stretch out rotating assembly through the aviation baffle and adjust aviation baffle 10 to suitable angle to preferentially blow the room lower part with the warm braw, then the hot-air rises, reaches the effect of heating fast.
In some embodiments of the present invention, a sliding plate moving plane is disposed on the framework of the indoor unit of the air conditioner, and the sliding plate 32 of the mounting frame is attached to the sliding plate moving plane. The sliding plate moving plane is provided with a guide post or a guide block, and the guide post or the guide block is inserted into a sliding groove on the sliding plate 32, so that the mounting frame and the air deflector can slide out stably. The body of the motor can be fixedly arranged on the framework. The transmission rod is fixedly connected with the output shaft of the motor, so that the transmission rod can not be arranged on the framework. Of course, the transmission rod may also be rotatably mounted to the frame via bearings or the like so as to rotate only relative to the frame.
In some embodiments of the present invention, the air conditioning indoor unit is preferably a wall-mounted air conditioning indoor unit. Of course, when the air conditioning indoor unit is a cabinet or other type of indoor unit, the air deflector assembly in any of the above embodiments may be provided. Similarly, when the air deflector needs to be extended and rotated simultaneously for air outlet, the indoor unit of the air conditioner may also have the air deflector assembly in any of the above embodiments. For example for cooling wind requirements, but also for example for blowing air to certain special locations, etc.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. The utility model provides an aviation baffle subassembly for air conditioner indoor unit, includes the aviation baffle, its characterized in that still includes that the aviation baffle stretches out the rotating assembly, the aviation baffle stretches out the rotating assembly and includes:
the transmission rod is rotatably arranged;
the mounting rack is movably arranged along the axial direction of the transmission rod, and the air deflector is rotatably arranged on the mounting rack;
the first transmission mechanism is arranged between the mounting frame and the transmission rod, so that the transmission rod drives the mounting frame to move along the axis of the transmission rod through the first transmission mechanism when rotating;
the second transmission mechanism is arranged between the mounting rack and the air deflector, so that the transmission rod drives the air deflector to rotate through the second transmission mechanism when rotating and/or moving relative to the mounting rack.
2. The air deflection assembly of claim 1,
the mounting rack is provided with a through hole;
the first transmission mechanism comprises an internal thread arranged on the hole wall of the through hole and an external thread arranged on the transmission rod, the transmission rod penetrates through the through hole, and the external thread is meshed with the internal thread.
3. The air deflection assembly of claim 1,
the second transmission mechanism comprises a gear transmission mechanism and an external thread arranged on the transmission rod, and the external thread drives the air deflector to rotate through the gear transmission mechanism.
4. The air deflection assembly of claim 3, wherein the gear assembly comprises:
a first gear rotatably mounted to the mounting bracket and cooperating with the external thread to rotate the first gear;
and the second gear is arranged on the air deflector and is meshed with the first gear.
5. The air deflection assembly of claim 1,
the mounting rack comprises a mounting box, and the transmission rod is inserted into the mounting box; the second transmission mechanism is arranged in the mounting box.
6. The air deflection assembly of claim 5,
the mounting bracket still including set up in the slide of mounting box both sides, every be provided with on the slide along being on a parallel with the spout that the length direction of transmission lever extends, the spout is used for guide post or guide block to insert.
7. The air deflection assembly of claim 5,
the mounting box is provided with a mounting hole, a mounting cylinder is coaxially arranged at the mounting hole, the transmission rod penetrates through the mounting cylinder, and the first transmission mechanism is arranged between the mounting cylinder and the transmission rod.
8. The air deflection assembly of claim 1,
the air deflector extending out of the rotating assembly further comprises a motor,
one end of the transmission rod is connected to an output shaft of the motor.
9. The air deflection assembly of claim 1,
the number of the air guide plates extending out of the rotating assemblies is two, the two air guide plates are respectively arranged at two ends of the air guide plates, and the two air guide plates extend out of the rotating assemblies to synchronously operate.
10. An indoor unit of an air conditioner, comprising a shell, wherein the shell is provided with an air outlet, and the indoor unit of the air conditioner is characterized by further comprising an air deflector assembly as claimed in any one of claims 1 to 9;
the mounting frame is movably arranged in the shell along the axial direction of the transmission rod, so that the air deflector extends out of the air outlet or retracts back to close the air outlet.
CN202220188529.0U 2022-01-24 2022-01-24 Air guide plate assembly for indoor unit of air conditioner and indoor unit of air conditioner Active CN217357475U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220188529.0U CN217357475U (en) 2022-01-24 2022-01-24 Air guide plate assembly for indoor unit of air conditioner and indoor unit of air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220188529.0U CN217357475U (en) 2022-01-24 2022-01-24 Air guide plate assembly for indoor unit of air conditioner and indoor unit of air conditioner

Publications (1)

Publication Number Publication Date
CN217357475U true CN217357475U (en) 2022-09-02

Family

ID=83044049

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220188529.0U Active CN217357475U (en) 2022-01-24 2022-01-24 Air guide plate assembly for indoor unit of air conditioner and indoor unit of air conditioner

Country Status (1)

Country Link
CN (1) CN217357475U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115899839A (en) * 2022-11-29 2023-04-04 青岛海尔空调器有限总公司 Indoor unit of air conditioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115899839A (en) * 2022-11-29 2023-04-04 青岛海尔空调器有限总公司 Indoor unit of air conditioner
WO2024113989A1 (en) * 2022-11-29 2024-06-06 青岛海尔空调器有限总公司 Air conditioner indoor unit

Similar Documents

Publication Publication Date Title
CN217357475U (en) Air guide plate assembly for indoor unit of air conditioner and indoor unit of air conditioner
CN106152459B (en) Cabinet air conditioner and air outlet control method of cabinet air conditioner
WO2021051895A1 (en) Indoor unit, air conditioner, and air conditioner control method
CN106247454B (en) Cabinet air conditioner and air outlet control method of cabinet air conditioner
CN210861360U (en) Air conditioner
CN215523708U (en) Air conditioner control mechanism and indoor unit
CN111442376B (en) Ceiling type air conditioner indoor unit
CN208936493U (en) Air conditioner
CN220038724U (en) Air deflector driving device and air conditioner indoor unit
CN110017540B (en) Air conditioner indoor unit and air conditioner
CN218096239U (en) Air conditioner air deflector assembly and air conditioner
CN217035767U (en) Device capable of automatically adjusting air outlet direction and energy storage power supply
CN217817074U (en) Air conditioner
CN106247455B (en) The air-out control method of cabinet air-conditioner and cabinet air-conditioner
CN221526849U (en) Shutter type wind control device
CN213146755U (en) Indoor air conditioner
CN219995531U (en) Air quantity adjusting mechanism, top outlet device and central air conditioner
CN210601959U (en) Floor type air conditioner indoor unit and air conditioner
CN220871257U (en) Automatic regulating device of refrigerating system
CN217357476U (en) Wall-mounted air conditioner indoor unit
CN217685315U (en) Machine and air conditioner in air conditioning
CN114198969B (en) Air door assembly, air duct assembly and refrigeration equipment
CN221301472U (en) Air conditioner outdoor unit and air conditioner
CN216114809U (en) Refrigerating system thermal expansion valve spool with opening degree adjusting function
CN116659045B (en) Central air conditioning intelligent management and control system based on thing networking

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant