CN219120735U - Bidirectional variable flow device of air conditioning system - Google Patents
Bidirectional variable flow device of air conditioning system Download PDFInfo
- Publication number
- CN219120735U CN219120735U CN202223311832.4U CN202223311832U CN219120735U CN 219120735 U CN219120735 U CN 219120735U CN 202223311832 U CN202223311832 U CN 202223311832U CN 219120735 U CN219120735 U CN 219120735U
- Authority
- CN
- China
- Prior art keywords
- bidirectional
- gear
- flow
- variable
- air conditioning
- 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
Links
Images
Classifications
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Air-Flow Control Members (AREA)
Abstract
The utility model discloses a bidirectional variable flow device of an air conditioning system, which relates to the related field of variable flow devices of the air conditioning system, and comprises a distribution valve, wherein the left end of the bidirectional component is connected with the right end of the distribution valve through a pipeline; the bidirectional component operates to bidirectionally guide the distributing valve, the variable component is arranged at the right end of the bidirectional component, and when liquid is extruded into the distributing valve, the liquid indirectly turns the fan-shaped piece left in the inner hole of the variable pipe and opens the fan-shaped piece, so that the flow cross-section area is obviously increased, the resistance of the liquid flow process is reduced by increasing the flow cross-section area of the liquid, the pressure loss of the liquid is reduced, the flash gas generated by the refrigerant caused by overlarge pressure loss of the outlet of the distributor is avoided, the refrigerating capacity is influenced, and meanwhile, the opening of the expansion valve is overlarge, so that the service life of the expansion valve is prolonged.
Description
Technical Field
The utility model relates to the field of air conditioning system variable flow devices, in particular to a bidirectional variable flow device of an air conditioning system.
Background
An air conditioning system is a system that artificially treats the temperature, humidity, cleanliness and air flow rate of indoor air; can make certain places obtain air with certain temperature, humidity and air quality so as to meet the requirements of users and production processes and improve the labor sanitation and indoor climate conditions.
For example, chinese patent publication No. CN206145898U discloses a variable flow control device of an air conditioner and an air conditioning system, which belong to the technical field of air conditioning systems and are designed to solve the problems of high power consumption, high reconstruction cost and the like of the existing devices; the variable flow control device of the air conditioner is characterized in that a valve group and a pump group are connected in series on a chilled water pipeline; the valve group comprises at least one regulating valve and at least one electric valve, and all the regulating valves are connected in parallel with the electric valve; the pump group comprises at least two water pumps, and all the water pumps are connected in parallel.
In the above patent, as shown in fig. 1, in the prior art, two sets of flow pipes are generally arranged, and a component for bidirectional flow is absent, so that the overall volume of the air conditioning system is larger, and the working efficiency of the air conditioning system is reduced; in the prior art, when reverse refrigeration is performed, the pressure loss of the outlet of the distributor is too large, the refrigerant can generate flash gas to influence the refrigerating capacity, and the opening of the expansion valve is too large, so that the service life of the expansion valve is reduced.
Disclosure of Invention
Accordingly, in order to address the above-described deficiencies, the present utility model provides a bi-directional variable flow device for an air conditioning system.
The utility model is embodied in a bi-directional variable flow device for an air conditioning system, the device comprising a distribution valve;
characterized by further comprising:
the left end of the bidirectional component is connected with the right end pipeline of the distributing valve; wherein the bidirectional component operates to bidirectionally guide the distribution valve; the left end of the variable component is connected with the right end of the bidirectional component through a pipeline; the variable component can control the flow of bidirectional diversion during operation;
the bi-directional assembly includes:
the mounting bottom plate is arranged at the bottom side of the right end of the distribution valve;
the motor is fixed at the rear part of the top end of the mounting bottom plate through a motor bolt;
the rear end of the bidirectional flow guide box is rotationally connected with the motor output shaft;
a left flow port, wherein a pipeline at the right end of the left flow port is connected with a bidirectional diversion box;
the left end of the right flow port is connected with the right end pipeline of the bidirectional diversion box;
the flow guiding cavity is arranged in the bidirectional flow guiding box;
the rear end of the first gear is rotationally connected with the top of the rear end in the diversion cavity;
the top end of the second gear is meshed with the insection at the bottom end of the first gear;
wherein, the left flow port and the right flow port have the same structure.
Preferably, the variable component includes:
the left end of the variable tube is connected with the right end pipeline of the bidirectional component;
the elastic piece is clamped and embedded at the inner side of the variable tube;
the fan-shaped piece is arranged at the right end of the elastic piece;
wherein the sector piece is arranged in a circular ring shape.
Preferably, the variable component further comprises:
the inner hole is arranged in the middle of the right end of the elastic piece;
the fixing plate is welded and fixed at the right end of the elastic piece;
wherein, the fixed plate is a sheet-shaped circular ring.
Preferably, the variable component further comprises:
the fan-shaped groove is arranged at the right end of the fixed plate;
the circulating hole is arranged in the middle of the right end of the fixed plate;
wherein, the fan-shaped groove sets up along the circulation hole circumferencial direction.
Preferably, a flow guiding cavity matched with the first gear and the second gear is arranged in the middle of the bidirectional flow guiding box, and the inner wall of the flow guiding cavity is respectively attached to the first gear and the second gear.
Preferably, the first gear and the second gear have the same structure, and the meshing positions of the first gear and the second gear are provided with sealing layers.
Preferably, the diameter of the circulation hole of the fixing plate is larger than that of the inner hole, and twelve fan-shaped grooves are uniformly arranged at intervals in the circumferential direction of the circulation hole.
Preferably, reinforcing ribs are arranged between the adjacent fan-shaped grooves, and the reinforcing ribs correspond to gaps between the adjacent fan-shaped pieces.
Preferably, the sector grooves correspond to the sector plates on the elastic plate, and the area of the sector grooves is smaller than that of the sector plates.
The utility model has the following advantages: the present utility model provides a bi-directional variable flow device for an air conditioning system by improvement herein, having the following improvements over the same type of equipment:
according to the bidirectional variable flow device of the air conditioning system, the bidirectional component is arranged at the right end of the distributing valve, so that the motor indirectly drives the second gear to rotate along the inner wall of the flow guiding cavity, the volume of the space at the disengaging side of the first gear and the second gear is changed from small to large, vacuum is formed, liquid is sucked, the volume of the space at the engaging side of the first gear and the second gear is changed from large to small, the liquid is conveniently extruded into the distributing valve or the variable pipe, the bidirectional circulation effect is achieved, the whole volume of the air conditioning system is prevented from being enlarged, and the working efficiency of the air conditioning system is improved.
According to the bidirectional variable flow device of the air conditioning system, the variable component is arranged at the right end of the bidirectional component, when liquid is extruded into the distribution valve, the liquid indirectly turns over the fan-shaped piece left in the inner hole of the variable pipe and is opened, so that the flow sectional area is obviously increased, the resistance of the liquid in the flow process is reduced by increasing the flow sectional area of the liquid, the pressure loss of the liquid is reduced, the phenomenon that the refrigerant generates flash gas due to overlarge pressure loss of an outlet of the distributor is avoided, the refrigerating capacity is influenced, and meanwhile, the opening of the expansion valve is overlarge, so that the service life of the expansion valve is prolonged.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic diagram of the structure of the present utility model;
FIG. 3 is a schematic perspective view of a bi-directional assembly of the present utility model;
FIG. 4 is a schematic perspective view of a bi-directional assembly of the present utility model;
FIG. 5 is a schematic perspective view of a variable component of the present utility model;
fig. 6 is a schematic perspective exploded view of a variable component of the present utility model.
Wherein: the distribution valve-1, the bidirectional component-2, the variable component-3, the mounting bottom plate-21, the motor-22, the bidirectional diversion box-23, the left flow port-24, the right flow port-25, the diversion cavity-26, the first gear-27, the second gear-28, the variable pipe-31, the elastic sheet-32, the sector sheet-33, the inner hole-34, the fixed plate-35, the sector groove-36 and the circulation hole-37.
Detailed Description
The principles and features of the present utility model are described below with reference to fig. 2-6, which are examples for illustration only and are not intended to limit the scope of the utility model. The utility model is more particularly described by way of example in the following paragraphs with reference to the drawings. Advantages and features of the utility model will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Embodiment one:
referring to fig. 2, the bi-directional variable flow device of the air conditioning system of the present utility model includes a distribution valve 1.
Referring to fig. 3 and 4, the bidirectional variable flow device of the air conditioning system according to the present utility model further includes: the left end of the bidirectional component 2 is connected with the right end pipeline of the distribution valve 1, the bidirectional component 2 can conduct bidirectional flow guiding on the distribution valve 1 during operation, the left end of the variable component 3 is connected with the right end pipeline of the bidirectional component 2, and the variable component 3 can control the flow of the bidirectional flow guiding during operation;
the bi-directional assembly 2 comprises: the installation bottom plate 21 is arranged at the bottom side of the right end of the distribution valve 1, the motor 22 is fixed at the rear part of the top end of the installation bottom plate 21 by bolts, the rear end of the bidirectional flow guide box 23 is rotationally connected with the output shaft of the motor 22, and the pipeline at the right end of the left flow port 24 is connected with the bidirectional flow guide box 23;
the left end of the right flow port 25 is in pipeline connection with the right end of the bidirectional flow guide box 23, the flow guide cavity 26 is arranged in the bidirectional flow guide box 23, the rear end of the first gear 27 is rotationally connected with the top of the rear end in the flow guide cavity 26, the top of the second gear 28 is meshed with the bottom end insection of the first gear 27, the left flow port 24 and the right flow port 25 are identical in structure, and the motor 22 is started, so that the first gear 27 and the second gear 28 control the flow direction of the flow guide cavity 26.
Referring to fig. 5 and 6, the bidirectional variable flow device of the air conditioning system of the present utility model, the variable component 3 comprises: the variable tube 31, the left end of the variable tube 31 is connected with the right end of the bidirectional component 2 in a pipeline way, the elastic sheet 32 is clamped and embedded inside the variable tube 31, the sector sheet 33 is arranged at the right end of the elastic sheet 32, and the sector sheet 33 is arranged in a circular ring shape;
the hole 34 sets up at the elastic sheet 32 right-hand member middle part, and fixed plate 35 welded fastening is at the elastic sheet 32 right-hand member, and fixed plate 35 is the slice ring, and fan-shaped groove 36 sets up at the fixed plate 35 right-hand member, and the fixed plate 35 right-hand member middle part is located to circulation hole 37, and fan-shaped groove 36 sets up along circulation hole 37 circumferencial direction, and the circulation direction is different for fan-shaped piece 33 and fixed plate 35 control the difference of circulation volume.
Referring to fig. 4, in the bi-directional variable flow device of the air conditioning system of the present utility model, a flow guiding cavity 26 adapted to both the first gear 27 and the second gear 28 is provided in the middle of the bi-directional flow guiding box 23, and the inner wall of the flow guiding cavity 26 is respectively attached to both the first gear 27 and the second gear 28, so that the flow guiding cavity 26 provides a rotation space for the first gear 27 and the second gear 28.
Referring to fig. 4, in the bi-directional variable flow device of the air conditioning system of the present utility model, the first gear 27 and the second gear 28 have the same structure, and the meshing positions of the first gear 27 and the second gear 28 are provided with sealing layers, so that the rotation directions of the first gear 27 and the second gear 28 are circulation directions.
Referring to fig. 6, in the bi-directional variable flow device of an air conditioning system of the present utility model, the diameter of the flow holes 37 of the fixing plate 35 is larger than that of the inner holes 34, and twelve fan-shaped grooves 36 are uniformly arranged at intervals along the circumferential direction of the flow holes 37, so that the stability of the flow rate is controlled.
Referring to fig. 6, in the bi-directional variable flow device of the air conditioning system of the present utility model, the adjacent fan-shaped grooves 36 are provided with the reinforcing ribs, and the reinforcing ribs correspond to the gaps between the adjacent fan-shaped pieces 33, so that the control flow is more stable.
Referring to fig. 6, in the bi-directional variable flow device of the air conditioning system of the present utility model, the fan-shaped groove 36 corresponds to the fan-shaped piece 33 on the elastic piece 32, and the area of the fan-shaped groove 36 is smaller than the area of the fan-shaped piece 33, so that the fan-shaped piece 33 is convenient to block the fan-shaped groove 36.
Embodiment two:
in the bidirectional variable flow device of the air conditioning system, the output shaft of the motor 22 coaxially rotates with the through hole at the rear end of the first gear 27, so that the motor 22 provides rotating power for the first gear 27, the rear end of the second gear 28 is rotationally connected with the bottom of the rear end in the flow guiding cavity 26, and the flow guiding cavity 26 provides rotating space for the second gear 28.
The utility model provides a bidirectional variable flow device of an air conditioning system through improvement, and the working principle is as follows;
firstly, when the equipment is used, the equipment is firstly placed in a working area, and then the device is connected with an external power supply, so that the power supply required by the work of the equipment can be provided;
secondly, firstly, the motor 22 is started to drive the first gear 27 to rotate, so that the first gear 27 drives the second gear 28 to rotate along the inner wall of the diversion cavity 26, the volume of the space on the disengaging side of the first gear 27 and the second gear 28 is changed from small to large, vacuum is formed, liquid is sucked, the volume of the space on the engaging side of the first gear 27 and the second gear 28 is changed from large to small, and therefore the liquid is conveniently extruded into the distribution valve 1 or the variable tube 31, the bidirectional circulation effect is achieved, the whole volume of an air conditioning system is prevented from being larger, and the working efficiency is improved;
thirdly, when the liquid is squeezed into the distributing valve 1, the liquid flows leftwards through the fan-shaped groove 36 and the flow holes 37 of the fixed plate 35, the fan-shaped piece 33 is folded leftwards and opened in the inner hole 34 of the variable pipe 31, so that the flow cross-section area is obviously increased, the resistance of the liquid in the flow process is reduced by increasing the liquid flow cross-section area, the pressure loss of the liquid is reduced, the phenomenon that the refrigerant generates flash gas due to overlarge pressure loss at the outlet of the distributor 1, the opening of the expansion valve is overlarge while the refrigerating capacity is influenced is avoided, and the service life of the expansion valve is prolonged.
According to the utility model, by improving and providing the bidirectional variable flow device of the air conditioning system, the bidirectional component 2 is arranged at the right end of the distribution valve 1, so that the motor 22 indirectly drives the second gear 28 to rotate along the inner wall of the flow guiding cavity 26, the volume of the space at the disengaging side of the first gear 27 and the second gear 28 is changed from small to large, vacuum is formed, liquid is sucked, the volume of the space at the engaging side of the first gear 27 and the second gear 28 is changed from large to small, and the liquid is conveniently extruded into the distribution valve 1 or the variable tube 31, so that the bidirectional flow effect is achieved, the whole volume of the air conditioning system is prevented from being larger, and the working efficiency is improved; through having set up variable subassembly 3 at two-way subassembly 2 right-hand member, when liquid squeezes into distribution valve 1, make liquid indirectly turn over fan-shaped piece 33 left in the hole 34 of variable pipe 31 and open to make the cross-sectional area of circulation show increase, through increasing the cross-sectional area of liquid circulation, reduced the resistance of liquid circulation process, thereby reduced the pressure loss of liquid, thereby avoid the too big and lead to the refrigerant to produce flash gas of dispenser 1 export pressure loss, cause the expansion valve aperture too big when influencing the refrigerating capacity, thereby improved the life of expansion valve.
The basic principle and main characteristics of the utility model and the advantages of the utility model are shown and described above, standard parts used by the utility model can be purchased from market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of the parts adopt conventional means such as mature bolt rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that the description is omitted.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The bidirectional variable flow device of the air conditioning system comprises a distributing valve (1);
characterized by further comprising:
the left end of the bidirectional component (2) is connected with the right end of the distribution valve (1) through a pipeline;
wherein the bidirectional component (2) can perform bidirectional diversion on the distribution valve (1) during operation;
the variable component (3), the left end of the variable component (3) is connected with the right end pipeline of the bidirectional component (2);
wherein, the variable component (3) can control the flow of the bidirectional diversion during operation;
the bi-directional assembly (2) comprises:
the mounting bottom plate (21), the said mounting bottom plate (21) locates the bottom side of right end of the distributing valve (1);
the motor (22) is fixed at the rear part of the top end of the mounting bottom plate (21) through bolts;
the rear end of the bidirectional flow guiding box (23) is rotationally connected with an output shaft of the motor (22);
a left flow port (24), wherein a pipeline at the right end of the left flow port (24) is connected with a bidirectional diversion box (23);
the left end of the right flow port (25) is connected with the right end pipeline of the bidirectional flow guide box (23);
the flow guide cavity (26), the said flow guide cavity (26) locates in the two-way flow guide box (23);
the rear end of the first gear (27) is rotationally connected with the top of the rear end in the diversion cavity (26);
the top end of the second gear (28) is meshed with the insection at the bottom end of the first gear (27);
wherein the left flow port (24) and the right flow port (25) have the same structure.
2. The bi-directional variable flow device of an air conditioning system of claim 1, wherein: the variable component (3) comprises:
the left end of the variable tube (31) is connected with the right end pipeline of the bidirectional component (2);
an elastic sheet (32), wherein the elastic sheet (32) is embedded inside the variable tube (31);
a sector piece (33), wherein the sector piece (33) is arranged at the right end of the elastic piece (32);
wherein the sector piece (33) is arranged in a circular ring shape.
3. The bi-directional variable flow device of an air conditioning system of claim 2, wherein: the variable component (3) further comprises:
an inner hole (34), wherein the inner hole (34) is arranged in the middle of the right end of the elastic sheet (32);
the fixing plate (35), the said fixing plate (35) welds and fixes in the right end of the elastic sheet (32);
wherein, the fixed plate (35) is a sheet-shaped circular ring.
4. A bi-directional variable flow device for an air conditioning system according to claim 3, wherein: the variable component (3) further comprises:
the fan-shaped groove (36) is formed in the right end of the fixing plate (35);
the circulating hole (37) is formed in the middle of the right end of the fixed plate (35);
wherein the fan-shaped grooves (36) are arranged along the circumferential direction of the flow holes (37).
5. The bi-directional variable flow device of an air conditioning system of claim 1, wherein: the middle part of the bidirectional flow guiding box (23) is provided with a flow guiding cavity (26) which is matched with the first gear (27) and the second gear (28), and the inner wall of the flow guiding cavity (26) is respectively attached to the first gear (27) and the second gear (28).
6. The bi-directional variable flow device of an air conditioning system of claim 1, wherein: the first gear (27) and the second gear (28) are identical in structure, and sealing layers are arranged at the meshing positions of the first gear (27) and the second gear (28).
7. A bi-directional variable flow device for an air conditioning system according to claim 3, wherein: the diameter of the circulation holes (37) of the fixing plate (35) is larger than that of the inner holes (34), and twelve fan-shaped grooves (36) are uniformly arranged in the circulation holes (37) at intervals along the circumferential direction.
8. The bi-directional variable flow device of an air conditioning system of claim 4, wherein: reinforcing ribs are arranged between the adjacent fan-shaped grooves (36), and the reinforcing ribs correspond to gaps between the adjacent fan-shaped pieces (33).
9. The bi-directional variable flow device of an air conditioning system of claim 4, wherein: the sector grooves (36) correspond to the sector pieces (33) on the elastic piece (32), and the area of the sector grooves (36) is smaller than that of the sector pieces (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223311832.4U CN219120735U (en) | 2022-12-11 | 2022-12-11 | Bidirectional variable flow device of air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223311832.4U CN219120735U (en) | 2022-12-11 | 2022-12-11 | Bidirectional variable flow device of air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219120735U true CN219120735U (en) | 2023-06-02 |
Family
ID=86526953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223311832.4U Active CN219120735U (en) | 2022-12-11 | 2022-12-11 | Bidirectional variable flow device of air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219120735U (en) |
-
2022
- 2022-12-11 CN CN202223311832.4U patent/CN219120735U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201582400U (en) | Dynamic equilibrium electric regulation integrated valve | |
| CN219120735U (en) | Bidirectional variable flow device of air conditioning system | |
| CN203605323U (en) | Air-conditioner indoor unit | |
| CN101178192A (en) | Multistage compression air-conditioner | |
| CN214620172U (en) | Air energy heat pump with anti-freezing function | |
| WO2019205418A1 (en) | Vertical wall-mounted air conditioner indoor unit capable of two-way mounting | |
| CN215597610U (en) | Washing fresh air device, air conditioner indoor unit and air conditioner | |
| CN202126022U (en) | Air conditioner indoor unit with throttling device | |
| CN214841219U (en) | Air conditioner and fresh air purification module thereof | |
| CN206959164U (en) | Air conditioner | |
| CN212227215U (en) | Indoor unit of air conditioner | |
| CN113531710B (en) | Cold and hot central air conditioning pump circulation system | |
| CN212299188U (en) | Air duct machine and air conditioning system | |
| CN102042644B (en) | Split-type air conditioner outdoor unit with double rising inhalation pipe | |
| CN217716096U (en) | Collecting pipe of automobile air conditioner evaporator | |
| CN202133199U (en) | Throttling valve structure for air conditioner | |
| CN203274080U (en) | Integrated central air conditioner distribution system | |
| CN206831681U (en) | Window-mounted air conditioner | |
| CN219102059U (en) | Air conditioning equipment and electronic expansion valve | |
| CN221238054U (en) | High-efficient cooling water circulating device | |
| CN217685345U (en) | Air duct machine | |
| CN1374480A (en) | Waring and cooling air conditioning system in floor | |
| CN202133067U (en) | Connecting pipe structure for air-conditioning indoor and outdoor units | |
| CN216924598U (en) | Adjustable evaporative cooler structure and air conditioning unit | |
| CN221075305U (en) | Flow control structure of flow valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |