CN212227472U - Wind path system of split three-door refrigerator - Google Patents

Wind path system of split three-door refrigerator Download PDF

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Publication number
CN212227472U
CN212227472U CN202020149929.1U CN202020149929U CN212227472U CN 212227472 U CN212227472 U CN 212227472U CN 202020149929 U CN202020149929 U CN 202020149929U CN 212227472 U CN212227472 U CN 212227472U
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Prior art keywords
air
temperature
chamber
refrigerating
freezing
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CN202020149929.1U
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Chinese (zh)
Inventor
任立人
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Jiangsu Yuanlong Appliances Co ltd
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Jiangsu Yuanlong Appliances Co ltd
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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/067—Evaporator fan units
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/006—General constructional features for mounting refrigerating machinery components
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0683—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans the fans not of the axial type

Abstract

The utility model relates to a wind path system of three refrigerator run from opposite directions belongs to refrigerator technical field, including freezer, walk-in and temperature-changing room, the walk-in sets up the one side at the refrigerator, freezer and temperature-changing room set up the opposite side at the walk-in, just the freezer sets up the below in temperature-changing room, the rear side of freezer is provided with the evaporimeter, the top of evaporimeter is provided with the fan, the air-out side of fan be provided with respectively with the communicating freezing air-out wind channel of freezer, with the communicating cold-stored air-out wind channel of walk-in, and with the alternating temperature air-out wind channel that the temperature-changing room links to each other, be provided with cold-stored air door on the cold-stored air-out wind channel, be. The invention can shorten the length of the variable-temperature air outlet duct, and reduce the cold loss of cold air in the variable-temperature air outlet duct in the refrigeration process, thereby enlarging the temperature change amplitude in the temperature change process of the variable-temperature chamber.

Description

Wind path system of split three-door refrigerator
Technical Field
The utility model belongs to the technical field of the refrigerator, concretely relates to wind path system of three refrigerator run from opposite directions.
Background
The split three-door refrigerator is a traditional split two-door refrigerator which is separated into a single compartment as a temperature-variable chamber, well overcomes the defects that the traditional split two-door refrigerator lacks the single temperature-variable chamber and the freezing and refrigerating volumes are fixed, and is increasingly popular with consumers. Most of the split-type three-door refrigerators in the market at present divide a refrigerating chamber into an upper layout and a lower layout, the upper portion is the refrigerating chamber, the lower portion is a temperature-changing chamber, and due to the fact that the distance of an air path from a freezing chamber to the temperature-changing chamber is long, the temperature-changing range of the temperature-changing chamber can only be generally-7 ℃, wide temperature changing of the temperature-changing chamber of-18-7 ℃ can not be achieved, and the practicability of the temperature-changing chamber is greatly influenced. In the market, a part of split three-door temperature change chambers adopt independent evaporators for refrigeration to realize wide temperature change of the temperature change chambers, but the method has high cost and large occupied space, and reduces the effective volume of the refrigerator.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a wind path system of three door refrigerators of run from opposite directions to solve the little problem of temperature change room temperature range.
The utility model discloses a wind path system of three refrigerator of run from opposite directions realizes like this:
the utility model provides a wind path system of three refrigerator run from opposite directions, includes freezer, walk-in and temperature-changing room, the walk-in sets up the one side at the refrigerator, freezer and temperature-changing room set up the opposite side at the walk-in, just the freezer sets up the below in temperature-changing room, the rear side of freezer is provided with the evaporimeter, the top of evaporimeter is provided with the fan, the air-out side of fan be provided with respectively with the communicating freezing air-out wind channel of freezer, with the communicating cold-stored air-out wind channel of walk-in, and with the alternating temperature air-out wind channel that the temperature-changing room links to each other, be provided with cold-stored air door on the cold-stored air-out wind.
Furthermore, the chamber where the evaporator is located is connected with a freezing return air duct, a refrigerating return air duct and a variable temperature return air duct, the freezing return air duct is communicated with the freezing chamber, the refrigerating return air duct is communicated with the refrigerating chamber, and the variable temperature return air duct is communicated with the variable temperature chamber.
Furthermore, a refrigeration air duct panel is arranged on the upper portion of the rear wall of the refrigeration chamber, a refrigeration distribution air duct is arranged on the rear side of the refrigeration air duct panel, and the refrigeration distribution air duct is respectively connected with the refrigeration air outlet air duct and a refrigeration air outlet arranged on the refrigeration air duct panel.
Furthermore, a freezing air duct panel is arranged on the rear wall of the freezing chamber, and a freezing air outlet connected with the freezing air outlet duct is arranged on the freezing air duct panel.
Furthermore, a variable-temperature air duct panel is arranged on the rear wall of the variable-temperature chamber, and a variable-temperature air outlet connected with the variable-temperature air outlet duct is arranged on the variable-temperature air duct panel.
Furthermore, the refrigerating air door and the variable temperature air door can be independently controlled to be opened and closed.
Further, the fan is a centrifugal fan.
After the technical scheme is adopted, the utility model discloses the beneficial effect who has does:
(1) the utility model arranges the temperature-changing chamber and the freezing chamber at the same side, and the temperature-changing chamber is arranged above the freezing chamber, thereby shortening the length of the temperature-changing air channel, reducing the cold loss of cold air in the temperature-changing air channel in the refrigeration process, and further enlarging the temperature-changing range in the temperature-adjusting process of the temperature-changing chamber;
(2) the utility model discloses a combination of single evaporimeter and air door is realized increasing the effective volume of refrigerator to the temperature regulation of freezer, walk-in and temperature-changing room, improves the space utilization of refrigerator.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a structural view of an air path system of a split three-door refrigerator according to a preferred embodiment of the present invention;
fig. 2 is a front view of the air path system of the split three-door refrigerator according to the preferred embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;
in the figure: the refrigerator comprises a freezing chamber 1, a refrigerating chamber 2, a temperature-changing chamber 3, an evaporator 4, a fan 5, a freezing air outlet duct 6, a refrigerating air outlet duct 7, a temperature-changing air outlet duct 8, a refrigerating air door 9, a temperature-changing air door 10, a freezing air return duct 11, a refrigerating air return duct 12, a temperature-changing air return duct 13, a refrigerating distribution duct 14, a refrigerating air outlet 15, a temperature-changing air outlet 16, a freezing air outlet 17, a refrigerating air duct panel 18, a freezing air duct panel 19 and a temperature-changing air duct panel 20.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-4, an air path system of a split three-door refrigerator includes a freezing chamber 1, a refrigerating chamber 2 and a temperature-variable chamber 3, the refrigerating chamber 2 is disposed at one side of the refrigerator, the freezing chamber 1 and the temperature-variable chamber 3 are disposed at opposite sides of the refrigerating chamber 2, the freezing chamber 1 is disposed below the temperature-variable chamber 3, an evaporator 4 is disposed at a rear side of the freezing chamber 1, a fan 5 is disposed above the evaporator 4, a freezing air outlet duct 6 communicated with the freezing chamber 1, a refrigerating air outlet duct 7 communicated with the refrigerating chamber 2, and a temperature-variable air outlet duct 8 connected with the temperature-variable chamber 3 are disposed at an air outlet side of the fan 5, a refrigerating air door 9 is disposed on the refrigerating air outlet duct 7, and a temperature-variable air door 10 is.
In order to form independent air path circulation for each compartment, a cavity where the evaporator 4 is located is connected with a freezing return air duct 11, a refrigerating return air duct 12 and a variable temperature return air duct 13, the freezing return air duct 11 is communicated with the freezing chamber 1, the refrigerating return air duct 12 is communicated with the refrigerating chamber 2, and the variable temperature return air duct 13 is communicated with the variable temperature chamber 3.
Specifically, the air inlet side of the fan 5 is connected with the chamber where the evaporator 4 is located, the evaporator 4 cools the air in the chamber where the evaporator 4 is located, and then the cooled air is respectively sent into the freezing air outlet duct 6, the refrigerating air outlet duct 7 and the variable-temperature air outlet duct 8 through the fan 5, so that the freezing chamber 1, the refrigerating chamber 2 and the variable-temperature chamber 3 are independently cooled, and the air exhausted from the freezing chamber 1, the refrigerating chamber 2 and the variable-temperature chamber 3 enters the chamber where the evaporator 4 is located again through the freezing air return duct 11, the refrigerating air return duct 12 and the variable-temperature air return duct 13, and the next cooling is performed.
In order to increase the uniformity of the cooling of the refrigerating chamber 2, a refrigerating air duct panel 18 is arranged on the upper portion of the rear wall of the refrigerating chamber 2, a refrigerating distribution air duct 14 is arranged on the rear side of the refrigerating air duct panel 18, and the refrigerating distribution air duct 14 is respectively connected with the refrigerating air outlet air duct 7 and a refrigerating air outlet 15 arranged on the refrigerating air duct panel 18.
Specifically, cold-stored air outlet 15 includes two at least, and sets up side by side about, in this embodiment, cold-stored air outlet 15 is provided with two.
The refrigerating air outlet 15 is arranged on a refrigerating air duct panel 18 with a planar design, and compared with the traditional protruding refrigerating chamber air outlet 15 and side air outlet, the refrigerating air outlet can improve the cooling uniformity of the refrigerating chamber 2 and the overall attractiveness of the refrigerator.
Similarly, in order to increase the uniformity of temperature adjustment of the variable temperature chamber 3, a variable temperature air duct panel 20 is disposed on the rear wall of the variable temperature chamber 3, and a variable temperature air outlet 16 connected to the variable temperature air outlet duct 8 is disposed on the variable temperature air duct panel 20.
Specifically, the variable temperature air outlets 16 include at least two air outlets, and are distributed in parallel from top to bottom, and in this embodiment, the variable temperature air outlets 16 are provided with two air outlets.
In order to increase the refrigeration uniformity of the freezing chamber 1, a freezing air duct panel 19 is arranged on the rear wall of the freezing chamber 1, and a freezing air outlet 17 connected with the freezing air outlet duct 6 is arranged on the freezing air duct panel 19.
Specifically, the number of the freezing air outlets 17 is at least four, and the freezing air outlets 17 are distributed in a matrix manner, and in this embodiment, the freezing air outlets 17 include six and are distributed in two rows and two columns.
Like the refrigerating air outlet 15, the freezing air outlet 17 and the variable-temperature air outlet 16 are both arranged on the corresponding planar air duct panel, so that the uniformity of temperature adjustment of the corresponding compartment can be improved, and the overall attractiveness of the refrigerator can be improved. And the freezing air outlet 17 and the variable temperature air outlet 16 are distributed according to the above way, so that the efficiency and uniformity of temperature adjustment of the corresponding room temperature can be further improved.
In order to connect with the return air duct to form air path circulation, return air inlets which are the same as the corresponding return air channels are respectively arranged in the freezing chamber 1, the refrigerating chamber 2 and the temperature-changing chamber 3.
In order to realize the independent temperature regulation of the refrigerating chamber 2 and the temperature changing chamber 3, the refrigerating damper 9 and the temperature changing damper 10 can be independently controlled to be opened and closed.
Because the temperature-changing chamber 3 is positioned right above the freezing chamber 1, when the temperature-changing chamber 3 needs to refrigerate, the temperature-changing air door 10 is opened, the refrigerating air door 9 is closed, the fan 5 is started, and cold air is simultaneously supplied to the freezing chamber 1 and the temperature-changing chamber 3, because the distance between the temperature-changing air outlet 16 and the fan 5 is shortened, the loss of cold energy when the cold air is conveyed to the temperature-changing chamber 3 is smaller, and the temperature-changing chamber 3 can obtain enough cold energy to meet the requirement of wide temperature adjustment of the temperature-changing chamber 3.
The wide-range temperature adjustment refers to the temperature adjustment range of-18 ℃ to 7 ℃.
When the refrigerating chamber 2 needs to be refrigerated, the refrigerating air door 9 is opened, the temperature changing air door 10 is closed, the fan 5 is started, and cold air is supplied to the freezing chamber 1 and the refrigerating chamber 2 simultaneously so as to meet the refrigerating requirement of the refrigerating chamber 2.
As shown in fig. 2 and 4, the direction of circulation of the air passage of the refrigerating compartment 2 coincides with the direction indicated by the arrow, and fig. 2 is a structural view when the freezing duct panel 19 and the variable temperature duct panel 20 are removed.
As shown in fig. 3, the direction of circulation of the air passage in variable temperature chamber 3 and freezing chamber 1 coincides with the direction indicated by the arrow.
The fan 5 is a centrifugal fan, and the efficiency of air flow can be improved in the air path circulation process.
The utility model discloses set up freezer 1 and temperature-changing room 3 in the homonymy of refrigerator, and freezer 1 is located the below, and the length in alternating temperature air-out wind channel 8 is promptly changed to the subtract short alternating temperature wind channel that can be relative reaches the purpose that 3 broad width in temperature-changing room were adjusted.
Because the refrigerating chamber 2 has one side exclusive, the volume of the refrigerating chamber 2 can be correspondingly increased, and the use requirement of a user on the refrigerator is better met.
In the present embodiment, the temperature-changing chamber 3 and the freezing chamber 1 are provided on the left side, and the refrigerating chamber 2 is provided on the right side, and accordingly, the three chambers may be exchanged left and right.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (7)

1. The air path system of the split three-door refrigerator is characterized by comprising a freezing chamber (1), a refrigerating chamber (2) and a temperature-changing chamber (3), wherein the refrigerating chamber (2) is arranged on one side of the refrigerator, the freezing chamber (1) and the temperature-changing chamber (3) are arranged on the opposite sides of the refrigerating chamber (2), the freezing chamber (1) is arranged below the temperature-changing chamber (3), an evaporator (4) is arranged on the rear side of the freezing chamber (1), a fan (5) is arranged above the evaporator (4), an air outlet side of the fan (5) is respectively provided with a freezing air outlet channel (6) communicated with the freezing chamber (1), a refrigerating air outlet channel (7) communicated with the refrigerating chamber (2) and a variable-temperature air outlet channel (8) connected with the temperature-changing chamber (3), and a refrigerating air door (9) is arranged on the refrigerating air outlet channel (7), and a variable temperature air door (10) is arranged on the variable temperature air outlet duct (8).
2. The air path system of the split three-door refrigerator according to claim 1, wherein the chamber in which the evaporator (4) is located is connected with a freezing return air duct (11), a refrigerating return air duct (12) and a variable temperature return air duct (13), the freezing return air duct (11) is communicated with the freezing chamber (1), the refrigerating return air duct (12) is communicated with the refrigerating chamber (2), and the variable temperature return air duct (13) is communicated with the variable temperature chamber (3).
3. The air path system of the split three-door refrigerator according to claim 1, wherein a refrigerating air duct panel (18) is disposed on an upper portion of a rear wall of the refrigerating chamber (2), a refrigerating distribution air duct (14) is disposed behind the refrigerating air duct panel (18), and the refrigerating distribution air duct (14) is respectively connected to the refrigerating air outlet duct (7) and a refrigerating air outlet (15) disposed on the refrigerating air duct panel (18).
4. The air path system of the split three-door refrigerator according to claim 1, wherein a freezing air duct panel (19) is disposed on a rear wall of the freezing chamber (1), and a freezing air outlet (17) connected to the freezing air outlet duct (6) is disposed on the freezing air duct panel (19).
5. The air path system of the split three-door refrigerator according to claim 1, wherein a variable temperature air duct panel (20) is disposed on a rear wall of the variable temperature chamber (3), and a variable temperature air outlet (16) connected to the variable temperature air outlet duct (8) is disposed on the variable temperature air duct panel (20).
6. The air path system of the split three-door refrigerator as claimed in claim 1, wherein the refrigerating damper (9) and the variable temperature damper (10) are each independently controllable to open and close.
7. The air path system of the split three-door refrigerator according to claim 1, wherein the fan (5) is a centrifugal fan.
CN202020149929.1U 2019-08-19 2020-01-24 Wind path system of split three-door refrigerator Active CN212227472U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910763745.6A CN110375497A (en) 2019-08-19 2019-08-19 A kind of single evaporator three-temperature-zone air path system for American refrigerator
CN2019107637456 2019-08-19

Publications (1)

Publication Number Publication Date
CN212227472U true CN212227472U (en) 2020-12-25

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Family Applications (5)

Application Number Title Priority Date Filing Date
CN201910763745.6A Pending CN110375497A (en) 2019-08-19 2019-08-19 A kind of single evaporator three-temperature-zone air path system for American refrigerator
CN202020149794.9U Active CN211552175U (en) 2019-08-19 2020-01-24 Single-evaporator three-temperature-zone air path system for American refrigerator
CN202010077175.8A Pending CN111076481A (en) 2019-08-19 2020-01-24 Wind path system of split three-door refrigerator
CN202020149929.1U Active CN212227472U (en) 2019-08-19 2020-01-24 Wind path system of split three-door refrigerator
CN202010077176.2A Pending CN111121372A (en) 2019-08-19 2020-01-24 Single-evaporator three-temperature-zone air path system for American refrigerator

Family Applications Before (3)

Application Number Title Priority Date Filing Date
CN201910763745.6A Pending CN110375497A (en) 2019-08-19 2019-08-19 A kind of single evaporator three-temperature-zone air path system for American refrigerator
CN202020149794.9U Active CN211552175U (en) 2019-08-19 2020-01-24 Single-evaporator three-temperature-zone air path system for American refrigerator
CN202010077175.8A Pending CN111076481A (en) 2019-08-19 2020-01-24 Wind path system of split three-door refrigerator

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN202010077176.2A Pending CN111121372A (en) 2019-08-19 2020-01-24 Single-evaporator three-temperature-zone air path system for American refrigerator

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CN (5) CN110375497A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111141083A (en) * 2020-01-19 2020-05-12 合肥华凌股份有限公司 Air duct cover plate and refrigerator
CN111397275B (en) * 2020-03-17 2021-09-28 广东奥马冰箱有限公司 Refrigerator with single system, double fans and multiple temperature zones
CN112013603A (en) * 2020-08-26 2020-12-01 海信容声(广东)冰箱有限公司 Refrigerator with a door
CN112665271A (en) * 2021-01-15 2021-04-16 长虹美菱股份有限公司 Absolute constant-temperature special area of refrigerator and control method
CN117663616A (en) * 2023-12-05 2024-03-08 广东凯得智能科技股份有限公司 Independent temperature control three-temperature-zone refrigeration equipment with single evaporator

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CN111121372A (en) 2020-05-08
CN111076481A (en) 2020-04-28
CN110375497A (en) 2019-10-25
CN211552175U (en) 2020-09-22

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