CN111336602A - Anti-interference dehumidification equipment - Google Patents
Anti-interference dehumidification equipment Download PDFInfo
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- CN111336602A CN111336602A CN202010232818.1A CN202010232818A CN111336602A CN 111336602 A CN111336602 A CN 111336602A CN 202010232818 A CN202010232818 A CN 202010232818A CN 111336602 A CN111336602 A CN 111336602A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
- F24F2003/1446—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only by condensing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Drying Of Gases (AREA)
Abstract
The invention discloses anti-interference dehumidification equipment which comprises a shell, wherein an air cavity is arranged in the shell, a first air outlet penetrating through the left side surface of the shell is arranged in the left wall of the air cavity, a first support column is fixedly arranged on the bottom wall of the air cavity, a first motor is arranged in the first support column, a first rotating shaft is arranged on the right side surface of the first motor, a first fan is fixedly arranged at the right end of the first rotating shaft, and a condenser is arranged on the right side of the first fan; the invention has simple structure and convenient use, changes the weight change after the desiccant absorbs moisture into the humidity in the air to replace the hygrometer, avoids the influence of corrosive substances in the air on the hygrometer, and is also provided with the dustproof net to remove large-particle dust in the air outside the invention and prevent the fan from being damaged.
Description
Technical Field
The invention relates to the technical field of dehumidification, in particular to anti-interference dehumidification equipment.
Background
The principle of a refrigeration type air dehumidifier is to refrigerate air to below a dew point and remove condensed water. In the using process, the phenomenon that the dehumidifier is turned on, abnormal sound is generated during operation, and then the dehumidifier stops working occurs, because the dehumidifier controlled by the microcomputer is adopted, and the humidity sensor is a precise instrument, and the instrument fails when the dehumidifier is used in strong corrosive gas and large dust.
Disclosure of Invention
It is an object of the present invention to provide a tamper-proof dehumidification device, which overcomes the above-mentioned drawbacks of the prior art.
The anti-interference dehumidification equipment comprises a shell, wherein an air cavity is arranged in the shell, a first air outlet penetrating through the left side surface of the shell is arranged in the left wall of the air cavity, a first support column is fixedly arranged on the bottom wall of the air cavity, a first motor is arranged in the first support column, a first rotating shaft is arranged on the right side surface of the first motor, a first fan is fixedly arranged at the right end of the first rotating shaft, a condenser is arranged on the right side of the first fan, a dustproof cavity penetrating through the upper surface and the right side surface of the shell is arranged on the right side of the air cavity, first sliding grooves which are symmetrical in front and back positions are arranged in the front and back walls of the dustproof cavity, a dustproof net is arranged in the first sliding grooves, a collection box is arranged on the bottom wall of the dustproof cavity below the dustproof net, the dustproof cavity is communicated with the air cavity through a first air inlet arranged in the right wall of the air cavity, and a measurement cavity penetrating through the right side surface, the utility model discloses a drying oven, including measurement chamber, casing rear surface, second fan right side, second spout, first slider, second spout bottom and second spout underrun first spring coupling, be equipped with in the measurement chamber rear wall and run through the second air outlet of casing trailing flank, the second pillar has set firmly on the measurement chamber diapire, the second pillar right flank has set firmly the second motor, second motor right flank installs the second axis of rotation, second axis of rotation right-hand member has set firmly the second fan, second fan right side be equipped with the second spout of longitudinal symmetry in the measurement chamber front and back wall, sliding connection has first slider in the second spout, first slider bottom with second spout underrun first spring coupling, the inboard and drying oven front and back fixed connection of first spring, be equipped with the drying chamber in the drying chamber, the drier has been placed to the drying chamber, be equipped with the intercommunication mouth in the.
Optionally, a control block is arranged in the second chute on the front side, the top surface of the control block is connected with the top wall of the second chute on the front side through a second spring, a first limit groove is arranged in the front side surface of the control block, a fourth chute penetrating through the front side surface of the shell is arranged in front of the second chute on the front side, a pointer rod is connected in the fourth chute in a sliding manner, a fifth chute is arranged above the fourth chute, a rack rod is connected in the fifth chute in a sliding manner, the rack rod extends into the fourth chute and is fixedly connected with the pointer rod, a squeezing block extending into the fourth chute is fixedly arranged on the front side surface of the first slider on the front side, a gear meshed with the rack rod is rotatably connected between the left wall and the right wall of the fifth chute, the gear is connected with the right wall of the fifth chute through a coil spring, and the fifth chute is communicated with the second chute through a matching cavity, a pawl rod is rotationally connected between the left wall and the right wall of the matching cavity, extends forwards into the fifth chute and is meshed with the gear, and extends backwards into the first limiting groove.
Optionally, a third sliding groove is formed in the bottom wall of the air cavity below the condenser, and a water collecting box is connected in the third sliding groove in a sliding mode.
Optionally, the top surface of the shell is provided with a limiting column, the outer side of the dustproof cavity is provided with a shell, a second air inlet is formed in the right side face of the shell, and a second limiting groove matched with the limiting column is formed in the shell.
Optionally, a scale plate is fixedly arranged on the front side surface of the shell on the right side of the fourth chute.
The invention has the beneficial effects that: the invention has simple structure and convenient use, and the change of weight after the desiccant absorbs moisture is converted into the humidity in the air to replace a hygrometer, thereby avoiding the influence of corrosive substances in the air on the hygrometer. The invention is also provided with a dust screen, so that large-particle dust in the air is removed from the fan, and the fan is prevented from being damaged.
Drawings
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
FIG. 1 is a schematic structural view of a tamper-proof dehumidification apparatus of the present invention;
FIG. 2 is a schematic view of the structure at A-A in FIG. 1;
FIG. 3 is a schematic view of the structure at B in FIG. 1;
FIG. 4 is a schematic view of the structure at C-C in FIG. 3;
fig. 5 is a schematic view of the structure at D-D in fig. 4.
Detailed Description
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1-5, the interference-proof dehumidification device according to the embodiment of the present invention includes a housing 1, an air chamber 3 is disposed in the housing 1, a first air outlet 2 penetrating through a left side surface of the housing 1 is disposed in a left wall of the air chamber 3, a first pillar 5 is fixedly disposed on a bottom wall of the air chamber 3, a first motor 4 is disposed in the first pillar 5, a first rotating shaft 24 is mounted on a right side surface of the first motor, a first fan 23 is fixedly disposed at a right end of the first rotating shaft 24, a condenser 22 is disposed at a right side of the first fan 23, a dust-proof chamber 16 penetrating through an upper surface and a right side surface of the housing 2 is disposed at a right side of the air chamber 3, a first sliding chute 25 symmetrical in front and rear positions is disposed in a front wall and a rear wall of the dust-proof chamber 16, a dust-proof net 15 is disposed in the first sliding chute 25, a collection box 14 is disposed on, the dust-proof cavity 16 and the air cavity 3 are communicated through a first air inlet 21 arranged in the right wall of the air cavity 3, a measuring cavity 9 penetrating through the right side surface of the shell 1 is arranged below the dust-proof cavity 16, a second air outlet 8 penetrating through the rear side surface of the shell 1 is arranged in the rear wall of the measuring cavity 9, a second support column 10 is fixedly arranged on the bottom wall of the measuring cavity 9, a second motor 11 is fixedly arranged on the right side surface of the second support column 10, a second rotating shaft 12 is arranged on the right side surface of the second motor 11, a second fan 13 is fixedly arranged at the right end of the second rotating shaft 12, a second sliding groove 26 which is symmetrical in front and rear positions is arranged in the front and rear wall of the measuring cavity 9 on the right side of the second fan 13, a first sliding block 33 is slidably connected in the second sliding groove 26, the bottom of the first sliding block 33 is connected with the second sliding groove 26 through a first spring 32 on the bottom surface, the inner side of the first spring, a drying cavity 28 is arranged in the drying box 27, a drying agent 30 is arranged in the drying cavity 28, a communication port 29 is arranged in the left wall and the right wall of the drying box 27, a heater 31 is fixedly arranged on the bottom surface of the drying box 27, the dust screen 15 can prevent large dust particles from entering and damaging the first fan 23, the drying agent 30 can adsorb moisture in the air, the first slider 33 is driven to move downwards by the change of weight, the content of the moisture in the air can be converted by the weight increased by the drying agent 30 within a certain flow rate and time, so that the purpose of calculating the humidity is achieved, the moisture absorbed by the drying agent 30 can be re-evaporated into the air by the heater 31, and the second motor 11 and the heater 31 alternately operate to continuously measure the humidity in the air.
Preferably, a control block 38 is arranged in the second sliding chute 26 at the front side, the top surface of the control block 38 is connected with the top wall of the second sliding chute 26 at the front side through a second spring 37, a first limit groove 39 is arranged in the front side surface of the control block 3, a fourth sliding chute 45 penetrating through the front side surface of the housing 1 is arranged in front of the second sliding chute 26 at the front side, a finger rod 44 is connected in the fourth sliding chute 45 in a sliding manner, a fifth sliding chute 34 is arranged above the fourth sliding chute 45, a rack rod 40 is connected in the fifth sliding chute 34 in a sliding manner, the rack rod 40 extends into the fourth sliding chute 45 and is fixedly connected with the finger rod 44, a squeezing block 46 extending into the fourth sliding chute 45 is fixedly arranged at the front side surface of the first sliding block 33 at the front side, a gear 41 engaged with the rack rod 40 is rotatably connected between the left and right walls of the fifth sliding chute 34, the gear 41 is connected with the right wall of the fifth sliding chute 34 through a, the fifth slide groove 34 is communicated with the second slide groove 26 through a matching cavity 35, a detent lever 36 is rotatably connected between left and right walls of the matching cavity 35, the detent lever 36 extends forwards into the fifth slide groove 34 and is engaged with the gear 41, the detent lever 36 extends backwards into the first limit groove 39, when the first slide block 33 descends, the pressing block 46 drives the needle bar 44 to move downwards, the needle bar 44 drives the gear 41 to rotate anticlockwise through the rack bar 40, the coil spring 42 is tensioned, the gear 41 is acted by the detent lever 36 and cannot rotate clockwise under the action of the coil spring 42, when the first slide block 33 moves upwards, the pressing block 46 is disengaged from the needle bar 44, the needle bar 44 is kept immobile, and when the first slide block 33 presses the control block 38 upwards, the bottom wall of the first limit groove 39 presses the pawl rod 36, the pawl rod 36 rotates, the pawl rod 36 is disengaged from the gear 41, the gear 41 rotates clockwise under the action of the coil spring 42 to drive the rack rod 40 to move upwards, and the rack rod 40 drives the pointer rod 44 to move upwards.
Preferably, a third chute 6 is arranged in the bottom wall of the air cavity 3 below the condenser 22, a water collecting box 7 is slidably connected in the third chute 6, and the water collecting box 7 can be used for collecting water condensed in the condenser 22.
Preferably, the top surface of the shell 1 is provided with a limiting column 20, the outer side of the dust-proof cavity 16 is provided with a shell 18, the right side surface of the shell 18 is provided with a second air inlet 17, the shell 18 is internally provided with a second limiting groove 19 matched with the limiting column 20, the shell 18 can be taken down, so that the dust screen 15 is replaced or the collecting box 14 is taken out, and the limiting column 20 ensures that the shell 18 does not fall off.
Preferably, a scale plate 43 is fixedly arranged on the front side surface of the housing 1 on the right side of the fourth sliding chute 45, the scale plate 43 is marked with humidity, and the humidity in the air is indicated through the position of the pointer rod 44 on the scale plate 43.
In the initial state, the first spring 32 is compressed, the second spring 37 is compressed, the first slider 33 is located at the top of the second slide groove 26, the coil spring 42 is compressed, and the needle bar 44 is located at the top of the fourth slide groove 45.
When the dehumidification work is needed, the first motor 4 is started, the first rotating shaft 24 drives the first fan 23 to rotate, air passes through the second air inlet 17 and the first air inlet 21 enters the air chamber 3, the air passes through the condenser 22, moisture is condensed into water drops and falls into the water collecting box 7, and the air after dehumidification passes through the first air outlet 2 and is discharged outside the air chamber 3.
When humidity measurement is performed, the second motor 11 is started, the second rotating shaft 12 drives the second fan 13 to rotate, air enters the measurement cavity 9 through the second air inlet 17, when the air passes through the drying box 27, the air is in contact with the desiccant 30 through the communication port 29, the desiccant 30 adsorbs moisture in the air, the weight of the air is changed, the first slider 33 is driven to move downwards, when the first slider 33 descends, the pressing block 46 drives the pointer rod 44 to move downwards, and the indication number of the pointer rod on the scale plate 43 is the humidity at the moment;
after one measurement is completed, the second motor 11 stops working, the heater 31 can evaporate moisture absorbed by the desiccant 30 into air again, the weight of the drying oven 27 is reduced, the first slider 33 moves upwards, at the same time, the pointer rod remains stationary, when the first slider 33 presses the control block 38 upwards, the bottom wall of the first limiting groove 39 presses the pawl rod 36, the pawl rod 36 rotates, the pawl rod 36 is disengaged from the gear 41, the gear 41 rotates clockwise under the action of the coil spring 42, the rack rod 40 is driven to move upwards, the rack rod 40 drives the pointer rod 44 to move upwards, and the pointer rod 44 is restored in position;
the heater 31 stops operating, the second motor 11 starts operating, and the measurement is repeated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides a dehumidification equipment of jam-proof, includes the casing, be equipped with wind cavity in the casing, its characterized in that: a first air outlet penetrating through the left side surface of the shell is arranged in the left wall of the air cavity, a first support column is fixedly arranged on the bottom wall of the air cavity, a first motor is arranged in the first support column, a first rotating shaft is arranged on the right side surface of the first motor, a first fan is fixedly arranged at the right end of the first rotating shaft, a condensing machine is arranged on the right side of the first fan, a dustproof cavity penetrating through the upper surface and the right side surface of the shell is arranged on the right side of the air cavity, first sliding grooves which are symmetrical in front and back positions are arranged in the front and back walls of the dustproof cavity, a dustproof net is arranged in the first sliding grooves, a collecting box is arranged on the bottom wall of the dustproof cavity below the dustproof net, the dustproof cavity is communicated with the air cavity through a first air inlet arranged in the right wall of the air cavity, a measuring cavity penetrating through the right side surface of the shell is arranged below the dustproof cavity, and a second air, the utility model discloses a drying oven, including measurement chamber diapire, measurement chamber, second pillar, second motor right flank, second axis of rotation right-hand member has set firmly the second fan, second fan right side be equipped with the second spout of front and back position symmetry in the measurement chamber front and back wall, sliding connection has first slider in the second spout, first slider bottom with the first spring coupling of second spout underrun, first spring inboard and drying oven front and back fixed connection, be equipped with the drying chamber in the drying oven, the drier has been placed to the drying chamber, be equipped with the intercommunication mouth in the drying oven left and right wall, the drying oven bottom surface has set firmly the heater.
2. A tamper-proof dehumidification apparatus according to claim 1, wherein: a control block is arranged in the second sliding groove at the front side, the top surface of the control block is connected with the top wall of the second sliding groove at the front side through a second spring, a first limiting groove is arranged in the front side of the control block, a fourth sliding groove penetrating through the front side of the shell is arranged in front of the second sliding groove at the front side, a pointer rod is connected in the fourth sliding groove in a sliding manner, a fifth sliding groove is arranged above the fourth sliding groove, a rack rod is connected in the fifth sliding groove in a sliding manner, the rack rod extends into the fourth sliding groove and is fixedly connected with the pointer rod, a squeezing block extending into the fourth sliding groove is fixedly arranged on the front side of the first sliding block at the front side, a gear meshed with the rack rod is rotatably connected between the left wall and the right wall of the fifth sliding groove, the gear is connected with the right wall of the fifth sliding groove through a coil spring, and the fifth sliding groove is communicated with the second sliding, a pawl rod is rotationally connected between the left wall and the right wall of the matching cavity, extends forwards into the fifth chute and is meshed with the gear, and extends backwards into the first limiting groove.
3. A tamper-proof dehumidification apparatus according to claim 1, wherein: and a third sliding groove is formed in the bottom wall of the air cavity below the condensing machine, and a water collecting box is connected in the third sliding groove in a sliding mode.
4. A tamper-proof dehumidification apparatus according to claim 1, wherein: the dustproof air inlet is characterized in that a limiting column is arranged on the top surface of the shell, a shell is arranged on the outer side of the dustproof cavity, a second air inlet is formed in the right side face of the shell, and a second limiting groove matched with the limiting column is formed in the shell.
5. A tamper-proof dehumidification apparatus according to claim 2, wherein: and a scale plate is fixedly arranged on the front side surface of the shell on the right side of the fourth chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232818.1A CN111336602A (en) | 2020-03-28 | 2020-03-28 | Anti-interference dehumidification equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232818.1A CN111336602A (en) | 2020-03-28 | 2020-03-28 | Anti-interference dehumidification equipment |
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| Publication Number | Publication Date |
|---|---|
| CN111336602A true CN111336602A (en) | 2020-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010232818.1A Pending CN111336602A (en) | 2020-03-28 | 2020-03-28 | Anti-interference dehumidification equipment |
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| CN (1) | CN111336602A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229010A (en) * | 2020-10-10 | 2021-01-15 | 东莞市净诺环境科技股份有限公司 | New fan of wall-hanging double-duct maintenance of being convenient for |
| CN113380493A (en) * | 2020-09-17 | 2021-09-10 | 沅陵县向华电子科技有限公司 | Anti-interference miniature transformer |
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| CN108362605A (en) * | 2018-04-28 | 2018-08-03 | 华中科技大学 | A kind of automation integrated air humidity measuring instrument |
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| CN109060042A (en) * | 2018-09-14 | 2018-12-21 | 陕西众策网络科技发展有限公司 | A kind of ambient air quality monitoring device |
| CN209327296U (en) * | 2018-09-17 | 2019-08-30 | 陕西助智信息技术有限公司 | A kind of indoor air quality monitoring device |
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| CN112229010B (en) * | 2020-10-10 | 2021-12-07 | 东莞市净诺环境科技股份有限公司 | New fan of wall-hanging double-duct maintenance of being convenient for |
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