CN201407776Y - Bidirectional ventilation device - Google Patents
Bidirectional ventilation device Download PDFInfo
- Publication number
- CN201407776Y CN201407776Y CN2009200682842U CN200920068284U CN201407776Y CN 201407776 Y CN201407776 Y CN 201407776Y CN 2009200682842 U CN2009200682842 U CN 2009200682842U CN 200920068284 U CN200920068284 U CN 200920068284U CN 201407776 Y CN201407776 Y CN 201407776Y
- Authority
- CN
- China
- Prior art keywords
- air
- dividing plate
- volute
- air outlet
- outdoor
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a bidirectional ventilation device, comprising a shell, a baffle plate and a symmetry driving portion; wherein the shell is provided with an indoor sidewall toward indoorside and an outdoor sidewall toward outdoor side, the outdoor sidewall of the shell is provided with an indoor air outlet and an outdoor air inlet, the indoor sidewall of the shell is provided with anoutdoor air outlet and an indoor air inlet, the baffle plate is fixed in the shell for dividing the inner space of the shell into a first air channel and a second air channel symmetrically. The bidirectional ventilation device is characterized in that the indoor air outlet and the indoor air inlet are opposite to each other, the outdoor air outlet and the outdoor air inlet are opposite to each other, the indoor air outlet and the outdoor air outlet have same shape and size, the indoor air inlet and the outdoor air inlet have same shape and size, and the bidirectional ventilation device can balance indoor and outdoor air pressures, reduce vibration and reduce noise.
Description
Technical field
The utility model relates to a kind of bidirectional ventilated device of air exchange technical field, particularly a kind of bidirectional ventilated device of holding chamber inside and outside air pressure balance.
Background technology
With fresh air in the holding chamber is to guarantee healthy basic of people, along with the raising of people to the requirement of ventilation quality, at present, has developed diversified air interchanger, for example unidirectional exhaust or two-way air interchanger.Particularly, disclose in Chinese patent ZL200520024048.2 number and a kind ofly driven exhaust fans 302 by motor 301 indoor turbid air is discharged to the outdoor air cleaning air box (as shown in Figure 3) that carries out purified treatment, but owing to be unidirectional exhaust, therefore cause additional indoor fresh air deficiency, thereby cause room air sharply muddy, stablizing of destructible indoor temperature, humidity and air pressure etc. influences the healthy of user.In addition, United States Patent (USP) the 6th, 328, disclose a kind of in No. 095 with air inlet duct 401 and the exhausting duct 402 independent two-way air interchangers (as shown in Figure 4) that are provided with, it separates bellows inside by dividing plate 403 and forms air inlet duct 401 and exhausting duct 402, pollute room air to avoid turbid air to mix, and drive air intake fan 405 and ventilating fan 404 respectively, thereby take a breath by two motor 406,407 with fresh air.But, using two motor to drive respectively under the situation of air intake fan and ventilating fan, there are take up room big, high, the complex structure and other problems of cost, and because air inlet duct and exhausting duct are asymmetric, therefore the balance that is difficult for the holding chamber inner and outer air pressure, use can make indoor and outdoor produce draught head in airtight space for a long time, is unfavorable for healthy.
The purpose of this utility model is, at the above-mentioned deficiency of prior art, a kind of simple in structure, cost is low and scavenging efficiency is high blower fan is provided, and can reduces vibration and noise simultaneously at the holding chamber inside and outside air pressure balance.
Summary of the invention
The utility model is intended to overcome above-mentioned the deficiencies in the prior art, and a kind of bidirectional ventilated device of holding chamber inside and outside air pressure balance is provided.
The technical scheme that the utility model adopted is as follows:
A kind of bidirectional ventilated device, comprise: shell, it has the indoor sidewall towards the indoor, and towards the outdoor sidewall of outside, room air air outlet and outdoor air air inlet are set on the described outdoor sidewall of described shell, outdoor air air outlet and room air air inlet are set on the described indoor sidewall of described shell; Dividing plate, it is fixed in the described shell, the inner space of described shell is divided into first air channel and second air channel of symmetry; And symmetrical drive division; It is characterized in that: described room air air outlet is relative with described room air air inlet, described outdoor air air outlet is relative with described outdoor air air inlet, described room air air outlet is all identical with shape, the size of described outdoor air air outlet, and described room air air inlet is all identical with shape, the size of described outdoor air air inlet.
The utility model can be realized two-way ventilation, and guarantees that the air capacity that sucks and discharge equates, thereby guarantees that indoor and outdoor does not produce draught head.In addition, the utility model also has simple in structure, and manufacturing and maintenance cost are low, ventilation unit scavenging efficiency height, and aerodynamic noise is little, compact conformation, volume is small and exquisite, is convenient to advantages such as installation and transportation.
Description of drawings
Fig. 1 is vertical section structure schematic diagram of the structure of expression bidirectional ventilated device of the present utility model.
Fig. 2 is the schematic top plan view of bidirectional ventilated device of the present utility model.
Fig. 3 is the structural representation of the ventilation unit of prior art.
Fig. 4 is the structural representation of another ventilation unit of prior art.
The specific embodiment
Below, use accompanying drawing to come bidirectional ventilated device of the present utility model is illustrated.
Fig. 1 is vertical section structure schematic diagram of the structure of expression bidirectional ventilated device of the present utility model.Fig. 2 is the schematic top plan view along the M-M ' line among Fig. 1.As shown in Figure 1 and Figure 2, bidirectional ventilated device has: shell 1, symmetrical drive division 101, and first dividing plate 13, second partition 14, the 3rd dividing plate 15.
First dividing plate 13, second partition 14 and the 3rd dividing plate 15 are three detachable dividing plates, the inner space of whole casing 1 is divided into two linear pattern air channels of symmetry, i.e. first air channel 21 and second air channel 22, and make these two air channels independently of one another and airtight, thereby prevent that two air in the air channel from mixing mutually, improved scavenging efficiency.
The middle position of the inner space of first dividing plate, 13 shells 1 is used for fixing dual-axle motor 2.First dividing plate 13 is fixed on the shell 1 in any suitable mode.Second partition 14, the 3rd dividing plate 15 are arranged on the both sides of first dividing plate 13 symmetrically, are fixed on first dividing plate 13 and the shell 1.First dividing plate 13, second partition 14 and the 3rd dividing plate 15 are detachable, so that machine intimate is loaded and unloaded and keeps in repair.
In addition, the thickness of first dividing plate 13 is greater than the thickness of second partition 14 and the 3rd dividing plate 15, perhaps the rigidity of first dividing plate 13 material that adopts is greater than the rigidity of second partition 14 and the 3rd dividing plate 15 material that adopts, thereby can bear the bigger vibration that causes by dual-axle motor 2, simultaneously can also be under the prerequisite that does not influence isolation and support effects, save raw material, reduce cost.
Dual-axle motor 2 is positioned at the central authorities of shell 1, and is fixed in the center of first dividing plate 13, and first turning cylinder 12 of dual-axle motor 2 and the rotor shaft direction of second turning cylinder 11 (direction A among Fig. 1) are perpendicular to the plane at first dividing plate, 13 places.First turning cylinder 12 and second turning cylinder 11 stretch into first air channel 21 and second air channel 22 symmetrically, and constant speed is rotated.In addition, the rotating speed of dual-axle motor 2 can be regulated, so that the rotating speed of first turning cylinder 12 and second turning cylinder 11 increases simultaneously or reduce, thereby satisfies the demand of different ventilation situations.In addition, adopt the design of a dual-axle motor to make whole apparatus structure compactness, volume is small and exquisite, and the thickness of whole device only is about 0.5 meter, can be installed in the narrow space such as toilet furred ceiling.
Two sizes, first centrifugal wind wheel 3 and second centrifugal wind wheel 4 that shape is identical are set respectively in first air channel 21 and second air channel 22, the rotor shaft direction of first centrifugal wind wheel 3 and second centrifugal wind wheel 4 (direction A among Fig. 1) is perpendicular to the plane at first dividing plate 13, second partition 14 and the 3rd dividing plate 15 places, and the rotating shaft of first centrifugal wind wheel 3 and second centrifugal wind wheel 4 is connected to first turning cylinder 12 and second turning cylinder 11 of dual-axle motor 2.First centrifugal wind wheel 3 and second centrifugal wind wheel, 4 preferred ABS (acrylonitrile-butadiene-styrene copolymer) wind wheels that adopt are to reduce mechanical noise and aerodynamic noise.
Two sizes, first volute 5 and second volute 6 that shape is identical also are set respectively in first air channel 21 and second air channel 22.First centrifugal wind wheel 3 and second centrifugal wind wheel 4 are separately positioned in first volute 5 and second volute 6.Along first centrifugal wind wheel, 3 axial directions (direction A among Fig. 1) the first volute air inlet 17 is set on first volute 5, the position of this first volute air inlet 17 is corresponding with the position of first centrifugal wind wheel 3, and promptly the first volute air inlet 17 and first centrifugal wind wheel 3 axially align.
Same, along second centrifugal wind wheel, 4 axial directions (direction A among Fig. 1) the second volute air inlet 16 is set on second volute 6, the position of this second volute air inlet 16 is corresponding with the position of second centrifugal wind wheel 4, and promptly the second volute air inlet 16 and second centrifugal wind wheel 4 axially align.The second volute air inlet 16 is identical with big or small essence with the shape of the first volute air inlet 17." shape is identical with big or small essence " in the present embodiment also comprises shape and the big or small situation that minute differences is arranged, the minute differences of shape and size does not influence the air capacity of amount of air drawn or discharge and flowing of air, thereby the air capacity of guaranteeing this device amount of air drawn and discharge equates.
Along first centrifugal wind wheel 3 direction radially the first volute air outlet 18 is set on first volute 5, along second centrifugal wind wheel 4 direction radially the second volute air outlet 19 is set on second volute 6, and in Fig. 1, the second volute air outlet 19 is positioned at the left side (towards the indoor) of dual-axle motor 2, and the first volute air outlet 18 is positioned at the right side (towards the outside) of dual-axle motor 2.The first volute air outlet 18 is identical with big or small essence with the shape of the second volute air outlet 19, and first volute 5 and second volute 6 can be exchanged.
As shown in Figure 2, the position that connects with the first volute air outlet 18 and the second volute air outlet 19 on shell 1 is provided with room air air outlet 8 and outdoor air air outlet 9 respectively.And, on the sidewall (indoor) relative of shell 1, room air air inlet 10 being set with room air air outlet 8, room air air inlet 10 is arranged in first air channel 21.Equally, on the sidewall (outside) relative of shell 1, outdoor air air inlet 7 is set with outdoor air air outlet 9, outdoor in air air inlet 7 be arranged in second air channel 22.
As shown in Figure 2, in the position of room air air outlet 8, room air air inlet 10, outdoor air air outlet 9 and the outdoor air air inlet 7 of shell 1 conduit 26,24,23,25 is set respectively, conduit 26,24,23,25 stretches out from shell 1. Conduit 23,24,25,26 all can be connected with the ventilation flexible pipe.
In order to realize symmetrical fully air intake and air-out with the holding chamber inside and outside air pressure balance, outdoor air air inlet 7 has identical shape of essence and size with room air air inlet 10; Outdoor air air outlet 9 also has identical shape of essence and size with room air air outlet 8, thereby has guaranteed the symmetry in air channel.Conduit 23,24,25,26 also has identical shape of essence and size.And the design of symmetrical line type is adopted in the air channel, and the air channel changes little, and air-flow is unobstructed, help air and suck symmetrically and discharge, and aerodynamic noise is little.
In addition, because room air air outlet 8, room air air inlet 10, outdoor air air outlet 9 and outdoor air air inlet 7 are separately positioned on the relative both sides of shell 1, therefore, wall can be close to when mounted in the other both sides of shell 1, thereby further saves installing space.Certainly, the setting of room air air outlet 8, room air air inlet 10, outdoor air air outlet 9 and outdoor air air inlet 7 is not limited to above-mentioned position, also can be arranged at other positions according to actual conditions, for example, outdoor air air inlet 7 also can be arranged on the downside of the shell 1 among Fig. 2, and room air air inlet 10 also can be arranged on upside of the shell 1 among Fig. 2 or the like.
In addition, the downside of the shell in Fig. 11 is provided with dismountable maintenance panel 20.In the time of should overhauling panel 20 and pull down, can keep in repair, thereby be convenient to the maintenance and the maintenance of device by the access hole on the machine casing 1.
When dual-axle motor 2 started, first turning cylinder 12 drove first centrifugal wind wheel 3 respectively with second turning cylinder 11 and rotates with identical speed simultaneously with second centrifugal wind wheel 4.Because the rotation of second centrifugal wind wheel 4, outdoor clean air is sucked by conduit 25 and outdoor air air inlet 7, shown in the arrow on Fig. 1 top, the air that is inhaled into enters second volute 6 by the second volute air inlet 16, and under the drive of second centrifugal wind wheel 4, discharge by the second volute air outlet 19, outdoor air air outlet 9 and conduit 23, thereby in the inlet chamber.
Equally, shown in the arrow of Fig. 1 bottom, because the rotation of first centrifugal wind wheel 3, indoor foul atmosphere is sucked by conduit 24 and room air air inlet 10, the air that is inhaled into enters first volute 5 by the first volute air inlet 17, and under the drive of first centrifugal wind wheel 3, drain into by the first volute air outlet 18, room air air outlet 8 and conduit 26 outdoor, thereby realize two-way ventilation.
Because bidirectional ventilated device of the present utility model adopts the design of essence symmetrical expression, not only dual-axle motor 2 is positioned at whole device central authorities, first air channel 21 is identical with big or small essence with second air channel, 22 shapes, and first dividing plate 13, second partition 14, the 3rd dividing plate 15, accessory etc. also can be symmetrical arranged as required, therefore can guarantee that the air capacity that sucks and discharge equates, guarantee that indoor and outdoor does not produce draught head, and can farthest reduce the vibration and the noise of device.
In addition, the dual-axle motor 2 of bidirectional ventilated device of the present utility model can be replaced by two identical motors that are arranged on symmetrically up and down on the dividing plate 13.
In addition, first dividing plate 13 of bidirectional ventilated device of the present utility model, second partition 14 and the 3rd dividing plate 15 also can replace with the dividing plate that a monoblock has a symmetrical profile structure, the thickness of this dividing plate middle body is greater than the thickness of other parts, and perhaps the central portion branch adopts the rigidity of the rigidity of material greater than material that other parts adopt.Described dual-axle motor 2 is fixed on the described middle body of described dividing plate.
More than, with reference to detailed or specific embodiment, describe the present invention, but those skilled in the art understand: can under the prerequisite that does not break away from spirit of the present invention and scope, carry out various changes and correction.
Claims (8)
1, a kind of bidirectional ventilated device comprises:
Shell (1), it has the indoor sidewall towards the indoor, and towards the outdoor sidewall of outside, room air air outlet (8) and outdoor air air inlet (7) are set on the described outdoor sidewall of described shell (1), outdoor air air outlet (9) and room air air inlet (10) are set on the described indoor sidewall of described shell (1);
Dividing plate (13,14,15), it is fixed in the described shell (1), the inner space of described shell (1) is divided into first air channel (21) and second air channel (22) of symmetry; And
Symmetry drive division (101);
It is characterized in that:
Described room air air outlet (8) and described room air air inlet (10) toward each other, described outdoor air air outlet (9) and described outdoor air air inlet (7) toward each other,
Described room air air outlet (8) is all identical with shape, the size of described outdoor air air outlet (9), and described room air air inlet (10) is all identical with shape, the size of described outdoor air air inlet (7).
2, ventilation unit according to claim 1 is characterized in that:
Described symmetrical drive division (101) comprising:
Dual-axle motor (2), it is fixed in the middle part of described dividing plate (13,14,15) and about the plane symmetry at described dividing plate (13,14,15) place, first turning cylinder (12) of described dual-axle motor (2) and the rotor shaft direction of second turning cylinder (11) are perpendicular to the plane at described dividing plate (13,14,15) place;
First centrifugal wind wheel (3), it is positioned at described first air channel (21), and is connected with first turning cylinder (12) of described dual-axle motor (2), rotates under the driving of described dual-axle motor (2);
Second centrifugal wind wheel (4), it is positioned at described second air channel (22), and is connected with second turning cylinder (11) of described dual-axle motor (2), rotates under the driving of described dual-axle motor (2);
First volute (5), it is arranged on the outside of described first centrifugal wind wheel (3), and described first volute (5) is provided with the first volute air inlet (17) on described first centrifugal wind wheel (3) axial direction, the first volute air outlet (18) is being set in the radial direction, and the described first volute air outlet (18) connects with described room air air outlet (8); And
Second volute (6), it is arranged on the outside of described second centrifugal wind wheel (4), and described second volute (6) is provided with the second volute air inlet (16) on described second centrifugal wind wheel (4) axial direction, the second volute air outlet (19) is being set in the radial direction, and the described second volute air outlet (19) connects with described outdoor air air outlet (9).
3, ventilation unit according to claim 2 is characterized in that:
The described first volute air outlet (18) is of similar shape with the described second volute air outlet (19) and size,
The described first volute air inlet (17) is of similar shape with the described second volute air inlet (16) and size.
4, ventilation unit according to claim 1 is characterized in that:
Described dividing plate (13,14,15) is made of detachable first dividing plate (13), second partition (14) and the 3rd dividing plate (15), described dual-axle motor (2) is fixed on described first dividing plate (13), and described second partition (14) and the 3rd dividing plate (15) are arranged on the both sides of described first dividing plate (13) symmetrically.
5, ventilation unit according to claim 4 is characterized in that:
The thickness of described first dividing plate (13) is greater than the thickness of described second partition (14) and the 3rd dividing plate (15), and the rigidity of perhaps described first dividing plate (13) material that adopts is greater than the rigidity of described second partition (14) and the 3rd dividing plate (15) material that adopts.
6, ventilation unit according to claim 1 is characterized in that:
Described dividing plate (13,14,15) is an entire plate, and the thickness of its middle body is greater than the thickness of other parts, and perhaps the central portion branch adopts the rigidity of the rigidity of material greater than material that other parts adopt.
7, ventilation unit according to claim 6 is characterized in that:
Described dual-axle motor (2) is fixed on the described middle body of described dividing plate, and described dividing plate has the symmetrical profile structure.
8, ventilation unit according to claim 1 is characterized in that:
Described shell (1) is provided with dismountable maintenance panel (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200682842U CN201407776Y (en) | 2009-03-02 | 2009-03-02 | Bidirectional ventilation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200682842U CN201407776Y (en) | 2009-03-02 | 2009-03-02 | Bidirectional ventilation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201407776Y true CN201407776Y (en) | 2010-02-17 |
Family
ID=41678711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200682842U Expired - Fee Related CN201407776Y (en) | 2009-03-02 | 2009-03-02 | Bidirectional ventilation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201407776Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912977A (en) * | 2012-12-28 | 2014-07-09 | 广东松下环境***有限公司北京分公司 | Heat exchange device |
| CN103925646A (en) * | 2014-03-03 | 2014-07-16 | 台州市黄岩天益模具厂 | Indoor air and outdoor air circulating purifier |
| CN104033404A (en) * | 2014-06-19 | 2014-09-10 | 徐荣兰 | Ventilation device |
| CN105928184A (en) * | 2016-06-15 | 2016-09-07 | 珠海格力电器股份有限公司 | Fixing assembly of total heat exchanger, air duct partition plate and motor support |
| CN106122049A (en) * | 2016-08-30 | 2016-11-16 | 南京朗得科技有限公司 | The concave centrifugation blade assembly of miniaturization Special air conditioner for elevator |
| CN106123433A (en) * | 2016-06-27 | 2016-11-16 | 张维秀 | A kind of guide rail improving refrigerator air-flow |
| CN106247609A (en) * | 2016-10-09 | 2016-12-21 | 珠海格力电器股份有限公司 | Base, two-way air inlet device and air conditioner |
| CN106352468A (en) * | 2015-07-17 | 2017-01-25 | 张国基 | Ventilation device |
| CN111207477A (en) * | 2020-01-08 | 2020-05-29 | 王景花 | Building energy-saving ventilation device and ventilation method thereof |
| WO2021139259A1 (en) * | 2020-04-14 | 2021-07-15 | 南京御风环境技术有限公司 | Ceiling fresh air ventilator |
-
2009
- 2009-03-02 CN CN2009200682842U patent/CN201407776Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912977A (en) * | 2012-12-28 | 2014-07-09 | 广东松下环境***有限公司北京分公司 | Heat exchange device |
| CN103912977B (en) * | 2012-12-28 | 2018-03-23 | 广东松下环境***有限公司北京分公司 | Heat-exchange device |
| CN103925646A (en) * | 2014-03-03 | 2014-07-16 | 台州市黄岩天益模具厂 | Indoor air and outdoor air circulating purifier |
| CN104033404A (en) * | 2014-06-19 | 2014-09-10 | 徐荣兰 | Ventilation device |
| CN106352468A (en) * | 2015-07-17 | 2017-01-25 | 张国基 | Ventilation device |
| CN106352468B (en) * | 2015-07-17 | 2019-06-14 | 张国基 | Ventilation device |
| CN105928184A (en) * | 2016-06-15 | 2016-09-07 | 珠海格力电器股份有限公司 | Fixing assembly of total heat exchanger, air duct partition plate and motor support |
| CN105928184B (en) * | 2016-06-15 | 2019-08-06 | 珠海格力电器股份有限公司 | Fixing assembly of total heat exchanger, air duct partition plate and motor support |
| CN106123433A (en) * | 2016-06-27 | 2016-11-16 | 张维秀 | A kind of guide rail improving refrigerator air-flow |
| CN106122049A (en) * | 2016-08-30 | 2016-11-16 | 南京朗得科技有限公司 | The concave centrifugation blade assembly of miniaturization Special air conditioner for elevator |
| CN106247609A (en) * | 2016-10-09 | 2016-12-21 | 珠海格力电器股份有限公司 | Base, two-way air inlet device and air conditioner |
| CN106247609B (en) * | 2016-10-09 | 2022-02-01 | 珠海格力电器股份有限公司 | Base, two-way air inlet device and air conditioner |
| CN111207477A (en) * | 2020-01-08 | 2020-05-29 | 王景花 | Building energy-saving ventilation device and ventilation method thereof |
| WO2021139259A1 (en) * | 2020-04-14 | 2021-07-15 | 南京御风环境技术有限公司 | Ceiling fresh air ventilator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201407776Y (en) | Bidirectional ventilation device | |
| CN107327941B (en) | Indoor unit of vertical air conditioner and air conditioner | |
| WO2009021356A1 (en) | Centrifugal air blower and fresh air device having the blower | |
| WO2019061954A1 (en) | Vertical air conditioner | |
| CN101101008B (en) | Centrifugal fan and aeration device with indoor air purifying function | |
| CN102374584B (en) | Improve the indoor set of airflow circulating and adopt the hanging air conditioner of this indoor set | |
| CN107314451A (en) | Air treatment module and air conditioner | |
| CN105423429A (en) | Ultrathin wall-mounted air conditioner indoor unit | |
| CN107525169A (en) | Air treatment module and air conditioner | |
| CN100374791C (en) | Heat exchanging system of ventilating equipment | |
| EP3401546A1 (en) | Axial fan assembly and motor home air-conditioner using same | |
| CN207146555U (en) | Air treatment module and air conditioner | |
| CN206753941U (en) | A kind of centrifugal laboratory hood of low noise | |
| CN209341508U (en) | A kind of vertical new blower | |
| CN213088310U (en) | Take cold of function of taking a breath to hold | |
| CN209415584U (en) | Air conditioner | |
| CN106152363A (en) | Air flow exchanging device | |
| CN209415588U (en) | Air conditioner | |
| CN210080322U (en) | Automatic air-drying and cooling device for rubber belt | |
| CN210688460U (en) | Air conditioner indoor unit and air conditioner | |
| CN207094936U (en) | Wall-mounted new blower fan | |
| CN204610325U (en) | A kind of mute energy-saving ventilator | |
| CN206528478U (en) | A kind of mechanically useless arranging device of rail vehicle | |
| CN206487649U (en) | A kind of outer rotor centrifugal ventilator for air conditioner | |
| CN219674380U (en) | Heat recovery dehumidification equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20130302 |