CN110789297A - New trend case - Google Patents
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- CN110789297A CN110789297A CN201911247815.9A CN201911247815A CN110789297A CN 110789297 A CN110789297 A CN 110789297A CN 201911247815 A CN201911247815 A CN 201911247815A CN 110789297 A CN110789297 A CN 110789297A
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- air
- air inlet
- door
- double
- fresh air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00457—Ventilation unit, e.g. combined with a radiator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
- B60H1/00828—Ventilators, e.g. speed control
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- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a fresh air box which comprises a fresh air box shell, a double-layer air inlet switching mechanism and an actuator, wherein the double-layer air inlet switching mechanism is arranged on the fresh air box shell; the fresh air box shell is provided with an outer air inlet and an inner air inlet which are adjacent; the double-layer air inlet switching mechanism is arranged in the new air box shell and is positioned in an air channel corresponding to the outer air inlet and the inner air inlet; the double-layer air inlet switching mechanism comprises an inner air door, an outer air door, a layered turbulent air door and a transmission mechanism, wherein the inner air door and the outer air door are connected with the layered turbulent air door through the transmission mechanism, and the inner air door and the outer air door are used for controlling the opening degrees of an outer air inlet and an inner air inlet; the actuator is connected with the transmission mechanism. The actuator drives the inner and outer air doors to rotate, so that the opening degrees of the outer air inlet and the inner air inlet are adjusted, and the switching of inner air and outer air and the mixing ratio of inner air and outer air are realized; the actuator drives the layered turbulence air door to rotate at the same time, the layered turbulence air door divides air inlet into two parts, double-layer flow air inlet is realized, the structure is simple and compact, the assembly is convenient, and the product cost and the space volume are reduced.
Description
Technical Field
The invention relates to the technical field of automobile air conditioners, in particular to a fresh air box.
Background
With the increasing requirements of new energy vehicles on energy conservation, comfort, safety and cost control, the new energy vehicles are changed from free heating heat sources of traditional fuel vehicles into power consumption heat sources of electric heating PTC and heat pump heating of new energy vehicles; in order to reduce the ventilation loss of the air conditioner, the technique of introducing the external air into the internal air or the double-layer air is adopted.
The technical scheme of mixing the outer gas into the inner gas has the advantages that when the outer gas is mixed into the inner gas, the glass of the front window is fogged due to overhigh humidity when the proportion of the inner gas exceeds 20 percent, so that the safety is influenced, and the energy-saving effect of mixing 20 percent of the inner gas into the outer gas is not ideal;
a double-layer air inlet technology double-impeller structure new air box is disclosed in Chinese patent CN2018205991644, for example, an inner and outer air double-layer air flow automobile air conditioner air inlet box assembly is disclosed, the structure of the new air box is shown in FIG. 6, the layering effect is good, however, the opening degrees of a fresh air inlet and an inner circulation air inlet are respectively controlled through two air doors, and two air channels are separately arranged, so that the new air box occupies a large space, is complex in structure and is high in cost.
The single-impeller air inlet advanced technology has the disadvantages of more air doors, complex structure, large occupied space, higher cost and incapability of realizing single-layer universality.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a fresh air box to solve the problems of complex structure and large occupied space of the fresh air box in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fresh air box comprises a fresh air box shell, a double-layer air inlet switching mechanism and an actuator;
an outer air inlet and an inner air inlet are adjacently arranged on the shell of the fresh air box;
the double-layer air inlet switching mechanism is arranged in the new air box shell and is positioned in an air channel corresponding to the outer air inlet and the inner air inlet;
the double-layer air inlet switching mechanism comprises an inner air door, an outer air door, a layered turbulence air door and a transmission mechanism, the inner air door, the outer air door and the layered turbulence air door are connected through the transmission mechanism, and the inner air door and the outer air door are used for controlling the opening degrees of an outer air inlet and an inner air inlet;
the actuator is connected with the transmission mechanism.
The fresh air box provided by the invention drives the rotation of the inner and outer air doors through the actuator, so that the opening degrees of the outer air inlet and the inner air inlet are adjusted, the switching of inner and outer air and the mixing ratio of inner air and outer air are realized, when the inner air inlet is completely closed, the outer air inlet is completely opened, when the outer air inlet is completely closed, the inner air inlet is completely opened, the outer air inlet and the inner air inlet can be partially opened by adjusting the rotation of the inner and outer air doors, and the mixing ratio of outer air and inner air can be controlled by controlling the opening degrees of the outer air inlet and the inner air inlet. The layered turbulence air door is driven to rotate when the actuator drives the inner and outer air doors to rotate, the layered turbulence air door is used for dividing the air inlet into two parts, double-layer flow air inlet is realized, and the turbulence is controlled in a layered proportion mode, so that the advantages of energy conservation, glass fogging prevention and compact structure are achieved. Compared with the prior art that the two air doors are arranged to respectively control the opening degrees of the outer air inlet and the inner air inlet and the two air channels are arranged to realize layering, the structure of the invention is simpler, the assembly is convenient, the volume is smaller, the cost is low, and the single-layer flow and double-layer flow universality can be realized.
Further, drive mechanism includes the transmission unit of two symmetries, every the transmission unit includes fixed bolster, driving gear, driven gear, transmission shaft, the transmission shaft with inside and outside air door and driving gear fastening connection, driven gear install in on the fixed bolster with in its complex recess and with driving gear engagement, driven gear with layering vortex air door one end is connected, the fixed bolster install in on the inner wall of new bellows casing.
Double-deck air inlet switching mechanism installs in new bellows casing through two fixed bolsters, executor and rotation axis connection, and the executor control axis of rotation rotates, and the transmission shaft drives inside and outside air door and driving gear synchronous revolution, and the driving gear drives driven gear and rotates, and driven gear drives the inside and outside air door rotation direction's of layering vortex air door antiport.
Further, the layering vortex air door include the pivot and install in epaxial wind door plant rotates, the equal fixedly connected with in pivot both ends driven gear, driven gear reaches pivot both ends are hollow structure, central point puts and is provided with the bracing piece in the recess on the fixed bolster, the bracing piece passes driven gear and inserts in the one end of pivot.
Further, the fixed bolster is the arc, inside at interior outer air door both ends all is provided with fan-shaped recess, the fixed bolster install in the fan-shaped recess, still be provided with spacing lug in the recess on the fixed bolster, be provided with on the driven gear with the arc wall that spacing lug matches.
Through set up spacing lug in the recess on the fixed bolster, when the layering vortex air door rotated to one side and turned to the biggest, spacing lug will lean on the one end inner wall of arc wall on driven gear, realize spacing to layering vortex air door.
Furthermore, the air door of the inside and outside air is of a V-shaped groove frame structure and comprises an arc-shaped curved plate and fan-shaped supporting plates symmetrically arranged at two ends of the arc-shaped curved plate, and the radian of the arc-shaped curved plate is matched with the radians of the air inlet of the outside air and the air inlet of the inside air.
Furthermore, a filter element installation groove for installing a filter is arranged in the fresh air box shell and below the double-layer air inlet switching mechanism.
Further, still include the filter, the filter install in the filter core mounting groove, the notch department of filter core mounting groove is provided with the filter core lid, and the filter is used for purifying the interior outer gas that gets into new bellows.
Further, still include double-layer flow spoiler subassembly, double-layer flow spoiler subassembly install in just be located in the new trend bellows casing filter core mounting groove below, wind channel in the inside constitution of double-layer flow spoiler subassembly, just double-layer flow spoiler subassembly lower extreme opening is circular, double-layer flow spoiler subassembly with the space between the new trend bellows casing constitutes outer wind channel.
The double-layer flow spoiler component is arranged based on the research on the characteristic of the internal flow field of the air blower when the single-impeller centrifugal fan works, and the characteristic is that air circularly entering from the center of the air inlet is blown out from the lower half part of the impeller blade along the impeller wheel disc, and air circularly entering from the outer circle of the air inlet is blown out from the upper half part of the impeller blade along the inner wall surface of the impeller inlet ring; the double-layer flow spoiler assembly is introduced based on the characteristic consideration, so that the air inlet separation of the inner ring and the outer ring of the air inlet of the fan is realized, namely the inner air channel and the outer air channel are corresponding.
Further, the upper end opening of double-layer flow spoiler subassembly is square and corresponds one side of layering vortex air door, the inside brace rod that is provided with of its lower extreme prevents that double-layer flow spoiler subassembly from being out of shape under the effect of wind pressure and fan wheel's blade interference friction from leading to the trouble.
Furthermore, the dual-layer flow spoiler assembly is formed by fixedly connecting a left dual-layer flow spoiler and a right dual-layer flow spoiler, and the fresh air box shell is formed by fixedly connecting a left fresh air box shell and a right fresh air box shell.
Advantageous effects
The invention provides a fresh air box, wherein an actuator drives an inner air door and an outer air door to rotate, so that the opening degrees of an outer air inlet and an inner air inlet are adjusted, the switching of inner air and outer air and the mixing ratio of inner air and outer air are realized, when the inner air inlet is completely sealed, the outer air inlet is completely opened, when the outer air inlet is completely sealed, the inner air inlet is completely opened, the outer air inlet and the inner air inlet can be partially opened by adjusting the rotation of the inner air door and the outer air door, and the mixing ratio of the outer air and the inner air can be controlled by controlling the opening degrees of the outer air inlet and the inner air inlet. The layered turbulence air door is driven to rotate when the actuator drives the inner and outer air doors to rotate, the layered turbulence air door is used for dividing the air inlet into two parts, double-layer flow air inlet is realized, and the turbulence is controlled in a layered proportion mode, so that the advantages of energy conservation, glass fogging prevention and compact structure are achieved. Compared with the prior art that the two air doors are arranged to respectively control the opening degrees of the outer air inlet and the inner air inlet and the two air channels are arranged to realize layering, the structure of the invention is simpler and more compact, the assembly is convenient, the product cost and the space volume are reduced, and the single-layer and double-layer flow universality can be realized.
Drawings
FIG. 1 is a schematic structural view of a fresh air box according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the three operating mode positions of the embodiment provided in FIG. 1;
FIG. 3 is a schematic structural diagram of the double-deck intake air switching mechanism of the embodiment provided in FIG. 1;
FIG. 4 is a schematic view of the mounting bracket and the layered spoiler damper assembly of the embodiment provided in FIG. 3;
FIG. 5 is a schematic structural view of the dual-layer flow spoiler assembly of the embodiment provided in FIG. 1;
fig. 6 is a schematic structural view of a dual-impeller fresh air box in a dual-layer flow air intake technology in the prior art.
In the figure: 1-a fresh air box shell, 11-a fresh air box right shell, 12-a fresh air box left shell, 13-an outer air inlet, 14-an inner air inlet, 2-an actuator, 3-a double-layer air inlet switching mechanism, 31-an inner air outlet and an outer air outlet, 32-a layered spoiler air door, 4-a filter, 5-a filter element cover, 6-a double-layer flow spoiler component, 61-a left double-layer flow spoiler, 62-a right double-layer flow spoiler, 63-a support rib, 71-a transmission shaft, 72-a driving gear, 73-a fixed bracket, 74-a limit lug, 75-a driven gear and 76-a support rod.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 5, an embodiment of the present invention provides a fresh air box, which includes a fresh air box housing 1, a double-layer intake switching mechanism 3, and an actuator 2;
an outer air inlet 13 and an inner air inlet 14 are adjacently arranged on the fresh air box shell 1;
the double-layer air inlet switching mechanism 3 is arranged in the fresh air box shell 1 and is positioned in an air channel corresponding to the outer air inlet 13 and the inner air inlet 14;
the double-layer air inlet switching mechanism 3 comprises an inner air door 31, an outer air door 31, a layered turbulent air door 32 and a transmission mechanism, wherein the inner air door 31 and the outer air door 31 are connected with the layered turbulent air door 32 through the transmission mechanism, and the inner air door 31 and the outer air door 31 are used for controlling the opening degrees of the outer air inlet 13 and the inner air inlet 14;
the actuator 2 is connected with the transmission mechanism.
According to the fresh air box provided by the invention, the actuator 2 drives the inner and outer air doors 31 to rotate, so that the opening degrees of the outer air inlet 13 and the inner air inlet 14 are adjusted, the switching of inner and outer air and the mixing ratio of inner air and outer air are realized, when the inner air inlet 14 is completely sealed, the outer air inlet 13 is completely opened, when the outer air inlet 13 is completely sealed, the inner air inlet 14 is completely opened, the outer air inlet 13 and the inner air inlet 14 can be partially opened by adjusting the rotation of the inner and outer air doors 31, and the mixing ratio of outer air and inner air can be controlled by controlling the opening degrees of the outer air inlet 13 and the inner air inlet 14. When the actuator 2 drives the inner air door 31 and the outer air door 31 to rotate, the layered turbulent air door 32 is driven to rotate at the same time, the layered turbulent air door 32 is used for dividing the air inlet into two parts, double-layer flow air inlet is realized, and the turbulent flow is controlled in a layered proportion mode; fig. 2 provides a schematic structural diagram of three operating states, wherein a in fig. 2 represents that the operating state is an all-internal-gas operating state, b in fig. 2 represents that the operating state is an air intake state in which the ratio of internal air to external air is 50%, and c in fig. 2 represents that the operating state is an all-external-gas operating state. Compared with the prior art that the two air doors are arranged to respectively control the opening degrees of the outer air inlet 13 and the inner air inlet 14 and the two air channels are arranged to realize layering, the structure of the invention is simpler, the assembly is convenient, the volume is smaller, the cost is low, and the single-layer and double-layer flow universality can be realized.
As shown in fig. 3 and 4, in this embodiment, the transmission mechanism includes two symmetrical transmission units, each of the transmission units includes a fixed support 73, a driving gear 72, a driven gear 75, and a transmission shaft 71, the transmission shaft 71 sequentially fastens and connects the inner and outer air dampers 31 and the driving gear 72, during specific implementation, the transmission shaft 71 can select a non-circular shaft, the inner and outer air dampers 31 and the driving gear 72 are provided with mounting holes corresponding to the non-circular shaft, the driven gear 75 is installed in a groove on the fixed support 73, which is matched with the fixed support, and engaged with the driving gear 72, the driven gear 75 is connected with one end of the layered turbulent damper 32, and the fixed support 73 is installed on the inner wall of the fresh air box housing 1.
Double-deck switching mechanism 3 that admits air installs in new trend case casing 1 through two fixed bolsters 73, accessible fix with screw between fixed bolster 73 and the new trend case casing 1, executor 2 passes through fix with screw and installs on new trend case casing 1, executor 2 is connected with axis of rotation 71, executor 2 control axis of rotation 71 rotates, transmission shaft 71 drives inside and outside air door 31 and driving gear 72 synchronous revolution, driving gear 72 drives driven gear 75 and rotates, driven gear 75 drives the inside reverse rotation of outside air door 31 rotation direction of layering vortex air door 32.
The layered turbulent air door 32 comprises a rotating shaft and an air door plate arranged on the rotating shaft, the two ends of the rotating shaft are fixedly connected with the driven gear 75, the two ends of the driven gear 75 and the two ends of the rotating shaft are both of hollow structures, a supporting rod 76 is arranged in the center of a groove in the fixed support 73, and the supporting rod 76 penetrates through the driven gear 75 and is inserted into one end of the rotating shaft. In this other embodiment, the rotating shaft and the two-end driven gear 75 may be formed integrally. The inner and outer air door 31 is of a V-shaped groove frame structure and comprises an arc-shaped curved plate and fan-shaped support plates symmetrically arranged at two ends of the arc-shaped curved plate, and the radian of the arc-shaped curved plate is matched with the radians of the outer air inlet 13 and the inner air inlet 14. When the device is specifically implemented, baffle plates extending along the radial direction are arranged on two sides of the arc-shaped curved plate, and the baffle plates are used for limiting and strengthening the sealing property.
Preferably, the fixed bracket 73 is arc-shaped, the inner sides of the two ends of the inner and outer air door 31 are provided with fan-shaped grooves, the fixed bracket 73 is installed in the fan-shaped grooves, the grooves on the fixed bracket 73 are also provided with limit lugs 74, and the driven gear 75 is provided with an arc-shaped groove matched with the limit lugs 74.
Through set up spacing lug 74 in the recess on fixed bolster 73, when layering vortex air door 32 rotated to one side and turned to the biggest, spacing lug 74 will support and lean on driven gear 75 goes up the one end inner wall of arc wall, realizes spacing to layering vortex air door 32.
As shown in fig. 1 and 2, in the present embodiment, a filter element installation groove for installing a filter 4 is provided in the fresh air box housing 1 and below the double-layer air intake switching mechanism 3. Install filter 4 in the filter core mounting groove, the notch department in filter core mounting groove is provided with filter core lid 5, and filter 4 is used for purifying the interior outer gas that gets into new bellows. The filter 4 can be inserted or withdrawn by opening the filter element cover 5.
In this embodiment, the fresh air box further includes a dual-layer flow spoiler assembly 6, as shown in fig. 5, the dual-layer flow spoiler assembly 6 is installed in the fresh air box housing 1 and located below the filter element installation groove, an inner air duct is formed inside the dual-layer flow spoiler assembly 6, an opening at the lower end of the dual-layer flow spoiler assembly 6 is circular, and an outer air duct is formed in a space between the dual-layer flow spoiler assembly 6 and the fresh air box housing 1. The upper end opening of double-layer flow spoiler subassembly 6 is square and corresponds one side of layering vortex air door 32, the inside brace rod 63 that is provided with of its lower extreme, in this embodiment, brace rod 63 comprises the ring portion at center and a plurality of supporting parts that outwards extend along ring portion radial direction, prevents that double-layer flow spoiler subassembly 6 from warping under the effect of wind pressure and fan wheel's blade interference friction leads to the trouble.
When the double-layer flow spoiler assembly 6 is used, the air circularly entering from the center of the air inlet is blown out from the lower half part of the impeller blade along the impeller wheel disc, and the air circularly entering from the outer ring of the air inlet is blown out from the upper half part of the impeller blade along the inner wall surface of the impeller inlet ring; the double-layer flow spoiler assembly 6 is introduced based on the characteristic, the air inlet and the air outlet of the inner ring and the outer ring of the air inlet of the fan are separated, namely corresponding to the inner air duct and the outer air duct, and a middle partition plate is additionally arranged on the central plane of the outlet of the impeller in the volute of the fan to divide blown air.
In specific implementation, the dual-layer flow spoiler assembly 6 is formed by fixedly connecting a left dual-layer flow spoiler 61 and a right dual-layer flow spoiler 62, and the fresh air box housing 1 is formed by fixedly connecting a fresh air box left housing 12 and a fresh air box right housing 11. The fixed connection mode in this scheme includes but not limited to connection modes such as screw, leech card, trip.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A fresh air box is characterized by comprising a fresh air box shell, a double-layer air inlet switching mechanism and an actuator;
an outer air inlet and an inner air inlet are adjacently arranged on the shell of the fresh air box;
the double-layer air inlet switching mechanism is arranged in the new air box shell and is positioned in an air channel corresponding to the outer air inlet and the inner air inlet;
the double-layer air inlet switching mechanism comprises an inner air door, an outer air door, a layered turbulence air door and a transmission mechanism, the inner air door, the outer air door and the layered turbulence air door are connected through the transmission mechanism, and the inner air door and the outer air door are used for controlling the opening degrees of an outer air inlet and an inner air inlet;
the actuator is connected with the transmission mechanism.
2. The fresh air box according to claim 1, wherein the transmission mechanism comprises two symmetrical transmission units, each of the transmission units comprises a fixed support, a driving gear, a driven gear and a transmission shaft, the transmission shaft is fixedly connected with the inner and outer air doors and the driving gear, the driven gear is mounted in a groove matched with the fixed support and meshed with the driving gear, the driven gear is connected with one end of the layered turbulent air door, and the fixed support is mounted on the inner wall of the fresh air box shell.
3. The fresh air box according to claim 2, wherein the layered turbulent air door comprises a rotating shaft and a door plate installed on the rotating shaft, the two ends of the rotating shaft are fixedly connected with the driven gear, the two ends of the driven gear and the rotating shaft are both hollow structures, a support rod is arranged in a central position in a groove in the fixing support, and the support rod penetrates through the driven gear and is inserted into one end of the rotating shaft.
4. The fresh air box as claimed in claim 3, wherein the fixing bracket is arc-shaped, fan-shaped grooves are formed on the inner sides of the two ends of the inside and outside air dampers, the fixing bracket is mounted in the fan-shaped grooves, limiting lugs are further arranged in the grooves on the fixing bracket, and arc-shaped grooves matched with the limiting lugs are formed on the driven gear.
5. The fresh air box as claimed in claim 1, wherein the inside and outside air dampers are of a V-shaped frame structure and comprise a curved plate and fan-shaped support plates symmetrically arranged at two ends of the curved plate.
6. The fresh air box as claimed in any one of claims 1 to 5, wherein a filter element mounting groove for mounting a filter is provided in the fresh air box housing below the double-layer air inlet switching mechanism.
7. The fresh air box as claimed in claim 6, further comprising a filter, wherein the filter is installed in the filter mounting groove, and a filter cover is arranged at a notch of the filter mounting groove.
8. The fresh air box of claim 6 further comprising a dual-layer flow spoiler assembly, the dual-layer flow spoiler assembly being mounted in the fresh air box housing and located below the filter element mounting groove, the dual-layer flow spoiler assembly forming an inner air duct therein, the dual-layer flow spoiler assembly having a circular lower end opening, the dual-layer flow spoiler assembly and the fresh air box housing forming an outer air duct therebetween.
9. The fresh air box as claimed in claim 8, wherein the upper end opening of the double-layer flow spoiler assembly is square and corresponds to one side of the layered spoiler damper, and a support rib is provided inside the lower end thereof.
10. The new wind box according to claim 8, wherein the dual-layer flow spoiler assembly is formed by fixedly connecting a left dual-layer flow spoiler and a right dual-layer flow spoiler, and the new wind box housing is formed by fixedly connecting a left new wind box housing and a right new wind box housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911247815.9A CN110789297A (en) | 2019-12-09 | 2019-12-09 | New trend case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911247815.9A CN110789297A (en) | 2019-12-09 | 2019-12-09 | New trend case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110789297A true CN110789297A (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911247815.9A Pending CN110789297A (en) | 2019-12-09 | 2019-12-09 | New trend case |
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| Country | Link |
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| CN (1) | CN110789297A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780390A (en) * | 2020-07-13 | 2020-10-16 | 魏子丰 | Diversified wind-guiding air conditioner auxiliary assembly |
-
2019
- 2019-12-09 CN CN201911247815.9A patent/CN110789297A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780390A (en) * | 2020-07-13 | 2020-10-16 | 魏子丰 | Diversified wind-guiding air conditioner auxiliary assembly |
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