CN115008967A - Air supply mode improved type double-layer flow air-conditioning box assembly for internal air and external air - Google Patents
Air supply mode improved type double-layer flow air-conditioning box assembly for internal air and external air Download PDFInfo
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- CN115008967A CN115008967A CN202210535150.7A CN202210535150A CN115008967A CN 115008967 A CN115008967 A CN 115008967A CN 202210535150 A CN202210535150 A CN 202210535150A CN 115008967 A CN115008967 A CN 115008967A
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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
- B60H1/00007—Combined heating, ventilating, or cooling devices
- B60H1/00021—Air flow details of HVAC devices
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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
- B60H1/00007—Combined heating, ventilating, or cooling devices
- B60H1/00021—Air flow details of HVAC devices
- B60H2001/00078—Assembling, manufacturing or layout details
- B60H2001/00092—Assembling, manufacturing or layout details of air deflecting or air directing means inside the device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
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Abstract
The invention relates to an air supply mode improved type internal and external air double-layer flow air-conditioning box assembly which comprises an air supply box structure, a box body volute structure and a blower structure; the air supply box structure comprises an air conditioner upper box, an external circulation air door mounting frame, an air filter element, an internal circulation air door and an internal circulation air door mounting frame, wherein an outdoor air inlet and an indoor air inlet are respectively arranged on the two air door mounting frames; the box body volute structure comprises a box body upper volute, a volute partition plate and a box body lower volute, and exhaust ports are formed in the box body upper volute and the box body lower volute; the blower structure comprises a blower impeller, a blower motor and a motor shell supporting plate; the blower impeller consists of an upper impeller and a lower impeller, and a middle clapboard is arranged between the upper impeller and the lower impeller; the periscope type air inlet pipe fitting is inserted into an upper impeller of the air blower. The invention adopts the periscope type air inlet pipe fitting to form gas shunting, thereby realizing the reduction of the volume of the air conditioning box and the effective utilization of the space volume of the air conditioning box.
Description
Technical Field
The invention belongs to the technical field of automobile air conditioners, and particularly relates to an air supply mode improved type double-layer flow air conditioner box assembly with internal air and external air.
Background
The problem of improving the energy utilization rate of the automobile is more and more prominent, and the key problem of improving the heat management efficiency of the automobile is the point. Air conditioners are the core component of the thermal management system of the automobile, so in order to improve the thermal management efficiency, a double-layer flow blower technology is developed, for example, japanese patent discloses a blower unit of a two-layer air conditioner for a vehicle. As shown in fig. 1, the technical principle is as follows: indoor air entering an air inlet box body 9 of an air conditioner from an indoor air inlet 1 passes through a filter element 8 and a lower fan 4 of a blower, and is sent into an air supply channel 5 of the air conditioner; outdoor fresh cold air entering an air inlet box body 9 of the air conditioner from an outdoor air inlet 2 passes through a filter element 8 and an upper fan 3 of a blower, and is sent into an air supply channel 6 of the air conditioner box; the intake amount of the indoor air and the intake amount of the outdoor air are controlled by the damper 7. The indoor air and the outdoor are separated by the partition board in the air blower and the volute to be conveyed and flow, the temperature of the outdoor air is low, the defrosting and demisting efficiency by the outdoor air is high in winter, meanwhile, the temperature of the indoor air is high, due to the design of double-layer flow, the air conditioner can not be blown to the feet due to the mixing of the outdoor air in the air conditioner, the temperature of the air outlet of the blowing head is reduced, and the energy utilization rate is reasonably improved.
However, the air-conditioning air inlet box structure with the double-layer flow blower in the current market has large volume, and the main performance is that the size of the air inlet box structure is large in the height direction and the radial dimension, so that the air inlet box structure cannot be widely applied to passenger vehicles. The air inlet box structure of the double-layer flow blower air conditioner in the current market has the following defects:
1. the radial dimension and the height direction dimension of the air conditioner box body of the blower are overlarge.
2. In order to meet the requirement of automobile boundary assembly, the selection of the impeller of the air blower is greatly limited due to the overlarge size of the box body, the air blower with the large radial size cannot be selected, the air quantity of the double-layer flow air blower is limited, and the application range is greatly limited.
3. Too big box leads to the increase in weight of material object appearance spare, and then directly leads to the cost to increase, the consumption of raw and other materials energy.
4. The existing double-layer flow blower is complex in design, so that a welding process and an assembly process are used in the production process, and the cost is increased.
5. All there is the support structure who supports the filter core in the ripe single-layer flow air blower box in the current market, because of receiving the limit value of appearance height in the box of current existing double-layer flow air blower, do not have the structure of distinctive support filter core, adopt air blower oral area branch to support usually, this can play the supporting role to the filter core of small volume, but to the filter core of large volume, under the adverse circumstances of sleet humid weather, still have certain sunken problem, influence air intake efficiency.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the air-conditioning box which has the advantages that the radial size and the height are reduced, so that the volume of the air-conditioning box can be reduced, and the applicability of the air-conditioning box is improved; the double-layer flow blower structure is simplified, so that the industry can be simplified and the cost can be reduced; meanwhile, the air supply mode improved internal and external air double-layer flow air-conditioning box assembly capable of reducing air flow noise.
The above object of the present invention is achieved by the following technical solutions:
an air supply mode improved type double-layer flow air conditioner box assembly with internal air and external air comprises an air supply box structure, a box body volute structure connected with the air supply box structure and an air blower structure in the volute structure; the air supply box structure comprises an air conditioner upper box, an external circulation air door mounting frame, an air filter element, an internal circulation air door and an internal circulation air door mounting frame, wherein an outdoor air inlet and an indoor air inlet are respectively arranged on the external circulation air door mounting frame and the internal circulation air door mounting frame; the box body volute structure comprises a box body upper volute, a volute partition plate and a box body lower volute, and exhaust ports are formed in the box body upper volute and the box body lower volute; the blower structure comprises a blower impeller, a blower motor and a motor shell supporting plate; the blower impeller comprises upper and lower impellers, is provided with intermediate bottom between the two, its characterized in that:
the periscope type air inlet pipe fitting is composed of a flat horn-shaped head end air inlet pipe section with the upper portion along the transverse direction, a cylindrical middle air inlet pipe section along the vertical direction and a tail end air inlet pipe section in a conical pipe shape; an air inlet is arranged at the end part of the head end air inlet pipe section, vertical insertion blocks or slots are arranged on two side walls outside the air inlet, and an air outlet is arranged at the lower end of the tail end air inlet pipe section; the periscope type air inlet pipe fitting is inserted into an upper impeller cavity of the blower impeller from top to bottom, vertical insertion blocks or insertion slots on two sides of the periscope type air inlet pipe fitting are in insertion positioning fit with insertion slots or insertion block parts arranged on two side walls of an upper box body of an air conditioner, a bottom annular edge of the periscope type air inlet pipe fitting and a raised annular edge outside a central hole in a middle partition plate of the blower impeller are in clearance insertion fit along the radial direction, and a fit clearance is arranged between the bottom end face of the periscope type air inlet pipe fitting and the upper end face of the middle partition plate of the blower impeller; an inner annular air cavity is formed between the outer side surface of the periscope type air inlet pipe fitting and the inner annular surface of the upper impeller;
the upper part of the periscope type air inlet pipe fitting is contacted with the lower part of the air filter element, the lower edge of an air inlet pipe section at the head end of the periscope type air inlet pipe fitting is contacted with the bottom edge of an upper box of the air conditioner, so that the inner space between the lower end of the air filter element and the upper end of the blower impeller is divided into two independent air passing spaces which are an upper left air cavity and an upper right air cavity respectively;
an outer ring upper air cavity is formed between the outer side of the upper impeller and the inner side of the upper volute of the box body, an outer ring lower air cavity is formed between the outer side of the lower impeller and the inner side of the lower upper volute of the box body, and the outer ring upper air cavity and the outer ring lower air cavity are isolated by matching a volute partition plate with a middle partition plate of the blower impeller;
the upper left air cavity, the inner ring air cavity, the outer ring air cavity and the air outlet on the upper volute of the box body form a first air communicating channel; and a second air communication channel is formed by the upper right air cavity, the inner cavity of the periscope type air inlet pipe fitting, the inner cavity of the lower impeller, the outer ring lower air cavity and an air exhaust orifice on the lower volute of the box body.
Further: keep away from the one end external connection that the air inlet was connected with the strengthening rib on periscope formula air inlet pipe fitting's head end air inlet pipe section, the tip of strengthening rib and the inside wall of air conditioner box correspond the position and form the assistance-localization real-time with the cooperation structure of slot through the inserted block and be connected, the upper end of strengthening rib and air filter's lower extreme support contact. .
Further: periscope formula air inlet pipe fitting adopts injection molding integral type forming structure, and the material adopts PP.
Further: the radial fit clearance between the bottom ring edge of the periscope type air inlet pipe fitting and the edge of the raised ring outside the central hole on the middle partition plate of the blower impeller is 2-6 mm; the end face fit clearance between the bottom end face of the periscope type air inlet pipe fitting and the upper end face of the middle partition plate of the blower impeller is 2-4 mm.
The invention has the advantages and positive effects that:
1. this air conditioning box assembly adopts periscope formula air inlet pipe fitting to form inside and outside gas reposition of redundant personnel, make the inside from interior to exterior that the extrinsic cycle wind just was located the impeller from this air inlet pipe fitting's the outside wind-guiding, and the interior from interior to exterior wind-guiding is carried out in the interior from interior to exterior of intrinsic cycle wind following air inlet pipe fitting, the outside and the bottom wind-guiding space of air-blower impeller have been saved, can directly reduce air conditioning box casing radial dimension and height dimension, thereby can realize reducing the volume of air conditioning box, the space volume of effectively utilizing the air conditioning box has been realized.
2. During the periscope formula air inlet pipe spare that this air-conditioning box assembly adopted was pegged graft alone and is assembled the air-conditioning box casing, compare in current air blower structure need have solitary gaseous water conservancy diversion access structure between air-conditioning box and the air-blower spiral case, need have the air inlet space more than 50mm between lower impeller and the motor casing, the shape that the lower spiral case of air-blower still need design into the horn mouth in addition, the structure is complicated, and in this technical scheme, the air-blower structure has been simplified, mainly remain the air-blower impeller, make air-blower unit manufacturing simplify, and the cost is reduced.
3. Periscope formula air inlet pipe fitting in this air conditioning box assembly adopts the design of horn mouth integral type, has enlarged the area of admitting air, and periscope formula air inlet pipe fitting's centre air inlet pipe section integral type design has had fine guide effect to the air current moreover, and good air current direction can realize the laminar air flow when the air-blower low-grade amount of wind, and when the high-grade amount of wind of air-blower, obviously reduce the resistance that the air flows, help reducing the noise that the air conditioner during operation produced.
4. The bottom of the periscope type air inlet pipe fitting in the air conditioning box assembly is matched with the middle partition plate of the air blower in the radial direction and the end face, and the adoption of the laminated structure effectively inhibits indoor air from overflowing to the upper impeller of the air blower and reduces noise of air flow.
5. The air inlet inner side of the impeller under the blower adopts the plane port for air inlet, which is more beneficial to air flow and diffusion, the volume of the inner space of the impeller is increased, more air can be accommodated, and the problem of air whistling caused by the phenomenon of over-low air pressure at the local part due to insufficient volume when the impeller rotates at high speed is solved.
Drawings
FIG. 1 is a schematic cross-sectional view of a conventional air conditioning double side flow blower;
FIG. 2 is an exploded view of the air conditioner assembly of the present invention;
FIG. 3 is a schematic perspective view of a periscope-type air inlet pipe according to an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a periscope-type air inlet pipe according to a second embodiment of the present invention;
FIG. 5 is an assembled cross-sectional view of an air-conditioning assembly according to an embodiment of the present invention;
FIG. 6 is an assembled cross-sectional view of a hollow direction-adjusting assembly according to a second embodiment of the present invention;
FIG. 7 is a top view of the periscope-type air inlet pipe fitting and the air conditioning cabinet in a plug-in fit manner according to the second embodiment of the invention;
FIG. 8 is a perspective view of a blower wheel according to the present invention;
FIG. 9 is a longitudinal cross-sectional view of a blower wheel according to the present invention;
FIG. 10 is a partial schematic view of a stacked structure of the bottom of the periscope-type air inlet pipe and the intermediate partition plate according to the present invention;
FIG. 11 is a partial schematic view of the upper portion of the periscope type air inlet fitting of the present invention in inserted engagement with the upper box of the air conditioner;
FIG. 12 is a cross-sectional air flow diagram of the air conditioning cabinet assembly of the present invention in its operating mode;
FIG. 13 is a two-section air flow diagram of the air conditioning cabinet assembly operating mode of the present invention;
FIG. 14 is a three section air flow diagram of the mode of operation of the air conditioning box assembly of the present invention.
Detailed Description
The structure of the present invention will be further described by way of examples with reference to the accompanying drawings. It is to be understood that this embodiment is illustrative and not restrictive.
An improved air supply type double-layer air conditioner case assembly 10 with internal and external air, please refer to fig. 1-14, which mainly comprises an air supply case structure, a case volute structure connected with the air supply case structure, and a blower structure in the volute structure. The air supply box structure comprises an air conditioner upper box 15, an external circulation air door 12, an external circulation air door mounting frame 13, an air filter element 14, an internal circulation air door 22 and an internal circulation air door mounting frame 23, wherein an outdoor air inlet and an indoor air inlet are respectively arranged on the external circulation air door mounting frame and the internal circulation air door mounting frame and are used for respectively inputting outdoor air and indoor air. The box volute structure comprises a box upper volute 16, a volute partition plate 17 and a box lower volute 18, and exhaust holes are formed in the box upper volute and the box lower volute. The blower structure includes a blower wheel 11 (see fig. 8 and 9), a blower motor 20 and a motor housing blade 19. The blower wheel is composed of an upper impeller 112 and a lower impeller 111 with an intermediate partition 113 (see fig. 8 and 9) interposed therebetween. The connection mode of the parts is as follows:
outer circulation air door mounting bracket and inner loop air door mounting bracket are connected with the upper end left part and the right part of air conditioner upper box, and outer circulation air door and inner loop air door pass through the door-hinge and support respectively in outer circulation air door mounting bracket and inner loop air door mounting bracket to correspond with outdoor air inlet and indoor air inlet respectively. The air filter element is arranged in the upper air conditioner box and is positioned below the external circulation air door mounting frame and the internal circulation air door mounting frame and used for filtering external circulation air and internal circulation air. The upper volute of the box body, the volute partition plate and the lower volute of the box body are fixedly connected up and down in sequence, and the upper end of the upper volute of the box body is fixedly connected with the lower end of the upper box of the air conditioner. The motor casing supporting plate is fixedly connected with the lower volute of the box body, and the lower volute of the box body plays a role of the lower box of the air conditioner. The blower motor is fixedly arranged at the upper end of the motor shell supporting plate, the upper end of the blower motor is fixedly connected with the center of the blower impeller, the blower impeller is inserted into the volute structure of the box body, the middle partition plate of the blower impeller is matched with the volute partition plate (a micro-fit clearance is arranged between the upper end of the outer edge of the impeller partition plate and the lower end of the center hole of the volute partition plate, the clearance is generally 2-6mm, the blower impeller does not rub with the volute partition plate when rotating, and meanwhile, the upper and lower isolation effects of internal and external circulating air are realized), so that an outer ring upper air cavity is formed between the side surface of the volute on the box body and the outer side of the upper impeller, and an outer ring lower air cavity is formed between the side surface of the volute under the box body and the outer side surface of the lower impeller.
In order to realize gas diversion, in addition to the technical characteristics, the key points of the technical scheme are as follows:
a periscope air intake 21 is also included. The periscope type air inlet pipe fitting is integrally formed by injection molding parts, the process is mature in production, the requirements of actual batch production are met, and the injection molding parts are made of PP materials. The periscope type air inlet pipe fitting is composed of a flat horn-shaped head end air inlet pipe section 211 with the upper portion along the transverse direction, a cylindrical middle air inlet pipe section 212 along the vertical direction and a cone-shaped tail end air inlet pipe section 213. An air inlet 211a is arranged at the end part of the head end air inlet pipe section, and vertical insertion blocks 215 or insertion grooves are arranged on two side walls outside the air inlet. The lower end of the tail end air inlet pipe section is provided with an air outlet. The periscope type air inlet pipe fitting is inserted into an upper impeller cavity of the blower impeller from top to bottom, vertical insertion blocks or insertion slots on two sides of the periscope type air inlet pipe fitting are in insertion positioning fit with insertion slots 151 or insertion block parts arranged on two side walls of an upper box body of the air conditioner, after being inserted downwards to a proper position, the bottom ring edge of the periscope type air inlet pipe fitting and the raised ring edge 113a outside the central hole on the middle partition plate of the blower impeller form clearance insertion fit in the radial direction, the radial fit clearance is within a certain range, the optimum clearance value is 2mm-6mm after analysis and verification, if the radial fit clearance is larger than the optimum clearance value, the inner circulation air can obviously escape into the outer circulation cavity, and simultaneously the problems of gap airflow noise and the like can be caused, and the radial fit clearance is smaller than the optimum clearance value, the bottom ring edge of the periscope type air inlet pipe fitting and the raised ring edge outside the central hole on the middle partition plate of the blower impeller are in friction risk in the running process. A fit clearance is arranged between the bottom end face of the periscope type air inlet pipe fitting and the upper end face of the middle partition plate of the blower impeller, and in a certain range, through analysis and verification, the optimal clearance value is 2-4mm, if the optimal clearance value is larger than the optimal clearance value, internal circulation air can obviously escape into an external circulation cavity, meanwhile, the problems of gap airflow noise and the like can be caused, and if the optimal clearance value is smaller than the optimal clearance value, the bottom annular edge of the periscope type air inlet pipe fitting and a raised annular edge outside a central hole in the middle partition plate of the blower impeller can cause friction risk in the running process. For the steadiness of further improvement periscope formula air inlet pipe fitting installation, can keep away from the one end of air inlet on the head end air inlet pipe section of periscope formula air inlet pipe fitting and set up strengthening rib 214 outward (X to), the strengthening rib can be 1 or many according to the actual demand, and the outer tip of strengthening rib corresponds the position with the inside wall of air conditioner box and forms the assistance-localization real-time with the cooperation structure of slot through the inserted block and be connected. Therefore, the three-point positioning installation of the periscope type air inlet pipe fitting is realized by matching the plug-in mounting and matching connection of the two sides of the air inlet, and the good installation stability is achieved, see local figure 7. In addition, the strengthening rib plays the supporting role to the great filter core of volume, in sleet weather, outside air humidity is great, a large amount of moist outside air is behind air filter, air filter can soften, simultaneously including the effort that the air-blower induced drafts in the air-conditioning box, can cause air filter to have certain sunken in the Z direction, periscope formula air inlet pipe spare X is to the outer mouthful according to strengthening rib cooperation periscope formula air inlet pipe spare, form vertical frame structure support air filter, fundamentally has solved the sunken problem of some car matching great air filter core in sleet moist weather.
An inner annular air cavity is formed between the outer side surface of the periscope type air inlet pipe fitting and the inner annular surface of the upper impeller. The upper part of the periscope type air inlet pipe fitting is in contact with the lower part of the air filter element, so that the periscope type air inlet pipe fitting has the function of separating a space on one hand, and the periscope type air inlet pipe fitting has the function of supporting the air filter element on the other hand, the lower edge of an air inlet pipe section at the head end of the periscope type air inlet pipe fitting is in contact with the bottom edge of an upper air conditioner box, so that the inner space between the lower end of the air filter element and the upper end of an air blower impeller is divided into two independent air passing spaces which are an upper left air cavity 24 and an upper right air cavity 25 respectively. The width of the air inlet of the periscope type air inlet pipe fitting reaches the width of the upper right air cavity, and maximum air inlet is achieved.
And a first air communication channel is formed by the upper left air cavity, the inner ring air cavity, the outer ring air cavity and the air outlet 161 on the volute casing on the box body. And a second air communication channel is formed by the upper right air cavity, the inner cavity of the periscope type air inlet pipe fitting, the inner cavity of the lower impeller, the outer ring lower air cavity and the discharge port 181 on the lower volute of the box body.
This inside and outside air double-layer flow air conditioning cabinet assembly mode of air supply mode improved generation has the multiple, roughly can divide into three kinds:
firstly, the external circulation and the internal circulation of the air conditioner are simultaneously and independently opened, the air flow direction is schematically shown in figure 12, when an external circulation air door is 100 percent opened, outdoor fresh air (shown by black solid arrows in the figure, the same below) enters an upper impeller 112 of a blower structure through an air supply box structure, an internal circulation air door is also opened simultaneously, and indoor air (shown by black hollow arrows in the figure, the same below) enters a lower impeller 111 of the blower through a periscope type air inlet pipe fitting 21; because the upper impeller 112 and the lower impeller 111 of the fan separate the indoor air and the outdoor air through the intermediate impeller partition 113, the outdoor air and the indoor air are respectively sent to different parts in the vehicle through the double-layer flow blower, the outdoor air is used for defrosting and demisting, and the indoor air is used for heating. In order to further avoid the phenomenon that a small part of air is mixed at the blower due to the centrifugal action of indoor air and outdoor air, the bottom 213 of the periscope type air inlet pipe fitting and the intermediate baffle 113 of the blower impeller adopt a laminated structure, which is partially shown in a schematic diagram 10. In order to facilitate the installation of the periscope type air inlet pipe fitting in the volute of the box body, a special slot type structure is designed, and a local schematic diagram 11 is shown.
Secondly, when the external environment temperature is relatively low, in order to improve the air conditioning efficiency, outdoor fresh air and indoor air are mixed and then sent into the blower, the specific air flow direction schematic diagram is shown in fig. 13, when the external circulation air door is partially opened, the outdoor fresh air and the indoor air are mixed and then enter the upper impeller 112 of the blower structure after being filtered by the filter element, the internal circulation air door is also opened at the same time, and the indoor air enters the lower impeller 111 of the blower through the periscope type air inlet pipe fitting 21; since the upper impeller 112 and the lower impeller 111 of the blower separate the indoor air and the outdoor mixed air by the impeller partition 113, the outdoor mixed air and the indoor air are respectively sent to different parts of the vehicle through the double-layer blower.
Thirdly, when the external environment temperature is relatively high, in order to improve the air conditioning efficiency, outdoor hot air is not needed, and generally only indoor air with relatively low temperature is needed for internal circulation, the specific air flow direction schematic diagram is shown in fig. 14, when an external circulation air door is 100% closed, the indoor air enters an upper impeller 112 of the air blower structure after being filtered by a filter element, the internal circulation air door is also opened at the same time, and the indoor air enters a lower impeller 111 of the air blower through a periscope type air inlet pipe fitting 21; indoor air is respectively sent to different used parts in the vehicle through a double-layer flow blower.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit of the invention and the scope of the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and drawings.
Claims (4)
1. An air supply mode improved type double-layer flow air conditioner box assembly with internal air and external air comprises an air supply box structure, a box body volute structure connected with the air supply box structure and an air blower structure in the volute structure; the air supply box structure comprises an air conditioner upper box, an external circulation air door mounting frame, an air filter element, an internal circulation air door and an internal circulation air door mounting frame, wherein an outdoor air inlet and an indoor air inlet are respectively arranged on the external circulation air door mounting frame and the internal circulation air door mounting frame; the box body volute structure comprises a box body upper volute, a volute partition plate and a box body lower volute, and exhaust ports are formed in the box body upper volute and the box body lower volute; the blower structure comprises a blower impeller, a blower motor and a motor shell supporting plate; the blower impeller comprises upper and lower impellers, is provided with intermediate bottom between the two, its characterized in that:
the periscope type air inlet pipe fitting is composed of a flat horn-shaped head end air inlet pipe section with the upper part along the transverse direction, a cylindrical middle air inlet pipe section along the vertical direction and a cone-shaped tail end air inlet pipe section; an air inlet is arranged at the end part of the head end air inlet pipe section, vertical insertion blocks or slots are arranged on two side walls outside the air inlet, and an air outlet is arranged at the lower end of the tail end air inlet pipe section; the periscope type air inlet pipe fitting is inserted into an upper impeller cavity of the blower impeller from top to bottom, vertical insertion blocks or insertion slots on two sides of the periscope type air inlet pipe fitting are in insertion positioning fit with insertion slots or insertion block parts arranged on two side walls of an upper box body of an air conditioner, a bottom annular edge of the periscope type air inlet pipe fitting and a raised annular edge outside a central hole in a middle partition plate of the blower impeller are in clearance insertion fit along the radial direction, and a fit clearance is arranged between the bottom end face of the periscope type air inlet pipe fitting and the upper end face of the middle partition plate of the blower impeller; an inner annular air cavity is formed between the outer side surface of the periscope type air inlet pipe fitting and the inner annular surface of the upper impeller;
the upper part of the periscope type air inlet pipe fitting is contacted with the lower part of the air filter element, the lower edge of an air inlet pipe section at the head end of the periscope type air inlet pipe fitting is contacted with the bottom edge of an upper box of the air conditioner, so that the inner space between the lower end of the air filter element and the upper end of the blower impeller is divided into two independent air passing spaces which are an upper left air cavity and an upper right air cavity respectively;
an outer ring upper air cavity is formed between the outer side of the upper impeller and the inner side of the upper volute of the box body, an outer ring lower air cavity is formed between the outer side of the lower impeller and the inner side of the lower upper volute of the box body, and the outer ring upper air cavity and the outer ring lower air cavity are isolated by matching a volute partition plate with a middle partition plate of the blower impeller;
the upper left air cavity, the inner ring air cavity, the outer ring air cavity and the air outlet on the upper volute of the box body form a first air communicating channel; and a second air communication channel is formed by the upper right air cavity, the inner cavity of the periscope type air inlet pipe fitting, the inner cavity of the lower impeller, the outer ring lower air cavity and an air exhaust orifice on the lower volute of the box body.
2. The air supply mode improved type air conditioner box assembly with double air layers of inner air and outer air according to claim 1, characterized in that: keep away from the one end external connection that the air inlet was connected with the strengthening rib on periscope formula air inlet pipe fitting's head end air inlet pipe section, the tip of strengthening rib and the inside wall of air conditioner box correspond the position and form the assistance-localization real-time with the cooperation structure of slot through the inserted block and be connected, the upper end of strengthening rib and air filter's lower extreme support contact.
3. The air supply mode improved type air conditioner box assembly with double air layers of inside and outside according to claim 1, characterized in that: periscope formula air inlet pipe fitting adopts injection molding integral type forming structure, and the material adopts PP.
4. The air supply mode improved type air conditioner box assembly with double air layers of inside and outside according to claim 1, characterized in that: the radial fit clearance between the bottom ring edge of the periscope type air inlet pipe fitting and the edge of the raised ring outside the central hole on the middle partition plate of the blower impeller is 2-6 mm; the end face fit clearance between the bottom end face of the periscope type air inlet pipe fitting and the upper end face of the middle partition plate of the blower impeller is 2-4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210535150.7A CN115008967A (en) | 2022-05-17 | 2022-05-17 | Air supply mode improved type double-layer flow air-conditioning box assembly for internal air and external air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210535150.7A CN115008967A (en) | 2022-05-17 | 2022-05-17 | Air supply mode improved type double-layer flow air-conditioning box assembly for internal air and external air |
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| Publication Number | Publication Date |
|---|---|
| CN115008967A true CN115008967A (en) | 2022-09-06 |
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|---|---|---|---|
| CN202210535150.7A Pending CN115008967A (en) | 2022-05-17 | 2022-05-17 | Air supply mode improved type double-layer flow air-conditioning box assembly for internal air and external air |
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| Country | Link |
|---|---|
| CN (1) | CN115008967A (en) |
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2022
- 2022-05-17 CN CN202210535150.7A patent/CN115008967A/en active Pending
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