CN215662845U - Dry and wet air layered flow air conditioner ventilation system - Google Patents

Abstract

The utility model relates to a dry and wet air layered flow air conditioning ventilation system, which belongs to the field of automobile air conditioners and comprises an air conditioning box, and an impeller, a filter, an evaporator and a warm air core body which are sequentially arranged in the air conditioning box along the air flow direction; an inner partition plate penetrating through the impeller, the filter, the evaporator and the warm air core body is arranged in the air conditioning box and used for dividing the inner space of the air conditioning box into a first air channel and a second air channel; the air inlet shell is provided with an external fresh air duct, a defrosting air duct, a surface blowing air duct, a foot blowing air duct and an internal return air duct; one end of the first air channel is communicated with an external fresh air channel, and the other end of the first air channel is communicated with a defrosting air channel and a blowing surface air channel; one end of the second air duct is communicated with an air return duct in the vehicle, and the other end of the second air duct is communicated with a foot blowing duct. The utility model can realize the dry and wet air partition, reduce the axial size of the air conditioning system and realize the miniaturization of the air conditioning system.

Description

Dry and wet air layered flow air conditioner ventilation system

Technical Field

The utility model belongs to the field of automobile air conditioners, and relates to a dry and wet air layered flow air conditioner ventilation system.

Background

At present, new energy automobiles and intelligent automobiles require more compact design of air-conditioning boxes due to the requirement of adding various new functions and implementing various intelligent control schemes and the requirement of reserving more space for electric control equipment and electronic intelligent equipment. Meanwhile, the new energy pure electric vehicle does not have the waste heat recovery of an engine, can consume a large amount of high-grade electric energy when being heated and is used in winter, the cruising mileage is increased in order to save electric energy consumption, so that an external circulation fresh air mode (mainly dry air with low temperature) cannot be opened fully for a long time, and a large amount of cold load is avoided. The air conditioning ventilation system with layered dry and wet air flow is designed to overcome the contradiction, the defrosting channels are all external circulation fresh air (dry air), the foot blowing channels are all internal circulation return air (wet air), and the compactness of the air conditioning box is considered. The traditional air conditioning box needs to realize the layered flow of dry and wet air, can have the defects of large volume, complex structure, high noise and the like, and is difficult to meet the arrangement requirement of a small space.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a dry and wet air layered flow air conditioning ventilation system, which can reduce the axial dimension and miniaturize the air conditioning box.

In order to achieve the purpose, the utility model provides the following technical scheme:

a dry and wet air layered flow air conditioning ventilation system comprises an air conditioning box, and an impeller, a filter, an evaporator and a warm air core body which are sequentially arranged in the air conditioning box along the air flow direction; an inner partition plate penetrating through the impeller, the filter, the evaporator and the warm air core body is arranged in the air conditioning box and used for dividing the inner space of the air conditioning box into a first air channel and a second air channel; the air conditioning box is provided with an external fresh air duct, a defrosting air duct, a surface blowing air duct, a foot blowing air duct and an internal return air duct; one end of the first air channel is communicated with an external fresh air channel, and the other end of the first air channel is communicated with a defrosting air channel and a blowing surface air channel; one end of the second air duct is communicated with an air return duct in the vehicle, and the other end of the second air duct is communicated with a foot blowing duct.

Optionally, the fresh air duct, the defrosting air duct, the face air duct, the foot air duct and the return air duct are all provided with air doors.

Optionally, inner partition plate air doors which are respectively and independently controlled are respectively arranged between the first air duct and the blowing surface air duct and between the first air duct and the defrosting air duct, and between the second air duct and the return air duct in the vehicle.

Optionally, the inner partition plate air door is a sliding air door arranged on the warm air core body.

Optionally, the first air duct and the second air duct are communicated with each other through a blow-by air door arranged on the inner partition plate on one side of the warm air core body close to the blow-by air duct.

Optionally, the filter further comprises an air inlet box arranged at the front end of the impeller along the air flowing direction and a diffusion rectifying section arranged between the impeller and the filter.

Optionally, a guide vane for diffusion and rectification is arranged between the impeller and the filter.

Optionally, an air sealing device is arranged between the air inlet box and the impeller.

Optionally, the air inlet box is provided with an outer partition plate which is arranged in a rotating manner relative to the impeller so as to adjust the angle of the air inlet partition.

Optionally, the blades in the impeller are modeled mathematically using flow field simulation to determine 3D profile characteristics thereof.

The utility model has the beneficial effects that:

the utility model adopts the 3D impeller design, reduces the input power of the motor, saves energy by more than 20 percent compared with the traditional multi-wing fan, and has lower operating noise of an air conditioning system.

2 the utility model shortens the axial size, realizes the miniaturization of the air-conditioning box, reduces the input power of the motor, makes the operation noise of the air-conditioning system smaller, and simultaneously makes full use of the air-out characteristic of the centrifugal fan to match with the special outlet guide vane to realize the layered flow of the dry air and the wet air.

3, the utility model adopts a high-efficiency impeller work doing mode and a diffusion process, shortens the axial size, realizes the miniaturization of the air conditioning box, and meets the requirement of new energy automobiles and intelligent automobiles on the release of larger space of passenger cabins.

The utility model fully utilizes the air outlet characteristic of the centrifugal fan, and is matched with the design of a special outlet diffusion guide vane and a rotatable outer clapboard, thereby realizing the layered flow of dry and wet air and meeting the energy-saving requirements of a new energy automobile in a foot blowing mode and a foot blowing defrosting mode.

5 the utility model simultaneously realizes the advantages of energy saving, high efficiency, low noise, layered flow of dry and wet air and compact structure.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the utility model, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the present invention in an installed position within a vehicle;

FIG. 3 is a side view of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a schematic structural view of a gas seal device;

FIG. 6 is a cross-sectional view B-B of FIG. 3;

FIG. 7 is a schematic view of the position of the diaphragm damper in full hot mode;

FIG. 8 is a schematic view of the position of the baffle damper in full cold mode;

FIG. 9 is a schematic diagram of the position of the damper door in the hot and cold mixing mode;

FIG. 10 is an isometric view of an impeller of the present invention;

fig. 11 is a three-dimensional curved surface twisted model of the impeller blade of the present invention.

Reference numerals: the air conditioner comprises an external fresh air duct 1, a defrosting air duct 2, a blowing surface air duct 3, a foot blowing air duct 4, an internal return air duct 5, an internal partition plate 6, an impeller 7, a guide vane 8, a filter 9, an evaporator 10, a warm air core body 11, an air inlet box 12, a diffusion rectifying section 13, an external partition plate 14, an air sealing device 15, an internal return air door a, an external fresh air door b, a defrosting air door c, a partition plate air door d, a blowing surface air door e, a blow-by air door f and a foot blowing air door g.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the utility model only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the utility model thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 11, as shown in fig. 1, a dry and wet air layered flow air conditioning ventilation system includes an air conditioning box, and an impeller 7, a filter 9, an evaporator 10, and a warm air core 11 sequentially disposed in the air conditioning box along an air flow direction; an inner partition plate 6 which penetrates through the impeller 7, the filter 9, the evaporator 10 and the warm air core body 11 is arranged in the air-conditioning box and is used for dividing the inner space of the air-conditioning box into a first air channel and a second air channel; the air inlet shell is provided with an external fresh air duct 1, a defrosting duct 2, a surface blowing duct 3, a foot blowing duct 4 and an internal return air duct 5; one end of the first air channel is communicated with an external fresh air channel 1, and the other end of the first air channel is communicated with a defrosting air channel 2 and a blowing surface air channel 3; one end of the second air duct is communicated with an in-vehicle return air duct 5, and the other end of the second air duct is communicated with a foot blowing air duct 4.

Fresh air outside the automobile enters the air conditioning box through the fresh air duct outside the automobile, the fresh air door b outside the automobile controls the channel to be opened and closed, return air inside the automobile enters the air conditioning box through the return air duct 5 inside the automobile, the return air door a inside the automobile controls the channel to be opened and closed, the fresh air (dry air) and the return air (wet air) are separated through the inner partition 6, the inner partition 6 extends to the inlet of the fan impeller 7 and then penetrates out of the back support bracket of the impeller 7, the dry and wet air flows out from the axial direction after being pressurized through the impeller 7 and then being diffused and rectified through the guide vanes 8, the dry and wet air flows quickly through the impeller, the guide vanes 8 naturally split the air flow at the outlet of the impeller, the mixing degree is controllable, the upper part of the air flow flowing out in the axial direction is dry air, the lower part is wet air, the upper part and the lower part are still separated by the inner partition 6, the inner partition 6 horizontally penetrates through the air conditioning box 1, the dry and wet air flows through the filter 9, the evaporator 10 and the warm air core 11 in a layered mode, under the foot mode is blown to full heat or the foot defrosting mode is blown to full heat, scurries wind door f behind the warm braw core and closes, causes new trend (dry air) to flow out through defrosting wind channel 2, and return air (humid air) flows out through blowing foot wind channel 4, blows face air door e and closes in face wind channel 3 this moment. Therefore, under the full-hot foot blowing mode or the full-hot foot blowing defrosting mode, the layered flow of the dry and wet air is realized. In the face blowing mode or the foot blowing mode, as the requirements of dry and wet subareas do not exist, the air fleeing air door f is opened, the up-and-down air fleeing can be realized, and the adjustment of air volume distribution and temperature linear distribution is facilitated. In order to ensure the axial compactness of the air conditioning box, the partition plate air door d is an arc-shaped sliding air door, the hot air passage is closed by sliding towards the middle in the full-cold mode, the cold air passage is closed by sliding towards the upper side and the lower side in the full-hot mode, and the partition plate air door d is arranged at the central position in the mixed mode according to the requirement.

In fig. 2, the hollow arrows represent dry air, the solid arrows represent wet air, air is sucked from the axial direction, is pressurized and accelerated under the action of the rotation of the blades of the impeller 7, rapidly passes through the blades, flows out from the radial direction in an inclined mode, and the main flow direction of the air is restored to the axial direction under the guide of the backflow section and the action of the diffuser vanes 8.

In fig. 3, the hollow arrows indicate dry air, the solid arrows indicate wet air, and the air passes through the air inlet box 12, the diffusion rectifying section 13, the filter 9, the evaporator 10, and the warm air core 11 in this order. Fig. 4 shows the arrangement position of the outer partition 14, because the impeller 7 rotates to bring the rotation deviation of the dry and wet air partition at the outlet of the impeller 7, if the horizontal layering of the dry air and the wet air at the diffusion outlet of the impeller 7 is to be maintained, the outer partition 14 is required to control the air inlet partition angle of the dry air and the wet air to compensate the deviation, the outer partition 14 can adjust the rotation angle thereof at the same time to meet the requirement of horizontal positioning of the air outlet dry and wet partition of the impeller 7 under different conditions, and the air inlet box 12 is connected with the air sealing device 15.

Fig. 5 shows the position of the air seal device 15, after the air is pressurized by the impeller 7, a part of the air flow will flow back to the inlet of the impeller 7 through the gap of the impeller 7 cover due to the increase of the pressure head, so the air seal is designed to reduce the air backflow amount. Fig. 6 shows that after the air flow from the impeller 7 enters the diffuser vane 8, the air flows out from the axial direction, the dry air is located at the upper layer, the wet air is located at the lower layer and is divided by the horizontal inner partition 6, the horizontal partition extends from the motor stator all the way backwards, and the upper layer and the lower layer of the dry air and the wet air horizontally penetrate through the whole air conditioning box.

In order to shorten the axial length of the air conditioning system as much as possible, the partition plate air door d adopts an arc sliding air door mode. Fig. 7-9 are schematic diagrams showing the position of the baffle damper d in the full cold mode, the full hot mode, and the hot and cold mixed mode. Fig. 10-11 are schematic views of an impeller 7 in the present invention, and the present invention adopts a ternary mixed flow impeller 7, and blades of the impeller 7 are in a three-dimensional curved surface twisted shape. The traditional multi-wing impeller 7 centrifugal fan has the advantages that the blades are 2D in characteristic, three-dimensional flow of fluid cannot be completely controlled, flow loss is large, aerodynamic efficiency is low, the axial size is large, the diffusion distance of a volute needs to be reserved, and occupied space is large. The three-dimensional flow mixed flow impeller 7 is characterized in that a three-dimensional space inside the impeller 7 is infinitely divided, a complete and real mathematical model of fluid flow in the impeller 7 is established through analysis of each working point in a flow channel of the impeller 7, meshing and flow field calculation are carried out, factors such as the inlet and outlet installation angle of blades, the number of blades and the shape of each cross section of a twisted blade are optimized, the structure of the three-dimensional flow mixed flow impeller is adaptable to the real flow state of the fluid, flow separation of the working surface of the blades is avoided, flow loss is reduced, the speed distribution of all fluid particles inside can be controlled, the optimal flow state inside a fan is obtained, the efficiency of fluid conveying is guaranteed to be optimal, and the appearance characteristics of the impeller 7 are established.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims (10)

1. A dry and wet air layered flow air conditioning ventilation system is characterized in that: the air conditioner comprises an air conditioner box, and an impeller, a filter, an evaporator and a warm air core body which are sequentially arranged in the air conditioner box along the air flowing direction; an inner partition plate penetrating through the impeller, the filter, the evaporator and the warm air core body is arranged in the air conditioning box and used for dividing the inner space of the air conditioning box into a first air channel and a second air channel; the air conditioning box is provided with an external fresh air duct, a defrosting air duct, a surface blowing air duct, a foot blowing air duct and an internal return air duct; one end of the first air channel is communicated with an external fresh air channel, and the other end of the first air channel is communicated with a defrosting air channel and a blowing surface air channel; one end of the second air duct is communicated with an air return duct in the vehicle, and the other end of the second air duct is communicated with a foot blowing duct.

2. The system according to claim 1, wherein the system comprises: and air doors are arranged on the fresh air duct outside the vehicle, the defrosting air duct, the face air duct, the foot air duct and the return air duct inside the vehicle.

3. The system according to claim 1, wherein the system comprises: and inner partition plate air doors which are respectively and independently controlled are respectively arranged between the first air duct and the blowing surface air duct and the defrosting air duct and between the second air duct and the return air duct in the vehicle.

4. The system according to claim 3, wherein: the inner baffle air door is a sliding air door arranged on the warm air core body.

5. The system according to claim 1, wherein the system comprises: the first air duct and the second air duct are communicated through an air fleeing air door arranged on the inner partition plate on one side, close to the blowing surface air duct, of the warm air core body.

6. The system according to claim 1, wherein the system comprises: the air purifier also comprises an air inlet box arranged at the front end of the impeller along the air flowing direction and a diffusion rectifying section arranged between the impeller and the filter.

7. The system according to claim 6, wherein: and guide vanes for diffusion and rectification are arranged between the impeller and the filter.

8. The system according to claim 7, wherein: and an air sealing device is arranged between the air inlet box and the impeller.

9. The system according to claim 7, wherein: the air inlet box is provided with an outer partition plate which is arranged in a rotating way relative to the impeller so as to adjust the angle of the air inlet partition.

10. The system according to any one of claims 1 to 9, wherein: the blades in the impeller are modeled mathematically using flow field simulation to determine their 3D profile characteristics.

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