CN216659507U

CN216659507U - Air conditioner distributor box flow guide structure and air conditioner distributor box

Info

Publication number: CN216659507U
Application number: CN202122875113.4U
Authority: CN
Inventors: 蔡丹丹; 徐凌伟; 沈真; 毛毅龙; 曹申杰; 孙海祥
Original assignee: Sanden Huayu Automotive Air Conditioning Co Ltd
Current assignee: Sanden Huayu Automotive Air Conditioning Co Ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-06-03
Anticipated expiration: 2031-11-23

Abstract

The utility model belongs to the technical field of automobile air conditioners and discloses an air conditioner distribution box flow guide structure and an air conditioner distribution box. This air conditioner distributor box water conservancy diversion structure sets up between condenser and PTC heater, including the median septum, first side casing and second side casing, form middle runner between first side casing and the second side casing, the median septum sets up between first side casing and second side casing, one side that the median septum is close to first side casing is provided with a plurality of first guide plates, one side that the median septum is close to second side casing is provided with a plurality of second guide plates, first guide plate and second guide plate symmetry set up, one side that first side casing is close to the median septum is provided with a plurality of third guide plates, one side that second side casing is close to the median septum is provided with a plurality of fourth guide plates. The air conditioner distribution box flow guide structure and the air conditioner distribution box can improve the uniformity of the air speed passing through the PTC heater, improve the performance of an air conditioner and the comfort of the whole vehicle, and are energy-saving and environment-friendly.

Description

Air conditioner distributor box water conservancy diversion structure and air conditioner distributor box

Technical Field

The utility model relates to the technical field of automobile air conditioners, in particular to a flow guide structure of an air conditioner distribution box and the air conditioner distribution box.

Background

The automobile air conditioner distribution box is internally provided with an evaporator, a built-in condenser and a PTC heater, and the refrigeration and heating functions can be switched by adjusting the flow direction of a refrigerant in a pipeline. Generally, in a heating operation, it is required that air passing through the distribution box uniformly passes through the built-in condenser and the PTC heater and is heated, and then flows to each outlet through the duct.

However, current dispenser designs are limited to the volume of the engine compartment, resulting in a compact overall structure. Also, the condenser is generally installed at a position lower than the evaporator for easy installation and maintenance, resulting in a large concentration of air passing through the evaporator at an upper portion of the condenser. The actual working surface area of the PTC heater is smaller than that of the condenser, and the middle flow passage between the PTC heater and the condenser is shorter, so that the air passing through the condenser is concentrated in the upper outer area of the PTC heater. In addition, in order to facilitate installation of the PTC heater, the heat radiating fins of the circuit board of the PTC heater are arranged at the bottom of the middle flow channel, and the wind speed at the position is low, so that the heat radiation of the PTC heater during working is not facilitated. For these reasons, the condenser and the PTC have low working efficiency, poor heating and cooling effects, reduced service life, and reduced comfort of passengers for the entire vehicle.

Therefore, a diversion structure for an air conditioning distribution box and an air conditioning distribution box are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an air conditioner distribution box flow guide structure and an air conditioner distribution box, which can improve the uniformity of air speed passing through a PTC heater, improve the performance of an air conditioner and the comfort of the whole vehicle, improve the energy efficiency, save energy and protect environment.

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

the utility model provides an air conditioner distributor box water conservancy diversion structure, sets up between condenser and PTC heater, including median septum, first side casing and second side casing, first side casing with form middle runner between second side casing, the median septum sets up first side casing with between the second side casing, the median septum is close to one side of first side casing is provided with a plurality of first guide plates, the median septum is close to one side of second side casing is provided with a plurality of second guide plates, first guide plate with second guide plate symmetry sets up, first side casing is close to one side of median septum is provided with a plurality of third guide plates, second side casing is close to one side of median septum is provided with a plurality of fourth guide plates, wherein, first guide plate the second guide plate the third guide plate and the fourth guide plate can be with the process the wind of condenser guides extremely PTC heater A lower portion of the heater.

Preferably, a first gap is formed between the first guide plate and the third guide plate, and a second gap is formed between the second guide plate and the fourth guide plate.

Preferably, the first flow guide plate, the second flow guide plate, the third flow guide plate and the fourth flow guide plate are of a bent plate-shaped structure, and the density of the curved surface of the first flow guide plate, the second flow guide plate, the third flow guide plate and the fourth flow guide plate on the side close to the condenser is greater than the density of the curved surface of the first flow guide plate, the second flow guide plate, the third flow guide plate and the fourth flow guide plate on the side close to the PTC heater.

Preferably, a first notch is formed in one end, close to the first side shell, of the first guide plate, a second notch is formed in one end, close to the second side shell, of the second guide plate, a third notch is formed in one end, close to the middle partition plate, of the third guide plate, and a fourth notch is formed in one end, close to the middle partition plate, of the fourth guide plate.

As preferred, first guide plate is provided with first reinforcement post, the one end of first reinforcement post with the median septum is connected, the second guide plate is provided with second reinforcement post, the one end of second reinforcement post with the median septum is connected, the third guide plate is provided with the third reinforcement post, the one end of third reinforcement post with first side casing is connected, the fourth guide plate is provided with the fourth reinforcement post, the one end of fourth reinforcement post with second side casing is connected.

Preferably, the junction of the first guide plate and the middle clapboard is provided with a first reinforcing rib, the junction of the second guide plate and the middle clapboard is provided with a second reinforcing rib, the junction of the third guide plate and the first side shell is provided with a third reinforcing rib, and the junction of the fourth guide plate and the second side shell is provided with a fourth reinforcing rib.

The utility model provides an air conditioner distributor box, includes box, condenser, PTC heater and air conditioner distributor box water conservancy diversion structure, the condenser the PTC heater and air conditioner distributor box water conservancy diversion structure sets up in the box, air conditioner distributor box water conservancy diversion structure sets up between condenser and PTC heater.

As preferred, still include evaporimeter, cold air door and hot-blast air door, the evaporimeter the cold air door and hot-blast air door sets up in the box, the evaporimeter sets up the condenser deviates from one side of PTC heater, the cold air door sets up one side of evaporimeter, hot-blast air door sets up the PTC heater deviates from one side of condenser.

Preferably, the refrigerator further comprises a rear blowing foot flow channel, a rear blowing surface flow channel, a middle blowing surface flow channel, a side blowing surface flow channel and a defrosting flow channel which are arranged on the box body, a transition flow channel is arranged in the box body, the cold air door and the hot air door are communicated with the transition flow channel, and the rear blowing foot flow channel, the rear blowing surface flow channel, the middle blowing surface flow channel, the side blowing surface flow channel and the defrosting flow channel can be communicated with the transition flow channel.

Preferably, still be provided with first air door, second air door and third air door in the box, first air door sets up the transition runner with blow between the foot runner after, the second air door sets up the transition runner with blow between the face runner in, the third air door sets up the transition runner with between the defrosting runner.

The utility model has the beneficial effects that:

when the air-conditioning distribution box flow guide structure is used, air enters the air-conditioning distribution box through the inlet, part of the air can pass through the condenser and enters the middle flow channel, the first flow guide plate, the second flow guide plate, the third flow guide plate and the fourth flow guide plate which are arranged in the middle flow channel guide the air passing through the condenser to the lower part of the PTC heater, namely, the air originally gathered on the two sides of the upper part of the PTC heater is guided to the lower part of the PTC heater, the air circulation of the lower part of the PTC heater is increased, and heat is fully taken away by the heat dissipation fins on the lower part of the PTC heater. According to the air conditioner distribution box flow guide structure and the air conditioner distribution box, provided by the utility model, the uniformity of the air speed passing through the PTC heater can be improved, the performance of an air conditioner and the comfort of the whole vehicle are improved, the energy efficiency can be improved, and the energy saving and environment protection effects can be realized on the premise that the air flow resistance is not improved within the range of the original structure size.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a flow guide structure of an air conditioner distribution box provided by the utility model;

FIG. 2 is a first schematic structural view of a middle partition plate according to the present invention;

FIG. 3 is a schematic structural view II of the middle partition plate according to the present invention;

FIG. 4 is a schematic view of the first side housing of the present invention;

FIG. 5 is a schematic view of a second side housing according to the present invention;

FIG. 6 is a schematic structural view of an air conditioning distribution box provided by the present invention;

fig. 7 is a partially enlarged view of a portion a in fig. 6.

In the figure:

1. a condenser; 2. a PTC heater; 3. a box body; 4. an evaporator; 5. a cold air door; 6. a hot air damper; 7. a post-blow foot flow channel; 8. a rear blowing surface flow passage; 9. a middle blowing surface flow channel; 10. a side-blown surface flow channel; 11. a defrosting flow channel; 12. a transition flow channel; 13. a first damper; 14. a second damper; 15. a third damper;

100. a middle partition plate; 101. a first baffle; 1011. a first reinforcement column; 102. a second baffle; 1021. A second reinforcement column; 103. a first reinforcing rib; 104. a second reinforcing rib; 200. a first side shell; 201. A third baffle; 2011. a third reinforcement column; 202. a third reinforcing rib; 300. a second side housing; 301. A fourth baffle; 3011. a fourth reinforcement column; 302. a fourth reinforcing rib; 400. an intermediate flow passage; 500. a first gap; 600. a second gap.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

Example one

As shown in fig. 1 to 5 and referring to fig. 6 and 7, the present embodiment provides a flow guiding structure of an air conditioning distribution box, which is disposed between a condenser 1 and a PTC heater 2, and comprises a middle partition plate 100, a first side shell 200 and a second side shell 300, wherein a middle flow channel 400 is formed between the first side shell 200 and the second side shell 300, the middle partition plate 100 is disposed between the first side shell 200 and the second side shell 300, a plurality of first flow deflectors 101 are disposed on one side of the middle partition plate 100 close to the first side shell 200, a plurality of second flow deflectors 102 are disposed on one side of the middle partition plate 100 close to the second side shell 300, the first flow deflectors 101 and the second flow deflectors 102 are symmetrically disposed, a plurality of third flow deflectors 201 are disposed on one side of the first side shell 200 close to the middle partition plate 100, a plurality of fourth flow deflectors 301 are disposed on one side of the second side shell 300 close to the middle partition plate 100, the first guide plate 101, the second guide plate 102, the third guide plate 201, and the fourth guide plate 301 can guide the wind passing through the condenser 1 to the lower portion of the PTC heater 2.

When the air-conditioning distribution box flow guide structure provided by the embodiment is used, air enters the air-conditioning distribution box through the inlet, part of the air can pass through the condenser 1 and enter the middle flow channel 400, the first flow guide plate 101, the second flow guide plate 102, the third flow guide plate 201 and the fourth flow guide plate 301 which are arranged in the middle flow channel 400 guide the air passing through the condenser 1 to the lower part of the PTC heater 2, namely, the air which is originally gathered on two sides of the upper part of the PTC heater 2 is guided to the lower part of the PTC heater 2, the air circulation amount of the lower part of the PTC heater 2 is increased, and the heat is taken away by the heat dissipation fins on the lower part of the PTC heater 2. This air conditioner distributor box water conservancy diversion structure, at the primary definite structure size within range, do not promote under the prerequisite of air flow resistance, can promote the homogeneity through PTC heater 2's air speed, promote the performance and the whole car travelling comfort of air conditioner, but also can improve the efficiency, energy-concerving and environment-protective.

Optionally, in this embodiment, a first gap 500 is disposed between the first baffle 101 and the third baffle 201, and a second gap 600 is disposed between the second baffle 102 and the fourth baffle 301. By providing the first gap 500 and the second gap 600, the air flow rate of the intermediate flow passage 400 can be increased, and the air flow rate can be made more uniform.

In a specific embodiment, the first guide plate 101, the second guide plate 102, the third guide plate 201, and the fourth guide plate 301 are in a curved plate-like structure, and the curved density of the first guide plate 101, the second guide plate 102, the third guide plate 201, and the fourth guide plate 301 on the side close to the condenser 1 is greater than the curved density on the side close to the PTC heater 2. Through the structure, the air flows more smoothly and uniformly in the middle flow channel 400, the noise generated by air flow is reduced, and the user experience is enhanced.

In another specific embodiment, a first notch is formed at an end of the first baffle 101 close to the first side casing 200, a second notch is formed at an end of the second baffle 102 close to the second side casing 300, a third notch is formed at an end of the third baffle 201 close to the middle partition 100, and a fourth notch is formed at an end of the fourth baffle 301 close to the middle partition 100. Through setting up first breach, second breach, third breach and fourth breach, can avoid middle runner 400 to block up and lead to the unable air that flows, guaranteed middle runner 400 air flow's stability. As a preferable technical solution, the number of the first notches formed in the first guide plate 101 located at the upper portion is greater than the number of the first notches formed in the first guide plate 101 located at the lower portion, the number of the second notches formed in the second guide plate 102 located at the upper portion is greater than the number of the second notches formed in the second guide plate 102 located at the lower portion, the number of the third notches formed in the third guide plate 201 located at the upper portion is greater than the number of the third notches formed in the third guide plate 201 located at the lower portion, and the number of the fourth notches formed in the fourth guide plate 301 located at the upper portion is greater than the number of the fourth notches formed in the fourth guide plate 301 located at the lower portion, so that the upper portion of the intermediate flow channel 400 is prevented from being blocked to cause no air to flow through, and the fluidity of air is further improved.

In order to strengthen the structural strength of the first guide plate 101, the second guide plate 102, the third guide plate 201 and the fourth guide plate 301, ensure the stability, in this embodiment, the first guide plate 101 is provided with a first reinforcement column 1011, one end of the first reinforcement column 1011 is connected with the middle partition plate 100, the second guide plate 102 is provided with a second reinforcement column 1021, one end of the second reinforcement column 1021 is connected with the middle partition plate 100, the third guide plate 201 is provided with a third reinforcement column 2011, one end of the third reinforcement column 2011 is connected with the first side shell 200, the fourth guide plate 301 is provided with a fourth reinforcement column 3011, one end of the fourth reinforcement column 3011 is connected with the second side shell 300, thereby avoiding the deformation of the first guide plate 101, the second guide plate 102, the third guide plate 201 and the fourth guide plate 301 during wind guiding, and ensuring the fluency of air flow.

In a preferred embodiment, a first reinforcing rib 103 is disposed at a joint of the first baffle 101 and the middle baffle 100, a second reinforcing rib 104 is disposed at a joint of the second baffle 102 and the middle baffle 100, a third reinforcing rib 202 is disposed at a joint of the third baffle 201 and the first side case 200, and a fourth reinforcing rib 302 is disposed at a joint of the fourth baffle 301 and the second side case 300. Through setting up first strengthening rib 103, second strengthening rib 104, third strengthening rib 202 and fourth strengthening rib 302, the structural strength of first guide plate 101, second guide plate 102, third guide plate 201 and fourth guide plate 301 obtains further promotion, has guaranteed the structural strength of median septum 100, first side casing 200 and second side casing 300 moreover.

After adopting above-mentioned scheme, through computer simulation calculation and actual product verification, the air conditioner distributor box water conservancy diversion structure that this embodiment provided can need not to promote the air flow resistance at the primary definite structure size within range, can promote the homogeneity of the air speed through PTC heater 2 to promote the performance and the whole car travelling comfort of air conditioner, can also improve the efficiency, energy-concerving and environment-protective.

Example two

As shown in fig. 6 to 7 and referring to fig. 1 to 5, the present embodiment provides an air-conditioning distribution box, which includes a box body 3, a condenser 1, a PTC heater 2, and an air-conditioning distribution box flow guiding structure provided in the first embodiment, wherein the condenser 1, the PTC heater 2, and the air-conditioning distribution box flow guiding structure are disposed in the box body 3, and the air-conditioning distribution box flow guiding structure is disposed between the condenser 1 and the PTC heater 2.

When the air-conditioning distribution box provided by the embodiment is used, air enters the box body 3 through the inlet, part of the air can pass through the condenser 1 and enter the middle flow channel 400, the first guide plate 101, the second guide plate 102, the third guide plate 201 and the fourth guide plate 301 which are arranged in the middle flow channel 400 guide the air passing through the condenser 1 to the lower part of the PTC heater 2, namely, the air which is originally gathered at two sides of the upper part of the PTC heater 2 is guided to the lower part of the PTC heater 2, the air circulation quantity at the lower part of the PTC heater 2 is increased, and heat is fully taken away by the heat radiating fins at the lower part of the PTC heater 2. This air conditioner distributor box, at the primary definite structure size within range, under the prerequisite that does not promote the air flow resistance, can promote the homogeneity through PTC heater 2's air speed, promote the performance and the whole car travelling comfort of air conditioner, but also can improve the efficiency, energy-concerving and environment-protective.

Optionally, the air conditioner distributor box that this embodiment provided still includes evaporimeter 4, cold air door 5 and hot-blast air door 6, and evaporimeter 4, cold air door 5 and hot-blast air door 6 set up in box 3, and evaporimeter 4 sets up the one side that deviates from PTC heater 2 at condenser 1, and cold air door 5 sets up the one side at evaporimeter 4, and hot-blast air door 6 sets up the one side that deviates from condenser 1 at PTC heater 2. Through the structure, when the air conditioner is in a refrigeration mode, the cold air door 5 is opened, the hot air door 6 is closed, air enters the box body 3 through the inlet, part of air can pass through the evaporator 4, and the air flows out through the cold air door 5 after being cooled by the evaporator 4; when the air conditioner is in a heating mode, the cold air door 5 is closed, the hot air door 6 is opened, air enters the box body 3 through the inlet, part of air passes through the condenser 1, and the air is heated by the condenser 1 and the PTC heater 2 and flows out through the hot air door 6.

In one embodiment, the air-conditioning distribution box provided by this embodiment further includes a rear-blowing leg flow channel 7, a rear-blowing surface flow channel 8, a middle-blowing surface flow channel 9, a side-blowing surface flow channel 10, and a defrosting flow channel 11 disposed on the box body 3, a transition flow channel 12 is disposed in the box body 3, the cold air door 5 and the hot air door 6 are communicated with the transition flow channel 12, and the rear-blowing leg flow channel 7, the rear-blowing surface flow channel 8, the middle-blowing surface flow channel 9, the side-blowing surface flow channel 10, and the defrosting flow channel 11 can be communicated with the transition flow channel 12. Through above-mentioned structure, can realize blowing foot mode, blowing face mode and defrosting mode in the car, and then reinforcing user experience.

Optionally, a first damper 13, a second damper 14 and a third damper 15 are further disposed in the box 3, the first damper 13 is disposed between the transition flow passage 12 and the rear foot blowing flow passage 7, the second damper 14 is disposed between the transition flow passage 12 and the middle blowing surface flow passage 9, and the third damper 15 is disposed between the transition flow passage 12 and the defrosting flow passage 11. Through setting up first air door 13, second air door 14 and third air door 15, can realize blowing the regulation and control of air output under foot mode, the face mode of blowing and the defrosting mode in the car to satisfy user's different demands.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides an air conditioner distributor box water conservancy diversion structure, sets up between condenser (1) and PTC heater (2), its characterized in that, includes median septum (100), first side casing (200) and second side casing (300), first side casing (200) with runner (400) in the middle of forming between second side casing (300), median septum (100) set up first side casing (200) with between second side casing (300), median septum (100) are close to one side of first side casing (200) is provided with a plurality of first guide plate (101), one side that median septum (100) are close to second side casing (300) is provided with a plurality of second guide plate (102), first guide plate (101) with second guide plate (102) symmetry sets up, one side that first side casing (200) are close to median septum (100) is provided with a plurality of third guide plate (201), the second side shell (300) is close to one side of the middle partition plate (100) is provided with a plurality of fourth guide plates (301), wherein the first guide plate (101), the second guide plate (102), the third guide plate (201) and the fourth guide plate (301) can guide the wind passing through the condenser (1) to the lower part of the PTC heater (2).

2. The air conditioning distribution box flow guiding structure of claim 1, wherein a first gap (500) is provided between the first flow guiding plate (101) and the third flow guiding plate (201), and a second gap (600) is provided between the second flow guiding plate (102) and the fourth flow guiding plate (301).

3. The air conditioning distribution box flow guiding structure of claim 1, wherein the first flow guiding plate (101), the second flow guiding plate (102), the third flow guiding plate (201), and the fourth flow guiding plate (301) are of a bent plate-shaped structure, and the density of curved surfaces of the first flow guiding plate (101), the second flow guiding plate (102), the third flow guiding plate (201), and the fourth flow guiding plate (301) on the side close to the condenser (1) is greater than the density of curved surfaces on the side close to the PTC heater (2).

4. The air conditioner distribution box flow guiding structure of claim 1, wherein a first notch is formed at one end of the first flow guiding plate (101) close to the first side shell (200), a second notch is formed at one end of the second flow guiding plate (102) close to the second side shell (300), a third notch is formed at one end of the third flow guiding plate (201) close to the middle partition plate (100), and a fourth notch is formed at one end of the fourth flow guiding plate (301) close to the middle partition plate (100).

5. The air-conditioning distribution box flow guide structure according to claim 1, wherein the first guide plate (101) is provided with a first reinforcing column (1011), one end of the first reinforcing column (1011) is connected with the middle partition plate (100), the second guide plate (102) is provided with a second reinforcing column (1021), one end of the second reinforcing column (1021) is connected with the middle partition plate (100), the third guide plate (201) is provided with a third reinforcing column (2011), one end of the third reinforcing column (2011) is connected with the first side shell (200), the fourth guide plate (301) is provided with a fourth reinforcing column (3011), and one end of the fourth reinforcing column (3011) is connected with the second side shell (300).

6. The air conditioner distribution box flow guide structure according to claim 1, wherein a first reinforcing rib (103) is arranged at the joint of the first flow guide plate (101) and the middle partition plate (100), a second reinforcing rib (104) is arranged at the joint of the second flow guide plate (102) and the middle partition plate (100), a third reinforcing rib (202) is arranged at the joint of the third flow guide plate (201) and the first side shell (200), and a fourth reinforcing rib (302) is arranged at the joint of the fourth flow guide plate (301) and the second side shell (300).

7. An air-conditioning distribution box, characterized by comprising a box body (3), a condenser (1), a PTC heater (2) and the air-conditioning distribution box flow guiding structure of any one of claims 1-6, wherein the condenser (1), the PTC heater (2) and the air-conditioning distribution box flow guiding structure are arranged in the box body (3), and the air-conditioning distribution box flow guiding structure is arranged between the condenser (1) and the PTC heater (2).

8. The air conditioner distribution box of claim 7, further comprising an evaporator (4), a cold air door (5) and a hot air door (6), wherein the evaporator (4), the cold air door (5) and the hot air door (6) are arranged in the box body (3), the evaporator (4) is arranged on one side of the condenser (1) departing from the PTC heater (2), the cold air door (5) is arranged on one side of the evaporator (4), and the hot air door (6) is arranged on one side of the PTC heater (2) departing from the condenser (1).

9. The air conditioning distribution box of claim 8, further comprising a rear blowing foot flow passage (7), a rear blowing surface flow passage (8), a middle blowing surface flow passage (9), a side blowing surface flow passage (10) and a defrosting flow passage (11) which are arranged on the box body (3), wherein a transition flow passage (12) is arranged in the box body (3), the cold air door (5) and the hot air door (6) are communicated with the transition flow passage (12), and the rear blowing foot flow passage (7), the rear blowing surface flow passage (8), the middle blowing surface flow passage (9), the side blowing surface flow passage (10) and the defrosting flow passage (11) can be communicated with the transition flow passage (12).

10. The air conditioning distribution box of claim 9, wherein a first damper (13), a second damper (14) and a third damper (15) are further disposed in the box body (3), the first damper (13) is disposed between the transition flow passage (12) and the rear blowing leg flow passage (7), the second damper (14) is disposed between the transition flow passage (12) and the middle blowing surface flow passage (9), and the third damper (15) is disposed between the transition flow passage (12) and the defrosting flow passage (11).