KR20200141784A - Overhead type air conditioning apparatus for automotive vehicle - Google Patents

Abstract

An overhead type air conditioning device for a vehicle is disclosed. According to an embodiment of the present invention, the overhead type air conditioning device comprises: an air conditioning case having a lower case and an upper cover which closes an opened upper surface of the lower case; and an evaporator and a blower fan disposed inside the air conditioning case. The lower case comprises a floor unit and a side wall unit formed on the floor unit. The side wall unit comprises: a front surface unit having an air inlet; a rear surface unit having an air outlet; and a pair of side surface units connecting the front surface unit and the rear surface unit and having a condensed water discharge hole. The floor unit has a curvature which goes higher in a convex shape as getting farther from the pair of side surface units. The lower case has a drain guide unit which protrudes from the floor unit between the evaporator and the blower fan to connect the pair of side surface units.

Description

Vehicle overhead type air conditioning system {OVERHEAD TYPE AIR CONDITIONING APPARATUS FOR AUTOMOTIVE VEHICLE}

The embodiment relates to an overhead type air conditioner for a vehicle.

In a large vehicle such as a van, an overhead type air conditioner may be additionally installed in addition to the main air conditioner that is installed in front of the driver's seat of the vehicle and performs cooling and heating for the first row of passenger spaces.

An overhead type air conditioner for a vehicle is installed on the ceiling of a vehicle cabin and can supply cold air to the second or third row of passenger spaces.

To this end, the overhead type air conditioning apparatus for a vehicle may include an air conditioning case fixed to a roof panel of a vehicle, and an evaporator and a blower fan disposed in the air conditioning case.

An air intake port, an air outlet port, and a condensate discharge hole may be formed in the air conditioning case. The air inlet and the air outlet are generally formed on the front and rear sides of the air conditioning case, while the condensate discharge hole is generally formed on the side of the air conditioning case.

Condensed water may be generated on the surface of the evaporator, and may be discharged to the outside of the vehicle through a condensate discharge pipe connected to the condensate discharge hole of the air conditioning case.

However, when some of the condensed water is discharged into the vehicle cabin through the air outlet along the air flow direction, there is a problem that may cause discomfort to the occupant.

In particular, when the vehicle is traveling uphill, the possibility of condensate discharge may be further increased.

In addition, when the vehicle is traveling downhill, there is a problem that the vehicle is discharged into the vehicle interior through the air intake port.

Korean Registered Patent Publication No. 10-0701165 (2007.03.28., Overhead type air conditioner for vehicles)

The embodiment provides an overhead type air conditioner for a vehicle in which condensed water generated from the surface of an evaporator is discharged into a vehicle interior through an air outlet or the like.

The problems to be solved in the embodiments are not limited thereto, and the objectives and effects that can be grasped from the solutions or embodiments of the problems described below are also included.

According to one feature of the present invention, the air conditioning case having a lower case and an upper cover for closing the open upper surface of the lower case; And an evaporator and a blower fan disposed in the air conditioning case, wherein the lower case includes a bottom portion and a side wall portion formed on the bottom portion, and the side wall portion includes a front portion having an air inlet and a rear portion having an air outlet. , And a pair of side portions connecting the front portion and the rear portion and having a condensate discharge hole formed therein, and the bottom portion has a convex curvature so as to increase away from the pair of side portions, and the lower case includes the evaporator and the blower An overhead type air conditioner for a vehicle including a drain guide part protruding from the bottom part between the fans and connecting the pair of side parts may be provided.

The height of both ends of the drain guide part may be greater than the height of the central part.

Upper edges of both ends may be disposed higher than upper edges of the central portion.

The evaporator and the blowing fan may be disposed between both ends.

The width of the central portion may be greater than the width of the evaporator.

A fan motor driving the blowing fan; And a speed control unit for controlling the rotational speed of the fan motor, wherein the lower case includes a watertight partition wall formed on the bottom and surrounding the speed control unit, and the drainage guide part through the watertight partition wall It may be connected to the side part.

The upper edge of the watertight partition may be disposed higher than the upper edge of the drain guide part.

The lower case includes a first dam and a second dam protruding from the bottom portion and connecting the pair of side portions, the first dam is disposed between the air inlet and the evaporator, the second dam It may be disposed between the blowing fan and the air outlet.

In the first dam and the second dam, upper edges of both ends may be disposed higher than the upper edge of the central portion.

The blowing fan may be disposed closer to the air outlet than the evaporator.

The blowing fan may be a cross flow fan.

According to the embodiment, by forming a curvature at the bottom of the air conditioning case and arranging a drainage guide on the downstream side of the evaporator, condensed water is allowed to flow toward the condensate discharge hole, while being suppressed from being discharged into the vehicle through the air discharge port. I can.

In addition, while suppressing condensate overflow at both ends of the drain guide portion, it is possible to improve the problem of reducing the air volume due to the drain guide portion or increasing the size of the product in the height direction.

Various and beneficial advantages and effects of the present invention are not limited to the above-described contents, and may be more easily understood in the course of describing specific embodiments of the present invention.

1 is a side view of an overhead type air conditioner for a vehicle according to an embodiment of the present invention,
Figure 2 is a front view of Figure 1,
Figure 3 is a rear view of Figure 1,
Figure 4 is a plan view of Figure 1,
5 is a plan view of a state in which the upper cover is removed in FIG. 4,
6 is a cross-sectional view taken along A-A of FIG. 5,
7 is a cross-sectional view taken along B-B of FIG. 5,
8 is a cross-sectional view taken along C-C of FIG. 5.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical idea of the present invention is not limited to some embodiments to be described, but may be implemented in a variety of different forms, and within the scope of the technical idea of the present invention, one or more of the components may be selectively selected between the embodiments. It can be combined with and substituted for use.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention are generally understood by those of ordinary skill in the art, unless explicitly defined and described. It can be interpreted as a meaning, and terms generally used, such as terms defined in a dictionary, may be interpreted in consideration of the meaning in the context of the related technology.

In addition, terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.

In the present specification, the singular form may include the plural form unless specifically stated in the phrase, and when described as “at least one (or more than one) of A and (and) B and C”, it is combined with A, B, and C. It may contain one or more of all possible combinations.

In addition, terms such as first, second, A, B, (a), and (b) may be used in describing the components of the embodiment of the present invention.

These terms are only for distinguishing the component from other components, and are not limited to the nature, order, or order of the component by the term.

And, when a component is described as being'connected','coupled' or'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also the component and It may also include the case of being'connected','coupled' or'connected' due to another element between the other elements.

In addition, when it is described as being formed or disposed on the “top (top) or bottom (bottom)” of each component, the top (top) or bottom (bottom) is not only when the two components are in direct contact with each other, but also one It includes a case in which the above other component is formed or disposed between the two components. In addition, when expressed as “upper (upper) or lower (lower)”, the meaning of not only an upward direction but also a downward direction based on one component may be included.

1 is a side view of an overhead type air conditioner for a vehicle according to an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a rear view of FIG. 1, and FIG. 4 is a plan view of FIG.

1 to 4, the vehicle overhead type air conditioning apparatus 10 according to an embodiment of the present invention may include an air conditioning case 100.

An air conditioning unit such as an evaporator and a blower fan may be mounted in the air conditioning case 100.

The air conditioning case 100 may include a lower case 110 and an upper cover 120 that closes an open upper surface of the lower case 110.

The lower case 110 may include a bottom portion 111 and a sidewall portion 113 formed on the bottom portion 111.

The sidewall portion 113 may be integrally formed with the bottom portion 111, but is not limited thereto.

The sidewall portion 113 may include a front portion 113a, a rear portion 113b, and a pair of side portions 113c connecting both ends of the front portion 113a and both ends of the rear portion 113b.

The front part 113a and the rear part 113b are connected to both ends of the bottom part 111 in the X-axis direction, while a pair of side parts 113c may be connected to both ends of the bottom part 111 in the Y-axis direction. . The X-axis direction and the Y-axis direction may be a Z-axis direction, for example, a vertical direction or a vertical direction, and the Y-axis direction may be a direction perpendicular to the X-axis direction. For example, the X-axis direction may be a front-rear direction of the vehicle, and the Y-axis direction may be the width direction of the vehicle.

The front part 113a and the rear part 113b are formed to be inclined with respect to the bottom part 111, for example, to form an obtuse angle, while the pair of side parts 113c are formed to be perpendicular to the bottom part 111 or a horizontal plane. It may be, but is not necessarily limited thereto.

A plurality of air intake ports 113a-1 penetrating through one surface and the other surface of the front portion 113a may be formed on the front portion 113a, and a plurality of air intake holes 113a-1 penetrating through the rear portion 113b may be formed on the front portion 113a. The air outlet (113b-1) of the may be formed. Accordingly, air may be introduced into the air conditioning case 100 through the air inlet 113a-1 by the blowing fan, and the introduced air is cooled to a predetermined temperature through the evaporator, and then the air outlet 113b-1 It may be discharged to the outside of the air conditioning case 100, that is, to the vehicle compartment.

A grill structure may be coupled to the air inlet 113a-1 and the air outlet 113b-1.

An input unit 113b-2 such as a dial or a touch panel may be disposed on the rear part 113b to receive an on/off signal of a fan motor driving a blower fan, a rotation speed, and the like.

A condensed water discharge hole 113c-1 penetrating through one side and the other side of the side portion 113c may be formed under the side portion 113c.

The condensed water discharge hole 113c-1 may provide a passage through which the condensed water generated from the surface of the evaporator is discharged to the outside of the air conditioning case 100, and the condensed water discharge pipe for transferring the discharged condensate to the condensate discharge hole 113c-1 ( Not shown) can be connected.

The bottom portion 111 between the pair of side portions 113c may have an upward convex curvature. That is, the bottom portion 111 may be formed to increase as it moves away from the pair of side portions 113c.

Accordingly, the condensed water that has fallen from the surface of the evaporator may flow to the left and right ends of the air conditioning case 100 to be smoothly discharged toward the condensed water discharge hole 113c-1.

The upper cover 120 may have a plate shape, but is not limited thereto.

5 is a plan view of a state in which the upper cover is removed in FIG. 4.

Referring to FIG. 5, an evaporator 200 and a blower fan 300 may be mounted in the air conditioning case.

The evaporator 200 and the blowing fan 300 may be sequentially disposed along the air flow direction by the blowing fan 300. For example, the blowing fan 300 may be disposed closer to the air outlet 113b-1 than the evaporator 200.

The evaporator 200 may cool air in contact with the evaporator 200 by the latent heat of evaporation of the refrigerant.

The refrigerant converted to a gaseous state in the evaporator 200 may be discharged through the first refrigerant pipe 210 connected to the evaporator 200, and a compressor (not shown), a condenser (not shown), and an expansion valve (not shown) After being converted into a low-temperature liquid state through sequentially, it may be re-introduced into the evaporator 200 through the second refrigerant pipe 220 connected to the evaporator 200.

The first refrigerant pipe 210 and the second refrigerant pipe 220 may be drawn out of the air conditioning case.

The blowing fan 300 may be rotated by the fan motor 310 to generate air flow from the air inlet 113a-1 to the air outlet 113b-1. The fan motor 310 may receive electricity from an external power source (not shown) connected through the electrical equipment wire 320.

The blowing fan 300 may be a cross flow fan whose rotation axis extends in the Y-axis direction.

The rotational speed of the fan motor 310 may be controlled by the speed control unit 330.

The speed control unit 330 may control the rotational speed of the fan motor 310 and the like according to a signal input through the input unit 113b-2. To this end, the speed control unit 330 may include a plurality of electrical resistance elements or variable resistors.

The lower case 110 may include a first dam 115, a second dam 117, a drain guide part 118, and a watertight partition wall 119.

The first dam 115, the second dam 117, and the drainage guide part 118 may protrude from the bottom part 111 to connect a pair of side parts 113c.

The first dam 115 may be disposed between the air inlet 113a-1 and the evaporator 200.

The first dam 115 may suppress the condensed water falling from the evaporator 200 and accumulated between the first dam 115 and the drainage guide 118 from being discharged to the vehicle compartment through the air inlet 113a-1. .

The second dam 117 may be disposed between the blowing fan 300 and the air outlet 113b-1.

The second dam 117 flows along the air flow direction from the evaporator 200 and falls after colliding with the blowing fan 300, and the condensed water accumulated between the second dam 117 and the drainage guide 118 is an air outlet ( 113b-1) can be prevented from being discharged into the vehicle compartment.

The drain guide part 118 may be disposed between the evaporator 200 and the blowing fan 300.

The drainage guide part 118 can guide the condensed water that has fallen from the evaporator 200 and accumulated between the first dam 115 and the drainage guide part 118 to the side part 113c where the condensate discharge hole 113c-1 is formed. have.

In addition, the drainage guide part 118 may suppress the condensed water from flowing toward the air outlet 113b-1 along the air flow direction.

That is, most of the condensed water may be guided to the condensed water discharge hole 113c-1 disposed between the first dam 115 and the drain guide part 118 by the drain guide part 118, and the blower fan 300 Some of the condensed water introduced into the second dam 117 may be guided to the condensed water discharge hole 113c-1 disposed between the second dam 117 and the drain guide unit 118.

The watertight partition wall 119 may protrude from the bottom part 111 to surround the speed control unit 330. Accordingly, it is possible to improve a problem in which condensed water accumulated in the bottom part 111 flows into or contacts the speed control unit 330 and causes a failure of the speed control unit 330.

The watertight partition wall 119 may form a cavity C on the bottom part 111 in which the speed control unit 330 is disposed.

Both ends of the watertight partition wall 119 may be connected to one of the pair of side parts 113c at the same time, whereby the cavity C may contact the side parts 113c. Accordingly, a through hole (not shown) in contact with the cavity C may be formed in the side portion 113c, and a connector for supplying electricity to the speed control unit 330 may be disposed in the through hole.

One end of the drainage guide portion 118 may be connected to the side portion 113c through the watertight partition wall 119.

6 is a cross-sectional view taken along A-A of FIG. 5, FIG. 7 is a cross-sectional view taken along B-B of FIG. 5, and FIG. 8 is a cross-sectional view taken along C-C of FIG.

5 and 6, the drain guide portion 118 may include a central portion 118a and both end portions 118b disposed at both ends of the central portion 118a in the Y-axis direction.

The central portion 118a and both ends 118b may be integrally formed, but are not limited thereto.

The central portion 118a may be connected to the side portion 113c through both ends 118b.

The upper edge of the central portion 118a may be disposed lower than the upper edge of both end portions 118b. For example, the upper edge of the central portion 118a and both ends 118b may extend parallel to the Y-axis direction, and the upper edge of the central portion 118a and the upper edge of both ends 118b are mutually in the Z-axis direction. Can be placed at a distance.

Accordingly, it is possible to reduce the possibility of overflow of condensed water collected on both ends of the bottom part 111 in the Y-axis direction due to the curvature of the bottom part 111.

In addition, as another example for achieving the above-described effect, the height H1 of both ends 118b in the Z-axis direction may be greater than the height H2 of the central portion 118a in the Z-axis direction.

In this case, the height in the Z-axis direction of the central portion 118a or both ends 118b may be the height in the Z-axis direction of the central portion 118a or both ends 118b, but is not limited thereto, and the minimum in the Z-axis direction It can be the height or the maximum height.

The upper edge of the watertight partition wall 119 may be disposed higher than the upper edge of the drainage guide part 118. For example, the upper edge of the watertight partition wall 119 may extend parallel to the Y-axis direction like the upper edge of the drainage guide portion 118, and the upper edge of the watertight partition wall 119 and the drainage guide portion 118 The upper corners of may be disposed to be spaced apart from each other in the Z-axis direction.

The evaporator 200 and/or the blowing fan 300 may be disposed between both ends 118b of the drainage guide 118 along the Y-axis direction.

That is, the evaporator 200 and/or the blowing fan 300 may be disposed to overlap with the central portion 118a of the drainage guide 118 in the X-axis direction.

To this end, the width W1 of the central portion 118a of the drainage guide portion 118 may be larger than the width W2 of the evaporator 200 and the width W3 of the blowing fan 300.

Therefore, by disposing the drainage guide part 118 between the evaporator 200 and the blower fan 300, the flow path area is reduced, thereby reducing the air volume or increasing the size of the air conditioning case or the air conditioning device in the Z-axis direction. Can be minimized.

Referring to FIG. 7, the first dam 115 may include a central portion 115a and both ends 115b disposed at both ends of the central portion 115a in the Y-axis direction.

The central portion 115a and both ends 115b may be integrally formed, but are not limited thereto.

The central portion 115a may be connected to the side portion 113c through both ends 115b.

The upper edge of the central portion 115a may be disposed lower than the upper edge of both end portions 115b. For example, the upper edge of the central portion 115a and both ends 115b may extend parallel to the Y-axis direction, and the upper edge of the central portion 115a and the upper edge of both ends 115b are mutually in the Z-axis direction. Can be placed at a distance.

Accordingly, it is possible to reduce the possibility that condensed water collected on both ends of the floor 111 in the Y-axis direction due to the curvature of the floor 111 overflows and is discharged into the vehicle through the air intake port.

A connection portion 115c may be formed between the central portion 115a and both ends 115b. The upper edge of the connection portion 115c may connect the upper edge of the central portion 115a and the upper edge of both ends 115b, and may be disposed to be inclined with respect to the Y-axis direction.

Referring to FIG. 8, the second dam 117 may include a central portion 117a and both ends 117b disposed at both ends of the central portion 117a in the Y-axis direction.

The central portion 117a and both ends 117b may be integrally formed, but are not limited thereto.

The central portion 117a may be connected to the side portion 113c through both ends 117b.

The upper edge of the central portion 117a may be disposed lower than the upper edge of both end portions 117b. For example, the upper edge of the central portion 117a and both ends 117b may extend parallel to the Y-axis direction, and the upper edge of the central portion 117a and the upper edge of both ends 117b are mutually in the Z-axis direction. Can be placed at a distance.

Accordingly, it is possible to reduce the possibility that condensed water collected on both ends of the floor 111 in the Y-axis direction overflows due to the curvature of the floor 111 and is discharged into the vehicle through the air outlet.

In the above, preferred embodiments of the present invention have been described, but those of ordinary skill in the art will add, change, delete or add components within the scope not departing from the spirit of the present invention described in the claims. Accordingly, the present invention can be variously modified and changed, and it will be said that this is also included within the scope of the present invention.

10: air conditioning device 100: air conditioning case
110: lower case 111: bottom
113: side wall portion 113a: front portion
113a-1: air intake 113b: rear
113b-1: air outlet 113b-2: input
113c: side part 113c-1: condensate discharge hole
115: first dam 115a: central portion
115b: both ends 115c: connection
117: second dam 117a: central part
117b: both ends 118: drainage guide portion
118a: central portion 118b: both ends
119: watertight bulkhead 120: upper cover
200: evaporator 210: first refrigerant pipe
220: second refrigerant pipe 300: blowing fan
310: fan motor 320: electronic product wire
330: speed control unit

Claims (11)

An air conditioning case having a lower case and an upper cover for closing an open upper surface of the lower case; And
Including an evaporator and a blowing fan disposed in the air conditioning case,
The lower case includes a bottom portion and a sidewall portion formed on the bottom portion,
The side wall portion includes a front portion having an air inlet, a rear portion having an air outlet, and a pair of side portions connecting the front portion and the rear portion and having a condensed water discharge hole,
The bottom portion has a convex curvature so as to increase away from the side portions of the pair,
The lower case is an overhead type air conditioner for a vehicle including a drain guide part protruding from the bottom part between the evaporator and the blowing fan to connect the pair of side parts.
The method of claim 1,
The drainage guide portion is an overhead type air conditioner for a vehicle in which the height of both ends is greater than the height of the central portion.
The method of claim 2,
The upper edge of the both ends of the vehicle overhead type air conditioner is disposed higher than the upper edge of the central portion.
The method of claim 3,
The evaporator and the blower fan are disposed between the both ends of the vehicle overhead type air conditioner.
The method of claim 3,
The width of the central part is larger than the width of the evaporator.
The method of claim 2,
A fan motor driving the blowing fan; And
Including a speed control unit for controlling the rotational speed of the fan motor,
The lower case includes a watertight partition wall formed on the bottom and surrounding the speed control unit,
The drainage guide portion is an overhead type air conditioner for a vehicle connected to the side portion through the watertight partition.
The method of claim 6,
The upper edge of the watertight partition wall is disposed higher than the upper edge of the drain guide portion overhead type air conditioner for a vehicle.
The method of claim 1,
The lower case includes a first dam and a second dam protruding from the bottom portion and connecting the pair of side portions,
The first dam is disposed between the air inlet and the evaporator,
The second dam is an overhead type air conditioner for a vehicle disposed between the blowing fan and the air outlet.
The method of claim 8,
The first dam and the second dam is an overhead type air conditioner for a vehicle in which upper edges of both ends are disposed higher than the upper edge of the central portion.
The method of claim 1,
The blower fan is an overhead type air conditioner for a vehicle disposed closer to the air outlet than the evaporator.
The method of claim 10,
The blower fan is an overhead type air conditioner for a vehicle that is a cross flow fan.

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