JP4431914B2 - Automotive air conditioner - Google Patents

Automotive air conditioner Download PDF

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Publication number
JP4431914B2
JP4431914B2 JP36547899A JP36547899A JP4431914B2 JP 4431914 B2 JP4431914 B2 JP 4431914B2 JP 36547899 A JP36547899 A JP 36547899A JP 36547899 A JP36547899 A JP 36547899A JP 4431914 B2 JP4431914 B2 JP 4431914B2
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JP
Japan
Prior art keywords
air
condensed water
vehicle
chamber
unit case
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP36547899A
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Japanese (ja)
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JP2001180255A (en
Inventor
隆 原口
勝之 池田
大助 荒木
明利 野口
秀樹 長野
Original Assignee
株式会社ヴァレオサーマルシステムズ
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Priority to JP36547899A priority Critical patent/JP4431914B2/en
Publication of JP2001180255A publication Critical patent/JP2001180255A/en
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Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automotive air conditioner, and more particularly to an automotive air conditioner in which cooling and heating heat exchangers are arranged in the longitudinal direction of the automobile.
[0002]
[Prior art]
FIG. 5 is a longitudinal sectional view of a conventional automobile air conditioner.
[0003]
This automotive air conditioner includes a blower 302, an evaporator 303 that cools the air sucked by the blower 302, a heater core 304 that heats the air from the evaporator 303, and air that passes through and does not pass through the heater core 304. And an air mix door 305 that adjusts the ratio of the unit and a unit case 306 that accommodates these.
[0004]
The blower 302 is located above the evaporator 303 in the vehicle vertical direction V. The blower 302 has a fan 302a and a motor (not shown) that drives the fan 302a. An intake box (not shown) is connected to the blower 302.
[0005]
The evaporator 303 is disposed in front of the heater core 304 in the vehicle longitudinal direction H.
[0006]
Between the evaporator 303 and the heater core 304, a convex portion 308 for blocking the condensed water flowing down from the evaporator 303 from scattering to the heater core 304 side and guiding the air that has passed through the evaporator 303 to the air mix door 305 is located. The convex portion 308 is formed integrally with the unit case 306, and the air mix door 305 is located above the vehicle vertical direction V.
[0007]
In the unit case 306, a cold air bypass passage 314 through which air that has passed through the evaporator 303 flows, a hot air passage 315 through which air that has passed through the heater core 304 flows, air that is downstream of the cold air bypass passage 314 and air that is downstream of the hot air passage 315. An air mix space 316 is formed. The air mix space 316 is located downstream of the air mix door 305. In the unit case 306, a differential blow opening 309, a vent blow opening 310, and a foot blow opening 311 are formed downstream of the air mix space 316.
[0008]
A drain port 312 for discharging condensed water flowing down from the surface of the evaporator 303 to the outside of the unit case 306 is formed on the bottom surface portion 306 b of the unit case 306.
[0009]
Next, the operation of this automobile air conditioner will be described.
[0010]
When the blower 302 is activated, air flows into the intake box and is introduced into the unit case 306. The air introduced into the unit case 306 goes to the evaporator 303.
[0011]
When the blowing mode is set to the bi-level mode and the opening degree of the air mix door 305 is 50%, a part of the air that has passed through the evaporator 303 goes to the air mix space 316 through the cold air bypass passage 314, and the rest is the heater core. Head to 304.
[0012]
As the air passes through the evaporator 303, it is cooled. Condensed water on the surface of the evaporator 303 flows down to the bottom surface portion 306b of the unit case 306 and is discharged to the outside from the drain port 312.
[0013]
The air that has passed through the heater core 304 goes to the air mix space 316 through the hot air passage 315. As the air passes through the heater core 304, it is heated.
[0014]
The air downstream of the cold air bypass passage 314 and the air downstream of the hot air passage 315 merge in the air mix space 316, are mixed, and are blown out of the unit case 306 from the vent and foot blowing openings 310 and 311.
[0015]
Figure 6 is a sectional view of another conventional automotive air conditioner, Fig. 7 is a sectional view taken along the line XII-XII of FIG. Portions common to the conventional example of FIG. 5 described above are denoted by the same reference numerals and description thereof is omitted.
[0016]
5 described above is a so-called blower integrated type in which the blower 302, the evaporator 303, and the heater core 304 are incorporated in a single unit case. However, the automotive air conditioner in FIG. 6 is independent of each other. A blower unit (not shown) and an air conditioner unit 452 are integrally connected. In this automotive air conditioner, a partition plate 408 is integrally provided in the unit case 406 instead of the convex portion 308.
[0017]
A blower unit is connected to the side surface of the air conditioner unit 452.
[0018]
An intake box (not shown) is connected to the blower unit.
[0019]
The air conditioner unit 452 includes an evaporator 303, a heater core 304, an air mix door 305, and a unit case 406.
[0020]
On one side surface of the unit case 406, an air inlet 406a for taking in air of the blower unit into the unit case 406 is formed. The opening surface of the air inlet 406a is substantially perpendicular to the air passage surface 303a of the evaporator 303.
[0021]
A chamber 430 is provided in the unit case 406 on the upstream side of the evaporator 303. The chamber 430 is a space where the flow of air entering the unit case 406 is bent at a right angle toward the evaporator 303.
[0022]
A stopper 432 that prevents the condensed water adhering to the surface of the evaporator 303 from flowing backward from the inside of the unit case 406 to the outside of the unit case 406 via the air introduction port 406a is provided at the lower end of the peripheral edge of the air introduction port 406a. It is provided so as to block the lower part of the mouth 406a.
[0023]
A drain port 412 for discharging condensed water to the outside of the unit case 406 is formed on the bottom surface portion 406 b of the unit case 406.
[0024]
When the blower unit is activated, air flows into the intake box and is introduced into the unit case 406 via the air introduction port 406a.
[0025]
The air flow introduced into the unit case 406 is bent at a substantially right angle in the chamber 430 and heads toward the evaporator 303.
[0026]
[Problems to be solved by the invention]
As described above, in the air conditioners for both automobiles, the drain ports 312 and 412 are formed in the bottom surface portions 306b and 406b of the unit cases 306 and 406, and the condensed water flowing down from the surface of the evaporator 303 is discharged to the outside. However, when a vehicle travels on a steep slope, suddenly accelerates or decelerates, a phenomenon may occur in which condensed water flows backward to the upstream side of the evaporator 303 due to the action of gravity or the action of inertia. .
[0027]
In the automobile air conditioner of FIG. 5 , since the condensed water flows backward as described above, the evaporator 303 is submerged, and the condensed water decreases the cooling capacity of the evaporator 303.
[0028]
In the automobile air conditioner shown in FIG. 6 , when the condensed water flows backward into the chamber 430 and the automobile suddenly changes direction to the left or right, the condensed water accumulated in the chamber 430 is moved to the vehicle left-right direction RL by the action of inertia. May move. As a result, the condensed water tends to enter the blower unit case 406 through the air inlet 406 a located on the side surface of the unit case 406. In order to prevent such a backflow phenomenon, a stopper 432 is provided at the air inlet 406a. However, this stopper 432 becomes a ventilation resistance, and the amount of air sent from the blower unit to the unit case 406 is reduced.
[0029]
The present invention has been made in view of the inconvenient circumstances of the automobile air conditioner shown in FIG. 6 , and its problem is to prevent the backflow of condensed water.
[0030]
[Means for Solving the Problems]
An automotive air conditioner according to claim 1 is a cooling heat exchanger that cools air, a heating heat exchanger that heats air from the cooling heat exchanger, and a unit case that accommodates them. The two heat exchangers are arranged in the vehicle front-rear direction, and an air inlet for introducing air from the blower is formed on one side surface of the unit case, and the opening surface of the air inlet is used for the cooling. In an automotive air conditioner that is substantially perpendicular to the air passage surface of the heat exchanger, a chamber is provided upstream of the cooling heat exchanger and below the air inlet of the vehicle in the vehicle vertical direction. There is provided a discharge port for discharging the accumulated condensed water to the outside, a plurality of first stoppers made of plates parallel to the vehicle front-rear direction, and a plurality of first stoppers that block the flow of the condensed water accumulated in the chamber in the vehicle left-right direction, A second stopper comprising a plurality of plates which are combined so as to be orthogonal to the stopper and prevent the flow of the condensed water accumulated in the chamber in the vehicle front-rear direction and parallel to the vehicle left-right direction is provided. 2. A slit is formed in the stopper to allow condensed water in the chamber to escape to the drain.
[0031]
As described above, in the chamber located immediately upstream of the cooling heat exchanger and below the air inlet in the vehicle vertical direction, the first stopper that prevents the flow of the condensed water accumulated in the chamber in the vehicle horizontal direction. And a second stopper orthogonal to this, when the vehicle suddenly changes direction to the left or right, the first stopper blocks the flow of the condensate in the vehicle left-right direction, and the condensate is the air inlet. It becomes difficult to flow backward to the outside of the unit case.
[0032]
In addition, since the second stopper is housed in the chamber, the second stopper hinders the flow of condensed water in the vehicle front-rear direction when the vehicle goes up and down a steep slope, or suddenly accelerates or decelerates. Water is less likely to flow backward in the vehicle longitudinal direction.
[0033]
As described above, since both plates are combined so as to be orthogonal to each other, the flow of condensed water is disturbed both in the longitudinal direction of the vehicle and in the lateral direction of the vehicle, and the condensed water flows backward to the outside of the unit case through the air inlet. It becomes difficult to do.
[0034]
As described above, the drain port for discharging condensed water to the outside is formed on the bottom surface of the unit case, and the slits for releasing the condensed water in the chamber to the drain port are formed in the first and second stoppers. Condensate discharge is promoted.
[0035]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0036]
1 is a front view showing an automotive air conditioner according to an embodiment of the present invention , FIG. 2 is a cross-sectional view taken along line VV in FIG. 1 , FIG. 3 is a cross-sectional view taken along line VI-VI in FIG . These are sectional drawings which follow the VII-VII line of FIG.
[0037]
The air conditioner for automobiles according to the embodiment of the present invention is configured by connecting a blower unit 151 and an air conditioner unit 152. Further, in this automobile air conditioner, the partition plate 108 is provided integrally with the unit case 106. Further, mode switching doors 117 and 118 capable of independently opening and closing the differential and vent blowing openings 9 and 10 are provided.
[0038]
A blower unit 151 is connected to a side surface of the air conditioner unit 152.
[0039]
An intake box 153 is connected to the blower unit 151. Intake box 153 contains a filter (not shown). The blower unit 151 includes a fan (not shown), a motor (not shown) that drives the fan, and a blower unit case 151a that accommodates these.
[0040]
The air conditioner unit 152 includes an evaporator 3 that cools air from the blower unit 151, a heater core 4, an air mix door 5, and a unit case 106 that accommodates these.
[0041]
On one side surface of the unit case 106, an air inlet 106a for taking the air of the blower unit 151 into the unit case 106 is formed. The opening surface of the air inlet 106 a is substantially perpendicular to the air passage surface 3 a of the evaporator 3.
[0042]
A chamber 130 is provided in the unit case 106 on the upstream side of the evaporator 3. The chamber 130 is a space where the flow of air entering the unit case 106 is bent in the direction of the air passage surface 3 a of the evaporator 3.
[0043]
The chamber 130 includes a plurality of plates (first stoppers) 132 that block the flow of condensed water accumulated in the chamber 130 in the vehicle left-right direction RL, and a plurality of plates (second stoppers) 133 that block the flow in the vehicle front-rear direction H. Are arranged so as to be orthogonal to each other. The plate 132 is substantially parallel to the vehicle front-rear direction H, and the plate 133 is substantially parallel to the vehicle left-right direction RL.
[0044]
Both plates 132 and 133 are formed with slits 134 for allowing condensed water in the chamber 130 to escape to the drain port 112 described later.
[0045]
A drain port 112 for discharging condensed water to the outside of the unit case 106 is formed on the bottom surface portion 106 b of the unit case 106.
[0046]
Next, the operation of the automotive air conditioner when the blowing mode is set to the bi-level mode will be described as an example. When the bi-level mode is set, as shown in FIG. 2 , the air mix door 5 and the mode switching door 19 are in an intermediate position, the mode switching door 117 is closed, and the mode switching door 118 is opened.
[0047]
When the blower unit 151 is operated, air flows into the intake box 153 and this air is introduced into the unit case 106.
[0048]
The flow of air introduced into the unit case 106 is bent at a substantially right angle in the chamber 130 and heads toward the evaporator 3.
[0049]
Since the plate 133 is disposed in the chamber 130, the plate 133 prevents the flow of the condensed water in the vehicle front-rear direction (in FIG. 3 ) H when the automobile goes up and down the slope or suddenly accelerates or decelerates. As a result, the reverse flow of the condensed water flowing down from the evaporator 3 is suppressed.
[0050]
Further, since the plate 132 is disposed in the chamber 130, the plate 132 prevents the flow of the condensed water in the vehicle left-right direction RL when the vehicle suddenly changes direction to the left or right. As a result, the condensed water is prevented from entering the blower unit case 151a through the air inlet 106a located on the side of the chamber 130.
[0051]
The condensed water accumulated in the chamber 130 flows out of the chamber 130 through the slit 134 and is discharged from the drain port 112 to the outside of the unit case 106.
[0052]
According to this embodiment, since the plate 132 is accommodated in the chamber 130, when the automobile suddenly changes direction to the left or right, since the plate 132 suppresses the scattering of the condensed water, the condensed water is air. Intrusion into the blower unit case 151a through the introduction port 106c can be prevented.
[0053]
Further, since the plate 133 is accommodated in the chamber 130, the flow of the condensed water accumulated in the chamber 130 in the vehicle front-rear direction H is suppressed by the plate 133, and the backflow of the condensed water can be suppressed.
[0054]
Furthermore, since both plates 132 and 133 are combined so as to be orthogonal to each other, the backflow of the condensed water can be suppressed more reliably.
[0055]
Moreover, since the slits 134 for letting the condensed water in the chamber 130 escape to the drain port 112 are formed in both the plates 132 and 133, discharge of the condensed water is promoted.
[0056]
Furthermore, since the opening area of the air inlet 106a is larger than that of the conventional example, the amount of air introduced into the unit case 106 is increased.
[0057]
In this embodiment, the plates 132 and 133 are used as members that prevent the condensed water from scattering, but the members are not limited to the plates 132 and 133 as long as the members can prevent the flow of the condensed water.
[0058]
【The invention's effect】
[0059]
According to the automotive air conditioner of the first aspect of the present invention, it is difficult for the condensed water to flow backward to the outside of the unit case through the air inlet. Then drainage of condensed water is promoted.
[Brief description of the drawings]
FIG . 1 is a front view showing an automotive air conditioner according to an embodiment of the present invention.
FIG . 2 is a cross-sectional view taken along line VV in FIG.
FIG . 3 is a partial cross-sectional view taken along line VI-VI in FIG.
4 is a cross-sectional view taken along line VII-VII in FIG. 2. FIG.
FIG . 5 is a longitudinal sectional view of a conventional automotive air conditioner.
FIG . 6 is a cross-sectional view of another conventional automobile air conditioner.
7 is a cross-sectional view taken along line XII-XII in FIG.
[Explanation of symbols]
2 Blower 3 Evaporator (Cooling heat exchanger)
3a Air passage surface 4 Heater core (heat exchanger for heating)
130 Chamber 132 Stopper (First Stopper)
133 Stopper (second stopper)
134 Slit H Vehicle longitudinal direction RL Vehicle lateral direction V Vehicle vertical direction

Claims (1)

  1.   A cooling heat exchanger that cools the air, a heating heat exchanger that heats the air from the cooling heat exchanger, and a unit case that accommodates the heat exchanger, the heat exchangers extending in the vehicle longitudinal direction And an air inlet for introducing air from the blower is formed on one side surface of the unit case, and the opening surface of the air inlet is substantially perpendicular to the air passage surface of the cooling heat exchanger. In an automobile air conditioner, a chamber is provided upstream of the cooling heat exchanger and below the air inlet in the vehicle vertical direction, and a discharge port for discharging condensed water accumulated in the chamber to the outside is provided. And a plurality of first stoppers made of plates parallel to the vehicle front-rear direction and hindering the flow of condensed water accumulated in the chamber in the vehicle left-right direction. A plurality of second stoppers made of plates parallel to the left-right direction of the vehicle are provided to prevent the flow of condensed water accumulated in the vehicle in the front-rear direction of the vehicle, and further, the condensed water in the chamber is supplied to the first and second stoppers. An automotive air conditioner, wherein a slit for escaping to the drain is formed.
JP36547899A 1999-12-22 1999-12-22 Automotive air conditioner Expired - Fee Related JP4431914B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP36547899A JP4431914B2 (en) 1999-12-22 1999-12-22 Automotive air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP36547899A JP4431914B2 (en) 1999-12-22 1999-12-22 Automotive air conditioner

Publications (2)

Publication Number Publication Date
JP2001180255A JP2001180255A (en) 2001-07-03
JP4431914B2 true JP4431914B2 (en) 2010-03-17

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Application Number Title Priority Date Filing Date
JP36547899A Expired - Fee Related JP4431914B2 (en) 1999-12-22 1999-12-22 Automotive air conditioner

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003034114A (en) * 2001-07-19 2003-02-04 Zexel Valeo Climate Control Corp Air-conditioning device for vehicle
US7407001B2 (en) * 2004-09-30 2008-08-05 Valeo Climate Control Corp. HVAC with detached deflector
JP4990590B2 (en) * 2006-09-28 2012-08-01 マツダ株式会社 Air conditioner for vehicles
US9174511B2 (en) * 2009-07-10 2015-11-03 Keihin Corporation Vehicular air conditioning apparatus
JP6339920B2 (en) * 2014-10-22 2018-06-06 株式会社ヴァレオジャパン Air conditioner for vehicles
DE112017003689T5 (en) * 2016-07-22 2019-04-04 Denso Corporation Fahrzeugluftkonditioniereinheit

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