JP5712972B2 - Vehicle heat exchange device - Google Patents

Description

  The present invention relates to a vehicle heat exchange device including a plurality of heat exchangers.

  As this type of conventional vehicle heat exchange device, there is one disclosed in Patent Document 1. This vehicle heat exchanging device 100 is provided in an engine room of a vehicle (not shown), and houses a water-cooled condenser 103 of a refrigeration cycle in a tank portion 102 of a sub-radiator 101 as shown in FIGS. . The sub-radiator 101 includes a plurality of tubes 104, a plurality of outer fins 105 disposed between the adjacent tubes 104, a pair of inlet side tank portions 106 disposed at both ends in the longitudinal direction of the plurality of tubes 104, and And an outlet side tank unit 102. The inlet side tank unit 106 is provided with an inflow port 107 through which cooling water for control equipment (not shown) flows, and the outlet side tank unit 102 is provided with an outflow port 108 through which cooling water flows out. The water-cooled condenser 103 has a plurality of tubes 111 that are stacked at intervals through which cooling water flows. At both end positions of each tube 111, an inlet 109 and an outlet 110 through which refrigerant for air conditioning of the passenger compartment flows in and out are provided.

  In the above configuration, the cooling water for the control device that has flowed in from the inflow port 107 flows from the inside of one tank portion 106 to the other tank portion 102 through the plurality of tubes 104 and is discharged from the outflow port 108. In this way, the refrigerant flowing in the sub-radiator 101 actively exchanges heat with the external air passing outside the tubes 104 in the process of passing through the tubes 104, whereby the temperature of the cooling water for the control device is lowered. . The passenger compartment air-conditioning refrigerant that has flowed in from the inlet 109 passes through the tubes 111 of the water-cooled condenser 103 and is discharged from the outlet 110. In the process of passing through the tube 111 of the water-cooled condenser 103, heat is exchanged with the cooling water passing through the tank portion 102, thereby lowering the temperature of the refrigerant for vehicle compartment air conditioning.

JP 2010-127508 A

  By the way, in the vehicle heat exchanging device 100 in which the water-cooled condenser 103 of the refrigeration cycle is accommodated in the tank portion 102 of the sub-radiator 101, the water-cooled condenser 103 is damaged and high-pressure refrigerant leaks into the tank portion 102 of the sub-radiator 101. Then, the pressure in the tank portion 102 becomes high, and the sub radiator 101 and the like may be damaged, and the refrigerant may be ejected from the sub radiator 101 into the engine room of the vehicle. As a result, since the jetted refrigerant contains the gas phase refrigerant and oil of the refrigeration cycle, if this oil hits a belt for driving, for example, auxiliary machinery in the engine room, it causes belt slip and the like. There is a problem of becoming.

  Then, an object of this invention is to provide the vehicle heat exchange apparatus which can prevent the malfunction resulting from the refrigerant | coolant ejected from the 1st heat exchanger being applied to the apparatus in an engine room as much as possible.

The present invention includes a first heat exchanger in which a first refrigerant flows, and a tank portion of the first heat exchanger, in which a high-pressure second refrigerant flows, and between the second refrigerant and the first refrigerant And a second heat exchanger for exchanging heat in the vehicle, provided at the upper part of the tank portion of the first heat exchanger, and when the internal pressure exceeds a specified pressure, A pressure release valve that opens to the top and a jet direction regulating portion that regulates the jet direction of the refrigerant jetted from the pressure release valve, and the jet direction regulating portion is disposed above the first heat exchanger. It is a recessed part provided in the guard, The said recessed part is arrange | positioned in the position surrounding the said pressure release valve, It is characterized by the above-mentioned.

  The ejection direction regulating portion is an upper guard disposed above the tank portion of the first heat exchanger, and a regulating wall provided on the upper guard, and the regulating wall is located behind the pressure release valve in the vehicle. It is preferable to arrange | position.

  The ejection direction regulating portion is an upper guard disposed above the tank portion of the first heat exchanger, and a regulating wall protruding from the tank portion and contacting the upper guard, and the regulating wall is the pressure It is preferable that it is arrange | positioned at the vehicle back of an open valve.

  The ejection direction regulating portion is a regulating wall that protrudes from the tank portion of the first heat exchanger, and the regulating wall is preferably disposed behind the pressure release valve.

  It is preferable that the pressure release valve is provided in a cap attached to the tank portion of the first heat exchanger.

  According to the present invention, when the high-pressure refrigerant of the second heat exchanger leaks into the tank part of the first heat exchanger and the internal pressure of the tank part exceeds the specified pressure, the inside of the tank part is brought into the atmosphere by the pressure release valve. Since it opens, it can prevent that a 1st heat exchanger etc. are damaged and a refrigerant | coolant ejects in the engine room of a vehicle. Further, since the injection direction of the refrigerant from the pressure release valve is restricted by the injection direction restricting portion, the oil contained in the injected refrigerant is applied to a belt for driving auxiliary machinery in the engine room, for example. Is prevented. Thereby, the malfunction resulting from the refrigerant | coolant ejected from the 1st heat exchanger being applied to the apparatus in an engine room can be prevented as much as possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vehicle front portion including a vehicle heat exchange device according to a first embodiment of the present invention. FIG. 3 is an exploded perspective view of the front end module according to the first embodiment of this invention. 1 is a configuration diagram of a vehicle heat exchange device according to a first embodiment of the present invention. 1 is a schematic perspective view of a vehicle heat exchange device according to a first embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a main part of a vehicle heat exchange device and an upper guard, showing a first embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The 1st Embodiment of this invention is shown, (a) is a schematic side view of the heat exchanger apparatus for vehicles, (b) is a figure explaining the cross-sectional shape of an upper guard. FIG. 5 is a perspective view of main parts of a heat exchange device for a vehicle and an upper guard, showing a second embodiment of the present invention. FIG. 3 is a schematic side view of a heat exchange device for a vehicle, showing a second embodiment of the present invention. FIG. 6 is a perspective view of main parts of a heat exchange device for a vehicle and an upper guard according to a third embodiment of the present invention. FIG. 5 is a schematic side view of a heat exchanger for a vehicle, showing a third embodiment of the present invention. FIG. 9 is a perspective view of a main part of a vehicle heat exchange device according to a fourth embodiment of the present invention. FIG. 7 is a schematic side view of a heat exchange device for a vehicle, showing a fourth embodiment of the present invention. FIG. 10 is a perspective view of main parts of a heat exchange device for a vehicle, showing a fifth embodiment of the present invention. FIG. 9 is a cross-sectional view of a tank portion of a sub radiator according to a fifth embodiment of the present invention. It is a perspective view of the heat exchanger apparatus for vehicles of a prior art example. It is sectional drawing of the tank part of the sub radiator provided in the heat exchanger apparatus for vehicles of a prior art example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
1 to 6 show a first embodiment of the present invention.

  As shown in FIGS. 1 and 2, a front end module 2 is provided at the front portion of the vehicle 1. Behind the front end module 2 is formed an engine room 30 that houses the engine 3 as a prime mover, and an upper portion is covered with a bonnet cover 31. A belt 32 for driving auxiliary machines (not shown) is attached to the front side of the engine 3. The front end module 2 includes a bumper fascia 21, a bumper reinforcement 22 that reinforces the bumper fascia 21, and a heat exchange support 23 attached to the bumper reinforcement 22. The heat exchanger support 23 includes an upper guard 24 provided above a sub radiator 6 described later.

  The vehicle heat exchanging device 4A is provided in front of the engine 3 in the vehicle and is attached to a heat exchange support 23 or the like. As shown in FIGS. 3 and 4, a first refrigerant (cooling water, antifreeze liquid) is contained therein. The sub-radiator 6 (first heat exchanger) for cooling the electric drive unit 5 and the second refrigerant (air-conditioning refrigerant) flow inside to cool the vehicle interior, that is, the air conditioner Water-cooled condenser 7 (second heat exchanger).

  The vehicle heat exchanger 4A includes a main radiator 8 for cooling the engine 3 and an air-cooled condenser 9 which is another condenser for the air conditioner.

  The water-cooled condenser 7 and the air-cooled condenser 9 are connected in series in the refrigeration cycle with the water-cooled condenser 7 upstream. The second refrigerant that has been brought to high temperature and high pressure by the compressor first flows into the water-cooled condenser 7 and then flows into the air-cooled condenser 9.

  The sub-radiator 6 is disposed on the upstream surface side of the cooling air of the main radiator 8 and in the upper half region. The sub-radiator 6 mainly includes a core portion in which tubes 61 and outer fins 62 are alternately stacked, and a pair of tank portions 63 and 64 fixed to both ends of the core portion.

  The air-cooled condenser 9 is arranged on the upstream surface side of the cooling air of the main radiator 8 and in the lower half region. The air-cooled capacitor 9 is mainly composed of a core portion in which tubes 91 and outer fins 92 are alternately stacked, and a pair of tank portions 93 and 94 fixed to both ends of the core portion.

  The main radiator 8 is mainly composed of a core portion in which tubes (not shown) and outer fins (not shown) are alternately stacked, and a pair of tank portions 83 and 84 fixed to both ends of the core portion. Has been. Then, heat exchange is performed between the first refrigerant that flows in the tubes (not shown), 61, 91 and the cooling air that flows outside the tubes (not shown), 61, 91, to thereby achieve the first. The refrigerant is cooled.

  Next, the water-cooled capacitor 7 will be described. The water-cooled condenser 7 is disposed in the outlet side tank portion 64 of the sub radiator 6. The water-cooled condenser 7 has a plurality of tubes (not shown) arranged in parallel at intervals. Refrigerant inlet / outlet communication holes communicating with each other are provided at both end positions in the tube. The refrigerant flows in and out of the tube through the pair of refrigerant inlet / outlet communication holes.

  In the water-cooled condenser 7 configured as described above, heat exchange is performed between the second refrigerant flowing in the condenser 7 and the first refrigerant flowing in the tank of the condenser 7, thereby cooling the second refrigerant.

  As shown in FIGS. 5 and 6, a pressure release valve 65 is provided above the tank portion 64 of the sub-radiator 6 to open the inside to the atmosphere when the internal pressure of the tank portion 64 exceeds a specified pressure. At the position of the upper guard 24 disposed above the pressure release valve 65, a recess 25 is also provided as a jet direction restricting portion. The recess 25 is disposed so as to surround the pressure relief valve 65. Since the concave portion 25 is formed by pressing, a convex portion 26 protruding upward is formed on the surface of the upper guard 24.

  With the above configuration, when the high-pressure refrigerant in the water-cooled condenser 7 leaks into the tank portion 64 of the sub-radiator 6 and the internal pressure of the tank portion 64 exceeds the specified pressure, the pressure relief valve 65 causes the inside of the tank portion 64 to be atmospheric. Since the internal pressure of the tank portion 64 decreases, the sub-radiator 6 and the like can be prevented from being damaged and the refrigerant can be prevented from being ejected into the engine room 30 of the vehicle 1. Further, since the internal pressure of the tank part 64 exceeds the specified pressure, the refrigerant ejected from the pressure release valve 65 is blocked by the concave portion 25 of the upper guard 24 arranged at a position surrounding the upper side of the pressure release valve 65. Is restricted from being directly injected from the pressure release valve 65 to the rear of the vehicle, and is also prevented from being injected upward from the pressure release valve 65 and thereafter dropping or scattering to the rear of the vehicle.

  As mentioned above, in this 1st Embodiment, the malfunction resulting from the refrigerant | coolant ejected from the sub-radiator 6 being applied to apparatuses, such as the engine 3 in the engine room 30, the belt 32, can be prevented as much as possible.

(Second Embodiment)
7 and 8 show a second embodiment of the present invention. In the vehicle heat exchanging device 4B according to the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, the description thereof is omitted, and only different components are described. .

  As shown in FIGS. 7 and 8, the vehicle heat exchanging device 4 </ b> B according to the present embodiment is disposed above the pressure release valve 65 as an ejection direction regulating portion that regulates the ejection direction of the refrigerant ejected from the pressure relief valve 65. The upper guard 24 is provided with a restriction wall 27 provided on the upper guard 24. The restriction wall 27 is disposed behind the pressure release valve 65 in the vehicle.

  Since other configurations are the same as those of the first embodiment, the description will be omitted to avoid redundant description. The same components in the drawings are denoted by the same reference numerals for clarification.

  Also in the second embodiment, as in the first embodiment, the high-pressure refrigerant in the water-cooled condenser 7 leaks into the tank part 64 of the sub-radiator 6, and the internal pressure of the tank part 64 reaches the specified pressure. If exceeded, the inside of the tank part 64 is opened to the atmosphere by the pressure release valve 65, and the internal pressure of the tank part 64 decreases, so that the sub-radiator 6 and the like are damaged, and the refrigerant jets into the engine room 30 of the vehicle 1. Can be prevented. Further, since the internal pressure of the tank part 64 exceeds the specified pressure, the refrigerant ejected from the pressure release valve 65 is blocked by the restriction wall 27 on the vehicle rear side of the pressure release valve 65 and the upper guard 24 above, so that the refrigerant is pressurized. Direct injection from the release valve 65 to the rear of the vehicle is restricted, and injection from the pressure release valve 65 to the upper side, and thereafter dropping or scattering to the rear of the vehicle is also restricted.

  As described above, also in the second embodiment, it is possible to prevent problems caused by the refrigerant jetted from the sub-radiator 6 being applied to devices such as the engine 3 and the belt 32 in the engine room 30 as much as possible.

(Third embodiment)
9 and 10 show a third embodiment of the present invention. In the vehicle heat exchanging device 4C according to the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different components are described. .

  As shown in FIGS. 9 and 10, the vehicle heat exchanging device 4 </ b> C according to the present embodiment is disposed above the pressure release valve 65 as a jet direction regulating portion that regulates the jet direction of the refrigerant jetted from the pressure release valve 65. The upper guard 24 that protrudes from the tank portion 64 and the upper end of the upper guard 24 are inserted into the receiving portion 28 of the upper guard 24. The restriction wall 66 is disposed behind the pressure release valve 65 in the vehicle.

  Since other configurations are the same as those of the first embodiment, the description will be omitted to avoid redundant description. The same components in the drawings are denoted by the same reference numerals for clarification.

  Also in the third embodiment, as in the first embodiment, the high-pressure refrigerant of the water-cooled condenser 7 leaks into the tank portion 64 of the sub-radiator 6 and the internal pressure of the tank portion 64 exceeds the specified pressure. Then, the inside is opened to the atmosphere by the pressure release valve 65, and the internal pressure of the tank portion 64 is reduced. Therefore, it is possible to prevent the sub-radiator 6 from being damaged and the refrigerant from being ejected into the engine room 30 of the vehicle 1. In addition, since the internal pressure of the tank part 64 exceeds the specified pressure, the refrigerant ejected from the pressure release valve 65 is blocked by the restriction wall 66 on the vehicle rear side of the pressure release valve 65 and the upper upper guard 24, so that the refrigerant is pressurized. Direct injection from the release valve 65 to the rear of the vehicle is restricted, and injection from the pressure release valve 65 to the upper side, and thereafter dropping or scattering to the rear of the vehicle is also restricted.

  As described above, also in the third embodiment, it is possible to prevent problems caused by the refrigerant sprayed from the sub-radiator 6 being applied to devices such as the engine 3 and the belt 32 in the engine room 30 as much as possible.

(Fourth embodiment)
11 and 12 show a fourth embodiment of the present invention. In the vehicle heat exchanging device 4D according to the fourth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different components are described. .

  As shown in FIGS. 11 and 12, the vehicle heat exchanging device 4 </ b> D according to the present embodiment is configured from a tank portion 64 of the sub-radiator 6 as a jet direction regulating portion that regulates the jet direction of the refrigerant jetted from the pressure release valve 65. A protruding regulating wall 67 is provided. The restriction wall 67 is disposed behind the pressure release valve 65 in the vehicle.

  Since other configurations are the same as those of the first embodiment, the description will be omitted to avoid redundant description. The same components in the drawings are denoted by the same reference numerals for clarification.

  Also in the fourth embodiment, when the high-pressure refrigerant of the water-cooled condenser 7 leaks into the tank part 64 of the sub-radiator 6 and the internal pressure of the tank part 64 exceeds the specified pressure, the tank part 64 is driven by the pressure release valve 65. Is opened to the atmosphere, and the internal pressure of the tank portion 64 is reduced, so that it is possible to prevent the sub-radiator 6 and the like from being damaged and the refrigerant from being ejected into the engine room 30 of the vehicle 1. Further, since the refrigerant jetted from the pressure release valve 65 because the internal pressure of the tank portion 64 exceeds the specified pressure, the refrigerant is blocked by the regulation wall 67 at the rear of the vehicle, so that the refrigerant is directly injected from the pressure release valve 65 to the rear of the vehicle. Is regulated.

  As described above, also in the fourth embodiment, it is possible to prevent problems caused by the refrigerant jetted from the sub-radiator 6 being applied to devices such as the engine 3 and the belt 32 in the engine room 30 as much as possible.

(Fifth embodiment)
13 and 14 show a fifth embodiment of the present invention. In the vehicle heat exchanging device 4E according to the fifth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, the description thereof is omitted, and only different components are described. .

  As shown in FIGS. 13 and 14, in the vehicle heat exchanging device 4 </ b> E of the present embodiment, the pressure release valve 65 is provided in a cap 69 that is attached to the refrigerant hole 68 in the upper portion of the tank portion 64 of the sub-radiator 6. . The refrigerant hole 68 is provided for injecting the first refrigerant (coolant) into the cooling water cycle for cooling the electric drive unit 5 and the like.

  Since other configurations are the same as those of the first embodiment including the configuration of the ejection direction restricting portion, the description will be omitted to avoid redundant description. The same components in the drawings are denoted by the same reference numerals for clarification.

  Also in the fifth embodiment, as in the first embodiment, the high-pressure refrigerant in the water-cooled condenser 7 leaks into the tank portion 64 of the sub-radiator 6, and the internal pressure of the tank portion 64 reaches the specified pressure. If exceeded, the inside of the tank 64 is opened to the atmosphere by the pressure release valve 65 provided on the cap 69, and the internal pressure of the tank 64 decreases, so that the refrigerant is removed from the engine of the vehicle 1 as the sub radiator 6 is damaged. It can prevent ejecting into the room 30.

  It is possible to prevent problems caused by the refrigerant sprayed from the sub-radiator 6 being applied to devices such as the engine 3 and the belt 32 in the engine room 30 as much as possible.

  In the fifth embodiment, since the pressure release valve 65 is provided in the cap 69 attached to the refrigerant hole 68 in the upper part of the tank portion 64 of the sub-radiator 6, the processing of the tank portion 64 of the sub-radiator 6 is particularly required. Without this, the pressure release valve 65 can be provided in the tank portion 64 of the sub-radiator 6 and the cost can be reduced.

  Moreover, in the fifth embodiment, the configuration of the ejection direction restricting portion may be the one in the second to fourth embodiments.

4A-4E Heat exchanger for vehicles 6 Sub-radiator (first heat exchanger)
7 Water-cooled condenser (second heat exchanger)
24 Upper guard (Blowing direction restricting part)
25 Concave part (jet direction regulating part)
27, 66, 67 Restriction wall (ejection direction restriction part)
64 Tank 65 Pressure Relief Valve 68 Refrigerant Hole 69 Cap

Claims (5)

A first heat exchanger (6) through which the first refrigerant flows;
A second heat exchanger (not shown) that is housed in the tank portion (64) of the first heat exchanger (6), in which a high-pressure second refrigerant flows and exchanges heat between the second refrigerant and the first refrigerant. 7) a vehicle heat exchange device (4A) comprising :
A pressure release valve (65) provided at an upper portion of the tank portion (64) of the first heat exchanger (6), and opening the interior to the atmosphere when the internal pressure exceeds a specified pressure;
An ejection direction regulating part that regulates the ejection direction of the refrigerant ejected from the pressure release valve (65) ,
The ejection direction regulating portion is a recess (25) provided in an upper guard (24) disposed above the first heat exchanger (6),
The vehicle heat exchange device (4A), wherein the recess (25) is disposed at a position surrounding the pressure relief valve (65 ) . A first heat exchanger (6) through which the first refrigerant flows;
A second heat exchanger (not shown) that is housed in the tank portion (64) of the first heat exchanger (6), in which a high-pressure second refrigerant flows and exchanges heat between the second refrigerant and the first refrigerant. 7) a vehicle heat exchange device (4B) comprising :
A pressure release valve (65) provided at an upper portion of the tank portion (64) of the first heat exchanger (6), and opening the interior to the atmosphere when the internal pressure exceeds a specified pressure;
An ejection direction regulating part that regulates the ejection direction of the refrigerant ejected from the pressure release valve (65),
The ejection direction regulating portion includes an upper guard (24) disposed above the first heat exchanger (6) ,
A restriction wall (27) provided on the upper guard (24) ,
The vehicle heat exchange device (4B), wherein the regulating wall (27) is disposed behind the pressure release valve (65) in the vehicle . A first heat exchanger (6) through which the first refrigerant flows;
A second heat exchanger (not shown) that is housed in the tank portion (64) of the first heat exchanger (6), in which a high-pressure second refrigerant flows and exchanges heat between the second refrigerant and the first refrigerant. 7) a vehicle heat exchange device (4C) comprising :
A pressure release valve (65) provided at an upper portion of the tank portion (64) of the first heat exchanger (6), and opening the interior to the atmosphere when the internal pressure exceeds a specified pressure;
An ejection direction regulating part that regulates the ejection direction of the refrigerant ejected from the pressure release valve (65),
The ejection direction regulating portion includes an upper guard (24) disposed above the first heat exchanger (6),
A restriction wall (66) protruding from the tank part (64) of the first heat exchanger (6) ,
The vehicle heat exchange device (4C), wherein the regulating wall (66) is disposed on the vehicle rear side of the pressure release valve (65 ) . A first heat exchanger (6) through which the first refrigerant flows;
A second heat exchanger (not shown) that is housed in the tank portion (64) of the first heat exchanger (6), in which a high-pressure second refrigerant flows and exchanges heat between the second refrigerant and the first refrigerant. 7) a vehicle heat exchange device (4D) comprising :
A pressure release valve (65) provided at an upper portion of the tank portion (64) of the first heat exchanger (6), and opening the interior to the atmosphere when the internal pressure exceeds a specified pressure;
An ejection direction regulating part that regulates the ejection direction of the refrigerant ejected from the pressure release valve (65),
The ejection direction regulating portion is a regulating wall (67) protruding from the tank portion (64) of the first heat exchanger (6),
The vehicle heat exchange device (4D), wherein the regulating wall (67) is disposed on the vehicle rear side of the pressure release valve (65 ) . The vehicle heat exchange device (4E) according to any one of claims 1 to 4 ,
The vehicle, wherein the pressure release valve (65) is provided in a cap (69) attached to the refrigerant hole (68) of the tank portion (64) of the first heat exchanger (6). Heat exchanger (4E).

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