JP2001080340A - Air conditioning unit and air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize an increase in the size so as to allow addition of new functions by arranging a selectively used apparatus movable between a storage position allowing no passage of introduced air and a usage position passing the introduced air in an air duct system for conditioning and blowing the introduced air. SOLUTION: In an air conditioning duct AD serving as an air duct system leading introduced air, a selectively used apparatus unit 60 is added to the part leading introduced air from a blower unit 20 to a cooler unit 30 and provided with a selectively used apparatus 61 selectively used as necessary. The selectively used apparatus 61 is arranged oscillationally between a storage position and a usage position, and in the usage position, introduced air led from the blower unit 20 to the cooler unit 30 always passes through the selectively used apparatus 61. In the selectively used apparatus unit 60, a recess part 63 housing the selectively used apparatus 61 is formed on the wall face of a casing 62. In this way, increase in the size is minimized and new functions can be added for improving performance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner and an air conditioner for a vehicle, and more particularly, to an air conditioner and an air conditioner for a vehicle equipped with devices selectively used for improving performance and functions. It concerns the device.

[0002]

2. Description of the Related Art A vehicle air conditioner capable of providing a comfortable cabin environment for an occupant by air-conditioning the interior of a vehicle such as an automobile is an air conditioner including a blower fan, an evaporator, a heater core, and various dampers. A conditioning system, a refrigerant system for supplying low-temperature and low-pressure liquid refrigerant to an evaporator in the air-conditioning unit, a heating source system for introducing high-temperature engine cooling water to a heater core in the air-conditioning unit, and a temperature, humidity, solar radiation and The control unit controls the operation of the air conditioner for a vehicle in accordance with various conditions such as occupant preferences.

The air conditioning unit 1 shown in FIG.
Is a unit in which the inside / outside air box 10, the blower unit 20, the cooler unit 30, and the heater unit 40 are integrated. In the case of a general sedan type passenger car, the air conditioning unit 1 is arranged below the dashboard on the passenger seat side. Hereinafter, the configuration of the air conditioning unit 1 will be briefly described in the order of air flow.

The first inside / outside air box 10 is a part having a function of selecting either the outside air (air outside the vehicle compartment) a or the inside air (air inside the vehicle compartment) b, and includes an outside air inlet 11a and an inside air inlet. 11b is provided. Both inlets 11
One of a and 11b is configured to close one of them by operating the inside / outside air switching damper 12 and select air to be introduced (hereinafter referred to as introduced air). A blower unit 20 is provided downstream of the inside / outside air box 10 and connected thereto.
1 has a function of sucking the outside air a or the inside air b and sending the air to the cooler 30 described later. Cooler part 3
Numeral 0 has a function of cooling and dehumidifying the introduced air blown from the blower unit 20 by the evaporator 31. The evaporator 31 receives the supply of the low-temperature and low-pressure liquid refrigerant from the refrigerant system during the cooling operation and exchanges heat with the passing introduced air to cool and dehumidify. The heater section 40 has a function of selectively heating the introduced air sent from the cooler section 30 and blowing out conditioned air from an outlet corresponding to the operation mode. A heater core 42 that receives supply of engine cooling water as a heat source from a heating source system is provided in a case 41 of the heater unit 40. Heater core 4
The flow rate of the introduced air passing through the air mix damper 4
The temperature of the conditioned air is controlled by adjusting the opening degree of the air conditioner. The case 41 of the heater unit 40 includes
A defrost outlet 44, a face outlet 45 and a foot outlet 46 are provided, and a defrost damper 44a, a face damper 45a and a foot damper 46a are attached to each outlet.

The above-described vehicle air conditioner operates the "defrost blowing mode" by opening and closing various dampers provided in the heater section 40 of the air conditioner unit 1.
A desired blowing mode can be selected and set from “face blowing mode”, “foot blowing mode”, “bi-level blowing mode”, and “blend (foot / defrost) blowing mode”.

[0006]

In the development of air conditioners for vehicles in recent years, it has become indispensable to consider the measures taken by the vehicle on environmental issues such as reduction of exhaust gas emitted from an internal combustion engine. I have. In addition, it is also desired to improve the marketability by increasing the functions of the vehicle air conditioner.

[0007] Against this background, new equipment has been added to the conventional air conditioning unit described above,
In some cases, it may be necessary to be able to arbitrarily select and switch an additionally installed device such that it is used or not used depending on the situation. Although the addition of such a device is accompanied by an increase in space, considering that the device is installed in a limited space such as a vehicle, it is desired to suppress the increase as much as possible to provide a small air conditioning unit. . In addition, it is desired that the components constituting the air-conditioning unit should be shared between the case where the new additional device is installed and the case where it is not necessary to install the additional device, and that the cost is reduced by minimizing the number of components.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to suppress an increase in size when adding a device to be used selectively, and to provide an air conditioning unit and a vehicle air having a structure suitable for space saving. It aims to provide a harmony device.

[0009]

In the present invention, the following means are employed in order to solve the above-mentioned problems. The air conditioning unit according to claim 1, wherein an air passage system that air-conditions the introduced air and blows the air into the room is selectively movable between a storage position where the introduced air does not pass and a use position where the introduced air passes. It is characterized by having installed equipment. In this case, it is preferable that the selective use device is configured to be stored in a recess provided on an air path wall surface of the air path system at the storage position.

[0010] According to such an air conditioning unit, the size of the air conditioning unit protruding outside the air passage system can be reduced.

The air conditioning unit according to a third aspect of the present invention is provided with an air passage system which air-conditions the introduced air and blows the air into the room. It is characterized by being arranged.

In this case, the parallel flow path is selectively switched to one of the flow paths by a damper operation.
Further, it is preferable that the selective use device is disposed vertically to one of the parallel flow passage portions.

[0013] According to such an air conditioning unit, the dimensional increase in the flow direction of the air passage system can be reduced.
A newly selected device can be additionally installed while minimizing the increase in external dimensions.

In the air conditioning unit according to a sixth aspect of the present invention, a parallel flow passage is provided in an air passage system for air-conditioning the introduced air and blowing the air into a room, and a device to be selectively used is arranged in parallel with the flow direction of the air passage system. And a damper for selectively switching the passage of the introduced air through the selective use device is provided.

According to such an air conditioning unit, the increase in the vertical dimension can be reduced as compared with the case where the optional equipment is installed vertically, so that the increase in the external dimensions can be minimized and the new optional equipment can be used. Additional equipment can be installed.

In the air conditioner unit according to the present invention, a parallel flow passage which can be selectively switched by a damper operation is provided in an air passage system which air-conditions the introduced air and blows the air into the room, and any one of the parallel flow passages is provided. And a selective use device bent in a V-shape.

According to such an air conditioning unit, the increase in the vertical dimension can be made smaller than that when the selective use equipment is installed vertically, and the dimension in the flow direction of the introduced air can be made smaller than that when the optional equipment is installed horizontally. Therefore, it is possible to additionally install a device to be selectively used while minimizing an increase in external dimensions.

An air conditioning unit according to claim 8, wherein an inside / outside air box having an inside / outside air switching damper for opening and closing the inside air introduction port and the outside air introduction port and selectively switching the introduction air to either inside air or outside air, A blower unit provided with a blower fan that sucks the introduced air and blows the air downstream, a cooler unit that includes an evaporator that exchanges heat between a refrigerant and the introduced air passing therethrough, and the introduced air passing therethrough. A heater core for heating, an air mix damper for adjusting a flow rate of the introduced air passing through the heater core, and a heater unit having a plurality of outlets opened to the case and each provided with a damper are provided. An air conditioning unit for a vehicle, comprising: a storage position where the introduced air does not pass, and a use position where the introduced air passes through an air passage system that air-conditions the introduced air and blows the air into a vehicle interior. It is characterized in that between a position set up a selection using equipment movable. In this case, it is preferable that the air path system of the portion where the selective use device is movably installed has a structure that can be selectively detached.

According to such an air conditioner unit, the size of the air conditioning system protruding outside can be reduced, so that the size of the external dimensions can be minimized and additional equipment can be additionally installed. New functions can be added, performance can be improved, and space can be saved for an air conditioning unit for a vehicle whose installation space is limited.

According to a tenth aspect of the present invention, there is provided an air conditioner for a vehicle, wherein an inside air introduction port and an outside air introduction port are opened, and an inside / outside air switching damper is provided with an inside / outside air switching damper for selectively switching introduction air to either inside air or outside air. A blower unit provided with a blower fan for sucking the introduced air and blowing it to the downstream side, a cooler unit provided with an evaporator for exchanging heat between a refrigerant and the introduced air passing therethrough, A heater core that heats air, an air mix damper that adjusts a flow rate of the introduced air passing through the heater core, and a heater unit that has a plurality of outlets that are open to the case and each include a damper, An air passage system that air-conditions the introduced air and blows it into the vehicle interior is provided with a selective use device that is movable between a storage position where the introduced air does not pass and a use position where the introduced air passes. And air conditioning unit, which was formed by,
A compressor for compressing a gaseous refrigerant, a condenser for exchanging heat of a high-pressure gas refrigerant with outside air and condensing the same, and an expansion valve for converting a high-temperature and high-pressure liquid refrigerant to a low-temperature and low-pressure liquid refrigerant. A refrigerant system that supplies a low-pressure liquid refrigerant, a heating source system that introduces engine cooling water into the heater core, and a control unit that performs operation control of the air conditioning unit, the refrigerant system, and the heating source system. It is a feature.

According to such a vehicle air conditioner,
Since the size of the air conditioning unit protruding outside the air path system can be reduced, it is possible to minimize the increase in the external dimensions and additionally install optional equipment. Therefore, by adding new functions, improving performance, and saving space in an air-conditioning unit whose installation space is limited, it is possible to improve the commerciality of a vehicle air-conditioning apparatus including the air-conditioning unit as a component.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a vehicle air conditioner and a vehicle air conditioner according to the present invention will be described with reference to the drawings. FIGS. 1 to 3 are diagrams showing a configuration of a first embodiment of a vehicle air conditioner according to the present invention. This vehicle air conditioner is an air conditioning unit that performs air conditioning such as cooling and heating. 1A and a refrigerant system 2 for supplying a refrigerant to the air conditioning unit 1A during a cooling operation.
And a heating source system 3 for supplying engine cooling water as a heat source to the air conditioning unit 1A during the heating operation, and a control unit 4 for controlling the operation of the entire apparatus.

As shown in FIG. 1, the air conditioning unit 1A is incorporated between the blower section 20 and the cooler section 30 in addition to the inside / outside air box 10, the blower section 20, the cooler section 30, and the heater section 40. The selective use device unit 60 is integrated. This air-conditioning unit 1A is disposed on the left side (passenger seat side) when viewed from the passenger compartment and below the dashboard 5 in the case of a general sedan type passenger car as shown in FIGS. . Hereinafter, this air conditioning unit 1
A will be described in the order of air flow.

The first inside / outside air box 10 has a function of selectively switching the air introduced into the air conditioning unit 1A to either the outside air a or the inside air b. Here, an outside air inlet 11a communicating with the outside of the cabin and an inside air inlet 11b communicating with the cabin are provided.
One of 1a and 11b is closed by the inside / outside air switching damper 12, and the air to be introduced (hereinafter referred to as introduced air) is selected.

The blower unit 20 is provided downstream of the inside / outside air box 10 and is provided with the outside air a by the operation of the blower fan 21.
Alternatively, it has a function of selectively sucking the inside air b and sending the air to the selectively used device section 60 and the cooler section 30 described later.
The blower fan 21 uses an electric motor 22 as a drive source, and can generally switch a plurality of air volumes in addition to a stop position. When the outside air a is introduced while the vehicle is traveling, the outside air a, which is the traveling wind, can be flown to the selected and used equipment section 60 and the cooler section 30 even when the blower fan 21 is stopped.

The selective use equipment section 60 is connected to an air conditioning duct AD serving as an air passage system for introducing introduced air, for example, a part of the air conditioning duct AD for leading introduced air from the blower section 20 to the cooler section 30.
And a device (hereinafter, selectively used device) 61 that is selectively used as necessary. The selective use device 61 is installed so as to be able to swing between a storage position indicated by a solid line and a use position indicated by an imaginary line. In the use position, the introduced air guided from the blower unit 20 to the cooler unit 30 is supplied. It always passes through the selective use device 61. The selective use device unit 60 has a casing 62 that is a part of the air conditioning duct AD, and a concave portion 63 for storing the selective use device 61 is formed on a wall surface of the casing 62. In the illustrated example, the recess 6
3 is formed, and the selective use device 6 housed in the concave portion 63 is formed.
1 is not exposed in the air conditioning duct AD.
That is, the selective use device 61 whose one end side is rotatably supported is between the storage position where it is lifted and stored in the concave portion 63 and the use position where it is lowered so as to block the flow path in the air conditioning duct AD. , And can be swung by a suitable known driving means (not shown). In addition, as the specific selective use equipment 61, there are an air cleaning filter, an aromatic, an auxiliary heat exchanger, a cool storage / heat storage device, and the like.

The cooler unit 30 has a function of cooling and dehumidifying the introduced air which has been blown from the blower unit 20 and passed through the selective use device unit 60. This cooler unit 30
It is composed of an evaporator 31 which is a heat exchanger for cooling, and a case 32 in which the evaporator 31 is stored. The evaporator 31 receives supply of a low-temperature and low-pressure liquid refrigerant from a refrigerant system 2 described later during cooling operation, and exchanges heat between the introduced air that is blown from the blower unit 20 and passes through the evaporator 31 and the liquid refrigerant. As a result,
The introduced air is deprived of heat by the refrigerant and becomes cooled and dehumidified cold air, which is guided to a heater section 40 described later. Case 32
Is a resin molded part forming a part of the air conditioning duct AD serving as a flow path of the introduced air. In addition, this case 32
Is usually divided into upper and lower parts to facilitate installation of the evaporator 31. A drain pan 33 for collecting and discharging condensed water generated on the surface of the evaporator 31 is formed on the lower surface of the case 32.

The heater section 40 has a function of selectively heating the introduced air sent from the cooler section 30 and blowing out conditioned air from an outlet corresponding to each operation mode. The heater section 40 includes a heater core 42 installed inside a case 41, an air mix damper 43 for adjusting the flow rate of the introduced air passing through the heater core 42, and a damper 44a opened to the case 41 and capable of being opened and closed. , 45a, 46a with outlets 44, 4
5, 46.

The case 41 is a molded part of a resin, and forms a part of the air conditioning duct AD. In this case 4
1 is provided with a defrost outlet 44, a face outlet 45, and a foot outlet 46, and a defrost damper 44a, a face damper 45a, and a foot damper 46a are attached to each outlet, respectively. The heater core 42 is a heat exchanger that receives a supply of high-temperature engine cooling water from a heating source system 3 described later during heating operation and heats the introduced air blown from the cooler unit 30. Heater part 4
The introduced air sent to 0 is classified into one that passes through the heater core 42 and one that does not pass through the heater core 42 according to the opening degree of the air mix damper 43.

The above-mentioned defrost outlet 44 is provided with hot air and dehumidified air to directly hit the inner surface of the windshield or the like in order to remove defrost on the windshield before running in winter and to remove fogging of the windshield during running in rainy weather. It blows out. The air-conditioning operation mode in which the entire amount of the conditioned air is blown out from the defrost air outlet 44 in this manner is called a “defrost air-blow mode”. In addition, face outlet 4
The air-conditioning operation mode 5 blows cold air toward the upper body of the occupant mainly during the cooling operation in summer. Such an air-conditioning operation mode is referred to as a “face blowing mode”. And
The foot outlet 46 blows warm air to the feet of the occupant mainly during a heating operation in winter, and is called a “foot outlet mode”. In this air-conditioning operation mode, a part of the conditioned air (warm air) is blown out simultaneously from the defrost outlet 44 at a small amount, usually about 20%, to remove the fogging of the windshield and the like. Note that there is also an air-conditioning operation mode called “bi-level blowing mode” which is mainly used in the middle period of spring or autumn and blows air-conditioned air from both the face outlet 45 and the foot outlet 46. In general, the wind blown out from the outlet 45 is head cold foot heat whose temperature is lower than that of the foot outlet 46. There is also an air-conditioning operation mode called “blend (foot / defrost) blowing mode” that blows conditioned air from both the defrost outlet 44 and the foot outlet 46 used in winter.

Next, the configuration of the refrigerant system 2 will be described with reference to FIG. The refrigerant system 2 supplies a low-temperature and low-pressure liquid refrigerant to the evaporator 31, and includes a compressor 51, a condenser 52, and an expansion valve 53. When the cooling / dehumidifying function is not required, installation of the refrigerant system 2 is omitted together with the evaporator 31 described above. The compressor 51 compresses the vaporized low-temperature and low-pressure gas refrigerant by removing heat in the vehicle interior by the evaporator 31 and sends it to the condenser 52 as a high-temperature and high-pressure gas refrigerant. In the case of an air conditioner for an automobile, the compressor 51 receives driving force from the normal engine 54 via a belt and a clutch. The condenser 52 is disposed in front of the engine room 6 and cools the high-temperature and high-pressure gas refrigerant supplied from the compressor 51 with the outside air to condense and liquefy the gaseous refrigerant. The liquefied refrigerant is sent to a receiver (not shown) to separate gas and liquid, and then sent to the expansion valve 53 as a high-temperature and high-pressure liquid refrigerant. The expansion valve 53 decompresses and expands the high-temperature and high-pressure liquid refrigerant into a low-temperature and low-pressure liquid (mist-like) refrigerant.
Supply to 1. The expansion valve 53 is generally installed at an appropriate position in the cooler 30 together with the evaporator 31.

Next, the configuration of the heating source system 3 will be briefly described with reference to FIG. The heating source system 3 includes a heater core 42
To supply high-temperature engine cooling water as a heat source to
A part of the engine cooling water system circulating between the engine 54 and the radiator 55 is introduced into the air conditioner.

Finally, the configuration of the control unit 4 will be briefly described with reference to FIG. The control unit 4 includes an air conditioning unit 1A, a refrigerant system 2, and a heating source system 3 which constitute an air conditioner.
In addition, the control section controls the operation of the selective use device section 60. Usually, a control circuit is incorporated in an operation panel on which an occupant performs various settings, and the control circuit is installed in a central portion of the instrument panel. The control unit 4 includes a selection operation device 61 in addition to a switching operation of the inside / outside air switching damper 12, a selection switching of various operation modes by opening / closing operations of dampers, a switching of a blower fan 21 and a desired temperature setting operation. An operation of moving between the storage position and the use position can be performed.

In the vehicle air conditioner thus configured, by driving the blower fan 21, the outside air a
Alternatively, the inside air b is introduced into the air conditioning duct AD from the outside air introduction port 11a or the inside air introduction port 11b of the inside / outside air box 10, and the introduced air passes through the blower unit 20 and passes through the air conditioning duct AD to the downstream cooler unit 30. Sent. At this time, if the selective use device 61 is at the use position, it passes therethrough and receives the action, and if it is the storage position, it simply passes through the casing 62 of the selective use device unit 60. The introduced air flowing through the cooler 30 passes through the evaporator 31. Here, during the cooling operation in which the low-temperature and low-pressure liquid refrigerant is supplied from the refrigerant system 2, the refrigerant exchanges heat with the refrigerant and is cooled and dehumidified. To the heater section 40.

On the other hand, when the air mix damper 43 completely covers the passage on the heater core 42 side, the introduced air that has been cooled and dehumidified and sent to the heater section 40 is entirely passed through the heater core 42. Without each outlet 44,
Toward 45 and 46, cool air is blown into the vehicle interior from the outlet with the damper opened. Further, when the air mix damper 43 fully opens the passage on the heater core 42 side, all of the introduced air passes through the heater core 42 and is heated, so that warm air is blown into the vehicle interior from the outlet with the damper open. . Furthermore, when the air mix damper 43 is at the intermediate position, the cool air that does not pass through the heater core 42 and the warm air that has passed through the heater core 42 are mixed downstream of the air mix damper 43 in accordance with the degree of opening thereof. The air conditioned to the temperature is blown into the vehicle compartment from the outlet with the damper open according to the operation mode.

Among the specific examples of the selective use equipment 61 installed in the selective use equipment section 60 described above, the air purifying filter is used according to the occupant's preference and running conditions.
For example, by moving to the use position and selectively using it when introducing outside air in urban driving, the introduced air can be purified and a comfortable vehicle interior environment can be obtained. Also, the fragrance is used according to the occupant's preference. If the fragrance is moved to the use position as needed, the fragrance is added to the introduced air, so that the interior of the vehicle can have a desired fragrance.

The auxiliary heat exchanger is, for example, an auxiliary evaporator that is used in an auxiliary manner to increase the cooling capacity at the time of cooling down of the cooling operation and is stopped for energy saving when the normal cooling operation is started. There is something. When a large heating capacity is required, such as in a cold district specification vehicle, there is an auxiliary heater core that selectively increases the heating capacity by setting the use position. In this case, the installation position is determined after the cooler unit 30. The flow side is preferred. In the case of a movable auxiliary heat exchanger, it is necessary to provide a follow-up measure against movement by using a flexible tube in a connection part in an introduction system of a refrigerant, hot water of a heat source, or the like.

Some of the cold storage / heat storage devices are installed for the purpose of ensuring air conditioning performance when the engine is stopped for a relatively short time, such as when waiting for a traffic light, as a measure to save energy or reduce exhaust gas. Some regenerative storage devices include, for example, a regenerative material that is provided in addition to a regenerative evaporator that is installed as an auxiliary component. During normal running, the regenerative device is in a storage position, receives a supply of a refrigerant to the regenerative evaporator, cools the regenerative material, and accumulates cold heat. Then, when the engine 54 is stopped by stopping the vehicle, the normal evaporator 31 cannot receive the supply of the refrigerant, so that its cooling function is reduced. Therefore, when the cool storage device in the storage position is lowered to the use position, the introduced air passes through the cool storage device and is cooled, and then the evaporator 31 is cooled.
Pass through. For this reason, the function deterioration of the evaporator 31 can be compensated for by the cold storage device, and the deterioration of the cooling function of the air conditioning unit can be minimized.

The above-mentioned selective use equipment section 60 is configured to be selectively attachable to and detachable from the air-conditioning unit 1A as necessary by sharing a connection structure at both ends thereof. That is, in the example shown in FIG.
If the connection structure of the selected and used equipment unit 60 and the cooler unit 30 is shared, the blower unit 20 is directly connected to the cooler unit as in the conventional structure when the selected and used equipment unit 60 is unnecessary. 30 can be connected. By doing so, it is possible to share the components of the air conditioning unit 1A, and it is possible to reduce the number of parts. Therefore, the attachment / detachment of the selective use device section 60 can be easily selected, so that the selective use device 61 is a so-called option.
Can be easily installed.

As described above, by installing the optional equipment that can move between the storage position and the use position in the air path system that air-conditions the introduced air and blows it into the passenger compartment, Although it extends to some extent, the protrusion dimension can be kept small, and a new function can be added or the performance can be improved without increasing the size of the air conditioning unit 1A. In the above explanation,
The selective use device section 60 is mainly disposed between the blower section 20 and the cooler section 30, but this position can be appropriately changed according to the function of the selective use device 61,
Further, the present invention is not necessarily limited to one selection and use device 61, and a plurality of selection and use devices 61 or selection and use device units 60 may be arranged as necessary. In addition, the storage position of the selective use device 61 does not necessarily need to be provided at the upper portion of the casing 62. For example, when the selective use device 61 is an evaporator, the provision of the concave portion 63 at the lower portion facilitates the treatment of condensed water. The upper, lower, left and right wall surfaces can be appropriately changed according to the type and use of the selective use device 61.

Next, a second embodiment of the air conditioning unit according to the present invention will be described with reference to FIGS. 4 and 5 show the selective use device unit 6 described above.
It is principal part sectional drawing which shows the modification of 0. In this embodiment, a parallel flow path unit 70 is provided, which can be selectively switched to an air path system that air-conditions the introduced air and blows the air into a room such as a vehicle interior. The passage is called a bypass passage 72. In the example shown in FIG. 4, the bypass flow path 72 is provided in parallel by providing a bulge on the upper wall surface of the main flow path 71. In the example shown in FIG.
The bypass passages 72 are arranged vertically symmetrically by providing bulging portions on upper and lower wall surfaces of the air passage system.

The bypass flow path 7 of the parallel flow path 70
2, a switching damper 74 is provided to selectively switch either the main flow path 71 or the bypass flow path 72. In the example shown in FIG. 5, the selective use device 73 is installed with the bypass flow path 72 arranged on the upper side, but the selective use equipment 73 may be installed with the bypass flow path 72 on the lower side. With such a configuration,
In particular, when the selective use device 73 is an evaporator, treatment of condensed water is facilitated. In the embodiment shown in FIGS. 4 and 5, the main flow path 71 and the bypass flow path 72 are arranged in parallel in the vertical direction, and the selective use equipment 73 is arranged perpendicular to the direction of the introduced air flow in the air path system. Therefore, although the outer dimensions increase in the vertical direction, an increase in the dimensions in the flow direction of the introduced air can be minimized. And the main flow path 71
In addition, it is also possible to arrange the bypass flow paths 72 in parallel in the width (horizontal) direction and arrange the selective use equipment 73 perpendicular to the flow direction of the introduced air. In this case, the external dimensions in the width direction become large. However, the increase in dimension in the direction of the introduced air flow can be minimized. The parallel flow path 70
Are provided in the air conditioning unit, and specific examples of the selective use device 73 are the same as those in the first embodiment.

Next, a third embodiment of the air conditioning unit according to the present invention will be described with reference to FIG. FIG.
FIG. 7 is a cross-sectional view of a main part showing a modification of the above-mentioned selective use equipment section 60. The position to be additionally provided to the air conditioning unit, a specific example of the selective use equipment, etc.
This is the same as the embodiment. In this embodiment, a parallel channel section 80 is provided in an air channel system that air-conditions the introduced air and blows the air into a room such as a vehicle interior. One channel is called a main channel 81, and the other channel is a bypass channel 82. Call. In the example shown in FIG. 6A, a bypass flow path 82 is formed by providing a bulging portion on the upper wall surface of the main flow path 81, and both flow paths 81, 82 are parallel to the flow direction of the introduced air. Optional equipment 83 installed
Are divided and separated by Then, the selective use device 8
A main flow path selection position (shown by a solid line) covering the upstream half of 3;
A switching damper 84 is provided which is opened and closed between a bypass flow path selecting position (indicated by an imaginary line) that closes the main flow path 81 and whether or not the operation of the switching damper 84 causes the introduced air to pass through the selective use device 83. Can be selectively switched.

With such a configuration, although the length becomes longer in the flow direction of the introduced air, the outer dimensions in the vertical direction can be suppressed as compared with the second embodiment in which the devices to be selectively used are arranged vertically. Further, the introduced air flowing through the bypass flow path 82 once passes through the selective use device 83, enters the bypass flow path 82, and then passes through the selective use device 83 again and returns to the air path system. Since the gas passes through the selective use device 83 twice, the wind speed on the entire downstream side of the bypass passage 82 is made uniform.

FIG. 6 (b) shows a modification of FIG. 6 (a), in which a bypass flow path 82 in which a selective use device 83 is installed is disposed below a main flow path 81. Is different. Such a configuration is particularly suitable when the selective use device 83 is an evaporator.
By providing the drain hole 85 on the lower surface of the evaporator, drainage of the condensed water dropped from the evaporator is facilitated. In addition, the position of the bypass flow path 82 with respect to the main flow path 81 can be arranged in the left-right direction in addition to the above-described vertical direction.

Next, a fourth embodiment of the air conditioning unit according to the present invention will be described with reference to FIG. FIG. 7 is a cross-sectional view of a main part showing a modified example of the above-mentioned selective use equipment section 60. The position provided additionally to the air conditioning unit, a specific example of the selective use equipment, etc. This is the same as the embodiment. In this embodiment, a parallel channel section 90 is provided in an air channel system that air-conditions the introduced air and blows the air into a room such as a vehicle interior. One of the channels is referred to as a main channel 91, and the other channel is a bypass channel 92. Call. In the example shown in FIG. 7A, a bypass flow passage 92 is formed by providing a bulging portion on the upper wall surface of the main flow passage 91, and the selective use device 93 bent in a V-shape is provided with a bypass flow passage. 92. In the selective use device 93, the V-shaped intersection is located below the main flow path 91, and the fulcrum 94a of the switching damper 94 is located below the intersection. The switching damper 94 is located between a main flow path selection position (solid line display) where the entrance of the bypass flow path 92 upstream of the fulcrum 94a is fully closed and a bypass flow path selection position (displayed with imaginary line) that closes the main flow path 91. Is opened and closed. Therefore, by the opening and closing operation of the switching damper 94, it is possible to selectively switch whether or not the introduced air passes through the selectively used device 93.

With such a configuration, the flow direction of the introduced air can be shorter than that of the third embodiment, and
As compared with the second embodiment in which the selectively used devices are arranged vertically, the outer dimensions in the vertical direction can be suppressed. Further, the introduced air flowing through the bypass flow passage 92 sequentially passes through the selective use device 93 bent in a V-shape, that is, passes through the select use device 93 twice.
On the downstream side, the wind speed in the entire air path system is made uniform.

The V-shaped selective use device 9
If the device 3 is a device such as an evaporator that generates condensed water, as shown in FIG. 7B, the drain pan 95 can be installed without obstructing the flow of the introduced air passing through the selective use device 93. Processing becomes easier. In addition,
Also in this embodiment, the bypass flow path 9 with respect to the main flow path 91
The position 2 can be a lower portion or a left and right portion in addition to the above-described upper portion.

As described above, in each of the embodiments, the selectively used equipment is added without increasing the dimensions in different directions among the flowing direction of the introduced air and the vertical or horizontal (width) direction of the air conditioning unit. In any case, new functions can be added or performance can be improved by minimizing the size of the air conditioning unit. Therefore, by appropriately selecting and adopting an appropriate one from the situation on the vehicle side where the air conditioning unit is actually installed, the degree of freedom of design is increased and the applicable range can be expanded.

[0050]

According to the air conditioner and the vehicle air conditioner of the present invention described above, a new function can be added by minimizing the size of the air conditioner unit. Therefore, it is possible to save the space of the air conditioning unit for a vehicle in which the installation space is limited, and to obtain an air conditioning unit having excellent merchantability by improving functions and performance. In addition, the function and performance can be improved by suppressing an increase in the number of parts, which is advantageous in terms of cost. And also in the air conditioner for vehicles which comprises such a stem harmony unit as a constituent, there is an effect that cost and cost can be improved and function and performance can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a first embodiment of an air-conditioning unit according to the present invention.

FIG. 2 is a perspective view of an engine room of an automobile showing an outline of a configuration and an arrangement of the air conditioner.

FIG. 3 is a perspective view showing an installation example of an air conditioning unit when viewed from a passenger compartment side.

FIG. 4 is a sectional view of a main part (parallel flow path part) showing a second embodiment of the air-conditioning unit according to the present invention.

FIG. 5 is a diagram showing a modification of the second embodiment shown in FIG.

FIG. 6 is a cross-sectional view of a main part (parallel flow path part) showing a third embodiment of the air-conditioning unit according to the present invention, where (a) shows an example in which a bypass flow path is arranged at an upper part, and (b) shows an example. This is an example in which a bypass flow path is arranged at a lower portion.

FIGS. 7A and 7B are cross-sectional views of a main part (parallel flow path part) showing a fourth embodiment of the air conditioning unit according to the present invention, wherein FIG. This is an example in which a bypass flow path is arranged at a lower portion.

FIG. 8 is a cross-sectional view illustrating a configuration of a conventional vehicle air conditioning unit.

[Explanation of symbols]

 1, 1A Air conditioning unit 2 Refrigerant system 3 Heat source system 4 Control unit 10 Inner / outer air box 20 Blower unit 30 Cooler unit 40 Heater unit 41 Case 42 Heater core 43 Air mix damper 44 Defrost outlet 44a Defrost damper 45 Face outlet 45a Face Damper 46 Foot outlet 46a Foot damper 60 Optional device 61 Optional device 62 Casing 63 Recess 70, 80, 90 Parallel channel 71, 81, 91 Main channel 72, 82, 92 Bypass channel 73, 83, 93 Equipment used 74, 84, 94 Switching damper 85 Drain hole 95 Drain pan

Claims (10)

[Claims] An air path system for air-conditioning and blowing out introduced air into a room is provided with a selective use device movable between a storage position where the introduced air does not pass and a use position where the introduced air passes. An air-conditioning unit characterized by: 2. The air conditioning unit according to claim 1, wherein the selective use device is configured to be stored in a recess provided on an air path wall of the air path system at the storage position. 3. An air conditioner, wherein a selectable parallel flow path portion is provided in an air path system for air-conditioning the introduced air and blowing the air into a room, and a selective use device is disposed in one of the parallel flow path portions. unit. 4. The air conditioning unit according to claim 3, wherein the parallel flow passage is selectively switched to one of the flow passages by a damper operation. 5. The air-conditioning unit according to claim 3, wherein the selective use device is arranged perpendicular to one of the parallel flow passage portions. 6. An air passage system which air-conditions the introduced air and blows it into a room is provided with a parallel flow passage section, and a selective use device is arranged in parallel with a flow direction of the air passage system to divide the parallel flow passage. An air conditioning unit, further comprising a damper for selectively switching the passage of the introduced air through the selective use device. 7. An air passage system which air-conditions the introduced air and blows it into the room is provided with a parallel flow passage portion which can be selectively switched by a damper operation, and one of the parallel flow passage portions is bent in a V-shape. An air conditioning unit characterized by the equipment used. 8. An inside / outside air box having an inside / outside air switching damper for opening and closing the inside air introduction port and the outside air introduction port to selectively switch the introduction air to either inside air or outside air, A blower unit provided with a blower fan for blowing air, a cooler unit having an evaporator for exchanging heat between a refrigerant and the passing air, a heater core for heating the passing air, and a heater core passing the heater core. An air-conditioning unit for a vehicle, comprising: an air mix damper that adjusts a flow rate of the introduced air to be introduced; and a heater unit that has a plurality of outlets that are opened in the case and each include a damper. An air passage system that air-conditions the introduced air and blows out into the vehicle interior, by using a selective use device movable between a storage position where the introduction air does not pass and a use position where the introduction air passes. Air conditioning unit, characterized in that the location. 9. The air conditioning unit according to claim 8, wherein an air path system in a portion where the selective use device is movably installed is selectively detachable. 10. An inside / outside air box provided with an inside / outside air switching damper having an inside air introduction port and an outside air introduction port opened and selectively switching introduction air to either inside air or outside air, A blower unit provided with a blower fan for blowing air, a cooler unit having an evaporator for exchanging heat between a refrigerant and the passing air, a heater core for heating the passing air, and a heater core passing the heater core. An air mix damper for adjusting the flow rate of the introduced air, and a heater section having a plurality of air outlets each opened in the case and provided with a damper, and air-conditions the introduced air and blows the air into the passenger compartment. An air conditioning unit having a wind path system and a selective use device movable between a storage position through which the introduced air does not pass and a use position through which the introduced air passes; A compressor for compressing the refrigerant, a condenser for exchanging heat of the high-pressure gas refrigerant with the outside air and condensing the same, and an expansion valve for converting the high-temperature and high-pressure liquid refrigerant to a low-temperature and low-pressure liquid refrigerant, the evaporator includes a low-temperature and low-pressure liquid. A refrigerant system for supplying a refrigerant, a heating source system for introducing engine cooling water into the heater core, and a control unit for controlling the operation of the air conditioning unit, the refrigerant system, and the heating source system. Air conditioner for vehicles.