JPH106739A - Heat exchanger and air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the necessity of a damper or the like for changing a wind direction, to maintain good heat exchanging performance and to downsize a device by providing a means for change-controlling a main flow wind direction in a heat exchanger for passing heat exchanging air. SOLUTION: A heat exchanger 80 is used as a multi-tube heat exchanger in which a pair of upper and lower tanks are communicated and connected to each other by a plurality of circular pipes 3, and furning dampers 6 and 7 for opening/closing parts of surfaces 4 and 5 vertical to the flowing direction of heat exchanging air are provided. While these dampers 6 and 7 are fully closed, heat exchanging air flowing in from the surface 4 flows into the heat exchanger 80 from the non-closed part of the damper 6, but since the flow passage of its straight advance direction is shut off by the damper 7, the heat exchanging air is curved in the heat exchanger 80 main body as shown by an arrow direction and flows out from the non-sealed part by the damper 7 of the surface 5. Thus, heat exchanging is made between passing heat exchanging air and a wind direction is simultaneously changed to a desired direction while providing desired direction to the main stream of the heat exchanging air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner used for a vehicle such as an automobile and a heat exchanger applied to the air conditioner.

[0002]

2. Description of the Related Art Conventionally, as a vehicle air conditioner, for example, the one shown in FIG. 15 is known. In the figure, reference numeral 200 denotes an air conditioner for a vehicle.
A passage 100 for the heat exchange air is formed in the inner space 0.
Reference numeral 101 denotes a rotary damper.
By adjusting the amount of rotation of the vehicle interior,
And / or the degree of opening of the vehicle exterior intake port 113 is adjusted, so that vehicle interior air (REC) and / or exterior air (FRE) as heat exchange air is sucked into the passage 100. I have.

In the passage 100, a blower 102, a heat exchanger 103, and a heater 104 are provided in this order from the upstream side in the flow direction of heat exchange air (arrow in FIG. 15). A damper 105 is provided between the heat exchanger 103 and the heater 104, and the heater 10 is adjusted by adjusting the damper 105.
The flow rate of the air for heat exchange into the inside 4 is controlled.

[0004] From the downstream side of the heater 104 in the passage 100, air outlets I06, 107, 108 (for example, D
EF, VENT, FOOT) are branched and passage 1
Each damper 109, 110, 111 is provided between 00 and each of the outlets 106, 107, 108.

In the air conditioner 200 as described above,
The heat exchange air sucked into the passage 100 through the suction port 112 and / or the suction port 113 is supplied to the heat exchanger 103.
After passing through the heater 104 in some cases, the dampers 109, 110, and 111 are rotated to rotate the dampers 109, 110, and 111 so that the air is discharged into one or more of the air outlets into the vehicle interior. It has become.

More specifically, during cooling, the heat exchanger 103 (evaporator) is operated, the damper 105 is fully closed, and the inflow of air for heat exchange into the heater 104 is interrupted. Stop 104. Further, during heating, the heat exchanger 103 is stopped, the damper 105 is fully opened, and the main flow of the heat exchange air that has passed through the heat exchanger 103 is directed toward the heater 104, so that the heater 104 To work. Further, at the time of air mixing, the heat exchanger 103 is operated, and the damper 105 is moved to the position shown in FIG.
As shown in (2), the heater 104 is operated by imparting directivity in the direction of the heater 104 to a part of the main flow of the heat exchange air flowing through the passage 100 in the half-open state. And heat exchanger 1
03 and the air further passing through the heater 104 after passing through the heat exchanger 103 are mixed at the downstream side of the heater 104 so that the temperature is adjusted and discharged from one or a plurality of outlets. Has become.

That is, in the above-described air conditioner, by adjusting the amount of rotation of the damper 105 provided in the passage 100, the wind direction of the main flow of the heat exchange air and the like are controlled to be changed, and the mode such as cooling and heating is controlled. Is set.

[0008]

However, a damper 105 is provided between the heat exchanger 103 and the heater 104,
In the method of changing and controlling the wind direction of the main flow of the heat exchange air by rotating the damper 105, a passage space for changing the wind direction of the main flow of the heat exchange air in the passage 100 (in FIG. The space between the heater 103 and the heater 104) and the rotation space of the damper 105 must be ensured, which may cause the passage 100 to be enlarged and extended, and the air conditioner itself to be enlarged. On the other hand, with the spread of vehicles equipped with airbags and navigator systems in recent years, further miniaturization of the devices is desired in the field of vehicle air conditioners. For this reason, there is a possibility that the above-mentioned conventional air conditioners cannot sufficiently respond to the above demand. Further, simply reducing the size of the apparatus inevitably causes a decrease in heat exchange performance.

An object of the present invention is to provide an air conditioner capable of sufficiently responding to a demand for downsizing while maintaining excellent heat exchange performance, and a heat exchanger most suitable for the air conditioner.

[0010]

In order to solve the above-mentioned problems, the heat exchanger according to the present invention is provided with a means capable of changing and controlling the main flow direction of the passing heat exchange air in the heat exchanger. It is characterized by the following.

The heat exchanger is not particularly limited, but is preferably a multi-tube heat exchanger.

In order to solve the above problems, the air conditioner of the present invention is characterized in that it has a heat exchanger provided with means capable of changing and controlling the mainstream wind direction in the heat exchanger for passing heat exchange air. Consisting of

Further, another air conditioner according to the present invention is characterized in that a means for changing and controlling a main flow direction of heat exchanger air passing through the heat exchanger in the heat exchanger is provided in the passage. It consists of the features.

The heat exchanger applied to the air conditioner according to the present invention is not particularly limited, but is preferably a multi-tube heat exchanger.

In the above heat exchanger, there is provided means capable of changing and controlling the main airflow direction of the passing heat exchange air in the heat exchanger. And efficient heat exchange, and at the same time, in the heat exchanger main body, a desired directivity can be given to the main flow of the heat exchange air to change the wind direction.

Therefore, if the above heat exchanger is used, a space for changing the main flow wind direction is provided in the heat exchange air passage of the air conditioner, and the main flow air flow of the heat exchange air is changed in the passage. Since there is no need, the reduction of the passage, that is, the miniaturization of the air conditioner, can be effectively achieved while maintaining excellent performance. In addition, the means capable of controlling the change may be provided in a passage of the air conditioner.

The means provided in the heat exchanger and the air conditioner and capable of changing and controlling the main flow direction in the heat exchanger are not particularly limited. For example, a rotary damper, a film damper, It can be composed of an openable shutter, a slide type wind shield, and the like.

Further, the heat exchanger is preferably a multi-tubular heat exchanger. If the heat exchanger is a multi-tubular heat exchanger, the mainstream heat exchanger is substantially free from restrictions in the heat exchanger body. Since the wind direction can be changed, the present invention can be implemented more easily. For example, the above-described means can be configured only by adjusting the arrangement of the circular tubes.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the heat exchanger of the present invention will be described below with reference to the drawings. 1 and 2 show a heat exchanger 80 according to a first embodiment of the present invention. In the drawing, 1 indicates an upper tank, and 2 indicates a lower tank. A plurality of circular tubes 3 extend between the pair of upper and lower tanks 1 and 2,
2 is connected and connected via a circular tube 3. That is, the heat exchanger 80 in the present embodiment is formed of a multi-tube heat exchanger.

The heat exchanger 80 is provided with rotary dampers 6 and 7 for opening and closing a part of the surfaces 4 and 5 perpendicular to the flow direction of the heat exchange air indicated by arrows in FIG. Dampers 6, 7
Is rotatable in the direction indicated by the arrow in FIG. For example, when the dampers 6 and 7 are fully closed as shown in FIG. 2, the main airflow direction of the heat exchange air is changed in the heat exchanger 80 as indicated by arrows. That is, the air for heat exchange flowing into the heat exchanger 80 from the surface 4 flows from the portion of the surface 4 that is not closed by the damper 6.
However, since the flow path in the straight direction is blocked by the damper 7, the air for heat exchange in the heat exchanger 80 bends in the main body of the heat exchanger 80 as shown by the arrow (the direction is changed). ), And flows out from the portion of the surface 5 that is not closed by the damper 7.

That is, in the present embodiment, the direction of the main flow of the heat exchange air passing through the heat exchanger 80 is controlled to be changed by adjusting the amount of rotation of the dampers 6 and 7. . Therefore, heat exchange can be performed with the passing heat exchange air, and at the same time, the wind direction can be changed to a desired direction while imparting a desired directivity to the main flow of the heat exchange air. Therefore, it is not necessary to reserve a space for changing the mainstream wind direction outside the heat exchanger, and the entire air conditioner can be reduced in size.

FIG. 3 shows a heat exchanger 81 according to a second embodiment of the present invention. In this embodiment, the upper and lower tanks 8 and 9 are substantially triangular as shown in FIG.
A circular pipe 3 extends between the upper and lower tanks 8 and 9.

In the present embodiment, the main airflow direction of the heat exchange air flowing from the surface 10 perpendicular to the flow direction of the heat exchange air is divided into two in the heat exchanger 81. That is, a large number of circular tubes 3 are arranged in the center of the surface 10 along the flow direction of the heat exchange air, and the pressure loss increases, so that the heat exchange air is difficult to pass. As the distance from the center to the ends 10a and 10b increases, the number of the circular tubes 3 along the above direction decreases, the pressure loss is reduced, and the heat exchange air easily passes. Therefore, the main flow of the heat exchange air that has flowed into the heat exchanger 81 has the end 1.
The directivity bypassing the directions 0a and 10b is provided, and the main airflow direction of the heat exchange air in the heat exchanger 81 is changed and controlled. That is, in this embodiment, the arrangement itself of the circular tubes 3 according to the shapes of the tanks 8 and 9 of the heat exchanger 81 is a means capable of controlling the change.

FIG. 4 shows a heat exchanger 82 according to a third embodiment of the present invention. The upper and lower tanks 11 and 12 are shown in FIG.
, The upper and lower tanks 11,
Reference numeral 12 is connected by a circular pipe 3. Also in the present embodiment, the main flow of the heat exchange air flowing from the surface 13 perpendicular to the inflow direction of the heat exchange air is divided by the arrangement of the circular pipes 3 in the same manner as described in the second embodiment. 14, 1
Since the air flows out of the heat exchangers 5 and 16, the main airflow direction of the heat exchange air can be changed and controlled in the heat exchanger 82.

FIG. 5 shows a heat exchanger 41 according to a fourth embodiment of the present invention. In the present embodiment, a pair of tanks 42 and 43 are arranged to face each other in the horizontal direction, and the tanks 42 and 43 are connected and connected by a number of circular pipes 44 extending substantially in the horizontal direction. With such a structure, the main flow of the heat exchange air flowing from one surface 45 of the heat exchanger 41 is divided into three directions in the main body of the heat exchanger 41 as indicated by arrows in the figure, and It is possible to flow out of the three surfaces 46, 47, 48. In this way, it is possible to change the direction of the main flow in the heat exchanger by changing the arrangement of the tubes and, at the same time, freely set the change direction.

FIG. 6 shows a heat exchanger 51 according to a fifth embodiment of the present invention. This embodiment shows that in the present invention, it is also possible to make the mainstream wind direction in the heat exchanger U-turn. In the figure, 51
Indicates a multi-tube heat exchanger in which a number of vertically extending circular tubes 3 are disposed between the upper and lower tanks 52 and 53. A partition plate 54 is provided on the air inflow side, and the heat exchange air flowing from the lower side of the partition plate 54 is supplied to dampers 55, 56, 57.
In accordance with the adjustment of the flow, a flow flowing straight, a flow changing the wind direction in the heat exchanger 51 and flowing out in the same direction as the straight flow, branching from the flow, making a U-turn, and flowing out from the upper side of the partition plate 54 It can be divided into a flowing stream. As described above, the direction in which the flow is divided or the direction in which the wind direction changes in the heat exchanger can be set to the U-turn direction.

Next, a preferred embodiment of an air conditioner according to the present invention will be described with reference to the drawings. 7 to 9 show an air conditioner according to a sixth embodiment of the present invention. In the air conditioner 83, a heat exchange air passage 17 is formed. In the passage 17, a blower (not shown), a heat exchanger 80, and a heater 18 are provided in this order from the upstream side in the direction in which the heat exchange air passes (the direction of the arrow in FIG. 7).
Further, from the downstream side of the heater 18 in the passage 17,
9, 20, 21 are branched, and each of the outlets 19, 2
Rotating dampers 22, 2 are provided between the passages 0, 21 and the passage 17.
3 and 24 are provided. And the dampers 22, 2
One or a plurality of outlets and the passage 17 are selectively communicated by the rotation of 3, 24.

The heat exchanger 80 comprises a multi-tube heat exchanger as shown in FIG. In the present embodiment, the heat exchanger 8
A film damper 25 is provided between the heater 0 and the heater 18. The film damper 25 is movable in the direction of the arrows in FIGS. Further, the film damper 25 is provided with an opening 31 composed of a plurality of holes 30 (FIG. 9). Then, by moving the damper 25 to move the position of the opening 31, the air for heat exchange into the heater 18 is blocked or intercepted.

For example, during heating, the heat exchanger 8
0 is stopped, and the film damper 25 is moved so that one opening 31 is located between the heat exchanger 80 and the heater 18. At this time, when half of the surface 5 (surface length 1) is closed by the film damper, the heat exchange air passes through the heat exchanger 80 as shown by arrows B and D in FIG. The heater 18 is operated in this state. During cooling, the heat exchanger 80 is operated, the film damper 25 is moved, and the heat exchange air is passed through the heat exchanger 80 as shown by arrows A and C, and the flow into the heater 18 is blocked. Then, the heater 18 is stopped. In the air mixing, the heat exchange air is passed through the heat exchanger 80 as shown by arrows A and D, and the heat exchanger 80 and the heater 18 are operated. And heater 1
The heat exchange air flowing along the arrows A and D is mixed downstream of 8.

That is, in the air conditioner according to the present embodiment, the film flow of the heat exchange air passing through the heat exchanger 80 can be changed and controlled by the film damper 25 provided in the heat exchanger 80. Each mode can be set. Therefore, a space for changing the main flow direction of the heat exchange air, which has conventionally been provided in the flow path of the air conditioner, can be omitted, so that miniaturization can be achieved while maintaining excellent performance of the device. can do.

In this embodiment, the heat exchanger 8
0 so as to extend along the direction in which the circular pipe 3 extends.
However, it is also possible to arrange the heater 18 so as to extend in a direction orthogonal to the extending direction of the circular tube 3 of the heat exchanger 80 as shown in FIG. 10, for example. In this case, the moving direction of the film damper 25 is in the vertical direction as shown by the arrow in FIG.

FIG. 11 shows an air conditioner 85 according to a seventh embodiment of the present invention. In the present embodiment, the dampers 26 and 27 constitute a means capable of changing and controlling the main airflow direction of the passing heat exchange air in the heat exchanger 80. That is, in the present embodiment, the damper 26 provided in the heat exchanger 80 and the passage 17
The change control means is constituted by the damper 27 provided in the heat exchanger 80. By adjusting the amount of rotation of the damper 26 and / or the damper 27, the wind direction of the passing heat exchange air in the heat exchanger 80 is adjusted. Is controlled to be changed. Even in such a configuration, downsizing of the air conditioner can be achieved.

FIG. 12 shows an air conditioner 86 according to an eighth embodiment of the present invention. This embodiment shows an example in which the heat exchanger 81 and the film damper 32 shown in FIG. 3 are used, and the main body wind direction in the heat exchanger 81 of the heat exchange air passing therethrough by the film damper 32. Is configured to be able to be changed. Even in such a configuration, size reduction of the device can be achieved.

FIG. 13 shows an air conditioner 87 according to a ninth embodiment of the present invention. In the present embodiment, the slide-type wind shield plate 33 constitutes a unit that can change the main airflow direction of the passing heat exchange air in the heat exchanger 80. Even in such a configuration, size reduction of the device can be achieved.

FIG. 14 shows an air conditioner 88 according to a tenth embodiment of the present invention. FIG. 14 shows a schematic plan view of the apparatus. In the present embodiment, in the heat exchanger 89, the direction of the main flow of the heat exchange air is changed in the above-mentioned plane direction, or the flow is divided in the above-mentioned plane direction. It shows that you can do it.

In FIG. 14, one surface 9 of the heat exchanger 89 is shown.
0 is an air inflow surface, and three surfaces 91, 92, and 93 are air outflow surfaces. The multiple tubes 94 of the heat exchanger 89 are
It is arranged vertically. Three sides 91 of the heat exchanger 89,
A film damper 95 is provided so as to face 92 and 93. The film damper 95 switches the wind direction in the heat exchanger to various modes (that is, any combination of the wind directions indicated by arrows in the drawing). It has become.
Reference numeral 96 denotes a heater core.

As described above, since the mainstream wind direction can be changed to a predetermined direction or divided in the main body of the heat exchanger 89, each branch path 97, It is also possible to send the air after heat exchange to 98,99. The shape of the multitubular heat exchanger 89 can take various shapes other than the square shape shown in the figure.

[0038]

As described above, according to the heat exchanger and the air conditioner of the present invention, the main airflow direction of the heat exchange air passing through the heat exchanger can be changed and controlled. The downsizing of the device can be effectively achieved while maintaining the performance.

[Brief description of the drawings]

FIG. 1 is a perspective view of a heat exchanger according to a first embodiment of the present invention.

FIG. 2 is a plan view of the heat exchanger of FIG.

FIG. 3 is a cross-sectional view of a heat exchanger according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of a heat exchanger according to a third embodiment of the present invention.

FIG. 5 is a schematic perspective view of a heat exchanger according to a fourth embodiment of the present invention.

FIG. 6 is a schematic side view of a heat exchanger according to a fifth embodiment of the present invention.

FIG. 7 is a schematic configuration diagram of an air conditioner according to a sixth embodiment of the present invention.

8 is a perspective view showing an arrangement relationship between a heat exchanger and a heater of the apparatus shown in FIG. 7;

FIG. 9 is an enlarged partial plan view of the film damper of FIG. 7;

10 is a perspective view showing another arrangement relationship between the heat exchanger and the heater of the apparatus shown in FIG. 7, which is different from FIG.

FIG. 11 is a schematic configuration diagram of an air conditioner according to a seventh embodiment of the present invention.

FIG. 12 is a schematic configuration diagram of an air conditioner according to an eighth embodiment of the present invention.

FIG. 13 is a schematic configuration diagram of an air conditioner according to a ninth embodiment of the present invention.

FIG. 14 is a schematic plan view of an air conditioner according to a tenth embodiment of the present invention.

FIG. 15 is a schematic configuration diagram of a conventional air conditioner.

[Explanation of symbols]

1, 8, 11 Upper tank 2, 9, 12 Lower tank 3, 44, 94 Circular tube 4, 5, 10, 13, 45, 90 Surface perpendicular to the inflow direction of heat exchange air 6, 7, 22, 23 , 24, 26, 27, 55, 56,
57 Damper 10a, 10b End 14, 15, 16 Surface 17 Passage 18, 96 Heater 19, 20, 21 Blow Out Port 25 Film Damper 30 Hole 31 Opening 32, 95 Film Damper 33 Slide Windshield 41, 51, 80 , 81, 82, 89 Heat exchangers 42, 43, 52, 53 Tanks 46, 47, 48, 91, 92, 93 Air outflow surfaces 54 Partition plates 83, 85, 86, 87, 88 Air conditioners 97, 98, 99 Fork

Claims (5)

[Claims] 1. A heat exchanger, comprising means for changing and controlling the direction of a mainstream wind of a passing heat exchange air in the heat exchanger. 2. The heat exchanger is a multi-tube heat exchanger.
The heat exchanger according to claim 1. 3. An air conditioner comprising a heat exchanger provided with means capable of changing and controlling the mainstream wind direction of the passing heat exchange air in the heat exchanger. 4. A means for changing and controlling the main airflow direction of the heat exchange air passing through the heat exchanger in the heat exchanger.
An air conditioner, which is provided in a passage. 5. The heat exchanger is a multitubular heat exchanger.
The air conditioner according to claim 3 or 4.