JPH10109521A - Vehicular air-conditioner with temperature control box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heat or cool a small temperature control box efficiently. SOLUTION: A heat exchanger 23 which can cool or heat a passing air and a cross flow fan 24 are stored in an air passage formed in a unit 10. At least one part of a temperature control box 11 is the inner space of the unit 10 and arranged to a position in which the air changed its direction in a curve shape can flow smoothly by the cross flow fan 24 and a ventilation passage 30 communicating with a car inside is formed in the temperature control box 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner equipped with a temperature control box capable of air conditioning the inside of a vehicle and cooling or heating juices and the like.

[0002]

2. Description of the Related Art As a conventional air conditioner for a vehicle with a temperature control box, for example, as shown in FIG.
Are provided integrally with the cooler unit 2. In this vehicle air conditioner, the air taken into the cooler unit 2 by the sirocco fan 3 is cooled by the evaporator 4 and blown into the vehicle, and flows into the temperature control box 1 communicating with the cooler unit 2, After cooling the stored juices, etc.
It returns to the upstream side of the sirocco fan 3 and circulates again.

Further, as shown in FIG. 8, a vehicle air conditioner having a structure in which a temperature control box 1 is provided separately from a cooler unit 2 is also disclosed. In this vehicle air conditioner, air cooled by the evaporator 4 in the cooler unit 2 is switched by the damper 6 to blow air into the vehicle or the temperature control box 1.

[0004]

However, in the former air conditioner for a vehicle, only the temperature control box 1 is attached to the cooler unit 2, and the size of the temperature control box 1 is increased. There is. In addition, when the airflow direction is forcibly changed by blocking the air flow at the bypass door 5, there is a problem that a wind noise is generated. In addition, there is also a problem that a load is applied to the sirocco fan 3 because the air flow is not smooth, and power consumption increases.

On the other hand, in the latter vehicle air conditioner, the temperature control box 1 is provided separately from the cooler unit 2,
As described above, the problem of increasing the size is inevitable. Further, it is necessary to heat-insulate the temperature control box 1 itself.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle air conditioner with a temperature control box which is small and can heat or cool the temperature control box efficiently.

[0007]

In order to achieve the above object, according to the present invention, an air passage formed in a unit is provided with:
In a vehicle air conditioner containing a heat exchanger and a cross flow fan, at least a part of a temperature control box is extended in an internal space of a unit, and an air passage is changed in a curved direction by the cross flow fan. Arranged above,
Further, an air passage for blowing air from the air passage downstream of the cross flow fan to the inside of the vehicle is formed in the temperature control box.

The temperature control box is arranged so that at least a part of the air passage in the unit is located below the temperature control box, and the temperature control box and the air passage are connected to each other by a drain at this position. preferable.

In particular, it is preferable that the temperature control box is disposed near the heat exchanger.

[0010] In addition to the first ventilation path that connects the air passage downstream of the cross flow fan of the unit and the temperature control box, a second air path that connects the temperature control box and the air passage upstream of the cross flow fan. It is preferable to form a ventilation path and to provide a damper that can be switched to one of the in-unit circulation mode and the in-vehicle ventilation mode.

In this case, while the downstream side of the air passage of the temperature control box is formed in the cover of the temperature control box, the damper is provided in the air passage of the cover to change the wind direction to the inside of the vehicle. It may be possible to stop the blowing.

It is preferable to provide a mode switching control means for switching the damper to one of a circulation mode in the unit and a ventilation mode in the vehicle based on a difference between the air conditioning condition in the vehicle and the temperature control condition in the temperature control box.

It is preferable to provide a lid detecting means for detecting the open / closed state of the lid, and an air volume control means for suppressing or stopping the air supply based on a detection signal from the lid detecting means.

Preferably, the temperature control box is configured to be detachable from the unit.

The heat exchanger is constituted by an evaporator dedicated to cooling, a heater is disposed in the temperature control box, and the cross flow fan can be rotated forward and backward.
When the cross flow fan rotates forward, the heat exchanger is driven,
At the time of reverse rotation, the heat exchanger may be stopped and cooling / heating control means for turning on the heater may be provided.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 to FIG. 3 are a side view, a plan view and a front view of a vehicle air conditioner with a temperature control box for the rear in a vehicle, showing an embodiment of the present invention. This air conditioner generally includes a unit 10 and a temperature control box 11 detachably provided to the unit 10, and is provided on a rear panel 12 at the rear in the vehicle, as shown in FIG.

The unit 10 has a rectangular box receiving recess 13 on the upper surface. This box accommodation recess 13
Since a temperature control box 11 to be described later is accommodated in the device, a heat insulating structure is not required. Inside the unit 10,
A substantially U-shaped air passage 14 along the box accommodating recess 13
Are formed. Also, on both side walls of the unit 10,
Suction ports 15 communicating with one end of the air passage 14 are respectively formed, and each suction port 15 can be opened and closed by a damper 16. Each damper 16 is configured to rotate about a support shaft 16 a via a link mechanism 18 by driving of an actuator motor 17. Further, ducts 19 extending upward from sides and opening to the rear panel 12 are connected to the respective suction ports 15. Opposite side walls in the box accommodating recess 13 have first and second ends respectively communicating with both ends of the air passage 14.
A ventilation port 20 and a second ventilation port 21 are provided.
2 are provided.

In the air passage 14, from the upstream side,
A heat exchanger 23 and a cross flow fan 24 are provided, respectively. The heat exchanger 23 is a vehicle interior front air conditioner 2
5 is disposed in the middle of the refrigerant pipe bypassed from 5, and is located near the lower part of the temperature control box 11 so that the upper surface thereof contacts the lower surface of the bottom of the box housing recess 13. The heat exchanger 23 directly cools or heats the air passing therearound and the temperature control box 11 by selecting a refrigerant circulation circuit with the cooling / heating changeover switch 26. Further, the rapid switch 27 is turned on, and the suction port 15 and the blower port 33 that have been opened are closed by the dampers 16 and 32, thereby switching to the in-unit circulation mode. The cross flow fan 24 is a conventionally known one in which a plurality of blades extending in the axial direction are arranged in a row in the circumferential direction, and are connected in the axial direction via a connecting plate. The cross flow fan 24 is rotated by the drive of the blower motor 28, and generates a curved flow indicated by an arrow in FIG. 1 without difficulty and efficiently.

The unit 10 has an air passage 1
A drain pipe 29 for draining dew condensation generated when the passing air is cooled by the heat exchanger 23 to the outside of the vehicle is connected to the inside of the pipe 4.

The temperature control box 11 includes a box body 30
And a lid 31 that is rotatably connected to the box main body 30 about a support shaft 30a. The temperature control box 11 is detachably provided in the box accommodating recess 13 of the unit 10. Thereby, the temperature control box 11 can be washed in a circle and cleaning can be easily performed.

The inside of the box body 30 is provided with a plurality of slits in order to allow air to flow smoothly without blocking the first ventilation port 20 of the unit 10 and to prevent the vibration noise of the stored juices and the like. A net (not shown) formed in a shape is provided. In addition, dew water or the like adhering to the surface of the juice or the like to be housed can be drained out of the vehicle through a drain pipe 29 from the drain port 22 of the box housing recess 13 communicating with the box body 30. A sensor 30b is provided at an upper opening edge of the box main body 30, and detects the open / closed state of the lid 31.

On the other hand, the lid 31 is box-shaped, and a communication port 32 is formed in the bottom surface, and an air outlet 33 is formed in the front side and the front side. Each air outlet 33 can change the air direction and stop the air flow by a damper 34 (see FIG. 2B) provided therein. The temperature control box 11
With the unit 10 mounted in the center of the rear panel 12 and mounted in the box housing recess 13, only the lid 31 is exposed from the rear panel 12 and opens forward in the vehicle. The duct 19 opens on the upper surface of the rear panel 12 on both sides of the unit 10.

In the vehicle air conditioner with the temperature control box having the above-described configuration, the control device 25 of the vehicle interior front air conditioner 25 is used.
By a, the air conditioning in the vehicle and the temperature control of the contents in the temperature control box 11 are performed. Hereinafter, the operation will be described with reference to the flowchart shown in FIG.

That is, first, the air conditioning conditions in the vehicle are determined (step S1). The determination of the air-conditioning condition is performed based on the blast temperature in the in-vehicle front air conditioner 25 determined based on various conditions inside and outside the vehicle. If the blast temperature is within a predetermined range of the outside air temperature, it is determined that the blast mode is set. If the blast temperature is lower than the predetermined range temperature, the mode is determined to be the cooling mode.

If it is determined that the air conditioner is in the air blowing mode, it is determined that there is no need to perform air conditioning in the vehicle depending on the rear air conditioner in the vehicle. 33 is closed to set the in-unit circulation mode (step S2).

On the other hand, if it is determined that the mode is not the air blowing mode, it is determined whether or not the rapid switch 27 is turned on to determine whether or not the temperature of the temperature control box 11 needs to be rapidly controlled (step). S3). Further, it is determined whether or not the air conditioning condition is different from the temperature control of the temperature control box 11 by determining which is selected by the cooling / heating switch 26 (step S4).

If none of the conditions is satisfied, the dampers 16 and 32 are turned to open the suction port 15 and the air blowing port 33 to set the vehicle in the air blowing mode (step S5). If any one of the above conditions is met,
By rotating the dampers 16 and 32, the suction port 1
5 and the air outlet 33 are closed to set the in-unit circulation mode (step S2).

Then, the cross flow fan 24 is driven (step S6). In the case of the in-vehicle air blowing mode in which the suction port 15 and the air blowing port 33 are opened by the dampers 16 and 32, the vehicle interior air is sucked into the air passage 14 from the duct 19 through the suction port 15, and the warm air from the first ventilation port 20. After passing through the tone box 11, the air is blown into the vehicle from the air outlet 33 of the lid 31. Thereby, the air whose temperature has been adjusted by the heat exchanger 23 passes through the inside of the temperature adjustment box 11 to cool or heat the contents, and air-conditions the inside of the vehicle through the ventilation port 33 provided in the lid 31. .

Further, the suction port 1 is controlled by the dampers 16 and 32.
In the in-unit circulation mode in which the air outlet 5 and the air outlet 33 are closed, the air circulates in the unit 10, so that the air in the vehicle compartment is not sucked into the unit 10 and blown out from the air outlet 33 into the vehicle. . As a result, when the temperature of the temperature control box 11 needs to be rapidly controlled,
By controlling the temperature of a small amount of air circulating between the temperature control box 4 and the temperature control box 11, it is possible to effectively cool or heat the contents in the temperature control box 11. On the other hand, when the mode selected by the cooling / heating switch 26 does not match the mode controlled by the in-vehicle front air conditioner 25, and the air-conditioning condition does not match the temperature control of the temperature control box 11 (during the in-vehicle cooling operation). In the case where it is necessary to heat the contents, or when the contents need to be cooled during heating in the vehicle, the contents can be cooled or heated separately from the air conditioning in the vehicle.

When the air conditioning in the vehicle and the temperature control of the contents in the temperature control box 11 are started in this way, the temperature control box 1
It is determined whether or not the lid body 31 has been detected based on the presence or absence of a detection signal from the sensor 30b provided in Step 1 (Step S).
7). If it is detected, the lid 31 is in a closed state, so that control such as air conditioning in the vehicle is continued. If not detected, the lid 31 is in an open state. Blower motor 2 so that
8 is controlled to stop or stop the rotation of the cross flow fan 24 (step S8). Thereby, the occupant does not feel discomfort. The sensor 30b
Alternatively, a limit switch or the like can be used. Also,
This detection is performed before the lid 31 is opened by, for example, a knob operation for releasing the engagement state between the box main body 30 and the lid 31 (this structure is a well-known conventional one not shown). Is preferred. As a result, it is possible to prevent blowout to the inside of the vehicle in advance.

If the temperature control box 11 is accommodated with water droplets or the like adhering to the container, the box accommodation recess 13
Can be discharged into the air passage 14 of the unit 10 through a drain port 22 formed in the bottom surface of the unit.

As described above, in the vehicle air conditioner with the temperature control box, the cross flow fan 24 is used to make the air flow in the unit 10 curved and the temperature control box 11 is formed in the unit 10. Since it is configured to be housed in the box housing recess 13 thus formed, it is very compact. Moreover, the temperature control box 11 is provided in the box accommodation recess 13, and the lid 3 is provided in the temperature control box 11.
Since each 1 plays a role as a heat insulating material by the air inside thereof, a heat insulating structure in these portions becomes unnecessary, and the structure can be simplified and manufactured at low cost.

In the above embodiment, the case where the present invention is applied to an in-vehicle rear air conditioner has been described, but it goes without saying that the present invention may be applied to an in-vehicle front air conditioner.

In the above embodiment, the suction port 15 and the ventilation port 33 are opened and closed by the dampers 16 and 32, thereby switching between the in-unit circulation mode and the in-vehicle ventilation mode. May go.

Further, in the above embodiment, the heat exchanger 2
3 is applicable to both cooling and heating, the heat exchanger 23 is constituted by an evaporator dedicated to cooling, and generates heat in the temperature control box 11 by a battery power supply as shown in FIG. The PTC heater 35 may be accommodated. In this case, it is preferable that the PTC heater 35 be disposed so as to close the second ventilation port 21 formed in the side surface of the box housing recess 13. Then, in the case of cooling or cooling in the temperature control box 11, the cross flow fan 24 and the heat exchanger 23 are driven in the same manner as described above. On the other hand, in the case of heating or heating in the temperature control box 11, the cross flow fan 24 is rotated in the reverse direction, and the heat exchanger 23 is stopped. Thereby, the air is blown to the PTC heater 35 through the second ventilation port 21 and the inside of the temperature control box 11 can be heated. However, in this case, it is preferable to close the suction port 15 with the damper 16 in consideration of the heating capacity of the PTC heater 35.

[0037]

As is apparent from the above description, according to the vehicle air conditioner with a temperature control box according to the present invention, at least a part of the temperature control box is formed in the internal space of the unit and the cross flow fan is provided. Since it is disposed on the extension of the air passage that is changed in a curved shape by the curve, and the temperature control box has an air passage for blowing air from the air passage on the downstream side of the cross flow fan to the inside of the vehicle, It can be formed very compact. In particular, the air can be blown without difficulty by the cross flow fan, and the temperature control of the temperature control box and the air conditioning in the vehicle can be realized efficiently.

Further, the temperature control box is disposed so that at least a part of the air passage in the unit is located below the temperature control box, and the temperature control box and the air passage are connected to each other by a drain at this position. Therefore, there is no need to separately provide a drainage structure, and wastewater treatment can be performed at a low cost with a simple configuration.

Further, since the temperature control box accommodated in the unit is arranged close to the unit and in the vicinity of the heat exchanger, more effective temperature control is expected as compared with the temperature control using only the air blower. it can.

Further, in addition to the first ventilation path connecting the downstream portion of the air passage of the unit and the temperature control box, a second ventilation path connecting the temperature control box and the upstream portion of the air passage is formed. Since a damper that can be switched to one of the internal circulation mode and the vehicle ventilation mode is provided, an appropriate temperature control state can be selected according to the vehicle air conditioning conditions and the like.

In particular, by forming the downstream side of the ventilation path of the temperature control box on the lid of the temperature control box and providing the damper in the ventilation path of the lid, the direction of air flow to the inside of the vehicle or the ventilation Can be stopped, it is not necessary to form an in-vehicle ventilation structure separately from the temperature control box, and a structure can be easily switched between the in-unit circulation mode and the in-vehicle ventilation mode.

Further, a mode switching control means for switching the damper to one of a circulation mode in the unit and a ventilation mode in the vehicle based on a difference between an air conditioning condition in the vehicle and a temperature control condition in the temperature control box is provided. Therefore, a more appropriate temperature control can be automatically performed according to the difference between the air conditioning condition in the vehicle and the temperature control condition in the temperature control box. Further, since the cover body detecting means for detecting the open / close state of the lid body, and a blower amount control means for suppressing or stopping the blower based on a detection signal from the cover body detecting means, the cover body When the vehicle is opened, air does not blow out to the inside of the vehicle, and the occupant does not feel uncomfortable.

Since the temperature control box is configured to be detachable from the unit, the temperature control box and the box housing recess can be easily cleaned.

Further, while the heat exchanger is constituted by an evaporator dedicated to cooling, a heater is disposed in the temperature control box, and the cross flow fan can be rotated forward and reverse. Cooling and heating control means for driving the heat exchanger, stopping the heat exchanger at the time of reverse rotation, and turning on the heater is provided, so that the temperature control box can be cooled and heated with a simple configuration at low cost. .

[Brief description of the drawings]

FIG. 1 is a side view of a vehicle air conditioner with a temperature control box according to the present invention.

FIG. 2 is a plan view of a vehicle air conditioner with a temperature control box according to the present invention.

FIG. 3 is a front view of the vehicle air conditioner with a temperature control box according to the present invention.

FIG. 4 is a schematic diagram showing a state in which the vehicle air conditioner with the temperature control box of FIG. 1 is disposed on a rear panel of an automobile.

FIG. 5 is a flowchart showing air conditioning and temperature control in the vehicle air conditioner with a temperature control box according to the present invention.

FIG. 6 is a sectional view of another vehicle air conditioner with a temperature control box.

FIG. 7 is a schematic diagram of a vehicle air conditioner with a temperature control box according to a conventional example.

FIG. 8 is a schematic view of a vehicle air conditioner with a temperature control box according to another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Unit 11 Temperature control box 23 Heat exchanger 24 Cross flow fan 30 Box body (blower path)

Claims (9)

[Claims] 1. A vehicle air conditioner in which a heat exchanger and a cross flow fan are accommodated in an air passage formed in a unit, wherein at least a part of a temperature control box is provided in an internal space of the unit, It is disposed on the extension of the air passage that is changed in a curved shape by the cross flow fan, and forms an air passage in the temperature control box that blows air from the air passage downstream of the cross flow fan to the vehicle interior. A vehicle air conditioner with a temperature control box. 2. The temperature control box is disposed so that at least a part of the air passage in the unit is located below the temperature control box, and the temperature control box and the air passage are connected to each other by a drain at the position. The vehicle air conditioner with a temperature control box according to claim 1. 3. The air conditioner for a vehicle with a temperature control box according to claim 1, wherein the temperature control box is disposed near the heat exchanger. 4. In addition to a first ventilation path that connects the air passage downstream of the cross flow fan and the temperature control box of the unit, the temperature control box communicates with an air passage upstream of the cross flow fan. While forming the second ventilation path,
The vehicle air conditioner with a temperature control box according to any one of claims 1 to 3, further comprising a damper that can be switched to one of a unit circulation mode and a vehicle ventilation mode. 5. The air flow path of the temperature control box is formed downstream of the cover of the temperature control box while the damper is provided in the cover of the temperature control box. 5. The air conditioner for a vehicle with a temperature control box according to claim 4, wherein the ventilation can be stopped. 6. A mode switching control means for switching the damper to one of a circulation mode in a unit and a ventilation mode in a vehicle based on a difference between an air conditioning condition in a vehicle and a temperature control condition in a temperature control box. Claim 4
Or a vehicle air conditioner with a temperature control box according to 5. 7. A cover detecting means for detecting an open / closed state of the cover, and a blowing amount control means for suppressing or stopping the air supply based on a detection signal from the cover detecting means. The vehicle air conditioner with a temperature control box according to any one of claims 1 to 6. 8. The vehicle air conditioner with a temperature control box according to claim 1, wherein the temperature control box is configured to be detachable from a unit. 9. While the heat exchanger is constituted by an evaporator dedicated to cooling, a heater is disposed in the temperature control box, and the cross flow fan can be rotated forward and backward. The temperature control box according to any one of claims 1 to 4, further comprising cooling / heating control means for driving the heat exchanger, stopping the heat exchanger at the time of reverse rotation, and turning on the heater. -Equipped air conditioner for vehicles.