JPH0538928A - Heating apparatus for vehicle - Google Patents

Abstract

PURPOSE:To provide a vehicle heating apparatus, in which expensive waste is made unproducible and also heating performance is improved, by making a duct, interposed between a blower unit and a heater unit, common with an air conditioner. CONSTITUTION:In a duct 10 installed between a blower unit and a heater unit, an evaporator can be mounted, and a through hole, through which cooler piping connected to the evaporator is passed, is drilledly provided. When the duct 10 is used as a heating apparatus, a resistor 50, having air resistance equivalent to that of the evaporator, is installed in the duct 10 to block the through hole 11a with the resistor 50. When the duct 10 is used for an air conditioner, the evaporator is mounted on the duct 10, and cooler piping is led outside via the through hole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle heating system which can be changed to an air conditioning system by mounting an evaporator in a duct interposed between a blower unit and a heater unit.

[0002]

2. Description of the Related Art A conventional vehicle heating system includes a blower unit for blowing a predetermined amount of air from an air outlet in a vehicle compartment,
The heater unit has a built-in heater core that heats the air sent from the blower unit and blown out from the air outlet, and a heater duct installed between the blower unit and the heater unit. The heater duct is used as a cooling unit (evaporator). It is configured so that it can be changed to an air conditioner by replacing it with (built-in). In the prior art, since the pressure loss of the cooling unit is larger than that of the heater duct, the capacity of the blower fan is determined so that a desired air volume can be obtained when the cooling unit is used and used as an air conditioner. ..

[0003]

However, in such a conventional vehicle heating system, there is a problem that an expensive heater duct must be discarded when changing from the heating system to the air conditioning system. .. Further, as described above, since the capacity of the blower fan is determined to be optimum for the air conditioner, the heating device cannot sufficiently heat the air flowing into the heater core, resulting in impaired heating feeling. There's a problem.

An object of the present invention is to provide a vehicle heating device in which a duct interposed between a blower unit and a heater unit is shared with an air conditioner so that expensive waste parts are not generated and heating performance is improved. To provide.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to FIG. 1 showing an embodiment. The present invention is a blower unit for blowing a predetermined amount of air from an air outlet in a vehicle compartment.
A heater unit with a built-in heater core that heats the air sent from this blower unit, an evaporator that can be installed between these units, and a through hole through which a cooler pipe connected to the evaporator penetrates The present invention is applied to a heating device for a vehicle, which has a duct 10 installed therein, and in which an evaporator is mounted in the duct 10 and the specification can be changed to an air conditioner. Then, the resistor 50 having an air resistance equivalent to that of the evaporator is installed in the duct 10, and the resistor 50 is configured to close the through hole (11a), thereby achieving the above-described object.

[0006]

Since the duct 10 for connecting the floor unit and the heater unit is used for the air conditioner (for the cooling unit), when changing the heating device to the air conditioner, it is not necessary to discard the expensive heater duct as in the conventional case. However, it is only necessary to discard the inexpensive resistor 50. Further, since the air volume sent to the heater unit is appropriately regulated by the resistor 50,
The air passing through the heater unit can be heated appropriately and the heating performance can be improved.

Incidentally, in the section of means and action for solving the above problems for explaining the constitution of the present invention, the drawings of the embodiments are used for the purpose of making the present invention easy to understand. It is not limited to.

[0008]

Embodiments of the present invention will be described with reference to FIGS. BACKGROUND ART A vehicle heating system includes a blower unit having a blower for blowing a predetermined amount of air from an outlet in a vehicle compartment, a heater unit having a heater core for heating air sent from the blower unit, and a blower unit. And a duct installed between the heater unit and the heater unit. Then, by installing an evaporator in the duct, the specifications can be easily changed to the air conditioner.

FIG. 1 shows the duct, which is designated by reference numeral 10.
The duct is indicated by. The duct 10 is composed of a lower duct 11 and an upper duct 12 each having a substantially box shape, and is integrated by bringing the opening edges of the upper and lower ducts 11 and 12 into contact with each other and fastening them. The lower duct 11 has an arcuate notch 11
a is formed, and notches (not shown) are formed in the upper duct 12 so as to face the notches 11a. Through the notches, a through hole is formed in the duct 10. When used as an air conditioner, a cooler pipe is inserted into the through hole via a sealing material, and when used as a heating device, the through hole is blocked by a part of a resistor, which will be described later.

Reference numeral 50 is a resistor having substantially the same outer shape as the evaporator and an air passage resistance equivalent to this, and the resistor 50 is fixed in the upper and lower ducts 11 and 12 by means not shown. A plurality of through holes 51 are formed in the resistor 50 in the direction of air flow, and the air resistance can be arbitrarily adjusted by the number and size of the through holes 51 so that the air resistance becomes equal to the air resistance of the evaporator. Can be set. In addition, when the resistor 50 is installed in the duct 10, one side surface 52 of the resistor 50 is installed in the upper and lower ducts 11, 12 as shown in FIG.
The through hole formed by the notch 11a or the like is closed.

In such a heating device, as described above,
Since the air passage resistance of the resistor 50 is made equal to the air passage resistance of the evaporator, the amount of air sent from the blower unit to the heater unit is appropriately regulated, and the air passing through the heater core of the heater unit is heated appropriately. Therefore, the temperature of the warm air blown out from the outlet of the heater unit also becomes an appropriate temperature, and the feeling of heating can be enhanced.

When the heating device is changed to the air conditioning device, first, the upper duct 11 is removed from the lower duct 12 and the resistor 50 is removed.
Remove. Next, as shown in FIG.
0 is housed in the lower duct 11, the cooler pipe 61 is inserted into the notch 11a of the lower duct 11 via a sealing material, and then the upper duct 12 is fastened to the lower duct 11. Therefore, it is only necessary to discard the inexpensive resistor 50, and it is not necessary to discard the heater duct of the expensive injection molded product as in the conventional case, and the waste of parts is reduced. Further, since the through hole of the duct 10 is closed by the side surface 52 of the resistor 50, the sealing material for closing the through hole is not required, and the cost can be reduced.

As shown in FIG. 3, a convex portion 53 may be formed on one side surface of the resistor 50A, and the convex portion 53 may be inserted into the through hole to be closed. In this case, the sealability is improved as compared with the above embodiment, and the position of the protrusion can be changed according to the position of the through hole, so that the degree of freedom in design is increased.

[0014]

According to the present invention, when a heater unit and a blower unit are connected by a duct having a through hole for a cooler pipe and used as a heating device, it has an air passage resistance equivalent to that of an evaporator. Since the resistor that can close the through hole for the cooler pipe of the duct is housed in the duct, when changing the heating device to the air conditioner, all that is necessary is to replace the resistor with an evaporator and discard the resistor. Therefore, waste of parts is reduced. Further, during heating, the amount of air sent to the heater unit is regulated by the resistor, the air passing through the heater unit is heated appropriately, and the temperature of the warm air blown out from the outlet of the heater unit also becomes an appropriate temperature, giving a feeling of heating. Can be increased.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a vehicle heating device according to the present invention.

FIG. 2 is a cross-sectional view illustrating that a through hole of a duct is closed by a resistor.

FIG. 3 is a cross-sectional view showing a modified example in which a through hole of a duct is closed by a resistor.

FIG. 4 is an exploded perspective view showing a state in which the embodiment of FIG. 1 is changed to an air conditioner.

[Explanation of symbols]

 10 Duct 11 Lower Duct 12 Upper Duct 50 Resistor 51 Through Hole 52 Closure Surface 60 Evaporator 61 Cooler Pipe

Claims (1)

[Claims] 1. A blower unit for blowing a predetermined amount of air from an outlet in a vehicle compartment, a heater unit having a heater core for heating air sent from the blower unit, the blower unit and the blower unit. And a duct that is installed between the heater unit and the evaporator can be mounted, and has a through hole through which a refrigerant pipe connected to the evaporator penetrates, and the evaporator is mounted in the duct. In a vehicle heating device whose specifications can be changed to an air conditioner, a resistor having an air resistance equivalent to that of the evaporator is installed in the duct, and the resistor closes the through hole. The vehicle heating system.