JP2571787Y2 - Cooling unit - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling unit constituting a vehicle air conditioner together with an intake unit, a blower unit and a heater unit.

[0002]

2. Description of the Related Art As disclosed in, for example, Japanese Unexamined Utility Model Publication No. 2-26923, a conventional cooling unit includes a case, a heat insulating material (sealing material) provided in the case, and
Heat exchanger (evaporator) housed in the case
And a temperature sensor mounted on the core of the heat exchanger for detecting the temperature of the heat exchanger.

A cooling unit 10 shown in FIG.
Reference numeral 0 denotes a unit case 102 formed by fitting an upper case 102a and a lower case 102b, and an evaporator 103 housed in the unit case 102.
And a heat insulating material 104 provided around the evaporator 103 and a temperature detection sensor 105. The temperature detection sensor 105 is fixed to the core surface of the evaporator 103 by, for example, a clip.
The lead wire extending from the temperature detection sensor 105 is drawn out from a sensor insertion hole 107 formed in the unit case 102 as shown in FIG.

In mounting the temperature detection sensor 105, a sealing member 109 having a slit is first attached to the sensor insertion hole 107, and the temperature detection sensor 105 is inserted through the slit. After the temperature detection sensor 105 is fixed to the core surface of the evaporator 103 by a clip, an adhesive 110 is applied to the sensor insertion hole 107 and dried to prevent air leakage from the sensor insertion hole 107.

[0005]

However, in the conventional cooling unit, as described above, two points, the adhesive and the seal, are used to close the sensor mounting hole (sensor insertion hole). For this reason, when inserting the temperature detection sensor, the seal is easily peeled off, the adhesive may flow to the core side of the evaporator, it takes time for the adhesive to harden, and a large amount of adhesive is used However, there are problems such as the necessity to perform the operation, the difficulty in replacing and changing the position of the temperature detection sensor due to the use of the adhesive, and the necessity of assembling steps.

Therefore, an object of the present invention is to provide a cooling unit that can prevent air leakage from a sensor insertion hole without using an adhesive.

[0007]

SUMMARY OF THE INVENTION However, the present invention
A heat exchanger, a heat insulating material provided around the heat exchanger, a unit case in which the heat exchanger is housed, and a contact portion that abuts when the heat exchanger is housed in the unit case. And a sensor insertion hole formed,
After inserting the temperature detection sensor into the sensor insertion hole, the heat exchanger with the heat insulating material attached to the surroundings is housed in the unit case, and the wire extending from the temperature detection sensor is pressed against the unit case by the heat insulating material. The gap between the sensor insertion hole and the electric wire reaching the sensor insertion hole is closed.

[0008]

Therefore, according to the present invention, a heat exchanger is provided with a sensor insertion hole at a contact portion where the heat exchanger contacts the unit case, a temperature detection sensor is inserted into the sensor insertion hole, and a heat insulating material is provided. In order to store the container in the unit case, the wire extending from the temperature detection sensor can be pressed against the unit case by the heat insulating material to close the gap by the wire, and the gap of the sensor insertion hole can be closed by the heat insulating material. Therefore, the above-mentioned subject can be achieved.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

A cooling unit 1 according to the first invention shown in FIG. 1 is arranged between a blower unit (not shown) and a heater unit, and cools air sent from the blower unit to form a downstream heater. The unit case 2 is formed by fitting the upper unit case 2a and the lower unit 2b, a heat exchanger (evaporator) 3 housed in the unit case 2, and the periphery of the evaporator 3. And a temperature detecting sensor 5.

The temperature detection sensor 5 is disposed at a predetermined position on the downstream side of the evaporator 3, and an electric wire (lead wire) 6 extending from the temperature detection sensor 5 is provided with a sensor insertion hole 8 shown in FIG. Is connected to a thermo-amplifier 7 mounted outside the unit case 2.

The gap between the sensor insertion hole 8 and the heat insulating material 4 is closed.
Is pressed against the inner surface of the unit case 2 by the elastic force of the above, and the gap is closed. Thus, air leakage from the sensor insertion hole 8 can be prevented.

In mounting the temperature detecting sensor 5, first, the thermo-amplifier 7 is mounted outside the upper unit case 2a, and the temperature detecting sensor 5 extending from the thermo-amplifier 7 is inserted through a sensor insertion hole 8, and a lead wire is provided. 6 is drawn out for a predetermined length. Insulation material 4 in lower unit case 2b
Puts the evaporator 3 attached to the periphery, and fits the upper unit case 2a and the lower unit 2b. At this time,
The heat insulating material 4 presses the lead wire 6 against the inner surface of the upper unit case 2a so as to eliminate the gap. Thereafter, the temperature detection sensor 5 is fixed at a predetermined position, and the mounting of the temperature detection sensor 5 is completed.

In the second embodiment shown in FIGS. 3 and 4 (a), in order to fix the lead wire 6 at a predetermined position, the lead wire guide 20 is moved from the heat insulating material 4 near the sensor insertion hole 8 to a predetermined position. As shown in FIG. 4 (b), the lead wire guide 20 is formed by fixing a pair of lead wire guide portions 20a and 20b to the inner surface of the upper unit case 2a. Thus, holding portions 21a and 21b for holding the lead wires 6 are provided at portions extending from the heat insulating material 4. Thus, the temperature detection sensor 5 can be fixed at a predetermined position near the evaporator 3.

In the cooling unit according to the third embodiment shown in FIGS. 5 and 6A and 6B, a groove 10 having a predetermined length is inserted from the sensor insertion hole 8 into which the lead wire 6 is inserted.
Is formed, and the lead wire 6 is inserted into the groove 10. The groove 10 has a claw 11 for holding the lead wire 6.
Is formed, whereby the lead wire 6 is fixed to the groove 10. Thereby, disconnection of the lead wire 6 due to the corner contact of the sensor insertion hole 8 can be prevented. In this embodiment, a sealing member 9 is attached to the groove 11 and the upper surface of the sensor insertion hole 8 in order to further enhance the fixing of the lead wire 6 and further improve the sealing performance.

[0016]

As described above, according to the present invention, the sensor insertion hole is formed in the contact portion of the heat exchanger, and the sensor insertion hole is sealed by the heat insulating material provided around the heat exchanger. At the same time, by pressing an electric wire extending from the temperature detection sensor against the inner surface of the unit case, the gap can be closed, and air leakage can be prevented. Thereby, the number of parts can be reduced, and since the adhesive is not used, the position of the temperature detection sensor can be easily moved and exchanged.

Further, since a groove having a predetermined length is formed from the sensor insertion hole, and the electric wire is inserted into and held in the groove, breakage of the electric wire due to a corner contact of the sensor insertion hole can be prevented. It is.

[Brief description of the drawings]

FIG. 1 is a partially cutaway sectional view of a cooling unit according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged cross-sectional view near a sensor insertion hole according to the first embodiment.

FIG. 3 is a sectional view of a cooling unit according to a second embodiment of the present invention.

FIG. 4A is a partially enlarged sectional view of the vicinity of a sensor insertion hole according to a second embodiment, and FIG. 4B is a perspective view showing a configuration of a lead wire guide.

FIG. 5 is a sectional view of a cooling unit according to a third embodiment of the present invention.

FIG. 6A is a partially enlarged cross-sectional view near a sensor insertion hole according to a third embodiment, and FIG. 6B is a partial cross-sectional view along AA.

FIG. 7 is a side view of a conventional cooling unit.

FIG. 8 is a partially enlarged sectional view of the vicinity of a conventional sensor insertion hole.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooling unit 2 Unit case 2a Upper unit case 2b Lower unit case 3 Evaporator 4 Heat insulating material 5 Temperature detection sensor 6 Electric wire (lead wire) 7 Thermo amplifier 8 Sensor insertion hole 9 Seal member 10 Groove 11 Claw

Claims (1)

(57) [Scope of request for utility model registration] 1. A heat exchanger, a heat insulating material provided around the heat exchanger, a unit case in which the heat exchanger is stored, and a heat exchanger when the heat exchanger is stored in the unit case. After inserting the temperature detection sensor into the sensor insertion hole, a heat exchanger with a heat insulating material attached to the periphery is housed in the unit case, and the heat insulation is provided. A cooling unit wherein an electric wire extending from a temperature detection sensor is pressed against a unit case by a material to close a gap between the sensor insertion hole and an electric wire reaching the sensor insertion hole.