JPS611961A - Air conditioner for automobile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention air-conditions the interior of an automobile, and also provides air conditioning for passengers 2...
.

The present invention relates to an air conditioner for automobiles that can cool drinking water and produce ice.

Conventional configuration and its problems Figure 1 shows the outline of a conventional air conditioner for automobiles.

As shown in the figure, the refrigerant compressor 1. Condenser 2° Receiver 3. The expansion means 4 and the air conditioning evaporator 5 were arranged in an annular manner. In such a configuration that cools drinking water such as canned drinks for passengers inside the vehicle, a portion of the cold air from the air conditioning evaporator 6 for cooling the vehicle interior is provided on a dash board or the like. The device cooled the box-shaped refrigerator box 6 by blowing air into it, but the temperature of the cold air was approximately 1.
The temperature was higher than 0°C, which meant that it did not cool sufficiently, and it was not possible to produce ice, so it did not function adequately as a refrigerator-freezer.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks and makes it possible to cool drinking water such as soft drinks and to manufacture and store ice.

Structure of the Invention The automotive air conditioner of the present invention includes a refrigerant compressor, a condenser provided downstream of the refrigerant, and a branching section provided downstream of the condenser that divides the condensed refrigerant liquid into two directions. , a first opening/closing means and a first expansion means for refrigerant flow connected to the branch part, and an air conditioning refrigerant circuit that flows to the refrigerant compressor via an air conditioning evaporator, and a first 2 expansion means, a refrigeration evaporator, and a refrigeration refrigerant circuit that flows to the refrigerant compressor via a second opening/closing means provided downstream from the refrigeration evaporator, and is capable of handling beverages such as canned juice. DESCRIPTION OF EMBODIMENTS OF THE INVENTION An embodiment of the present invention that can efficiently cool water and produce and store ice will now be described with reference to FIGS. 2 to 4. FIG. 2 is a system diagram of the main parts of an automobile air conditioner according to an embodiment of the present invention. In FIG. Since the second opening/closing means 16 is closed, the refrigerant is supplied to the refrigerant compressor 7. Condenser8. The liquid receiver 92 reaches the branch part 10, and from there the first opening/closing means 11, which is an air conditioning refrigerant circuit. First expansion means 12 and air conditioning evaporator 1
3 and returns to the refrigerant compressor 7 again. Next, when only the cooling and preservation of drinking water such as canned drinks and the production and storage of ice are performed and the interior of the vehicle is not air-conditioned, the first opening/closing means 11 is closed and the second opening/closing means 16 is closed. will be released. Therefore, the refrigerant is transferred to the refrigerant compressor 7. The condenser 8, the liquid receiver 91 reach the branch 10, and from there the second expansion means 14, which is a refrigerant circuit for refrigeration. Refrigeration evaporator 15. A cycle is performed in which the refrigerant flows through the second opening/closing means 16 and returns to the refrigerant compressor 7 again. When both the cooling and refrigeration functions in the vehicle interior are performed at the same time, the first opening/closing means 11. both of the second opening/closing means 16 are opened;
The refrigerant flows into both the air conditioning refrigerant circuit and the refrigeration refrigerant circuit.

FIG. 3 is a system diagram of essential parts of an air conditioner for an automobile in another embodiment of the present invention. 3 differs from FIG. 2 in that a second opening/closing means 17 is provided between the 5...7 branch portion 1o and the second expansion means 14 in the refrigerant circuit for refrigeration. When only the interior of the vehicle is cooled, only the first opening/closing means 11 is opened and the refrigerant flows only to the air conditioning refrigerant circuit side. When only partial refrigeration is performed, the second opening/closing means 16 and the third opening/closing means 17 are opened, the first opening/closing means 11 is closed, and the refrigerant flows only to the refrigeration refrigerant circuit side. Next, when both air conditioning and refrigeration are performed, the first to third opening/closing means 11
．． 16 and 17 are all opened and the refrigerant flows into both the air conditioning refrigerant circuit and the refrigeration refrigerant circuit.

In FIGS. 2 and 3, if the refrigerant is flowing from the branch part 10 to the refrigeration refrigerant circuit side whether singly or at the same time, the refrigerant is flowing to the refrigeration evaporator 16 and the refrigerant is flowing to the refrigerant circuit provided separately. - While cooling the inside of the refrigeration unit, if the separately provided unit temperature detection means detects that the temperature inside the refrigeration/freezing unit has decreased sufficiently, a separately provided control circuit will cause the refrigerant compressor 7 to and stop the second
The opening/closing means 16 is closed. In FIG. 3, the third opening/closing means 17 is also closed at this time. By closing the second opening/closing means 16, it becomes possible to maintain the low pressure and low temperature of the refrigerating evaporator 15 for a period of time. This is because when the second opening/closing means 16 is closed, the low pressure that the refrigeration evaporator 16 had previously maintained for refrigeration/freezing is transferred to the suction side of the refrigerant compressor 7 and the air conditioner. In equilibrium with the refrigerant pressure on the refrigerant circuit side, the pressure
This prevents the cooling effect of the refrigerating evaporator 15 from being suddenly lost due to a rise in temperature.

The cooling effect is maintained when the refrigerant compressor 7 in the refrigeration evaporator 16 is stopped by the second and third opening/closing means 16.17.
The configuration shown in FIG. 3, in which the evaporator 1 and
Since the required mass refrigerant circulation amount flowing through the refrigerant circuit 5 is smaller than that in the air conditioning refrigerant circuit side, and the pipe line 18 can be made thin and insulated, the cooling effect can be similarly maintained.

FIG. 4 is a concavity in a vehicle interior showing the arrangement of a refrigerating/freezing unit of an air conditioner for an automobile according to an embodiment of the present invention. In FIG. 4, a refrigerating/freezing unit containing a refrigerating evaporator 15 can be provided, for example, in a dash board section 19 or a console section 20.

In the apparatus having the above configuration, the refrigeration evaporator 15 is connected to the branch part 1
Since it is formed as a refrigerant circuit for refrigeration separate from 0,
By using the small-diameter insulated pipe line 18, the pipe can be routed freely without having to worry about the structural design of the vehicle itself.

Effects of the Invention As described above, in the present invention, a refrigerant circuit for refrigeration separate from the refrigerant circuit for air conditioning is formed from the branch part and a refrigerant evaporator is provided. It is possible to cool and keep drinking water cold, produce and store ice, and when the thermostat of a refrigeration/freezer unit is activated, it is possible to maintain the cooling effect for a while, so the structural insulation of the unit is Combined with cold storage, it enables energy-saving refrigeration. Furthermore, refrigeration
Since the refrigeration unit uses relatively small-diameter opening/closing means and small-diameter pipe lines, it also has the advantage of being able to be manufactured at a low overall cost.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing a conventional air conditioner for an automobile, FIG. 2 is a system diagram of an air conditioner for an automobile according to an embodiment of the present invention, and FIG. 3 is a system diagram showing an air conditioner for an automobile according to another embodiment of the present invention. FIG. 4 is a system diagram of the air conditioner, and is a diagram of the interior of the vehicle showing the arrangement of the refrigeration and freezing units of the air conditioner for an automobile in an embodiment of the present invention. 7... Refrigerant compressor, 8... Condenser, 1o... Branch, 11... First opening/closing means, 12... First expansion means, 13...・・Evaporator for air conditioning, 14・・
・・Second expansion means, 16・・・・refrigeration evaporator,
16...Second opening/closing means, 17...Third opening/closing means. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4

Claims (2)

[Claims] (1) A refrigerant compressor, a condenser provided on the downstream side of the refrigerant, a branch section provided downstream of the condenser that divides the condensed refrigerant liquid into two directions, and a branch section connected to the branch section that controls the refrigerant flow. a first opening/closing means, a first expansion means, an air conditioning refrigerant circuit flowing to the refrigerant compressor via an air conditioning evaporator, a second expansion means and a refrigeration evaporator branched from the branch part; The air conditioner for an automobile further comprises a refrigeration refrigerant circuit that flows to the refrigerant compressor via a second opening/closing means provided downstream from the refrigeration evaporator. (2) The air conditioner for an automobile according to claim 1, wherein a third opening/closing means is provided in the circuit between the branch portion and the second expansion means.