JPH07332712A - Cool storage panel and cool storage unit for cooling equipped with panel - Google Patents

Abstract

PURPOSE:To improve the efficiency of heat exchange between a cool storage panel and indoor air by applying water repellent surface treatment on the surface of a hollow vessel accommodating an evaporator for cool storage and a cool storage mate rial. CONSTITUTION:An air convection passage (arrow signs) from an air intake 5 to a cold air outflow port 6 is formed at the side of front surface of a cool storage panel 3 while water repellent treatment is applied on the front surface of the cool storage panel 3 or the side surface of the air convection passage of a hollow vessel 13. Upon radiating cold heat from a cool storage unit, indoor air enters a case 4 and cooled by flowing down through the air convection passage while contacting with the front surface of the cool storage panel 3. According to this operation, moisture in the indoor air is condensed on the front surface of the cold heat accumulating panel 3, however, the condensed water is repelled by repellent treatment applied on the front surface of the cool storage panel 3 and flows down smoothly along the front surface of the cool storage panel 3. According to this method, drain will never preclude heat transfer between the cool storage panel 3 and the indoor air whereby the efficiency of heat exchange between the cool storage panel 3 and the indoor air can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cool storage panel suitable for cooling a nap room and a cool storage unit for cooling equipped with the cool storage panel.

[0002]

2. Description of the Related Art An example of a conventional vehicle air conditioner is shown in FIG.
Is shown in. A main cooling unit A having a main air conditioner evaporator 25, a blower 26, etc. is installed below the instrument panel 53, and a cold storage evaporator 29 and a cool storage material are provided in a nap room 51 formed in the rear part of the passenger compartment 50. A cold storage panel B having 28 etc. is installed.

A clutch 20 from a running engine (not shown)
When the compressor 21 is driven via the, the refrigerant discharged from the compressor 21 enters the condenser 22, where it radiates heat to the outside to be condensed and liquefied. The liquid refrigerant is branched through the receiver 23, most of which is adiabatically expanded by the expansion valve 24, evaporated by cooling the vehicle interior air by the main air conditioning evaporator 25, and then compressed through the pressure control valve 17. Return to machine 21.

The branched residue is adiabatically expanded by the expansion valve 27, and then evaporated by cooling the regenerator material 28 by the regenerator evaporator 29, and is combined with the refrigerant flowing out from the pressure regulating valve 17 and sucked into the compressor 21. To be done.

By adjusting the set pressure of the pressure adjusting valve 17, the amount of refrigerant flowing into the cold storage evaporator 29 is adjusted. In FIG. 4, 52 is a curtain, 54 is a nap bed,
56 is a drain pan and 57 is a drain hose.

[0006]

In the above-mentioned conventional apparatus, when the water in the room air is condensed on the surface of the cool storage panel B during the operation, and the amount of the condensed water is large, the heat between the cool storage panel B and the room air is increased. There is a problem that the replacement rate deteriorates and the nap room 51 cannot be sufficiently cooled.

[0007]

SUMMARY OF THE INVENTION The present invention has been invented to solve the above-mentioned problems. The gist of the first invention is to provide a hollow regenerator with a built-in regenerator and regenerator material. A cool storage panel for cooling air by bringing it into contact with the surface of a container, wherein the surface of the container is subjected to a water-repellent surface treatment.

The gist of the second aspect of the present invention is to form an air flow path on the front side of the cool storage panel by covering a cool storage panel having an evaporator and a cool storage material in a hollow container with a case. Along with the above cool storage panel, in a cool storage unit for cooling that is provided with a drain pan under the cool storage panel,
A cool storage unit for cooling is characterized in that a water repellent surface treatment is applied to a surface of the cool storage panel on the air-flow path side.

[0009]

According to the present invention, when the cool storage unit is allowed to cool, the room air enters the case and flows through the air convection path while flowing in contact with the front surface of the cool storage panel to be cooled. This causes water in the room air to condense on the front surface of the cool storage panel, and the condensed water is repelled by the water repellent treatment applied to the front surface and flows down along the front surface to drop into the drain pan.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT One embodiment of the present invention is shown in FIGS. In FIG. 1, reference numeral 3 is a cool storage panel, which is a hollow container 13 having a rectangular plate shape, in which a cool storage evaporator 1 and a cool storage material 2 are incorporated. The cold storage panel 3 is covered by a case 4, a slit-like air intake 5 is provided substantially horizontally in the upper front portion of the case 4, and is substantially horizontal in the lower front portion. A horizontally long cold airflow outlet 6 extending horizontally is provided.

A louver 7 for opening and closing the cold air outlet 6 is provided rotatably around a horizontal axis 8.
On the front side of the cold storage panel 3, an air convection channel 14 extending from the air intake 5 to the cold air flow outlet 6 is formed, and on the front surface of the regenerator panel 3, that is, on the surface of the hollow container 13 on the air convection channel 14 side, a water repellent treatment is applied. Has been applied.

A drain pan 9 is installed below the cold storage panel 3, and a drain hose 10 is connected to the drain pan 9. A heat insulating material 11 is arranged behind the cold storage panel 3. In addition, 12 is a mounting plate.

Cooling storage unit A thus constructed
As shown in FIG. 2, is installed substantially horizontally in the middle part of the rear wall H of the nap room C formed in the rear part of the passenger compartment B of the truck. In FIG. 2, D is the curtain, E is the driver's seat,
F is a steering wheel and G is a nap bed.

A refrigerant circuit is shown in FIG. Compressor via clutch 30 by a running engine (not shown)
When 31 is driven, the gas refrigerant discharged from this compressor 31 is condensed in the condenser 32. The liquid refrigerant is branched through the receiver 33, most of which is adiabatically expanded by the expansion valve 34 and evaporated by cooling the air inside the vehicle compartment by the main air conditioning evaporator 35, and then passes through the pressure regulating valve 39 to the compressor. Return to 31.

The remaining branch is adiabatically expanded by the capillary tube 37 through the electromagnetic on-off valve 36, then enters the cold storage panel 3, and is evaporated by cooling the cold storage material 2 by the cold storage evaporator 1, and the pressure control valve 39. It is merged with the refrigerant that has flowed out of and is sucked into the compressor 31.

The amount of refrigerant flowing into the cold storage evaporator 1 is adjusted by adjusting the set pressure of the pressure adjusting valve 39. When the electromagnetic opening / closing valve 36 is closed, the refrigerant does not flow into the cold storage evaporator 1.

However, when the cooling load during summer daytime is large, the electromagnetic on-off valve 36 is closed and the entire amount of the refrigerant discharged from the compressor 31 flows through the main air conditioning evaporator 32. The air inside the vehicle compartment is cooled by the evaporator 32 for air conditioning.

When the night-time cooling load becomes small, the electromagnetic storage valve 36 is opened to perform the cold storage operation. During this cold storage operation, the refrigerant flows through the main air conditioning evaporator 32 and the cold storage evaporator 1. As a result, the cold storage material 2 becomes the cold storage evaporator 1
The cold heat is stored by exchanging heat with the refrigerant flowing through it and being cooled to change its phase to become a solid. At this time, since the cold airflow outlet 6 is closed by the louver 7, the indoor air does not drop through the air convection path 14 in the case 4, and therefore, the cool air is not discharged from the cold storage panel 3.

The truck is parked in the early morning and the driver takes a nap C
When taking a nap inside, the cooling operation is performed. During this cooling operation, the engine is stopped. The cold air flow outlet 6 is opened by opening the louver 7. Then, the passenger compartment air enters the case 4 through the air intake port 5 and is cooled by heat transfer and radiation from the cool storage unit 3 in the process of descending the air convection path 14 to become cool air.

This cold air flows out from the cold airflow outlet 6 into the nap chamber C by natural convection to cool the nap chamber C and suppress its temperature rise for a certain time (for example, 2 hours). By this cooling, the cold storage material 2 undergoes a phase change and returns to a gel state.

During this cooling operation, the moisture in the room air is condensed on the surface of the container 13 of the cold storage panel 3 on the side of the air passage 14, but since this surface is treated with a water-repellent surface,
The condensed water becomes drain and is repelled, so that it flows down along this surface, drops into the drain pan 9, and is discharged through the drain hose 10. Therefore, since a large amount of drain does not stay on the surface of the container 13, heat transfer between the cool storage panel 3 and room air is not hindered.

[0022]

According to the present invention, when air is cooled by flowing while contacting with the surface of the container of the cold storage panel, the water content in the air is condensed on the surface of the container. It is made water repellent by the water repellent treatment applied to and smoothly flows down along this surface. As a result, a large amount of drain does not stay on the surface of the container, so the thickness of the drain that adheres to the surface of the container becomes thin, and this drain prevents heat transfer between the cold storage panel and air. Is reduced, and therefore the heat exchange efficiency between the cold storage panel and the air is improved.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention, (A) is an external perspective view of a cold storage unit, and (B) is a sectional view taken along line BB of (A).

FIG. 2 is a schematic side view showing an installation procedure of the cold storage unit.

FIG. 3 is a refrigerant circuit diagram of the vehicle air conditioner according to the above embodiment.

FIG. 4 is a schematic configuration diagram of a conventional vehicle air conditioner.

[Explanation of symbols]

 3 Cold Storage Panel 13 Container 1 Cooling Evaporator 2 Cool Storage Material 4 Case 5 Air Intake 6 Cold Air Flow Out 14 Air Flow Channel 9 Drain Pan

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[Procedure amendment]

[Submission date] September 20, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location F24F 1/00 F25B 5/02 B F28D 20/02

Claims (2)

[Claims] 1. A cool storage panel for cooling air by bringing it into contact with the surface of a hollow container containing a cool storage evaporator and a cool storage material, wherein the surface of the container is subjected to a water-repellent surface treatment. Cold storage panel. 2. A cold storage panel having an evaporator and a cool storage material built in a hollow container is covered with a case to form an air flow path on the front side of the cool storage panel and a drain pan is provided below the cool storage panel. In the installed cool storage unit for cooling, a cool storage unit for cooling, characterized in that a surface of the cool storage panel on the air-flow path side is subjected to a water-repellent surface treatment.