JPS63297982A - Cold and hot changeover type storage shed - 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 relates to a storage warehouse that can switch between cold and hot operation for storing articles by cooling or heating them.

BACKGROUND OF THE INVENTION Conventionally, vending machines have been generally known as this type of storage that can be switched between cold and hot operation.This conventional vending machine will be explained with reference to FIGS. 4 and 5. Reference numeral 1 denotes a main body of a vending machine having a heat insulating material 2, and the inside of this main body 1 is divided into two product storage chambers 3a and 3b on the left and right, each chamber 3a.

3b is provided with product shelves 4a and 4b, respectively. In addition, evaporators sa and sb for cooling, heaters 6a and eb for heating, and blower fans 7a and 7b for forcibly circulating cold air and warm air to the respective chambers 3a and 3b are arranged in the product storage rooms aa and ab, respectively. There is. And each room 3a, 3
The evaporators sa and sb arranged in bK are connected in series to each other, and include an electric compressor 8, a capacitor 9, a capillary tube A10a, an evaporator 5a, and an evaporator 6b.
A bypass circuit 11 including a cavity 2 recircup B10b that bypasses the evaporator 6a is formed by sequentially connecting capillary tubes A1oa and B1o.
Solenoid valves 12a and 12b are provided at the inlet portions of b, respectively. The electromagnetic valves 12a and 12b are opened and closed by electric signals based on a cold/hot operation selection switching command.

In the above configuration, when both the product storage chambers 3a and 3b are in the cooling operation, the solenoid valve 12a is opened and the solenoid valve 12b is closed, and the refrigerant flows through the refrigerant circuit indicated by the solid line arrow.
The compartments a and 3b were being cooled. In addition, when the product storage compartment 3a is heated and the product storage compartment 3b is refrigerated, the solenoid valve 1
By closing the solenoid valve 2a and opening the solenoid valve 12b, the refrigerant flows through the refrigerant circuit indicated by the dotted arrow to cool only the product storage chamber 3b, and the product storage chamber 3a is heated by the heater 6a. When both chambers 3a and 3b are heated, the electric compressor 8 is stopped and the heaters 8a and 6b are used to store both chambers 3a and 3b.
is operated at high temperature.

As above K, heater 6a, θb, compressor 8, solenoid valve 12
By selecting a and 12b and energizing the product storage chambers 3a and 3b, the combination of cold-cold, hot-cold, and warm-hot operation can be obtained, and one vending machine can simultaneously sell cold products. It was possible to sell hot products.

Problems that the invention aims to solve However, since two solenoid valves and two capillary tubes are used to control the refrigerant circuit, the piping is complicated and the workability during assembly is poor. It had some problems.

The present invention eliminates these drawbacks and requires fewer parts when assembling a refrigerant circuit, does not involve touching pipes or other parts, uses simple piping, and has low electricity costs.
The purpose is to obtain a refrigerant circuit for a storage unit that can switch between cold and hot operation.

Means for Solving the Problems In order to solve the above problems, the cold/hot switching type storage of the present invention connects the evaporators installed in two chambers to the four connection parts of the four-way valve, and This is done by creating a circuit in which refrigerant always flows on one side.

According to the above-described configuration, the present invention allows the refrigerant to flow continuously into the evaporator of the compartment through the four-way valve when it is desired to cool the compartment, and to flow the refrigerant into the evaporator of the compartment continuously through the four-way valve when it is desired to cool one compartment and heat the other. Coolant is cooled by flowing refrigerant only into the area.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1, 2, and 3. Those having the same cooling system as the conventional ones will be given the same reference numerals and the explanation will be omitted.

14 is a four-way valve with ports 16, 17. It has four f8 and f19. The port 1θ is connected to a capillary tube 15, a capacitor 9, and a compressor 8.

The port 17 is connected to the suction port of the evaporator 6, and the port 18 is connected to the discharge port of the evaporator 5a.

The port 19 is connected to the evaporator 6b.

The four-way valve 14 can be switched by an electric signal, and can be used to connect ports 16 and 171, ports 18 and 19, and vice versa.
91 port 17 and port 18 may be connected.

The cold/hot switching operation of the device configured as above will be described. When both the product storage chambers 3a and 3b are in cooling operation, the operation of the compressor 8 is controlled by a refrigeration thermostand (not shown) that controls the chamber 3b. At this time, the four-way valve 14 receives electric signals 16 and 17, 18 and 1.
9 is connected. The refrigerant energizes the capillary tube 16, cools the four-way valve 14 and the evaporator 6a, passes through the four-way valve 14, cools the evaporator 6b, and flows into each chamber 3a, s.
b (refrigerant flow indicated by solid line arrow).

Next, if the product storage compartment 3a is to be heated and the product storage compartment 3b is to be refrigerated, use the cold/warm selector switch (not shown) for the compartment 3a.
When the temperature is changed to warm storage, the heater 6a is energized.

Then, an electric signal is sent to the four-way valve 14, and the ports 1e and 1
9. Once ports 17 and 18 are connected, refrigerant no longer flows into the evaporator 6a.

Then, the ports 1e and 19 are connected, and the refrigerant flows to the evaporator 6b, cooling the chamber 3b (the flow of the refrigerant indicated by the dotted arrow). At this time, the operation of the compressor 8 is controlled so that the chamber 3b is at the refrigerating temperature.

The temperature of one chamber 3a is controlled by a warm heater e& and a thermostat (not shown) K for warming. In the case of co-temperature operation for both chambers 3a and 3b, the compressor 8 is stopped by setting the changeover switches (not shown) for both chambers 3a and 3b to warm, and the warm heaters ea and ebK are energized and installed in the chamber 3a. Both temperature heaters 6a are controlled by a temperature thermostat (not shown).

6b is controlled, and both chambers 3a and 3b are heated.

As described above, according to this embodiment, by using a four-way valve in the cold/hot switching device and reducing the number of cavillary chests to one, the number of parts can be reduced, coast reduction can be achieved, and five-way assembly can be achieved. It is easy to do, the piping is very simple, and the electricity bill is also cheaper.

Effects of the Invention As described above, the present invention has an evaporator for cooling and a heater for heating arranged in two chambers, the evaporator connected to a four-way valve, and a capillary tube and one of the evaporators connected to the other two ends. By providing a cold/hot switching device connected to the , compressor, and condenser, the cold/hot switching switch 1
So, cold-cold.

Combinations of cold-hot and hot-hot operation can be obtained, and not only is it extremely simple to make a single unit, but the number of parts is small, reducing costs, and assembly is easy, making it very easy to use. This simplifies piping, eliminates the need for pipes and other parts, and reduces electricity costs.

Note that the present invention is not limited to vending machines, and similar effects can be obtained with any cold/temperature operation switching storage that has a comparable cooling system.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of a cold/hot switching storage according to an embodiment of the present invention, FIG. 2 is a refrigerant circuit diagram of the cooling unit in FIG. 1, and FIG. 3 is a four-way diagram in FIG. Valve operation diagram,
FIG. 4 is a front sectional view showing the configuration of a conventional cold/temperature operation switching type vending machine, and FIG. 6 is a refrigerant circuit diagram of the cooling unit in FIG. 4. 1... Cabinet, 3a, 3b...
Product storage Mstsaptsb... Evaporator, 6a, 6b... Heater, 8... Compressor, 9... Capacitor, 14... Four-way valve , 15... Capillary tube. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3 Figure 1 /---\- Figure 4 Figure 5

Claims (1)

[Claims] Two storage chambers provided in the main body, a cooling evaporator disposed in each of the two chambers, a heating heater, an evaporator installed in the two chambers, a capillary tube, and a four-way valve; A cold/hot switching storage, comprising a compressor and a condenser, and characterized in that the four-way valve is connected between the capillary tube and the evaporator so that refrigerant always flows to one of the evaporators.