JPS60171373A - Refrigerating storehouse - 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 the Invention The present invention relates to refrigerated storages such as vending machines and refrigerators.

Conventional structure and its problems Traditionally, vending machines known as refrigerated storage
This will be explained with reference to FIG. 3.

Reference numeral 1 denotes a main body of a vending machine consisting of a heat insulating box 2, which has a storage chamber 3 therein, and a product shelf 4 is provided in the storage chamber 3. Further, in the storage chamber 3, an evaporator 5. A fan motor 6 is installed to forcefully circulate cold air. The evaporator 5 includes a compressor 7, a capacitor 8.
The capillary tubes 9 are successively connected to form a cooling system.

Further, the compressor 7 is connected in series with a thermostat 10 disposed in the evaporator 5 to detect the temperature inside the storage chamber 3. The fan motor 6 is connected in parallel to the compressor 7 via a timer 11. This timer 11 delays the fan motor 6 for a certain period of time after the compressor 7 stops, and then stops the fan motor 6.

In the configuration described above, the compressor 7 performs intermittent operation using the thermostat 1o, and forcibly circulates cold air cooled by the evaporator 5 using the fan motor 6 to maintain a constant temperature in the storage chamber 3 and perform refrigeration operation. ing. but,
After the fan motor 6t/'i and the compressor 7 are stopped, the timer 11 is turned on for a certain period of time, and the fan motor 7 is turned on.
Perform a lIY extended operation. However, if the evaporator 5 has a large amount of χi (frost), 1, defrosting has not been completed when the fan motor 6 stops, and there is residual frost near the thermostat 10.
was not turned on. Therefore, the compressor 7 is stopped.
lz II) There was a drawback that the time period became long and the temperature distribution inside the refrigerator deteriorated. Unfortunately, when the outside temperature is low, no heat is generated inside the storage compartment 3, so the internal temperature drops and cannot be maintained at the set temperature.

OBJECTS OF THE INVENTION It is therefore an object of the present invention to eliminate these drawbacks, to compensate for the temperature during low evening temperatures, and to completely perform the elimination.

Structure of the Invention In order to achieve this object, the present invention v1 controls the rotation of the fan motor when the compressor is stopped by using a heater and a bimetal timer (Q (I#I E/K) disposed in one valve regulator. This is to ensure that the temperature distribution inside the refrigerator is completely maintained even when the outside temperature is low.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 4 to 7. Since the structure is the same as that of the conventional one except for the electrical circuit, the redundant parts will be explained below. The same numbers will be assigned and detailed explanations thereof will be omitted.

12 is a bimetal timer that controls the operation of the fan motor 6. 13 is a casing of the bimetal timer 12, which is attached to the evaporator 5 and has a bimetal 14. It has a heater 15, and the inside is sealed from the outside with a cover 16.

The bimetal 14 is provided with contacts 17a and 1yb. 18 is a thermostat, which has two circuits of interlocking switches 18a and 18b inside.

Next, the electric circuit will be explained. The compressor 7) is connected in series with the positive contact 18a1 of the switch 18a of the thermostat 18. ? It's L - Lee Mostanoto 18
The heater 15 in the bimetal timer 12 and the bimetal thermostat 19 are sequentially connected to the fan motor 6 from the j1fIM point 18a2 of the switch 18a.The bimetal thermostat 9C51 , turn on and off at the set temperature, for example, turn on at 0℃,
It turns off at 1o°C. 1/This switch 18b is 7
7 is connected in series with motor 6.

In the above configuration, the operation will be explained.

While compressor 7 is running, motor 6 &:l:
2 Inpressosa 7 and thermostat 1 day switch 18
The cold air is forcibly circulated in the storage chamber 3 through the energized pipes C1 and C1, which are connected in parallel by b. , :1
-The temperature of Baborator 5 has decreased and the thermostat is on!・18
is turned off and the compressor 7 stops. At the same time, the switches 18a and 18b of the thermostat 18 are switched, and the bimetal timer 12 is powered up, causing the fan motor 6 to continue operating.At this time, the heater 15 generates heat, so the temperature inside the bimetal timer 12 increases. increases and reaches the OFF temperature, for example, 10° C., the bimetal 14 is reversed and the bimetal thermostat 19 is turned off, so the fan motor 6 is stopped.

After this, the heater 15 is also de-energized, so the temperature inside the bimetal timer 12 gradually decreases, and the bimetal timer 12 is turned off again.
4 is reversed and the fan motor 6 starts operating. The time required for the bimetal 14 to turn from OFF to ON changes depending on the frosting condition around the bimetal timer 12. This cycle is repeated while the compressor 7 is stopped, and the fan motor 6 performs intermittent operation.

In this embodiment, the fan motor 6 provided in the storage chamber 3 repeats 0N-OFF even when the compressor 7 is stopped, and this operating rate also changes depending on the frosting state.
The operating rate of the fan motor 6 is obtained in accordance with the amount of frost, and defrosting is completely performed. In addition, even when the outside temperature is low and there is no frost, the fan motor 6 is operated intermittently at regular intervals.
This prevents the inside of the refrigerator from becoming too cold due to the heat generated.

Effects of the Invention As is clear from the above embodiments, the bimetal reversal time in the bimetal timer changes depending on the frost formation near the bimetal timer attached to the evaporator, so that the operation of the fan motor in the city when the compressor is stopped is improved. The rate changes depending on the mating condition, and complete defrosting is possible. In addition, the fan motor operates intermittently even when there is no heat generation inside the refrigerator at low outside air fAA 'L'J'.
Generates a moderate amount of heat/(This is to prevent the inside of the refrigerator from getting too cold.

[Brief explanation of drawings]

Fig. 1 is a hemostasis diagram of a conventional vending machine, Fig. 2 is a cooling system diagram of Fig. 1, Fig. 3 is an electric circuit diagram of Fig. 1, and Fig. 4 is a diagram of an embodiment of the present invention. front view of vending machine,
5 is a diagram of the cooling system shown in FIG. 4, FIG. 6 is a sectional view of the fan motor control device shown in FIG. 4, and FIG. 7 is an electric circuit diagram of the Abe shown in FIG. 4. 3... Storage room, 6... Evaporator,
6...Fan motor, 12...Bimetal timer, 16...Heater, 18...
·thermostat. Figure 1 ζ3 Figure 0 Σ4 Figure

Claims (1)

[Claims] Evaporator placed in the storage chamber: 1.・The cooling system is equipped with a fan motor, a thermostat that keeps the inside of the storage chamber at a constant temperature, and a bimetal timer with a built-in bimetal and a heater that heats the bimetal and turns it on and off. When the compressor of the refrigerated storage unit stops, the fan motor, heater, and bimetallic electrical circuit are formed through this thermostat.