KR0133439Y1 - Defrosting time control device - Google Patents

Abstract

The present invention relates to a defrosting time setting device for adjusting the defrosting time according to the showcase and the high set temperature, more specifically, the temperature can be set differently according to the type of the object to be stored, and generated according to each set temperature state It relates to a defrosting time setting device according to the temperature control change that can effectively remove the frost.

Defrost time setting device of the present invention, for freezing or refrigerated storage of goods, in a showcase including a defrost timer and a temperature controller, a defrost timer and the defrosting timer is configured so that the power is connected for a different set time, the defrost It is characterized by consisting of a control switch connected to each connection terminal of the timer and including a plurality of temperature controllers operated at a predetermined temperature.

Description

Defrost time setting device according to temperature control change

1 is a schematic electrical diagram of a showcase conventionally used.

2 is an electrical wiring diagram of the defrosting time setting device according to the present invention.

Figure 3 is a side cross-sectional view showing the structure of the defrosting time setting device according to the present invention.

4 is a bottom view of the fixed terminal of FIG.

5 is a bottom view of the movable terminal of FIG.

* Explanation of symbols for main parts of the drawings

1: power plug 3: earth leakage breaker

5: Hughes 7: defrost timer

9: defrost heater 11: temperature controller

13: compressor 15: condenser fan motor

17: cooling fan motor 21: control switch

23 case 25 temperature control knob

27: movable terminal 29: movable contact

31: fixed terminal 33: fixed contact

35,37,39: Temperature controller 41: Fixed bracket

P1, P2, P3, P1 ', P2', P3 ': Connection terminal

The present invention relates to a defrosting time setting device for adjusting the defrosting time according to the high internal setting temperature of the showcase, and more specifically, it is possible to set the temperature differently according to the type of the object to be stored, and to generate according to each set temperature state. It relates to a defrosting time setting device according to the temperature control change that can effectively control the frost.

The showcase requires the use of a device that generates cold air in order to keep food such as ice cream displayed on the inside, while keeping products such as beverage cans, ice cream, or fruit in a low temperature chilled or frozen state. The principle of this is described below.

Conventionally used showcase cooling generators include a compressor for compressing a refrigerant into a gas of high temperature and high pressure, a condenser for liquefying the compressed refrigerant, and a liquid for liquefying the high pressure refrigerant pressure discharged from the condenser. An expansion valve for lowering the pressure of the high pressure refrigerant discharged from the condenser and the condenser, a cooler for vaporizing the refrigerant to generate cold air, a condenser fan for dissipating heat to the condenser, and a condenser fan operated by a fan driving motor; It includes a cooling fan for forcibly circulating the cold air generated from the cooler into the showcase.

In the cooling mode for generating cold air normally, the compressor, the cooling fan, and the condenser fan are operated simultaneously by the temperature range set by the temperature controller.

1 is a partial electric wiring diagram of one of the conventionally used showcases, which includes a power plug 1 for supplying power, an earth leakage breaker 3 for protecting a circuit in the event of an overcurrent, and a high voltage or overcurrent A fuse 5 for preventing the dust, a defrost timer 7 which is periodically changed to perform a cooling stroke and a defrost stroke, a defrost heater 9 for removing frost formed on the surface of the cooler, and a refrigerant Compressor 13 for compressing the gas into a high-temperature, high-pressure gas, a condenser fan motor 15 for dissipating heat generated from the condenser, and a cooling fan motor 17 for circulating cold air generated from the cooler. Is shown.

In the normal operation state, the power supplied to the power plug 1 is supplied from the wires L1 and L2 through the defrost timer 7. The supplied power is again applied simultaneously to the compressor 13, the condenser fan motor 15, and the cooling fan motor 17 through the temperature controller 11. Therefore, the compressor 13, the condenser fan motor 15, and the cooling fan motor 17 are set to operate simultaneously.

In this state, when the time set by the defrost timer 7 is changed, for example, a set time such as performing a cooling operation for 6 hours and 30 minutes and operating a defrost heater for 10 minutes, the power is applied to the defrost heater 9. (13), the power applied to the condenser fan motor 15 and the cooling fan motor 17 is cut off, and the operation is stopped.

However, in the conventional showcase having the above structure, the temperature controller 11 was fixed to operate only at a predetermined temperature. That is, the temperature controller 11 applied to the showcase is operated when the detected temperature reaches a predetermined temperature (this is the temperature set at the time of design) set to keep the object in a frozen state, so that the compressor 13 and the cooling fan 17 are operated. It is configured to stop the cooling operation by cutting off the power applied to the.

Therefore, in order to store things that require different freezing or refrigeration temperatures, such as ice cream or beverages, there was a problem in that showcases adjusted to different temperatures must be used separately. In other words, the showcase for storing the beverage and the showcase for storing the ice cream must be purchased separately, so the office has to purchase two types of showcases, which is a waste of the user. In addition, there is a problem in that the display method of the showcase is conventionally limited due to such a temperature setting constraint.

The present invention has been made to solve the above problems, the object of the present invention is to adjust the temperature so that the various objects can be frozen or refrigerated storage, according to the change in the amount of frost generated in accordance with the set temperature It is to provide a defrosting time setting device according to the temperature control change that can effectively perform the defrosting action by setting different defrosting operation time.

Defrost time setting device of the present invention for achieving the above object, for freezing or refrigerated storage of the object, in a showcase including a defrost timer and a temperature controller, the connection terminal is configured so that the power is connected for each different set time It is characterized in that it comprises a defrosting timer, and a control switch including a plurality of temperature controllers connected to each connection terminal of the defrosting timer and operated at a predetermined temperature.

Hereinafter, the temperature control device of the showcase of the present invention will be described in detail with reference to the accompanying drawings.

2 is an electrical wiring diagram of a showcase including a defrosting time setting device according to the present invention. As shown in the figure, a plurality of connection terminals P1, P2, and P3 are further provided in the middle of the timer 7. The difference between the connection terminals P1, P2, and P3 is that the time at which the power is supplied at the same time is different from each other. That is, when power is connected to the connection terminal P1, power is supplied to the defrost heater 9 for about 6 minutes, and 8 minutes and 10 minutes are respectively supplied to the connection terminals P2 and P3. In addition, the connection terminals P1, P2, and P3 are connected to connection terminals P1 ', P2', and P3 'to which temperature controllers operated at different temperatures are connected. Therefore, while the timer 7 is operated, it is located at the connection terminal P3 as shown by the dotted line during the cooling stroke. The position of the connection terminal P3 becomes a position corresponding to the position of the four terminals of the timer 7 in FIG.

In this state, power is applied to all connected connection terminals P1, P2, and P3. Since the connection terminals P1'P2'P3 'of the temperature control switch 21 are connected to at least one connection terminal as shown in the drawing, the compressor motor 13 and the fan driving motors 15 and 17 are connected during the cooling stroke. It works normally. In addition, although not shown, a temperature controller is connected to each connection terminal P1 ', P2', and P3 'of the control switch 21 in series. This is explained in detail with reference to FIG.

When a predetermined time elapses according to the operation of the timer 7, the defrosting stroke is performed in the cooling stroke. At this time, the position of the connection rod of the timer 7 moves to two terminals as shown. Therefore, the power supply is not supplied to the connection terminals P1 ', P2', and P3 'temporarily, and the defrost heater 9 is supplied with power, so that the compressor motor 13 and the fan driving motors 15 and 17 are defrosted. It won't work for a while. The timer 7 can be easily configured according to the prior art.

Then, referring to Figure 3 will be described in detail the structure and operating state of the control switch 21 as described above.

As shown, the control switch 21 is installed inside the case 23 divided into two areas of the upper and lower. In the upper region, a temperature adjusting knob 25 is set by the user for temperature setting. An upper side of the temperature adjusting knob 25 is provided with a movable terminal 27 which is rotatably fixed, and a lower portion which is rotatably fixed. The fixed terminal 31 is provided adjacent to each other.

One movable contact 29 is formed on the inner surface of the movable terminal 27, and the fixed terminal 31 is formed with three fixed contacts 33 spaced apart from each other by a predetermined distance. The movable contact 29 and the stationary contacts 33 are not shown in detail but are electrically connected by means such as wires.

The fixed contacts 33 of the fixed terminal 31 are connected to the temperature controllers 35, 37, and 39, respectively. The thermostats 35, 37, 39 are set to operate at different temperatures. By this setting, the present invention can be adjusted to three different temperature ranges. The temperature controllers 35, 37, and 39 are essentially the same as those shown in FIG. 1, that is, they are operated when the predetermined temperature is reached to control the internal temperature of the refrigerator.

For example, when the connection terminal P3 'is set to -24 ° C, when the internal temperature falls below the temperature, the connection terminal P3' is operated to stop the further cooling administration. Of course, it is apparent to those skilled in the art that the above temperature control can be set to different temperature control as an example for explanation. The user can set an appropriate temperature range by rotating the temperature control knob 23.

In addition, a plurality of grids are formed on the surface of the case 23 so that the temperature controllers 35, 37, and 39 installed inside the case 23 of the control switch 21 can operate at high temperatures. It is desirable to have a structure that allows it to be exposed or directly exposed to air.

4 and 5 show the installation position of the connecting terminal formed on the surface of the movable terminal 27 and the fixed terminal 31 of the temperature control switch 21.

It can be seen that one movable contact 29 is formed at the movable terminal 27 so that the user can select it, and three fixed contacts 33 are formed at the fixed terminal 31 according to the temperature range. The movable contact 29 of the movable terminal 27 is connected to the compressor 13, and the fixed contact protrusion 33 of the fixed terminal 31 is connected to the connection terminals P1 ', P2' and P3 ', respectively. do. Accordingly, the temperature setting is completed by moving the movable contact 29 of the movable terminal 27 and bringing one of the fixed contacts 33 up and down as shown in FIG.

In the above-described temperature control of the present invention, three types of temperature ranges have been set using one showcase, but more types of temperature can be set and controlled by increasing the number of terminals and the number of contacts.

The concrete example of this is demonstrated. It is assumed that the temperature set by the user is connected to the connection terminals P1 and P1 ', and the control temperature of the temperature controller 39 is -18 ° C in a weak cooling state. When the cooling stroke is performed, power is supplied to the compressor 13, the condenser fan motor 15, and the cooling fan motor 17 through the connection terminal P3, so that cool air is supplied into the refrigerator.

In this state, when the temperature in the showcase chamber is lower than −18 ° C., the temperature controller 39 operates to cut off the power supplied to the compressor 13, the condenser fan motor 15, and the cooling fan motor 17. . Therefore, the temperature in the furnace no longer drops. Since the above state is a cooling stroke state, the operation state of the timer 7 is not a problem. When the temperature in the refrigerator is above the set temperature, the temperature controller 39 is operated again to supply power to the compressor 13, the condenser fan motor 15, and the cooling fan motor 17.

When the defrost stroke of the timer 7 is started, power is supplied to the defrost heater 9 normally for a predetermined time (about 6 minutes) to perform defrost. However, after 6 minutes have elapsed, the connection load of the timer 7 is connected to the connection terminal P1. Therefore, the defrost stroke is stopped and power is supplied to the compressor 13, the condenser fan motor 15, and the cooling fan motor 17 to perform a cooling stroke. In this case, the temperature controllers are not controlled by the temperature controllers 35, 37, and 39 of the showcase, and thus the temperature controllers are kept in an on state, so that there is no problem in operation.

As described above, according to the present invention, the temperature can be adjusted to freeze or refrigerate various objects, and the defrosting operation is effectively performed by differently setting the defrosting operation time according to the change in the amount of frost generated by the set temperature. There is an advantage to it.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art to which the present invention can be modified or changed within the spirit and scope of the present invention, and such modifications or changes are made by the appended utility model claims. Should be limited.

Claims (2)

A showcase comprising a defrost timer operable to remove frost and a temperature controller operating at a predetermined temperature, comprising: a defrost timer (7) provided with a plurality of connection terminals (P1, P2, P3) set to operate at different times; A plurality of temperature controllers (35, 37, 39) connected to the respective connection terminals (P1, P2, P3) of the defrost timer (7) and operated at a predetermined temperature; And terminals P1 ', P2', and P3 'connected to the connection terminals P1, P2, and P3, and may set different temperatures, and the connection terminals P1, P2, and P3 according to the set temperatures. Defrosting time setting device comprising a; control switch (21) connected to one of the control to operate for a set time. According to claim 1, wherein the control switch 21 is divided into two areas of the upper and lower cases (23); The case 23 is installed in the upper region temperature control knob 25 for setting the temperature by the user; A movable terminal 27 having a movable contact 29 formed on a surface thereof to be rotatably fixed to an upper side of the temperature control knob 25; A fixed terminal 31 having a plurality of fixed contacts 33 formed on a surface thereof to be rotatably fixed to a lower portion of the movable terminal 27; Temperature controllers 35, 37 and 39 connected to each of the fixed contacts 33; And connection terminals (P1 ', P2', P3 ') connected to the temperature controllers (35, 37, 39), respectively.