KR101660425B1

KR101660425B1 - Multi-functional and energy saving type large refrigerating apparatus

Info

Publication number: KR101660425B1
Application number: KR1020160047617A
Authority: KR
Inventors: 심정갑; 곽영전
Original assignee: 주식회사삼원기연
Priority date: 2016-04-19
Filing date: 2016-04-19
Publication date: 2016-09-28

Abstract

The present disclosure relates to a multifunctional power saving type large-sized refrigerator capable of maintaining the defrosting efficiency semi-permanently without periodically replacing the redemption sensor, and keeping the article in a fresh state for a long time.
According to an embodiment of the present invention, there is provided a refrigerator comprising: a refrigerator body having a storage space formed therein and a door provided at one side; A condensing unit provided outside the refrigerator body; The evaporation heat exchanger is installed in the storage space of the refrigerator main body and is connected to the condensing unit in a refrigerant circulation manner and has a plurality of heat absorbing fins protruded to be spaced apart from each other. A unit cooler having a blowing fan for cooling the blower; Wherein a pair of elastic legs to be fitted between the heat absorbing fins of the evaporation heat exchanger are formed on both sides of the elastic legs, and at the ends of the elastic legs, mutually conductive contacts are formed when the elastic legs come close to each other, Detection sensor; A defrost heater installed on the evaporator / heat exchanger side of the unit cooler and generating heat according to a sensor signal of the redemption sensor; Ventilation means installed in the refrigerator body for sensing and forcibly discharging noxious gas in the storage space; And a controller installed in the refrigerator body and controlling operation of the condensing unit, the unit cooler, the enemy image sensor, the defrost heater, and the ventilation means.

Description

MULTI-FUNCTIONAL AND ENERGY SAVING TYPE LARGE REFRIGERATING APPARATUS [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-sized refrigerator for storing articles such as foods, agricultural products, livestock products, aquatic products, etc. in a low temperature state.

Unless otherwise indicated herein, the description set forth in this identification section is not prior art to the claims of this application and is not to be construed as prior art as described in this identification section.

A large refrigerator is a facility for keeping foods, agricultural products, livestock products, aquatic products, etc., at a low temperature, for example.

A large refrigerator generally includes a condensing unit that includes a compressor and a condensation heat exchanger integrally to circulate the refrigerant to form a refrigerating cycle and a unit cooler that generates cold air required for refrigeration or freezing through heat exchange between the inside air and the refrigerant, .

A unit cooler applied to a large refrigerator includes a housing, an evaporation heat exchanger provided inside the housing, a blowing fan installed on one side of the housing, and a terminal block for forming internal wiring such as various electric parts in the housing. The evaporation heat exchanger includes a refrigerant tube arranged in the housing, and a plurality of heat-absorbing fins are provided on an outer surface of the refrigerant tube.

In the unit cooler, the refrigerant is circulated through the condensation heat exchanger and the evaporation heat exchanger by the forced circulation force by the compressor. The air sucked by the blowing fan to pass through the evaporation heat exchanger is supplied to the evaporation heat exchanger to heat the refrigerant, So that the internal temperature of the large refrigerator is cooled to a predetermined temperature.

Meanwhile, in the unit cooler, the moisture contained in the indoor air is condensed on the evaporation heat exchanger, in particular, on the heat absorbing fin in the course of heat exchange between the room air and the evaporation heat exchanger, thereby generating frost.

Such frost causes problems such as increase of internal temperature, decrease of current required, increase of required power due to decrease of evaporation pressure and suction pressure, increase of discharge air temperature, decrease of air volume and poor heat transfer function.

A defrost heater for removing frost is installed in the housing of the unit cooler in order to prevent the aforementioned problem caused by the occurrence of frost. Such a defrost heater is formed in a structure in which a heating coil is embedded in a cylindrical case.

However, the conventional defrost heater is not operated only when a frost is generated, but is set to operate at a constant time by a timer system, which is disadvantageous in terms of efficiency.

In order to improve the defrosting efficiency, an infrared sensor for red-on-infrared sensing is recently used in order to detect whether or not the infrared sensor is turned on and off according to the light emission and the reception of the infrared ray. Such an infrared sensor for the red image sensor is disclosed in Korean Patent Publication No. 10-1402705 (Apr. Published in Korean Patent Application No. 10-2011-0024428 (published on Mar. 3, 2011), and Korean Patent Laid-Open Publication No. 10-2013-0036858 (published on April 15, 2013).

Infrared sensors applied for infrared detection usually have a service life of about 7 years, so they must be replaced regularly after a certain period of time after installation of a large refrigerator. However, in reality, the replacement of defective infrared sensor or maintenance of defective infrared sensor is not performed properly, and defrost efficiency is rapidly deteriorated due to malfunction related to defrost.

Further, in the case of a conventional large-sized refrigerator, even if a harmful gas such as ethylene gas is generated from some articles being refrigerated, separate ventilation measures can not be taken immediately, so that oxidation or corruption of the entire article in refrigerated storage can be promoted There was also a problem.

In addition, in the case of a conventional large-sized refrigerator, a urethane foam panel foamed with Freon gas is applied for insulation of a wall, which is not environmentally friendly.

The present invention provides a multi-function power saving type large-sized refrigerator which can maintain the defrosting efficiency semi-permanently without periodically replacing the redemption sensor, and can keep the article refrigerated for a long time in a fresh condition.

The present invention also provides a multifunctional power saving type large refrigerator which can be environmentally friendly.

Further, it is obvious that the present invention is not limited to the technical problems described above, and another technical problem may be derived from the following description.

According to an embodiment of the present invention, there is provided a refrigerator comprising: a refrigerator body having a storage space formed therein and having a door on one side; A condensing unit provided outside the refrigerator body; The evaporation heat exchanger is installed in the storage space of the refrigerator main body and is connected to the condensing unit in a refrigerant circulation manner and a plurality of heat absorbing fins are protruded so as to be spaced apart from each other. A unit cooler having a blowing fan for cooling the blower; Wherein a pair of elastic legs to be fitted between the heat absorbing fins of the evaporation heat exchanger are formed on both sides of the elastic legs, and at the ends of the elastic legs, mutually conductive contacts are formed when the elastic legs come close to each other, Detection sensor; A defrost heater installed on the evaporator / heat exchanger side of the unit cooler and generating heat according to a sensor signal of the redemption sensor; Ventilation means installed in the refrigerator body for sensing and forcibly discharging noxious gas in the storage space; And a controller installed in the refrigerator body and controlling operation of the condensing unit, the unit cooler, the enemy image sensor, the defrost heater, and the ventilation means.

In addition, the unit cooler may include an ionizer for providing negative ions to the air volume by the blowing fan.

Further, the redemption sensor may be formed in a "U" shape by the pair of elastic legs.

According to an embodiment of the disclosed subject matter, the defrost efficiency can be maintained semi-permanently without replacement of a redemption sensor having a predetermined service life.

In addition, immediate ventilation of harmful gas and inhibition of mold or harmful bacteria caused by anion can keep the article in a fresh condition for long-term refrigeration.

In addition, the insulation of the wall can be made eco-friendly.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a multi-function power saving type large refrigerator according to an embodiment of the present invention; FIG.
FIG. 2 is a view illustrating a state of use of a redemption sensor in a multi-function power saving type large refrigerator according to an embodiment of the present invention. FIG.
3 is an operational view of the red light image sensor of FIG. 2;
4 is a perspective view of an image sensing sensor in which an elastic member is interposed between elastic legs.
5 is a block diagram of a multi-function power saving type large refrigerator according to an embodiment of the present invention.

Hereinafter, configurations, operations, and effects of a multi-function power saving type large refrigerator according to a preferred embodiment will be described with reference to the accompanying drawings. For reference, in the following drawings, each component is omitted or schematically shown for convenience and clarity, and the size of each component does not reflect the actual size, and the same reference numerals denote the same components throughout the specification. And reference numerals for the same components in individual drawings are omitted.

1 and 2, a multifunctional power saving large-capacity refrigerator 1 according to an embodiment of the present invention includes a refrigerator body 1 having a storage space 11 formed therein and a door 13 provided at one side thereof A condensing unit 20 provided outside the refrigerator body 10 and a condenser unit 20 installed in the storage space 11 of the refrigerator body 10 and connected to the condensing unit 20 in a refrigerant circulation manner, And a blowing fan 33 for cooling the inside of the storage space 11 by providing an air volume to the evaporation heat exchanger 31 at the other side of the evaporation heat exchanger 31, A pair of resilient legs 41 are provided on both sides of the cooler 30 and a heat absorbing fin 31a of the evaporation heat exchanger 31, When the elastic legs 41 are brought close to each other by the red light on the heat absorbing fin 31a, A defrost heater 50 installed in the unit cooler 30 and generating heat in response to a sensor signal of the redemption sensor 40 and a defrost heater 40 provided in the refrigerator body 10, A ventilation unit 60 installed in the refrigerator main body 10 for sensing and discharging harmful gas in the storage space and forcibly discharging the ventilating unit 60 to the condenser unit 20, the unit cooler 30, the redemption sensor 40, 50 and a controller 70 for controlling the operation of the ventilation means 60.

Here, the refrigerator body 10 is a constituent member in which articles are stored and a body frame in which constituent members to be described later are operably installed is formed.

A storage space 11 in which various articles such as food, agricultural products, livestock products, aquatic products and the like are stored in a low temperature state is formed inside the refrigerator body 10 and a storage or withdrawal of the articles is performed on one side of the refrigerator body 10 A door 13 is provided so as to be openable and closable so that a worker can enter and exit the storage space 11.

As a heat insulating panel applied to the wall of the refrigerator body 10, a foam panel foamed by a fluorocarbon gas is not used but an environmentally friendly urethane foam panel is used, which is foamed by carbon dioxide or nitrogen gas. The refrigerator body 10 may be used for various purposes and may be designed and constructed in various scales according to the purpose of use.

A condensing unit 20 is provided outside the refrigerator body 10 described above. The condensing unit 20 is a component for circulating and supplying the refrigerant to the evaporation heat exchanger 31 side of the unit cooler 30 to be described later.

The condensing unit 20 includes a compressor for compressing and discharging the refrigerant at a high temperature and a high pressure, a condensing heat exchanger connected to the compressor for condensing high temperature and high pressure refrigerant discharged from the compressor, and a refrigerant connected to the condensing heat exchanger, And an expansion valve which expands to a low temperature and low pressure easily for evaporation.

Since such a condensing unit 20 is the same as the condensing unit according to the known art, further detailed description will be omitted for the sake of simplification of the description.

The unit cooler 30 is installed in the storage space 11 of the refrigerator body 10 described above. The unit cooler 30 is a component for cooling the internal air of the storage space 11 through evaporation of the refrigerant circulated from the condensing unit 20 to provide cool air to the storage space 11,

An evaporator / heat exchanger (31) is provided at one side of the unit cooler (30). The evaporation heat exchanger 31 is connected between the expansion valve of the condensing unit 20 and the compressor so as to circulate refrigerant therewith to heat the refrigerant expanded by the expansion valve with air volume by the blowing fan 33 to easily vaporize the refrigerant .

The evaporation heat exchanger 31 has a structure of a known evaporator for a refrigeration cycle in which a plurality of heat-absorbing fins 31a are protruded and formed on a refrigerant pipe arranged in various forms such as, for example, zigzag.

A blower fan 33 is provided on the other side of the unit cooler 30. The air blowing fan 33 forcibly blows the air in the storage space 11 to the evaporation heat exchanger 31 to provide the heat required for evaporating the refrigerant and cools the inside of the storage space 11 through cold air blowing.

The unit cooler 30 is also provided with an ionizer 35. The ionizer 35 provides a large amount of negative ions to the air volume by the air blowing fan 33 to kill molds or noxious bacteria generated in the storage space 11 and suppress the generation thereof, Allows the goods to remain fresh and fresh for a long time without corruption.

The ion generating principle and structure of the ionizer 35 are already known, and a detailed description thereof will be omitted for the sake of simplification of the description.

A redemption sensor 40 is installed between the heat absorption fins 31a of the evaporation heat exchanger 31 described above. The redemption detection sensor 40 is a constituent member that can instantaneously perform defrosting by the defrost heater 50 as it senses an enemy image on the heat absorption fin 31a and transmits a signal to the controller 70. [

2, a pair of resilient legs 41 of a thin plate shape sandwiched between the heat absorption fins 31a of the evaporation heat exchanger 31 are formed on both sides of the resilient leg portion 41, And has an overall "∪" character shape.

However, the pair of resilient legs 41 are normally brought into close contact with each other between the heat absorbing fins 31a of the evaporation heat exchanger 31, If the structure is restored to its normal state afterwards, it can be formed into various shapes including a W-shaped structure.

At the end of the elastic leg portion 41, mutually conductive contact points 43 are formed respectively when the elastic leg portions 41 are brought close to each other by the red light on the heat absorbing fin 31a.

3, the elastic member 45 may be interposed between the pair of elastic legs 41 so that the redemption sensor 40 can be easily restored to normal after defrosting. At this time, it is preferable that the elastic member 45 has a shape of a coil spring in which a thin wire is wound at 360 to 720 degrees so that the pair of elastic legs 41 can be close to each other at a time.

4, the redemption sensor 40 is tightly fixed between the heat absorption fins 31a of the evaporation heat exchanger 31 by elasticity of the pair of elastic legs 41. However, The pair of elastic leg portions 41 are pushed inward by the frost, so that the contact 43 is electrically connected. In this case, the redemption sensor 40 transmits the ON signal to the controller 70, which will be described later, so that the defrosting heater 50 is activated so that defrosting can be performed.

When the frost is melted on the heat absorbing fin 31a by the operation of the defrost heater 50, the contact 43 is separated by the elasticity of the pair of elastic legs 41, The defrosting heater 40 stops the defrost heater 50 as it transmits the OFF signal to the controller 70.

In the unit cooler 30, the defrost heater 50 is installed to be capable of generating heat. The defrost heater 50 is a constituent member for allowing the unit cooler 30 to operate normally by removing the frost which has been formed on the heat absorbing fin 31a of the evaporation heat exchanger 31 of the unit cooler 30.

Usually, when the frost rises on the heat absorbing fin 31a of the evaporation heat exchanger 31, the flow of air is interrupted and the efficiency of evaporating the refrigerant is lowered, and the cooling efficiency of the unit cooler 30 is lowered. The defrost heater 50 melts and removes the frost which has been formed on the heat absorbing fin 31a, thereby keeping the evaporating efficiency of the coolant and the cooling efficiency of the unit cooler 30 constant.

Since the defrost heater 50 has only a difference in that it is actuated by a signal to the enemy detection sensor 40 having a special structure, its configuration and installation place are the same as those of the defrost heater for the unit cooler according to the known technology. For the sake of simplicity, further detailed description will be omitted.

In addition, the refrigerator body 10 is provided with ventilation means 60. The ventilation means 60 serves to forcibly discharge a harmful gas such as an ethylene gas in the storage space 11 to the outside to prevent the acid in the storage space 11 from being obstructed.

The ventilation means 60 is installed inside the storage space 11 and includes a gas sensor 61 for sensing the concentration of harmful gas such as ethylene gas and delivering a signal to the controller 70 to be described later, A ventilation window 63 which is openably and closably provided on the wall of the ventilation window 10 and which is opened and closed under the control of the controller 70 according to the concentration value of the noxious gas measured by the gas sensor 61, And a ventilation fan 65 that is driven to rotate when the ventilation window 63 is opened to ventilate the inside air of the storage space 11.

The ventilation fan 65 may include an exhaust fan for forcibly discharging the air inside the refrigerator body 10 to the outside and an inlet fan for allowing the outside air to flow into the refrigerator body 10.

When the concentration of the noxious gas is detected by the gas sensor 61 to be equal to or higher than the set value, the ventilation window 66 is opened and the ventilation fan 65 is driven to ventilate. When the concentration of the noxious gas in the storage space 11 drops below the set value due to the ventilation, the ventilation fan 65 is stopped and the ventilation window 63 is closed.

In addition, since the excessive amount of outside air is introduced into the refrigerator body 10 by the ventilation means 60, the temperature of the storage space 11 may be raised higher than the temperature required for refrigeration and freezing, When an excessive temperature rise is detected by the temperature sensor 80, the controller 70 temporarily stops the ventilation means 60, restores the internal temperature to an appropriate level, and controls the ventilation means 60 to operate again desirable.

The controller 70 is installed in the refrigerator main body 10. The controller 70 includes an enemy detection sensor 40, a gas sensor 61, a temperature sensor 80 to be described later, The unit cooler 30 including the condenser unit 20 and the ionizer 35, the defrost heater 50 and the ventilation means 60 in accordance with the signals from the humidity sensor 90 and the humidity sensor 90. [

To this end, the controller 70 is connected to the redemption sensor 40, the gas sensor 61, the temperature sensor 80 and the humidity sensor 90, which will be described later, and is connected to the condensing unit 20, (30), the defrost heater (50), and the ventilation means (60).

The storage space 11 of the refrigerator body 10 may be further provided with a temperature sensor 80. The temperature sensor 80 measures the temperature in the storage space 11 in real time so that the operation of the condensing unit 20 and the unit cooler 30 is controlled by the controller 70 so as to reach the set temperature when the temperature is out of the set temperature .

In other words, when the temperature in the storage space 11 measured by the temperature sensor 80 is higher than the set temperature, the condensing unit 20 and the unit cooler 30 are operated, and when the temperature measured by the temperature sensor 80 The operation of the condensing unit 20 and the unit cooler 30 is stopped when the temperature in the storage space 11 is lower than the set temperature. The temperature sensor 80 is electrically connected to the controller 70.

In addition, the humidity sensor 90 may be further provided in the storage space 11 of the refrigerator main body 10 described above. The humidity sensor 90 serves to measure the humidity in the storage space 11 in real time so that the operation of the condensing unit 20 is controlled by the controller 70 so as to reach the set humidity when the humidity is outside the set humidity.

In other words, when the humidity in the storage space 11 measured by the humidity sensor 90 is higher than the set humidity, the condensing unit 20 is activated and the humidity in the storage space 11 measured by the humidity sensor 90 The operation of the condensing unit 20 is stopped when the humidity is equal to or lower than the set humidity. The humidity sensor 90 is also electrically connected to the controller 70 in the same manner as the temperature sensor 80.

In the multifunctional power-saving large-size refrigerator 1 according to an embodiment of the present invention, the defrost heater 50 is operated only when an image of the heat absorbing pin 31a is sensed by the redemption sensor 40, The defrost heater 40 has excellent energy efficiency as compared with the defrost heater 40 which is operated at a constant time without any defrosting. Further, since the redemption detecting sensor 40 is mechanically turned on / off by the elasticity of the pair of elastic legs 41, the redemption detecting sensor 40 is semi-permanently .

In the case of the multifunctional power saving type large-size refrigerator 1 according to the embodiment of the present invention, the unit cooler 30 is provided with the ionizer 35 so that a large amount of anion is contained in the air volume by the air blowing fan 33, The generation of fungi or noxious bacteria in the storage space 11 is suppressed, so that the products in the storage space 11 can be stored in a fresh state for a long time without corruption.

In the multifunctional power saving type large refrigerator 1 according to an embodiment of the present invention, when it is detected that the harmful gas generated in the storage space 11 is above a predetermined concentration, the internal air containing the harmful gas by the ventilation means 60 The outside air is discharged and the outside air is introduced into the inside, so that the acid lung of the article can not be promoted due to the harmful gas, and the article can be kept fresh for a longer time.

Also, since the urethane foam panel foamed by carbon dioxide or nitrogen gas is used for insulation of the wall of the refrigerator body 10, it is environmentally friendly.

In addition, in the case of the multifunctional power saving type large-size refrigerator 1 according to an embodiment of the present invention, if the temperature and humidity in the storage space 11 are set to specific values, the temperature sensor 80 and / The temperature and humidity in the storage space 11 are always maintained at a predetermined value under the control of the controller 70 by the sensor signal of the humidity sensor 90. [

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken in conjunction with the present invention. It is to be understood that various equivalents and modifications may be substituted for those at the time of the present application. It is to be understood, therefore, that the above description is intended to be illustrative, and not restrictive, and that the scope of the present invention will be defined by the appended claims rather than by the foregoing description, All changes or modifications that come within the scope of the equivalent concept are to be construed as being included within the scope of the present invention.

1: Multi-function power saving large refrigerator
10: Refrigerator body
11: Storage space
13: Entrance
20: Condensing unit
30: Unit cooler
31: evaporation heat exchanger
31a: heat absorbing pin
33: blowing fan
35: Ionizer
40:
41: elastic leg
43: Contact point
45: elastic member
50: Defrost heater
60: Ventilation means
61: Gas sensor
63: Ventilation windows
65: Ventilation fan
70: controller
80: Temperature sensor
90: Humidity sensor

Claims

1. A refrigerator comprising: a refrigerator body having a storage space formed therein and a door provided at one side thereof;
A condensing unit provided outside the refrigerator body;
The evaporation heat exchanger is installed in the storage space of the refrigerator main body and is connected to the condensing unit in a refrigerant circulation manner and has a plurality of heat absorbing fins protruded to be spaced apart from each other. A unit cooler having a blowing fan for cooling the blower;
Wherein a pair of resilient legs of a thin plate shape sandwiched between the heat absorbing fins of the evaporation heat exchanger are formed on both sides so as to correspond to each other in a pair and an end portion of the elastic leg portion is connected to the resilient leg portion when the resilient leg portions come close to each other An object detection sensor for forming a contact;
A defrost heater installed in the unit cooler and generating heat according to a sensor signal of the redemption sensor;
Ventilation means installed in the refrigerator body for sensing and forcibly ventilating the noxious gas in the storage space;
A controller installed in the refrigerator body and controlling operation of the condensing unit, the unit cooler, the enemy image sensor, the defrost heater, and the ventilation means;
A temperature sensor provided in the storage space and measuring a temperature in the storage space to provide a signal to the controller; And
And a humidity sensor provided in the storage space and measuring a humidity in the storage space to provide a signal to the controller,
The wall of the refrigerator body includes an environmentally friendly urethane foam panel foamed by nitrogen (N ₂ ) gas,
Wherein the unit cooler includes an ionizer for providing negative ions to the air volume discharged to the storage space by the blowing fan,
Wherein the red-eye detection sensor is formed by a pair of elastic legs in a " U "-shape, an elastic member is interposed between the pair of elastic legs,
Wherein the ventilation means comprises: a gas sensor installed in the storage space and measuring a concentration of the noxious gas to provide a signal to the controller; and a gas sensor provided on the wall of the refrigerator body, And a ventilation fan provided inside the ventilation window and being driven to rotate when the ventilation window is opened to ventilate the inside of the storage space, Wherein the ventilation fan includes an exhaust fan for forcibly exhausting the air inside the refrigerator body to the outside and an inflow fan for allowing the outside air to flow into the refrigerator body,
Wherein the controller controls the temperature and humidity in the storage space to be maintained at a predetermined value that is always set by a sensor signal of the temperature sensor and the humidity sensor.

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