KR20130070309A - Evaporator and refrigerator having the same - Google Patents

Evaporator and refrigerator having the same Download PDF

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Publication number
KR20130070309A
KR20130070309A KR1020110137561A KR20110137561A KR20130070309A KR 20130070309 A KR20130070309 A KR 20130070309A KR 1020110137561 A KR1020110137561 A KR 1020110137561A KR 20110137561 A KR20110137561 A KR 20110137561A KR 20130070309 A KR20130070309 A KR 20130070309A
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KR
South Korea
Prior art keywords
heater
evaporator
disposed
straight pipe
heat transfer
Prior art date
Application number
KR1020110137561A
Other languages
Korean (ko)
Inventor
조용범
강성희
Original Assignee
엘지전자 주식회사
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Publication date
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Priority to KR1020110137561A priority Critical patent/KR20130070309A/en
Publication of KR20130070309A publication Critical patent/KR20130070309A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F25D19/006—Thermal coupling structure or interface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/02—Refrigerators including a heater

Abstract

The present invention relates to an evaporator and a refrigerator having the same. The evaporator according to the present invention comprises a defrost heater having a refrigerant pipe and disposed up and down, and a defrost heater having a first heater part and a second heater part spaced apart from each other along the vertical direction of the evaporator body. . As a result, the defrosting time can be shortened and the power required during defrosting can be reduced.

Description

Evaporator and refrigerator with same {EVAPORATOR AND REFRIGERATOR HAVING THE SAME}

The present invention relates to an evaporator and a refrigerator having the same, and more particularly, to an evaporator and a refrigerator having the same to shorten the defrost time.

As is well known, a refrigerator is a type of device that allows food to be stored chilled or frozen to keep it fresh.

The refrigerator may include, for example, a refrigerator main body having a cooling chamber formed therein and a refrigeration cycle (apparatus) for providing cold air to the cooling chamber.

The refrigeration cycle comprises a vapor compression refrigeration cycle comprising a compressor for compressing the refrigerant, a condenser that condenses while the refrigerant radiates heat, an expansion device for depressurizing and expanding the refrigerant, and an evaporator for the refrigerant to absorb latent heat of the surroundings and evaporate. Can be.

1 is a perspective view of an evaporator of a conventional refrigerator, and FIG. 2 is a partial cutaway front view of FIG. 1. 1 and 2, an evaporator accommodating part 10 may be provided at one side of the cooling chamber of the refrigerator to accommodate the evaporator 20. The evaporator accommodating part 10 may be formed at, for example, a rear region of the freezing compartment.

In the evaporator accommodating part 10, the air sucked from the freezing compartment and / or the refrigerating compartment may flow into the lower region. The air cooled by heat exchange with the evaporator 20 may be discharged from the upper region of the evaporator accommodating part 10 to the freezing compartment or the refrigerating compartment.

On the other hand, the evaporator 20 may be configured to include a refrigerant pipe 21 and a holder 25 for supporting the refrigerant pipe 21.

As shown in FIG. 2, the refrigerant pipe 21 may include a straight pipe part 22 arranged horizontally and a connecting pipe part 24 connecting the straight pipe part 22 to communicate with each other.

A capillary tube 27 may be connected to one end of the refrigerant tube 21.

The coolant pipe 21 may be provided with heat fins 31. More specifically, the heat transfer fin 31 may be coupled to the straight pipe portion 22. The heat transfer fins 31 may be disposed along the vertical direction.

A defrost heater 41 may be provided at one side of the evaporator 20 to remove frost formed on the evaporator 20 and the evaporator accommodating part 10.

The defrost heater 41 may be provided below the evaporator 20.

Wires 45 may be connected to both ends of the defrost heater 41, respectively.

One side of the holder 25 may be provided with a sensing unit 51 for sensing the temperature and the like.

For example, a wire 55 for transmitting / receiving a control signal may be connected to the sensing unit 51.

The wire 55 of the sensing unit 51 may extend upward, and bind and / or extend upward with the wire 45 of the defrost heater 41.

By such a configuration, when the operation of the refrigerator is started, air in the freezing compartment and / or the refrigerating compartment may be sucked into the lower region of the evaporator accommodating portion 10. The air sucked into the lower side of the evaporator accommodating part 10 may be moved to the lower side of the evaporator 20 to be moved upward while being in contact with the refrigerant pipe 21 and the heat transfer fin 31. The air in contact with the refrigerant pipe 21 and the heat transfer fins 31 may be cooled by heat exchange.

Meanwhile, in the air cooling process, moisture in the air may be in contact with the refrigerant pipe 21 and the heat transfer fin 31 to be implanted on the surfaces of the refrigerant pipe 21 and the heat transfer fin 31.

The air cooled while passing through the evaporator 20 may be provided to the freezer compartment and / or the refrigerating compartment to cool the freezer compartment and the refrigerating compartment in accordance with a set temperature condition.

However, in such a conventional refrigerator, the defrost heater 41 is provided only on the lower side of the evaporator 20, and the distance is far from the heat of the defrost heater 41 to reach the upper space of the evaporator 20. It may take a relatively long time for the entire defrost of the evaporator 20 and the evaporator accommodating portion 10.

In addition, since the defrost time is relatively long, the operating time of the defrost heater 41 is increased, thereby increasing power consumption.

In addition, since the defrosting time is relatively long, the temperature of the evaporator 20 installation region, for example, the freezer compartment, may be increased relatively after the completion of the defrosting. Due to this, not only the cooling of the freezing chamber takes a lot of time, but also the freshness of the food stored in the freezing compartment may be reduced due to the adverse effect of the elevated temperature.

In addition, the operating time of the refrigeration cycle apparatus is increased and power consumption may be increased.

In addition, the operation time of the defrost heater 41 may be increased, thereby increasing the temperature of the defrost heater 41, thereby facilitating forced deterioration of the defrost heater 41, thereby shortening the life of the defrost heater 41. Can be.

Accordingly, an object of the present invention is to provide an evaporator capable of shortening the defrosting time and a refrigerator having the same.

In addition, another object of the present invention is to provide an evaporator and a refrigerator having the same, which can prevent overheating and extend life.

The present invention, in order to achieve the above object, the evaporator body having a refrigerant pipe and disposed up and down; And a defrost heater having a first heater part and a second heater part spaced apart from each other along the vertical direction of the evaporator body.

Here, the first heater portion may be disposed below the evaporator body, and the second heater portion may be arranged above the first heater portion.

The second heater part may be configured to be bent and extended horizontally upward from one end of the first heater part and arranged horizontally.

The evaporator main body includes a refrigerant pipe having a straight pipe portion arranged horizontally, a plurality of heat transfer fins coupled to the straight pipe portion to be disposed along the vertical direction, and holders disposed on both sides of the straight pipe portion, respectively, The heating fins may be configured to be disposed above and below the second heater unit, respectively.

The first heater portion and the second heater portion may be configured to be provided inside the holder.

On the other hand, according to another field of the present invention, the evaporator body having a refrigerant pipe and disposed up and down; A first heater disposed below the evaporator body; And a second heater spaced apart from the upper side of the first heater along a vertical direction of the evaporator body.

The evaporator may further include a cable connecting the first heater and the second heater to each other in series.

The evaporator body may include a refrigerant pipe having a straight pipe portion disposed horizontally, a plurality of heat transfer fins coupled to the straight pipe portion to be disposed along the vertical direction, and holders disposed at both sides of the straight pipe portion. Can be.

The second heater may be configured to be coupled through the heat transfer fin.

The heat transfer fins may be configured to be provided above and below the second heater, respectively.

The second heater may be configured such that a portion of the heating section is disposed outside the holder.

On the other hand, according to another field of the present invention, a refrigerator body in which a cooling chamber is formed; A door for opening and closing the cooling chamber; And the evaporator disposed at one side of the cooling chamber.

As described above, according to an embodiment of the present invention, the defrost heater is configured to be spaced apart from each other along the vertical direction of the evaporator, it is possible to shorten the distance to reach or transfer the heat of the defrost heater to reduce the defrost time It can be shortened.

In addition, the operation time of the defrost heater is shortened by shortening the distance that the heat of the defrost heater is transferred, thereby reducing the power consumption required during defrosting.

In addition, since the defrost time is shortened, the temperature rise in the vicinity of the evaporator installation region, for example, the freezer compartment, can be suppressed after the completion of the defrost.

In addition, the defrosting time can be shortened and the temperature rise of the freezer compartment can be suppressed after the completion of the defrosting, so that the adverse effect (for example, the freshness decrease) caused by the temperature rise of the food in the freezer compartment can be reduced.

In addition, the defrosting time can be shortened and the temperature rise of the freezer compartment can be suppressed after the completion of the defrosting, thereby reducing the operation time of the freezing cycle apparatus for recovering the temperature of the freezer compartment. Thereby, the power consumption resulting from the operation of a refrigeration cycle apparatus can be reduced.

In addition, it is possible to shorten the operation time of the defrost heater at overheating or high temperature, thereby extending the life of the defrost heater.

1 is a perspective view of an evaporator of a conventional refrigerator,
2 is a partial cutaway front view of FIG. 1;
3 is a perspective view of a refrigerator provided with an evaporator according to one embodiment of the present invention;
4 is a perspective view of an evaporator region of the refrigerator of FIG. 3, FIG.
5 is a partial cutaway front view of FIG. 4;
6 is a cross-sectional view taken along the line VI-VI in Fig. 5,
7 is a perspective view of the defrost heater of FIG.
8 is a front view of an evaporator according to another embodiment of the present invention;
9 is a cross-sectional view taken along the line VII-VII of FIG. 8;
10 is a view showing an arrangement of the defrost heater of FIG.
11 is a front view of an evaporator according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 3, the refrigerator including an evaporator according to an embodiment of the present disclosure may open and close the refrigerator main body 110 and the cooling chamber 120 in which a cooling chamber 120 is formed. The door 130 and the cooling chamber 120 may be provided with an evaporator 150 disposed on one side. Here, the cooling chamber 120 refers to a storage space for cooling and storing food, and the cooling chamber 120 may include a freezing chamber 121 and a refrigerating chamber 122. The refrigerator body 110 may be configured to include any one of the freezing chamber 121 and the refrigerating chamber 122. Hereinafter, the refrigerator main body 110 will be described with an example in which the freezing chamber 121 and the refrigerating chamber 122 are provided.

The cooling chamber 120 may be formed inside the refrigerator main body 110.

The cooling chamber 120 may include a freezing chamber 121 and a refrigerating chamber 122.

The freezing chamber 121 and the refrigerating chamber 122 may be disposed along the left and right directions.

The refrigerator main body 110 may include a door 130 that opens and closes the cooling chamber 120.

The door 130 may include a freezing compartment door 131 for opening and closing the freezing compartment 121 and a refrigerating compartment door 132 for opening and closing the refrigerating compartment 122.

The refrigerator main body 110 may be provided with a refrigeration cycle device (not shown) to provide cold air to the cooling chamber 120. The refrigeration cycle apparatus may be used, for example, a vapor compression refrigeration cycle apparatus for compressing, condensing, expanding and evaporating a refrigerant.

A machine room (not shown) in which a compressor, a condenser, and the like are installed in the refrigeration cycle apparatus may be provided in a rear region of the refrigerator main body 110.

On the other hand, one side of the freezing chamber 121 may be provided with an evaporator 150. Here, the evaporator 150 may be provided in the freezing chamber 121 and the refrigerating chamber 122, respectively. Hereinafter, the case where the evaporator 150 is provided on one side of the freezing chamber 121 will be described by way of example.

More specifically, the evaporator accommodating part 140 in which the evaporator 150 is installed or accommodated may be provided in the rear region of the freezing chamber 121.

The evaporator accommodating part 140 may be, for example, recessed into a rear region of the freezing compartment 121.

The evaporator accommodating part 140 may be configured such that the evaporator 150 is installed upright, and the air of the cooling chamber 120 flows into the lower side of the evaporator 150 and flows out from the upper side.

As shown in FIGS. 4 and 5, the evaporator 150 is provided with a refrigerant pipe 152 and spaced apart from each other along an up and down direction of the evaporator body 151. It may be configured to include a defrost heater 170 having a first heater portion 172a and a second heater portion 172b disposed.

The evaporator main body 151 may include, for example, a refrigerant pipe 152 having a straight pipe portion 153a disposed horizontally, and a plurality of heat transfer fins coupled to the straight pipe portion 153a to be disposed along the vertical direction. 161 and holders 155 disposed on both sides of the straight pipe portion 153a, respectively.

The refrigerant pipe 152 may further include a connection pipe part 153b for connecting two straight pipe portions 153a adjacent to each other to communicate with each other.

The straight pipe portion 153a may be spaced apart from each other in the vertical direction.

Holders 155 may be provided at both sides of the straight pipe portion 153a.

More specifically, the holder 155 may be formed through the insertion hole 156 so that the straight pipe portion 153a can be inserted.

The straight pipe portion 153a may be configured in two rows, for example, in the front-rear direction (or thickness direction).

The connecting pipe part 153b may be disposed on the outside of the holder 155 to connect the two straight pipe parts 153a to communicate with each other.

For example, the connecting pipe part 153b may connect two straight pipe parts 153a adjacent to each other along the vertical direction.

The connection pipe part 153b connects all of the straight pipe parts 153a so that the refrigerant pipe 152 may have a refrigerant flowing into one side and a refrigerant flowing out of the other side. Both ends of the refrigerant pipe 152 may be disposed on both sides of the evaporator body 151.

One end of the refrigerant pipe 152 may be connected to the capillary tube 157, the other end may be connected to a compressor (not shown).

The heat pipe fin 161 may be provided at the straight pipe portion 153a. Thereby, the heat exchange area of the refrigerant and air can be increased.

On the other hand, the evaporator body 151 may be provided with a defrost heater 170 for removing frost.

The defrost heater 170 may be configured to include a first heater 172a and a second heater 172b which are spaced apart from each other along the vertical direction of the evaporator body 151.

For example, the first heater unit 172a may be disposed below the evaporator body 151.

One end of the first heater 172a may be supported by any one of the holders 155, and the other end may be bent and disposed below the evaporator body 151.

For example, the first heater 172a may be configured to include two heating sections 173a and 173b spaced apart from each other.

The second heater part 172b may be disposed above the first heater part 172a to be spaced a predetermined distance apart.

For example, the first heater 172a and the second heater 172b may be configured to be disposed inside the holder 155.

More specifically, the second heater 172b may be configured to be connected to the first heater 172a.

The defrost heater 170 is a connecting portion connecting the first heater portion 172a and the second heater portion 172b which are spaced up and down, and the first heater portion 172a and the second heater portion 172b. 172c may be provided.

As shown in FIG. 7, the second heater part 172b may be configured to be bent and horizontally extended after being extended upward from an end of the first heater part 172a by a predetermined distance. Here, the second heater unit 172b may be configured to be disposed, for example, in a 40% to 60% section of the height of the evaporator body 151.

The second heater 172b may be configured to include, for example, two heating sections 174a and 174b horizontally spaced apart. In the present exemplary embodiment, the first heater 172a and the second heater 172b each have two heating sections, but the number of the heating sections of each of the heater sections 172a and 172b is illustrated. And the heat generating capacity can be adjusted appropriately.

On the other hand, the heat transfer fin 161 of the evaporator body 151, as shown in Figure 6, the first heat transfer fin 162 and the lower disposed on the upper side of the second heater portion 172b It may be configured to include two heating pins (163). Here, the defrost heater 170 may be provided with a pipe-like member (171a) to form an appearance, and a heating wire (171b) disposed inside the tubular member (171a). An insulation member 171c may be provided around the heating wire 171b to insulate and support the heating wire 171b.

The first heating fin 162 and the second heating fin 163 may be configured to have different pitches P1 and P2. For example, the pitch P1 of the first heating fin 162 may be smaller than the pitch P2 of the second heating fin 163. According to this, the air flow path due to the conception of the evaporator body 151 can be prevented from clogging and the heat exchange efficiency of the upper region can be improved.

Coupling holes 164 may be formed through the first heating fins 162 and the second heating fins 163 so that the straight pipe portions 153a may be inserted, respectively.

Meanwhile, a sensing unit 181 may be provided at one side of the holder 155. The detector 181 may be configured to detect a temperature.

A wire 185 may be connected to the sensing unit 181 to transmit and receive an electrical signal.

Wires 175 and 176 may be connected to one end of the first heater 172a and one end of the second heater 172b, respectively.

The wires 175 and 176 of the defrost heater 170 and the wires 185 of the sensing unit 181 may be bound together and extended upward.

By such a configuration, when a cooling operation for providing cold air to the cooling chamber 120 is started, the cooling chamber 120 (the freezing chamber 121 and / or the refrigerating chamber) 122) may be inhaled.

The sucked air may be contacted with the evaporator 150 while being moved upward to exchange heat and cool. At this time, moisture in the air may be implanted on the surface of the evaporator 150.

The air, ie, cold air, moved upwardly while exchanging heat with the evaporator 150 may be blown into the cooling chamber 120 to cool the cooling chamber 120.

On the other hand, when a predetermined time elapses, a defrosting operation for removing the frost formed on the surface of the evaporator 150 may be performed. When defrosting operation is started, power may be applied to the defrost heater 170.

The defrost heater 170 according to the present embodiment includes a first heater 172a and a second heater 172b spaced up and down so that the heat generated from the defrost heater 170 is the maximum of the defrost area. Since the reach to the outside is reduced, the defrosting time can be significantly shortened. Thereby, the power consumption consumed in the defrost can be reduced. In addition, the temperature rise of the defrost heater 170 around the installation (in this embodiment, the freezing compartment 121) can be suppressed. In addition, since the heat generation time of the defrost heater 170 is relatively small, the operating time at a high temperature of the defrost heater 170 may be shortened. As a result, forced deterioration of the defrost heater 170 due to the extension of the operating time at the high temperature of the defrost heater 170 can be suppressed, so that the service life of the defrost heater 170 can be extended.

Hereinafter, another embodiment of the present invention will be described with reference to FIGS. 8 to 11. The same and equivalent parts as those described above and shown in the drawings may be described by omitting the same reference numerals for convenience of description. In addition, duplicate descriptions of some components may be omitted.

As shown in FIG. 8, the evaporator 190 according to another embodiment of the present invention includes an evaporator body 151 having a refrigerant pipe 152 and disposed up and down, and below the evaporator body 151. The first heater 210 may be disposed, and the second heater 220 may be spaced apart from the upper side of the first heater 210 along the vertical direction of the evaporator body 151.

The evaporator body 151 may include a coolant tube 152 and a holder 155 disposed on both sides of the coolant tube 152 to support the coolant tube 152.

The refrigerant pipe 152 may include a straight pipe portion 153a disposed along the horizontal direction and a connecting pipe portion 153b for connecting the straight pipe portion 153a to communicate with each other.

The straight pipe portions 153a may be coupled to the holders 155, respectively.

Two vertical pipe portions 153a vertically adjacent to each other may be connected to each other by the connecting tube portion 153b.

The evaporator body 151 may include a heat transfer fin 161 coupled to the refrigerant pipe 152.

The heat transfer fin 161 may be coupled to the refrigerant pipe 152 at a predetermined pitch with a long length up and down.

Each of the heat transfer fins 161 may be coupled to each other by passing through the straight pipe portion 153a.

Coupling holes 164 may be formed through the heat transfer fins 161 to allow the straight pipe portions 153a to be inserted therethrough.

Meanwhile, a first heater 210 may be disposed below the evaporator body 151.

Both ends of the first heater 210 may be inserted into holders 155 on one side, respectively.

As shown in FIGS. 8 and 10, the first heater 210 may be configured to include heating sections 212a and 212b spaced apart from each other.

At least one region of the first heater 210 may be disposed outside the holder 155, for example.

More specifically, the first heater 210 may be configured to include a holder outer heating section 212c disposed on the outside of the holder 155, respectively. Thereby, the connection pipe part 153b of the outer side of the holder 155 and / or the periphery can be quickly removed.

The second heater 220 may be disposed to be spaced a predetermined distance above the first heater 210.

Here, the second heater 220 may be configured to be disposed over a 40% to 60% section of the overall height of the evaporator body 151.

The second heater 220 may be provided with a heating section (222a, 222b) arranged horizontally to each other.

The second heater 220 may be coupled to penetrate through the heat transfer fins 161.

The second heater insertion holes 165 may be formed through the heat transfer fins 161 so that the second heaters 220 can be inserted therethrough.

At least one region of the second heater 220 may be disposed outside the holder 155.

More specifically, the second heater 220 may be configured to include a holder outer heating section 222c disposed on the outside of the holder 155, respectively. As a result, frost in the connection pipe portion 153b may be easily removed.

In the present exemplary embodiment, the first heater 210 and the second heater 220 are illustrated to have two heating sections, respectively. However, the number and heating capacity of the heating sections of the heaters 210 and 220 may be properly adjusted. Can be.

The first heater 210 and the second heater 220 may be configured to be connected in parallel to each other to a power source.

On the other hand, the first heater 210 and the second heater 220 may be configured to be connected in series with each other.

More specifically, as shown in FIG. 11, the evaporator 230 includes an evaporator body 151 and a first heater 210 and a second heater 220 spaced apart from each other in the vertical direction of the evaporator body 151. ) And a connection wire or cable 240 for electrically connecting one end of the first heater 210 and one end of the second heater 220.

In this configuration, when the defrosting operation is started, power may be applied to the first heater 210 and the second heater 220. The evaporator 190 of the present embodiment is configured to include a first heater 210 and a second heater 220 to be spaced apart from each other along the up and down direction of the evaporator body 151 of the evaporator body 151. Since the heat is simultaneously generated in the lower and center regions, the distance to the outermost portion of the defrost area (object) of heat generated from the first heater 210 and the second heater 220 may be shortened, thereby significantly reducing the total defrost time. . As a result, power consumption required for defrosting can be reduced.

In addition, since the at least one region of the first heater 210 and the second heater 220 of the present embodiment is disposed outside the holder 155, frost on the outside of the holder 155 may be quickly removed. As a result, the overall defrosting time can be shortened.

The foregoing has been shown and described with respect to specific embodiments of the invention. However, the present invention may be embodied in various forms without departing from the spirit or essential characteristics thereof, so that the above-described embodiments should not be limited by the details of the detailed description.

Further, even when the embodiments not listed in the detailed description have been described, it should be interpreted broadly within the scope of the technical idea defined in the appended claims. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

110: refrigerator body 120: cooling chamber
121: Freezer 122: Refrigerator
130: door 131: freezer door
132: refrigerating chamber door 140: evaporator accommodating part
150: evaporator 151: evaporator body
152: refrigerant pipe 153a: straight pipe portion
153b: connector 155: holder
161: heating fin 162: first heating fin
163: second heating fin 170: defrost heater
171a: tubular member 171b: hot wire
171c: insulation member 172a: first heater portion
172b: second heater portion 172c: connection portion
175, 176: wire

Claims (12)

An evaporator body having a refrigerant pipe and disposed up and down; And
A defrost heater having a first heater part and a second heater part spaced apart from each other along the vertical direction of the evaporator body;
Evaporator comprising a. The method of claim 1,
And the first heater part is disposed below the evaporator body, and the second heater part is disposed above the first heater part. The method of claim 2,
The second heater unit is evaporator, characterized in that bent and extended horizontally extending from one end of the first heater portion is arranged horizontally. The method of claim 3,
The evaporator body includes a refrigerant pipe having a straight pipe portion disposed horizontally, a plurality of heat transfer fins coupled to the straight pipe portion to be disposed along the vertical direction, and holders disposed on both sides of the straight pipe portion,
The heat transfer fin is an evaporator, characterized in that disposed on the upper side and the lower side of the second heater. 5. The method of claim 4,
The first heater portion and the second heater portion is characterized in that provided on the inside of the holder An evaporator body having a refrigerant pipe and disposed up and down;
A first heater disposed below the evaporator body; And
And a second heater spaced apart from the upper side of the first heater in a vertical direction of the evaporator body. The method according to claim 6,
Evaporator further comprises a cable for connecting the first heater and the second heater in series with each other. 8. The method according to claim 6 or 7,
The evaporator main body includes a refrigerant pipe having a straight pipe portion disposed horizontally, a plurality of heat transfer fins coupled to the straight pipe portion to be disposed along the vertical direction, and holders disposed on both sides of the straight pipe portion, respectively. Evaporator made. 9. The method of claim 8,
The second heater is evaporator, characterized in that coupled through the heat transfer fin. 9. The method of claim 8,
The heat transfer fin is provided on the upper side and the lower side of the second heater, respectively. 9. The method of claim 8,
The second heater is an evaporator, characterized in that a portion of the heating section is disposed outside the holder. A refrigerator body having a cooling chamber formed therein;
A door for opening and closing the cooling chamber; And
The evaporator of claim 1 or 6 disposed on one side of the cooling chamber;
.
KR1020110137561A 2011-12-19 2011-12-19 Evaporator and refrigerator having the same KR20130070309A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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WO2016064200A3 (en) * 2014-10-21 2016-06-16 Lg Electronics Inc. Defrosting device and refrigerator having the same
CN106662385A (en) * 2014-10-21 2017-05-10 Lg 电子株式会社 Defrosting device and refrigerator having the same
EP3267132A1 (en) 2016-07-08 2018-01-10 LG Electronics Inc. Refrigerator
CN108344206A (en) * 2018-01-23 2018-07-31 合肥美的电冰箱有限公司 Evaporator assemblies and refrigerator
KR20180118877A (en) * 2017-04-24 2018-11-01 엘지전자 주식회사 Rrigerator
CN111765705A (en) * 2020-06-28 2020-10-13 珠海格力电器股份有限公司 Evaporator and heater assembling structure and refrigerator

Cited By (13)

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CN106662385B (en) * 2014-10-21 2019-05-03 Lg 电子株式会社 Defroster and refrigerator with the defroster
CN106662385A (en) * 2014-10-21 2017-05-10 Lg 电子株式会社 Defrosting device and refrigerator having the same
US11079148B2 (en) 2014-10-21 2021-08-03 Lg Electronics Inc. Defrosting device and refrigerator having the same
WO2016064200A3 (en) * 2014-10-21 2016-06-16 Lg Electronics Inc. Defrosting device and refrigerator having the same
US10386102B2 (en) 2014-10-21 2019-08-20 Lg Electronics Inc. Defrosting device and refrigerator having the same
US10415871B2 (en) 2016-07-08 2019-09-17 Lg Electronics Inc. Evaporator drip pan having a heat absorbing coated inner surface
KR20180006570A (en) 2016-07-08 2018-01-18 엘지전자 주식회사 Evaporating unit and refrigerator having the same
US20180010843A1 (en) * 2016-07-08 2018-01-11 Lg Electronics Inc. Evaporator and refrigerator having the same
EP3267132A1 (en) 2016-07-08 2018-01-10 LG Electronics Inc. Refrigerator
KR20180118877A (en) * 2017-04-24 2018-11-01 엘지전자 주식회사 Rrigerator
CN108344206A (en) * 2018-01-23 2018-07-31 合肥美的电冰箱有限公司 Evaporator assemblies and refrigerator
CN108344206B (en) * 2018-01-23 2020-07-03 合肥美的电冰箱有限公司 Evaporator assembly and refrigerator
CN111765705A (en) * 2020-06-28 2020-10-13 珠海格力电器股份有限公司 Evaporator and heater assembling structure and refrigerator

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