JP6096859B1 - refrigerator - Google Patents

Abstract

A refrigerator capable of preventing condensation while reducing power consumption is provided. In a refrigerator 1, a cabinet pipe 25 and a heater 31 for preventing condensation are disposed on the front side of a casing 3. The cabinet pipe 25 is arranged in a portion on the take-out port side in the housing 3 so as to surround the ice making room 7, the switching room 9, the freezing room 11, and the vegetable room 13. As the heater 31, heaters 31a, 31, and 31c are arranged. The heater 31 a is disposed between the ice making chamber 7 and the switching chamber 9 and the freezing chamber 11. The heater 31 b is disposed between the freezer compartment 11 and the vegetable compartment 13. The heater 31 c is disposed between the ice making chamber 7 and the switching chamber 9. [Selection] Figure 3

Description

  The present invention relates to a refrigerator, and more particularly, to a refrigerator having a function of preventing dew condensation around the entrance and exit of a storage room.

  In the refrigerator, the temperatures in the plurality of storage chambers of the refrigerator are each cooled to a predetermined temperature using a refrigeration cycle. The refrigeration cycle includes a refrigerant circuit in which a compressor, a condenser, etc., a cabinet pipe, a capillary tube, a cooler, and the like are connected to each other by piping.

  The refrigerant in the pipe is first compressed by a compressor to become a high-temperature / high-pressure refrigerant. The high-temperature and high-pressure refrigerant flows through the cabinet pipe through a condenser and the like. While the refrigerant flows, the heat of the refrigerant is dissipated. The radiated refrigerant flows into the capillary tube and is depressurized to become a low temperature / low pressure refrigerant. The low-temperature and low-pressure refrigerant flows into the cooler, and heat exchange is performed between the refrigerant flowing in and the air in the refrigerator storage chamber. The refrigerant subjected to heat exchange flows into the compressor and is compressed again. Hereinafter, the temperature in the refrigerator is maintained at a desired temperature by repeating the cycle.

  Examples of refrigerator storage rooms include a refrigerator room, an ice making room, a switching room, a freezer room, and a vegetable room. The refrigeration room is a storage room that is set to a temperature that does not freeze objects stored in the refrigerator. The ice making room is a storage room for storing ice produced by an ice making machine in the warehouse. The switching chamber is a storage chamber that can switch the temperature zone according to the application. A freezer room is a storage room set to the freezing temperature which freezes the thing accommodated in the store | warehouse | chamber. The vegetable room is a storage room that mainly contains vegetables.

  On the front side of the refrigerator, a double-folding door for the refrigerator compartment is provided. In addition, drawer doors (in / out ports) for the ice making room, the switching room, the freezing room, and the vegetable room are provided. The cabinet pipe of the refrigerant circuit is arranged on the front side of the refrigerator. Since the refrigerant flowing through the cabinet pipe is dissipated, condensation near the entrance / exit of each storage chamber is prevented. Patent Documents 1 and 2 are examples of patent documents disclosing such a refrigerator.

JP 2013-044438 A JP 2004-085102 A

  In the refrigerator, the temperature in the storage room varies depending on the storage room. Since the cabinet pipe is disposed in the housing in the vicinity of the inlet / outlet of the storage chamber, if the heat of the refrigerant is transferred into the storage chamber, it becomes a factor that increases power consumption. In particular, in a freezer having a low temperature, extra power is required to maintain a desired temperature so that the temperature in the freezer does not rise due to heat radiated from a cabinet pipe arranged near the entrance / exit. Will be consumed.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a refrigerator capable of preventing condensation while reducing power consumption.

  The refrigerator according to the present invention includes a housing, a refrigeration cycle, a heater, and a control unit. The housing accommodates a plurality of storage chambers each having a slot. The refrigeration cycle is arranged in a housing and includes a compressor, a condenser, a cabinet pipe, and a cooler, and the refrigerant circulates. The heater is disposed in the housing. The control unit controls the operation of the refrigeration cycle and energization of the heater. The cabinet pipe is disposed on the entrance / exit side of at least some of the plurality of storage chambers in the housing. The heater is disposed on the entrance / exit side of the housing. The cabinet pipe is a part of a plurality of storage chambers, except for a portion on the entrance / exit side in a portion of the housing that accommodates storage chambers other than some of the storage chambers, and a part of the storage in a manner excluding the side portion. It arrange | positions with respect to the whole chamber at the upper part and both sides in the part of the housing | casing which accommodates some storage chambers. The heater is disposed on the inlet / outlet side of the housing portion that houses a part of the storage chambers.

  According to the refrigerator according to the present invention, the cabinet pipe and the heater are arranged on the inlet / outlet side of at least some of the plurality of storage chambers in the housing. That is, the cabinet pipe is a part of the plurality of storage chambers, except for a portion on the entrance / exit side in a portion of the housing that accommodates storage chambers other than some of the storage chambers, and a portion excluding a side portion. It arrange | positions with respect to the whole storage chamber in the upper part and both sides in the part of the housing | casing which accommodates some storage chambers. The heater is disposed on the inlet / outlet side of the housing portion that houses a part of the storage chambers. Thereby, dew condensation around the entrance / exit of the storage room can be prevented while reducing power consumption.

It is a perspective view of the refrigerator which concerns on embodiment. In the embodiment, it is a figure which shows an example of the refrigerant circuit arrange | positioned in the refrigerator. In the embodiment, it is a perspective view which shows an example of arrangement | positioning of the cabinet pipe and a heater in a refrigerator. It is a block diagram which shows a refrigerant circuit, a heater, and a control part. It is a front view which shows arrangement | positioning of the cabinet pipe in the refrigerator which concerns on a comparative example. In the embodiment, it is a graph which shows an example of the electricity supply mode of a heater. In the same embodiment, it is a graph which shows an example of the electricity supply mode of a compressor and a heater. In the same embodiment, it is a graph which shows an example of an energization mode of a heater in case set temperature of a store room is low. In the same embodiment, it is a graph which shows an example of an energization mode of a heater in case set temperature of a store room is low. In the embodiment, it is a perspective view which shows an example of arrangement | positioning of the cabinet pipe and a heater in the refrigerator which concerns on a modification.

  An example of the refrigerator provided with the cabinet pipe according to the embodiment will be described. As shown in FIG. 1, in the refrigerator 1, for example, a refrigerating room 5, an ice making room 7, a switching room 9, a freezing room 11, and a vegetable room 13 are housed in a housing 3 as storage rooms. The refrigerator compartment 5 is arranged in the upper part in the housing 3, and the vegetable compartment 13 is arranged in the lower part in the housing 3. Between the refrigerator compartment 5 and the vegetable compartment 13, an ice making room 7, a switching room 9 and a freezing room 11 are arranged.

  The refrigerator compartment 5 is a storage compartment that is set to a temperature at which an object accommodated in the warehouse does not freeze, and the temperature is set to about 5 ° C., for example. The ice making room 7 is a storage room for storing ice produced by an ice making machine in the warehouse, and the temperature is set to about −18 ° C., for example. The switching chamber 9 is a storage chamber that can switch the temperature zone according to the application, and can be switched to a temperature of about 0 ° C. or about −7 ° C., for example.

  The freezer compartment 11 is a storage compartment that is set to a freezing temperature that freezes an object accommodated in the cabinet, and the temperature is set to, for example, about −18 ° C. The vegetable room 13 is a storage room that mainly contains vegetables, and the temperature is set to about 10 ° C., for example. In addition, the arrangement | positioning relationship and preset temperature of a storage chamber are examples, and are not restricted to these.

  On the front side of the housing 3, doors 6, 8, 10, 12, 14 of the refrigerator compartment 5, the ice making compartment 7, the switching room 9, the freezer compartment 11, and the vegetable compartment 13 are provided. As will be described later, a cabinet pipe 25 and a heater 31 for preventing condensation are arranged on the front side of the housing 3 (see FIG. 3).

  Next, the refrigeration cycle (refrigerant circuit) provided in the refrigerator 1 will be described. As shown in FIG. 2, the refrigerator 1 is mainly provided with a refrigerant circuit 20 in which a compressor 21, a condenser 23, a cabinet pipe 25, a capillary tube 27, and a cooler 29 (evaporator) are connected by piping. Yes.

  The compressor 21 compresses the refrigerant into a high temperature / high pressure refrigerant. The condenser 23 dissipates heat from the high-temperature and high-pressure refrigerant. The condenser 23 in this specification refers to a condenser (not shown) disposed in a machine room below the casing 3, and a condensation pipe (not illustrated) disposed on the back side of the casing 3. including. The cabinet pipe 25 is arrange | positioned at the front side of the refrigerator 1, and prevents that dew adheres near the door (outlet / entrance opening) of a storage chamber. One end side (upstream side) of the cabinet pipe 25 is connected to the condenser 23.

  The capillary tube 27 depressurizes the refrigerant. One end side (upstream side) of the capillary tube 27 is connected to the other end side (downstream side) of the cabinet pipe 25. The cooler 29 cools the storage chamber by exchanging heat between the air in the storage chamber of the refrigerator 1 and the refrigerant. One end side (upstream side) of the cooler 29 is connected to the other end side (downstream side) of the capillary tube 27. The other end side (downstream side) of the cooler 29 is connected to the compressor 21. The refrigerant circuit 20 of the refrigerator 1 is configured as described above.

  Next, the arrangement structure of the cabinet pipe 25 and the heater 31 for preventing condensation will be described.

  As shown in FIG. 3, the cabinet pipe 25 and the heater 31 are arranged on the front surface side (extraction port side) of the housing 3. The cabinet pipe 25 is arranged in a portion on the take-out port side in the housing 3 so as to surround the ice making room 7, the switching room 9, the freezing room 11, and the vegetable room 13. Note that the cabinet pipe 25 is positioned above both sides of the refrigerator compartment 5 (on the right and left sides toward the paper surface) and above the refrigerator compartment 5 in the portion on the outlet side of the housing 3. The part is not arranged.

  The inlet 25a of the cabinet pipe 25 is connected to the condenser 23 (see FIG. 2), and the outlet 25b is connected to the capillary tube 27 (see FIG. 2). The refrigerant flows in the cabinet pipe 25 clockwise toward the paper surface.

  As the heater 31, for example, a heater 31a, a heater 31b, and a heater 31c are arranged. The heater 31 a is disposed in a portion on the take-out side of the housing 3 located between the ice making chamber 7 and the switching chamber 9 and the freezing chamber 11. The heater 31b is disposed in a portion on the take-out side of the housing 3 located between the freezer compartment 11 and the vegetable compartment 13. The heater 31 c is disposed in a portion on the take-out side of the housing 3 located between the ice making chamber 7 and the switching chamber 9.

  As shown in FIG. 4, a series of cooling operations by the refrigerant circuit 20 and the on / off operation of the heater 31 are controlled by the control unit 41. The control part 41 is arrange | positioned at the upper part of the housing | casing 3, for example as a control board. The refrigerator 1 according to the embodiment is configured as described above.

  In the refrigerator 1 described above, the cabinet pipe 25 and the heater 31 can prevent condensation near the entrance and exit of the storage room while suppressing power consumption. This will be described in comparison with a refrigerator according to a comparative example.

  As shown in FIG. 5, in the refrigerator 101 according to the comparative example, a refrigeration room 105, an ice making room 107, a switching room 109, a freezing room 111, and a vegetable room 113 are housed in a housing 103 as storage rooms. On the front side of the housing 103, a cabinet pipe 125 is arranged so as to surround each inlet / outlet of the refrigerator compartment 105, the ice making room 107, the switching room 109, the freezer room 111 and the vegetable room 113 in a one-stroke mode. Yes. The inlet 125a of the cabinet pipe 125 is connected to an evaporator (not shown), and the outlet 125b is connected to a capillary tube (not shown).

  In the refrigerator 101 according to the comparative example, the refrigerant fed into the cabinet pipe 125 from the inlet 125a through the condenser is in the cabinet pipe 125 such as the vegetable room 113, the freezing room 111, the ice making room 107, the refrigerator room 105, and the switching room. 109, the freezer compartment 11 and the vegetable compartment 113 sequentially flow in the vicinity of the entrances and exits and reach the outlet 124b. While the refrigerant flows, the heat of the refrigerant is dissipated, and the heat prevents the condensation around the entrance / exit of each storage chamber.

  However, the temperature in the storage chamber differs depending on the storage chamber. In particular, in storage rooms with low temperatures such as the freezer compartment 111 and the ice making room 107, the temperatures in the freezer room 111 and the ice making room 107 may increase due to heat radiated from the cabinet pipe 125 arranged near the entrance and exit. There is. For this reason, if it is going to hold | maintain the temperature in the store room where temperature is comparatively low to desired temperature, excess electric power will be consumed and power consumption will increase.

  In contrast to the refrigerator according to the comparative example, in the refrigerator according to the embodiment, the cabinet pipe 25 and the heaters 31 (31a, 31b, 31c) are arranged in order to prevent condensation at the entrance and exit of the storage room. The cabinet pipe 25 is arranged in a portion on the front side of the housing 3 so as to surround the ice making room 7, the switching room 9, the freezing room 11, and the vegetable room 13.

  The heaters 31a, 31b, and 31c are all disposed in the vicinity of the entrance / exit of the ice making chamber 7 and the freezing chamber 11 having a relatively low temperature on the front surface side of the housing 3. The heater 31 a is disposed between the ice making chamber 7 and the switching chamber 9 and the freezing chamber 11. The heater 31 b is disposed between the freezer compartment 11 and the vegetable compartment 13. The heater 31 c is disposed between the ice making chamber 7 and the switching chamber 9.

  Thereby, the desired amount of heat for preventing condensation can be applied to the heater 31 according to the set temperature of the storage chamber. As a result, compared with the case where condensation is prevented by the heat uniformly dissipated by the cabinet pipe 125, it is possible to prevent condensation around the entrance / exit while reducing power consumption.

  This will be specifically described. For example, in the heater 31a, the inlet / outlet of the ice making chamber 31 and the like and the inlet / outlet of the freezer compartment 11 having a relatively low set temperature are positioned above and below the heater 31a. On the other hand, in the heater 31b, the entrance / exit of the freezer compartment 11 having a relatively low set temperature is located above the heater 31b, and the entrance / exit of the vegetable compartment 13 having a relatively high set temperature is located below the heater 31b. doing.

  Therefore, as shown in FIG. 6, the time for energizing the heater 31a within a predetermined time is set longer than the time for energizing the heater 31b. As a result, heat can be efficiently generated between the entrance / exit of the ice making chamber 31 and the entrance / exit of the freezer compartment 11 on the front side of the housing 3, and condensation is formed on this portion while suppressing power consumption. Can be suppressed.

  In addition, the cabinet pipe 25 is also cooled when the refrigerator 1 is being cooled. For this reason, as shown in FIG. 7, the controller 41 may energize the heater 31 while the compressor is operating. Thereby, it can suppress efficiently that dew condensation arises near the entrance / exit of a store room, suppressing power consumption.

  In addition, at the outlet of the storage room, condensation is more likely to occur as the set temperature of the storage room is lower. For this reason, the controller 41 may control the time during which the heater 31 is energized depending on the arrangement position of the heater 31. For example, as shown in FIG. 8, for the heaters 31 arranged near the outlets of the storage chamber having a relatively low set temperature, such as the heater 31a and the heater 31c, per unit time (within a predetermined time). By setting a relatively long time to energize the battery, it is possible to efficiently prevent condensation while suppressing power consumption.

  On the other hand, as in the heater 31b, the heater 31 arranged in the vicinity of the inlet / outlet of the storage room having a relatively low set temperature is energized per unit time (within a predetermined time) as shown in FIG. By setting the time relatively short, it is possible to efficiently prevent condensation while suppressing power consumption.

(Modification)
In the refrigerator 1 mentioned above, the case where the cabinet pipe 25 was arrange | positioned under the entrance / exit of the vegetable compartment 13 was mentioned as an example, and was demonstrated. The set temperature of the vegetable compartment 13 is relatively high, and no other storage compartment is arranged below the vegetable compartment 13. For this reason, as shown in FIG. 10, the cabinet pipe 25 is not necessarily arranged.

  In each embodiment, the case where the cabinet pipe 25 and the heater 31 are arranged has been described as an example in order to prevent dew condensation. However, all the heaters are arranged without arranging the cabinet pipe. It may be. In that case, condensation can be prevented more efficiently by controlling the on / off operation of the heater.

  The embodiment disclosed this time is an example, and the present invention is not limited to this. The present invention is defined by the terms of the claims, rather than the scope described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  INDUSTRIAL APPLICATION This invention is effectively utilized for the refrigerator provided with the function which prevents the dew condensation around the entrance / exit of a store room.

1 refrigerator, 3 housings, 5 refrigerator compartment, 6 doors, 7 ice making room, 8 doors, 9 switching room, 10 doors, 11 freezing room, 12 doors, 13 vegetable room, 14 doors, 20 refrigeration circuit, 21 compressor, 23 condenser, 25 cabinet pipe, 25a inlet, 25b outlet, 27 capillary tube, 29 cooler, 31 heater, 41 control unit, 101 refrigerator, 103 housing, 105 refrigerator compartment, 107 ice making room, 109 switching room, 111 freezing Room, 113 vegetable room, 125 cabinet pipe, 125a inlet, 125b outlet.

Claims (5)

A housing for accommodating a plurality of storage chambers each having an access port;
A refrigeration cycle disposed within the housing, including a compressor, a condenser, a cabinet pipe and a cooler, wherein the refrigerant circulates;
A heater disposed in the housing;
A controller that controls the operation of the refrigeration cycle and energization of the heater;
The cabinet pipe is arranged on the outlet side of at least some of the plurality of storage chambers in the housing,
The cabinet pipe is a mode in which a part on the entrance / exit side in a part of the housing that accommodates a storage room other than the part of the storage rooms is excluded and a side part is excluded from a plurality of the storage rooms. , With respect to the whole of the partial storage chambers, arranged at the upper part and both sides of the housing portion that accommodates the partial storage chambers,
The said heater is a refrigerator arrange | positioned at the said entrance / exit side in the part of the said housing | casing which accommodates the said one part storage chamber. The plurality of storage rooms are:
A first storage chamber set at a first temperature;
A second storage chamber set at a second temperature lower than the first temperature,
The heater is
A first heater disposed on the inlet / outlet side of the first storage chamber in the housing;
A second heater disposed on the inlet / outlet side of the second storage chamber in the housing,
And control energization to the first heater by the control unit, wherein different from the control of the energization of the second heater, refrigerator of claim 1 Symbol placement. The first storage chamber is disposed below the second storage chamber;
The second heater is disposed at an upper part of the second storage chamber on the entrance / exit side,
The refrigerator according to claim 2 , wherein the first heater is disposed between the second storage chamber and the first storage chamber at a lower portion of the second storage chamber on the side of the loading / unloading port. The refrigerator according to claim 3 , wherein the control unit makes the energization time per unit time to the second heater longer than the energization time per unit time to the first heater. Wherein the control unit performs energization of the heater while the energization of the compressor is being performed, refrigerator of claim 1 Symbol placement.

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