JP2014059099A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator which increases the heat radiation amount of a condenser and improves the cooling capacity.SOLUTION: A refrigerator includes: a heat insulation box which is filled with a foam heat insulation material and forms a storage room; a door which opens and closes a front surface of the storage room; a machine room 6 in which a compressor 31 for operating a refrigeration cycle is disposed; a cooler which is disposed in a low temperature part of the refrigeration cycle and generates cooling air; an evaporation dish 16 which is disposed in the machine room 6 and recovers defrosting water of the cooler; a condenser 39 which is disposed in a high temperature part of the refrigeration cycle and is immersed in the defrosting water of the evaporation dish 16; and a water supply path which supplies water to the evaporation dish 16 from a water supply port provided at the heat insulation box.

Description

  The present invention relates to a refrigerator provided with an evaporating dish for collecting defrosted water in a machine room.

  A conventional refrigerator is disclosed in Patent Document 1. This refrigerator includes a main body part in which a plurality of storage chambers are formed by a heat insulating box filled with a heat insulating material. The front of each storage room is opened and closed by a heat insulating door.

  A cool air passage through which cool air flows is provided behind the storage chamber, and a cooler that forms a low temperature part of the refrigeration cycle is disposed in the cool air passage. The cool air generated by heat exchange with the cooler is sent to the storage room, and the storage room is cooled.

  A machine room disposed below the heat insulating box is provided in the lower rear portion of the main body. A compressor, a condenser, and an evaporating dish are provided in the machine room. The compressor is arranged on the left side when viewed from the back, and operates the refrigeration cycle by circulating the refrigerant.

  The condenser is installed on the right side when viewed from the back, and is disposed in the high temperature part of the refrigeration cycle. The evaporating dish is arranged below the condenser and collects defrost water from the cooler. The defrost water in the evaporating dish is heated by the heat generated by the condenser in the machine room and collected in the atmosphere.

JP 2009-79778 A

  However, according to the conventional refrigerator, when the defrost water is not stored in the evaporating dish, the condenser cannot use the latent heat of the defrost water. For this reason, there existed a problem that the heat dissipation of a condenser was inadequate.

  An object of this invention is to provide the refrigerator which can enlarge the thermal radiation amount of a condenser and can improve a cooling capability.

  In order to achieve the above object, a refrigerator according to the present invention includes a heat insulating box that is filled with foam heat insulating material to form a storage room, a door that opens and closes the front of the storage room, and a compressor that operates a refrigeration cycle. In the low temperature part of the refrigeration cycle, a cooler that generates cold air, an evaporating dish that is arranged in the mechanical room and collects defrost water of the cooler, and a high temperature part of the refrigeration cycle And a condenser that is immersed in defrosted water in the evaporating dish, and a water supply path that supplies water to the evaporating dish from a water supply port provided in the heat insulating box.

  Moreover, the present invention is characterized in that, in the refrigerator configured as described above, the water supply port is exposed when the door is opened.

  Moreover, this invention has a recessed part which notched the peripheral part of the said door in the refrigerator of the said structure, and while the said water supply opening is provided in the front surface of the said heat insulation box body, it supplies water to the said water supply opening via the said recessed part It is characterized by being.

  In the refrigerator having the above-described configuration, the water supply port is provided on an outer surface of a side wall of the heat insulating box.

  Further, the present invention, in the refrigerator having the above configuration, includes a notification unit that performs notification by voice or display, and a sensor that detects the amount of water stored in the evaporating dish, and when the amount of water stored in the evaporating dish is equal to or less than a predetermined amount, The notification is performed by the notification unit.

  Moreover, the present invention is characterized in that in the refrigerator configured as described above, the condenser is disposed in contact with the inner bottom surface of the evaporating dish.

  In the refrigerator having the above-described configuration, the defrosted water of the cooler or the water from the water supply port is guided onto the condenser and is collected in the evaporating dish through the condenser. And

  According to the present invention, since the water supply path for supplying water to the evaporating dish from the water supply opening provided in the heat insulating box is provided, water is supplied from the water supply opening to the evaporating dish even before defrosting of the cooler, and the latent heat of water in the evaporating dish is used. The condenser can dissipate heat. Thereby, the heat dissipation of a condenser can be enlarged and the cooling capacity of a refrigerator can be improved.

Side surface sectional drawing which shows the refrigerator of 1st Embodiment of this invention. The cycle figure which shows the refrigerating cycle of the refrigerator of 1st Embodiment of this invention. The perspective view which shows the machine room of the refrigerator of 1st Embodiment of this invention. The front view which shows the refrigerator of 2nd Embodiment of this invention. The perspective view which shows the refrigerator of 3rd Embodiment of this invention.

(First embodiment)
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view showing the refrigerator 1 of the first embodiment. The refrigerator 1 includes a main body 2 having a heat insulating box 3 filled with a heat insulating material. A refrigeration room 4 for storing stored items in a refrigerator is provided above the main body 2, and a freezer room 5 for storing stored items in a frozen state is provided below the refrigerator compartment 4.

  A water supply port 17 is provided at the front of the bottom surface 4 c of the refrigerator compartment 4. The water supply port 17 is connected to a water supply path 18 provided in the heat insulating box 2. The water supply path 18 extends rearward from the front portion of the heat insulating wall 19 below the refrigerating chamber 4 and bends downward. The evaporating dish 16 of the machine room 6 is passed through the heat insulating wall 20 behind the freezing chamber 5 (see FIG. 3). Is formed to extend to the vicinity.

  The front surfaces of the refrigerator compartment 4 and the freezer compartment 5 are opened and closed by doors 4a and 5a filled with foam heat insulating materials, respectively. For this reason, the water supply port 17 is exposed when the door 4a is opened. A notification unit 21 is provided on the front surface of the door 4a. The notification unit 21 notifies the operation state of the refrigerator 1 by display. You may alert | report the operation state of the refrigerator 1 with an audio | voice.

  A machine room 6 disposed below the heat insulating box 3 is provided in the lower rear portion of the main body 2. A compressor 31 for operating the refrigeration cycle is disposed in the machine room 6.

  A cool air passage 7 through which cool air flows is provided behind the freezer compartment 5. The cool air passage 7 has a discharge port 7 a and a return port 7 b that face the freezer compartment 5. The cool air passage 7 is provided with a cooler 35 serving as a low temperature part of the refrigeration cycle.

  A blower fan 9 is disposed above the cooler 35, and a defrost heater 37 that defrosts the cooler 35 is disposed below the cooler 35. A drain pan 25 and a drain pipe 38 are provided below the defrost heater 37.

  A cold air passage 8 communicating with the cold air passage 7 via a damper (not shown) is provided behind the refrigerator compartment 4. A discharge port 8 a facing the inside of the refrigerator compartment 4 is opened in the cold air passage 8. In addition, a communication path (not shown) is provided that allows the refrigerator compartment 4 to communicate with the upstream side of the cooler 35 of the cool air path 7.

  The drain pan 25 receives the defrost water from the cooler 35. The upstream of the drain pipe 38 is connected to the drain pan 25, and the downstream is connected to the machine room 6. The drain pipe 38 guides the defrosted water collected in the drain tray 25 to the evaporation tray 16 (see FIG. 3) arranged in the machine chamber 6.

  FIG. 2 is a cycle diagram showing the refrigeration cycle of the refrigerator 1. The refrigeration cycle is operated by circulating the refrigerant in the direction of arrow A in the refrigerant pipe 36 by driving the compressor 31. A first condenser 39 and a second condenser 40 are sequentially connected to the refrigerant outflow side of the compressor 31. As will be described later, the first condenser 39 is disposed in the machine room 6, and the second condenser 40 is disposed on the side surface and the back surface of the heat insulating box 3.

  A dryer 33 is arranged on the refrigerant outflow side of the second condenser 40, and the refrigerant outflow side of the dryer 33 branches into a first path 44 and a second path 45 via a switching valve 34. A heat pipe 41 and a capillary tube 42 are arranged in order on the first path 44, and a capillary tube 43 is arranged on the second path 45.

  The heat pipe 41 is provided on the peripheral surface of the opening 4 b of the refrigerator compartment 4 and the peripheral surface of the opening 5 b of the freezer compartment 5, and the heat pipe 41 prevents the occurrence of condensation. A cooler 35 is connected to the subsequent stage of the confluence of the first and second paths 44 and 45, and the refrigerant outflow side of the cooler 35 is connected to the compressor 31.

  The high-temperature and high-pressure refrigerant compressed by the compressor 31 is condensed while dissipating heat in the first condenser 39 by forced convection by a blower fan 32 (see FIG. 3) described later. The refrigerant flowing out of the first condenser 39 is condensed while radiating heat in the second condenser 40 by natural convection.

  Moisture is removed from the high-temperature refrigerant flowing out of the second condenser 40 by the dryer 33. Thereafter, the refrigerant flows through the first path 44 or the second path 45 by switching the switching valve 34. The refrigerant flowing through the first path 44 passes through the heat pipe 41 and prevents condensation around the openings 4b and 5b. The refrigerant flowing out of the heat pipe 41 expands in the capillary tube 42 and becomes a low pressure. Further, the refrigerant flowing through the second path 45 expands in the capillary tube 43 and becomes a low pressure.

  The low-pressure refrigerant that has flowed out of the capillary tube 42 or the capillary tube 43 flows into the cooler 35 and evaporates while absorbing heat from the air flowing through the cold air passage 7 to become a low-temperature gas refrigerant. Then, the low-temperature gas refrigerant returns to the compressor 31, and the refrigerant circulates to operate the refrigeration cycle.

  Cold air generated by heat exchange between the air flowing through the cold air passage 7 and the cooler 35 by driving the compressor 31 and the blower fan 9 is discharged from the discharge port 7 a to the freezer compartment 5. The cold air discharged from the discharge port 7a flows through the freezer compartment 5 and returns to the cooler 35 via the return port 7b. Thereby, cooling in the freezer compartment 5 is performed.

  When a damper (not shown) is opened, cold air flows from the cold air passage 7 into the cold air passage 8, and is discharged from the discharge port 8a to the refrigerator compartment 4. The cold air discharged from the discharge port 8a flows through the refrigerator compartment 4 and returns to the cooler 35 through a communication path (not shown). Thereby, the inside of the refrigerator compartment 4 is cooled.

  FIG. 3 shows a perspective view of the machine room 6 as seen from the back. A grill 10 having a plurality of ventilation holes (not shown) is provided on both side walls 6 a of the machine room 6. In the machine room 6, a compressor 31, a first condenser 39, a blower fan 32, a switching valve 34 and a dryer 33 are arranged in order from the left when viewed from the back.

  The evaporating dish 16 is disposed below the first condenser 39 and the blower fan 32. The evaporating dish 16 has a capacity of about 3 L and is fixed to the bottom surface of the machine room 6. A sensor 48 that detects the amount of water stored in the evaporating dish 16 is provided in the evaporating dish 16.

  The first condenser 39 includes a water cooling unit 39a and an air cooling unit 39b. The water cooling part 39 a is a part where a refrigerant pipe 36 extending meandering from the compressor 31 is disposed in contact with the inner bottom surface 16 a of the evaporating dish 16.

  The air cooling part 39b is arranged downstream of the water cooling part 39a and facing the blower fan 32. The air cooling part 39 b is formed by fixing a large number of fins 39 c to the refrigerant pipe 36. The fins 39c each having a substantially rectangular shape are horizontally arranged. The lower end 39d of the air cooling unit 39b is disposed in contact with the inner bottom surface 16a of the evaporating dish 16. The fin 39c at the lower end is close to the inner bottom surface 16a, and the fin 39c at the upper end is close to the lower end of the drain pipe 38 (see FIG. 1).

  The defrosting operation of the cooler 35 is performed by driving the defrost heater 37, and the cooler 35 is heated. The defrost water generated by the defrosting operation is guided onto the fins 39c of the air cooling unit 39b through the drain pipe 38, and is collected in the evaporating dish 16 through the fins 39c. Since the lower end 39d of the air cooling unit 39b and the water cooling unit 39a are in contact with the inner bottom surface 16a of the evaporating dish 16, they are immersed in defrosted water collected in the evaporating dish 16. Moreover, the fin 39c may also be immersed with defrost water.

  When the blower fan 32 is driven, outside air is sucked into the machine room 6 through the ventilation hole of the grill 10 disposed on one side of the machine room 6. The air flowing into the machine room 6 cools the air cooling unit 39b and the compressor 31 of the first condenser 39 to dissipate heat. The air that has cooled the first condenser 39 and the compressor 31 is exhausted through the vent hole of the other grill 10.

  The water in the evaporating dish 16 is evaporated by the heat in the machine chamber 6 by the heat source of the compressor 31 and the first condenser 39 and collected in the atmosphere. At this time, the water cooling unit 39a and the air cooling unit 39b of the first condenser 39 dissipate heat by latent heat due to evaporation of the defrost water. Thereby, the heat radiation amount of the first condenser 39 can be increased.

  Further, when the amount of water stored in the evaporating dish 16 is equal to or less than a predetermined amount based on the detection result of the sensor 48, the notification unit 21 notifies the user that a predetermined amount of water is urged by voice or display. When the user supplies a predetermined amount of water through the water supply port 17, the amount of water stored in the evaporating dish 16 can be secured even before the defrosting operation is started, and the heat dissipation amount of the first condenser 39 can be increased.

  According to this embodiment, since the water supply path 18 for supplying water to the evaporating dish 16 from the water supply opening 17 provided in the heat insulating box 3 is provided, water is supplied from the water supply opening 17 to the evaporating dish 16 even before defrosting of the cooler 35, The first condenser (condenser) 39 can be dissipated by the latent heat of water in the evaporating dish 16. Thereby, the heat dissipation of the 1st condenser 39 can be enlarged, and the cooling capacity of the refrigerator 1 can be improved.

  Further, since the water supply port 17 is exposed when the door 4a is opened, it is possible to prevent dust from entering from the water supply port 17.

  In addition, a notification unit 21 that performs notification by voice or display and a sensor 48 that detects the amount of water stored in the evaporating dish 16 are provided. When the amount of water stored in the evaporating dish 16 falls below a predetermined amount, the notification unit 21 notifies the user. Therefore, the user can easily grasp the amount of water stored in the evaporating dish 16 and can supply water. Therefore, drought of the evaporating dish 16 can be prevented.

  Further, since the first condenser 39 is immersed in water in contact with the inner bottom surface 16a of the evaporating dish 16, the first condenser 39 is surely immersed in water in the evaporating dish 16. Thereby, the heat dissipation of the 1st condenser 39 can be enlarged reliably, and the cooling capacity of the refrigerator 1 can be improved.

  Further, the defrosted water in the cooler 35 or the water in the water supply tank 18 is guided onto the first condenser 39 and is collected in the evaporating dish 16 through the first condenser 39. The amount of heat radiation can be increased, and the cooling capacity of the refrigerator 1 can be improved.

(Second Embodiment)
Next, FIG. 4 shows a front view of the refrigerator 1 of the second embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In this embodiment, the shape of the door 4a and the installation location of the water supply port 17 are different.

  The door 4a provided on the front surface of the refrigerator compartment 4 is provided with a recess 4b in which a peripheral portion of the door 4a is notched. A water supply port 17 is provided on the front surface of the heat insulating box 2 and water is supplied to the water supply port 17 through the recess 4b. Thereby, the user can supply water from the water supply port 17 even when the door 4a is closed.

  A lid may be provided on the front surface of the water supply port 17. Thereby, it is possible to prevent dust and dust from entering from the water supply port 17.

  According to the present embodiment, the same effect as that of the first embodiment can be obtained, and water is supplied to the water supply port 17 through the recess 4b, so that the user can supply water from the water supply port 17 even when the door 4a is closed. It can be carried out. Therefore, the convenience of the refrigerator 1 can be improved.

(Third embodiment)
Next, FIG. 5 shows a front view of the refrigerator 1 of the third embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. The installation location of the water supply port 17 is different from that of the first embodiment.

  The water supply port 17 is provided on the outer surface of the side wall 3 a of the heat insulating box 3. Thereby, the user can supply water from the water supply port 17 even when the doors 4a and 5a are closed. A lid may be provided on the front surface of the water supply port 17. Thereby, it is possible to prevent dust and dust from entering from the water supply port 17.

  According to the present embodiment, the same effect as that of the first embodiment can be obtained, and the water supply port 17 is provided on the outer surface of the side wall 3a of the heat insulating box 3, so that the user can supply the water supply port even when the door 4a is closed. Water can be supplied from 17. Therefore, the convenience of the refrigerator 1 can be improved.

  According to this invention, it can utilize for the refrigerator provided with the evaporating dish which collects defrost water in a machine room.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Main body part 3 Heat insulation box 3a Side wall 4 Refrigeration room 4a Door 4b Recess 4c Bottom face 5 Freezer room 6 Machine room 7, 8 Cold air passage 9 Blower fan 10 Grill 16 Evaporating dish 16a Inner bottom face 17 Water supply port 18 Water supply path 19 Thermal insulation Wall 20 Heat insulation wall 21 Notification section 25 Drain pan 27 Water supply pipe 31 Compressor 32 Blower fan 33 Dryer 34 Switching valve 35 Cooler 36 Refrigerant pipe 37 Defrost heater 38 Drain pipe 39 First condenser 39a Water cooling section 39b Air cooling section 39c Fin 39d Lower end 40 Second condenser 41 Heat pipe 42, 43 Capillary tube 44 First path 45 Second path 46 Water supply pump 47 Switching valve 48 Sensor

Claims (7)

An insulation box that fills with foam insulation and forms a storage chamber;
A door that opens and closes the front of the storage room;
A machine room with a compressor operating the refrigeration cycle;
A cooler that generates cold air in the low temperature part of the refrigeration cycle;
An evaporating dish arranged in the machine room and collecting defrost water of the cooler;
A condenser arranged in a high temperature portion of the refrigeration cycle and immersed in defrosted water in the evaporating dish;
A water supply path for supplying water to the evaporating dish from a water supply port provided in the heat insulation box;
A refrigerator characterized by comprising.   The refrigerator according to claim 1, wherein the water supply port is exposed when the door is opened.   2. The water supply port according to claim 1, wherein the water supply port is provided on a front surface of the heat insulating box and water is supplied to the water supply port through the recess. The refrigerator described.   The refrigerator according to claim 1, wherein the water supply port is provided on an outer surface of a side wall of the heat insulating box. A notification unit for performing notification by voice or display, and a sensor for detecting the amount of water stored in the evaporating dish
The refrigerator according to any one of claims 1 to 4, wherein when the amount of water stored in the evaporating dish becomes equal to or less than a predetermined amount, notification is performed by the notification unit.   The refrigerator according to claim 1, wherein the condenser is disposed in contact with an inner bottom surface of the evaporating dish.   The defrost water of the said cooler or the water from the said water supply inlet is guide | induced on the said condenser, and is collect | recovered by the said evaporating dish through the said condenser. The refrigerator described.

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