JP3653426B2 - refrigerator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a refrigerator in which a heat exchanger in which heat exchange fins are spirally wound around a surface of a refrigerant pipe is attached.
[0002]
[Prior art]
Conventionally, this type of household refrigerator has been provided with a foam insulation material such as polyurethane foam between a steel plate outer box and a hard resin inner box as disclosed in, for example, Japanese Patent Laid-Open No. 8-338868 (F25D23 / 00). It is comprised from the heat insulation box with which it filled with the foaming system, and the freezer compartment, the refrigerator compartment, the vegetable compartment, etc. are comprised by dividing this heat insulation box body (inside of a store | warehouse | chamber) into plurality. A cooler is installed behind the freezer compartment, and the cool air cooled by the cooler is circulated to each chamber to cool each to a predetermined temperature.
[0003]
In addition, a machine room is formed in the lower part of the heat insulation box, and in this machine room, a compressor and a condenser (heat exchanger) that constitute a refrigeration cycle together with the cooler, a blower for air-cooling these, and the like Is installed. And while the compressor was drive | operated, the said air blower was also drive | operated and it was set as the structure which ventilates a compressor and a condenser and is air-cooled.
[0004]
In addition, as the condenser, for example, there is one that employs a heat exchanger in which heat exchange fins are spirally wound on the surface of continuous refrigerant pipes configured in two rows. Conventionally, for example, a clip or the like is engaged with the surface of the refrigerant pipe from between the heat exchange fins, and the clip is screwed to the bottom surface of the machine room.
[0005]
[Problems to be solved by the invention]
However, since the heat exchange fin is spirally wound around the refrigerant pipe, it is difficult to engage the clip with the refrigerant pipe. Therefore, if an attempt is made to fix the heat exchange fin by forming a screwing hole, an unreasonable force is applied to the portion to be screwed, and the heat exchange fin is deformed.
[0006]
If the condenser cannot be completely fixed for this reason, it will come into contact with other equipment due to vibration during transport of the refrigerator, etc., and the heat exchange fins may be deformed by the impact, or the compressor The operation of the fan and the operation of the blower causes a problem that the condenser vibrates and generates noise. Furthermore, when vibration is generated with the condenser tilted, excessive stress is applied to the joint portion of the refrigerant pipe of the condenser, causing damage to the joint portion.
[0007]
The present invention has been made in order to solve the conventional technical problem, and in attaching a heat exchanger in which heat exchange fins are wound around the surface of a refrigerant pipe, the heat exchanger can be easily and A refrigerator that can be securely fixed is provided.
[0008]
[Means for Solving the Problems]
The refrigerator of the present invention is a refrigerator in which a heat exchanger in which heat exchange fins are spirally wound is attached to the surface of a continuous refrigerant pipe bent in at least two rows on the left and right sides. fin heat exchanger housing respectively, the first fitting and abutting the body and the body to the heat exchanger fins of the refrigerant pipe before Symbol two rows having a plurality of housing portions that sandwich the fins the heat exchanger the enters between two rows heat exchanger fins of the refrigerant pipe from the first and a protruding wall height dimension for over between the centers of the refrigerant pipe of the second stage from the bottom from the center of the lowermost refrigerant pipe And 2 fixtures.
[0009]
According to the present invention, in a refrigerator in which a heat exchanger in which heat exchange fins are spirally wound is attached to the surface of continuous refrigerant pipes configured in at least two rows, each row of refrigerant pipes and heat exchange A first fixture having a plurality of accommodating portions for respectively accommodating the heat exchange fins and sandwiching the heat exchange fins, a main body abutting on the heat exchange fins of the refrigerant pipes in each row, and each row from the main body. And a second fitting provided with a projecting wall that enters between the heat exchange fins of the refrigerant pipe, so that the refrigerant pipe and the heat exchange fin of each row are respectively placed in the accommodating portion of the first fixture. The housing prevents the heat exchanger from coming off. Further, the protruding wall of the second fixture is inserted between the heat exchange fins of the refrigerant pipes in each row, and the refrigerant pipes and the heat exchange fins are supported by the main body, so that the inclination and the horizontal direction of the heat exchanger are increased. The movement to can also be prevented. As a result, the heat exchanger can be easily and reliably attached, and deformation and breakage of the heat exchange fins can be prevented or suppressed. Since the projecting wall has a dimension that enters between the heat exchange fins in a wider range than the range extending between the centers of at least two stages of refrigerant piping, the projecting wall holds the heat exchanger in a wide range, This inclination can be prevented more reliably.
[0010]
The refrigerator of the invention of claim 2 is characterized in that, in addition to the above, the opening size of the accommodating portion is made smaller than the outer diameter size of the heat exchange fin.
[0011]
According to the invention of claim 2, in addition to the above, since the opening size of the housing portion is made smaller than the outer diameter size of the heat exchange fin, the refrigerant pipe and the heat exchange fin are housed in the housing portion. The replacement fin is firmly clamped. As a result, the heat exchanger can be more reliably prevented from falling off from the accommodating portion of the first fixture.
[0012]
[0013]
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a front view of a refrigerator 1 to which the present invention is applied, FIG. 2 is a longitudinal side view of the refrigerator 1, FIG. 3 is an exploded perspective view of a back plate 49 and a back heat insulating material 50 of the refrigerator compartment 11 of the refrigerator 1, and FIG. FIG. 5 is a plan sectional view of the partition wall 7 portion of the refrigerator 1, and FIG. 6 is a refrigerant circuit diagram of the refrigeration cycle of the refrigerator 1.
[0015]
The refrigerator 1 is composed of an outer box 2 made of a steel plate and a heat insulating box 6 having a front opening formed by filling a heat insulating material 4 such as foamed polyurethane in an in-situ foaming method between inner boxes 3 made of hard resin such as ABS. ing. The inside of the heat insulating box 6 is partitioned vertically by a partition wall 7 formed of a heat insulating wall integrally formed with the heat insulating box 6, and the inside of the heat insulating box 6 above the partition wall 7 is an upper partition. The member 8 is divided vertically.
[0016]
The upper partition member 8 is provided with a refrigerator compartment 11 and the upper partition member 8 and the partition wall 7 are provided with a vegetable compartment 12. Further, the opening edge of the heat insulating box 6 below the partition wall 7 is divided vertically by a lower partition member 9, and the lower side of the lower partition member 9 is a freezer compartment 13. Further, the partition wall 7 and the lower partition member 9 are further divided into left and right sides by a heat insulating wall 30 (FIG. 5), and the left side is an ice making chamber 10 and the right side is a select chamber 15 (FIG. 5). In FIG. 5, the hatching of the partition wall 7 is omitted for explanation.
[0017]
The front opening of the refrigerator compartment 11 is closed openably and closably by a rotatable heat insulating door 14, and the freezer compartment 13 and the vegetable compartment 12 are provided with drawer-type heat insulating doors 16 provided with containers 16 A and 17 A having top openings. 17 are each opened and closed freely. Further, the ice making chamber 10 is also opened and closed by a drawer-type heat insulating door 18 provided with a container 18A having an upper opening, and the select chamber 15 is also opened and closed by a similar drawer-type heat insulating door 19 (FIG. 1). Has been. Reference numeral 20 denotes a control panel provided at the lower front portion of the door 14.
[0018]
An automatic ice making machine 21 is installed in the upper part of the ice making chamber 10. Further, the interior of the vegetable compartment 12 is divided forward and backward by a partition plate 22 and a cooler front plate 23, and a cooling chamber 24 is formed on the rear side of the cooler front plate 23, and the refrigerator compartment 24 is refrigerated. A room cooler 26 is provided vertically. A refrigerating room blower 27 is provided above the refrigerating room cooler 26, and a defrost heater 28 is provided below the refrigerating room cooler 26. A drain receiver 29 is formed below the defrost heater 28.
[0019]
Further, from the back of the ice making chamber 10 and the select chamber 15 to the upper back of the freezing chamber 13 is partitioned forward and backward by a partition plate 32 and a cooler front plate 33, and a cooling chamber 34 is formed behind the cooler front plate 33. In this cooling chamber 34, a freezer cooler 36 is provided vertically. A freezer blower 37 is provided above the freezer cooler 36, and a defrost heater 38 is provided below the freezer cooler 36. A drain receiver 39 is formed below the defrost heater 38.
[0020]
An ice making chamber discharge port, a select chamber discharge port, and the like are formed in the upper portion of the partition plate 32, a freezer chamber discharge port 13A is formed in the center portion, and a freezer compartment suction port 13B is formed in the lower portion of the partition plate 32. Is formed. Note that a motor damper (not shown) that opens and closes the flow path based on the temperature of the select chamber 15 is attached to the select chamber discharge port (not shown).
[0021]
On the other hand, a vegetable room suction port 12A is formed in the lower part of the partition plate 22 at the back of the vegetable room 12, and the upper end of the space between the partition plate 22 and the cooler front plate 23 communicates with a refrigeration room rear duct 47 described later. . Furthermore, the vegetable compartment discharge port 12B for blowing cold air to the lower side of the upper partition member 8 is formed in the upper part of the partition plate 22.
[0022]
On the other hand, a back plate 49 and a back heat insulating material 50 are attached to the back side of the back of the inner box 3 at a distance from the back of the inner box 3 at the back of the refrigerator compartment 11. The refrigerator compartment rear duct 47 extending is formed. A refrigerator discharge port 11 </ b> A is formed on the left and right sides of the back plate 49 and penetrates the back heat insulator 50 and communicates with the refrigerator back duct 47. Further, a plurality of shelves 51 are built in the refrigerator compartment 11.
[0023]
In addition, on the left and right sides of the back plate 49, recessed portions 31 and 31 are formed on both sides of the back heat insulating material 50 and extend in the vertical direction, and an illumination lamp 59 is attached in each of the recessed portions 31 and 31. The front surfaces of the recesses 31 are closed by a light-transmitting shade (not shown) (note that the left side illumination lamp 59 is seen through in FIG. 2).
[0024]
Furthermore, a partition plate 42 is attached to the lower part of the refrigerator compartment 11 at a predetermined interval above the upper partition member 8, and an openable / closable lid 43 is rotatable on the front side of the partition plate 42. A built-in chamber 44 is formed in a space that is suspended and surrounded by these. A retractable container 48 is accommodated in the built-in chamber 44. Reference numeral 44A denotes a built-in chamber discharge port formed in the back plate 49, which communicates with the lower part of the refrigerator compartment back duct 47.
[0025]
The upper partition member 8 is formed with a refrigerator compartment suction port 51, and the refrigerator compartment inlet port 51 communicates with the vegetable compartment 12. Furthermore, a water supply tank (not shown) for supplying water to the automatic ice making machine 21 is stored in the built-in chamber 44.
[0026]
The upper surface of the container 17A stored in the vegetable compartment 12 is closed with a lid 53, and the cold air returning from the refrigerator compartment 11 is circulated around the container 17A through the refrigerator compartment suction port 51, It is returned to the cooling chamber 24 from the vegetable chamber inlet 12A. The return cold air from the ice making chamber 10 and the freezing chamber 13 is returned to the cooling chamber 34 from the freezer inlet 13B. The select chamber 15 is returned to the cooling chamber 34 from a select chamber suction port (not shown).
[0027]
Here, a recessed portion 54 that is recessed in the vertical direction is formed in the front central portion of the rear heat insulating material 50, and a suction port 56 is attached to the rear plate 49 at a position corresponding to the lower portion of the recessed portion 54. ing. An air curtain rear duct 57 is formed in the recessed portion 54 closed by the rear plate 49, and a temperature compensating electric heater H is attached therein. Reference numeral 55 denotes a cover attached to the suction port 56.
[0028]
An air curtain blower 68 provided with a turbo fan 67 that sucks cold air from the axial direction (front) and blows it out in the radial direction is disposed in the air curtain rear duct 57 located behind the suction port 56. A top plate 63 is attached to the top surface of the refrigerator compartment 11, and an air curtain top surface duct 64 is formed in the top surface plate 63 in the front-rear direction. The rear end of the air curtain top face duct 64 communicates with the upper end of the air curtain rear face duct 57, and the front end of the air curtain top face duct 64 is located near the front opening of the refrigerator compartment 11. A plurality of air outlets 66 are arranged side by side (note that the blower 68 is seen through in FIG. 2).
[0029]
On the other hand, a machine room 41 is formed in the lower part of the heat insulation box 6, and the refrigerant circuit of the refrigeration cycle of FIG. The compressor 69 etc. which comprise are installed. In the refrigerant circuit diagram of FIG. 6, 71 is a condensing device, 72 is a motor-driven three-way valve, and 73 and 74 are capillary tubes. The capillary tubes 73 and 74 and a refrigerant suction pipe 69S described later are soldered so as to be able to exchange heat.
[0030]
The refrigerant discharge pipe 69D of the compressor 69 is connected to the condensing device 71, and the outlet portion 71A of the condensing device 71 is connected to the three-way valve 72 via the dryer 70. One outlet of the three-way valve 72 is connected to the inlet of the refrigerating room cooler 26 via the capillary tube 73, and the outlet of the refrigerating room cooler 26 is connected to the inlet of the freezing room cooler 36.
[0031]
The other outlet of the three-way valve 72 is connected to the inlet of the freezer cooler 36 via the capillary tube 74, and the outlet of the freezer cooler 36 is connected to the refrigerant suction pipe 69S of the compressor 69. Yes. The three-way valve 72 has a function of opening and closing the outlet so that the liquid refrigerant from the condensing device 71 flows selectively to the capillary tube 73 or the capillary tube 74, and closes both outlets to completely close the flow path. It also has a function and a function of opening both outlets. Reference numeral 40 denotes a header serving as a refrigerant liquid reservoir connected between the freezer cooler 36 and the compressor 69.
[0032]
When the compressor 69 is operated by a control device (not shown), the high-temperature and high-pressure gas refrigerant discharged from the refrigerant discharge pipe 69D of the compressor 69 flows into the condensing device 71, dissipates heat, and is condensed and liquefied. Then, the refrigerant exiting the condenser 71 enters the three-way valve 72 through the dryer 70.
[0033]
When there is a cooling request from both a temperature sensor (not shown) that detects the temperature of the freezer compartment 13 and the refrigerator compartment 11, the control device opens the three-way valve 72 to the capillary tube 73 side. As a result, the refrigerant condensed and liquefied by the condensing device 71 is decompressed by the capillary tube 73, and then sequentially flows into the refrigerating room cooler 26 and the freezing room cooler 36, evaporates, and is cooled by both coolers. Demonstrate ability. When there is Mikara cooling requirements of the temperature sensor of the freezing compartment 13, the control unit opens the three-way valve 72 to the side capillary tube 74. As a result, the refrigerant condensed and liquefied by the condensing device 71 is decompressed by the capillary tube 74, then flows into the freezer cooler 36 and evaporates, and the freezer cooler 36 exhibits a cooling capacity. When there is no cooling request from the temperature sensors of both the freezer compartment 13 and the refrigerator compartment 11, the control device stops the compressor 69 (also stops the blowers 27 and 37) and closes both outlets of the three-way valve 72. , Completely close the flow path.
[0034]
When the freezer blower 37 is operated, the cool air in the cooling chamber 34 cooled by the freezer cooler 36 is discharged from the ice making chamber discharge port and the select chamber discharge port to the ice making chamber 10 and the select chamber 15. At the same time, it is discharged into the freezer compartment 13 from the freezer outlet 13A. And after circulating and cooling each room | chamber interior, cold air returns in the cooling chamber 34 from the said freezer compartment inlet 13B (solid line arrow in FIG. 2). Thereby, the freezer compartment 13 is maintained at a predetermined freezing temperature (about −20 ° C.).
[0035]
The temperature of the ice making chamber 10 is also configured such that the freezing temperature, ice is made in Tsu by the automatic ice maker 21. In the select chamber 15, a control temperature can be selected in the range from the freezer compartment to the vegetable compartment, and the amount of cold air supplied from the select chamber outlet is controlled by the motor damper so as to be the selected temperature. The The motor damper is controlled by the controller based on a temperature sensor (not shown) that detects the temperature of the select chamber 15.
[0036]
On the other hand, when the refrigeration room blower 27 is operated, the cold air in the cooling chamber 24 cooled by the refrigeration room cooler 26 flows into the refrigeration room rear duct 47, and the refrigeration room discharge port 11A. The air is discharged from the chamber discharge port 44 </ b> A into the refrigerator compartment 11 and the built-in chamber 44, circulates inside and cools, and then flows into the refrigerator compartment suction port 51.
[0037]
The cold air flowing into the refrigerator compartment suction port 51 passes through the upper partition member 8, mixes with the cold air blown out from the vegetable compartment discharge port 12B, enters the vegetable compartment 12, circulates around the container 17A, and passes through the container 17A. After indirectly cooling, it is sucked in from the vegetable room suction port 12 </ b> A and returns to the cooling room 24. Thereby, the inside of the refrigerator compartment 11 is maintained at a refrigerator temperature (about + 3 ° C. to + 5 ° C.), and the vegetables in the container 17A are kept cold in a state where drying is prevented (solid arrow in FIG. 2).
[0038]
The control device performs ON / OFF control of the freezer compartment blower 37 based on the temperature of the freezer compartment 13 detected by the temperature sensor, and performs ON / OFF control of the refrigerator compartment fan 27 based on the temperature of the refrigerator compartment 11. However, when any one of the doors 14 and 17 is opened, the refrigerator room blower 27 is stopped, and when any one of the doors 16, 18 and 19 is opened, the freezer room blower 37. To stop. This suppresses cold air leakage from each chamber.
[0039]
Further, the control device stops the air curtain blower 68 when the door 14 of the refrigerator compartment 11 is closed and the temperature in the refrigerator compartment 11 is lower than a predetermined high temperature such as + 6 ° C. Yes. When the door 14 is opened, the control device operates the air curtain fan 68 and lights the illumination lamp 59.
[0040]
When the air curtain blower 68 is operated, cold air is sucked from the axial direction and blown in the radial direction, so that the cold air in the refrigerator compartment 11 is sucked from the suction port 56 through the cover 55 and is used for the air curtain. It is sucked into the blower 68. Then, it is blown out to the air curtain rear duct 57, rises there, enters the air curtain top duct 64, flows forward there, and is blown out from the blower outlet 66 to the opening of the lower refrigerator compartment 11. .
[0041]
As a result, a cold air curtain is formed over the entire area of the opening of the refrigerating chamber 11 as indicated by the dashed arrows in FIG. 2, so that the outside air trying to enter the refrigerating chamber 11 when the door 14 is opened. And the cold air which is going to leak from the inside of the refrigerator compartment 11 can be prevented as much as possible by the air curtain.
[0042]
Here, the control device accumulates the time during which the door 14 is opened, and when the door 14 is closed, the air curtain fan 68 is continuously operated for the same time as the accumulated time. Then stop. Thereby, after the door 14 is closed, the temperature rise and the temperature unevenness in the refrigerator compartment 11 generated while the door 14 is opened can be quickly reduced and made uniform. Furthermore, for example, when the temperature in the refrigerator compartment 11 rises to a high temperature such as + 6 ° C. or more due to, for example, a large amount of heat load, the control device closes the door 14 and further increases the accumulated time. Even after the elapse of time, the air curtain blower 68 is operated.
[0043]
Thereby, since the cold air in the refrigerator compartment 11 is stirred, the temperature recovery (decrease) in the refrigerator compartment 11 is speeded up. In addition, the air in the refrigerator compartment 11 is agitated by the operation of the air curtain blower 68 as described above, so that the temperature in the refrigerator compartment 11 becomes uniform. Moreover, since the cold air curtain is formed when the door 14 is opened, it can contribute to energy saving. Further, even when the door 14 is closed, when the temperature in the refrigerator compartment 11 rises to a predetermined value or more, the air curtain blower 68 is operated. It is possible to speed up the temperature recovery (decrease, especially the pocket inside the door 14) in the refrigerator compartment 11 by stirring the fan 68 for operation.
[0044]
Further, the control device integrates the operation time of the compressor 69, and when the total operation time reaches a predetermined time, the defrosting heaters 28 and 38 are heated. Thereby, the refrigerator 26 for refrigerator compartments and the refrigerator 36 for freezer compartments are heated, and the frost adhering to them is melt | dissolved. Drain water generated by melting frost is received by drain receivers 29 and 39 arranged on the lower side of each cooler.
[0045]
Next, with reference to FIGS. 7-16, the structure in the machine room 41 of the refrigerator 1 is demonstrated in detail. 7 is a vertical side view of the lower part of the refrigerator 1, FIG. 8 is a rear view of the lower part of the refrigerator 1, FIG. 9 is a plan view of the machine room 41 of the refrigerator 1, and FIG. 10 is an exploded view of the refrigerator 1 in the machine room 41 part. A perspective view, FIGS. 11 and 12 are enlarged longitudinal sectional side views of the refrigerator 1 at the front of the machine room 41, and FIG. 13 is an enlarged front view of the lower portion of the refrigerator 1.
[0046]
The bottom surface 6 </ b> A of the heat insulating box 6 that becomes the top surface of the machine room 41 has a stepped shape with a low front part and a high rear part, and the front, bottom, and rear surfaces of the machine room 41 are open. A compressor base 79 is attached to the rear portion of the bottom surface of the machine room 41 between the angle members 80 on the left and right bottom surfaces, and the compressor 69 is installed on the right side when viewed from the front of the compressor base 79. ing.
[0047]
A kick plate 82 is mounted on the front side of the heat insulating box 6 across the left and right sides of the door 16 in front of the machine room 41. Between the kick plate 82 and the compressor base 79, a refrigeration cycle is provided. A plate-type evaporating dish condenser 83 constituting a part of the condensing device 71 is attached to the angle members 80 and 80 at the bottom of the machine chamber 41, and there is an interval between the bottom surface 6A and the installation floor surface. Are arranged.
[0048]
The evaporating dish 90 is placed on the evaporating dish capacitor 83 and is positioned between the evaporating dish capacitor 83 and the bottom surface 6A. In the figure, 95 and 95 are evaporating dish rails provided on both sides of the evaporating dish condenser 83 so as to be slidable forward and backward.
[0049]
The inside of the machine room 41 is partitioned into a condenser plate side 83 and a compressor base 79 side by a partition plate 84 located on the front side of the compressor 69, and a communication portion 86 is formed on the left side of the partition plate 84. Yes. Further, a fan partition plate 87 made of, for example, a synthetic resin is attached to the left side of the compressor 69, and an opening 87A is formed in the fan partition plate 87. The fan partition plate 87 is integrally formed with a storage portion 103 that is slanted to the front. The rear portion of the storage portion 103 opens to the left and right through the opening 87A, and the rear surface is rearward through the opening 103A. Open towards.
[0050]
Then, a machine room blower 88 is inserted into the storage portion 103 from the rear opening 103A and attached. The machine room blower 88 is a rectangular axial fan whose overall shape is substantially square, and has a configuration in which the motor part 88M is in the center and the fan part 88F is arranged around the fan part 88F. Further, the machine room blower 88 is inserted into the inner portion of the storage portion 103 and is positioned at the opening 87A, and as a whole, as shown in FIG. ing.
[0051]
Thereby, the upper surface 88A of the machine room blower 88 is inclined low toward the evaporating dish condenser 83 as viewed in the axial direction. Moreover, since the space | interval with the compressor stand 79 is comprised in the rear lower corner part of the fan partition plate 87 by such inclination arrangement | positioning, the refrigerant | coolant piping 75 of a refrigerating cycle can be penetrated using this.
[0052]
Also, a hook-like claw portion 87B is integrally formed at the rear portion of the fan partition plate 87, and the claw portion 87B is a rear surface of the machine room blower 88 in a state where the machine room blower 88 is housed in a predetermined position. Protrusively. Thereby, the blower 88 for machine rooms does not come out backward. When the machine room blower 88 is pulled backward from the storage portion 103, a unit cover 91 (to be described later) is first removed, and the claw portion 87B is deformed outward and then pulled backward.
[0053]
The machine room blower 88 is operated to suck air from the communication part 86 side and blow it out to the compressor 69 side. A main condenser 104 constituting a part of the condensing device 71 is installed on a compressor stand 79 on the air suction side of the machine room blower 88. FIG. 14 is an exploded explanatory view of the main condenser 104 and the compressor stand 79, FIG. 15 is a rear view of the fixture 142 and the main condenser 104 as a first fixture, and FIG. 16 is a second fixture. It is a rear view of the fixture 143 and the main condenser 104.
[0054]
As shown in each figure, the main condenser 104 is composed of continuous refrigerant pipes 141 bent in two rows on the left and right and six steps on the upper and lower sides, and on the surface of the refrigerant pipe 141, heat conductive metallic plate-like heat such as an aluminum thin plate is formed. The replacement fin 140 is structured to be spirally wound.
[0055]
The main condenser 104 is mounted on the compressor base 79 by mounting members 142 and 143 made of hard synthetic resin, for example. Here, the fitting (first fitting) 142 is formed with two accommodating portions 142A and 142A that open upward, and the opening size of each accommodating portion 142A is for heat exchange of the main condenser 104. The outer diameter of the fin 140 is smaller than the outer diameter, and flanges 142B projecting outward and obliquely upward are formed on both edges of the opening.
[0056]
In addition, a fixing portion 144 that protrudes horizontally toward the rear is integrally formed on the lower rear edge of the fixture 142, and a screw hole that is previously drilled in the compressor base 79 is formed in the fixing portion 144. A notch 145 for inserting a screw 146 to be screwed into 79A is formed. Further, an engaging portion 147 protruding downward is integrally formed on the lower surface of the fixture 142, and this engaging portion 147 is fitted into an engaging hole 148 formed in the compressor base 79 in advance. .
[0057]
On the other hand, the fixture (second fixture) 143 is constituted by a substantially L-shaped main body 143A as a whole, and the corner portion between the vertical surface and the horizontal surface of the main body 143A has a smooth curved shape (main condensation). The bend portion of the heat exchanger 104 substantially matches the curved shape of the outer edge of the fin 140 for heat exchange. Further, a projecting wall 149 that protrudes inward (rear) in a substantially L-shaped cross section is integrally formed at the center in the left-right direction of the main body 143A. The protruding wall 149 is formed to have a height dimension extending from the center of the lowermost refrigerant pipe 141 of the main condenser 104 to the center of the upper (second stage from the bottom) refrigerant pipe 141. At the same time, the width of the protruding wall 149 is formed to have a dimension approximately equal to the dimension between the heat exchange fins 140 and 140 in each row of the main condenser 104.
[0058]
Engagement claws 150 are formed on both sides of the lower front end of the fixture 143 so as to protrude downward. The engagement claws 150 are formed in advance in the engagement holes 151 formed in the compressor base 79. Is engaged. Screw holes 153 and 153 for inserting screws 152 and 152 to be screwed into screw holes 79B and 79B previously formed in the compressor base 79 are formed on both sides of the lower rear end of the main body 143A. .
[0059]
With the above configuration, when the main condenser 104 is fixed on the compressor base 79, first, the engaging portion 147 of the fixture 142 is engaged with the engagement hole 148 formed in the compressor base 79, The screw 146 is screwed as described above to fix the fixture 142 to the compressor base 79. Next, the engaging claw 150 of the attachment 143 is inserted into and engaged with the engagement hole 151 formed in the compressor base 79, and the screws 153 and 153 are screwed together as described above to attach the attachment 143 to the compressor base 79. Secure to.
[0060]
Then, the protruding wall 149 of the fixture 143 is inserted between the heat exchange fins 140 and 140 of the two rows of refrigerant pipes 141 of the main condenser 104, and the front ends of the heat exchange fins 140 and 140 are brought into contact with the main body 143A. The lowermost refrigerant pipe 141 of the refrigerant pipe 141 and the heat exchanging fin 140 are fitted into the accommodating portions 142 </ b> A and 142 </ b> A of the fixture 142. At this time, the bend portions of the heat exchange fins 140 of the lowermost and second-stage refrigerant pipes 141 are in contact with the main body 143 </ b> A of the fixture 143. When the unit cover 91 is attached as described above, the unit cover 91 is located immediately after the main condenser 104.
[0061]
As a result, the main condenser 104 is mounted on the compressor stand 79. At this time, since the flange 142B is formed in the opening of the accommodating portion 142A of the fixture 142, the heat exchanging fin 140 can be easily inserted, and the opening size of the accommodating portion 142A is the same as the outside of the heat exchanging fin 140. Since it is formed smaller than the diameter dimension, after the main condenser 104 is accommodated in the accommodating portion 142A, the main condenser 104 is difficult to jump upward.
[0062]
Furthermore, since the height of the protruding wall 149 of the fixture 143 is formed to be higher than the height between the center of the refrigerant pipe 141 from the lowest stage to the second stage, the main condenser 104 is inclined to the left and right. Since the main body 143A of the fixture 143 exists on the front side of the main condenser 104, movement in the front-rear direction (horizontal direction) is also prevented.
[0063]
On the other hand, the refrigerant discharge pipe 69D of the compressor 69 is located on the air blowing side of the machine room blower 88, and is further bent in a direction substantially orthogonal to the flow of air blown from the condenser blower 88. Has been. The refrigerant discharge pipe 69D may be bent more times.
[0064]
The three-way valve 72 is positioned on the windward side of the main condenser 104 and is attached to the bottom surface 6A (inclined portion) of the heat insulating box 6. Further, the final outlet of the condensing device 71 and the dryer positioned there. 70 is also arranged behind the three-way valve 72 on the windward side of the main condenser 104.
[0065]
The evaporating dish 90 has a handle portion 90A protruding forward at the center of the front edge, and a receiving portion 90B protruding toward the main condenser 104 is integrally formed on the left side of the rear edge. In addition, 90C and 90C are backlash prevention protrusions formed on the upper surfaces of both sides of the handle portion 90A, and 90D is a stopper formed to protrude from the lower edge of the handle portion 90A. Water sealing devices 107 and 108 are attached to the bottom surface 6A so as to correspond to the upper part of the receiving portion 90B. The water sealing devices 107 and 108 are connected to the drain pipes 109 and 108 connected to the drain receivers 29 and 39, respectively. 111 is inserted.
[0066]
These water sealing devices 107 and 108 have a so-called trap structure for storing a part of drain water flowing down through the drain pipes 109 and 111 and sealing it, and as shown in FIG. Located on the front side. The drain pipes 109 and 111 are drawn out from the rear portion of the heat insulating box 6 and then drawn forward along the inclined surface 103A of the upper storage portion 103 of the machine room blower 88 as shown in FIG. The drain pipes 109 and 111 are inserted into the water sealing devices 107 and 108, and therefore, the drain pipes 109 and 111 are inclined downward.
[0067]
As a result, the drain water dropped from the respective coolers 26 and 36 and received by the drain receivers 29 and 39 flows into the drain pipes 109 and 111, respectively, and further flows into the upper inclined surface 103A of the machine room blower 88. After flowing down along the inclination, the water smoothly flows into the receiving portion 90B of the evaporating dish 90 through the water sealing devices 107 and 108.
[0068]
Further, the rear opening of the machine room 41 is closed by a detachable unit cover 91 (FIG. 8 shows a state in which the unit cover 91 is removed). An exhaust port 93 is formed on the right side of the unit cover 91 (on the compressor 69 side).
[0069]
In the drawing, reference numeral 112 denotes a frame horizontal plate (becomes a part of the outer box 2) that borders the lower edge of the front opening of the heat insulating box 6, and is positioned in front of the machine room 41. An opening 112A is formed in the frame horizontal plate 112, and the evaporating dish 90 is taken in and out of the machine chamber 41 through the opening 112A.
[0070]
And the handle 113 for the refrigerator 1 is attached to the rear surface of this frame horizontal board 112 over the left and right in the form located outside the opening 112A. The carrying handle 113 is made of a hard synthetic resin and includes left and right attachment arm portions 113A and a grip portion 113B extending between the lower ends of the attachment arm portions 113A and 113A. The rear surface of the grip portion 113B has a smooth curved shape.
[0071]
On the other hand, the lower edge of the opening 112A of the frame horizontal plate 112 is formed with an insertion portion 112B having a substantially U-shaped cross section opened to the rear, and the grip portion 113B of the carrying handle 113 is inserted from the rear side. It is inserted into the portion 112B, and its rear surface is exposed with a predetermined distance for inserting fingers from the front edge 83A of the evaporating dish condenser 83. The grip portion 113B is inserted into the insertion portion 112B and is fixed from below by a screw 114 passing through the grip portion 113B. Further, the upper surfaces of the attachment arm portions 113A and 113A are fixed to the bottom surface 6A by screws 116. The transport handle 113 is attached to the heat insulating box 6.
[0072]
In this case, the tip of the screw 114 is located in the insertion portion 112B. Further, the front edge 83A of the evaporating dish condenser 83 is bent downward at a right angle as shown in FIG. Thus, when the carrying handle 113 is held, the risk of injury due to the screw 114 and the front edge 83A of the evaporating dish condenser 83 is avoided.
[0073]
Here, the kick plate 82 is detachably attached to the frame horizontal plate 112 and has a cross-sectional shape having an upper surface 82A and a front surface 82B and opened downward and rearward. In addition, a total of five rectangular intake ports 101... Are provided at the center of the upper surface 82A in the left-right direction.
[0074]
In addition, each inlet 101 ... is located in the downward projection surface of the door 16, and, thereby, each inlet 101 ... is concealed by the door 16 in the state which the door 16 closed. Furthermore, the outer edges of the air supply ports 101, 101 located at the left and right ends are positioned on the inner side of the left and right outer edges of the container 16 </ b> A.
[0075]
Next, the flow of air in the machine room 41 with the above configuration will be described. When the compressor 69 is operated as described above, the high-temperature and high-pressure refrigerant discharged from the compressor 69 first enters the evaporating dish condenser 83 through the refrigerant discharging pipe 69D, where it dissipates heat and drains in the evaporating dish 90. Heat water from below. The refrigerant that has left the evaporating dish condenser 83 then enters the main condenser 104, where it is condensed, and then passes through a condensing pipe (not shown) provided inside the outer box 2 of the heat insulating box 6 to reach the final state of the condenser 71. The dryer 70 is entered from the exit.
[0076]
The motor unit 88M of the machine room blower 88 is operated in synchronization with the compressor 69 to rotate the fan unit 88F. When the fan unit 88F rotates, outside air is sucked from the intake ports 101... On the upper surface 82A of the kick plate 82 located in front of the machine chamber 41 and the lower side of the kick plate 82 as shown by broken line arrows in FIG. After passing the upper side of the plate 90, the communication unit 86 is reached.
[0077]
The outside air that has entered the compressor base 79 side from the communication portion 86 flows into the main condenser 104 and cools it, and then is sucked into the machine room blower 88 and accelerated. The outside air accelerated by the machine room blower 88 reaches the compressor 69 through the periphery of the refrigerant discharge pipe 69D, blows around the air, cools the air, and then discharges to the outside from the exhaust port 93 of the unit cover 91. Will be.
[0078]
In addition, although the lower part of the main condenser 104 was hold | maintained with the fixtures 142 and 143 in the Example, not only that but depending on the direction and attachment position of the main condenser 104, the upper part and the right-and-left side part may be hold | maintained. Conceivable. In the embodiments, the main condenser 104 has been described as an example of the heat exchanger. However, the present invention is not limited to this, and the present invention is effective for any other heat exchanger.
[0079]
【The invention's effect】
As described above in detail, according to the present invention, in a refrigerator in which a heat exchanger in which heat exchange fins are spirally wound is attached to the surface of continuous refrigerant pipes configured in at least two rows, A first fitting having a plurality of accommodating portions that respectively accommodate the refrigerant pipe and the heat exchange fin and sandwiching the heat exchange fin, a main body that abuts on the heat exchange fin of the refrigerant pipe in each row, and this And a second fitting provided with a protruding wall that enters between the heat exchange fins of the refrigerant pipes of each row from the main body, so that each of the refrigerant pipes and the heat exchange fins of each row is provided with the first attachment. The heat exchanger is prevented from coming off by being housed in the tool housing. Further, the protruding wall of the second fixture is inserted between the heat exchange fins of the refrigerant pipes in each row, and the refrigerant pipes and the heat exchange fins are supported by the main body, so that the inclination and the horizontal direction of the heat exchanger are increased. The movement to can also be prevented. As a result, the heat exchanger can be easily and reliably attached, and deformation and breakage of the heat exchange fins can be prevented or suppressed. Furthermore, since the protruding wall has a dimension that enters between the heat exchange fins in a range wider than the range extending between the centers of at least two stages of the refrigerant pipes, the protruding wall holds the heat exchanger in a wide range. Thus, the inclination can be prevented more reliably.
[0080]
According to the invention of claim 2, in addition to the above, since the opening size of the housing portion is made smaller than the outer diameter size of the heat exchange fin, the refrigerant pipe and the heat exchange fin are housed in the housing portion. The replacement fin is firmly clamped. Thereby, in which heat exchanger it is possible to more reliably prevent the falling off from the accommodating portion of the first fixture.
[0081]
[Brief description of the drawings]
FIG. 1 is a front view of a refrigerator according to the present invention.
FIG. 2 is a vertical side view of the refrigerator of the present invention.
FIG. 3 is an exploded perspective view of a back plate and a back heat insulating material of the refrigerator compartment of the refrigerator of the present invention.
FIG. 4 is a plan sectional view of a refrigerator compartment portion of the refrigerator of the present invention.
FIG. 5 is a plan sectional view of a partition wall portion of the refrigerator of the present invention.
FIG. 6 is a refrigerant circuit diagram of the refrigeration cycle of the refrigerator of the present invention.
FIG. 7 is a vertical side view of the lower part of the refrigerator according to the present invention.
FIG. 8 is a rear view of the lower part of the refrigerator according to the present invention.
FIG. 9 is a plan view of the inside of the machine room of the refrigerator of the present invention.
FIG. 10 is an exploded perspective view of a machine room part of the refrigerator according to the present invention.
FIG. 11 is an enlarged vertical side view of the front part of the machine room of the refrigerator according to the present invention.
FIG. 12 is an enlarged vertical side view of the front of the machine room of the refrigerator of the present invention with the evaporating dish removed.
FIG. 13 is a half-cut front view of the lower part of the refrigerator according to the present invention.
FIG. 14 is an exploded perspective view of a main condenser and a compressor stand of the refrigerator of the present invention.
FIG. 15 is a rear view of the refrigerator fixture (first fixture) and the condenser according to the present invention.
FIG. 16 is a rear view of the refrigerator fixture (second fixture) and the condenser according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Outer box 3 Inner box 4 Polyurethane heat insulating material 6 Heat insulation box 11 Refrigerating room 13 Freezer room 14, 16, 17, 18, 19 Door 26 Refrigerating room cooler 36 Freezer room cooler 41 Machine room 69 Compressor DESCRIPTION OF SYMBOLS 71 Condensing apparatus 79 Compressor stand 79A, 79B, 153 Screw hole 82 Kick plate 83 Evaporating dish condenser 88 Machine room blower 90 Evaporating dish 101 Inlet 104 Main condenser 140 Heat exchange fin 141 Refrigerant piping 142, 143 Fixture 142A accommodating portion 143A main body 144 fixing portion 146, 152 screw 147 engaging portion 148, 151 engaging hole 149 projecting wall 150 engaging claw portion

Claims (2)

In a refrigerator comprising a heat exchanger in which heat exchange fins are spirally wound on the surface of a continuous refrigerant pipe bent in at least two rows on the left and right sides,
A first fixture having a plurality of accommodating portions for accommodating the refrigerant pipes and the heat exchange fins in each row, and sandwiching the heat exchange fins;
Before SL enters from contact with the body and the body to the heat exchanger fins of the refrigerant pipe of two rows between the heat exchanger fins of the refrigerant pipes of the two rows from the bottom from the center of the lowermost refrigerant pipe of the second stage A refrigerator comprising: a second fixture including a projecting wall having a height extending between the centers of the refrigerant pipes .   The refrigerator according to claim 1, wherein an opening size of the housing portion is smaller than an outer diameter size of the heat exchange fin.

Images