TWI679389B - refrigerator - Google Patents

Abstract

The refrigerator of the present invention includes: a heat-insulating box 2; a cooler 35; a cold air pipe 6; a hole portion 2d provided in the inner box 2b; a liquid reservoir 10; and a cover 13 covering the hole portion 2d; a liquid reservoir 10, comprising: a storage portion 10a for storing a refrigerant; a refrigerant inflow tube 10d; and a refrigerant outflow tube 10e; a space portion 16 is formed around the first welding portion 10b and the second welding portion 10c without being filled with the first heat insulating material 2c, The cover 13 is provided with a communication hole 13 a that communicates with the space portion 16.

Description

refrigerator

The present invention relates to a refrigerator including an accumulator.

Patent Document 1 discloses a conventional refrigerator including a liquid reservoir. The refrigerator forms a plurality of storage compartments by an insulated box. The heat-insulating box is formed by filling a heat-insulating material between the inner box and the outer box. There is a cold air pipe in the front of the inner box, and a cooler is arranged in the cold air pipe.

In addition, a reservoir of a heat-insulating material buried in a heat-insulating box is connected to a rear stage of the cooler. In the accumulator, the inflow pipe is welded on the upstream side of the storage section storing the liquid refrigerant, and the outflow pipe is welded on the downstream side. The inflow pipe is welded to the cooler outside the heat insulation box, and the outflow pipe is welded to the compressor outside the heat insulation box.

In the above-mentioned refrigerator, the air flowing through the cold air pipe is generated by heat exchange with the cooler, and the cold air is ejected to the storage room. Thereby, the storage room is cooled. In addition, the refrigerant flowing out of the cooler flows into the reservoir and is separated by gas and liquid. At this time, since the reservoir is covered with a heat insulating material, the reservoir can be prevented from frosting, and the defrost time of the cooler can be shortened.

Patent Document 1: Japanese Patent Laid-Open No. 2001-116427 (pages 4 to 6, FIG. 1)

However, according to the conventional refrigerator described above, the entire reservoir is buried in the heat insulating material. Therefore, does the refrigerant leak from the welded portion between the storage portion of the reservoir and the inflow pipe, or between the storage portion and the outflow pipe? Out is not easy to check. In addition, when the cold coal leaks from the welded portion, the liquid reservoir cannot be repaired, so the entire heat insulation box becomes defective. Therefore, there is a problem that the manufacturing cost of the refrigerator increases.

An object of the present invention is to provide a refrigerator capable of reducing manufacturing costs.

In order to achieve the above object, the refrigerator of the present invention includes a heat-insulating box filled with a first heat-insulating material between the inner box and the outer box; a cooler to generate cold air; and a cold-air pipe provided in front of the inner box. And a cooler is provided; a hole portion is provided on the inner box; a reservoir is connected to the cooler and at least a portion is arranged behind the hole portion; and a cover body covers the hole portion; the liquid reservoir, It has: a storage section for storing refrigerant; a refrigerant inflow pipe connected to the storage section through a first welding section; and a refrigerant outflow pipe connected to the storage section through a second welding section; at least the first welding section and the second A space portion where the first heat insulating material is not filled is formed around the welding portion, and a communication hole communicating with the space portion is provided in the cover.

In the present invention, in the refrigerator configured as described above, the cover protrudes into the air-conditioning duct, and the reservoir is disposed across the front and rear of the hole portion.

In the present invention, in the refrigerator configured as described above, the cover has a flange portion that abuts on a back surface of the inner box.

In the present invention, in the refrigerator configured as described above, the air-conditioning duct has a cooler chamber in which the cooler is provided, and an upper passage extending from the cooler chamber in a narrow width upward; the cover has a cooling mechanism disposed in the cooler. The upper part of the device and the side wall are inclined to guide the cold air to the guide part of the upper passage.

Further, in the present invention, the refrigerator having the above-mentioned configuration is provided with a partition member that covers at least the rear of the first welding portion and the second welding portion and separates from the first heat insulating material.

In the present invention, in the refrigerator configured as described above, the partition member is formed in a sheet shape, covers the rear of the reservoir, and is adhered to the back of the cover.

In the present invention, in the refrigerator configured as described above, the partition member is formed in a plurality of sheets, one partition member covers the rear of the first welding portion and is adhered to the back surface of the cover, and the other partition The member covers the rear of the second welding portion and is adhered to the back of the cover.

In the present invention, in the refrigerator having the above configuration, a second heat-insulating material is disposed on the back surface of the cover.

In the present invention, in the refrigerator having the above configuration, the cover body and the partition member are formed of a resin molded product; a pair of upper shielding ribs are provided, and the cover body and the partition member respectively protrude from the cover body and the partition member, and are arranged in contact with each other. On the peripheral surface of the upper part of the storage part; and a pair of lower shielding ribs protruding from the cover body and the partition member to abut against each other and arranged on the peripheral surface of the lower part of the storage part; on the upper shielding rib and the lower part The first heat insulating material is filled between the shielding ribs.

In the present invention, in the refrigerator configured as described above, the liquid reservoir is made of copper.

In the present invention, in the refrigerator configured as described above, the refrigerant pipe extending from the cooler and the inflow pipe are welded to the front of the cover.

Further, in the present invention, the refrigerator having the above-mentioned configuration is provided with a plurality of the communication holes, and the third welding portion connecting the expander for decompressing the refrigerant to the cooler faces in front of one of the communication holes, A fourth welding portion connecting the cooler to the inflow pipe faces in front of the other communication hole.

Moreover, in the refrigerator of the said structure, the front surface of the said cover is provided with the rib part which covers the communication hole above.

In the present invention, in the refrigerator configured as described above, the communication hole is inclined so that the front side faces downward.

In the present invention, in the refrigerator configured as described above, the communication hole is blocked by a sheet that can be pressed by the opening.

According to the present invention, at least a part of the reservoir is arranged behind the hole portion provided in the inner box, and a space portion not filled with the first heat insulating material is formed around the first welding portion and the second welding portion. In addition, a cover that communicates with the space portion and covers the hole portion is provided. This makes it possible to easily check the refrigerant leakage of the first welding portion and the second welding portion through the communication hole. In addition, when a refrigerant leaks from the first welding portion or the second welding portion, a part of the cover body can be easily removed to repair the reservoir. Therefore, the manufacturing cost of the refrigerator can be reduced.

2d‧‧‧hole

10‧‧‧ reservoir

10a‧‧‧Storage Department

10b‧‧‧ Welding section (first welding section)

10c‧‧‧ Welding section (second welding section)

10d‧‧‧inflow pipe

10e‧‧‧Outflow tube

13‧‧‧ cover

13a‧‧‧Connecting hole

13b‧‧‧Connecting hole

13c‧‧‧burst

13d‧‧‧ protrusion

13e‧‧‧ opening

14‧‧‧ divider

15‧‧‧Insulation

33‧‧‧ Expander

FIG. 1 is a side sectional view showing a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a refrigeration cycle of the refrigerator according to the first embodiment of the present invention.

FIG. 3 is a perspective view of the vicinity of a liquid reservoir of the refrigerator according to the first embodiment of the present invention as viewed from the front.

FIG. 4 is a rear view of the vicinity of a liquid reservoir of the refrigerator according to the first embodiment of the present invention.

Fig. 5 is a sectional view taken along the line A-A in Fig. 4.

Fig. 6 is a sectional view taken along the line B-B in Fig. 4.

Fig. 7 is a rear view showing the vicinity of a liquid reservoir of a refrigerator according to a second embodiment of the present invention.

Fig. 8 is a perspective view showing the vicinity of a liquid reservoir of a refrigerator according to a second embodiment of the present invention.

Fig. 9 is a sectional view taken along the line C-C in Fig. 7.

Fig. 10 is a sectional view taken along the line D-D in Fig. 7.

FIG. 11 is a side sectional view showing a lid of a refrigerator according to a third embodiment of the present invention.

(First Embodiment)

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a side sectional view of a refrigerator 1 according to a first embodiment. The refrigerator 1 is provided with the main-body part 3 provided with the heat insulation box 2. The heat insulation box 2 is formed by filling a heat insulation material 2c made of a polyurethane foam between the outer box 2a and the inner box 2b.

A refrigerating compartment 4 is provided above the heat-insulating box 2, and a freezing compartment 5 is provided below the refrigerating compartment 4. The front surfaces of the refrigerating compartment 4 and the freezing compartment 5 are opened and closed by a heat insulation door 4a and a heat insulation door 5a, respectively. A machine room 11 is provided at a lower rear portion of the heat insulation box 2. The machine room 11 is provided with a compressor 31 that operates a refrigeration cycle 20 (see FIG. 2).

A cold air pipe 7 and a cold air pipe 8 communicated with each other through a damper (not shown) are provided in front of the inner box 2b. The cold air pipe 7 is provided between the back plate 7c of the refrigerating compartment 4 and the inner box 2b, and the cold air pipe 8 is provided between the back plate 8c of the freezing compartment 5 and the inner box 2b. A cooler chamber 9 in which a cooler 35 is arranged is provided at a lower portion of the cold air pipe 8, and an upper passage 8 d is extended above the cooler chamber 9 in a narrow and wide manner (see FIG. 3).

An air outlet 7a facing the refrigerator compartment 4 is opened in the air-conditioning duct 7. An air outlet 8a and a return port 8b facing the freezing compartment 5 are opened in the air-conditioning duct 8. A return passage (not shown) for returning the cold air flowing out of the refrigerating compartment 4 to the cooler 35 is provided.

FIG. 2 shows a refrigeration cycle 20 of the refrigerator 1. In the refrigeration cycle 20, the compressor 31, the condenser 32, the expander 33, the cooler 35, and the accumulator 10 are sequentially connected via a refrigerant pipe 30 to circulate a refrigerant such as isobutane.

The compressor 31 compresses the refrigerant, and the condenser 32 condenses the refrigerant compressed by the compressor 31. The expander 33 is formed by a capillary tube, and decompresses and expands the refrigerant after flowing out of the condenser 32. The expander 33 may be formed by an expansion valve.

The cooler 35 evaporates the refrigerant decompressed by the expander 33 by heat exchange with the cold air in the cooler chamber 9 (see FIG. 1). The accumulator 10 separates the gas refrigerant from the liquid refrigerant, preventing the The liquid refrigerant that cannot be completely vaporized by the compressor 35 is sucked into the compressor 31. In addition, the accumulator 10 prevents the compressor oil circulating in the refrigeration cycle 20 from being sucked by the compressor 31 in the form of a liquid flow.

3 and 4 show a perspective view and a rear view of the vicinity of the reservoir 10 as viewed from the front. 5 and 6 show A-A cross-sectional views and B-B cross-sectional views of FIG. 4. The inner box 2b is provided with a hole portion 2d covered by the cover 13 and the reservoir 10 is arranged across the front and rear of the hole portion 2d. In this embodiment, the hole portion 2d is formed larger in the horizontal direction than in the vertical direction, and is similar to the outer shape of the cover 13.

The reservoir 10 is formed of a metal such as copper or aluminum, and includes a storage portion 10a, an inflow pipe 10d, and an outflow pipe 10e. The inflow pipe 10d is connected to the lower end of the storage portion 10a that stores the liquid refrigerant through a welding portion 10b (first welding portion). The outflow pipe 10e is connected to the upper end of the storage portion 10a through a welding portion 10c (a second welding portion). The refrigerant pipe 30 connected to the outflow pipe 10e is connected to the compressor 31 (see FIG. 1) in the machine room 11 (see FIG. 1).

The cover 13 is formed of a resin molded product and is arranged above the cooler 35. The cover 13 includes a protruding portion 13d and a flange portion 13c. The protruding portion 13 d protrudes forward in the air-conditioning duct 8 and houses the front portion of the reservoir 10. The flange portion 13c extends from the peripheral edge of the protruding portion 13d, and abuts against the back surface of the inner box 2b. Since the back surface of the inner box 2b is pressurized when the heat insulation material 2c of the heat insulation box 2 is filled, the flange portion 13c can prevent the cover 13 from falling off when the heat insulation material 2c is filled. In addition, a heat-insulating material 15 (second heat-insulating material) made of expanded styrene or the like is disposed on the back surface of the protruding portion 13 d of the cover 13.

A partition member 14 is provided behind the reservoir 10. The partition member 14 is formed in a sheet shape, and is adhered to the back surface of the cover 13. At this time, the partition member 14 covers behind the welding portion 10b and the welding portion 10c, and separates the heat insulating material 2c from the heat insulating material 2c. Thereby, the space part 16 which is not filled with the heat insulating material 2c is formed between the partition member 14 and the cover body 13.

The upper passage 8d of the cold air pipe 8 extends upward from the cooler chamber 9 in a narrow width, and the cover 13 is disposed on the side of the upper passage 8d. Part of the lower side wall of the protruding portion 13d of the cover 13 faces The upper passage 8d is inclined upward to form a guide portion 13g that guides the cold air in the cooler chamber 9 to the upper passage 8d. The lower part of the upper passage 8d is provided with a curved wall 8e connected to the guide portion 13g. Thereby, the cool air can be smoothly guided to the narrow upper passage 8d, and the air supply efficiency of the refrigerator 1 can be improved.

An opening portion 13 e is provided on the upper portion of the lid body 13. The opening 13e is inserted through an expander 33 made of a capillary tube and an inflow tube 10d of the reservoir 10. Thereby, one end of the refrigerant pipe 30 of the cooler 35 is connected to the expander 33 through the welding portion 19 a (third welding portion) in the cooler chamber 9. In addition, the other end of the refrigerant pipe 30 of the cooler 35 is connected to the inflow pipe 10d through a welding portion 19b (fourth welding portion) in the cooler chamber 9.

A communication hole 13 a and a communication hole 13 b that communicate with the space portion 16 (see FIG. 3) are provided in the protruding portion 13 d of the cover 13. The lower communication hole 13a is arranged in front of the welding portion 10b, and the upper communication hole 13b is arranged in front of the welding portion 10c.

In the refrigerator 1 configured as described above, the air flowing through the cooler chamber 9 is heat-exchanged with the cooler 35 by the drive of the compressor 31 to generate cool air. The cold air generated by the cooler 35 flows through the cold air pipe 8 by the drive of a fan, and is discharged from the discharge port 8 a to the freezing compartment 5. The cold air discharged into the freezer compartment 5 returns to the cooler 35 through the return port 8b.

When the damper (not shown) is turned on, the cold air flows into the cold air pipe 7 and is ejected from the ejection outlet 7 a to the refrigerating compartment 4. The cold air sprayed into the refrigerator compartment 4 flows downward, and the inside of the refrigerator compartment 4 is cooled. After that, the cool air returns to the cooler 35 through a return passage (not shown).

Next, the manufacturing process of the heat insulation box 2 of this embodiment is demonstrated. First, the inner box 2b temporarily fixes the flange portion 13c of the lid 13 by an adhesive tape or the like, and the hole portion 2d is blocked. Next, one end of the expander 33 and the inflow pipe 10 d of the reservoir 10 are inserted through the opening 13 e of the lid 13. In addition, the other end of the expander 33 and the outflow pipe 10e of the reservoir 10 are inserted through an opening (not shown) facing the machine room 11 that is opened in the outer case 2a.

Next, the reservoir 10 is disposed facing the hole portion 2 d, and the partition member 14 covering the rear of the reservoir 10 is adhered to the back surface of the lid 13. Next, the outer box 2a is arranged around the inner box 2b, and a heat insulating material 2c is filled between the outer box 2a and the inner box 2b. As a result, the reservoir 10 is formed integrally with the heat-insulating box 2, and a space portion 16 is formed around the reservoir 10.

Since the rear of the reservoir 10 is buried inside the heat-insulating box 2, frost formation on the reservoir 10 can be suppressed. Thereby, the defrosting time of the cooler 35 can be shortened. In addition, since the heat insulating material 15 is provided in the cover 13, it is possible to further suppress frost formation on the reservoir 10 and prevent frost formation on the cover 13.

When the heat insulation material 2c is filled to form the heat insulation box 2, each refrigerant pipe 30 is connected by welding or the like to form a path of the refrigeration cycle 20 shown in FIG. 2. Thereafter, the refrigerant is sealed to form a refrigeration cycle 20.

Next, it is checked whether there is no leakage of the sealed refrigerant. Refrigerant leakage inspection is performed mainly at the joints of the components of the refrigeration cycle 20. In this embodiment, as an example, the welded portions 10b, 10c, 19a, and 19b are inspected. At this time, the welded portions 19 a and 19 b are exposed in the cooler chamber 9, so that leakage can be easily checked. However, since the welded portions 10 b and 10 c are covered by the cover 13, it is not easy to check for leaks.

However, in the present embodiment, since the communication hole 13a and the communication hole 13b are provided in the cover 13, the refrigerant leakage in the space portion 16 can be detected from the inside of the cooler chamber 9 through the communication hole 13a and the communication hole 13b. This makes it easy to detect the leakage of the refrigerant in the side welding portion 10b and the welding portion 10c.

In addition, when the refrigerant on the detection side welding portion 10b or the welding portion 10c leaks, the protruding portion 13d of the cover 13 is removed, so that the welding portion 10b or the welding portion 10c can be welded again, and the liquid storage chamber 10 can be easily repaired. At this time, the protruding portion 13d may be formed separately from the cover 13 in advance in a manner of removing the protruding portion 13d.

Alternatively, the welding portion 19a connecting the expander 33 and the cooler 35 may be disposed in front of the communication hole 13a, and the welding portion 19b connecting the cooler 35 and the inflow pipe 10d may be disposed in front of the communication hole 13b. Thereby, it is possible to detect the side of the refrigerant while leaking the refrigerant through the communication hole 13a on the side welding portion 10b. The refrigerant in the welded portion 19a leaked. In addition, the leakage of the refrigerant in the side welding portion 19b can be detected simultaneously with the leakage of the refrigerant in the side welding portion 10c through the communication hole 13b. Therefore, the number of steps for refrigerant leakage inspection can be reduced.

According to this embodiment, the reservoir 10 is disposed across the front and rear of the hole portion 2d provided in the inner box 2b, and an unfilled spacer is formed around the welding portion 10b (first welding portion) and the welding portion 10c (second welding portion). Space portion 16 of the hot material 2c. In addition, a cover 13 that covers the hole portion 2 d is provided with a communication hole 13 a and a communication hole 13 b that communicate with the space portion 16. This makes it possible to easily perform the refrigerant leakage inspection of the welded portion 10b and the welded portion 10c through the communication holes 13a and 13b. In addition, when the refrigerant leaks from the welding portion 10b or the welding portion 10c, a part of the cover 13 can be easily removed to repair the reservoir 10. Therefore, the manufacturing cost of the refrigerator 1 can be reduced.

In addition, the protruding portion 13d of the lid 13 projects into the air-conditioning duct 8, and the storage portion 10a is disposed across the front and rear of the hole portion 2d. Therefore, re-welding of the welding portion 10b or the welding portion 10c can be easily performed. In addition, the entire storage portion 10a may be disposed behind the hole portion 2d.

In addition, since the welding portion 10b and the welding portion 10c communicate with each other through the space portion 16, the communication hole may be provided at one place. However, when the communication hole 13a and the communication hole 13b are provided, the probe can be brought close to both the welding portion 10b and the welding portion 10c, so the detection accuracy of refrigerant leakage can be improved.

In addition, the lid 13 has a flange portion 13c that abuts on the back surface of the inner box 2b. This can prevent the lid 13 from falling off when the heat insulating material 2c is filled between the outer box 2a and the inner box 2b.

In addition, the cold air pipe 8 has an upper passage 8d extending from the cooler chamber 9 upward with a narrow width. Therefore, the cover 13 has a guide portion 13g disposed above the cooler 35 and having a side wall inclined to guide cold air to the upper passage 8d. Thereby, the air supply efficiency of the refrigerator 1 can be improved.

Moreover, since the partition member 14 which covers the welding part 10b and the welding part 10c behind, and isolates from the heat insulation material 2c is provided, the space part 16 can be formed easily. Moreover, you may cover the welding part 10b and the back of the welding part 10c individually by several partition members 14.

In addition, the partition member 14 is formed in a sheet shape and covers the rear of the reservoir 10 and is adhered to the back of the lid 13. This makes it possible to easily separate between the welding portion 10b and the heat insulating material 2c and between the welding portion 10c and the heat insulating material 2c.

In addition, since the heat-insulating material 15 is arranged on the back surface of the lid 13, it is possible to suppress frosting on the reservoir 10 and prevent frost from forming on the lid 13.

In addition, when the reservoir 10 is formed of copper, the welded portion 10b and the welded portion 10c can be easily welded again by brazing.

In addition, the refrigerant pipe 30 extending from the cooler 35 and the inflow pipe 10 d are connected to the front of the cover 13 through the welding portion 19 b. In addition, the expander 33 and the cooler 35 are connected through the welding portion 19 a in front of the cover 13. This makes it easy to detect the leakage of the refrigerant in the side welding portion 19b and the welding portion 19a.

In addition, it is preferable that the welding portion 19a faces the front of the communication hole 13a, and the welding portion 19b faces the front of the communication hole 13b. Thereby, the leakage of the refrigerant in the side welding portion 19a can be detected at the same time as the leakage of the refrigerant in the side welding portion 10b through the communication hole 13a. In addition, the refrigerant leakage of the side welding portion 19b can be detected at the same time as the refrigerant leakage of the side welding portion 10c through the communication hole 13b, and the number of steps of the refrigerant leakage inspection can be reduced.

(Second Embodiment)

Next, FIGS. 7 and 8 show a rear view and a perspective view of the vicinity of the reservoir 10 of the second embodiment as viewed from the back. In addition, FIGS. 9 and 10 show the C-C sectional view and the D-D sectional view of FIG. 7. For convenience of explanation, the same reference numerals are given to the same portions as those in the first embodiment shown in FIGS. 1 to 6 described above. In this embodiment, the structures of the lid body 13 and the partition member 14 are different from those of the first embodiment. The other parts are the same as those of the first embodiment.

The cover 13 and the partition member 14 are formed of a resin molded product. The cover 13 has an upper shielding rib 17a and a lower shielding rib 18a that protrude rearward. The partition member 14 includes an upper shielding rib 17b and a lower shielding rib 18b that protrude forward. The upper shielding rib 17a and the upper shielding rib 17b are in contact with each other. It is placed so as to surround the peripheral surface of the upper portion of the storage portion 10a. The lower shielding rib 18a and the lower shielding rib 18b are in contact with each other, and are arranged so as to surround the peripheral surface of the lower portion of the storage portion 10a.

The upper end portions of the lid 13 and the partition member 14 are formed in a semi-circular shape sandwiching the outflow tube 10e, and the lower end portions are formed in a semi-circular shape sandwiching the inflow tube 10d. An annular groove portion 13 h into which the partition member 14 is fitted is provided on the outer peripheral portion of the cover body 13. A plurality of locking holes 13i are provided on the outer wall of the groove portion 13h. The side wall 14 b of the partition member 14 is provided with a plurality of claw portions 14 c that are engaged with the locking holes 13 i. Thereby, the side wall of the partition member 14 is inserted into the groove portion 13 h, the claw portion 14 c is locked in the locking hole 13 i, and the partition member 14 is mounted on the cover 13.

An opening portion 14 a through which the reservoir 10 is exposed is provided in a central portion of the partition member 14. At both end portions of the opening portion 14a, a semi-annular upper shielding rib 17b and a lower shielding rib 18b that are in contact with the peripheral surface of the storage portion 10a are provided. In addition, the cover 13 is provided with a semi-annular upper shielding rib 17a and a lower shielding rib 18a that are in contact with the peripheral surface of the storage portion 10a. End surfaces in the circumferential direction of the upper shielding rib 17a and the lower shielding rib 18a are in contact with end surfaces in the circumferential direction of the upper shielding rib 17b and the lower shielding rib 18b, respectively.

When the heat-insulating box 2 is formed, the partition member 14 is mounted on the back of the lid 13 with the reservoir 10 interposed therebetween, and a heat-insulating material 2c is filled between the outer box 2a and the inner box 2b. At this time, the heat insulating material 2c is filled between the upper shielding rib 17a and the upper shielding rib 17b, the lower shielding rib 18a, and the lower shielding rib 18b through the opening 14a.

Thereby, the periphery of the storage part 10a is covered with the heat insulation material 2c, and the space part 16 is formed in multiple numbers corresponding to the welding part 10b and the welding part 10c. At this time, the lower space portion 16 communicates with the communication hole 13a, and the upper space portion 16 communicates with the communication hole 13b. Therefore, it is possible to easily check the refrigerant leakage of the welding portion 10b and the welding portion 10c through the communication hole 13a and the communication hole 13b.

According to this embodiment, the same effect as that of the first embodiment can be achieved. In addition, a heat insulating material 2c is filled between the upper shielding rib 17a and the upper shielding rib 17b and the lower shielding rib 18a and the lower shielding rib 18b. Thereby, the heat insulating material 15 (refer FIG. 3) can be omitted, and the manufacturing cost of the refrigerator 1 can be reduced. In addition, since the heat insulating material 2c made of foamed polyurethane has high heat insulation properties, it is possible to more reliably prevent frosting on the cover 13.

(Third Embodiment)

Next, FIG. 11 is a side cross-sectional view of the lid 13 of the refrigerator 1 according to the third embodiment. For convenience of explanation, the same reference numerals are given to the same portions as those in the first embodiment shown in FIGS. 1 to 6 described above. In this embodiment, the shape of the cover 13 is different from that of the first embodiment. The other parts are the same as those of the first embodiment.

Ribs 13f covering the communication holes 13a and 13b above the communication holes 13a are protruded from the front surface of the cover body 13, respectively. Thereby, dew condensation water can be prevented from entering the space portion 16 through the communication holes 13 a and the communication holes 13 b.

According to this embodiment, the same effect as that of the first embodiment can be achieved. In addition, it is possible to prevent the dew condensation water from entering the space portion 16 by the rib portion 13f.

In this embodiment, the rib portion 13f may be omitted, and the communication hole 13a and the communication hole 13b may be formed to be inclined forward and downward. This prevents the dew condensation water from entering the space portion 16.

In the first to third embodiments, when isobutane is used as the refrigerant, there may be a case where the cyclopentane mixed with the heat insulating material 2c made of foamed polyurethane is misdetected as the leakage of isobutane during the refrigerant leakage inspection . Therefore, the refrigerant in the refrigerating cycle 20 may be removed, and high-pressure nitrogen may be filled in the refrigerant pipe 30 to check for nitrogen leakage.

At this time, a suspicious welding portion is coated with a detection liquid such as soapy water. With this, refrigerant leakage can be detected by the presence or absence of foaming in the welded portion. In addition, when the communication hole 13a and the communication hole 13b are plugged by the sheet after the detection liquid is applied, the change of the sheet can be more easily detected.

According to this invention, it can be utilized for the refrigerator provided with a liquid reservoir.

This application claims priority based on Japanese Patent Application No. 2017-083638 for which it applied to Japan on April 20, 2017, and uses the content here.

Claims (6)

A refrigerator includes: a heat-insulating box filled with a first heat-insulating material between an inner box and an outer box; a cooler that generates cold air; a cold-air pipe provided in front of the inner box and configured with the cooler; a hole A liquid storage device connected to the cooler and at least a part of which is arranged behind the hole portion; and a cover body covering the hole portion; the liquid storage device has a storage portion for storing refrigerant A refrigerant inflow tube connected to the storage portion through a first welding portion; and a refrigerant outflow tube connected to the storage portion through a second welding portion; an unfilled portion is formed around at least the first welding portion and the second welding portion The space portion of the first heat insulation material is provided with a communication hole in the cover body that communicates with the space portion. The cover body protrudes into the air-conditioning duct, and the storage portion is disposed across the front and rear of the hole portion. A heat-insulating material is disposed on the back surface of the cover facing the storage portion. For example, the refrigerator according to the first item of the patent application, wherein the cover body has a flange portion abutting on a back surface of the inner box. For example, the refrigerator according to any one of claims 1 to 2 is provided with a partition member covering at least the rear of the first welding portion and the second welding portion and separating from the first heat insulating material. A refrigerator includes: a heat-insulating box filled with a first heat-insulating material between an inner box and an outer box; a cooler that generates cold air; a cold-air pipe provided in front of the inner box and configured with the cooler; a hole A liquid storage device connected to the cooler and at least a part of which is arranged behind the hole portion; and a cover body covering the hole portion; the liquid storage device has a storage portion for storing refrigerant A refrigerant inflow tube connected to the storage portion through a first welding portion; and a refrigerant outflow tube connected to the storage portion through a second welding portion; an unfilled portion is formed around at least the first welding portion and the second welding portion A space portion of the first heat insulation material, and a communication hole communicating with the space portion is provided in the cover, and is provided to cover at least the rear of the first welding portion and the second welding portion and to communicate with the first heat insulation material. The partition members are separated from each other, the partition members are formed in a sheet shape, cover the rear of the reservoir, and adhere to the back of the cover. For example, the refrigerator in the fourth scope of the patent application, wherein a second heat insulating material is arranged on the back surface of the cover. A refrigerator includes: a heat-insulating box filled with a first heat-insulating material between an inner box and an outer box; a cooler to generate cold air; a cold-air pipe provided in front of the inner box and configured with the cooler; holes A liquid storage device connected to the cooler and at least a part of which is arranged behind the hole portion; and a cover body covering the hole portion; the liquid storage device has a storage portion for storing refrigerant A refrigerant inflow tube connected to the storage portion through a first welding portion; and a refrigerant outflow tube connected to the storage portion through a second welding portion; an unfilled portion is formed around at least the first welding portion and the second welding portion A space portion of the first heat insulation material, and a communication hole communicating with the space portion is provided in the cover, and is provided to cover at least the rear of the first welding portion and the second welding portion and to communicate with the first heat insulation material. A partition member partitioned between the cover body and the partition member is formed of a resin molded product; a pair of upper shielding ribs are provided, and the cover body and the partition member respectively protrude from the cover body and the partition member and abut on each other and are arranged on the upper part of the storage portion Peripheral surface; and a pair of lower shades , From the cover and the partitioning member projections, respectively, abut on each other and disposed on the circumferential surface of the lower portion of the reservoir; shielding rib of the upper heat insulating material is filled between the first rib and the lower shield.