Evaporator and refrigerator

Abstract

Provided are an evaporator and a refrigerator capable of suppressing a decrease in cooling efficiency. The evaporator comprises a plurality of fins and a refrigerant pipe. The plurality of fins are arranged at intervals in the width direction. The refrigerant tube is in contact with the plurality of fins. At least one of a first fin located at one end in the width direction and a second fin located at the other end in the width direction among the plurality of fins includes a cutout portion.

Description

Technical Field

[0001] The present disclosure relates to an evaporator and a refrigerator. Background Art

[0002] A conventional refrigerator includes: an accumulator disposed near either the left or right side of an evaporator including a refrigerant tube and an end plate supporting the refrigerant tube; and a tube heater in contact with the end plate.

[0003] Japanese Patent Application Publication No. 2023-085669 discloses the above-mentioned conventional refrigerator. Summary of the invention Technical Problems to be Solved by the Invention

[0004] The evaporator provided in the refrigerator disclosed in Japanese Patent Application Laid-Open No. 2023-085669 may be covered with frost or the like resulting from condensation of moisture in the air, and the cooling efficiency of the refrigerator may be reduced.

[0005] An object of the present disclosure is to provide an evaporator and a refrigerator capable of suppressing a decrease in cooling efficiency. Technical solutions for solving technical problems

[0006] According to one aspect of the present disclosure, an evaporator includes a plurality of fins and a refrigerant tube. The plurality of fins are arranged at intervals from each other along a width direction. The refrigerant tube contacts the plurality of fins. At least one of a first fin at one side end in the width direction and a second fin at another side end in the width direction of the plurality of fins includes a cutout portion. Beneficial Effects

[0007] According to the present disclosure, it is possible to suppress a decrease in cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a front view of a cooling device according to one embodiment of the present disclosure. Figure 2 It is a perspective view of a cooling device according to an embodiment of the present disclosure. Figure 3 This is a perspective view of a portion of a cooling device according to an embodiment of the present disclosure. Figure 4 It is an enlarged view of the cooler of the cooling device. Figure 5 This is an enlarged view of a portion of the cross section of the cooling device along the front-rear direction. Figure 6 This is an enlarged view of a portion of the cross section along the width direction of the cooling device. Figure 7 This is a diagram of the evaporator and the cover as seen from the back side. Figure 8This is a diagram of the evaporator viewed from the right side. Fig. 9 This is a diagram of the evaporator viewed from the left. Fig.10 This is a diagram of the first fin as viewed from the right side. Fig.11 This is a diagram of the second fin as viewed from the left side. Fig.12 This is a diagram showing a first fin according to Modification 1 of the present embodiment. Fig.13 This is a diagram showing a first fin according to Modification 2 of the present embodiment. DETAILED DESCRIPTION

[0009] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In addition, the same reference numerals are given to the same or corresponding parts in the drawings, and their description will not be repeated.

[0010] [Implementation Method 1] Reference Figures 1 to 3 etc. to illustrate the display device 1 involved in the embodiment of the present invention. In addition, in the present invention, the cooling device 1 is a general term for a device that cools objects such as food. In the cooling device 1, for example, in addition to a freezer and a freezer having only a freezing chamber, there is also a refrigerator having a refrigerating chamber, etc. The freezing chamber is a general term for a room that cools the indoor temperature to below 0°C. The freezing chamber is preferably a room that supplies cold air at a temperature below -18°C. In the present embodiment, an example is described in which the cooling device 1 has a refrigerating chamber in addition to the freezing chamber. However, the present invention is not limited to this structure. For example, the cooling device 1 may also be a freezer having only a freezing chamber.

[0011] (Overview of Cooling Device 1) Figure 1 A cooling device 1 according to this embodiment of the present disclosure is shown. Figure 2 It is a perspective view of the cooling device 1 . Figure 3 A perspective view showing a part of the cooling device 1 is shown. Figure 4 is an enlarged view of the cooler 2 of the cooling device 1. In the following description, Figure 1 The horizontal direction of is set as the width direction of the refrigerator. Figure 1 The direction perpendicular to the paper is set as the depth direction of the refrigerator. Figure 1 The longitudinal direction of the refrigerator is set to the height direction or the vertical direction of the refrigerator. Figure 1 The lower side of the paper is set as "downward", and the upper side of the paper is set as "upward". In the depth direction, Figure 1 The inner side of the paper is set as the "back side" or "rear side", and the front side of the paper is set as the "front side".

[0012] like Figure 1 As shown, the cooling device 1 includes a housing 5. The housing 5 has heat insulation properties. A first refrigerating chamber 50, a second refrigerating chamber 40, a first freezing chamber 10, a second freezing chamber 20, and a third freezing chamber 30 are formed in the housing 5. The first freezing chamber 10 is equivalent to an example of a "cooling chamber". The first refrigerating chamber 50, the second refrigerating chamber 40, the first freezing chamber 10, the second freezing chamber 20, and the third freezing chamber 30 are isolated from each other by the housing 5.

[0013] The first refrigerating chamber 50 and the second refrigerating chamber 40 are spaces for refrigerating food, etc. "Refrigerating" means cooling down from room temperature within a temperature range higher than 0°C. At least one of the first refrigerating chamber 50 and the second refrigerating chamber 40 may be a so-called vegetable chamber suitable for storing vegetables.

[0014] The first freezing chamber 10, the second freezing chamber 20, and the third freezing chamber 30 are respectively spaces for freezing food. In the present embodiment, the first freezing chamber 10 disposed at the bottom has the largest capacity. The second freezing chamber 20 and the third freezing chamber 30 disposed on the upper side of the first freezing chamber 10 have smaller capacities than the first freezing chamber 10. At least one of the second freezing chamber 20 and the third freezing chamber 30 can be an ice-making chamber. In the present embodiment, specifically, the third freezing chamber 30 is an ice-making chamber, and the second freezing chamber 20 and the first freezing chamber 10 are spaces for freezing and storing food and the like.

[0015] (Cooler 2, cold air passage 25, blow-out ports 23a, 23b, 24) like Figure 2 As shown, a cooler 2 is disposed on the back side of the housing 5. The cooler 2 generates cold air. The cold air generated by the cooler 2 is supplied to each of the rooms 10, 20, 30, 40, 50, so that the interior of each of the rooms 10, 20, 30, 40, 50 is cooled.

[0016] The cooler 2 is not particularly limited as long as it can supply cold air. For example, it can be composed of a compressor, a condenser, an expander, an evaporator 21 ( Figure 6 The cooler 2 may also be provided with: a fan F1 for conveying cold air generated by the cooler 2; a defrost heater for melting frost attached to the evaporator 21; and a damper for opening and closing the cold air passage 25.

[0017] like Figure 3 and Figure 4As shown, a cold air passage 25 is provided on the housing 5, and the cold air passage 25 serves as an air guide for guiding the cold air from the cooler 2. The cold air passage 25 is provided on the back side of the freezing chamber 10, 20, 30. Specifically, the evaporator 21 and the cover 21C covering the evaporator 21 are arranged on the back side in the housing 5. The cold air passage 25 is formed by the back side in the housing 5 and the cover 21C.

[0018] Figure 5 This is an enlarged view of a part of the cross section of the cooling device 1 along the front-rear direction. Figure 5 It is viewed from the left side along Figure 3 FIG. 1 is a diagram showing a portion of a cross section taken along line VV. Figure 6 This is an enlarged view of a portion of the cross section of the cooling device 1 along the width direction. Figure 6 Viewed from the front Figure 3 FIG. 1 is a diagram showing a portion of a cross section taken along line VI-VI. Figure 7 This is a diagram showing the evaporator 21 and the cover 21C as viewed from the back side.

[0019] like Figures 4 to 7 As shown, the cover 21C is formed with a first blow-out port 23a, a second blow-out port 23b, a third blow-out port 24, a first blow-out port 26, and a second blow-out port 27 opening in the cooling chamber. The first blow-out port 23a, the second blow-out port 23b, the third blow-out port 24, the first blow-out port 26, and the second blow-out port 27 are respectively connected to the cold air passage 25. The cold air from the cooler 2 is respectively supplied to the first blow-out port 23a, the second blow-out port 23b, and the third blow-out port 24 via the cold air passage 25.

[0020] The first blow-out port 23a is located at the back side of the first freezer compartment 10. The first blow-out port 23a opens at the first freezer compartment 10. The first blow-out port 23a blows out the cold air supplied from the cooler 2 via the cold air passage 25 toward the first freezer compartment 10 (see arrow A1). The second blow-out port 23b is provided at a position higher than the first blow-out port 23a. The second blow-out port 23b opens at the third freezer compartment 30. The second blow-out port 23b blows out the cold air supplied from the cooler 2 via the cold air passage 25 toward the second freezer compartment 20 and the third freezer compartment 30 (see arrow A1).

[0021] The third outlet 24 is located at Figure 1 and Figure 2 The third outlet 24 opens in the second refrigerating chamber 40. The third outlet 24 blows out the cold air supplied from the cooler 2 via the cold air passage 25 toward the second refrigerating chamber 40 and the first refrigerating chamber 50 (see arrow A2). Therefore, the first outlet 23a, the second outlet 23b, and the third outlet 24 are all supplied with cold air from the cooler 2 via the common cold air passage 25.

[0022] The opening area of ​​the third outlet 24 is smaller than the first outlet 23a. The opening area of ​​the third outlet 24 is preferably 30% to 90% of the opening area of ​​the first outlet 23a, and more preferably 40% to 80%.

[0023] Generally, the flow rate of cold air blown out from the outlet depends on the opening area of ​​the outlet. Therefore, in the cooling device 1 in which the opening area of ​​the first outlet 23a is larger than the opening area of ​​the third outlet 24, the flow rate of cold air blown out from the first outlet 23a to the first freezing chamber 10 is greater than the flow rate of cold air blown out from the third outlet 24 to the second refrigerating chamber 40 and the first refrigerating chamber 50.

[0024] Similarly, the second outlet 23b is also smaller than the first outlet 23a. The opening area of ​​the second outlet 23b is preferably more than 30% and less than 90% of the opening area of ​​the first outlet 23a, and more preferably more than 40% and less than 80%. The flow rate of cold air blown out from the first outlet 23a to the first freezer 10 is greater than the flow rate of cold air blown out from the second outlet 23b to the second freezer 20 and the third freezer 30.

[0025] When the damper is in the open state, the cold air passage 25 is open. Therefore, when the damper is in the open state, the air blown by the fan F1 is supplied to each cooling chamber through the cold air passage 25, specifically, to the first freezing chamber 10, the second freezing chamber 20, the third freezing chamber 30, the first refrigerating chamber 50, and the second refrigerating chamber 40. On the other hand, when the damper is in the closed state, the cold air passage 25 is closed. Therefore, when the damper is in the closed state, the cold air passage 25 becomes a non-open state, and cold air cannot be supplied to each cooling chamber in essence.

[0026] The cold air blown out from the first blowing outlet 23a returns to the cold air passage 25 via the first freezing chamber 10. The cold air blown out from the second blowing outlet 23b returns to the cold air passage 25 via the second freezing chamber 20 and the third freezing chamber 30. The first blowing inlet 26 blows the cold air after passing through the first freezing chamber 10, the second freezing chamber 20 and the third freezing chamber 30 into the air passage 25 (see arrow B1). The cold air blown out from the third blowing outlet 24 returns to the cold air passage 25 via the second refrigerating chamber 40 and the first refrigerating chamber 50. The second blowing inlet 27 blows the cold air through the second refrigerating chamber 40 and the first refrigerating chamber 50 into the cold air passage 25 (see arrow B2).

[0027] The cover 21C is provided with a cold air passage 25. The cold air passage 25 includes a placement portion 25A on which the evaporator 21 is placed and a flow path portion 25B connected to the placement portion 25A. The placement portion 25A is provided with a first blow-out port 23a, a second blow-out port 23b, a third blow-out port 24, and a first blow-out port 26 ( Figure 5 and Figure 6The flow path portion 25B is formed on the right side of the configuration portion 25A. The flow path portion 25B extends in the up-down direction. The flow path portion 25B has a first blowing inlet 26 formed at the upper end and a blowing outlet 25C formed at the lower end. The blowing outlet 25C blows the cold air blown in from the first blowing inlet 26 and through the flow path portion 25B toward the configuration portion 25A.

[0028] In the arrangement portion 25A, the cold air blown in from the first blowing port 26 and the cold air blown out from the blowing port 25C are guided from the bottom to the top by the fan F1. A part of the cold air guided by the arrangement portion 25A passes through the space R1 between the flow path portion 25B on the right side of the evaporator 21 and the evaporator 21 (see arrow C1). Another part of the cold air guided by the arrangement portion 25A passes through the space R2 on the left side of the evaporator 21 (see arrow C2). The rest of the cold air guided by the arrangement portion 25A passes through the evaporator 21 (see arrow C3).

[0029] [Evaporator] Figure 8 This is a diagram of the evaporator 21 as viewed from the right side. Fig. 9 This is a diagram of the evaporator 21 as viewed from the left side.

[0030] The evaporator 21 includes a plurality of fins 211 and a refrigerant tube 212. The refrigerant flows inside the refrigerant tube 212. The plurality of fins 211 are arranged at intervals from each other along the width direction. Each of the plurality of fins 211 is, for example, a thin plate having a substantially flat shape. The plurality of fins 211 is in contact with the refrigerant tube 212. Figures 7 to 9 In the figure, only one fin is marked with the reference numeral "211". Specifically, the refrigerant tube 212 passes through the plurality of fins 211 in the width direction and meanders in the up-down direction and the front-back direction. The first fin 211A is located at an end of one side in the width direction of the plurality of fins 211. The second fin 211B is located at an end of the other side in the width direction of the plurality of fins 211. In the present embodiment, one side in the width direction is the right side. The other side in the width direction is the left side.

[0031] Generally speaking, the refrigerant flowing in the refrigerant tube 212 is lower in temperature than the cold air guided by the configuration portion 25A. Therefore, when the cold air passes through the refrigerant tube 212, the refrigerant takes away the heat of the cold air and evaporates. As a result, the cold air is further cooled. The cold air guided by the configuration portion 25A contains moisture because it has passed through each chamber 10, 20, 30, 40, and 50. Therefore, the cold air is cooled by the refrigerant, and the moisture contained in the cold air condenses and adheres to the evaporator 21 in the form of water droplets or ice particles. In the evaporator 21, the surface side of the evaporator 21 having a large surface area in contact with the cold air is more prone to condensation. Specifically, the right side surface of the first fin 211A and the left side surface of the second fin 211B among the multiple fins 211 are more prone to condensation. When ice particles adhere to the right side of the first fin 211A or the left side of the second fin 211B, the passage of the cold air in the space R1 or the space R2 becomes narrower, and the cold air is less likely to hit the refrigerant pipe 212 located in the space R1 or the space R2. As a result, the cold air is difficult to cool, and the cooling efficiency of the cooling device 1 deteriorates.

[0032] At least one of the first fin 211A and the second fin 211B includes a cutout portion 230. In the present embodiment, each of the first fin 211A and the second fin 211B includes a cutout portion 230.

[0033] If the notch 230 is provided in at least one of the first fin 211A and the second fin 211B, moisture contained in the cold air passing through the space R1 or the space R2 is likely to condense in the portion other than the notch 230. As a result, the amount of moisture contained in the cold air passing through the space R1 or the space R2 is reduced and dried, and condensation is unlikely to occur in the portion corresponding to the notch 230. Therefore, in the space R1 or the space R2, the passage of the cold air can be ensured, and the cooling efficiency of the cooling device 1 can be maintained.

[0034] Fig.10 This is a diagram of the first fin 211A as viewed from the right side. Fig.11 This is a diagram of the second fin 211B as viewed from the left side. In each of the first fin 211A and the second fin 211B, the cutout portion 230 extends in the height direction.

[0035] Thus, by providing the notch 230 across a portion of the first fin 211A and the second fin 211B in the front-rear direction, a region where condensation is difficult to form is formed in a portion of the first fin 211A and the second fin 211B in the front-rear direction. As a result, a passage for cool air can be ensured in the front-rear direction.

[0036] The first fin 211A includes a portion A11 located on one side of the cutout portion 230 and a portion B11 located on the other side in the front-to-back direction. In the present embodiment, one side in the front-to-back direction is the front side. The other side in the front-to-back direction is the rear side. The first fin 211A includes a connecting portion 220A connecting the portion A11 and the portion B11. The connecting portion 220A extends in the front-to-back direction. As an example, the connecting portion 220A has a dimension LVA along the front-to-back direction. The portion A11 and the portion B11 extend upward from the connecting portion 220A. As an example, the portion A11 has a dimension LV11 along the front-to-back direction. The portion B11 has a dimension LV12 along the front-to-back direction. The cutout portion 230 has a dimension LV13 along the front-to-back direction. That is, the total dimension of the portion A11 and the portion B11 in the front-to-back direction is shorter than the dimension of the first fin 211A in the front-to-back direction.

[0037] The second fin 211B includes a portion A21 located on one side of the cutout portion 230 in the front-to-back direction and a portion B21 located on the other side. The second fin 211B includes a connecting portion 220B connecting the portion A21 and the portion B21. The connecting portion 220B extends in the front-to-back direction. As an example, the connecting portion 220B has a dimension LVB in the front-to-back direction. The portion A21 and the portion B21 extend upward from the connecting portion 220B. As an example, the portion A21 has a dimension LV21 in the front-to-back direction. The portion B21 has a dimension LV22 in the front-to-back direction. The cutout portion 230 has a dimension LV23 in the front-to-back direction. That is, the total dimension of the portion A21 and the portion B21 in the front-to-back direction is shorter than the dimension of the second fin 211B in the front-to-back direction.

[0038] For example, in the second fin 211B, the portion A21 and the portion B21 are provided on both sides of the cutout portion 230 , thereby preventing moisture from condensing on a portion of each connection portion 220B corresponding to the cutout portion 230 located between the portion A21 and the portion B21 .

[0039] As a result, ice particles formed by condensation of water easily adhere to the portion A21 and the portion B21, but are difficult to adhere to the portion between the portion A21 and the portion B21, which is closer to the inside than the two ends in the width direction. This makes it easier to ensure a passage for cold air at the position closer to the inside than the two ends in the width direction. As a result, cold air easily hits the refrigerant pipe 212 located closer to the inside than the two ends in the width direction, and the reduction in the cooling efficiency of the cooling device 1 can be suppressed.

[0040] The area of ​​the portion of the first fin 211A provided with the cutout 230 in the height direction is different from the area of ​​the portion of the second fin 211B provided with the cutout 230 in the height direction. As a result, ice particles formed by condensation of water are easily attached to the fins with a larger area of ​​the portion of the first fin 211A and the second fin 211B provided with the cutout 230. As a result, the cold air introduced to the side of the fin with a smaller area of ​​the portion of the first fin 211A and the second fin 211B provided with the cutout 230 is dry, and ice particles formed by condensation of water are less likely to adhere to the fin with a smaller area of ​​the portion of the cutout 230. As a result, the cold air easily hits the refrigerant tube 212 located on the side of the fin with a smaller area of ​​the portion of the first fin 211A and the second fin 211B provided with the cutout 230, and the reduction in the cooling efficiency of the cooling device 1 can be suppressed.

[0041] For example, Fig.10 As shown, the first fin 211A has a front end E11 and a rear end E12. The area of ​​the portion A11 of the first fin 211A is calculated by multiplying the dimension LV11 in the front-to-back direction by the height dimension of the portion of the first fin 211A provided with the cutout portion 230, that is, the dimension LH11 of the front end E11. The area of ​​the portion B11 of the first fin 211A is calculated by multiplying the dimension LV12 in the front-to-back direction by the dimension LH12 of the rear end E12, which is the height dimension of the portion of the first fin 211A provided with the cutout portion 230. Therefore, the area of ​​the portion of the first fin 211A provided with the cutout portion 230 is calculated by the sum of the area of ​​the portion A11 and the area of ​​the portion B11.

[0042] On the other hand, Fig.11 As shown, the area of ​​the portion A21 of the second fin 211B is calculated by multiplying the dimension LV21 in the front-to-back direction by the dimension LH21 which is the height dimension of the portion of the second fin 211B provided with the cutout portion 230. The area of ​​the portion B21 of the second fin 211B is calculated by multiplying the dimension LV22 in the front-to-back direction by the dimension LH22 which is the height dimension of the portion of the second fin 211B provided with the cutout portion 230. Therefore, the area of ​​the portion of the second fin 211B provided with the cutout portion 230 is calculated by the sum of the area of ​​the portion A21 and the area of ​​the portion B21.

[0043] As an example, the height dimension LH21 of the portion of the first fin 211A provided with the cutout 230 is different from the height dimension LH22 of the portion of the second fin 211B provided with the cutout 230. Thus, the areas of the portions provided with the cutout 230 can be made different between the first fin 211A and the second fin 211B in different ways. Specifically, when the dimension LV11 of the first fin 211A is the same as the dimension LV21 of the second fin 211B, and the dimension LV12 of the first fin 211A is the same as the dimension LV22 of the second fin 211B, if the dimensions LH11 and LH21 are made different from the dimensions LH12 and LH22, respectively, the area of ​​the portion of the first fin 211A provided with the cutout 230 is different from the area of ​​the portion of the second fin 211B provided with the cutout 230 in the height direction.

[0044] In the present embodiment, the first fin 211A is located closer to the outlet 25C for cold air from each cooling chamber than the second fin 211B. The area of ​​the first fin 211A is larger than that of the second fin 211B. By making the area of ​​the first fin 211A located on the side of the outlet 25C for blowing cold air containing moisture through each cooling chamber larger than that of the second fin 211B, ice particles of moisture condensation are easily attached to the first fin 211A. As a result, the cold air guided to the second fin 211B side of the first fin 211A and the second fin 211B is dried, and ice particles of moisture condensation are difficult to attach to the second fin 211B. As a result, the cold air easily hits the refrigerant pipe 212 located on the side of the second fin 211B, which can suppress the reduction of the cooling efficiency of the cooling device 1.

[0045] Furthermore, the second fin 211B may be located closer to the air outlet 25C than the first fin 211A, and the area of ​​the fin located near the air outlet 25C of the first fin 211A and the second fin 211B may be smaller than the area of ​​the other fin.

[0046] like Fig.10 As shown, the first fin 211A and the second fin 211B have a holding portion 241A and a holding portion 241B, respectively. The holding portion 241A and the holding portion 241B hold the heater 240, and the heater 240 generates heat to heat the inside of the arrangement portion 25A. When the inside of the arrangement portion 25A is heated by the heater 240, the cold air guided in the arrangement portion 25A is also heated. As a result, the ice particles attached to the evaporator 21 become easy to melt.

[0047] By providing the holding portion 241A and the holding portion 241B on the first fin 211A and the second fin 211B, the evaporator 21 can be configured compactly.

[0048] The heater 240 has, for example, a cylindrical shape extending in the width direction. The holding portion 241A holds one end of the heater 240 , and the holding portion 241B holds the other end of the heater 240 .

[0049] Fig.11 In the first fin 211A, the dimension LV14 of the holding portion 241A in the front-to-back direction is larger than the dimension of the portion provided with the cutout portion 230 in the front-to-back direction. Specifically, the dimension LV14 is larger than the sum of the dimensions LV11 and LV12, which is the sum of the dimensions of the portion A11 and the portion B11 in the front-to-back direction.

[0050] Thus, the holding portion 241A and the holding portion 241B can hold the heater 240 in a more stable posture.

[0051] like Figure 6 as well as Figure 8 As shown in FIG. 1 , the center J1 of the holding portion 241A and the holding portion 241B in the width direction is located at a position different from the center J2 in the width direction of the entire evaporator 21. Therefore, the heater 240 mainly heats the position on the right or left side of the center J2. As a result, the outer side of the first fin 211A or the outer side of the second fin 211B of the evaporator 21 is efficiently heated, and ice particles attached to the outer surface of the first fin 211A and the outer surface of the second fin 211B become easy to melt.

[0052] Specifically, the holding portion 241A is disposed at a position bent to the right in the width direction relative to the connecting portion 220A. The holding portion 241B is disposed at a position bent to the right in the width direction relative to the connecting portion 220B. The distance in the width direction between the holding portion 241A and the connecting portion 220A and the distance in the width direction between the holding portion 241B and the connecting portion 220B may be the same or different.

[0053] The following describes a modified example of the embodiment of the present disclosure. In the following description, components having substantially the same functions as the components described in the present embodiment are referred to by common reference numerals, and the description in the present embodiment is cited. In the modified example, only the parts that are different from the present embodiment are described, and the description of the present embodiment is cited for the other parts.

[0054] [Modification 1] Fig.121 is a diagram showing a first fin 211C according to a first modification example of the present embodiment. The first fin 211C according to the first modification example 1 has a portion A31 and a portion B31 instead of the portion A11 and the portion B11 of the first fin 211A according to the present embodiment, and has a front end E31 and a rear end E32 instead of the front end E11 and the rear end E12 of the first fin 211A according to the present embodiment.

[0055] The length of the front end E31 in the vertical direction is longer than the length of the rear end E32 in the vertical direction. Therefore, the portion A31 including the front end E31 is more likely to have ice particles formed by condensation attached to it than the portion B31 including the rear end E32. As a result, the cold air guided to the rear end E32 side is drier than that of the front end E31, and ice particles formed by condensation are less likely to adhere to the rear end E32.

[0056] Specifically, the portion A31 has a dimension LV31 along the front-to-back direction. The dimension LV31 is the same as the dimension LV11 of the portion A11 of the first fin 211A involved in this embodiment along the front-to-back direction. Similarly, the portion B31 has a dimension LV32 that is the same as the dimension LV22 of the portion B21. The cutout portion 230 has a dimension LV23 along the front-to-back direction. In addition, the front end E31 has a dimension LH31 as a height dimension. The dimension LH31 may be the same as or different from the dimension LH11. The rear end E32 has a dimension LH32 that is shorter than the dimension LH31.

[0057] In variant example 1 of the present embodiment, the shape of the first fin 211C of the evaporator 21 is different from the first fin 211A involved in the present embodiment, but the shape of the second fin of the evaporator 21 is different from the shape of the second fin 211B involved in the present embodiment, and can also have the same shape as the first fin 211A.

[0058] [Modification 2] Fig.13 1 is a diagram showing a first fin 211D of Modification 2 of the present embodiment. The first fin 211D of Modification 2 includes a portion A41 instead of the portion A11 and the portion B11 of the first fin 211A of the present embodiment.

[0059] The first fin 211D includes, as the cutout portion 230 , a cutout portion 230A located on one side of the portion A41 and a cutout portion 230B located on the other side in the front-rear direction.

[0060] Specifically, the portion A41 has a dimension LV41 along the front-to-back direction and a dimension LH41 as a height dimension. The cutout portion 230A has a dimension LV23A along the front-to-back direction. The cutout portion 230B has a dimension LV23B along the front-to-back direction. The total dimension of the dimension LV41, the dimension LV23A, and the dimension LV23B is the same as the dimension of the first fin 211D along the front-to-back direction.

[0061] By providing the cutout 230A on one side of the portion A41 in the front-to-back direction and the cutout 230B on the other side of the portion A41 in the front-to-back direction, ice particles formed by condensation of water are easily attached to the portion A41 located between the cutout 230A and the cutout 230B. As a result, the cold air guided to the cutout 230A side and the cutout 230B side is drier than that of the portion A41, and ice particles formed by condensation of water are less likely to adhere to the cutout 230A and the cutout 230B. Thus, the passage of cold air can be ensured on both sides of the portion A41 in the front-to-back direction, and the passage of cold air on the outer side of the first fin 211D is not easily narrowed.

[0062] Above, the embodiments of the present disclosure are described with reference to the accompanying drawings. However, the present disclosure is not limited to the above-mentioned embodiments, and can be implemented in various ways without departing from the main purpose thereof. In addition, various disclosures can be formed by appropriately combining the multiple constituent elements disclosed in the above-mentioned various modified examples. For example, several constituent elements can be deleted from all the constituent elements shown in the embodiment. In addition, the constituent elements of different modified examples can also be appropriately combined. In the accompanying drawings, for easy understanding, each constituent element is schematically shown as a main body, and for the convenience of drawing, the thickness, length, quantity, etc. of each constituent element shown in the figure may be different from the actual one. In addition, the material, shape, size, etc. of each constituent element shown in the above-mentioned embodiment is only an example, and is not particularly limited. Various changes can be made within the scope of the composition that does not substantially depart from the present disclosure.

Claims

1. An evaporator, characterized in that: include: A plurality of fins are arranged at intervals from each other along the width direction; as well as a refrigerant tube in contact with the plurality of fins, Among the plurality of fins, at least one of a first fin located at one side end in the width direction and a second fin located at the other side end in the width direction includes a cutout portion.

2. The evaporator according to claim 1, characterized in that The cutout portion of at least one of the first fin and the second fin extends in a height direction.

3. The evaporator according to claim 1 or 2, characterized in that: At least one of the first fin and the second fin includes a portion located on one side of the cutout portion and a portion located on the other side in the front-rear direction.

4. The evaporator according to claim 3, characterized in that At least one of the first fin and the second fin includes a front end and a rear end, The length of the front end portion in the up-down direction is longer than the length of the rear end portion in the up-down direction.

5. The evaporator according to claim 2, characterized in that An area of ​​a portion of the first fin in which the cutout portion is provided in the height direction is different from an area of ​​a portion of the second fin in which the cutout portion is provided in the height direction.

6. The evaporator according to claim 2 or 5, characterized in that: The height dimension of a portion of the first fin provided with the cutout portion and the height dimension of a portion of the second fin provided with the cutout portion are different from each other.

7. The evaporator according to claim 5, characterized in that The first fin is located closer to the outlet of the cold air from the cooling chamber than the second fin is. The area of ​​the first fin is larger than the area of ​​the second fin.

8. The evaporator according to claim 1, characterized in that The first fin and the second fin each have a holding portion that holds a heater.

9. The evaporator according to claim 8, characterized in that In at least one of the first fin and the second fin, a dimension of the holding portion in the front-to-back direction is larger than a dimension of a portion provided with the cutout portion in the front-to-back direction.

10. The evaporator according to claim 8, characterized in that The centers of the holding portion of the first fin and the holding portion of the second fin in the width direction are located at positions different from the center of the entire evaporator in the width direction.

11. A refrigerator, characterized in that: The evaporator comprises the evaporator according to claim 1.

Images