WO2020173357A1

WO2020173357A1 - Refrigerator having two-stage evaporator

Info

Publication number: WO2020173357A1
Application number: PCT/CN2020/075884
Authority: WO
Inventors: 曹东强; 刘山山; 刘昀曦; 朱小兵; 刘建如
Original assignee: 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2019-02-26
Filing date: 2020-02-19
Publication date: 2020-09-03
Also published as: CN111609620B; CN111609620A

Abstract

A refrigerator, comprising: a box body (110), which is internally defined with a cooling chamber (150) located below and at least one storage compartment located above the cooling chamber (150); an evaporator (200), which is disposed in the cooling chamber (150), configured to cool an air flow entering the cooling chamber (150), and has a first evaporator part (210) and a second evaporator part (220); and a water receiving tray (400), which is disposed below the evaporator (200), and has a first inclined part (401), a second inclined part (402) and a drainage port (403), the drainage port (403) being provided at the bottom of the intersection of the first inclined part (401) and the second inclined part (403), wherein the first evaporator part (210) is arranged abutting against the first inclined part (401), and the second evaporator part (220) is arranged abutting against the second inclined part (402). The present refrigerator may increase the length of the evaporator (200) and increase the heat exchange area. At the same time, the refrigerator may fully utilize the space of the water receiving tray (400) and increase the effective volume of the compartment.

Description

Refrigerator with two-stage evaporator

Technical field

The present invention relates to the technical field of refrigeration and freezing devices, and in particular to a refrigerator. Background technique

For common air-cooled refrigerators, the evaporator compartment is generally installed at the rear of the freezer compartment, and the evaporator, defrosting device, and air blower are installed in the evaporator compartment, separated from the freezer compartment by the air duct cover. Come. Since the evaporator itself, the air supply fan, and the air duct composed of the front and rear cover plates of the air duct have a large thickness, they occupy the space at the rear of the compartment, which greatly reduces the usable volume of the compartment. At the same time, in order to allow the defrosting water to flow out smoothly, the drain pan is usually designed as a funnel. The existing refrigerator does not utilize this part of the space and loses the effective volume. Summary of the invention

An object of the present invention is to provide an ice box that can effectively utilize the funnel-shaped space of the drip tray.

A further object of the present invention is to improve the heat exchange efficiency of the evaporator.

In particular, the present invention provides a refrigerator, including:

A box, which defines a cooling chamber located below and at least one storage compartment located above the cooling chamber;

The evaporator is arranged in the cooling chamber, is configured to cool the airflow entering the cooling chamber, and has a first evaporator part and a second evaporator part; and

The water receiving pan is arranged under the evaporator and has a first inclined portion, a second inclined portion and a drain port, and a drain port is opened at the intersection of the bottom of the first inclined portion and the second inclined portion; wherein

The first evaporator part is arranged against the first inclined part, and the second evaporator part is arranged against the second inclined part.

Optionally, the at least one storage compartment includes a freezing compartment; the front side of the cooling compartment is formed with at least one refrigerating return air opening communicating with the freezing compartment; and the top of the first inclined portion is arranged close to the refrigerating return air opening, so that the freezing compartment The return air flow from the chamber enters the cooling chamber through the refrigerated return air port and passes through the first evaporator part and the second evaporator part in sequence for cooling.

Optionally, there is a gap between the first evaporator part and the second evaporator part, and the gap defines The air rectification zone, so that the return air flow is cooled by the first evaporator part and mixed in the air rectification zone before reaching the second evaporator part.

Optionally, the width of the air rectification zone is 15 mm.

Optionally, the refrigerator further includes: a top cover plate, which is arranged above the evaporator and has a first inclined surface and a second inclined surface; the first inclined surface is arranged corresponding to the first inclined portion, and the first evaporator portion is arranged between the two; The second inclined surface is arranged corresponding to the second inclined portion, and a second evaporator portion is arranged between the two.

Optionally, the top cover plate is respectively provided with grooves on the left and right sides of the bottom; one end of the groove extends to cover the air rectification area, and the other end extends to cover a part of the second evaporator part, so that the air rectification The zone-mixed return air flow uniformly passes through the second evaporator section.

Optionally, the evaporator has a coil and a plurality of fins passing through the coil, wherein the distance between adjacent fins of the first evaporator part is greater than the distance between adjacent fins of the second evaporator part.

Optionally, the distance between adjacent fins of the first evaporator part is 7 mm.

Optionally, the first evaporator part includes a first part located at the front part and a second part located at the rear part; the first part is close to the refrigerating return air outlet, and the distance between adjacent fins of the first part is greater than that of adjacent fins of the second part Pitch.

Optionally, the distance between adjacent fins of the second evaporator part is 4 mm.

In the refrigerator of the present invention, the effective volume of the compartment is increased after the evaporator is placed at the bottom, and the evaporator is designed as a first evaporator part and a second evaporator part according to the first inclined part and the second inclined part of the drain pan. In part, this structure can increase the length of the evaporator, increase the heat exchange area, and at the same time make full use of the water tray space, and increase the effective volume of the compartment.

Furthermore, the refrigerator of the present invention is formed with a refrigerating return air outlet communicating with the freezer compartment on the front side of the cooling chamber, and the top of the first inclined portion is arranged close to the refrigerating return air outlet, so that the return air flow of the freezer compartment passes through the refrigerating return air outlet Enter the cooling chamber and pass through the first evaporator part and the second evaporator part in order for cooling.

Further, the refrigerator of the present invention defines an air rectification zone by providing a gap between the first evaporator part and the second evaporator part, so that the return air flow can be mixed in the air rectification zone after being cooled by the first evaporator part. , The pressure tends to a stable value, and then reaches the second evaporator part, so that the wind speed passing through the first evaporator part is more uniform, and the heat exchange efficiency of the refrigerated evaporator is higher.

Further, the distance between adjacent fins of the first evaporator part of the refrigerator of the present invention is greater than the distance between adjacent fins of the second evaporator part, which can prevent the formation of frost blocking on the fins of the first evaporator part. , Resulting in air unable to enter the second evaporator section. Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will better understand the above and other objectives, advantages and features of the present invention. Description of the drawings

Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary but not restrictive manner with reference to the accompanying drawings. The same reference numerals in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic cross-sectional view of a refrigerator according to an embodiment of the present invention.

Fig. 2 is a partial schematic perspective view of the refrigerator shown in Fig. 1.

Fig. 3 is a schematic plan view of the freezing evaporator of the refrigerator shown in Fig. 1.

Fig. 4 is a schematic top view of the top cover of the refrigerator shown in Fig. 1.

Fig. 5 is a schematic cross-sectional view of the top cover plate of the refrigerator shown in Fig. 4 along the line A-A.

Fig. 6 is a partial schematic cross-sectional view of the refrigerator shown in Fig. 4 along the line A-A.

Fig. 7 is a schematic cross-sectional view of the top cover plate of the refrigerator shown in Fig. 4 along the line B-B.

Fig. 8 is a partial schematic cross-sectional view of the refrigerator shown in Fig. 4 along the line B-B.

Fig. 9 is a wind speed distribution diagram of a refrigerator according to an embodiment of the present invention.

Figure 10 is a diagram of the wind speed distribution of the refrigerator when the top cover has no grooves.

Fig. 11 is a schematic bottom view of a refrigerator according to an embodiment of the present invention.

Fig. 12 is a perspective schematic view of the main components of the compressor compartment of the refrigerator shown in Fig. 11.

Fig. 13 is a perspective schematic view of the compressor compartment of the refrigerator shown in Fig. 11. detailed description

Fig. 1 is a schematic cross-sectional view of a refrigerator 100 according to an embodiment of the present invention. Fig. 2 is a partial schematic perspective view of the refrigerator 100 shown in Fig. 1. Fig. 3 is a schematic top view of the freezing evaporator 200 of the refrigerator 100 shown in Fig. 1 (the air return vent is not shown in the figure). In the following description, "front",

The directions or positional relationships indicated by "rear", "up", "down", "left", "right", etc. are based on the reference of the refrigerator itself, and "front" and "rear" are as indicated in Figure 1 direction.

The refrigerator 100 of the embodiment of the present invention may generally include a box body 110. The box body 110 includes an outer shell and a storage liner arranged inside the outer shell. The space between the outer shell and the storage liner is filled with heat preservation material (forms a foam layer), and the storage liner defines a storage compartment. In an embodiment, the storage compartment includes: a refrigerating compartment 120, a temperature-changing compartment 130, a freezing compartment 140, and a cooling compartment 150 is formed below the box 110. The front side of the refrigerating compartment 120 is provided with a first rotating door 160 to open or close the refrigerating compartment 120. A plurality of partitions 121 are provided inside the refrigerating compartment 120 to divide the refrigerated storage space into several parts, and a refrigerating drawer 122 is also provided under the lowest partition 121. A refrigerating air duct 123 is formed at the rear wall of the refrigerating compartment 120. The refrigerating air duct 123 has a refrigerating air outlet communicating with the refrigerating compartment 120, and a refrigerating evaporator 125 and a refrigerating air blower 124 are provided in the refrigerating air duct 123.

A pull-out door 170 is provided on the front side of the temperature-variable compartment 130, in which a temperature-variable drawer 131 is placed. A temperature-variable air supply duct 132 is formed at the rear wall of the temperature-variable compartment 130. The temperature-variable supply air duct 132 is connected to the refrigerated supply air duct 143, and a temperature-variable air door 133 is provided in between. The temperature-variable air door 133 opens at a certain angle when the cooling airflow needs to be sent into the temperature-variable compartment 130.

The front side of the freezing compartment 140 is provided with a second rotating door 180, and the inside thereof defines a first freezing drawer 141 and a second freezing drawer 142 from top to bottom. A freezing air supply duct 143 is formed on the rear wall of the freezing compartment 140. The freezing air supply duct 143 has a plurality of freezing air supply openings 144 communicating with the freezing compartment 140, and a freezing air supply fan 145 is provided in the freezing air supply duct 143.

As is well known by those skilled in the art, the temperature of the refrigerating compartment 120 is generally between 2 ^° C and 10 ^° C, preferably between 4 ^° C and 7 ^° C. The temperature range of the freezer compartment 140 is generally -22 ^° C to -14 ^° C. Room temperature change chamber 130 can be freely adjusted to -18 ^° C to 8 ° C _o different types of optimal storage temperature of the article is not the same, a suitable storage location is not the same as, for example, fruit and vegetable foods suitable for storage in the refrigerating compartment 120 between , And meat food is suitable to be stored in the freezer compartment 140.

A front end plate 151 is formed on the front side of the cooling chamber 150, and a plurality of refrigerating return air outlets 152 communicating with the freezing compartment 140 are opened on the front end plate 151. A refrigerating evaporator 200 is provided in the cooling chamber 150, which is configured to cool the airflow entering the cooling chamber 150, and has a first evaporator part 210 and a second evaporator part 220. The lower end of the freezing air supply fan 145 is aligned with the freezing evaporator 200 to improve the ventilation efficiency. The refrigerator 100 of this embodiment defines the cooling chamber 150 below the storage compartment, so that the cooling chamber 150 occupies the lower space of the box 110, which increases the height of the freezer compartment 140 and reduces the user’s access to the freezer compartment 140. The degree of bending at the time of placing items improves the user experience. In addition, the cooling compartment 150 can provide a place for the compressor compartment 500, and the freezer compartment 140 no longer needs to make way for the compressor compartment 500, which avoids the need for the freezer compartment 140 to make way for the compressor compartment 500 in the existing solution, which would lead to the freezer compartment. 140 has the problem of irregular shapes, so that the depth and storage volume of the freezer compartment 140 can be guaranteed.

A water receiving pan 400 is provided in the cooling chamber 150 below the freezing evaporator 200. The water tray 400 has a first inclined portion 401, a second inclined portion 402 and a drain 403, a first inclined portion 401 and a second inclined portion 401 A drainage port 403 is opened at the intersection of the bottom of the inclined portion 402. The first evaporator part 210 is disposed against the first inclined part 401, and the second evaporator part 220 is disposed against the second inclined part 402. The top of the first inclined portion 401 is disposed close to the refrigerating return air opening 152, so that the return air flow of the freezing compartment 140 enters the cooling chamber 150 through the refrigerating return air opening 152 and sequentially passes through the first evaporator part 210 and the second evaporator part 220 Cool down.

The refrigerating evaporator 200 has a coil 201 and a plurality of fins 202 passing through the coil 201, wherein the distance between adjacent fins 202 of the first evaporator part 210 is greater than that of adjacent fins of the second evaporator part 220 202 pitch. The air in the freezing compartment 140 enters the cooling compartment 150 from the refrigerating return air outlet 152, first passes through the first evaporator part 210, and forms frost on the fins 202 of the first evaporator part 210, so that the first evaporator The pitch of the fins 202 of the portion 210 is set to be slightly larger to prevent the frost on the fins 202 of the first evaporator portion 210 from forming a frost block, which prevents air from entering the second evaporator portion 220. In some preferred embodiments, the distance between adjacent fins 202 of the first evaporator portion 210 is greater than or equal to 7 mm, and the distance between adjacent fins 202 of the second evaporator portion 220 is greater than or equal to 4 mm. In some preferred embodiments, the first evaporator part 210 includes a first part 211 at the front and a second part 212 at the rear; the first part 211 is close to the refrigerated return air outlet 152, and the adjacent fins 202 of the first part 211 The spacing is greater than the spacing between adjacent fins 202 of the second portion 212. For example, the distance between adjacent fins 202 of the first part 211 of the first evaporator part 210 is 10 mm, the distance between adjacent fins 202 of the second part 212 of the first evaporator part 210 is 8 mm, and the second evaporator part 210 The distance between adjacent fins 202 of 220 is 6 mm. For another example, the distance between adjacent fins 202 of the first part 211 of the first evaporator part 210 is 9mm, the distance between adjacent fins 202 of the second part 212 of the first evaporator part 210 is 7mm, and the second evaporator The distance between adjacent fins 202 of the portion 220 is 5 mm.

In some embodiments, there is a gap between the first evaporator part 210 and the second evaporator part 220, and the air rectification area 203 is defined at the gap, so that the return air flow is cooled by the first evaporator part 210 and then is The rectification zone 203 mixes and then reaches the second evaporator part 220. The width of the air rectification area 203 is greater than or equal to 15 mm, for example, the width of the air rectification area 203 is 20 mm, 22 mm, and 30 mm. It can be understood that the maximum value of the width of the air rectifying area 203 can be determined according to the volume of the refrigerator 100, the number of evaporators 200 of the refrigerator 100, the power of the evaporators 200, etc., and is not limited herein.

4 is an unintended top view of the top cover 300 of the refrigerator 100 shown in FIG. 1. 5 is a schematic cross-sectional view of the top cover 300 of the refrigerator 100 shown in FIG. 4 along the line AA. FIG. 6 is a partial schematic cross-sectional view of the refrigerator 100 shown in FIG. 4 along the line AA. FIG. 7 is a schematic cross-sectional view of the top cover 300 of the refrigerator 100 shown in FIG. 4 along the line BB. Fig. 8 is an edge view of the refrigerator 100 shown in Fig. 4 A partial schematic cross-sectional view of line BB. A top cover 300 is provided in the cooling chamber 150 above the freezing evaporator 200. The top cover 300 includes a cover body 301 and a cover groove 302, and has a first inclined surface 321, a second inclined surface 322 and a horizontal surface 310. The first inclined surface 321 is arranged corresponding to the first inclined portion 401, and the first evaporator portion 210 is arranged between the two. The second inclined surface 322 is arranged corresponding to the second inclined portion 402, and the second evaporator portion 220 is arranged between the two. In the refrigerator 100 of the embodiment of the present invention, a top cover 300 having a first inclined surface 321 and a second inclined surface 322 is disposed above the evaporator, and the freezing evaporator 200 is defined between the two, which can improve the fixing stability of the freezing evaporator 200.

The cover body 301 is respectively provided with cover grooves 302 on the left and right sides of the bottom. One end of the cover groove 302 extends to cover the air rectifying area 203, and the other end extends to cover a part of the second evaporator portion 220. After passing through the first evaporator part 210, the air is mixed in the air rectification zone 203, and under the action of the refrigerating blower 145, it continues to pass through the second evaporator part 220, because the refrigerating blower 145 is in the middle position, the air resistance in the middle is the smallest The air tends to pass through the middle part of the second evaporator part 220, so grooves are made on both sides of the top cover plate 300 to reduce the air flow resistance on both sides, so that the air in the air rectification zone 203 also passes more uniformly. The second evaporator part 220 also improves the heat exchange efficiency of the refrigerating evaporator 200. Fig. 9 is a wind speed distribution diagram of the refrigerator 100 according to an embodiment of the present invention. Fig. 10 is a wind speed distribution diagram of the refrigerator 100 when the top cover 300 has no grooves. It can be seen from the wind speed distribution line 90 in FIG. 10 that the pressure near the refrigerating blower 145 is the lowest, and the air passing through the refrigerating evaporator 200 flows to the refrigerating blower 145 under the action of the pressure difference, and because the air is flowing In the middle, the air resistance in the middle is small and the wind speed is high. First, it enters the air inlet of the refrigerating blower 145 through the refrigerating evaporator 200, so that the wind speed of the refrigerating evaporator 200 gradually decreases from the center to the two sides, and the fins located on both sides The convective heat transfer coefficient of 202 is low, and the heat transfer efficiency decreases. It can be seen from the first wind speed distribution line 91 and the second wind speed distribution line 92 in FIG. 9 that by providing the air rectifying area 203, the air passes through the second evaporator part 220 more uniformly, and the performance of the refrigerating evaporator 200 is improved. Heat transfer efficiency.

Fig. 11 is a schematic bottom view of a refrigerator 100 according to an embodiment of the present invention. Figure 12 is a graph

11 is a schematic perspective view of the main components of the compressor compartment 500 of the refrigerator 100. FIG. 13 is a perspective schematic view of the compressor compartment 500 of the refrigerator 100 shown in FIG. 11. The bottom of the cabinet 110 of the refrigerator 100 of the embodiment of the present invention defines a compressor cabin 500, and the compressor cabin 500 is located behind the cooling chamber 150, so that the compressor cabin 500 as a whole is under the freezer compartment 140, as before, the freezer compartment 140 It is no longer necessary to make room for the compressor compartment 500, which ensures the depth of the freezer compartment 140 and facilitates the placement of large and difficult-to-divide items. The refrigerator 100 further includes a heat dissipation fan 502. The cooling fan 502 may be an axial fan. Compress The engine 501, the cooling fan 502, and the condenser 503 are arranged in the compressor cabin 500 at intervals along the transverse direction. In some embodiments, the section 511 of the rear wall (ie, the back plate 510) of the compressor cabin 500 corresponding to the compressor 501 is formed with at least one rear air outlet 512.

Before the present invention, there are two design ideas generally used by those skilled in the art. One is to respectively open a rear air inlet hole (not shown in the figure) facing the condenser 503 and a rear air outlet 512 facing the compressor 501 on the rear wall of the compressor cabin 500 to complete heat dissipation on the rear wall of the compressor cabin 500 The circulation of airflow. The other is to provide ventilation holes on the front wall and the rear wall of the compressor cabin 500 to form a heat dissipation circulating air path in the front and rear directions. When it is necessary to improve the heat dissipation effect of the compressor cabin 500, those skilled in the art usually expand the ventilation area by increasing the number of rear air inlets and rear air outlets 512 on the rear wall of the compressor cabin 500, or by increasing the heat exchange of the condenser 503 Area to achieve, for example, using a U-shaped condenser with a larger heat exchange area.

The inventor creatively realized that the heat exchange area of the condenser 503 and the ventilation area of the compressor compartment 500 are not as large as possible: in the conventional design scheme of increasing the heat exchange area of the condenser 503 and the ventilation area of the compressor compartment 500, it will Come the problem of uneven heat dissipation in condenser 503. It adversely affects the refrigeration system of the refrigerator 100. For this reason, the present invention proposes to define a bottom air inlet 505 adjacent to the condenser 503 and a bottom air outlet 506 adjacent to the compressor 501 arranged horizontally on the bottom wall of the box 110, so that the heat dissipation airflow is completed at the bottom of the refrigerator 100 Without increasing the distance between the rear wall of the box body 110 and the cabinet. While reducing the space occupied by the refrigerator 100, it can ensure good heat dissipation of the compressor cabin 500, which fundamentally solves the pain point that the compressor cabin 500 of the embedded refrigerator 100 cannot be balanced between heat dissipation and space occupation, which is of particular significance. . The four corners of the bottom wall 504 of the box body 110 can also be provided with support rollers (not shown in the figure). The box body 110 is placed on the support surface through the four support rollers, so that the bottom wall 504 of the box body 110 and the support surface form A certain amount of space.

The heat dissipation fan 502 is configured to cause the ambient air around the bottom air inlet 505 to enter the compressor compartment 500 from the bottom air inlet 505, pass through the condenser 503, the compressor 501, and then flow from the bottom air outlet 506 to the external environment to compress The machine 501 and the condenser 503 dissipate heat. In the vapor compression refrigeration cycle, the surface temperature of the condenser 503 is generally lower than the surface temperature of the compressor 501, so that the above-described process, so that the outside air cooled condenser 503 to the compressor 501 and then cooled _O

In a preferred embodiment, the plate section 531 of the back plate 510 facing the condenser 503 is a continuous plate surface, that is, the plate section 531 has no heat dissipation holes. The inventor creatively realizes that without increasing the heat exchange area of the condenser 503, reducing the ventilation area of the compressor cabin 500 can form a better heat dissipation airflow path, and still achieve better heat dissipation effects. This is because the plate section 531 is connected The continuous plate surface makes the heat dissipation airflow entering the compressor compartment 500 enclosed at the condenser 503, ensuring the uniformity of the heat exchange of each condensation section of the condenser 503, and is conducive to forming a better heat dissipation airflow path, which can also achieve better heat radiation. At the same time, since the plate section 531 is a continuous plate surface, it is avoided that both the outlet and inlet winds are concentrated at the rear of the compressor cabin 500 in the conventional design, and the hot air blown out from the compressor cabin 500 is not cooled by the ambient air in time and enters the compressor again. In the nacelle 500, the heat exchange of the condenser 503 is adversely affected, thereby ensuring the heat exchange efficiency of the condenser 503.

In some embodiments, the two side walls of the compressor cabin 500 are respectively provided with side ventilation holes 521 in the transverse direction. The side ventilation holes 521 are covered with a ventilation cover 522, and the ventilation cover 522 is formed with grille ventilation holes. The two side walls of the box body 110 are respectively provided with side openings corresponding to the side ventilation holes 521, so that the heat dissipation airflow can flow to the outside of the refrigerator 100. Therefore, the heat dissipation path is further increased, and the heat dissipation effect of the compressor compartment 500 is ensured. It can be understood that the two side walls of the box body 110 may be directly used as the side walls of the compressor cabin 500. For example, as shown in FIG. 13, the side plates 520 constitute the side walls of the box body 110 and serve as the side walls of the compressor cabin 500. .

In a preferred embodiment, the condenser 503 includes a first straight section 532 extending transversely, a second straight section 533 extending back and forth, and a transition curved section 534 connecting the first straight section 532 and the second straight section 533, thereby form

503. The aforementioned plate section 531 of the back plate 510 corresponding to the condenser 503 is also the plate section 531 of the back plate 510 facing the first straight section 532. The ambient air entering from the side ventilation holes 521 directly exchanges heat with the second straight section 533, and the ambient air entering from the bottom air inlet 505 directly exchanges heat with the first straight section 532, thereby further entering the compressor cabin 500 The ambient air is more concentrated at the condenser 503 to ensure the uniformity of the overall heat dissipation of the condenser 503.

In one embodiment, the bottom wall of the box body 110 is defined by the first horizontal plate 530, a part of the bent plate 540, and the second horizontal plate 550. The first horizontal plate 530 is located in front of the bottom of the refrigerator 100. A bent plate 540 is formed by bending and extending from the rear end of the first horizontal plate 530 backward and upward. The bent plate 540 extends above the second horizontal plate 550. The compressor 501, the heat dissipation fan 502, and the condenser 503 are arranged on the second horizontal plate 550 at intervals along the transverse direction, and are located in the space defined by the second horizontal plate 550, the two side plates 520, the back plate 510 and the bent plate 540 . The bent plate 540 includes a vertical portion 541, an inclined portion 542, and a horizontal portion 543. The vertical portion 541 extends upward from the rear end of the first horizontal plate 530, the inclined portion 542 extends rearward and upward from the upper end of the vertical portion 541 to above the second horizontal plate 550, and the horizontal portion 543 extends from the rear end of the inclined portion 542 to The rear extends to the back plate 510.

The first horizontal plate 530 and the second horizontal plate 550 are spaced apart, and a bottom opening is formed between them. In one embodiment, the refrigerator 100 further includes a partition 560. The partition 560 is arranged behind the bent plate 540, and its front part is connected with the rear end of the first horizontal plate 530, and its rear part is connected with the front end of the second horizontal plate 550, and is arranged to divide the bottom opening into horizontally arranged The bottom air inlet 505 and the bottom air outlet 506 can be seen from the foregoing that the bottom air inlet 505 and the bottom air outlet 506 of the embodiment of the present invention are defined by the partition 560, the second horizontal plate 550, and the first horizontal plate 530, thereby making The bottom air inlet 505 and the bottom air outlet 506 have a slot shape with a larger opening size, so that the air inlet area and the air outlet area are increased, the air inlet resistance is reduced, the air flow is smoother, and the manufacturing process is simpler. The overall stability of the 500 is stronger.

The inclined portion 542 is located at the gap between the first horizontal plate 530 and the second horizontal plate 550, and is located above the bottom air inlet 505 and the bottom air outlet 506. The slope structure of the inclined portion 542 can also guide and rectify the inlet airflow, so that the airflow entering from the bottom air inlet 505 flows to the condenser 503 more concentratedly, which prevents the airflow from being too dispersed to pass through the condenser 503 more. This further ensures the heat dissipation effect of the condenser 503. At the same time, the slope structure of the inclined portion 542 guides the airflow from the bottom air outlet 506 to the front side of the bottom air outlet 506, so that the airflow flows out of the compressor cabin 500 more smoothly, thereby further improving the smoothness of air flow. . In a preferred embodiment, the angle between the inclined portion 542 and the horizontal plane is less than 45°. At this angle, the inclined portion 542 has a better guiding and rectifying effect on the airflow.

In addition, what is unexpected is that the inventor of the present application creatively realized that the slope structure of the inclined portion 542 also has a better suppression effect on airflow noise. In the prototype test, the pressure of the inclined portion 542 specially designed above The noise of the engine room 500 can be reduced by more than 0.65 decibels.

In addition, in traditional refrigerators, the bottom of the box 110 generally adopts a carrying plate with a substantially flat structure, and the compressor 501 is arranged on the inner side of the carrying plate. The vibration generated by the compressor 501 during operation has a greater impact on the bottom of the box 110 . However, in the embodiment of the present invention, as described above, the bottom of the box body 110 is constructed as a three-dimensional structure, and the second horizontal plate 550 is used to carry the compressor 501, which reduces the impact of the vibration of the compressor 501 on other components at the bottom of the box body 110. influences. In addition, by designing the cabinet 110 as the above ingenious special structure, the bottom of the refrigerator 100 has a compact structure and a reasonable layout, which reduces the overall volume of the refrigerator 100, and at the same time makes full use of the space at the bottom of the refrigerator 100 to ensure the compressor 501 And the heat dissipation efficiency of the condenser 503.

In some embodiments, the upper end of the condenser 503 is also provided with a windshield 570. The windshield 570 can be a windshield sponge, which fills the space between the upper end of the condenser 503 and the bent plate 540, that is, the windshield 570 covers the first straight section 532, the second straight section 533 and the transition curve. The upper end of paragraph 534, and block The upper end of the wind piece 570 should abut the bending plate 540 to seal the upper end of the condenser 503, so as to prevent part of the air entering the compressor cabin 500 from passing through the space between the upper end of the condenser 503 and the bending plate 540 without passing through condensation 503, so that as much air entering the compressor cabin 500 as possible passes through the condenser 503 for heat exchange, and further improves the heat dissipation effect of the condenser 503.

In some embodiments, the refrigerator 100 further includes a windshield 580 extending forward and backward. The windshield 580 is located between the bottom air inlet 505 and the bottom air outlet 506, extends from the lower surface of the first horizontal plate 530 to the lower surface of the second horizontal plate 550, and is connected to the lower end of the partition 560 to utilize the windshield 580 and the partition 560 completely isolate the bottom air inlet 505 and the bottom air outlet 506, so that when the refrigerator 100 is placed on a supporting surface, the space between the bottom wall of the cabinet 110 and the supporting surface is horizontally partitioned to allow outside air to flow in The heat dissipation fan 502 enters the compressor compartment 500 through the bottom air inlet 505 on the lateral side of the windshield 580, and then flows through the condenser 503, the compressor 501, and finally from the other side of the windshield 580. The bottom air outlet 506 flows out, thereby completely isolating the bottom air inlet 505 and the bottom air outlet 506, ensuring that the outside air entering the condenser 503 and the heat dissipating air discharged from the compressor 501 will not flow together, thereby further ensuring heat dissipation efficiency.

So far, those skilled in the art should realize that although multiple exemplary embodiments of the present invention have been shown and described in detail herein, they can still be disclosed according to the present invention without departing from the spirit and scope of the present invention. The content directly determines or deduces many other variations or modifications that conform to the principles of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all these other variations or modifications.

Claims

Rights request

1. A refrigerator comprising:

The evaporator is arranged in the cooling chamber, configured to cool the airflow entering the cooling chamber, and has a first evaporator part and a second evaporator part; and

The water receiving pan is arranged below the evaporator and has a first inclined portion, a second inclined portion, and a drainage port. The drainage port is opened at the intersection of the bottom of the first inclined portion and the second inclined portion; wherein The first evaporator part is arranged against the first inclined part, and the second evaporator part is arranged against the second inclined part.

2. The refrigerator according to claim 1, wherein

The at least one storage compartment includes a freezer compartment;

The front side of the cooling chamber is formed with at least one refrigerating return air opening communicating with the freezing compartment; the top of the first inclined portion is arranged close to the refrigerating return air opening, so that the return air flow of the freezing compartment It enters the cooling chamber through the refrigerated return air port and sequentially passes through the first evaporator part and the second evaporator part for cooling.

3. The refrigerator according to claim 2, wherein

There is a gap between the first evaporator part and the second evaporator part, and an air rectification area is defined at the gap, so that the return air flow is cooled by the first evaporator part and is The air rectifying zone is mixed and then reaches the second evaporator part.

4. The refrigerator according to claim 3, wherein

The width of the air rectifying area is greater than or equal to 15 mm.

5. The refrigerator according to claim 3, further comprising:

The top cover plate is arranged above the evaporator and has a first inclined surface and a second inclined surface; the first inclined surface is arranged corresponding to the first inclined portion, and the first evaporator portion is arranged between the two;

The second inclined surface is arranged corresponding to the second inclined portion, and the second steam is arranged between the two Hair department.

6. The refrigerator according to claim 5, wherein

The top cover plate is respectively provided with grooves on the left and right sides of the bottom;

One end of the groove extends to cover the air rectification zone, and the other end extends to cover a part of the second evaporator part, so that the return air flow mixed by the air rectification zone evenly passes through the first Two evaporator department.

7. The refrigerator according to claim 2, wherein

The evaporator has a coil and a plurality of fins passing through the coil;

The pitch of adjacent fins of the first evaporator part is greater than the pitch of adjacent fins of the second evaporator part.

8. The refrigerator according to claim 7, wherein

The distance between adjacent fins of the first evaporator part is greater than or equal to 7 mm.

9. The refrigerator according to claim 8, wherein

The first evaporator part includes a first part at the front part and a second part at the rear part; the first part is close to the refrigerating return air outlet, and the distance between adjacent fins of the first part is larger than that of the second part. Part of the distance between adjacent fins.

10. The refrigerator according to claim 7, wherein

The distance between adjacent fins of the second evaporator part is greater than or equal to 4 mm.