CN114076470A

CN114076470A - Refrigerator with bottom-mounted evaporator

Info

Publication number: CN114076470A
Application number: CN202010834006.4A
Authority: CN
Inventors: 朱小兵; 董凌云; 野田俊典; 刘会
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2022-02-22
Also published as: WO2022037720A1

Abstract

The invention provides an evaporator bottom-mounted refrigerator, comprising: the refrigerator comprises a refrigerator body and a refrigerator body, wherein the refrigerator body is provided with a bottom inner container, the bottom inner container is limited with a cooling chamber and a storage space, the cooling chamber is arranged below the storage space, and the depth of the refrigerator body in the front-back direction is 480 mm-560 mm; and the refrigerating system comprises an evaporator, the evaporator is obliquely arranged in the cooling chamber and is configured to provide cold energy to the storage space. Through a large amount of structure optimization work, the refrigerator meets the requirements of normal operation and various performance indexes of the refrigerator, and improves the refrigeration efficiency on the basis of ensuring that the refrigerator body is ultrathin and has a larger effective storage volume.

Description

Refrigerator with bottom-mounted evaporator

Technical Field

The invention relates to household appliances, in particular to a refrigerator with an evaporator arranged at the bottom.

Background

Some refrigerator users have higher requirements for the occupied space of the refrigerator. The refrigerator needs to provide as large a usage volume as possible while occupying as little space as possible. Especially for a built-in refrigerator that is fitted with an integrated cabinet, users put higher demands on the space occupation of the refrigerator, such as requiring the refrigerator to be flush with the surface of the cabinet.

For the above space requirement, the size of the refrigerator in the front-back direction (or called depth size) needs to be smaller than or equal to the depth size of the cabinet. In the traditional refrigerator, the evaporator is arranged at the back of the refrigerator to occupy a large amount of depth space, so that the requirement of the depth size of the embedded refrigerator cannot be met. That is to say, the traditional refrigerator can not meet the requirement of an ultra-thin box body.

In view of the above problems, the prior art has appeared to provide an evaporator-bottom type refrigerator, i.e. an evaporator is disposed at the bottom of a cabinet. On one hand, the refrigerator avoids the evaporator occupying deep space; on the other hand, the height of the storage space at the bottom is raised, and the stooping degree of the user in the operation of taking and placing articles in the storage space is reduced. However, the depth of the refrigerator still cannot meet the installation requirements of some cabinets.

Disclosure of Invention

An object of the present invention is to provide an evaporator bottom-mounted refrigerator.

A further object of the present invention is to enable an evaporator bottom mounted refrigerator to simultaneously meet the requirement of the size of the occupied space.

A further object of the present invention is to provide a refrigerator with improved cooling/cold transfer efficiency while ensuring a greater effective storage volume for the refrigerator.

In particular, the present invention provides an evaporator bottom-mounted refrigerator comprising: the method comprises the following steps:

the refrigerator comprises a refrigerator body and a refrigerator body, wherein the refrigerator body is provided with a bottom inner container, the bottom inner container is limited with a cooling chamber and a storage space, the cooling chamber is arranged below the storage space, and the depth of the refrigerator body in the front-back direction is 480 mm-560 mm;

and the refrigerating system comprises an evaporator, the evaporator is obliquely arranged in the cooling chamber and is configured to provide cold energy to the storage space.

Optionally, the evaporator is provided in front of the cooling chamber to be inclined upward from front to back; and the evaporator bottom-mount refrigerator further comprises:

air supply assembly sets up in the rear of evaporimeter, and it includes:

the refrigerating fan is arranged behind the evaporator in a manner of inclining upwards from front to back and is configured to promote the formation of refrigerating airflow sent to the storage space through the evaporator;

and the air supply duct is arranged on the rear wall of the bottom inner container, is communicated with the air outlet of the refrigerating fan and is provided with at least one air supply outlet, and the air supply outlet is used for communicating the air supply duct and the storage space so as to convey refrigerating airflow to the storage space.

Optionally, the refrigeration fan is a centrifugal fan, an air suction port of the refrigeration fan faces the front upper side, and an air exhaust port of the refrigeration fan is located at the rear end of the centrifugal fan and connected with the lower end of the air supply duct.

Optionally, the length of the projection of the evaporator in the horizontal direction along the front-back direction accounts for less than 41% of the depth dimension of the box body along the front-back direction;

the minimum horizontal distance from the front end of the centrifugal fan to the evaporator is set to be greater than or equal to 3 mm;

the length of the horizontal projection of the air supply assembly along the front-back direction accounts for less than 49% of the depth of the box body along the front-back direction;

the thickness of the vertical section of the air supply duct extending upwards along the front-back direction accounts for less than 10% of the depth of the box body along the front-back direction.

Optionally, the bottom wall of the bottom liner comprises: a first support part which is arranged from the front end of the bottom wall to the back and is inclined downwards;

a lower recess portion provided at a rear side of the first support portion and configured to be inclined upward from a lateral middle portion to both sides, thereby opening a water discharge opening at the lateral middle portion, the water discharge opening being for discharging water in the cooling chamber;

a second support part which is arranged from the rear end of the water outlet to the rear and is inclined upwards from the front to the rear

The evaporator is placed on the second supporting portion, the front end of the evaporator abuts against the first supporting portion, and therefore water appearing on the evaporator is gathered on the lower concave portion, and the water outlet is located in the front portion of the evaporator along the front-rear direction of the box body.

Optionally, the cabinet forms a cabin at the rear below the bottom liner, and the refrigerator further includes:

the evaporating dish is arranged in the press cabin;

and the drain pipe obliquely extends from the water outlet to the evaporation pan from front to back, and the inclination angle of the drain pipe is more than or equal to 5 degrees and less than or equal to 15 degrees.

Optionally, the bottom wall of the bottom liner comprises: and the third supporting part is arranged from the front end of the second supporting part to the rear end of the second supporting part in an inclined manner, and the refrigerating fan is fixed on the third supporting part.

Optionally, the evaporator bottom-mounted refrigerator further comprises: the evaporator upper cover is transversely arranged in the bottom inner container and is used for separating the cooling chamber from the storage space; and the air return cover is arranged at the front end of the evaporator upper cover and is used as the front wall of the cooling chamber.

Optionally, a horizontal distance from the front end of the return air cover to the front end of the box body accounts for less than 8.2% of a depth dimension of the box body in the front-back direction.

Optionally, the box further comprises: the longitudinal partition plate is arranged in the middle of the storage space and divides the storage space into two storage cavities which are transversely arranged, and the front part of the longitudinal partition plate is provided with a heat-insulating vertical beam.

Optionally, the thickness of the heat insulation layer of the heat insulation vertical beam in the front-back direction accounts for less than 15.7% of the depth of the box body in the front-back direction; and the horizontal distance from the front end of the evaporator to the heat insulation vertical beam accounts for less than 15.7 percent of the depth dimension of the box body along the front and back directions.

Optionally, the rated cooling power or the maximum cooling power of the cooling system is set to be greater than or equal to the set power value.

The refrigerator with bottom evaporator of the present invention has cooling chamber below the inner container, and the evaporator set obliquely inside the cooling chamber for easy water drainage and heat exchange, and the refrigerator has casing with depth of 480-560 mm (for example, about 510 mm). Through a large amount of structure optimization work, the refrigerator meets the requirements of normal operation and various performance indexes of the refrigerator, and achieves the effects of ultra-thin and large volume.

Furthermore, the evaporator bottom-mounted refrigerator of the invention sets the depth dimension of the refrigerator body along the front and back direction within the range of 480mm to 560mm under the condition that the rated refrigeration power or the maximum refrigeration power of the refrigeration system is not lower than the set power value, and simultaneously meets the requirements of multiple indexes of refrigeration requirement, space requirement and effective volume.

Furthermore, according to the refrigerator, the evaporator is arranged in the cooling chamber, so that on one hand, the depth dimension (distance in the front-back direction) of the refrigerator body is reduced, and the depth dimension is used for the storage space as much as possible; on the other hand, because the bottom of the storage space is improved, the inconvenience in use caused by the fact that a user can take and place articles only by bending down or squatting down greatly is avoided.

Furthermore, the refrigerator of the invention has the advantages that the evaporator is obliquely arranged in the cooling chamber, and the technical limitation that the evaporator needs to be horizontally arranged for reducing the depth size in the prior art is broken through. Although the length of the evaporator in the front-back direction is increased due to the fact that the evaporator is obliquely arranged, the arrangement of other parts in the cooling chamber is more reasonable due to the fact that the evaporator is obliquely arranged, and the air circulation efficiency is higher and drainage is more smooth as proved by actual airflow field analysis.

Furthermore, the refrigerator of this embodiment has all carried out strict demonstration and accurate calculation to the size and the relative position of parts such as bottom inner bag, evaporimeter, air supply assembly, return air cover, longitudinal baffle, drain pipe, evaporating dish, under the very strict condition of dimensional requirement, has satisfied the requirement of each performance index.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic front view of an evaporator bottom mounted refrigerator according to one embodiment of the present invention;

FIG. 2 is a schematic front view of a lower portion of a cabinet in an evaporator-bottom type refrigerator according to an embodiment of the present invention;

FIG. 3 is a schematic perspective view of the case shown in FIG. 2;

FIG. 4 is a schematic block diagram of a refrigerator according to one embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view taken along section line A-A in FIG. 2;

FIG. 6 is a schematic cross-sectional view taken along section line B-B in FIG. 2; and

fig. 7 is a schematic structural view of a refrigerator according to an embodiment of the present invention after a door is closed;

FIG. 8 is a cross-sectional top view of the bottom liner in an evaporator bottom mounted refrigerator illustrating the bottom upper surface of the bottom liner according to one embodiment of the present invention;

FIG. 9 is a schematic longitudinal sectional view of a lower portion of a cabinet in a refrigerator having an evaporator installed thereunder according to an embodiment of the present invention;

fig. 10 is an exploded view of an air supply assembly in an evaporator bottom type refrigerator according to an embodiment of the present invention.

Detailed Description

In the description of the present embodiment, it is to be understood that the terms "longitudinal direction", "lateral direction", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "depth", and the like indicate orientations or positional relationships that are based on the orientation in a normal use state of the refrigerator as a reference, and can be determined with reference to the orientations or positional relationships shown in the drawings, for example, "front" indicating the orientation refers to the side of the refrigerator facing the user. This is merely to facilitate description of the invention and to simplify the description, and is not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed and operated in a particular orientation, and thus should not be taken to be limiting of the invention.

Fig. 1 is a schematic front view of an evaporator-bottom type refrigerator 10 according to an embodiment of the present invention, and fig. 2 is a schematic front view of a lower portion of a cabinet in the refrigerator 10 according to an embodiment of the present invention. Fig. 3 is a schematic perspective view of the casing 100 shown in fig. 2. Fig. 2 and 3 mainly show the structure of the bottom portion of the case.

The evaporator bottom mounted refrigerator 10 of the present embodiment may generally include a cabinet 100. The box 100 may include a housing, an inner container, a thermal insulation layer, and other accessories. The outer case is the outer structure of the refrigerator 10, protecting the entire refrigerator. In order to insulate the heat conduction from the outside, a heat insulation layer is provided between the outer shell and the inner container of the cabinet 100, and the heat insulation layer is generally formed by a foaming process. The inner container may be one or more, and may be classified into a refrigerating inner container, a temperature-changing inner container, a freezing inner container, and the like according to the function.

The plurality of inner containers can be arranged up and down, and the bottom inner container 101 is the inner container at the lowest part. The bottom liner 101 defines a cooling chamber and a storage space 120 in this embodiment. The storage space 120 may be a space for storing articles at the bottom of the refrigerator 10, and generally, the bottom liner 101 is a freezing liner, and the storage space 120 constitutes a freezing compartment. A temperature-changing chamber defined by the temperature-changing liner and a refrigerating chamber defined by the refrigerating liner can be arranged above the freezing chamber according to requirements. The number and the functions of the specific storage compartments can be configured according to the requirements of the refrigerator, the requirements on the size are the highest due to the fact that the parts in the bottom liner 101 are the most complex, and the overall sizes of other liners can be configured correspondingly according to the size of the bottom liner 101. The front side of the cabinet 100 is further provided with a door to open or close the storage compartment, and the door is hidden in the drawing in order to show the internal structure of the cabinet 100.

Above the bottom liner 101, the evaporator bottom mounted refrigerator 10 may also have a plurality of liners to form a refrigerating compartment, a temperature changing compartment, and the like. The cabinet layout of the evaporator bottom-mounted refrigerator 10 may be various, and is not limited to a french type refrigerator, a T-shaped refrigerator, and the like.

An evaporator upper cover 130 can be disposed within the bottom liner 101. The evaporator upper cover 130 is transversely disposed in the bottom inner container 101 to partition the cooling compartment from the storage space 120. The evaporator upper cover 130 serves as both a bottom wall of the storage space 120 and a top of the cooling chamber, and the storage space 120 above it is used to store articles.

In some alternative embodiments, a longitudinal partition 140 can also be disposed within bottom liner 101. And the longitudinal partition plate 140 is arranged in the middle of the storage space 120 and divides the storage space 120 into two storage cavities which are transversely arranged. That is, the storage space 120 has a left storage chamber and a right storage chamber, and the two storage chambers can be respectively provided with door bodies to form a split door structure. It should be noted that the configuration of the bottom inner container 101 as a split-door structure is only an alternative embodiment, and those skilled in the art can configure the storage space 120 as a whole or in other partitions according to the specific functions of the refrigerator.

Fig. 4 is a schematic block diagram of the refrigerator 10 according to one embodiment of the present invention. The refrigeration system 300 may be a refrigeration cycle system composed of a compressor 310, a condenser 320, a throttle device 330, an evaporator 340, and the like. The evaporator 340 is configured to directly or indirectly provide cooling energy into the storage space 120. The refrigerator 10 realizes the circulation of the cooling airflow in the evaporator 340 and the storage compartment through the air path system. Because of the cycle configuration and operation of the refrigeration system itself, which are well known and readily implemented by those skilled in the art, further description of the refrigeration system itself is omitted herein so as not to obscure and obscure the improvements of the present application.

The air supply assembly 400 is used for circulating an air flow between the cooling chamber and the storage space 120, and may specifically include a centrifugal fan 410 and an air supply duct 420.

In order to satisfy the cooling demand of the refrigerator 10, the refrigeration system of the present embodiment sets the rated cooling power or the maximum cooling power not to be lower than the set power value. That is, the refrigerating capacity of the refrigerating system is not lower than the set power, for example, the set power value may be set as the set power value, and the set power value may be set according to the refrigerating requirement of the volume of the refrigerator 10, for example, the refrigerating requirement of a medium or large refrigerator with a volume of more than 200L needs to be satisfied. Therefore, the evaporator bottom-mounted refrigerator 10 of the embodiment has enough refrigerating capacity, the effective use volume ratio of the refrigerator body can be increased on the basis, and the requirements of refrigerating efficiency and energy consumption grade can be met.

Fig. 5 is a schematic cross-sectional view taken along a sectional line a-a in fig. 2, and fig. 6 is a schematic cross-sectional view taken along a sectional line B-B in fig. 2. Hatching is omitted in fig. 5 and 6 for ease of illustration of the particular components, only the outlines of the components remaining.

The cooling chamber 110 is disposed below the storage space 120, and is used for arranging the evaporator 340 and a part of the air supply assembly 400. In the refrigerator 10 of the present embodiment, compared to the conventional refrigerator in which the evaporator 340 is disposed at the rear of the cabinet, the evaporator 340 is disposed in the cooling chamber 110, so that the depth (distance in the front-rear direction) of the cabinet 100 is reduced, and the depth is used for the storage space 120 as much as possible; on the other hand, the bottom of the storage space 120 is increased, so that inconvenience in use caused by the fact that a user needs to bend over or squat down greatly to take and place articles is avoided.

The depth dimension of the cabinet 100 of the evaporator bottom type refrigerator 10 of the present embodiment in the front-rear direction is set to 480mm to 560mm, and may be further set to approximately equal to 510 mm. After a lot of structure optimization works, the evaporator 340 of the refrigeration system with rated refrigeration power or maximum refrigeration power not lower than a set power value is arranged in the cooling chamber 110 of the refrigerator 10 of the embodiment under the condition that the depth dimension is set to be 480mm to 560mm, so that the requirements of normal operation and energy consumption standard of the refrigerator are met.

The evaporator 340 may be substantially flat and rectangular in shape as a whole. I.e., the thickness dimension of the evaporator 340 perpendicular to the support surface is significantly less than the length dimension of the evaporator 340. The evaporator 340 may be a fin evaporator, and the fins are arranged in a direction parallel to the front-rear depth direction, so as to facilitate the airflow passing through from front to rear. In other embodiments, the evaporator 340 may be configured in other similar flat configurations.

In the refrigerator 10 of the present embodiment, the evaporator 340 is disposed in the cooling chamber 110 in an inclined manner from front to back, which overcomes the technical limitation that the evaporator 340 needs to be horizontally disposed for reducing the depth dimension in the prior art, and although the inclined disposition of the evaporator 340 may cause the increase of the length in the front-back direction, the inclined disposition thereof makes the arrangement of other components in the cooling chamber 110 more reasonable, and the actual airflow field analysis proves that the air circulation efficiency is also higher, and the water drainage is also more comfortable. The oblique arrangement of the evaporator 340 is one of the main technical improvements made by the present embodiment.

In order to reduce the depth dimension in the front-rear direction, the refrigerator 10 of the present embodiment strictly sets the front-rear direction positions and the dimensions of the respective components in the cooling chamber 110, wherein the length of the horizontal projection of the evaporator 340 in the front-rear direction accounts for less than 41% of the depth dimension of the cabinet 100 in the front-rear direction, and further may be set to less than 35%, for example, may be set to 29.8%. The depth dimension of the case 100 in the front-rear direction means the entire horizontal length from the front end to the rear end. The size and arrangement of the evaporator 340 are optimized according to the space requirement and the refrigeration performance requirement, and the effect of the trial-manufactured product is verified.

In the case where the depth dimension of the case is 480mm to 560mm, the size of the projection of the evaporator 340 in the horizontal direction is less than 196.8mm to 229.6 mm.

The evaporator 340 may be generally disposed at the front of the cooling compartment 110, and a cooling fan may be further disposed at the rear of the evaporator 340.

The air blowing assembly 400 of the refrigerator 10 of the present embodiment is disposed behind the evaporator 340. The air supply assembly 400 may include a cooling fan 410 and an air supply duct 420. Wherein the cooling fan 410 may be disposed at the rear of the evaporator 340 to be inclined upward from the front to the rear, and configured to induce a cooling air flow to be sent to the storage space 120 via the evaporator 340. The inclination angle of the cooling fan 410 may be greater than that of the evaporator 340, so that a cabin may be formed at the rear portion of the lower portion of the bottom inner container 101 to give way.

The air supply duct 420 is disposed on the rear wall of the bottom inner container 101, is communicated with the air outlet of the refrigeration fan 410, and is provided with at least one air supply opening 421. The air supply outlet 421 is used for communicating the air supply duct 420 and the storage space to deliver the cooling air flow to the storage space 120.

The cooling fan 410 may be selected from various fans, such as a centrifugal fan, an axial flow fan, and a cross flow fan, as needed, and is required to meet the functional requirement of discharging the air in the area where the evaporator 340 is located into the air supply duct 420.

In some preferred embodiments, the refrigeration fan 410 may use a centrifugal fan. In the embodiment using the centrifugal fan as the cooling fan 410, the centrifugal fan 410 is disposed obliquely behind the evaporator 340 with its suction opening facing upward and forward, and is configured to promote the formation of a cooling air flow sent to the storage space 120 via the evaporator 340; the horizontal distance from the front end of the centrifugal fan 410 to the evaporator 340 is set to be greater than or equal to 3mm, thereby satisfying the airflow flow requirement.

The centrifugal fan 410 is located entirely behind the evaporator 340, and includes a volute and an impeller disposed in the volute, and is configured to promote the formation of a refrigerant airflow and provide a circulating power of the refrigerant airflow. The volute comprises a lower box body and an upper cover body which are buckled, and the volute is convenient to disassemble and assemble. The suction inlet of the centrifugal fan 410 is generally located at the center of the volute and may be at a height above the top end of the evaporator 340.

The centrifugal fan 410 has an air outlet at the rear end, is configured to supply air obliquely rearward, and is connected to the lower end of the air supply duct 420. The air supply duct 420 extends upward along the rear wall of the bottom inner container 101 and is configured to deliver the cooling air flow to the storage space 120. An air supply opening 421 communicated with the air supply duct 420 is opened in the rear wall of the storage space 120 to discharge the refrigerant air into the storage space 120. The thickness of the vertical section extending upward of the air supply duct 420 in the front-rear direction accounts for less than 10% of the depth dimension of the cabinet 100 in the front-rear direction, and is further set to less than 5.0%, and may be 4.9%, for example.

When the depth of the box is 480mm to 560mm, the length of the entire blower unit 400 in the horizontal direction in the front-rear direction is less than 48mm to 56 mm.

The evaporator 340 is provided at the front of the cooling chamber 110 to be inclined upward from the front to the rear, and the centrifugal fan 410 is provided at the rear of the cooling chamber 110 to be inclined upward from the front to the rear. Wherein the inclination angle of the evaporator 340 is smaller than that of the centrifugal fan 410. The bottom end of the centrifugal fan 410 is higher than the evaporator 340. The height of the air suction opening of the centrifugal fan 410 is higher than that of the evaporator 340. So that the inclination angle of the portion of the bottom inner container 101 for supporting the evaporator 340 is smaller than that of the portion of the bottom inner container 101 for supporting the centrifugal fan 410.

The location and inclination angle of the centrifugal fan 410 also provides space for the compressor compartment to be disposed rearwardly and downwardly of the cooling compartment 110.

When other types of fans are used, the specific air outlet and the specific orientation can be configured correspondingly according to the air supply requirement, which is not described again.

The length of the entire blower assembly 400 in the front-rear direction as a projection in the horizontal direction accounts for less than 49%, more preferably less than 40%, for example 39.2%, of the depth dimension of the cabinet 100 in the front-rear direction. The related size of the air channel is set according to the structural optimization of the space requirement and the air supply performance requirement, and the effect verification of a trial-manufactured product is obtained.

When the depth of the box is 480mm to 560mm, the length of the entire blower unit 400 in the horizontal direction in the front-rear direction is less than 235.2mm to 274.4 mm.

The foaming layer of the box 100 is disposed outside the cooling chamber 110 and the storage space 120, that is, outside the bottom inner container 101, and surrounds the bottom inner container 101, and the thickness of the foaming layer at the back of the storage space 120 accounts for less than 12%, further less than 11.5%, and may be set to 11%, for example. The thickness of the foamed layer is in conflict with the heat insulating performance. The thickness of the foaming layer is structurally optimized according to the space requirement and the heat insulation performance requirement, and the effect of a trial product is verified.

And an evaporator upper cover 130 transversely disposed in the bottom inner container 101 for partitioning the cooling chamber 110 and the storage space 120. The front of the evaporator upper cover 130 is located above the evaporator 340, substantially horizontally. And the rear portion of the evaporator upper cover 130 is positioned above the centrifugal fan 410 and is substantially inclined. The centrifugal fan 410 has a gap with a set distance from the evaporator upper cover 130. The air flow sucked by the centrifugal fan 410 enters the suction opening through a gap between the centrifugal fan 410 and the evaporator upper cover 130.

An air return cover 131 provided at the front end of the evaporator upper cover 130 and serving as the front wall of the cooling chamber 110; the horizontal distance from the front end of the return air cover 131 to the front end of the box 100 accounts for less than 8.2%, and may be set to less than 5.0%, for example, 4.7% of the depth of the box 100 in the front-rear direction. In the case where the depth of the case is 480mm to 560mm, the horizontal distance from the front end of the return air cover 131 to the front end of the case 100 is less than 39.36mm to 45.92 mm.

The return air cover 131 is formed with a front return air inlet 132 at a front side of the cooling compartment 110, which communicates with the freezing compartment, so that the return air flow of the freezing compartment enters the cooling compartment 110 through the front return air inlet 132 to exchange heat with the evaporator 340, thereby completing the air flow circulation between the cooling compartment 110 and the storage space 120. The distance between the return air cover 131 and the front of the box 100 is optimized according to the space requirement and the return air performance requirement, and the effect of the trial-manufactured product is verified.

Two front return air inlets 132 which are vertically distributed are formed at the front side of the return air cover 131, so that the visual appearance is attractive, and fingers or foreign matters of children can be effectively prevented from entering the cooling space; moreover, the two air return areas which are distributed up and down can enable the air return to flow through the evaporator 340 more uniformly after entering the cooling space, so that the problem that the front end face of the evaporator 340 is easy to frost can be avoided to a certain extent, the heat exchange efficiency can be improved, the defrosting period can be prolonged, and the energy conservation and the high efficiency are realized.

Due to the inclined arrangement of the evaporator 340, a certain space can be formed between the front top end of the evaporator 340 and the front parts of the return air cover 131 and the evaporator upper cover 130. The space area can be used as a frost accommodating space, and the air return area above the air return cover 131 can enter the evaporator 340 from the frost accommodating space, so that a part of space is reserved for frost, and the influence on the interior of the evaporator 340 and the refrigerating fan 410 is reduced. Further, the evaporator 340 may provide a special defrosting device for the frost containing space. And the frost containing space also solves the problem that the front end of the evaporator 340 is easy to freeze to a certain extent.

In the embodiment where the longitudinal partition 140 is provided, the number of the return air covers 131 may be two, and the return air covers are distributed in the lateral direction, left and right, and are separated by the longitudinal partition 140. The longitudinal partition 140 is disposed in the middle of the storage space 120, and divides the storage space 120 into two storage cavities arranged in the transverse direction, and each storage cavity is provided with an air return cover 131. The front of the longitudinal partition 140 is provided with an insulated vertical beam 141. The heat insulation vertical beam 141 is used for being matched with a door body of the storage cavity, and cold energy is prevented from being leaked from the edge of the door body.

The thickness of the heat insulating layer of the heat insulating vertical beam 141 in the front-rear direction accounts for less than 15.7% of the depth of the box body 100 in the front-rear direction, and further may be less than or equal to 8.4%; and the horizontal distance from the front end of the evaporator 340 to the heat-insulating vertical beam 141 accounts for less than 15.7% of the depth dimension of the box body 100 in the front-rear direction, and further may be set to be less than or equal to 7.7%.

In the case where the depth dimension of the box body is 480mm to 560mm, the thickness of the heat insulating layer of the heat insulating vertical beam 141 in the front-rear direction accounts for the depth dimension of the box body 100 in the front-rear direction, and the horizontal distance of the front end of the evaporator 340 to the heat insulating vertical beam 141 accounts for the depth dimension of the box body 100 in the front-rear direction may be set to be less than 75.36mm to 87.92mm, respectively.

The thickness of the insulating layer of the insulating vertical beam 141 and the position of the insulating vertical beam relative to the evaporator 340 are optimized according to the space requirement and the heat insulating performance requirement, and the effect of the trial-manufactured product is verified.

In addition, in order to make the depth of the whole refrigerator 10 meet the requirement, the rear end of the door body may be set to be less than or equal to 62 mm. Fig. 7 is a schematic structural view of the refrigerator 10 according to an embodiment of the present invention after the door 200 is closed. After the door 200 is closed and the storage space 120 is closed, the depth dimension (the overall thickness in the front-back direction) of the refrigerator 10 as a whole can be smaller than or equal to 572mm, so that the dimensional requirement of matching with the cabinet is met.

In the following, with reference to the dimensions indicated in fig. 5, 6 and 7, a specific embodiment of the refrigerator 10 having a depth dimension of the box 100 of 510mm is described, and the volume of the refrigerator 10 of this embodiment can be made equal to the volume of a conventional 550mm box, which is sufficient to achieve space utilization efficiency.

The depth L12 of the entire cabinet 100 is 510mm, and the thickness L11 of the door 200 is set to 62 mm. So that the overall thickness of the refrigerator 10 is only 572 mm.

The evaporator 340 of the refrigerator 10 has a depth dimension L9 of 152mm, a longitudinal dimension L10 of 75mm, a left-right lateral dimension (not labeled) of 470mm, and an inclination angle α with respect to a horizontal plane of 7.5 degrees. The inclination angle of the bottom wall portion of the bottom liner 101 supporting the evaporator 340 with respect to the horizontal plane is also set to 7.5 degrees accordingly. The evaporator 340 is inclined so that the length L3 of the projection in the horizontal direction along the front-rear direction is 162mm, although the length in the front-rear direction is increased, the inclination makes the arrangement of other components in the cooling chamber 110 more reasonable, and the actual airflow field analysis proves that the wind circulation efficiency is higher and the drainage is more smooth. Meanwhile, the evaporator 340 is obliquely arranged, so that the evaporator 340 can be prevented from being too close to the heat insulation vertical beam 141, and frost is prevented from blocking a return air inlet.

The centrifugal fan 410 is also inclined, and the inclination angle beta of the centrifugal fan 410 relative to the horizontal plane can be 36.7 degrees, and the inclination angle of the bottom wall part of the bottom liner 101 for supporting the centrifugal fan 410 relative to the horizontal plane is also correspondingly set to 36.7 degrees.

From front to back, the dimensions and relative relationships of the components within the cooling compartment 110 and the storage space 120 are set as follows: the horizontal distance L8 between the front end of the return hood 131 and the front end of the box 100 is 24 mm. The thickness L1 of the insulating layer of the insulating vertical beam 141 in the front-rear direction was set to 42 mm. The horizontal distance L4 from the front end of the centrifugal fan 410 to the evaporator 340 is 22mm, so as to save the depth distance between the evaporator 340 and the fan 410 to the maximum extent under the condition of ensuring that the blades of the centrifugal fan 410 do not frost. The thickness L6 of the vertical section of the air supply duct 420 extending upward in the front-rear direction is 25 mm. So that the length L5 of the horizontal projection of the wind module in the front-rear direction is ensured to be 200 mm. The thickness L7 of the foaming layer on the back of the storage space 120 is 56 mm. The distance of the gap between the centrifugal fan 410 and the evaporator upper cover 130 may be set to 30 mm.

Accordingly, it can be concluded that L8 is 4.7% of L12, L6 is 4.9% of L12, L1 is 8.2% of L12, L2 is 7.5% of L12, L3 is 29.8% of L12, L4 is 4.3% of L12, L5 is 39.2% of L12, and L7 is 11% of L12. The above-mentioned size, relative position, proportional relation are all accomplished on the basis of strict demonstration and accurate calculation, under the very harsh condition of dimensional requirement, have satisfied the requirement of each performance index. The above dimensions and relative positions cooperate to achieve the corresponding functions. Any of the above-described dimensional and relative positional variations may result in an inability to meet or even function at one aspect of the refrigerator 10. Those skilled in the art will appreciate that the specific values described above are subject to certain assembly and manufacturing tolerances.

The bottom of the cabinet 100 of the evaporator bottom-mounted refrigerator 10 of the present embodiment is provided with the return air cover 131, the evaporator 340, the cooling fan 410, the air supply duct 420, and the foaming layer in this order from front to back. Wherein evaporator 340 and refrigeration fan 410 are the slope setting, have improved air supply efficiency on the one hand, and on the other hand also makes the drainage more smooth and easy.

FIG. 8 is a cross-sectional top view of the bottom liner in the evaporator bottom mounted refrigerator 10 showing the bottom upper surface of the bottom liner according to one embodiment of the present invention; and FIG. 9 is a schematic longitudinal sectional view of a lower portion of a cabinet in an evaporator bottom type refrigerator 10 according to an embodiment of the present invention.

The bottom wall of the bottom liner 101 can include: a first support 170, a lower recess 171, a second support 172, and a third support 173. Wherein the first support portion 170 is disposed obliquely downward from the front end of the bottom wall from front to rear. The lower recess 171 is provided at the rear side of the first support part and is disposed to be inclined upward from the lateral middle part to both sides, so that a drain opening 177 is opened at the lateral middle part, and the drain opening 177 is used to drain water (condensed water, defrosted water, etc.) in the cooling chamber 110. The second supporting portion 172 is disposed to be inclined upward from the rear end of the drain opening from the front to the rear, and the evaporator 340 is placed on the second supporting portion 172, and the front end of the evaporator 340 is abutted against the first supporting portion 170, so that the water appearing thereon is gathered at the lower recess 171, and the position of the drain opening 177 in the front-rear direction along the cabinet 100 is located at the front region of the evaporator 340.

The position of the drain opening 177 is an area located substantially in the lateral middle, and the area located in the lateral center is not strictly required. In some embodiments, the drain opening 177 may be positioned with the lateral middle appropriately offset to one side.

The inclination angle of both sides of the lower recess 171 may be 7 degrees or more so that water of both sides is gathered toward the drain opening 177. The configuration of the lower recess 171 can also minimize the distance between the evaporator 340 and the bottom wall of the bottom liner 101, so that the heat of the heating wires of the evaporator 340 can be transferred to the lower recess, and the defrosting water can effectively flow into the water outlet 177. The configuration of the lower recess 171 utilizes the heat of the heater wire 161 of the evaporator 340 to defrost, thereby preventing ice from blocking the drain opening 177 and eliminating the need for an additional heater wire at the drain opening 177.

By the structure of the lower recess 171, a partial area of the inclined evaporator 340 can be suspended, so that defrosting and draining are facilitated. Because the evaporator 340 is obliquely arranged, the distance between the evaporator 340 and the water outlet 177 can be reduced, the space utilization rate of the refrigerator 10 is improved, and the area of the water outlet 177 can be heated by the heating wire 161 on the evaporator 340, so that the risk of frosting at the water outlet 177 is reduced.

The distance L13 from the evaporator 340 to the lowermost end of the lower recess 171 is less than or equal to 50mm, and more preferably, may be set to less than or equal to 25 mm.

The inclination angle of the second support 172 also facilitates the collection of water into the drain opening 177, thereby improving the smoothness of the drain. The ratio of the portion of the evaporator 340 attached to the second supporting portion 172 to the bottom surface of the evaporator 340 is greater than or equal to 0.6, and 2/3, 3/4, etc. may be provided, for example, so that the drain opening 177 may be positioned below the front portion of the evaporator 340. That is, the position of the drain opening 177 in the front-rear direction of the cabinet 100 is located in front of the evaporator 340, for example, the drain opening 177 may be located below a third (or a fourth) of the depth of the evaporator 340 as a whole.

The refrigerator 10 of the embodiment can prevent the air from flowing through the space between the bottom surface of the evaporator 340 and the water outlet 177 without flowing into the evaporator 340 by ensuring the bonding length between the bottom surface of the evaporator 340 and the second supporting portion 172, thereby increasing the path length of the air flowing through the evaporator 340 and further increasing the heat exchange efficiency of the evaporator 340.

The cabinet 100 forms a cabinet 190 at the rear below the bottom inner container 101, and the refrigerator 10 may further include an evaporation pan 191 and a drain 192. The evaporating dish 191 is arranged in the compressor compartment 190; the drain pipe 192 extends from the drain opening 177 downward from the front to the rear to the evaporation pan 191.

The compressor compartment 190 may be used to arrange a condenser 320 as well as a compressor 310. The condenser 320 may be disposed above the evaporation pan 191 in some embodiments. A heat dissipation fan (not shown) may be disposed within the compressor compartment 190 to generate a heat dissipation airflow to dissipate heat generated by the condenser 320 and the compressor 310.

In the solution of this embodiment, by providing the evaporation pan 191 at the bottom of the press chamber 190, the drain pipe 192 extends from the drain opening 177 to the evaporation pan 191 in a downward inclination from front to back, so that the evaporation pan 191 collects the defrosting water flowing out from the drain pipe 192, and then the defrosting water in the evaporation pan 191 is evaporated by using the heat generated in the condenser 320.

The inclination angle of the drain pipe 192 may be 5 ° or more and 15 ° or less, and more preferably, may be 5 ° or more and 10 ° or less. For example, it may be set to 7 °. The scheme of this embodiment sets up the inclination angle of drain pipe 192 to be more than or equal to 5 and less than or equal to 15 to make the flow of the water of defrosting in drain pipe 192 more smooth, guarantee simultaneously that drain pipe 192 does not occupy too much space in the direction of height. The inclination angle of the drain pipe 192 is structurally optimized according to the drainage performance requirement and the space requirement, and the effect of the trial product is verified.

In other embodiments, a water pump may be added to the drain to actively pump water to the evaporation pan 191. In these embodiments, the inclination angle of the drain pipe 192 may not be limited.

The third support part 173 is provided to be inclined upward from the rear of the second support part 172 from the front to the rear at an angle greater than that of the second support part 172. The cooling fan 410 is fixed to the third support 173. Such a tilted structure may also provide room for the provision of nacelle 190.

The structure of the cooling chamber 110 and the inclined arrangement of the evaporator 340 and other components ensure smooth and sufficient heat exchange of air flow, reduce frost to a certain extent, and improve defrosting and draining efficiency.

Fig. 10 is an exploded view of an air supply assembly 400 in the evaporator bottom type refrigerator 10 according to an embodiment of the present invention. Supply air duct 420 may be defined by a duct back 422 and a rear wall of bottom liner 101. Air duct back 422 is disposed in front of the rear wall of bottom liner 101 and is substantially parallel to the rear wall of bottom liner 101. The air supply outlet 421 is opened on the air duct back plate 422.

The centrifugal fan 410 may include a volute disposed at the rear of the cooling chamber 110 to be inclined upward from the front to the rear, and an impeller 411 disposed in the volute with its axis opposite to the suction opening 412.

The centrifugal fan 410 may discharge the air flow from the suction opening 412 in a radial direction, and the refrigerant air flow discharged into the supply air duct 420 may be discharged into the storage space 120 from the supply air opening 421 to exchange heat with the hot air in the storage space 120, thereby reducing the temperature of the storage space 120. The air in the storage space 120 may flow back to the cooling compartment 110 through the front return air inlet 132 of the return air cover 131, thereby forming a circulating air flow path.

In some embodiments, the volute includes a blower bottom shell 424 and a blower top cover 423. The blower bottom case 424 is fixed to the rear portion of the bottom wall of the bottom inner container 101, that is, fixed to the third supporting portion 173. The upper fan cover 423 extends into the cooling chamber 110 from the lower end of the air duct back plate 422 obliquely downward, and covers and buckles the bottom fan case 424. The air inlet 412 is opened at the center of the upper cover 423 of the blower. The fan bottom shell 424 is connected with the fan upper cover 423 and then can obliquely extend downwards into the cooling chamber 110, and an air outlet is formed at the position where the rear end of the fan bottom shell 424 is connected with the air duct back plate 422. The blower bottom case 424 and the blower top cover 423 may be connected together in a snap-fit manner.

The blower upper cover 423 and the air duct back plate 422 can also be provided as an integral molding piece. This approach is distinguished from prior art fan configurations. In the prior art, the fan volute and the air duct plate are generally independently arranged components, and installation personnel generally need to respectively install the components during assembly. This results in a complicated mounting process and increased cost, which is not favorable for mass production. In this embodiment, the air duct back plate 422 and the fan upper cover 423 are integrally formed, and when the air duct back plate is installed, the fan upper cover 423 is directly installed into the cooling chamber 110 to be connected with the fan bottom shell 424, so that the installation process can be simplified, the cost can be reduced, and the whole air supply air duct 420 structure is more stable.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. An evaporator bottom-mounted refrigerator comprising:

the refrigerator comprises a refrigerator body, a door body and a refrigerator door, wherein the refrigerator body is provided with a bottom inner container, the bottom inner container is limited with a cooling chamber and a storage space, the cooling chamber is arranged below the storage space, and the depth of the refrigerator body in the front-back direction is 480 mm-560 mm;

a refrigeration system including an evaporator disposed at an incline within the cooling compartment and configured to provide cooling energy to the storage space.

2. The evaporator bottom mounted refrigerator of claim 1, wherein

The evaporator is arranged at the front part of the cooling chamber in an upward manner from front to back; and the evaporator bottom-mount refrigerator further comprises:

air supply assembly, set up in the rear of evaporimeter, it includes:

and the air supply duct is arranged on the rear wall of the bottom inner container, is communicated with the air outlet of the refrigeration fan and is provided with at least one air supply outlet, and the air supply outlet is used for communicating the air supply duct and the storage space so as to convey the refrigeration airflow to the storage space.

3. The evaporator bottom mounted refrigerator of claim 2, wherein

The refrigeration fan is a centrifugal fan, an air suction opening of the refrigeration fan faces the front upper side, and an air outlet of the refrigeration fan is positioned at the rear end of the centrifugal fan and connected with the lower end of the air supply duct.

4. The evaporator bottom mounted refrigerator of claim 3, wherein

The length of the horizontal projection of the evaporator along the front-back direction accounts for less than 41% of the depth of the box body along the front-back direction;

5. The evaporator bottom mounted refrigerator of claim 2, wherein the bottom wall of the bottom liner comprises:

a first support portion which is provided obliquely downward from the front end of the bottom wall from front to back;

a second support part which is provided from the rear end of the water discharge opening to incline upwards from the front to the back and is used for supporting the water discharge opening

The evaporator is placed on the second supporting portion, and the front end of the evaporator abuts against the first supporting portion, so that water appearing thereon is gathered in the lower recess, and the drain port is located in front of the evaporator along the front-rear direction of the cabinet.

6. The evaporator bottom mounted refrigerator of claim 5, wherein

The cabinet forms a cabin at the rear of the lower part of the bottom inner container, and the refrigerator further comprises:

the evaporating dish is arranged in the press cabin;

and the water discharge pipe obliquely extends from the water discharge port to the evaporation pan from front to back, and the inclination angle of the water discharge pipe is more than or equal to 5 degrees and less than or equal to 15 degrees.

7. The evaporator bottom mounted refrigerator of claim 5 wherein the bottom wall of the bottom liner comprises:

and the third supporting part is arranged from the front end to the back end of the second supporting part in an inclined manner, and the refrigerating fan is fixed on the third supporting part.

8. The evaporator bottom mounted refrigerator of claim 1, further comprising:

the evaporator upper cover is transversely arranged in the bottom inner container and is used for separating the cooling chamber from the storage space;

and the air return cover is arranged at the front end of the evaporator upper cover and is used as the front wall of the cooling chamber.

9. The evaporator bottom mounted refrigerator of claim 8, wherein

The horizontal distance from the front end of the air return cover to the front end of the box body accounts for less than 8.2% of the depth dimension of the box body in the front-back direction.

10. The evaporator bottom-mounted refrigerator of claim 1, wherein the cabinet further comprises:

the longitudinal partition plate is arranged in the middle of the storage space and divides the storage space into two storage cavities which are transversely arranged, and the front part of the longitudinal partition plate is provided with a heat-insulating vertical beam.

11. The evaporator bottom mounted refrigerator of claim 10, wherein

The thickness of the heat insulation layer of the heat insulation vertical beam along the front and back direction accounts for less than 15.7% of the depth dimension of the box body along the front and back direction; and is

The horizontal distance from the front end of the evaporator to the heat insulation vertical beam accounts for less than 15.7% of the depth of the box body in the front-back direction.