CN218884333U - Centrifugal fan, refrigeration module and freezing and refrigerating equipment - Google Patents

Abstract

The utility model belongs to freezing refrigeration plant field specifically provides a centrifugal fan, refrigeration module and freezing refrigeration plant. The utility model discloses aim at solving the casing of the interior air supply fan of current refrigeration module and be out of shape the problem easily because of the extrusion that receives box module gravity. Therefore, the utility model discloses a centrifugal fan includes the spiral case and installs impeller in the spiral case, be provided with fan import and fan export on the spiral case, be provided with the support column in the spiral case, the support column is used for preventing on the spiral case with two lateral walls that the rotation axis of impeller is relative are close to each other. The utility model discloses the spiral case that can avoid centrifugal fan effectively is because of being out of shape by the effect of box module gravity.

Description

Centrifugal fan, refrigeration module and freezing and refrigerating equipment

Technical Field

The utility model belongs to freezing refrigeration plant field specifically provides a centrifugal fan, refrigeration module and freezing refrigeration plant.

Background

The existing refrigerators in the same series have the same overall shape, internal compartment number and internal compartment volume, and the refrigerators in different types often only have different colors and shell materials. Due to different patterns and decoration styles of different families and different preferences of different users, the existing refrigerator cannot meet the requirements of the majority of users. And manufacturers cannot provide customized refrigerators for users according to the requirements of the users. The reason is that the existing refrigerator generally integrates a refrigeration system on a refrigerator body of the refrigerator, so that manufacturers need to redesign the structure and layout of the refrigerator according to the needs of users, and more molds need to be newly opened for this reason, so that the production cost of the refrigerator is higher, and the production period is longer.

In order to overcome the above problems, the prior art proposes solutions for modular refrigerators. Specifically, the refrigerator is designed as two separate modules-a cabinet module and a refrigeration module. The refrigeration module can adapt to various different box body modules, so that the refrigeration module and the corresponding box body module are assembled together according to the customized requirements of users.

In order to realize the refrigeration of the box body module by the refrigeration module, cold air in the refrigeration module needs to be introduced into the box body module. In conventional designs, the air supply outlet of the refrigeration module is typically arranged on the top side of the refrigeration module, but this would lead to the following problems. The air supply outlet of the refrigeration module is easy to deform under the action of the weight of the box body module, the sealing of the air supply outlet is affected, the air supply fan in the box body module can be extruded even when the sealing is serious, the shell of the air supply fan is deformed, and then the impeller of the air supply fan rubs the shell of the air supply fan to increase noise.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the problem that the casing of air supply fan warp easily in the current refrigeration module because of the extrusion that receives box module gravity.

In order to achieve the above object, the present invention provides a centrifugal fan in a first aspect, including a volute and an impeller installed in the volute, the volute is provided with a fan inlet and a fan outlet, the volute is provided with a support column, the support column is used for preventing two side walls opposite to a rotation axis of the impeller on the volute are close to each other.

Optionally, the volute further comprises an upper volute and a lower volute, the fan inlet being formed on the upper volute, the fan outlet being formed between the upper volute and the lower volute; the support column is fixedly connected with or integrally manufactured with one of the upper volute and the lower volute, and the support column abuts against the other of the upper volute and the lower volute.

Optionally, a positioning structure is provided on the other of the upper volute and the lower volute, and the positioning structure is plugged with the support column.

Optionally, the positioning structure is a hollow positioning sleeve, and the supporting column is inserted into the positioning sleeve.

Optionally, the support post is disposed between the impeller and the fan outlet.

Optionally, at least one of the upper and lower volutes is provided with a plurality of fixed posts for mounting the impeller, the one of the fixed posts closest to the fan outlet being located between the support post and the impeller in the flow path of the air in the volute.

Optionally, the support column is parallel to the axis of rotation of the impeller; or the support column is parallel to the air outlet direction at the outlet of the fan.

The utility model provides a refrigeration module in the second aspect, include:

the refrigerator comprises a shell, a compressor bin and a refrigerating chamber are limited in the shell, and an air return opening and an air supply opening which are communicated with the refrigerating chamber are formed in the shell;

a refrigeration system comprising a compressor and a condenser disposed within the compressor compartment, the refrigeration system further comprising an evaporator disposed within the refrigeration compartment;

a heat dissipation fan disposed within the press bin;

the centrifugal fan according to any one of the first aspect, which is disposed in the refrigerating compartment and on the rear side of the evaporator, wherein the scroll casing is fluidly connected to the air supply opening through a portion where the fan outlet is located.

Optionally, the part where the fan outlet is located is inserted into the air supply outlet, so that the fan outlet is exposed; and/or the bottom side of the top plate of the refrigerating compartment is provided with reinforcing ribs which extend downwards and surround the air supply opening, and the bottom surfaces of the parts of the reinforcing ribs on the left side and the right side of the air supply opening are parallel to and/or abutted against the bottom plate of the refrigerating compartment.

The utility model provides a freezing refrigeration plant in the third aspect, including box module and second aspect refrigeration module, the box module be injectd the storing room, with the air supply passageway of storing room intercommunication and with the return air passageway of storing room intercommunication, the air supply passageway is kept away from through it the one end of storing room with refrigeration module fan export fluid coupling, the return air passageway is kept away from through it the one end of storing room with refrigeration module the return air inlet fluid coupling.

Based on the foregoing description, it can be understood by those skilled in the art that, in the foregoing technical solution of the present invention, by providing the support column in the volute and using the support column to prevent the two side walls of the volute opposite to the rotation axis of the impeller from approaching each other, the structural strength of the volute is enhanced in the presence of the support column, so that the deformation resistance of the volute is improved. Therefore, the utility model discloses a freezing refrigeration plant can avoid centrifugal fan's spiral case to warp because of the effect that receives box module gravity effectively.

Further, one of the fixed columns, which is closest to the outlet of the fan, is located between the support column and the impeller on the flow path of air in the volute, so that the wind resistance caused by the fixed columns and the support column is reduced.

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

In order to more clearly illustrate the technical solution of the present invention, some embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art will appreciate that elements or portions of the same reference number identified in different figures are the same or similar; the drawings of the present invention are not necessarily drawn to scale relative to each other. In the drawings:

fig. 1 is an isometric view of a refrigeration unit (door not shown) according to some embodiments of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view of the cold storage appliance of FIG. 1 taken along the line A-A;

FIG. 3 is a side view of a tank module of the refrigeration chiller of FIG. 1 (housing not shown);

FIG. 4 is a right front upper perspective view of the tank module of FIG. 3;

FIG. 5 is a front left upper isometric view of the bottom of the tank module of FIG. 3;

FIG. 6 is a front right upper isometric view of a refrigeration module of the refrigeration chiller of FIGS. 1 and 2;

fig. 7 is a schematic diagram of the internal components of a refrigeration module according to some embodiments of the present invention;

FIG. 8 is a schematic view of the primary space defined by the housing of the refrigeration module of FIG. 6 (left front upper axial view);

FIG. 9 is a schematic front right upper perspective view of the primary space defined by the housing of the refrigeration module of FIG. 6;

fig. 10 is a left rear upper axonometric view of a refrigeration module according to some embodiments of the invention;

figure 11 is an isometric cross-sectional view of the refrigeration module of figure 10 taken along the direction B-B;

FIG. 12 is a plan sectional view of the refrigeration module of FIG. 10 taken along the direction B-B;

fig. 13 is a left front bottom isometric view of a refrigeration module in accordance with some embodiments of the present invention;

figure 14 is an isometric cross-sectional view of the refrigeration module of figure 10 taken along the direction C-C;

figure 15 is an isometric cross-sectional view of the refrigeration module of figure 10 taken along direction D-D;

FIG. 16 is a plan sectional view of the refrigeration module of FIG. 10 taken along the direction D-D;

fig. 17 is an exploded view of a centrifugal fan according to some embodiments of the present invention;

fig. 18 is an isometric view of a centrifugal fan in some embodiments of the invention;

FIG. 19 is a cross-sectional view of the centrifugal fan of FIG. 18 taken along the direction P-P;

figure 20 is a cross-sectional view of the housing of the refrigeration module of figures 10 to 16;

figure 21 is an isometric cross-sectional view of the refrigeration module of figure 16 taken along the direction E-E;

fig. 22 is a front view of a refrigeration module in accordance with some embodiments of the present invention;

FIG. 23 is a first isometric view of the air deflection member of the refrigeration module of FIG. 16;

fig. 24 is a second axial view of the air deflection member of the refrigeration module of fig. 16.

Detailed Description

It is to be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present invention, and not all embodiments of the present invention, and the part of the embodiments are intended to explain the technical principle of the present invention and not to limit the scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by a person skilled in the art without any inventive work should still fall within the scope of the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Further, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, it should be noted that in the description of the present invention, the terms "cold" and "heat" are two descriptions of the same physical state. That is, the higher the "cold" a certain object (e.g., evaporator, air, condenser, etc.) has, the lower the "heat" it has, and the lower the "cold" it has, the higher the "heat" it has. A certain target object can release heat while absorbing cold, and can absorb heat while releasing cold. Some object stores "cold" or "heat" in order to keep the object at its current temperature. "refrigeration" and "heat absorption" are two descriptions of the same physical phenomenon, i.e., a target (e.g., an evaporator) absorbs heat while it is refrigerating.

The utility model discloses in, freezing refrigeration plant can have freezing function and cold-stored function simultaneously, also can only have freezing function, can also only have cold-stored function. The freezing and refrigerating equipment can be a refrigerator, a freezer or a freezer.

As shown in fig. 1 and 2, in some embodiments of the present invention, a refrigeration apparatus includes a cabinet module 100 and a refrigeration module 200. The refrigeration module 200 serves to receive the gas from the tank module 100, cool the received gas, and then supply the cooled gas to the tank module 100.

During production, the tank module 100 and the refrigeration module 200 may be manufactured separately and then assembled and secured together.

As shown in fig. 1 and 2, in some embodiments of the present invention, the box module 100 defines a storage compartment 101, and the storage compartment 101 is used for receiving cold air from the refrigeration module 200 to refrigerate the food therein. Further, the storage compartment 101 comprises a first storage compartment 1011 and a second storage compartment 1012.

In some embodiments of the present disclosure, the first storage compartment 1011 is a refrigeration compartment and the second storage compartment 1012 is a freezing compartment.

In addition, in other embodiments of the present invention, a person skilled in the art may set the first storage chamber 1011 as a freezing chamber and the second storage chamber 1012 as a refrigerating chamber as required; alternatively, the first storage compartment 1011 and the second storage compartment 1012 are both provided as a freezing compartment or a refrigerating compartment; alternatively, at least one of the first storage compartment 1011 and the second storage compartment 1012 may be provided as a temperature-changing compartment.

As shown in fig. 2, a first air outlet 10111 is disposed on a side wall of the first storage compartment 1011, so that air in the first storage compartment 1011 flows to the refrigeration module 200 through the first air outlet 10111. The air in the second storage compartment 1012 flows from the opening of the second storage compartment 1012 to the refrigeration module 200.

Further, although not shown in the drawings, in some embodiments of the present invention, the box module 100 further includes a first door corresponding to the first storage compartment 1011 and a second door corresponding to the second storage compartment 1012. The first door body is used for shielding the first storage compartment 1011 to prevent outside air from entering the first storage compartment 1011. The second door body is used for shielding the second storage compartment 1012 to prevent outside air from entering the second storage compartment 1012; the second door body is also used for shielding the top of the refrigeration module 200, specifically shielding a front air return port 21021 (shown in fig. 6) of the refrigeration module 200. Further, the inner side surface of the second door body is provided with a sinking groove having a portion aligned with and communicating with the second storage compartment 1012 and a portion aligned with and communicating with the front return air inlet 21021 of the refrigeration module 200, so that the air in the second storage compartment 1012 flows to the refrigeration module 200 through the sinking groove.

In addition, in other embodiments of the present invention, a person skilled in the art may also provide a channel on the second door body as needed, and align and communicate one end of the channel with the second storage compartment 1012 and the other end of the channel with the front air return port 21021 of the refrigeration module 200.

As shown in fig. 2 to 5, in some embodiments of the present invention, the case module 100 includes a first inner container 110, a second inner container 120, a blowing duct 130 and a return duct 140 disposed in a housing (not marked in the figures) thereof. A first storage chamber 1011 is formed in the first inner container 110, and a second storage chamber 1012 is formed in the second inner container 120. In other words, the first storage compartment 1011 is delimited by the first liner 110, and the second storage compartment 1012 is delimited by the second liner 120. An air supply channel 1301 is defined in the air supply pipeline 130, and the air supply channel 1301 is communicated with the first storage chamber 1011 and the second storage chamber 1012 respectively, so that the box body module 100 receives cold air from the refrigeration module 200 through the air supply channel 1301 and conveys the cold air to the first storage chamber 1011 and the second storage chamber 1012.

As shown in fig. 4 and fig. 5, a first air return channel 1401 is formed in the air return pipeline 140 (as shown by a dotted line in fig. 4), and a top end of the first air return channel 1401 is communicated with the first air outlet 10111, or the first air outlet 10111 forms an inlet of the first air return channel 1401; the bottom end of the first air return channel 1401 is provided with an air outlet 14011 which is in butt joint with the refrigeration module 200, so that the box body module 100 can convey the air in the first storage compartment 1011 to the refrigeration module 200 through the first air return channel 1401.

As is apparent from fig. 2 to 4, the supply duct 130 and the return duct 140 are arranged in a vertical direction as a whole to reduce wind resistance. And the air blowing duct 130 includes a portion positioned in the first liner 110 and a portion positioned in the second liner 120.

In addition, in other embodiments of the present invention, the air supply line 130 and/or the air return line 140 may be inclined as needed by those skilled in the art. And, those skilled in the art may also dispose the air supply duct 130 outside the first and second inner containers 110 and 120, as necessary.

Furthermore, in some other embodiments of the present invention, the storage compartment 101 may be provided in any other feasible number, such as one, three, five, six, etc., as required by those skilled in the art. Those skilled in the art will appreciate that the tank module 100 may include other numbers of liners, such as one, three, four, etc., as desired. For example, the case module 100 may include only one inner container, and the inner container may define one or more storage compartments. When the inner container defines only one storage compartment, the storage compartment may deliver air therein to the refrigeration module 200 in the manner of the first storage compartment 1011 or the second storage compartment 1012 as described above. When the inner container defines a plurality of storage compartments, the storage compartment at the bottom delivers the air therein to the refrigeration module 200 in the manner of the second storage compartment 1012 as described above; the other storage compartments deliver the air therein to the refrigeration module 200 by using the first storage compartment 1011 as described above, and each storage compartment may correspond to one return air duct 140 (each return air duct 140 corresponds to one side return air inlet 21022 (as shown in fig. 6)), or share one return air duct 140.

As shown in fig. 4, in some embodiments of the present invention, the cabinet module 100 further defines a receiving cavity 102 at the bottom thereof, and the receiving cavity 102 is used for receiving the refrigeration module 200. The receiving cavity 102 has a front opening (not labeled) and a bottom opening (not labeled) for moving the cabinet module 100 from the rear side of the refrigeration module 200 to above the refrigeration module 200 to secure the cabinet module 100 and the refrigeration module 200 together after the cabinet module 100 is moved to a position to mate with the refrigeration module 200.

As shown in fig. 6 and 7, in some embodiments of the present invention, the refrigeration module 200 includes a housing 210, and the refrigeration module 200 further includes a refrigeration system 220, a heat dissipation fan 230, a centrifugal fan 240, and an evaporation pan 250 within the housing 210.

As shown in fig. 6, the casing 210 is provided with a supply port 2101 and a return port 2102. The air return ports 2102 include a front air return port 21021 and a side air return port 21022.

As shown in fig. 2, in a state where the refrigerating and freezing apparatus is assembled, the air blowing port 2101 is abutted against the air blowing duct 130 of the cabinet module 100, so that the refrigerating module 200 blows air to the air blowing duct 130 through the air blowing port 2101, and the air blowing duct 130 sends the cold air received by the air blowing duct to the storage compartment 101.

As shown in fig. 2 and 3, in the assembled state of the freezer-refrigerator, the front air return port 21021 and the second storage compartment 1012 are located at the front side of the freezer-refrigerator and communicate with each other through a sink or channel formed in the second door body (as described above), so that the refrigeration module 200 receives air from the second storage compartment 1012 through the front air return port 21021. The side air return port 21022 interfaces with the return air duct 140 on the cabinet module 100 so that the refrigeration module 200 receives air from the first storage compartment 1011 through the side air return port 21022.

As shown in fig. 7-9, in some embodiments of the present invention, the housing 210 defines therein a compressor compartment 2103, a refrigeration compartment 2104, a heat dissipation air intake duct 2105 and a heat dissipation air outtake duct 2106. Wherein, heat dissipation inlet duct 2105 and heat dissipation air-out passageway 2106 communicate with press storehouse 2103 respectively to extend to the front end of casing 210 from press storehouse 2103 respectively.

It should be noted that, for the convenience of understanding of those skilled in the art, fig. 8 and fig. 9 each schematically show the relative position relationship and distribution of the four spaces of the press chamber 2103, the refrigerating chamber 2104, the heat dissipation air inlet duct 2105 and the heat dissipation air outlet duct 2106.

As can be seen from fig. 8 and 9, the press chamber 2103, the heat dissipation air inlet duct 2105 and the heat dissipation air outlet duct 2106 are all located below the refrigerating compartment 2104, and the outer contours of the projections of the press chamber 2103, the heat dissipation air inlet duct 2105 and the heat dissipation air outlet duct 2106 on the horizontal plane are located outside the projection of the refrigerating compartment 2104 on the horizontal plane. In other words, if the press chamber 2103, the heat dissipation air inlet duct 2105 and the heat dissipation air outlet duct 2106 are considered as a whole, the projection of the refrigeration compartment 2104 on the horizontal plane is located inside the projection on the whole horizontal plane.

As shown in fig. 8 and 9, the air blowing port 2101, the front air return port 21021 and the side air return port 21022 communicate with the cooling compartment 2104, respectively. The air supply port 2101 is located at the rear upper side of the cooling compartment 2104, the front air return port 21021 is located at the front upper side of the cooling compartment 2104, and the side air return port 21022 is located at the side upper side of the cooling compartment 2104.

As shown in fig. 7, in some embodiments of the present invention, the refrigeration system 220 includes a compressor 221, a high temperature pipe 222, a condenser 223, a filter drier 224, a capillary tube 225, an evaporator 226, and a return pipe 227, which are connected end to end and thus form a closed loop.

As shown in fig. 7 and 10 to 12, the compressor 221, the condenser 223, and the drying filter 224 are disposed in the press chamber 2103, the high temperature pipeline 222 is distributed in the press chamber 2103 and the heat dissipation air outlet channel 2106, and the evaporator 226 is disposed in the cooling chamber 2104. Most of the tube sections of the capillary tube 225 and the return tube 227 are located outside of the press chamber 2103 and the refrigeration compartment 2104. Alternatively, one skilled in the art may position all of the capillary tube 225 and/or the return tube 227 outside of the press chamber 2103 and the refrigeration compartment 2104, as desired.

As shown in fig. 7 and 14 to 21, the heat dissipation fan 230 is disposed in the press bin 2103, the centrifugal fan 240 is disposed in the cooling compartment 2104, and the evaporation pan 250 is disposed in the heat dissipation air outlet channel 2106. At least a part of the portion of the high temperature pipeline 222 located in the heat dissipation air outlet channel 2106 is located in the evaporation pan 250, so that the high temperature pipeline 222 can heat the water in the evaporation pan 250 to promote the evaporation of the water.

As shown in fig. 14 to 21, in some embodiments of the present invention, a transverse gap 21071 is formed between the top plate of each of the press cabin 2103, the heat dissipation air inlet duct 2105 and the heat dissipation air outlet duct 2106 and the bottom plate of the refrigeration chamber 2104, and the transverse gap 21071 is filled with a thermal insulation material (e.g., a foaming agent or thermal insulation cotton). A front gap 21072 is formed between the bottom of the front plate of the cooling compartment 2104 and the adjacent outer plate of the housing 210, and the front gap 21072 is filled with a thermal insulation material (for example, a foaming agent or thermal insulation cotton). A longitudinal gap 21073 is formed between the left and right side plates of the refrigeration compartment 2104 and the outer side plate of the adjacent housing 210, and a thermal insulation material (for example, a foaming agent or thermal insulation cotton) is filled in the longitudinal gap 21073. It will be appreciated by those skilled in the art that the insulation material outside the refrigeration compartment 2104 can effectively insulate the refrigeration compartment 2104 from cold leakage.

Further, the respective top plates of the press bin 2103, the heat dissipation air inlet channel 2105 and the heat dissipation air outlet channel 2106 are parallel to the bottom plate of the refrigeration compartment 2104, so that the heat insulation materials in the transverse gap 21071, the front gap 21072 and the longitudinal gap 21073 are filled uniformly and uniformly in thickness, and the refrigeration compartment 2104 is uniformly insulated.

Optionally, the portions of the capillary tube 225 and the air return tube 227 outside of the press bin 2103 and the refrigeration compartment 2104 are disposed in the longitudinal gap 21073 and are wrapped in insulation. Preferably, the capillary tube 225 and the return tube 227 abut to allow heat exchange between the two. Further, since the temperature of the heat dissipation air intake passage 2105 is lower than that of the heat dissipation air exhaust passage 2106, the capillary tube 225 and the air return tube 227 are preferably arranged in one of the two longitudinal gaps 21073 near the heat dissipation air intake passage 2105.

As shown in fig. 15 and 16, the refrigeration module 200 further includes a pressure plate 260 disposed between the evaporator 226 and the ceiling of the refrigeration compartment 2104, the pressure plate 260 serving to press the evaporator 226 against the floor of the refrigeration compartment 2104, thereby securing the evaporator 226 obliquely within the refrigeration compartment 2104.

In some embodiments of the present invention, the evaporator 226 is disposed to incline upwards along the direction from the front to the back, and the included angle between the evaporator 226 and the horizontal plane ranges from 8 ° to 45 °, for example, 8 °, 12 °, 15 °, 20 °, 30 °, 45 °, and the like.

In addition, in other embodiments of the present invention, a person skilled in the art may also horizontally place the evaporator 226 on the premise that the projection area of the evaporator 226 on the horizontal plane is larger than the projection area of the evaporator 226 on the vertical plane, as required.

With continued reference to fig. 15 and 16, in some embodiments of the invention, the floor of the refrigeration compartment 2104 is provided with a drain hole 2108 below the front of the evaporator 226. Refrigeration module 200 also includes a drain 270 that communicates with drain port 2108 and extends from above and below into evaporation pan 250 such that drain 270 is able to quickly drain the defrosted water in refrigeration compartment 2104 into evaporation pan 250.

With continued reference to fig. 15 and 16, the centrifugal fan 240 is located between the evaporator 226 and the blower port 2101 on the path of the air flow, and both the evaporator 226 and the centrifugal fan 240 are obliquely arranged within the refrigerating compartment 2104.

As shown in fig. 15, the bottom plate of the refrigerating compartment 2104 includes, at the rear side of the water drain hole 2108, an evaporator support section 21041 and a fan support section 21042 extending obliquely rearward and upward, and the inclination angle (corresponding to a second included angle β described later) of the centrifugal fan support section 21042 is larger than that of the evaporator support section 21041, so that the inclination angle of the centrifugal fan 240 is larger than that of the evaporator 226.

As shown in fig. 17 to 19, in some embodiments of the present invention, the centrifugal fan 240 includes a scroll 241 and an impeller 242 mounted in the scroll 241. Wherein, the volute 241 includes an upper volute 2411, a lower volute 2412 and a support column 2413. The support column 2413 is fixedly connected to or integrally formed with the lower scroll 2412, and in a state where the upper and lower scrolls 2411 and 2412 are mounted together, the support column 2413 abuts against the upper scroll 2411. Alternatively, one skilled in the art may also fixedly connect or integrally manufacture the support pillar 2413 and the upper volute 2411, so that the support pillar 2413 abuts against the lower volute 2412.

Preferably, the support posts 2413 are parallel to the axis of rotation of the impeller 242. Alternatively, the support column 2413 may be angled at an angle (e.g., 5 °, 10 °, 11 °, etc.) relative to the axis of rotation of the impeller 242, as desired by one skilled in the art. For example, the support column 2413 is parallel to the air outlet direction (the direction indicated by the arrow in fig. 19) at the fan outlet 24102. Further, the supporting columns 2413 may be any other feasible structure, such as a sheet-like structure or a plate-like structure, besides the columnar structure shown in the figure.

As will be understood by those skilled in the art, the supporting column 2413 serves to prevent two sidewalls of the scroll case 241 opposite to the rotation axis of the impeller 242 from approaching each other, and particularly, serves to prevent the upper scroll case 2411 and the lower scroll case 2412 from approaching each other, thereby increasing the strength of the scroll case 241 and preventing the scroll case 241 from being deformed by an external force and interfering with the rotating impeller 242.

As shown in fig. 19, the upper scroll case 2411 is provided with a positioning structure 2414 matching with the support column 2413, and the positioning structure 2414 is inserted into the support column 2413 to prevent the support column 2413 from being dislocated. Preferably, the locating structure 2414 is a hollow locating sleeve into which the support column 2413 is inserted. In addition, the positioning structure 2414 may be configured as any other feasible structure, such as a semicircular or C-shaped ring, a groove formed on the upper volute 2411, etc., as required by those skilled in the art.

As will be appreciated by those skilled in the art, if the support column 2413 is fixedly attached to or integrally formed with the upper volute 2411, the positioning structure 2414 needs to be disposed on the lower volute 2412 to ensure that the support column 2413 is matched with the positioning structure 2414.

As shown in fig. 17 and 19, in some embodiments of the present invention, a plurality of fixing posts 24121 and at least one water outlet 24122 are further disposed on the lower volute 2412. The fixing post 24121 is for fixing the impeller 242, and the water discharge port 24122 is located at the bottom of the lower scroll 2412 for discharging the water in the scroll 241. In addition, one skilled in the art may also dispose at least a portion of the plurality of fixing posts 24121 on the upper scroll 2411 as needed.

As shown in fig. 17-19, the centrifugal fan 240 further includes a fan inlet 24101 formed on the upper volute 2411 and a fan outlet 24102 formed between the upper volute 2411 and the lower volute 2412. Further, one skilled in the art may also position the blower outlet 24102 on the lower volute 2412 as desired.

As shown in fig. 17 and 19, the support column 2413 is disposed between the impeller 242 and the fan outlet 24102, and preferably one of the plurality of fixed columns 24121 closest to the fan outlet 24102 is located between the support column 2413 and the impeller 242 in the flow path of the air in the scroll 241. In other words, a line connecting the support column 2413 and one of the fixed columns 24121 adjacent thereto intersects the impeller 242 to reduce wind resistance of the support column 2413 and the one of the fixed columns 24121. The line preferably intersects the axis of rotation of the impeller 242.

As shown in fig. 19, the wind outlet direction at the fan outlet 24102 (as indicated by the arrow in fig. 19) is at a first angle α with the rotation axis of the impeller 242, so that the centrifugal fan 240 is obliquely installed at a second angle β with the rotation axis with respect to the horizontal plane (as shown in fig. 16, the centrifugal fan 240 is abutted with the centrifugal fan support section 21042), so that the wind outlet direction at the fan outlet 24102 is vertically upward. The first included angle α preferably ranges from 15 ° to 45 °, for example, 15 °, 22 °, 23.5 °, 25 °, 30 °, 40 °, 50 °, and the like. Further preferably, the sum of the first included angle α and the second included angle β is 90 °

As can be seen from fig. 16 and 19, the plane of the fan outlet 24102 is inclined downward in the radial direction of the impeller 242 so that the plane of the fan outlet 24102 is matched with the plane of the air blowing port 2101 (specifically, the rear inclined surface 213). In this regard, the rear slope 213 will be described in detail later.

As shown in fig. 15 and 16, a portion of the centrifugal fan 240 having the fan outlet 24102 is fitted into the air supply port 2101 so that the fan outlet 24102 is exposed.

Further, although not shown in the drawings, in some embodiments of the present invention, a sealing member is provided between the side plate of the casing 210 where the air blowing port 2101 is located and the centrifugal fan 240 to hermetically connect the two, so that all of the cold air blown out from the fan outlet 24102 flows through the air blowing port 2101. The sealing member may be any feasible member, for example, an annular structure made of any material such as sealing cotton, foam cotton, foaming agent, rubber, etc.

Returning to continue to refer to fig. 6, in some embodiments of the present invention, the top of the front plate of the housing 210 has an inwardly concave recessed structure 211, the bottom wall of the recessed structure 211 inclines backward from bottom to top, and the front air return port 21021 is formed on the bottom wall of the recessed structure 211. Preferably, the front air return port 21021 is a laterally extending strip-shaped opening.

Optionally, a spoiler (not labeled) is disposed on the front side plate of the housing 210, and the spoiler is inclined rearward from top to bottom from the top end of the front air return port 21021.

As shown in fig. 6, 10 and 21, the joint between the left side plate of the housing 210 and the top plate of the housing 210 and the joint between the right side plate of the housing 210 and the top plate of the housing 210 are both provided with side slopes 212. The side air return port 21022 is formed on the side inclined surface 212 on the right side of the casing 210 and is located in the front of the casing 210.

Correspondingly, the outlet end of the return air duct 140 on the tank module 100 is also inclined, so that the outlet end of the return air duct 140 is parallel to the side slope 212 on the right side of the casing 210.

Those skilled in the art will appreciate that by modifying the edges of the refrigeration module 200 that abut the tank module 100 on the left and right sides to be faces (i.e., the side slopes 212), the line junction contact area where the faces contact the opposing edges is larger, the pressure is lower, and the deformation is less likely to occur. Meanwhile, the side inclined plane 212, the left side plate or the right side plate of the housing 210, and the top plate of the housing 210 also jointly form a triangular structure, so that the structure corresponding to the side inclined plane 212 on the housing 210 is more stable, and deformation is less likely to occur.

As shown in fig. 22, the angle between the side slope 212 and the horizontal plane (the chain line in fig. 22) is denoted by γ. Preferably, γ is greater than 45 ° to reduce the vertical component of the force experienced by the side bevel 212. The force is the weight of the tank module 100 and its internal food material.

Returning to continue to refer to fig. 6, 10, and 21, the side air return ports 21022 are provided as strip-shaped openings extending in the front-rear direction to ensure that the side air return ports 21022 have a sufficiently large flow area. Further, the minimum distance between the edge of the side return air port 21022 and the edge of the side inclined surface 212 is not less than 1mm. That is, the minimum distance between the top edge of the side air return port 21022 and the top edge of the side inclined plane 212, the minimum distance between the bottom edge of the side air return port 21022 and the bottom edge of the side inclined plane 212, the minimum distance between the front edge of the side air return port 21022 and the front edge of the side inclined plane 212, and the minimum distance between the rear edge of the side air return port 21022 and the rear edge of the side inclined plane 212 are not less than 1mm, so that when the outlet end of the air return pipeline 140 on the case module 100 abuts against the side inclined plane 212 on the right side of the housing 210, the side air return port 21022 can be surrounded and sealed in the circumferential direction of the side air return port 21022. The minimum distance may be any feasible dimension of 1mm, 3mm, 8mm, etc.

Further, although not shown in the drawings, a gasket is attached to the side slope 212 having the side air return port 21022 (i.e., the side slope 212 on the right side of the refrigeration module 200) so that the side slope 212 is sealingly abutted against the tank module 100 via the gasket. Optionally, a gasket is attached to the other side inclined surface 212 to make the two side inclined surfaces 212 equal in height, so as to ensure that the tank module 100 does not incline to the left or right. In addition, a person skilled in the art may attach a gasket to a position corresponding to the side slope 212 on the tank module 100, as needed; alternatively, gaskets may be attached to the tank module 100 and the refrigeration module 200, respectively.

The utility model discloses in, sealed the pad can be arbitrary feasible, have the sealing action and can produce the seal structure of deformation, for example rubber pad, foam cotton, silica gel pad etc..

In addition, in other embodiments of the present invention, a person skilled in the art may also dispose the side air return port 21022 in the middle or rear portion of the housing 210 as required; and a side air return port 21022 is formed on the side inclined surface 212 of the left side of the case 210 as needed, and the first air outlet 10111 and the air return duct 140 of the tank module 100 are provided at the left side of the tank module 100.

In still other embodiments of the present invention, a person skilled in the art can set the side air return port 21022 on the side inclined plane 212 on the left side and the side inclined plane 212 on the right side of the housing 210, and set the first air outlet 10111 and the air return pipeline 140 on the left side and the right side of the box module 100, respectively, as required. Optionally, the two first air outlets 10111 and the two air return pipelines 140 correspond to the same storage chamber, or each first air outlet 10111 and each air return pipeline 140 correspond to one storage chamber respectively.

In still other embodiments of the present invention, one skilled in the art can set only one of the junction between the top plate and the left side plate of the casing 210 and the junction between the top plate and the right side plate of the casing 210 to the side inclined surface 212, and set the side air return port 21022 on the side inclined surface 212, as required.

As shown in fig. 21-24, in some embodiments of the present invention, the housing 210 further comprises a wind guide member 280, the wind guide member 280 being used for communicating the side air return port 21022 with the refrigeration compartment 2104. Specifically, the air guide member 280 penetrates through the longitudinal gap 21073, and the air outlet end of the air guide member 280 extends to the front side of the evaporator 226.

In some embodiments of the present invention, the side air return port 21022 may communicate with the air intake end of the air guide member 280, or may be formed on the air intake end of the air guide member 280.

As shown in fig. 23 and 24, the air guide member 280 includes a lateral opening portion 281 and a longitudinal opening portion 282, and an air inlet is provided at a top portion of the lateral opening portion 281, and an opening direction of the air inlet is inclined upward in a lateral direction (a left-right direction of the refrigeration module 200). The air inlet is also provided with a rectangular opening or a strip-shaped opening extending along the front-back direction. One side of the longitudinal opening portion 282 in the lateral direction is provided with an air outlet which is provided as a rectangular mouth or a bar-shaped mouth extending in the vertical direction. The air outlet of the air guide member 280 extends to the front side of the evaporator 226 so that the entire airflow blown out from the air guide member 280 is blown to the front side of the evaporator 226.

As shown in fig. 6, 10, 14, 15 and 21, a rear inclined plane 213 is provided at a junction between the rear side plate of the casing 210 and the top plate of the casing 210, the air blowing port 2101 is formed at the center of the rear inclined plane 213, and the air blowing port 2101 is a rectangular opening extending in the lateral direction. Further, the blower port 2101 may be disposed at other locations on the rear slope 213 and in any other feasible configuration as desired by one skilled in the art. For example, the air blowing port 2101 is provided in the left or right side portion of the rear slope 213, and the air blowing port 2101 is provided as an oval opening, a circular opening, or a square opening.

As shown in fig. 6, 10 and 20, the top plate of the housing 210 also has a top surface 214 located on the front side of the rear slope 213. Preferably, the top surface 214 is horizontally disposed.

As shown in fig. 5, the case module 100 is provided with an upper inclined plane 151 (located at the upper rear part of the accommodating chamber 102) adapted to the rear inclined plane 213, an air inlet 13011 of the air supply passage 1301 is formed on the upper inclined plane 151, and the upper inclined plane 151 abuts against the rear inclined plane 213 so that the air supply outlet 2101 is butted with the air inlet 13011. Further, the cabinet module 100 is further provided with a bottom surface 152 (top wall of the accommodating cavity 102) adapted to the top surface 214, and the top surface 214 abuts against the bottom surface 152, so that the refrigeration module 200 bears all the gravity of the cabinet module 100 through the top surface 214 thereof, thereby preventing the weight of the cabinet module 100 from being pressed onto the rear slope 213, further preventing the edge of the air supply opening 2101 from being deformed, and ensuring the sealing between the air supply opening 2101 and the air inlet 13011.

Further, although not explicitly shown, a gap is formed between the upper inclined surface 151 and the rear inclined surface 213 in a state where the bottom surface 152 abuts against the top surface 214. And at least one of the upper inclined surface 151 and the rear inclined surface 213 is attached with a gasket that can be compressed such that the gasket fills the gap and is pressed by the upper inclined surface 151 and the rear inclined surface 213, so that the upper inclined surface 151 and the rear inclined surface 213 are abutted together by the gasket.

As will be understood by those skilled in the art, by changing the edge of the refrigeration module 200 that abuts the cabinet module 100 at the rear side to be a surface (i.e., the rear slope 213), the line junction contact area where the surface contacts the opposite edge is larger, the pressure is lower, and the deformation is less likely to occur. Meanwhile, the rear inclined plane 213, the rear side plate of the housing 210 and the top plate of the housing 210 also jointly form a triangular structure, so that the structure corresponding to the rear inclined plane 213 on the housing 210 is more stable and is less prone to deformation.

In some embodiments of the present invention, the included angle between the rear slope 213 and the horizontal plane is less than 45 ° to prevent the weight of the box module 100 from pressing on the rear slope 213, so as to reduce the pressure on the centrifugal fan 240 in the refrigeration module 200 in the vertical direction, and prevent the volute 241 of the centrifugal fan 240 from deforming; and the blower port 2101 is made to blow an obliquely upward airflow so as to be directed upward as much as possible.

Further, as shown in fig. 20, a side plate where the rear slope 213 is located is provided with a downwardly extending rib 2131, the rib 2131 surrounds at least one side of the air blowing port 2101, and the rib 2131 enhances the structural strength at the edge of the air blowing port 2101. The reinforcing rib 2131 is preferably provided at a position of at least a part of the circumferential edge of the air blowing port 2101 inside the side plate where the rear slope 213 is located. Specifically, the reinforcing ribs 2131 are provided on the left side, right side, and rear side of the air blowing port 2101, and the reinforcing ribs 2131 at these three positions are in contact with each other and are in contact with the bottom wall of the refrigerating compartment 2104. The bottom surfaces of the reinforcing ribs 2131 on the left and right sides of the air blowing port 2101 are inclined downward from the rear to the front so as to be surely abutted against and/or parallel to the bottom wall of the cooling compartment 2104.

Those skilled in the art can understand that the reinforcing ribs 2131 at the edge of the air supply port 2101 can support the structure at the edge of the air supply port 2101 in the vertical direction, so that the rear inclined surface 213 can have enough supporting force when being extruded by the gravity of the box module 100, thereby preventing the deformation of the rear inclined surface. Therefore, the volute 241 of the centrifugal fan 240 is not extruded and deformed.

As shown in fig. 11 and 12, in the left-right direction of the refrigeration module 200, the compressor 221, the heat dissipation fan 230, and the condenser 223 are sequentially arranged between the heat dissipation air outlet duct 2106 and the heat dissipation air inlet duct 2105, and the heat dissipation fan 230 and the condenser 223 are disposed in close proximity to reduce the size of the refrigeration module 200 in the lateral direction.

Optionally, the refrigeration module 200 further includes a fixing shell 201 disposed in the pressing cabin 2103, and the heat dissipation fan 230 and the condenser 223 are both fixedly connected to the fixing shell 201. Further alternatively, at least a portion of at least one of the heat dissipation fan 230 and the condenser 223 is embedded in the stationary case 201. Preferably, at least a portion of each of the heat dissipation fan 230 and the condenser 223 is embedded in the fixing case 201 such that the air current flowing through the heat dissipation fan 230 entirely flows through the condenser 223, thereby improving the heat dissipation efficiency of the heat dissipation fan 230 to the condenser 223.

As can be seen from fig. 11 and 13, a gap is formed between the bottom plate of each of the heat dissipation air inlet duct 2105 and the heat dissipation air outlet duct 2106 and a bearing surface (e.g., a floor or a floor).

As shown in fig. 11 to 14, the heat dissipation air intake duct 2105 includes a plurality of front air openings 21051 formed on a front side plate of the housing 210 so that external air can enter the heat dissipation air intake duct 2105 from the plurality of front air openings 21051. Further, the heat dissipation air intake duct 2105 further includes a plurality of bottom side air inlets 21052 formed on the bottom plate of the heat dissipation air intake duct 2105, so that the external air can enter the heat dissipation air intake duct 2105 through the gap below the heat dissipation air intake duct 2105 and the plurality of bottom side air inlets 21052.

As can be understood by those skilled in the art, since the heat dissipation air intake duct 2105 has a plurality of front air inlets 21051 at the front side thereof and a plurality of bottom air inlets 21052 at the bottom side thereof, the air intake capability of the heat dissipation air intake duct 2105 is improved, and the wind resistance is reduced. The problem that the air inlet is not smooth due to the limitation of the area of the front side plate of the heat dissipation air inlet channel 2105 when the heat dissipation air inlet channel 2105 is only provided with a plurality of front air inlets 21051 is avoided; and the problem that the heat dissipation air inlet channel 2105 cannot obtain enough air due to the blockage of the bottom side air inlet 21052 caused by the accumulation of dust, lint and other impurities at the bottom side air inlet 21052 when the heat dissipation air inlet channel 2105 only has a plurality of bottom side air inlets 21052 is also avoided.

With continued reference to fig. 11 to 14, the heat dissipation air outlet duct 2106 includes a plurality of front air outlets 21061 formed on the front side plate of the casing 210, so that the hot air in the heat dissipation air inlet duct 2105 can flow out from the plurality of front air outlets 21061 to the outside. Optionally, the heat dissipation air outlet duct 2106 includes a plurality of bottom side air outlets (not shown) formed on a bottom plate thereof.

As shown in fig. 13, the housing 210 further includes a wind shield 215 disposed at the bottom side of the bottom plate of the pressing chamber 2103, and the wind shield 215 is used to prevent the bottom side air inlet 21052 from sucking the hot air blown out from the front air outlet 21061.

With continued reference to fig. 11 to 13, the bottom plate of the pressing chamber 2103 is provided with a plurality of chamber bottom air inlets 21031 at the windward side of the condenser 223, and the bottom plate of the pressing chamber 2103 is provided with a plurality of chamber bottom air outlets 21032 at the side of the heat dissipation fan 230 away from the condenser 223. And the plurality of bottom side air intakes 21052 and the plurality of bottom bin air intakes 21031 are located on one side of the air deflector 215, and the plurality of bottom bin air outlets 21032 are located on the other side of the air deflector 215. Based on this, it can be understood by those skilled in the art that the outside air can also enter the pressing chamber 2103 through the chamber bottom air inlet 21031, and a part of the hot air in the pressing chamber 2103 flows to the outside from the chamber bottom air outlet 21032.

As can be seen from fig. 11 to 13, in some embodiments of the present invention, a portion of the plurality of bottom outlet 21032 is located below the compressor 221, and another portion of the plurality of bottom outlet 21032 is located at the front side of the compressor 221.

As shown in fig. 11 to 13, 15 and 16, the plurality of bottom vents 21032 at the front side of the compressor 221 are adjacent to the evaporating dish 250.

As will be understood by those skilled in the art, the airflow blocked by the rear plate of the evaporation pan 250 can be reflected to the plurality of bottom outlets 21032 on the front side of the compressor 221, and then flows to the outside from the plurality of bottom outlets 21032 (as shown in fig. 15 and 16). For the structure without the bin bottom air outlet 21032 at the rear side of the evaporation dish 250, the structure can effectively avoid the shielding effect of the rear side plate of the evaporation dish 250 on the air flow, and further effectively avoid the cyclone of the air flow at the rear side plate of the evaporation dish 250. Therefore, in some embodiments of the present invention, the blocking effect of the rear side plate of the evaporating dish 250 on the air flow can be effectively eliminated, and the corresponding noise can be eliminated.

In other embodiments of the present invention, the plurality of bottom outlet 21032 may be arranged in any other feasible form, for example, the plurality of bottom outlet 21032 may be arranged on the front side, the right side and the bottom side of the compressor 221, or arranged on the front side and/or the right side of the compressor 221, as required by those skilled in the art.

As shown in fig. 11 and 12, in some embodiments of the present invention, the structure of the evaporation pan 250 in the horizontal direction is adapted to the structure of the heat dissipation air-out channel 2106 in the horizontal direction, that is, the evaporation pan 250 is parallel to the mutually opposite sides of the heat dissipation air-out channel 2106, so that the evaporation pan 250 can be spread over the whole heat dissipation air-out channel 2106 as much as possible, thereby increasing the evaporation area of the evaporation pan 250 and increasing the evaporation rate of water in the evaporation pan 250.

Optionally, the size of the evaporation pan 250 in the front-back direction is larger than the size of the evaporation pan 250 in the left-right direction, so that the evaporation pan 250 has a sufficient length on the path of the air flowing in the heat dissipation air outlet channel 2106, thereby increasing the contact time between the water in the evaporation pan 250 and the air flow and increasing the evaporation rate of the water in the evaporation pan 250.

Further, the width of the front portion of the evaporation pan 250 is gradually reduced from back to front, and the width of the front portion of the heat dissipation air-out channel 2106 is also gradually reduced from back to front, so that the flow area of the front portion of the heat dissipation air-out channel 2106 is gradually reduced, and the flow speed of the air flow at the front portion of the evaporation pan 250 is gradually increased, so as to ensure the evaporation rate of the water in the front portion of the evaporation pan 250.

As can be understood by those skilled in the art, in the heat dissipation air outlet channel 2106, since the temperature of the air flow is higher just after entering the evaporation pan 250, the air flow has a good heating effect on the water in the evaporation pan 250; however, as the airflow approaches the front air outlet 21061, the airflow absorbs more heat and has lower temperature, so that the heating effect of the airflow on the water is poor. And the width of the evaporating dish 250 and the front part of the heat dissipation air-out channel 2106 is gradually reduced from back to front, so that the flow area of the front part of the heat dissipation air-out channel 2106 is gradually reduced, and the flow speed of the air flow at the position is gradually increased, and the air flow can overcome the influence of low temperature on the water evaporation efficiency at high flow speed. Therefore, in some embodiments of the present invention, the width of the front portion of the evaporation dish 250 and the heat dissipation air-out channel 2106 is gradually reduced from back to front, so as to improve the evaporation efficiency of the air flow in the heat dissipation air-out channel 2106 to the water in the evaporation dish 250.

Further, the distance between the front surface of the evaporation pan 250 and the front side plate of the housing 210 in the front-rear direction of the refrigeration module 200 is not less than 5mm, preferably not less than 15mm, to ensure that there is a sufficient gap between the front surface of the evaporation pan 250 and the front side plate of the housing 210, and to reduce the wind resistance thereto.

As can be seen from fig. 13 to 15, the front air inlet 21051 and the front air outlet 21061 are strip-shaped holes extending in the up-down direction, and the top surface of the front end of the evaporating dish 250 is located at the middle upper part of the strip-shaped holes in the vertical direction. That is, in the vertical direction of the refrigeration module 200, the top end of the front plate of the evaporation pan 250 is located at the middle upper portion of the front outlet port 21061 to ensure that a part of the air flow can be blown out from the front outlet port 21061 in the horizontal direction.

Further, in the up-down direction of the refrigeration module 200, the minimum distance between the top surface of the evaporation pan 250 (i.e. the top end of the front side plate of the evaporation pan 250) and the top wall of the heat dissipation air-out channel 2106 is not less than 5mm, and preferably not less than 15mm, so as to ensure that there is enough gap between the front side plate of the evaporation pan 250 and the top wall of the heat dissipation air-out channel 2106, and reduce the wind resistance to the air flow there.

As shown in fig. 11, 12, 15 and 16, in some embodiments of the present invention, a water receiving pipe 251 extending upward from the bottom plate of the evaporation pan 250 is disposed in the evaporation pan 250. The lower end of drain pipe 270 is inserted into water receiving pipe 251, and a gap is provided between water receiving pipe 251 and drain pipe 270, so that water flowing out of drain pipe 270 can flow out of water receiving pipe 251 through the gap and into evaporation pan 250.

As will be understood by those skilled in the art, since the lower end of the drain pipe 270 is inserted into the water receiving pipe 251, a small amount of water will be stored in the water receiving pipe 251 after the defrosting of the evaporator 226 is finished to seal the bottom end of the drain pipe 270, i.e., the liquid level in the water receiving pipe 251 is above the bottom end of the drain pipe 270. It will further be appreciated by those skilled in the art that the bottom end of the drain 270 is closed by water, so that the hot air in the evaporating dish 250 cannot enter the cooling compartment 2104 from the drain 270, thereby improving the cooling efficiency of the cooling module 200.

In addition, in other embodiments of the present invention, a person skilled in the art may also set a sink in the evaporation pan 250 and insert the lower end of the drain pipe 270 into the sink, as needed. Specifically, the sink is formed on the bottom plate of the evaporation pan 250 and is recessed downward so as to ensure that water is contained therein even when the amount of water in the evaporation pan 250 is small, thereby ensuring that the drain pipe 270 can be water-sealed.

Up to this point, the case module 100 and the refrigeration module 200 of the present invention have been described in detail with reference to the accompanying drawings. Based on the foregoing description, it can be understood by those skilled in the art that, in the present invention, by setting the evaporator 226 to incline upwards along the direction from the front to the back, the range of the included angle between the evaporator 226 and the horizontal plane is 8 ° to 45 °, so that the evaporator 226 occupies a smaller space in the vertical direction, and at the same time, the space occupied in the front and back direction is also smaller, so that the refrigeration compartment 2104 room can reserve more space to arrange the centrifugal fan 240, and there is enough clearance between the centrifugal fan 240 and the evaporator 226, thereby avoiding the wind resistance from being too large and affecting the energy consumption of the refrigeration equipment.

Furthermore, the outer contours of the projections of the press chamber 2103, the heat dissipation air inlet channel 2105 and the heat dissipation air outlet channel 2106 on the horizontal plane are positioned outside the projection of the refrigeration chamber 2104 on the horizontal plane, and the transverse gap 21071, the front gap 21072 and the longitudinal gap 21073 outside the refrigeration chamber 2104 are filled with the heat insulation material, so that the top plates of the press chamber 2103, the heat dissipation air inlet channel 2105 and the heat dissipation air outlet channel 2106 are parallel to the bottom plate of the refrigeration chamber 2104, and the structure of the refrigeration module 200 is more compact while the refrigeration chamber 2104 is prevented from leaking cold.

Further, by arranging the evaporation pan 250 in the heat dissipation air outlet channel 2106, the evaporation pan 250 can heat the water therein by using the heat of the whole press cabin 2103, thereby increasing the evaporation rate of the water in the evaporation pan 250.

Further, by extending the drain pipe 270 from the top down into the evaporation pan 250, the defrosting water in the refrigeration compartment 2104 can be quickly discharged into the evaporation pan 250. By inserting the lower end of drain pipe 270 into water receiving pipe 251, a small amount of water is stored in water receiving pipe 251 to seal the bottom end of drain pipe 270. As can be understood by those skilled in the art, since the bottom end of the drain pipe 270 is sealed by water, the hot air in the evaporating dish 250 cannot enter the cooling compartment 2104 from the drain pipe 270, thereby improving the cooling efficiency of the cooling module 200.

Meanwhile, the above structure of the refrigeration module 200 also makes the whole refrigeration module 200 more flat, leaving more space for the tank module 100 thereon.

So far, the technical solution of the present invention has been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Without deviating from the technical principle of the present invention, those skilled in the art can split and combine the technical solutions in the above embodiments, and also can make equivalent changes or substitutions for related technical features, and any changes, equivalent substitutions, improvements, etc. made within the technical concept and/or technical principle of the present invention will fall within the protection scope of the present invention.

Claims (10)

1. A centrifugal fan is characterized by comprising a volute and an impeller installed in the volute,

the volute is provided with a fan inlet and a fan outlet,

a support post is provided in the volute, the support post being configured to prevent two sidewalls of the volute opposite to the rotation axis of the impeller from approaching each other.

2. The centrifugal fan of claim 1,

the volute also includes an upper volute and a lower volute,

the fan inlet is formed on the upper volute, and the fan outlet is formed between the upper volute and the lower volute;

the support column is fixedly connected with one of the upper volute and the lower volute or is integrally manufactured, and the support column is abutted against the other of the upper volute and the lower volute.

3. The centrifugal fan of claim 2,

a positioning structure is arranged on the other of the upper volute and the lower volute,

the positioning structure is plugged together with the support column.

4. The centrifugal fan of claim 3,

the positioning structure is a hollow positioning sleeve, and the supporting column is inserted into the positioning sleeve.

5. The centrifugal fan of claim 2,

the support column is arranged between the impeller and the fan outlet.

6. The centrifugal fan of claim 5,

at least one of the upper volute and the lower volute is provided with a plurality of fixed columns for mounting the impeller,

one of the plurality of fixed posts closest to the fan outlet is located between the support post and the impeller in the flow path of air within the volute.

7. The centrifugal fan according to any one of claims 1 to 6,

the support column is parallel to the rotation axis of the impeller; alternatively, the first and second electrodes may be,

the support column is parallel to the air outlet direction at the outlet of the fan.

8. A refrigeration module, comprising:

the refrigerator comprises a shell, a compressor bin and a refrigerating chamber are limited in the shell, and an air return opening and an air supply opening which are communicated with the refrigerating chamber are formed in the shell;

a refrigeration system comprising a compressor and a condenser disposed within the compressor compartment, the refrigeration system further comprising an evaporator disposed within the refrigeration compartment;

a heat dissipation fan disposed within the press bin;

the centrifugal fan of any one of claims 1 to 7 disposed within the refrigerated compartment and on a rear side of the evaporator, the volute being fluidly connected to the supply air outlet through a portion where the fan outlet is located.

9. A refrigeration module as recited in claim 8,

the part where the fan outlet is located is inserted into the air supply outlet so that the fan outlet is exposed; and/or the like and/or,

and reinforcing ribs extending downwards and surrounding the air supply outlet are arranged on the bottom side of the top plate of the refrigerating compartment, and the bottom surfaces of the parts of the reinforcing ribs on the left side and the right side of the air supply outlet are parallel to and/or abutted against the bottom plate of the refrigerating compartment.

10. A cold storage appliance comprising a cabinet module and a refrigeration module as claimed in claim 8 or 9,

the box body module is limited with a storage room, an air supply channel communicated with the storage room and an air return channel communicated with the storage room, the air supply channel is in fluid connection with the fan outlet of the refrigeration module through one end of the air supply channel far away from the storage room, and the air return channel is in fluid connection with the air return inlet of the refrigeration module through one end of the air return channel far away from the storage room.

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