Flow guide shell, gas conveying assembly and refrigerator

Abstract

The utility model discloses a flow guide shell, a gas conveying assembly and a refrigerator. The flow guide shell comprises a shell body and a drainage piece. The shell body is provided with a mounting cavity used for mounting a centrifugal fan and at least two airflow guide grooves formed in the circumferential direction of the mounting cavity at intervals, air inlets communicating with the airflow guide grooves are formed in the bottom of the mounting cavity, and the at least two airflow guide grooves comprise first guide grooves used for conveying air to the temperature changing cavity. The drainage piece is arranged between the mounting cavity and the first guide groove and used for draining gas to the first guide groove. According to the flow guide shell, by optimizing the structure, vortex can be effectively reduced or avoided, the air outlet amount of the first guide groove is increased, and the cooling capacity needed by the temperature changing cavity can be guaranteed.

Description

Technical Field

[0001] This disclosure relates to the field of electrical technology, and in particular to a flow guide housing, a gas delivery assembly, and a refrigerator. Background Technology

[0002] With the development of society and the economy and the improvement of people's living standards, refrigerators have gradually become an indispensable household appliance. Refrigerators use refrigeration to maintain a low temperature inside their storage compartments, thereby better preserving food.

[0003] In related technologies, the gas delivery assembly in the freezer compartment of a refrigerator delivers gas from the refrigeration chamber to the freezer compartment and the variable temperature chamber to maintain the required cooling capacity of each compartment. However, due to structural defects in the guide shell, eddies occur during the process of the fan delivering gas to the variable temperature chamber through the fluid channel, which is not conducive to ensuring the required cooling capacity of the variable temperature chamber. Utility Model Content

[0004] In view of this, the present disclosure provides a flow guide housing, a gas delivery assembly, and a refrigerator. Through optimized structure, the flow guide housing effectively reduces or avoids the generation of eddies, increases the airflow through the first guide channel, and helps ensure the required cooling capacity of the temperature-controlled cavity.

[0005] Specifically, this disclosure is achieved through the following technical solution.

[0006] According to a first aspect of the present disclosure, a flow-guiding housing is provided, comprising a housing body and a flow-guiding member. The housing body has a mounting cavity for mounting a centrifugal fan and at least two airflow guide channels spaced circumferentially along the mounting cavity. The bottom of the mounting cavity has an air inlet communicating with the airflow guide channels. One of the at least two airflow guide channels is a first guide channel for supplying gas to a temperature-changing chamber. The flow-guiding member is disposed between the mounting cavity and the first guide channel, and is used to guide gas to the first guide channel.

[0007] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0008] When this air-guiding housing is applied to a refrigerator, its air inlet is connected to the refrigeration chamber, and the centrifugal fan is positioned in the mounting chamber with its air inlet facing the air inlet. The first guide channel is connected to the temperature-changing chamber. When the refrigerator is running, the centrifugal fan operates, delivering low-temperature gas to the temperature-changing chamber through the first guide channel. During this process, a flow guide is positioned between the mounting chamber and the first guide channel, guiding the low-temperature gas to the first guide channel and reducing or avoiding turbulence. This allows for increased airflow of low-temperature gas through the first guide channel at the same operating power for centrifugal fans of the same specifications, thus meeting both the airflow requirements for the temperature-changing chamber and the refrigeration chamber.

[0009] The technical solution disclosed herein will be further explained below.

[0010] In one embodiment, the shell body includes a plate, a first rib, and a second rib, with a mounting cavity disposed on the plate. The first and second ribs are disposed on the plate to form a first guide groove. A drainage member is fixedly connected to the first rib and spaced apart from the second rib.

[0011] In one embodiment, the drainage element is integrally formed with the first protruding rib.

[0012] And / or, the drainage element and the first rib form an obtuse angle.

[0013] And / or, the first guide groove is also provided with a first air outlet spaced apart from the air inlet, and the first air outlet is located near the first protruding rib.

[0014] In one embodiment, the drain element and the second rib are spaced apart between the first air outlet and the air inlet.

[0015] In one embodiment, at least two airflow guide channels further include a second guide channel spaced apart from the first guide channel along a first direction.

[0016] The flow guide housing also includes an anti-backflow component, which is fixedly connected to the flow guide component and is disposed between the mounting cavity and the second guide groove to prevent gas flowing to the first guide groove from flowing back to the second guide groove.

[0017] In one embodiment, the anti-backflow component and the drain component are connected at an acute angle.

[0018] And / or, the anti-backflow component and the flow guide component work together to form a spiral tongue structure.

[0019] And / or, the anti-backflow component is arc-shaped and recessed away from the mounting cavity.

[0020] In one embodiment, at least two airflow guide channels further include a third guide channel spaced apart from the second guide channel along a second direction. The first direction intersects the second direction.

[0021] In one embodiment, the shell body includes a plate having a mounting cavity.

[0022] The airflow guide channel is formed by a recess in the plate. Alternatively, the shell body also includes a raised rib for forming the airflow guide channel, the raised rib being fixed to the plate.

[0023] According to a second aspect of the present disclosure, a gas delivery assembly is provided, comprising a centrifugal fan, a fluid channel cover, and a flow guide housing as described in any of the above embodiments. The centrifugal fan is disposed in an installation cavity, with its air inlet facing the air inlet. The fluid channel cover is connected to the flow guide housing to cover the airflow guide groove to form a fluid channel, and the fluid channel cover has a second air outlet communicating with a refrigeration chamber.

[0024] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0025] The gas delivery assembly utilizes the flow guide housing from any of the above embodiments, which effectively reduces the generation of eddies and increases the airflow, thereby improving the reliability of the gas delivery assembly.

[0026] According to a third aspect of the present disclosure, a refrigerator is provided. The refrigerator includes a cabinet assembly, an evaporator, and a gas delivery assembly as described in the above embodiments. The cabinet assembly has a freezing compartment and a refrigeration compartment with a variable temperature chamber. The gas delivery assembly is fixed in the freezing compartment and divides the freezing compartment into a refrigeration chamber and a freezing chamber. The evaporator is disposed in the refrigeration chamber. An air inlet is connected to the refrigeration chamber. A first guide groove is connected to the variable temperature chamber. A second air outlet is connected to the freezing chamber.

[0027] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0028] The refrigerator uses the gas delivery assembly and flow guide housing from any of the above embodiments, which improves reliability and thus enhances the user experience.

[0029] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0030] The accompanying drawings, which form part of this disclosure, are used to provide a further understanding of this disclosure. The illustrative embodiments of this disclosure and their descriptions are used to explain this disclosure and do not constitute an undue limitation of this disclosure.

[0031] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of a refrigerator according to one embodiment.

[0033] Figure 2 for Figure 1 The refrigerator shown is a half-section view of AA.

[0034] Figure 3 for Figure 1 The diagram shown illustrates the refrigeration principle of a refrigerator.

[0035] Figure 4 This is a cross-sectional side view of a refrigerator according to one embodiment.

[0036] Figure 5 for Figure 4 The diagram shows an exploded view of the gas delivery assembly of the refrigerator.

[0037] Figure 6 for Figure 5 The diagram shows the structural schematic of the flow guide housing of the gas delivery assembly.

[0038] Figure 7 for Figure 6 The diagram shows a front view of the flow guide shell.

[0039] Figure 8 for Figure 5 The diagram shows a front view of the gas delivery assembly.

[0040] Figure 9 for Figure 5 The diagram shows the structure of the fluid channel cover plate of the gas delivery assembly.

[0041] Explanation of the reference numerals in the attached figures.

[0042] 1. Refrigerator; 10. Gas delivery assembly; 20. Cabinet assembly; 21. Refrigerated compartment; 211. Variable temperature chamber; 22. Freezer compartment; 221. Cooling chamber; 222. Freezer chamber; 30. Door assembly; 31. First door; 32. Second door; 40. Refrigeration system; 41. Compressor; 42. Condenser; 43. Evaporator; 44. Expansion valve; 100. Airflow guide shell; 110. Shell body; 111. Mounting cavity; 112. Airflow guide channel; 1121. First guide channel; 112 2. Second guide channel; 1123. Third guide channel; 113. Air inlet; 114. Plate; 115. First rib; 116. Second rib; 117. Third rib; 118. Fourth rib; 119. Fifth rib; 1110. Sixth rib; 120. Drainage component; 121. Drainage surface; 130. Anti-backflow component; 131. Anti-backflow surface; 140. First air outlet; 200. Fluid channel cover plate; 210. Second air outlet; 300. Centrifugal fan; 400. Insulation layer. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and do not limit the scope of protection of this disclosure.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure.

[0045] With the development of society and the economy and the improvement of people's living standards, refrigerators have gradually become an indispensable household appliance. Refrigerators use refrigeration to maintain a low temperature inside their storage compartments, thereby better preserving food.

[0046] In related technologies, refrigerators use a gas delivery assembly in the freezer compartment to transport gas from the refrigeration chamber to the freezer compartment and the variable-temperature chamber to maintain the required cooling capacity in each compartment. However, due to structural defects in the guide shell, eddies occur during the fan's delivery of gas to the variable-temperature chamber through the fluid channel, which is detrimental to ensuring the required cooling capacity of the variable-temperature chamber. When facing this technical problem, technicians typically increase the motor power of the fan to increase the airflow rate in the fluid channel, thereby increasing the amount of cold air output. However, this increases the refrigerator's energy consumption and is detrimental to the user experience.

[0047] Based on this, the present disclosure provides a flow guide housing, a gas delivery assembly, and a refrigerator. The flow guide housing, through its optimized structure, can effectively reduce or avoid the generation of eddies, increase the airflow of the first guide channel, and help ensure the cooling capacity required by the temperature-changing cavity.

[0048] To better understand the flow guide housing of this disclosure, a refrigerator using the flow guide housing and gas delivery assembly is used as an example.

[0049] like Figure 1 , Figure 2 as well as Figure 4 As shown, in some embodiments, the refrigerator 1 includes a gas delivery assembly 10 and a cabinet assembly 20. The cabinet assembly 20 is provided with a refrigerator compartment 21 and a freezer compartment 22. The gas delivery assembly 10 is connected to the refrigerator compartment 21 and the freezer compartment 22 respectively.

[0050] like Figure 1 , Figure 2 as well as Figure 4As shown, in some embodiments, the gas delivery assembly 10 is fixed to the freezing chamber 22 and divides the freezing chamber 22 into a refrigeration chamber 221 and a freezing chamber 222. The refrigeration chamber 21 is provided with a temperature-variable chamber 211. The refrigeration chamber 221 is connected to the freezing chamber 222 and the temperature-variable chamber 211 respectively through the gas delivery assembly 10 to deliver low-temperature gas to the freezing chamber 222 and the temperature-variable chamber 211.

[0051] It should be noted that the variable temperature chamber 211 includes at least one of the following: a refrigeration chamber, a freshness preservation chamber, and a heat preservation chamber.

[0052] like Figure 2 As shown, in some embodiments, along the height direction of the refrigerator 1, the refrigeration compartment 21 is positioned above the freezer compartment 22.

[0053] like Figure 1 as well as Figure 2 As shown, in some embodiments, the refrigerator 1 further includes a door assembly 30, which is movably disposed on the body assembly 20 to open or close the freezer compartment 22 and the refrigerator compartment 21.

[0054] like Figure 1 as well as Figure 2 As shown, in some embodiments, the door assembly 30 includes a first door 31 and a second door 32. The first door 31 is rotatably connected to the body assembly 20 to open or close the refrigerator compartment 21. The second door 32 is rotatably connected to the body assembly 20 to open or close the freezer compartment 22.

[0055] like Figure 2 as well as Figure 3 As shown, in some embodiments, the refrigerator 1 further includes a refrigeration system 40, which can provide low-temperature gas in the refrigeration chamber 221 and deliver the low-temperature gas to the freezing chamber 222 and the variable temperature chamber 211 through the gas delivery assembly 10.

[0056] like Figure 3 As shown, in some embodiments, the refrigeration system 40 includes a compressor 41, a condenser 42, an evaporator 43, and an expansion valve 44, which are disposed in the housing assembly 20.

[0057] Combination Figure 3As shown, when the refrigerator 1 is running, the compressor 41 outputs high-temperature, high-pressure gaseous refrigerant, which is then delivered to the condenser 42. The condenser 42 condenses the high-temperature, high-pressure gaseous refrigerant into medium-temperature, high-pressure refrigerant. This medium-temperature, high-pressure refrigerant then undergoes expansion and throttling through the expansion valve 44, further reducing its pressure and temperature. Low-temperature, low-pressure liquid refrigerant flows out of the expansion valve 44 and into the evaporator 43. The low-temperature, low-pressure liquid refrigerant evaporates into gaseous refrigerant within the evaporator 43. The resulting low-temperature gas is delivered to the gas delivery assembly 10, which then delivers it to the refrigerator compartment 21 and the freezer compartment 22, respectively, thereby lowering the temperatures within the refrigerator compartment 21 and the freezer compartment 22 to maintain a low-temperature environment.

[0058] like Figure 4 as well as Figure 5 As shown, in some embodiments, the evaporator 43 is disposed in the refrigeration chamber 221. In this way, the evaporator 43 can generate low-temperature gas in the refrigeration chamber 221 and deliver it to the freezing chamber 222 and the variable temperature chamber 211 respectively through the gas delivery assembly 10.

[0059] like Figure 4 as well as Figure 5 As shown, in some embodiments, the gas delivery assembly 10 includes a flow guide housing 100, a fluid channel cover 200, and a centrifugal fan 300. The centrifugal fan 300 is disposed in the flow guide housing 100, and the fluid channel cover 200 is connected to the flow guide housing 100 to form a fluid channel. The gas delivery assembly 10 communicates with the freezing chamber 222 and the temperature-changing chamber 211 through the fluid channel. Thus, when the refrigerator 1 is working, the low-temperature gas generated by the refrigeration system 40 can enter the fluid channel and be output to the freezing chamber 222 and the temperature-changing chamber 211 through the fluid channel to cool the freezing chamber 222 and the temperature-changing chamber 211.

[0060] like Figure 6 as well as Figure 7As shown, in some embodiments, the flow guide housing 100 includes a housing body 110 and a flow guide 120. The housing body 110 is provided with a mounting cavity 111 for mounting a centrifugal fan 300 and at least two airflow guide channels 112 spaced circumferentially along the mounting cavity 111. The bottom of the mounting cavity 111 is provided with an air inlet 113 communicating with the airflow guide channels 112. The air inlet 113 communicates with the cooling cavity 221. The at least two airflow guide channels 112 include a first guide channel 1121 for conveying gas to the temperature-changing cavity 211. The flow guide 120 is disposed between the mounting cavity 111 and the first guide channel 1121, and the flow guide 120 is used to guide the gas to the first guide channel 1121. Thus, when the air guide housing 100 is applied to the refrigerator 1, the air inlet 113 of the air guide housing 100 is connected to the refrigeration chamber 221, the centrifugal fan 300 is disposed in the mounting chamber 111, and the air inlet end of the centrifugal fan 300 is positioned facing the air inlet 113, and the first guide groove 1121 is connected to the temperature-changing chamber 211. When the refrigerator 1 is running, the centrifugal fan 300 operates and delivers low-temperature gas to the temperature-changing chamber 211 through the first guide groove 1121. During this process, the flow guide 120 is disposed between the mounting chamber 111 and the first guide groove 1121, and the low-temperature gas can be guided to the first guide groove 1121 through the flow guide 120, reducing or avoiding the generation of eddies. This allows the low-temperature gas outlet volume in the first guide groove 1121 to be increased under the same operating power of the centrifugal fan 300 of the same specifications, thereby meeting the air volume requirements for supplying air to the temperature-changing chamber 211 and also meeting the air volume requirements for supplying air to the freezer compartment 22.

[0061] The refrigerator 1 using the above-mentioned airflow guide shell 100 can increase the cold air volume in the first guide channel 1121 under the same airflow conditions. That is, without increasing the motor power of the fan, the cold air volume in the first guide channel 1121 can be increased, which is beneficial to reducing the energy consumption of the refrigerator 1.

[0062] It should be noted that there are multiple ways to connect the draining component 120 to the shell body 110, including integral molding of the draining component 120 and the shell body 110 (e.g., injection molding) and separate manufacturing and reassembly (e.g., the draining component 120 and the shell body 110 are manufactured separately, and then the draining component 120 is connected to the shell body 110 after the manufacturing is completed).

[0063] like Figure 4 as well as Figure 5 As shown, in some embodiments, the fluid channel cover 200 is connected to the flow guide housing 100 to cover the airflow guide groove 112 to form a fluid channel. In this way, when the refrigerator 1 is working, the low-temperature gas generated by the refrigeration system 40 can enter the fluid channel and be output to the freezing chamber 222 and the variable temperature chamber 211 through the fluid channel to cool the freezing chamber 222 and the variable temperature chamber 211.

[0064] like Figure 6 as well as Figure 7 As shown, in some embodiments, the shell body 110 includes a plate 114, a first rib 115, and a second rib 116, with a mounting cavity 111 disposed on the plate 114. The first rib 115 and the second rib 116 are disposed on the plate 114 to form a first guide groove 1121. The guide member 120 is fixedly connected to the first rib 115 and spaced apart from the second rib 116. Thus, by providing the first rib 115 and the second rib 116 on the plate 114 to form the first guide groove 1121, when the low-temperature gas is delivered to the first guide groove 1121, under the action of the first rib 115 and the second rib 116, the low-temperature gas can move along a set path to accurately deliver to the target position, which is beneficial to improving the reliability of the refrigerator 1's refrigeration. By using the flow guide 120 to be fixedly connected to the first rib 115 and spaced apart from the second rib 116, it is beneficial for the flow guide 120 to guide the low-temperature gas to the first guide groove 1121, ensuring a smooth change in airflow direction, reducing airflow loss, and increasing the airflow volume of the low-temperature gas in the first guide groove 1121, thereby improving the cooling efficiency of the refrigerator 1.

[0065] like Figure 6 as well as Figure 7 As shown, in some embodiments, the guide member 120 and the first rib 115 form an obtuse angle. Thus, when the refrigerator 1 is operating, low-temperature gas is transported from the air inlet 113 to the airflow guide channel 112 via the centrifugal fan 300, and at least a portion of the low-temperature gas is transported to the first guide channel 1121. The obtuse angle between the guide member 120 and the first rib 115 facilitates better guidance of the low-temperature gas to the first guide channel 1121 by the guide member 120, ensuring a smooth transition of airflow direction, reducing airflow loss, and further increasing the airflow volume of the low-temperature gas exiting the first guide channel 1121, thereby improving the cooling efficiency of the refrigerator 1.

[0066] It should be noted that the included angle between the drainage element 120 and the first rib 115 is... Figure 7 The number 'a' is shown.

[0067] like Figure 6 as well as Figure 7 As shown, in some embodiments, the flow guide 120 is integrally formed with the first rib 115. This reduces the assembly steps of the flow guide housing 100 and improves the assembly efficiency of the refrigerator 1.

[0068] like Figure 6 as well as Figure 7As shown, in some embodiments, the first guide channel 1121 is further provided with a first air outlet 140 spaced apart from the air inlet 113, and the first air outlet 140 is located near the first rib 115. Thus, when the refrigerator 1 is operating, low-temperature gas is transported from the air inlet 113 to the airflow guide channel 112 via the centrifugal fan 300, and at least a portion of the low-temperature gas is transported to the first guide channel 1121, and then transported through the first air outlet 140. Positioning the first air outlet 140 near the first rib 115 helps to increase the amount of cold air transported to the first air outlet 140 and reduces the possibility of vortices forming between the first air outlet 140 and the air inlet 113.

[0069] like Figure 6 as well as Figure 7 As shown, in some embodiments, the guide element 120 and the second rib 116 are spaced apart between the first air outlet 140 and the air inlet 113. Thus, when the refrigerator 1 is operating, low-temperature gas is transported from the air inlet 113 to the airflow guide channel 112 via the centrifugal fan 300, and at least a portion of the low-temperature gas is transported to the first guide channel 1121 via the guide element 120, and then transported through the first air outlet 140. The spaced arrangement of the guide element 120 and the second rib 116 between the first air outlet 140 and the air inlet 113 facilitates better guidance of the low-temperature gas to the first air outlet 140, ensuring a smooth transition in airflow direction and reducing airflow loss.

[0070] like Figure 6 as well as Figure 7 As shown, in some embodiments, at least two airflow guide channels 112 further include a second guide channel 1122 spaced apart from the first guide channel 1121 along a first direction. The airflow guide housing 100 also includes an anti-backflow member 130, which is connected to the flow guide member 120 and disposed between the mounting cavity 111 and the second guide channel 1122. The anti-backflow member 130 is used to prevent gas flowing towards the first guide channel 1121 from flowing back to the second guide channel 1122. Thus, when the refrigerator 1 is working, low-temperature gas is transported from the air inlet 113 to the airflow guide channel 112 via the centrifugal fan 300, and can be transported to the first guide channel 1121 and the second guide channel 1122 respectively, and the low-temperature gas is transported to each storage cavity through the first guide channel 1121 and the second guide channel 1122. By connecting the anti-backflow component 130 to the flow guide component 120 and positioning the anti-backflow component 130 between the mounting cavity 111 and the second guide channel 1122, the low-temperature gas delivered to the first guide channel 1121 can be prevented from flowing back to the second guide channel 1122, thus avoiding a reduction in the airflow volume of the first guide channel 1121. Furthermore, connecting the anti-backflow component 130 to the flow guide component 120 also further prevents the generation of vortices in the airflow guide channel 112.

[0071] like Figure 6 as well as Figure 7As shown, in some embodiments, the anti-backflow component 130 and the guide component 120 are connected at an acute angle. Thus, by designing the connection between the anti-backflow component 130 and the guide component 120 at an acute angle, when the refrigerator 1 is operating, the guide component 120 can better guide the low-temperature gas to the first guide channel 1121, while the anti-backflow component 130 can better prevent the low-temperature gas delivered to the first guide channel 1121 from flowing back to the second guide channel 1122. This effectively avoids interference between the anti-backflow component 130 and the guide component 120 when the refrigerator 1 is operating, improving the reliability of the refrigerator 1's cooling process.

[0072] It should be noted that the included angle between the anti-backflow component 130 and the diversion component 120 is... Figure 7 b is shown.

[0073] like Figure 6 as well as Figure 7 As shown, in some embodiments, the anti-backflow component 130 and the flow guide component 120 cooperate to form a volute structure. Thus, by utilizing the anti-backflow component 130 and the flow guide component 120 to form a volute structure, when the refrigerator 1 is operating, this volute structure can effectively guide the low-temperature gas into the first guide channel 1121, ensuring a smooth change in airflow direction and reducing airflow loss. On the other hand, it can effectively prevent the low-temperature gas in the first guide channel 1121 from flowing back to the second guide channel 1122, thereby improving the overall cooling efficiency of the refrigerator 1. Furthermore, this volute structure can also reduce turbulence and eddies caused by the airflow directly impacting the shell body 110, thereby reducing the noise generated during the operation of the refrigerator 1.

[0074] It should be noted that there are several ways to connect the anti-backflow component 130 and the diversion component 120, including integral molding of the anti-backflow component 130 and the diversion component 120 (e.g., injection molding to form a volute structure set on the shell body 110) and separate manufacturing and reassembly (e.g., the anti-backflow component 130 and the diversion component 120 are manufactured separately, and then connected after manufacturing).

[0075] like Figure 6 as well as Figure 7 As shown, in some embodiments, the anti-backflow member 130 is arc-shaped and recessed in a direction away from the mounting cavity 111. Thus, by making the anti-backflow member 130 arc-shaped and recessed in a direction away from the mounting cavity 111, it is beneficial to prevent the low-temperature gas delivered to the first guide channel 1121 from flowing back to the second guide channel 1122, and also to prevent the low-temperature gas delivered to the second guide channel 1122 from flowing back to the mounting cavity 111. This helps to improve the cooling efficiency of the refrigerator 1 and also reduces unnecessary energy consumption.

[0076] like Figure 6 as well as Figure 7As shown, in some embodiments, the guide element 120 includes a guide surface 121, which is an arc-shaped surface. By designing the guide surface 121 as an arc-shaped surface, the low-temperature gas output from the centrifugal fan 300 can be more smoothly delivered to the first guide groove 1121, reducing the possibility of low-temperature gas diversion at the volute structure. This helps maintain the stability and consistency of low-temperature gas delivery, thereby improving the cooling efficiency of the refrigerator 1. Furthermore, the arc-shaped surface can reduce turbulence and eddies generated by low-temperature gas impacts, thereby reducing energy loss. This helps improve the cooling efficiency of the refrigerator 1 and also reduces unnecessary energy consumption.

[0077] like Figure 6 as well as Figure 7 As shown, in some embodiments, the anti-backflow component 130 includes an anti-backflow surface 131, which is an arc-shaped surface. Thus, by designing the anti-backflow surface 131 as an arc-shaped surface, it is beneficial to further prevent the low-temperature gas delivered to the first guide channel 1121 from flowing back to the second guide channel 1122, further avoiding a reduction in the airflow from the first guide channel 1121, thereby improving the cooling efficiency of the refrigerator 1. Furthermore, the arc-shaped surface can reduce turbulence and eddies generated by the impact of low-temperature gas, thereby reducing energy loss. This helps improve the cooling efficiency of the refrigerator 1 and also reduces unnecessary energy consumption.

[0078] like Figure 6 as well as Figure 7 As shown, in some embodiments, at least two airflow guide channels 112 further include a third guide channel 1123 spaced apart from the first guide channel 1121 along a second direction. The first direction intersects the second direction. Thus, by providing the third guide channel 1123 spaced apart from the first guide channel 1121 along the second direction, when the refrigerator 1 is working, low-temperature gas is transported from the air inlet 113 to the airflow guide channel 112 via the centrifugal fan 300, and can be transported to the first guide channel 1121, the second guide channel 1122, and the third guide channel 1123 respectively. The low-temperature gas is then transported to each storage cavity through the first guide channel 1121, the second guide channel 1122, and the third guide channel 1123, which helps to improve the cooling efficiency of the refrigerator 1.

[0079] It should be noted that the first direction is Figure 3 The X direction is shown, and the second direction is... Figure 3 Y direction shown.

[0080] It should be noted that at least two airflow guide channels 112 may also include a fourth airflow guide channel 112, a fifth airflow guide channel 112, and a sixth airflow guide channel 112, etc., which will not be listed here.

[0081] like Figure 6 as well as Figure 7As shown, in some embodiments, the airflow guide channel 112 is formed by a recess in the plate 114. In this way, the method of forming the airflow guide channel 112 can reduce the assembly steps of the airflow guide housing 100 and improve the assembly efficiency of the refrigerator 1.

[0082] like Figure 6 as well as Figure 7 As shown, in some embodiments, the shell body 110 further includes protruding ribs for forming airflow guide grooves 112, and the protruding ribs are fixed to the plate body 114. Thus, this method has a simple structure and is easy to implement.

[0083] like Figure 6 as well as Figure 7 As shown, in some embodiments, the shell body 110 further includes a third rib 117 and a fourth rib 118 protruding from the plate 114, with the third rib 117 and the fourth rib 118 spaced apart to form a second guide groove 1122. Thus, by providing the third rib 117 and the fourth rib 118 protruding from the plate 114 and spaced apart to form the second guide groove 1122, when the low-temperature gas is delivered to the second guide groove 1122, the third rib 117 and the fourth rib 118 can guide the low-temperature gas along a predetermined path to accurately deliver it to the target position, thereby improving the reliability of the refrigerator 1's cooling process.

[0084] like Figure 6 as well as Figure 7 As shown, in some embodiments, the shell body 110 further includes a fifth rib 119 and a sixth rib 1110 protruding from the plate 114, with the fifth rib 119 and the sixth rib 1110 spaced apart to form a third guide groove 1123. Thus, by providing the fifth rib 119 and the sixth rib 1110 protruding from the plate 114 and spaced apart to form the third guide groove 1123, when the low-temperature gas is conveyed to the third guide groove 1123, the fifth rib 119 and the sixth rib 1110 can guide the low-temperature gas along a predetermined path to accurately deliver it to the target position, thereby improving the reliability of the refrigerator 1's cooling process.

[0085] It should be noted that there are several ways to implement the rib on the plate 114, including integral molding of the rib and the plate 114 (e.g., injection molding) and separate manufacturing and reassembly (e.g., the rib and the plate 114 are manufactured separately, and then the rib and the plate 114 are connected after the manufacturing is completed).

[0086] like Figure 4 as well as Figure 8As shown, in some embodiments, the first air outlet 140 is connected to the temperature-changing cavity 211, so that the first guide channel 1121 communicates with the temperature-changing cavity 211 through the first air outlet 140. Thus, when the refrigerator 1 is working, low-temperature gas is transported from the air inlet 113 to the airflow guide channel 112 via the centrifugal fan 300, and at least a portion of the low-temperature gas is transported to the first guide channel 1121, and then transported to the temperature-changing cavity 211 through the first air outlet 140 to cool the temperature-changing cavity 211.

[0087] like Figure 5 as well as Figure 8 As shown, in some embodiments, the centrifugal fan 300 is disposed in the mounting cavity 111, and the air inlet end of the centrifugal fan 300 is positioned facing the air inlet 113. Thus, when installing the centrifugal fan 300, by positioning the air inlet end of the centrifugal fan 300 towards the air inlet 113, the centrifugal fan 300 can draw in low-temperature gas from the air inlet 113 during operation and output the low-temperature gas to the airflow guide channel 112 through the air outlet end of the centrifugal fan 300, which is beneficial for the transport of low-temperature gas within the airflow guide channel 112.

[0088] like Figure 5 as well as Figure 9 As shown, in some embodiments, the fluid channel cover 200 is provided with a second air outlet 210. Thus, when the refrigerator 1 is working, low-temperature gas is transported from the air inlet 113 to the fluid channel formed by the connection between the fluid channel cover 200 and the guide housing 100 via the centrifugal fan 300. The fluid channel is connected to the second air outlet 210, so that the low-temperature gas can be output through the second air outlet 210.

[0089] like Figure 5 as well as Figure 9 As shown, in some embodiments, the second air outlet 210 is connected to the freezer compartment 22. In this way, low-temperature gas can be delivered to the freezer compartment 22 through the second air outlet 210.

[0090] like Figure 5 as well as Figure 9 As shown, in some embodiments, the second air outlet 210 includes multiple outlets, which are spaced apart on the fluid channel cover 200. Thus, by providing multiple outlets 210, the cooling efficiency of the storage chamber can be improved.

[0091] like Figure 5As shown, in some embodiments, the gas delivery assembly 10 further includes an insulation layer 400, which is disposed in at least one of the flow guide housing 100 and the fluid channel cover 200. Thus, the insulation layer 400 effectively insulates the fluid channel of the refrigerator 1, reducing the possibility of external heat entering the fluid channel and the rate of loss of internal low-temperature gas, thereby maintaining a low-temperature environment in the fluid channel of the refrigerator 1.

[0092] It should be noted that the insulation layer 400 can be made of various materials, including insulation cotton, polystyrene, polyurethane foam, and copper foil sponge, etc.

[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A flow guide shell, characterized in that, include: The shell body includes a mounting cavity for installing a centrifugal fan and at least two airflow guide channels spaced circumferentially along the mounting cavity. The bottom of the mounting cavity has an air inlet communicating with the airflow guide channels. One of the at least two airflow guide channels includes a first guide channel for supplying gas to a temperature-changing chamber. A flow guide is disposed between the mounting cavity and the first guide groove, and the flow guide is used to guide gas to the first guide groove.

2. The flow guide shell according to claim 1, characterized in that, The shell body includes a plate, a first rib, and a second rib. The mounting cavity is disposed in the plate. The first rib and the second rib are disposed in the plate to form the first guide groove. The drainage member is fixedly connected to the first rib and is spaced apart from the second rib.

3. The flow guide shell according to claim 2, characterized in that, The drainage component is integrally formed with the first protruding rib; And / or, the drainage element forms an obtuse angle with the first rib; And / or, the first guide groove is further provided with a first air outlet spaced apart from the air inlet, and the first air outlet is located near the first protruding rib.

4. The flow guide shell according to claim 3, characterized in that, The draining component and the second rib are spaced apart between the first air outlet and the air inlet.

5. The flow guide housing according to any one of claims 1 to 4, characterized in that, The at least two airflow guide channels further include a second guide channel spaced apart from the first guide channel along a first direction; The flow guide housing also includes an anti-backflow component, which is fixedly connected to the flow guide component and disposed between the mounting cavity and the second guide groove to prevent gas flowing to the first guide groove from flowing back to the second guide groove.

6. The flow guide shell according to claim 5, characterized in that, The anti-backflow component and the diversion component are connected at an acute angle; And / or, the anti-backflow component and the drainage component cooperate to form a volute structure; And / or, the anti-backflow component is arc-shaped and recessed in a direction away from the mounting cavity.

7. The flow guide shell according to claim 5, characterized in that, The at least two airflow guide channels further include a third guide channel spaced apart from the second guide channel along a second direction; the first direction intersects the second direction.

8. The flow guide shell according to claim 1, characterized in that, The shell body includes a plate having the mounting cavity; The airflow guide groove is formed by the recess of the plate; or, the shell body further includes a rib for forming the airflow guide groove, the rib being fixed to the plate.

9. A gas delivery assembly, characterized in that, The device includes a centrifugal fan, a fluid channel cover, and a flow guide housing as described in any one of claims 1 to 8. The centrifugal fan is disposed in the mounting cavity, and the air inlet end of the centrifugal fan is oriented toward the air inlet. The fluid channel cover is connected to the flow guide housing to cover the airflow guide groove to form a fluid channel. The fluid channel cover is provided with a second air outlet communicating with the freezer compartment.

10. A refrigerator, characterized in that, The device includes a housing assembly, an evaporator, and a gas delivery assembly as described in claim 9. The housing assembly has a freezing compartment and a refrigerated compartment with a variable temperature chamber. The gas delivery assembly is fixed to the freezing compartment and divides the freezing compartment into a refrigeration chamber and a freezing chamber. The evaporator is disposed in the refrigeration chamber. The air inlet is connected to the refrigeration chamber. The first guide groove is connected to the variable temperature chamber. The second air outlet is connected to the freezing chamber.

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