Refrigerator cold air duct device and refrigerator

Abstract

The application discloses a refrigerator cold storage air duct device and a refrigerator, which comprises a fan cover, an air duct foam installed in the fan cover, an air duct formed in the air duct foam, an air inlet formed at the bottom of the air duct foam, air outlet channels formed at both sides of the top of the air duct foam, a plurality of first air resistance parts vertically and separately arranged at the air outlet channels on the air duct foam, gaps between the first air resistance parts forming air outlets, the first air resistance parts at the top extending horizontally to the inside, the end of the first air resistance part extending horizontally being in a round angle shape, the bottom end and the top end of the first air resistance part extending horizontally being in arc shapes, a fan arranged between the two air outlet channels, second air resistance parts symmetrically protruding on both sides of the fan on the air duct foam, a gap formed between the two second air resistance parts being communicated with the air duct, and the air discharged by the fan forming a Coanda effect with the air in the air duct through the second air resistance parts and the first air resistance parts.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerator production, and particularly relates to a refrigerator cold storage air duct device and a refrigerator. BACKGROUND

[0002] The cold storage air duct of a refrigerator refers to a passage through which cold air flows to a cold storage chamber. The cold storage air duct is located between a freezing chamber and a cold storage chamber, and cold air is sent to the cold storage chamber through a fan and an air duct system to keep the temperature in the cold storage chamber lower than the room temperature. The cold storage air duct is usually made of plastic or metal and has certain insulation performance to prevent cold air leakage or temperature loss.

[0003] The existing refrigerator cold storage air duct device structure is shown in the granted patent: air duct device and refrigerator (application number: 2018220170009). The air duct device can realize blowing of cold air from a freezing chamber and then entering a cold storage chamber. The cold storage chamber has a long air inlet path, and the cold energy loss is large, which easily leads to the defect that the cold air amount at the tail end of the air duct device is small, causing the temperature of the upper part of the cold storage chamber to be too high and causing food to deteriorate. Moreover, the air duct device has a front air outlet, which is easily blocked by food, causing the temperature of the cold storage chamber to be unable to be effectively cooled. The number and size of the front air outlets of each layer are inconsistent, which seriously affects the appearance of the product.

[0004] The existing refrigerator cold storage air duct device structure is shown in the applied patent: cold storage double air duct device with electric air door and refrigerator (application number: 202211298107X). The air duct device can realize blowing of cold air from a freezing chamber and then entering a cold storage chamber through an air door. The cold storage chamber has a long air inlet path, and the cold energy loss is large, which easily leads to the defect that the cold air amount at the tail end of the air duct device is small, causing the temperature of the upper part of the cold storage chamber to be too high and causing food to deteriorate. The air door is arranged at the lower part of a cold storage air cover assembly, and the sealing reliability of the assembly with the cabinet is poor during assembly, which easily leads to air leakage and causes the major quality problem that the air door is frozen and unable to work. SUMMARY

[0005] The present application relates to the technical field of refrigerator production, and particularly relates to a refrigerator cold storage air duct device and a refrigerator.

[0006] The present application relates to the technical field of refrigerator production, and particularly relates to a refrigerator cold storage air duct device and a refrigerator.

[0007] A refrigerator cold storage air duct device comprises:

[0008] an air cover;

[0009] A wind channel foam is installed in the wind cover, a wind channel is formed in the wind channel foam, an air inlet is formed at the bottom of the wind channel foam, air outlet channels are formed at both sides of the top of the wind channel foam, a plurality of first air resistance parts are vertically and spaced apart and protrude from the top of the wind channel foam at the air outlet channels, the gaps between the plurality of first air resistance parts form air outlets, and the first air resistance parts at the top extend laterally inward;

[0010] The end of the laterally extending first air resistance part is rounded, and the bottom end and the top end are both arc-shaped.

[0011] A fan is arranged between the two air outlet channels, second air resistance parts are symmetrically protruded from the wind channel foam at both sides of the fan, and the gap formed between the two second air resistance parts is in communication with the wind channel.

[0012] The air discharged by the fan forms a Coanda effect with the air in the wind channel through the second air resistance parts and the first air resistance parts.

[0013] The shape of the wind channel is "V".

[0014] As a further scheme of the present application, the air outlets include a first air outlet, a second air outlet, and a third air outlet, which are vertically arranged in order from top to bottom.

[0015] As a further scheme of the present application, the fan is located below the first air outlet.

[0016] As a further scheme of the present application, the air inlet at the bottom of the wind channel foam and the air outlet channels at both sides of the top of the wind channel foam are both in communication with the wind channel.

[0017] As a further scheme of the present application, a wind channel foam cover is arranged at the air inlet of the wind channel foam, the air inlet includes a first air inlet and a second air inlet, and the wind channel foam cover is also provided with a first opening and a second opening matched with the first air inlet and the second air inlet.

[0018] As a further scheme of the present application, a fourth air outlet is arranged at the back of the wind cover, and the fourth air outlet is in communication with the second air inlet.

[0019] As a further scheme of the present application, a temperature sensing element is further arranged on the wind cover.

[0020] A refrigerator comprises:

[0021] A refrigeration chamber comprises a plurality of functional areas.

[0022] The air duct device according to any one of claims 1 to 7 is arranged at the back of the refrigerating chamber, and is used for dredging cold air and conveying the cold air to the plurality of functional areas in the refrigerating chamber.

[0023] Advantages of the present application:

[0024] The present application solves the defect of high temperature at the top of the refrigerating chamber by adding a centrifugal fan and a guide groove at the top.

[0025] The present application solves the risk of blockage of the air outlet and the appearance defect of the existing structure by designing the air outlet on the side, thereby improving the product competitiveness.

[0026] The present application solves the major defect of icing of the air door caused by poor sealing of the air duct device after assembly by arranging the double air door in the foaming layer of the refrigerator body.

[0027] The air duct device of the present application utilizes the Coanda effect principle to increase the air inlet amount from freezing to refrigerating, realizes rapid refrigeration of the refrigerating chamber, reduces the start-stop time of the compressor, reduces the power consumption of the product, and improves the product competitiveness. BRIEF DESCRIPTION OF DRAWINGS

[0028] The present application will be further described below with reference to the accompanying drawings.

[0029] Figure 1 is a split structure schematic diagram of the present application;

[0030] Figure 2 is a structure schematic diagram of the air duct foam and the air cover of the present application;

[0031] Figure 3 is a structure schematic diagram of the air duct foam of the present application;

[0032] Figure 4 is a rear view structure diagram of the air cover of the present application;

[0033] Figure 5 is a structure schematic diagram of the air duct foam of the present application;

[0034] Figure 6 is a structure schematic diagram of the air duct foam cover of the present application;

[0035] Figure 7 is a schematic diagram of the air flow direction of the present application;

[0036] Figure 8 the arrow in indicates high-speed airflow;

[0037] Figure 9 the arrow in indicates supplementary airflow.

[0038] Figure 10is a schematic view of the positions of the freezer outlet, the freezer inlet and the evaporator assembly.

[0039] In the figure: 1, the shroud; 11, the front cover; 12, the rear cover; 2, the air duct foam; 201, the air duct; 2011, the first inlet; 2012, the second inlet; 2013, the first outlet; 2014, the second outlet; 2015, the third outlet; 3, the air duct foam cover; 31, the first opening; 32, the second opening; 5, the fan; 6, the return air inlet; 7, the fourth outlet; 8, the temperature sensing element; 901, the damper; 902, the freezer outlet; 903, the freezer air duct assembly; 904, the centrifugal fan assembly; 905, the freezer inlet; 906, the evaporator assembly. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] Embodiment one, please refer to Figures 1-2 The present application is a refrigerator cold storage air duct device, comprising:

[0042] The shroud 1;

[0043] The air duct foam 2 is installed in the shroud 1, and the gap between the air duct foam 2 and the edge of the shroud 1 is filled with sealing sponge. The sealing sponge is a sealing material made of sponge material, which is usually used to fill or seal the gap between objects to prevent the penetration or leakage of gas, liquid or impurities.

[0044] The air duct 201 is formed in the air duct foam 2, the air duct foam 2 has an air inlet at the bottom, and the air duct foam 2 has air outlet channels at the top on both sides. A plurality of first air resistance parts are vertically spaced apart and protrude from the air duct foam 2 at the air outlet channels. The gap between the plurality of first air resistance parts forms an air outlet. The first air resistance parts at the top extend inwardly and laterally, and the number of first air resistance parts is at least two. The number of air outlets formed by the two first air resistance parts and the air duct foam 2 is three.

[0045] The end of the laterally extending first air resistance part is rounded, and the bottom end and the top end are both arc-shaped.

[0046] The blower 5 is arranged between the two air outlet channels. The blower 5 can be a centrifugal blower. Second air-blocking parts protrude symmetrically on both sides of the blower 5 on the air duct foam 2. The gap formed between the two second air-blocking parts communicates with the air duct 201, and the gap between the two second air-blocking parts is in the shape of a Chinese character 'field'.

[0047] The air discharged from the blower 5 forms the Coanda effect with the air in the air duct 201 through the second air-blocking part and the first air-blocking part.

[0048] Embodiment 2. Please refer to Figures 1-3 As shown, the present invention is a refrigerator refrigerating air duct device, including:

[0049] The air hood 1;

[0050] The air duct foam 2 is installed in the air hood 1. Sealing sponges are filled in the gaps between the air duct foam 2 and the edge of the air hood 1. The sealing sponges are a kind of sealing material made of sponge materials, usually used to fill or seal the gaps between objects to prevent the penetration or leakage of gases, liquids or impurities.

[0051] An air duct 201 is formed in the air duct foam 2. The shape of the air duct 201 is 'V'-shaped. An air inlet is formed at the bottom of the air duct foam 2. Air outlet channels are opened on both sides at the top of the air duct foam 2. A plurality of first air-blocking parts protrude vertically and at intervals on the air duct foam 2 at the positions of the air outlet channels. The gaps between the plurality of first air-blocking parts form an air outlet. The top first air-blocking part extends horizontally inward. The number of the first air-blocking parts is at least two, and the number of air outlets formed by the two first air-blocking parts and the air duct foam 2 is 3. The air outlets include a first air outlet 2013, a second air outlet 2014 and a third air outlet 2015. The first air outlet 2013, the second air outlet 2014 and the third air outlet 2015 are arranged vertically from top to bottom in sequence;

[0052] The end of the horizontally extending first air-blocking part is rounded, and both its bottom end and top end are arc-shaped;

[0053] The blower 5 is arranged between the two air outlet channels. The blower 5 is located below the first air outlet 2013. The blower 5 can be a centrifugal blower. Second air-blocking parts protrude symmetrically on both sides of the blower 5 on the air duct foam 2. The gap formed between the two second air-blocking parts communicates with the air duct 201, and the gap between the two second air-blocking parts is in the shape of a Chinese character 'field';

[0054] The air discharged from the blower 5 forms the Coanda effect with the air in the air duct 201 through the second air-blocking part and the first air-blocking part.

[0055] Embodiment 3. Please refer to Figures 1-6As shown in the figure, the present invention is a refrigerating air duct device for a refrigerator, comprising:

[0056] An air hood 1;

[0057] An air duct foam 2 is installed inside the air hood 1. A sealing sponge is filled in the gap between the air duct foam 2 and the edge of the air hood 1. The sealing sponge is a sealing material made of sponge material and is usually used to fill or seal the gaps between objects to prevent the penetration or leakage of gas, liquid or impurities.

[0058] An air duct 201 is formed inside the air duct foam 2. The shape of the air duct 201 is "V" - shaped. An air inlet is formed at the bottom of the air duct foam 2. Air outlet channels are opened on both sides at the top of the air duct foam 2. A plurality of first air blocking parts protrude vertically and at intervals at the positions of the air outlet channels on the air duct foam 2. The gaps between the plurality of first air blocking parts form air outlets. The first air blocking part at the top extends horizontally inwards. The number of the first air blocking parts is at least two. The number of air outlets formed by the two first air blocking parts and the air duct foam 2 is 3. The air outlets include a first air outlet 2013, a second air outlet 2014 and a third air outlet 2015. The first air outlet 2013, the second air outlet 2014 and the third air outlet 2015 are arranged vertically from top to bottom in sequence;

[0059] The air inlet at the bottom of the air duct foam 2 and the air outlet channels on both sides at the top of the air duct foam 2 are both connected to the air duct 201. An air duct foam cover 3 is arranged at the air inlet of the air duct foam 2. The air inlet includes a first air inlet 2011 and a second air inlet 2012. The air duct foam cover 3 is also provided with a first opening 31 and a second opening 32 which cooperate with the first air inlet 2011 and the second air inlet 2012. A fourth air outlet 7 is arranged on the back of the air hood 1. The fourth air outlet 7 is connected to the second air inlet 2012.

[0060] The end of the horizontally extending first air blocking part is in a rounded - corner shape, and both its bottom end and top end are arc - shaped;

[0061] A fan 5 is arranged between the two air outlet channels. The fan 5 is located below the first air outlet 2013. The fan 5 can be a centrifugal fan. Second air blocking parts protrude symmetrically on both sides of the fan 5 on the air duct foam 2. The gap formed between the two second air blocking parts is connected to the air duct 201. The gap between the two second air blocking parts is in a "field" shape;

[0062] The air discharged by the fan 5 forms the Coanda effect with the air in the air duct 201 through the second air blocking parts and the first air blocking parts.

[0063] In addition to the wind cover 1, a temperature sensing element 8 is also provided in the fourth embodiment based on the first, second or third embodiment. The temperature sensing element refers to a component that can sense temperature changes and respond to them. In a refrigerator, the temperature sensing element generally refers to a temperature sensor, which is used to monitor the temperature inside the refrigerator compartment or freezer compartment. The temperature sensor can work on different principles, such as thermocouples, thermistors or semiconductor temperature sensors.

[0064] The temperature sensor converts the sensed temperature into a corresponding electrical signal, which is transmitted to the control system through the circuit to control the refrigeration or heating operation of the refrigerator. The control system adjusts the refrigerant flow, compressor running time and other parameters of the refrigerator compartment or freezer compartment according to the signal of the temperature sensor, to maintain the set temperature range.

[0065] It should be noted that:

[0066] The sealing sponge is usually made of polymeric sponge materials, such as polyurethane sponge, polyethylene sponge, etc. These materials have good elasticity and softness, and can be easily cut and formed into the required shape and size. The sealing sponge has the following characteristics and applications: sealing performance: the sealing sponge can fill the gap between objects, effectively preventing the penetration or leakage of gas, liquid and impurities. Cushioning and shock absorption: due to the softness and elasticity of the sealing sponge, it can play a role in cushioning and shock absorption, protecting objects from external impact and vibration. Sound absorption and sound insulation: the porous structure of the sealing sponge can effectively absorb sound and isolate sound wave propagation, playing a role in sound absorption and sound insulation. Insulation performance: some sealing sponge materials have good insulation performance, which can be used in electronic, electrical and communication equipment fields, playing a role in insulation and protection. Application fields: sealing sponge is widely used in automobile, electronic, electrical, building, aerospace, medical equipment and other fields, for sealing, shock absorption, sound insulation and insulation, etc. to improve the performance and reliability of products.

[0067] Air duct foam 2, also known as air duct insulation foam, is an insulation material used in air conditioning, ventilation systems. It is usually made of closed-cell polymeric foam, such as polyurethane foam, polyethylene foam, etc.

[0068] The air duct foam 2 has the following characteristics and applications: insulation performance: the air duct foam 2 has good insulation performance, which can isolate the temperature difference and sound transmission between the inside and outside of the air duct, reducing energy loss and noise impact. Lightweight and soft: the air duct foam 2 material is light and soft, which can be easily cut and installed into various air duct shapes, providing good sealing and insulation effect. Heat and cold resistance: the air duct foam 2 generally has certain heat and cold resistance, which can adapt to different working environments and temperature requirements. Flame retardant performance: some air duct foam 2 materials have good flame retardant performance, which can reduce the risk of fire. Environmentally friendly and healthy: the air duct foam 2 material generally meets environmental protection standards and does not release harmful gases, which is harmless to human health. Application field: the air duct foam 2 is widely used in air conditioning, ventilation systems in the fields of building, aerospace, automobile, electronics, electrical appliances, etc., for heat insulation, sound insulation and protection of air ducts. It can reduce energy consumption, improve system efficiency, and at the same time provide a comfortable indoor environment.

[0069] The cold air heat exchange principle of the refrigeration compartment is as follows: hot air at the return air inlet of the refrigeration compartment is sent to the lower part of the evaporator in the freezing compartment through the high-low pressure principle, exchanges heat with the evaporator, is sucked by the freezing fan and output to the air inlet of the embodiment, and the cold air is divided into left and right channels through the guide boss and the inner wall of the channel. The cold air is blown out from the air outlets of each layer, exchanges heat with the food in each layer, and the hot air generated after the heat exchange is sucked into the bottom of the freezing compartment through the return air inlet. The complete heat exchange is achieved through the above-mentioned repeated circulation, so that the refrigeration purpose of the refrigeration compartment is achieved.

[0070] In order to solve the problem of high or uneven temperature at the top of the refrigeration compartment, a centrifugal fan and multiple narrow air ducts are added at the top of the air duct device. The cold quantity from the freezing compartment to the refrigeration compartment is increased by using the Coanda effect principle, especially the cold quantity at the top of the air duct device, so that the effect of rapid refrigeration of the refrigeration compartment is achieved, and the power consumption is saved.

[0071] The temperature of the refrigeration compartment is automatically controlled by the temperature sensor in the foaming layer of the refrigerator body and the air duct device. When the temperature sensor senses that the temperature of the refrigeration compartment is high, the electric signal is transmitted to the control panel to control the air door to open and deliver cold quantity. When the temperature sensor senses that the temperature of the refrigeration compartment is low, the electric signal is transmitted to the control panel to control the air door to close and stop delivering cold quantity.

[0072] The application of the present invention can effectively increase the air inlet quantity from freezing to refrigeration, achieve rapid refrigeration of the refrigeration compartment, reduce the start and stop time of the compressor, and reduce the power consumption of the product.

[0073] The application of the present invention can solve the problem of ice formation at the bottom air door of the existing air duct assembly.

[0074] The application of the present invention can solve the defect of affecting the appearance of the front air outlet of the existing air duct assembly.

[0075] The application can solve the problem of increasing repair cost of the damaged air duct assembly in the prior art.

[0076] The application has simple production process, the air duct device is assembled from top to bottom by extrusion, which can ensure the sealing effectiveness between the air duct device and the box, reduce the labor intensity of workers, and improve the production efficiency of the assembly line.

[0077] It should also be noted that:

[0078] Figure 8 The arrow in the figure indicates high-speed airflow, which is guided out of the first layer air outlet along the top arc surface under the effect of the Coanda effect;

[0079] Figure 9 The arrow in the figure indicates a supplementary airflow, and the low-pressure area formed when the high-speed airflow flows is also guided out of the lower end of the first layer air outlet along the arc surface under the effect of the Coanda effect, thereby increasing the air intake for freezing and refrigeration and achieving rapid refrigeration of the refrigeration chamber.

[0080] According to the cooling capacity requirements of each layer, the sizes of the air outlets of each layer are different, and the air outlets gradually increase from bottom to top, and the Coanda effect is used to guide as much cold air as possible to the uppermost vertical layer, and then the cold air is sunk and the hot air is floated according to the natural principle, so as to ensure the refrigeration temperature of the uppermost layer.

[0081] The width of the air duct passage is changed to change the cold air pressure.

[0082] A refrigerator comprises:

[0083] The refrigeration chamber comprises a plurality of functional areas.

[0084] The air duct device according to any one of claims 1 to 7 is arranged at the back of the refrigeration chamber, and is used to dredge cold air and deliver the cold air to the plurality of functional areas in the refrigeration chamber.

[0085] The refrigerator further comprises a freezing chamber.

[0086] The freezing chamber is provided with a freezing air duct assembly 903 containing a centrifugal fan assembly 904, and a freezing chamber air outlet 902 is arranged above the freezing air duct assembly 903, which is in communication with the refrigeration chamber air inlet, and a damper 901 is further arranged between the freezing chamber air outlet 902 and the air duct device, which can automatically control the refrigeration chamber air inlet in the foaming layer of the box.

[0087] An evaporator assembly 906 is arranged below the freezing air duct assembly 903, and a freezing chamber air inlet 905 is also arranged below the freezing air duct assembly 903.

[0088] The above has been described in detail one embodiment of the present application, but the content is only the preferred embodiment of the present application, cannot be considered for limiting the scope of the present application. Any equivalent changes and improvements made in the scope of the present application, should still belong to the scope of the claims of the present application.

Claims

1. A refrigerator refrigeration air duct device, characterized in that, include: Wind shield (1); A duct foam (2) is installed inside the hood (1). A duct (201) is formed inside the duct foam (2). An air inlet is formed at the bottom of the duct foam (2). An air outlet is provided on both sides of the top of the duct foam (2). A plurality of first wind-blocking parts are vertically spaced and protruding on the duct foam (2) at the air outlet. The gap between the plurality of first wind-blocking parts forms an air outlet. The first wind-blocking parts at the top extend laterally inward. The first wind-blocking part, which extends laterally, has rounded corners at its ends, with both its bottom and top ends being arc-shaped. A fan (5) is set between the two air outlet channels. The air duct foam (2) has symmetrical second wind-blocking parts protruding on both sides of the fan (5). The gap formed between the two second wind-blocking parts is connected to the air duct (201). The air discharged by the fan (5) forms a Coanda effect with the air in the air duct (201) through the second windbreak and the first windbreak; The air duct (201) is V-shaped.

2. A refrigerator refrigeration air duct device according to claim 1, characterized in that, The air outlet includes a first air outlet (2013), a second air outlet (2014), and a third air outlet (2015), which are arranged vertically from top to bottom in sequence.

3. A refrigerator refrigeration air duct device according to claim 2, characterized in that, The fan (5) is located below the first air outlet (2013).

4. A refrigerator refrigeration air duct device according to claim 2, characterized in that, The air inlet at the bottom of the air duct foam (2) and the air outlets on both sides of the top of the air duct foam (2) are both connected to the air duct (201).

5. A refrigerator refrigeration air duct device according to claim 4, characterized in that, The air inlet of the air duct foam (2) is provided with an air duct foam cover (3). The air inlet includes a first air inlet (2011) and a second air inlet (2012). The air duct foam cover (3) is also provided with a first opening (31) and a second opening (32) that cooperate with the first air inlet (2011) and the second air inlet (2012).

6. A refrigerator refrigeration air duct device according to claim 5, characterized in that, The back of the hood (1) is provided with a fourth air outlet (7), which is connected to the second air inlet (2012).

7. A refrigerator refrigeration air duct device according to claim 1, characterized in that, The fan cover (1) is also equipped with a temperature sensing element (8).

8. A refrigerator, characterized in that, include: The refrigerator compartment includes multiple functional areas; The air duct device as described in any one of claims 1 to 7, wherein the air duct device is disposed at the back of the refrigerator compartment, and the air duct device is used to circulate cold air and deliver cold air to the plurality of functional areas inside the refrigerator compartment.

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