CN111692797A - Air-cooled refrigerator - Google Patents

Abstract

The invention provides an air-cooled refrigerator, comprising: a freezing inner tank, the interior of which defines a freezing compartment; a temperature-changing inner tank, which is arranged at the lower part of the freezing inner tank, and whose interior defines a temperature-changing compartment; a freezing evaporator, which is installed in the freezing chamber The inner liner is used to provide cold energy to the freezing compartment and the temperature-changing compartment; the first air duct assembly is arranged on the rear wall of the freezing inner liner, and an air supply air duct that communicates with the freezing evaporator is formed inside; and The damper assembly is installed in the foam layer between the freezing liner and the temperature-changing liner, and communicates with the air supply air duct and the temperature-changing compartment respectively, and is used to open or close the connection between the air supply air duct and the temperature-changing compartment. A damper assembly connected to the first air duct assembly is installed in the foam layer between the freezing liner and the temperature-changing liner, so as to connect the temperature-changing compartment with the freezing evaporator, so that the freezing evaporator can simultaneously flow to the freezing compartment and the freezing chamber. The purpose of the variable temperature room to provide cooling capacity also solves the problem that the damper occupies a large installation space.

Description

air-cooled refrigerator

technical field

The invention relates to the field of freezing and refrigeration, in particular to an air-cooled refrigerator.

Background technique

The refrigeration system of the existing air-cooled refrigerator generally includes two forms, one of which is that the freezing compartment and the temperature-changing compartment have separate air supply circulating refrigeration systems, and the other is using a set of air supply circulating refrigeration systems at the same time. Supply air and cooling to the freezer compartment and the variable temperature compartment.

An air-cooled refrigerator that uses a set of air-supply circulation refrigeration system to supply air to the freezer compartment and the temperature-changing compartment at the same time, the cooling effect is often closely related to the air duct structure, the damper structure, and the location of the damper. How to optimize and improve the above factors to improve the refrigeration effect of the refrigeration system has always been an urgent problem to be solved in the art.

SUMMARY OF THE INVENTION

An object of the present invention is to provide an air-cooled refrigerator with a compact structure in which the freezer compartment and the temperature-changing compartment share a set of air circulation refrigeration system.

A further object of the present invention is to provide an air-cooled refrigerator with an air door that is easy to disassemble and assemble.

In particular, the present invention provides an air-cooled refrigerator, comprising: a freezing inner tank, the interior of which defines a freezing compartment; a temperature-changing inner tank, which is arranged at the lower part of the freezing inner tank, and whose interior defines a temperature-changing compartment; a freezing evaporator, The first air duct assembly is installed in the freezing inner tank and used to provide cold energy to the freezing compartment and the temperature-changing compartment; the first air duct assembly is arranged on the rear wall of the freezing inner tank, and is internally formed with air supply that communicates with the freezing evaporator and the damper assembly, which is installed in the foam layer between the freezing liner and the temperature-changing liner, and communicates with the supply air duct and the temperature-changing compartment respectively, and is used to open or close the space between the supply air duct and the temperature-changing compartment. Connection.

Optionally, the damper assembly includes: a foam carrier, a damper installation cavity is formed inside the damper installation cavity, and the damper installation cavity is formed with a first installation port communicating with the air supply air duct and a second installation port communicating with the temperature-changing compartment; the damper assembly , installed in the air door installation cavity, including the air door for opening and closing the connection between the air supply air duct and the temperature-changing compartment and the air door motor for driving the air door.

Optionally, the bottom of the freezing inner tank is provided with a first air supply port connected to the air supply air duct; the air inlet of the damper assembly is installed in the vertical projection of the first air supply port on the foam carrier.

Optionally, the air-cooled refrigerator further includes: a second air duct assembly disposed on the rear wall of the temperature-changing inner liner, and a temperature-changing air duct communicating with the temperature-changing compartment is formed in the interior thereof for supplying air to the temperature-changing compartment.

Optionally, the top of the temperature-changing inner tank is provided with a second air supply port connected with the temperature-changing air duct; the second installation port is connected with the second air supply port.

Optionally, the top and bottom of the foam carrier are respectively formed with positioning structures matched with the bottom of the freezing liner and the top of the temperature-changing liner, for fixing the position of the foam carrier in the foam layer.

Optionally, the top and bottom surfaces of the foam carrier are respectively pasted with sealing sponges, and the sealing sponges are respectively provided with installation holes at positions opposite to the first installation opening and the second installation opening; The gaps between the foam carrier and the bottom of the freezer liner and between the foam carrier and the top of the variable temperature liner are sealed.

Optionally, the sealing sponge is also provided with first sealing rings at the installation holes at the top and bottom of the foam carrier; The gap between the foam carrier and the top of the variable temperature liner is sealed.

Optionally, the damper assembly further includes: a second sealing ring, arranged in the gap between the damper assembly and the foam carrier; a third sealing ring, sleeved on the damper motor; and a fourth sealing ring, arranged in the damper assembly of the air inlet.

Optionally, the foam carrier is further formed with a positioning groove at the bottom, and the foam carrier further comprises a terminal foam cover matched with the positioning groove; the damper assembly further comprises a butt terminal, which is installed in the positioning groove and connected with the damper motor to Send a drive signal to the damper motor.

In the air-cooled refrigerator of the present invention, the temperature-changing inner liner is arranged at the lower part of the freezing inner liner, and the freezing evaporator and the first air duct assembly are installed in the freezing inner liner at the same time. The damper assembly connected to the first air duct assembly is installed to communicate the temperature changing compartment with the freezing evaporator, so as to achieve the purpose of providing cooling capacity to the freezing compartment and the temperature changing compartment at the same time. The formation of the air supply air duct in the first air duct assembly effectively utilizes the space in the refrigerating liner and avoids adding an independent air duct for the temperature-changing compartment. The arrangement of the air door assembly between the two inner bladders also cleverly solves the problem that the air door occupies a large installation space, and improves the compactness of the air-cooled refrigerator as a whole.

Further, the air-cooled refrigerator of the present invention uses the foam carrier as the basis for installing the damper assembly, which not only facilitates fixing the installation position of the damper assembly, but also facilitates the direct removal of the damper assembly when the damper assembly may be repaired later. .

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

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

1 is an overall schematic diagram of an air-cooled refrigerator according to an embodiment of the present invention;

Fig. 2 is a side cross-sectional schematic diagram of an air-cooled refrigerator according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of part of components of a first air-cooling system of an air-cooled refrigerator according to an embodiment of the present invention;

4 is a partial enlarged view of a first air-cooling system of an air-cooled refrigerator according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of part of the first air duct assembly of the air-cooled refrigerator according to an embodiment of the present invention;

6 is a schematic diagram of an air distribution part of an air-cooled refrigerator according to an embodiment of the present invention;

7 is an exploded view of a first air duct assembly of an air-cooled refrigerator according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a wind shield and an air supply fan of an air-cooled refrigerator according to an embodiment of the present invention;

FIG. 9 is an exploded view of a windshield of an air-cooled refrigerator according to an embodiment of the present invention;

10 is a schematic diagram of a damper assembly of an air-cooled refrigerator according to an embodiment of the present invention;

11 is a schematic cross-sectional view of a damper assembly of an air-cooled refrigerator according to an embodiment of the present invention;

12 is an exploded view of a damper assembly of an air-cooled refrigerator according to an embodiment of the present invention.

Detailed ways

This embodiment provides an air-cooled refrigerator 100 , and the air-cooled refrigerator 100 may include: a freezing inner container 101 , a refrigerating inner container 103 , a temperature-changing inner container 105 , a first air cooling system 110 and a second air cooling system 180 .

The freezing inner container 101 defines a freezing compartment 102 inside. The freezing compartment 102 has a forward opening, and the height is greater than the length and the width. The refrigerating inner container 103 is arranged side by side with the freezing inner container 101, and the interior thereof defines a refrigerating compartment 104. The refrigerating compartment 104 has a forward opening, and its height is greater than its length and width. The temperature-changing inner liner 105 is arranged at the lower part of the freezing inner liner 101 and the refrigerating inner liner 103 , and a temperature-changing compartment 106 is defined therein. The storage temperature of the refrigerating compartment 104 may be 2-9°C, or may be 4-7°C; the storage temperature of the freezing compartment 102 may be -22--14°C, or may be -20-16°C. The temperature range of the variable temperature chamber 106 is typically -14°C to -22°C. The variable temperature compartment 106 can be adjusted according to needs to store suitable food, or as a fresh storage room. The freezing compartment 102 and the refrigerating compartment 104 are arranged side by side on the top of the changing temperature compartment 106, and the width of the changing temperature compartment 106 is equal to the sum of the freezing compartment 102 and the refrigerating compartment 104, so that large pieces of food can be stored in the changing temperature compartment 106, Thus, the problem that the side-to-side refrigerator has a limited shape for storing food due to the narrow and long shape of the compartment is overcome. At the same time, since the temperature of the variable temperature compartment 106 is adjustable, it can be used as an intermediate buffer compartment for temporarily relieving the use pressure of the freezing compartment 102 or the refrigerating compartment 104 .

The first air cooling system 110 is arranged in the freezing compartment 102 and the temperature-changing compartment 106 , and is used to provide cooling capacity to the freezing compartment 102 and the temperature-changing compartment 106 . The second air cooling system 180 is arranged inside the refrigerating compartment 104 , and has an independent refrigerating evaporator and an independent refrigerating air duct, and is used to provide cooling capacity to the refrigerating compartment 104 . In this embodiment, the refrigerating evaporator 111 is used to provide cooling capacity to the freezing compartment 102 and the temperature-changing compartment 106 at the same time, which can not only reduce the number of evaporators in the air-cooled refrigerator 100, but also achieve the purpose of reducing costs. Moreover, since there is no need to provide independent air ducts for the freezing compartment 102 and the temperature-changing compartment 106, the air duct arrangement structure of the air-cooled refrigerator 100 is simplified, and the volume of the refrigerator compartment is effectively increased.

The first air cooling system 110 may include: a refrigeration evaporator 111 , a first air duct assembly 112 , a damper assembly 117 , a second air duct assembly 118 and a third air duct assembly 125 .

The refrigerating evaporator 111 is installed inside the refrigerating inner tank 101, and is arranged in the heat exchange cavity 113 jointly enclosed by the first air duct assembly 112 and the rear wall of the refrigerating inner tank 101, and is used to transmit the temperature to the freezing compartment 102 and changing the temperature. Compartment 106 provides cooling. The first air duct assembly 112 is provided with a first thermal insulation cotton 157 on the outer surface adjacent to the refrigerating evaporator 111 to prevent condensation on the surface of the first air duct assembly 112 close to the refrigerating evaporator 111 .

The first air duct assembly 112 is disposed on the rear wall of the freezing inner tank 101 , and together with the rear wall of the freezing inner tank 101 forms a heat exchange cavity 113 for placing the freezing evaporator 111 .

The first air duct assembly 112 is internally formed with an air supply air duct 114 that communicates with the heat exchange cavity 113 for supplying air to the temperature-changing compartment 106 . In addition, the first air duct assembly 112 is also formed with an air supply air duct 153, which is connected to the air supply air duct 114, and the air supply air duct 153 is used for distributing the air entering the air supply from the refrigeration evaporator 111. The air volume of the air duct 114 . The first air duct assembly 112 also has a refrigerating air duct 127 formed therein, which communicates with the heat exchange cavity 113 , and is used for supplying air to the freezing compartment 102 . In addition, the first air duct assembly 112 is also formed with a refrigerating air duct 154, which is connected to the refrigerating air duct 127, and the refrigerating air duct 154 is used to distribute the air volume entering the refrigerating air duct 127 from the refrigerating evaporator 111 .

The first air duct assembly 112 may include: an air dividing part 148 , a wind blocking part 159 and an air duct part 149 .

The air distribution part 148 is arranged in the middle of the first air duct assembly 112 and is located above the freezing evaporator 111, and is formed with an air supply air distribution duct 153 and a freezing air distribution duct 154 which are respectively communicated with the freezing evaporator 111. It is used to distribute the air volume sent from the refrigerating evaporator 111 to the freezing compartment 102 and the temperature-changing compartment 106 . A narrow and long space is formed between the air distribution part 148 and the rear wall of the freezing inner tank 101 , and the space is communicated with the freezing evaporator 111 . The air distribution part 148 may include an air distribution housing 150 and an air supply fan 155 .

The air distribution housing 150 has a fan placement cavity 151 formed inside, and is provided with an air suction port 152. The air suction port 152 is located on the surface of the air distribution housing 150 facing the rear wall of the freezer liner 101, and is used to place the fan placement cavity 151 and the freezer evaporator. 111 Connected.

The air blowing fan 155 is disposed inside the air dividing portion 148 and installed in the fan placement cavity 151 . The air blowing fan 155 communicates with the freezing evaporator 111 and its air intake direction faces the air suction port 152 . In this embodiment, the air supply fan 155 is a centrifugal fan. The centrifugal fan has the advantages of large air supply volume and long air supply distance, etc., and can meet the requirements of supplying air to the freezing compartment 102 and the temperature-changing compartment 106 at the same time. The air distribution portion 148 may also include foam supports 156 formed with fan mounting slots for placement of the air distribution housing 150 .

The air distribution housing 150 is also formed with an air supply air duct 153 and a freezing air distribution duct 154 which are respectively communicated with the fan placement cavity 151. The refrigerating air ducts 127 are connected to each other. There are multiple freezing sub-air ducts 154 , and at least one of the freezing sub-air ducts 154 extends away from the temperature-changing inner container 105 , that is, extends toward the top wall of the freezing inner container 101 . The air intake direction of the air supply sub-duct 153 and the refrigeration sub-air duct 154 is opposite to the circumferential direction of the air supply fan 155, and the air intake areas of the air supply sub-duct 153 and the refrigeration sub-air duct 154 are different, so that the air intake from the air supply air is different. The air volume discharged from the fan 155 enters the air supply sub-duct 153 and the refrigeration sub-air duct 154 respectively according to a certain proportion.

The proportion of the air inlet area of the air supply sub-air duct 153 to the total air inlet area may be 20% to 70%. Preferably, the ratio may be 30% to 60%. More preferably, the ratio may be 40% to 50%.

The proportion of the air intake area of the refrigeration sub-air duct 154 extending away from the temperature-changing inner container 105 to the total air intake area may be 20% to 70%. Preferably, the ratio may be 30% to 60%. More preferably, the ratio may be 40% to 50%.

The proportion of the air inlet area of the refrigeration sub-air duct 154 extending toward the temperature-changing inner liner 105 to the total air inlet area may be 0% to 10%. Preferably, the ratio may be 2% to 8%. More preferably, the ratio may be 4% to 6%.

The ratio of the air inlet area of the above-mentioned sub-air ducts to the total air inlet area is the optimal distribution ratio obtained by the inventor through a large number of theoretical calculations and experimental verification. The ratio of the air area can optimize the cooling capacity distributed between the compartments of the air-cooled refrigerator 100 and different areas inside the compartment, thereby improving the cooling efficiency of the system as a whole and saving energy.

The wind shielding portion 159 is movably arranged on the side of the air dividing portion 148 that is opposite to the refrigerating evaporator 111. By inserting at least a part of the wind shielding portion 159 into the wind dividing portion 148, the refrigerating air dividing duct 154 and the refrigerating air duct 154 can be adjusted. The opening of the connection between the refrigeration evaporators 111 . The wind shielding portion 159 may include a shielding baffle 160, which is matched with the circumferential contour of the air supply fan 155. After the wind shielding portion 159 is inserted into the air dividing portion 148, the shielding baffle 160 is located on the outer circumferential direction of the air supplying fan 155 to prevent The connection between the freezing sub-air duct 154 and the blower fan 155 is cut off, that is, the shielding baffle 160 closes the air outlet of the freezing sub-air duct 154 .

The shielding baffle 160 may only shield part of the refrigerating sub-air ducts 154 or only a few of the plurality of refrigerating sub-air ducts 154, so as to achieve the purpose of controlling the air outlet position and the air outlet volume. For example, the shielding baffle 160 shields a part of the air outlet of the freezing sub-air duct 154 , so that the air intake area of the freezing sub-air duct 154 is reduced, thereby achieving the purpose of changing the air intake volume of the freezing sub-air duct 154 . For another example, the shielding baffle 160 only shields a few of the plurality of refrigerating sub-air ducts 154, so that some refrigerating sub-air ducts 154 in a specific direction can still communicate with the air supply fan 155, so as to control the entry of cold air from a specific location to The purpose of the freezer compartment 102 . In some optional embodiments, the shielding baffle 160 can also shield the air supply air ducts 153 , but only a few of the plurality of freezing air ducts 154 , so as to individually control the air intake of the freezing compartment 102 .

In some other optional embodiments, the shielding baffle 160 is formed with a gap at a position where the air supply sub-duct 153 is circumferentially opposite to the air supply fan 155 , so that when the shielding baffle 160 is inserted into the air distribution portion 148 , the air is supplied The sub-air duct 153 is still in communication with the refrigerating evaporator 111 . When the temperature changing compartment 106 needs to be cooled but the freezing compartment 102 does not need to be cooled, the shielding baffle 160 is inserted into the air distribution part 148 to cut off the connection between the freezing air distribution duct 154 and the blower fan 155, thereby preventing the cooling The amount of water is transferred to the freezing compartment 102 to achieve the purpose of saving energy.

The wind shield 159 may further include a fixed bottom plate 161 and a driving base 164 .

The fixed bottom plate 161 can be in the shape of a disc, is connected to the shielding baffle 160, and has a connecting hole 162 with a thread on the inner surface. The fixed bottom plate 161 is also formed with a sleeve 163, and the sleeve 163 is located on the fixed bottom plate The circumferential outer side of the 161 extends toward the blower fan 155 .

The drive base 164 is disposed on the side of the air distribution part 148 opposite to the refrigeration evaporator 111 , and is provided with a screw 165 which penetrates into the connection hole 162 and matches with it in the direction toward the blower fan 155 . In addition, the driving base 164 is further formed with a limiting column 167 extending toward the air dividing portion 148 , and the limiting column 167 penetrates into the sleeve 163 . The drive base 164 is also installed with a shaft motor 166 for driving the screw rod 165 to rotate, so as to drive the fixed bottom plate 161 to move on the screw rod 165 in a direction parallel to the axial direction of the limiting column 167 .

When the fixed bottom plate 161 moves to the end of the screw 165 close to the air distribution part 148, the shielding baffle 160 is inserted into the air distribution part 148 and completely cuts off the connection between the freezing air distribution duct 154 and the air supply fan 155, and the cold air cannot enter at this time. To the refrigerating sub-air duct 154, that is, the refrigerating evaporator 111 does not refrigerate the freezing compartment 102 at this time. When the fixed bottom plate 161 moves to the end of the screw rod 165 away from the air distribution part 148, the shielding baffle 160 is pulled out from the air distribution part 148 and the connection between the refrigeration air distribution duct 154 and the air supply fan 155 is completely opened, and the cold air can be It enters into the refrigerating sub-air duct 154 , that is, the refrigerating evaporator 111 cools the freezing compartment 102 at this time. When the fixed bottom plate 161 moves between the two ends of the screw rod 165, the shielding baffle plate 160 is inserted into the air distribution part 148 and cuts off the connection part between the freezing air distribution duct 154 and the air supply fan 155, and the cold air can enter the freezing The air inlet duct 154 is divided, but the air intake air volume of the refrigeration air duct 154 is smaller than the air volume when the connection between the refrigeration air duct 154 and the blower fan 155 is fully opened.

The air duct part 149 is connected with the air distribution part 148, and is formed with an air supply air duct 114 and a refrigeration air duct 127 which are respectively connected with the air distribution part 148. The air supply air duct 114 is connected with the air supply air distribution duct 153, and the refrigeration The air duct 127 is connected with the freezing sub-air duct 154 , the air supply air duct 114 is used for supplying air to the temperature-changing compartment 106 , and the freezing air duct 127 is used for supplying air to the freezing compartment 102 . The air supply duct 114 extends from the air distribution portion 148 toward the temperature-changing inner container 105 , that is, extends toward the bottom of the freezing inner container 101 , and is connected to the first air supply port 115 opened at the bottom of the freezing inner container 101 . The air duct portion 149 is provided with a second insulation cotton 158 on the side close to the freezing compartment 102 to prevent condensation on the surface of the air duct portion 149 .

There may be a plurality of refrigerating air ducts 127 , so that the cold air fed into the freezing compartment 102 is evenly distributed, wherein at least one refrigerating air duct 127 is formed in the first air duct assembly 112 and extends away from the temperature-changing inner container 105 . The refrigerating air duct 127 extending away from the temperature-changing inner container 105 can be arranged to allow the cold air to enter the freezer compartment 102 from a higher position, so that the cold air and the food can conduct sufficient heat exchange to improve the cooling efficiency.

The first air duct assembly 112 is further provided with a plurality of cooling air supply ports 128 adapted to the refrigerating air duct 127 , and the plurality of cooling air supply ports 128 are evenly distributed on the first air duct assembly 112 . When there are multiple refrigerating air ducts 127 , each refrigerating air duct 127 includes at least one cooling air supply port 128 .

The first air duct assembly 112 is also provided with a plurality of first refrigerated air return ports 129 located at the bottom thereof for connecting the refrigerating compartment 102 with the heat exchange cavity 113 . The air after the heat exchange with the food is returned to the heat exchange chamber 113 from the first freezing air return port 129 to exchange heat with the freezing evaporator 111 , and further refrigerate the freezing compartment 102 .

The damper assembly 117 is installed in the foam layer between the freezing inner tank 101 and the temperature-changing inner tank 105, and is simultaneously connected with the first air supply port 115 opened at the bottom of the freezing inner tank 101 and the second air supply port 115 opened at the top of the temperature-changing inner tank 105. The tuyere ports 116 are connected to communicate with the air supply air duct 114 and the temperature-changing compartment 106 respectively, and are used to open or close the connection between the air supply air duct 114 and the temperature-changing compartment 106 . The damper assembly 117 is used to control the opening and closing of the connection between the temperature-changing compartment 106 and the refrigerating evaporator 111 , and the air blocking portion 159 in the first air duct assembly 112 is used to control the opening and closing of the connection between the freezing compartment 102 and the refrigerating evaporator 111 . The connection can realize the independent air supply effect of the freezing compartment 102 and the temperature-changing compartment 106 when the freezing evaporator 111 provides cooling capacity to the freezing compartment 102 and the temperature-changing compartment 106 at the same time. The damper assembly 117 may include: a foam carrier 130 , a damper assembly 131 , and a docking terminal 146 .

The foam carrier 130 is installed in the foam layer between the freezing inner liner 101 and the temperature-changing inner liner 105, and a damper installation cavity 132 for installing the damper assembly 131 is formed in the interior thereof, and the damper installation cavity 132 is formed with an air supply air duct. The first installation port 133 communicated with 114 and the second installation port 134 communicated with the temperature changing compartment 106 . The first installation port 133 is connected to the first air supply port 115 , and the second installation port 134 is connected to the second air supply port 116 . The foam carrier 130 is further formed with a positioning groove 144 at the bottom, and the foam carrier 130 may further include a terminal foam cover 145 matched with the positioning groove 144 . Since the damper assembly 117 is integrally installed in the foam layer, the foam carrier 130 is used as a carrier for installing the damper assembly 131 and the butt terminals 146 , which can conveniently fix the installation positions of the damper assembly 131 and the butt terminals 146 .

The top and bottom of the foam carrier 130 are respectively formed with positioning structures 137 matched with the bottom of the freezing inner pot 101 and the top of the temperature-changing inner pot 105, for fixing the position of the foam carrier 130 in the foam layer. In addition, the top and bottom surfaces of the foam carrier 130 are respectively affixed with sealing sponges 138 , and the sealing sponges 138 are respectively provided with installation holes 139 at positions opposite to the first installation opening 133 and the second installation opening 134 . The sealing sponge 138 cooperates with the positioning structure 137 to seal the gaps between the foam carrier 130 and the bottom of the freezing inner pot 101 and between the foam carrier 130 and the top of the temperature-changing inner pot 105 , respectively.

The sealing sponge 138 is also provided with first sealing rings 140 at the mounting holes 139 located at the top and bottom of the foam carrier 130 , respectively. Through the cooperation of the sealing sponge 138 and the first sealing ring 140 , the gaps between the foam carrier 130 and the bottom of the freezing inner pot 101 and between the foam carrier 130 and the top of the temperature-changing inner pot 105 are sealed.

The damper assembly 131 is installed in the damper installation cavity 132 , and includes a damper 135 for opening and closing the connection between the air supply air duct 114 and the variable temperature compartment 106 and a damper motor 136 for driving the damper 135 . The air inlet 147 of the damper assembly 131 is installed in the vertical projection of the first air outlet 115 on the foam carrier 130, so as to maximize the air supply cross-sectional area of the damper assembly 131, and also prevent water accumulation at the damper 135. At the same time, when the damper assembly 131 needs maintenance in the later stage, the damper assembly 131 can be taken out directly through the first air supply port 115 .

The damper assembly 117 may also include a second sealing ring 141 disposed in the gap between the damper assembly 131 and the foam carrier 130 . The third sealing ring 142 is sleeved on the damper motor 136 to play the role of sealing and damping the damper motor 136 . The fourth sealing ring 143 is disposed at the air inlet 147 of the damper assembly 131 to seal the air inlet 147 of the damper assembly 131 .

The docking terminal 146 is installed in the positioning slot 144 and connected to the damper motor 136 to send a driving signal to the damper motor 136 . Installing the docking terminal 146 in the positioning groove 144 can make the docking terminal 146 and the damper assembly 131 docked in place when the box is pre-installed, and it is convenient to plug and unplug the docking terminal 146 when maintenance and disassembly occur later.

The second air duct assembly 118 is disposed on the rear wall of the temperature-changing inner liner 105, and a temperature-changing air duct 119 is formed inside the temperature-changing air duct 119 that communicates with the temperature-changing compartment 106. The variable greenhouse 106 supplies air. The second air duct assembly 118 is also provided with a plurality of temperature-variable air supply ports 120 adapted to the temperature-variable air duct 119 , and the plurality of temperature-variable air supply ports 120 are evenly distributed on the second air duct assembly 118 .

The temperature-changing inner tank 105 is also provided with a first temperature-changing return air outlet 121 on the rear wall, and the second air duct assembly 118 is also formed with a temperature-changing return air cover plate 122 at the bottom. A first return air duct 123 is surrounded, and the first return air duct 123 communicates with the first temperature-variable return air outlet 121 .

The third air duct assembly 125 is installed at the rear of the temperature-changing inner container 105 and the freezing inner container 101 , and a second air return duct 126 is formed in its interior. The freezer liner 101 is also provided with a second variable temperature return air outlet 124 at the bottom of the rear wall, one end of the second return air duct 126 is connected with the first variable temperature return air outlet 121, and the other end is connected with the second variable temperature return air outlet 124, used for The temperature changing compartment 106 is communicated with the refrigerating evaporator 111 . The air after the heat exchange with the food is returned to the heat exchange chamber 113 from the second temperature-changing air return port 124 to exchange heat with the freezing evaporator 111 , and further circulatively cool the temperature-changing compartment 106 .

When the temperature-changing compartment 106 needs to be independently cooled, the air supply control method and the air circulation path of the refrigeration system of the air-cooled refrigerator 100 are as follows:

The air supply control method for the independent cooling of the variable temperature room 106 includes:

The shaft motor 166 drives the driving screw 165 to rotate, so as to drive the fixed bottom plate 161 to move to the end of the screw 165 close to the air distribution part 148 , the shielding baffle 160 is inserted into the air distribution part 148 and separates the cooling air distribution duct 154 and the air supply fan 155 . The connection is completely cut off to close the communication between the freezing compartment 102 and the freezing evaporator 111 ; the damper assembly 117 is opened to open the communication between the temperature changing compartment 106 and the freezing evaporator 111 .

The air circulation path of the variable temperature compartment 106 during cooling is as follows:

After heat exchange between the heat exchange chamber 113 and the refrigerating evaporator 111, the air is sucked into the air distribution part 148 by the air supply fan 155 (centrifugal fan); The air supply sub-duct 153 enters the air supply air duct 114 connected to it, and then enters the variable temperature air duct 119 through the damper assembly 117 installed between the freezing inner tank 101 and the temperature-changing inner tank 105, and finally passes through the opening in the temperature-changing air duct. The temperature-changing air supply port 120 on the 119 enters the temperature-changing compartment 106; the air after the heat exchange between the temperature-changing compartment 106 and the food is completed through the first return air duct 123 and the second return air duct 126 Return to the heat exchange chamber 113, and the freezer The evaporator 111 enters the next cycle after heat exchange.

When the freezing compartment 102 needs to be refrigerated separately, the air supply control method and the air circulation path of the refrigeration system of the air-cooled refrigerator 100 are as follows:

The air supply control method for the independent cooling of the freezing compartment 102 includes:

The shaft motor 166 drives the driving screw 165 to rotate, so as to drive the fixed bottom plate 161 to move to the end of the screw 165 away from the air distribution part 148 , and the shielding baffle 160 is pulled out from the air distribution part 148 and separates the refrigeration air distribution duct 154 and the air supply fan 155 The connection is fully opened to make the freezing compartment 102 communicate with the freezing evaporator 111 ; the damper assembly 117 is closed to close the communication between the temperature changing compartment 106 and the freezing evaporator 111 .

When the freezing compartment 102 is cooled, the air circulation path is as follows:

After the air exchanges heat with the refrigerating evaporator 111 in the heat exchange chamber 113, it is sucked into the air distribution part 148 by the blower fan 155 (centrifugal fan); The sub-air duct 154 enters the refrigerating air duct 127 connected to it, and then enters the freezing compartment 102 through the cooling air supply port 128 provided on the refrigerating air duct 127; The first refrigerated air return port 129 at the bottom of the first air duct assembly 112 returns to the heat exchange chamber 113, exchanges heat with the refrigerated evaporator 111, and then enters the next cycle.

When the temperature changing compartment 106 and the freezing compartment 102 need to be cooled at the same time, the air supply control method of the refrigeration system of the air-cooled refrigerator 100 and the air circulation path are as follows:

The air supply control method for simultaneously cooling the temperature-changing compartment 106 and the freezing compartment 102 includes:

The shaft motor 166 drives the driving screw 165 to rotate, so as to drive the fixed bottom plate 161 to move to the end of the screw 165 away from the air distribution part 148 , and the shielding baffle is drawn out from the air distribution part 148 of 160 and separates the refrigeration air duct 154 and the air supply fan 155 The connection is fully opened, so that the freezing compartment 102 is communicated with the freezing evaporator 111; the damper assembly 117 is opened to open the communication between the temperature changing compartment 106 and the freezing evaporator 111.

The method for adjusting the air volume distribution between the temperature-changing compartment 106 and the freezing compartment 102 includes:

The ratio of the air inlet area of the air supply sub-duct 153 and the refrigeration sub-air duct 154 to the total air intake area is preset, so as to fix the air volume distribution ratio of each room; The screw 165 moves close to one end of the air distribution part 148, and by adjusting the degree of insertion of the shielding baffle 160 into the air distribution part 148, the connection part between the refrigeration air distribution duct 154 and the air supply fan 155 is cut off to adjust the air supply air distribution duct The air intake area of 153 and the freezing sub-air duct 154 accounts for the proportion of the total air intake area, so as to achieve the purpose of adjusting the air volume distribution between the temperature-changing compartment 106 and the freezing compartment 102 .

The air circulation path of the cooling room 106 is as follows:

After heat exchange between the heat exchange chamber 113 and the refrigerating evaporator 111, the air is sucked into the air distribution part 148 by the air supply fan 155 (centrifugal fan); The air supply sub-duct 153 enters the air supply air duct 114 connected to it, and then enters the variable temperature air duct 119 through the damper assembly 117 installed between the freezing inner tank 101 and the temperature-changing inner tank 105, and finally passes through the opening in the temperature-changing air duct. The temperature-changing air supply port 120 on the 119 enters the temperature-changing compartment 106; the air after the heat exchange between the temperature-changing compartment 106 and the food is completed through the first return air duct 123 and the second return air duct 126 Return to the heat exchange chamber 113, and the freezer The evaporator 111 enters the next cycle after heat exchange.

The air circulation path of the refrigeration compartment 102 is as follows:

After the air exchanges heat with the refrigerating evaporator 111 in the heat exchange chamber 113, it is sucked into the air distribution part 148 by the blower fan 155 (centrifugal fan); The sub-air duct 154 enters the refrigerating air duct 127 connected to it, and then enters the freezing compartment 102 through the cooling air supply port 128 provided on the refrigerating air duct 127; The first refrigerated air return port 129 at the bottom of the first air duct assembly 112 returns to the heat exchange chamber 113, exchanges heat with the refrigerated evaporator 111, and then enters the next cycle.

In the air-cooled refrigerator 100 of this embodiment, the temperature-changing inner tank 105 is arranged at the lower part of the freezing inner tank 101, and the freezing evaporator 111 and the first air duct assembly 112 are installed in the freezing inner tank 101. A damper assembly 117 connected to the first air duct assembly 112 is installed in the foam layer between the bladders 105, so as to connect the temperature-changing compartment 106 with the freezing evaporator 111, so that the freezing evaporator 111 can simultaneously flow to the freezing compartment 102 and the refrigerating evaporator 111. The variable temperature compartment 106 serves the purpose of cooling. Forming the air supply air duct 114 in the first air duct assembly 112 effectively utilizes the space in the freezer liner 101 and avoids adding an independent air duct for the temperature-changing compartment 106 separately. The arrangement of the damper assembly 117 between the two inner tanks also subtly solves the problem that the damper occupies a large installation space, and improves the compactness of the air-cooled refrigerator 100 as a whole.

Further, in the air-cooled refrigerator 100 of the present embodiment, the foam carrier 130 is used as the basis for installing the damper assembly 131, which not only facilitates fixing the installation position of the damper assembly 131, but also facilitates the maintenance of the damper assembly 131 at a later stage. Take out the damper assembly 131 directly.

By now, those skilled in the art will recognize that, although various exemplary embodiments of the present invention have been illustrated and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. An air-cooled refrigerator comprising:

a freezing inner container, the interior of which defines a freezing chamber;

the temperature-changing liner is arranged at the lower part of the freezing liner, and a temperature-changing chamber is defined in the temperature-changing liner;

the freezing evaporator is arranged in the freezing inner container and is used for providing cold energy for the freezing chamber and the temperature-changing chamber;

a first air duct assembly which is arranged on the rear wall of the freezing inner container and is internally provided with an air supply duct communicated with the freezing evaporator; and

and the air door assembly is arranged in a foaming layer between the freezing inner container and the variable-temperature inner container, is respectively communicated with the air supply duct and the variable-temperature chamber, and is used for opening or closing the connection between the air supply duct and the variable-temperature chamber.

2. The air-cooled refrigerator of claim 1, wherein the damper assembly comprises:

the air door installation cavity is formed in the foam carrier and is provided with a first installation opening communicated with the air supply duct and a second installation opening communicated with the variable-temperature chamber;

and the air door assembly is arranged in the air door installation cavity and comprises an air door for opening and closing the air supply air channel and the variable-temperature chamber, and an air door motor for driving the air door.

3. The air-cooled refrigerator of claim 2,

the bottom of the freezing inner container is provided with a first air supply outlet connected with the air supply duct;

and an air inlet of the air door assembly is arranged in the vertical projection of the first air supply outlet on the foam carrier.

4. The air-cooled refrigerator of claim 2, wherein the air-cooled refrigerator further comprises:

and the second air duct component is arranged on the rear wall of the temperature-changing liner, and a temperature-changing air duct communicated with the temperature-changing chamber is formed in the second air duct component and used for supplying air to the temperature-changing chamber.

5. The air-cooled refrigerator of claim 4,

the top of the temperature-changing inner container is provided with a second air supply outlet connected with the temperature-changing air channel;

the second mounting port is connected with the second air supply port.

6. The air-cooled refrigerator of claim 2,

and the top and the bottom of the foam carrier are respectively provided with a positioning structure matched with the bottom of the freezing liner and the top of the temperature-changing liner, and the positioning structures are used for fixing the position of the foam carrier in the foaming layer.

7. The air-cooled refrigerator of claim 6,

sealing sponges are respectively adhered to the top surface and the bottom surface of the foam carrier, and mounting holes are respectively formed in the positions, opposite to the first mounting hole and the second mounting hole, of the sealing sponges;

the sealing sponge is matched with the positioning structure to seal gaps between the foam carrier and the bottom of the freezing liner and between the foam carrier and the top of the variable-temperature liner respectively.

8. The air-cooled refrigerator of claim 7,

the sealing sponge is also provided with first sealing rings at the mounting holes at the top and the bottom of the foam carrier respectively;

and gaps between the foam carrier and the bottom of the freezing liner and between the foam carrier and the top of the variable-temperature liner are sealed through the matching of the sealing sponge and the first sealing ring.

9. The air-cooled refrigerator of claim 3, wherein the damper assembly further comprises:

the second sealing ring is arranged in a gap between the air door assembly and the foam carrier;

the third sealing ring is sleeved on the air door motor;

and the fourth sealing ring is arranged at the air inlet of the air door assembly.

10. The air-cooled refrigerator of claim 2,

the foam carrier is also provided with a positioning groove at the bottom, and the foam carrier also comprises a terminal foam cover matched with the positioning groove;

the air door component further comprises a butt joint terminal, and the butt joint terminal is installed in the positioning groove and connected with the air door motor so as to send a driving signal to the air door motor.

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