Refrigeration equipment

Abstract

The utility model discloses refrigeration equipment which comprises a box body, a door body, an air duct module, a fan and an evaporator, and a refrigeration cavity is formed in the box body; the air duct module comprises a shell installed in the refrigeration cavity, an air supply cavity and a first air return cavity are formed in the shell, a fan and an evaporator are arranged in the air supply cavity, a heating piece is arranged on the side wall of the side, away from the air supply cavity, of the first air return cavity, and one end of the heating piece is connected into the press bin.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of refrigeration equipment, and particularly relates to a refrigeration equipment. BACKGROUND

[0002] In recent years, more and more users choose to place the refrigeration equipment in the dining room. The vertical middle system refrigeration equipment is thinner in thickness, more space-saving, and meets the user's use demand. However, the cold storage return air pipe of the vertical middle system will produce frost phenomenon in the pipe due to the large temperature difference between the cold storage room and the return air pipe, which affects the return air. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a refrigeration equipment, which effectively improves the defrosting efficiency and prevents frost from affecting the return air effect of the return air pipe.

[0004] In a first aspect, the present application provides a refrigeration equipment, comprising:

[0005] A cabinet and a door body, the cabinet is provided with a refrigeration cavity and a compressor chamber which are spaced apart;

[0006] An air duct module, comprising a shell mounted in the refrigeration cavity, the shell is provided with a supply air cavity and a first return air cavity, a side wall of the first return air cavity away from the supply air cavity is provided with a heating element, and one end of the heating element is connected to the compressor chamber;

[0007] A fan and an evaporator are arranged in the supply air cavity.

[0008] According to the refrigeration equipment of the present application, the heating element is arranged on the side wall of the first return air cavity away from the supply air cavity, so that the side wall of the first return air cavity is heated during defrosting, thereby rapidly defrosting the first return air cavity, improving the defrosting efficiency, directly connecting the heating element to the compressor chamber, improving the reliability of system connection, simplifying the circuit design and wiring, and improving the reliability of the system and the stability of signal transmission.

[0009] According to one embodiment of the present application, at least part of the heating element is arranged on the outer side wall of the first return air cavity away from the supply air cavity.

[0010] According to one embodiment of the present application, the first return air cavity extends in the height direction, the lower end of the supply air cavity communicates with the lower end of the first return air cavity, and the heating element is arranged in the upper part of the first return air cavity.

[0011] According to one embodiment of the present application, the heating element comprises:

[0012] A heating wire is arranged on the outer side wall of the first return air cavity away from the supply air cavity;

[0013] A connecting line is connected to one end of the heating wire;

[0014] The terminal is connected with the other end of the connecting wire and used for connecting with the device in the press chamber.

[0015] According to one embodiment of the present application, the bottom of the shell is provided with a wire hole communicated with the press chamber, and the connecting wire penetrates through the wire hole.

[0016] According to one embodiment of the present application, the side of the first return air cavity away from the air supply cavity is provided with a heat preservation cavity, the heating wire is arranged in the heat preservation cavity, the lower end of the shell is provided with a containing cavity communicated with the heat preservation cavity, at least part of the connecting wire is contained in the containing cavity, the side wall of the containing cavity is provided with a wire hole, and the terminal is arranged outside the containing cavity.

[0017] According to one embodiment of the present application, the shell is provided with a containing groove outside the containing cavity, and the containing groove is communicated with the containing cavity through the wire hole.

[0018] According to one embodiment of the present application, the air duct module of the refrigeration equipment further comprises:

[0019] The heater is arranged on the lower side of the air supply cavity and at least partially extends to the lower side of the first return air cavity.

[0020] According to one embodiment of the present application, the heating member is synchronously switched with the heater.

[0021] According to one embodiment of the present application, the upper end of the first return air cavity is provided with a first return air opening, and the side of the upper end of the first return air cavity close to the air supply cavity is provided with a first heat preservation member.

[0022] According to one embodiment of the present application, the thickness W of the refrigeration equipment in the depth direction of the refrigeration cavity satisfies:

[0023] 450mm≤W≤600mm; and / or,

[0024] The thickness S of the door body satisfies:

[0025] 25mm≤S≤40mm.

[0026] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0028] Figure 1 is a partial structure schematic view of the refrigeration equipment provided by the embodiment of the present application;

[0029] Figure 2 is Figure 1 the sectional view at A-A in FIG. 1.

[0030] Figure 3 is a partial cross-sectional structural schematic diagram of a refrigeration equipment provided by an embodiment of the present application;

[0031] Figure 4 is a partial structural schematic diagram of an air duct module provided by an embodiment of the present application;

[0032] Figure 5 is a cross-sectional structural schematic diagram of an air duct module provided by an embodiment of the present application.

[0033] Reference signs:

[0034] 1000, refrigeration equipment;

[0035] 100, cabinet; 110, inner container; 101, first refrigeration cavity; 102, second refrigeration cavity; 120, compressor compartment; 300, door body;

[0036] 200, air duct module; 210, shell; 211, air supply cavity; 212, first return air cavity; 213, second return air cavity; 214, heat preservation cavity; 215, containing cavity; 216, wiring hole; 217, containing groove; 218, baffle; 220, heating element; 221, heating wire; 222, connecting wire; 223, wiring terminal; 230, heater; 231, heating section; 240, first heat preservation element; 250, evaporator; 260, fan. DETAILED DESCRIPTION

[0037] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation to the present application.

[0038] The following refers to Figures 1-5 The refrigeration equipment and the air duct module according to the embodiments of the present application are described.

[0039] Please refer to Figure 1 The refrigeration equipment 1000 provided by the embodiments of the present application includes a cabinet 100, a door body 300 and an air duct module 200.

[0040] The refrigeration equipment 1000 provided by the embodiments of the present application can be a side cabinet, a refrigerator, a freezer or a wine cabinet, etc., which is not specifically limited.

[0041] The cabinet 100 is internally provided with a refrigeration cavity and a compressor compartment 120 which are arranged at intervals.

[0042] The box body 100 comprises an outer shell, an inner container 110 is arranged in the outer shell, a heat preservation layer is arranged between the outer shell and the inner container 110, the outer shell can be made of metal (such as steel plate), the surface is treated by paint spraying to prevent rust, and has certain aesthetic appearance. The heat preservation layer is located between the inner side of the outer shell and the inner container 110, can be polyurethane foam, has good heat insulation performance, can effectively prevent heat exchange between the inside and outside, and keep the internal temperature stable. The inner container 110 is a part directly contacting the storage objects, generally can be made of ABS plastic or stainless steel material, requires non-toxic and easy to clean, and the inside of the inner container 110 forms a refrigeration cavity for accommodating the storage objects.

[0043] A drawer can be arranged in the refrigeration cavity, the drawer is slidably installed in the refrigeration cavity, and the drawer helps the user to store different types of storage objects separately, thereby improving the use convenience; independent temperature control can be arranged for different drawers to meet the best storage temperature of different foods; the drawer is generally detachable, the user can easily take out and clean, and the hygiene of the inside of the refrigerator is maintained; the drawer is also convenient for setting multiple function partitions, such as an egg shelf and a seasoning box, to facilitate the user to store various small objects.

[0044] The refrigeration cavity can comprise a refrigeration chamber and a freezing chamber, or only one of the refrigeration chamber and the freezing chamber, the temperatures of different chambers are different, the functions are different, and the different temperature ranges of the refrigeration chamber and the freezing chamber can be adjusted by a temperature control device arranged in the box body 100 or outside.

[0045] Please refer to Figure 1 According to some embodiments of the present application, the refrigeration cavity can comprise a first refrigeration cavity 101 and a second refrigeration cavity 102 distributed along the height direction, the first refrigeration cavity 101 is arranged on the upper side of the second refrigeration cavity 102, and the air duct module 200 is arranged in the second refrigeration cavity 102.

[0046] Taking the refrigeration equipment 1000 as a vertical centering system side cabinet as an example, the refrigeration cavity can comprise a first refrigeration cavity 101 arranged on the upper side and a second refrigeration cavity 102 arranged on the lower side, and the first refrigeration cavity 101 and the second refrigeration cavity 102 can realize storage partitioning of multiple temperatures. According to the conventional design of the refrigeration equipment 1000, the first refrigeration cavity 101 can be a refrigeration chamber, the temperature is relatively high, and is used for storing storage objects that need to be refrigerated and fresh-kept, and the second refrigeration cavity 102 can be a freezing chamber, the temperature is relatively low, and is used for storing storage objects that need to be frozen and stored for a long time. By arranging the air duct module 200 in the second refrigeration cavity 102, the cold air circulation path between the air duct module 200 and the second refrigeration cavity 102 is shorter, the cold air circulation path between the air duct module 200 and the first refrigeration cavity 101 is longer, and temperature division is facilitated.

[0047] The door body 300 also comprises a three-layer structure of an outer shell, thermal insulation material and inner lining, to ensure good sealing and thermal insulation effect. The door body 300 can be connected to the box body 100 through a hinge structure, allowing the door to open and close freely. The door body 300 can be a single-door or a double-door, and the single-door can also have the function of adjusting the opening direction left and right. A sealing strip can be installed at the edge of the door body 300, which tightly fits with the box body 100 to prevent cold air leakage, and cooperates with the box body 100 to seal the refrigeration cavity.

[0048] The compressor compartment 120 is arranged outside the inner container 110 and is used to accommodate the compressor, condenser, main control board and other related components. The compressor compartment 120 is designed with a ventilation hole or a fan to ensure that the heat generated by the compressor during operation can be effectively dissipated, avoiding overheating damage. At the same time, the compressor compartment 120 isolates the compressor from other condensing components, reduces heat transfer to the inside of the refrigerator, improves refrigeration efficiency, and also improves electrical safety to prevent electric shock accidents. Specifically, because the compressor and other devices are heavy, the compressor compartment 120 is arranged at the bottom of the box body 100 to reduce the center of gravity of the refrigeration equipment 1000, improve the stability of placement, and also reduce the impact of compressor vibration.

[0049] Please refer to Figure 2 and Figure 3 , the application also provides a air duct module 200, the air duct module 200 includes shell 210, fan 260, evaporator 250 and heating piece 220.

[0050] The air duct module 200 includes a shell 210 installed in the refrigeration cavity, the shell 210 is provided with a supply air cavity 211 and a first return air cavity 212, the fan 260 and the evaporator 250 are arranged in the supply air cavity 211, and the heating piece 220 is arranged on the side wall of the side of the first return air cavity 212 away from the supply air cavity 211. One end of the heating piece 220 is connected to the compressor compartment 120.

[0051] The shell 210 can be made of metal material to have good mechanical strength and corrosion resistance, or can be made of composite material, which has good corrosion resistance, light weight and good thermal insulation, not only can reduce the weight of the entire air duct module 200, but also can improve the thermal insulation effect and reduce energy consumption. The fan 260 is used to drive the circulation of cold air in the refrigeration cavity and the shell 210, improving the refrigeration efficiency, and the evaporator 250 is used to absorb heat to achieve the refrigeration effect. The fan 260 and the evaporator 250 can be fixed in the shell 210 through a support to ensure their stability and reliability.

[0052] The shell 210 is provided with a supply air cavity 211 and a first return air cavity 212, the fan 260 and the evaporator 250 are arranged in the supply air cavity 211, the supply air cavity 211 is communicated with the refrigeration cavity to supply cold air to the refrigeration cavity, the first return air cavity 212 is also communicated with the refrigeration cavity to return the hot air in the refrigeration cavity, the supply air cavity 211 and the first return air cavity 212 are at least partially separated to avoid the air flow in the supply air cavity 211 and the first return air cavity 212 affecting each other, and the supply air cavity 211 and the first return air cavity 212 are communicated with each other, so that the hot air in the first return air cavity 212 can enter the supply air cavity 211 to exchange heat with the evaporator 250, and then be output to the refrigeration cavity by the driving of the fan 260.

[0053] The first return air cavity 212 can be communicated with the first refrigeration cavity 101 to serve as a return air duct of the first refrigeration cavity 101, or can be communicated with the second refrigeration cavity 102 to serve as a return air duct of the second refrigeration cavity 102. It can be understood that because the cold source of the air duct module 200 is arranged in the supply air cavity 211, there is a temperature difference between the air recovered to the first return air cavity 212 and the supply air cavity 211, and there is a probability of frosting, especially when the first return air cavity 212 is communicated with the first refrigeration cavity 101, that is, the first return air cavity 212 is communicated with the refrigeration chamber, the temperature in the refrigeration chamber is relatively high, and the probability of frosting in the first return air cavity 212 is greatly increased.

[0054] The heating element 220 is arranged on the side wall of the first return air cavity 212 away from the supply air cavity 211, so that when the system defrosts, the heating element 220 is turned on to heat and defrost the side wall of the first return air cavity 212 away from the supply air cavity 211, improve the defrosting efficiency and effect of the first return air cavity 212, reduce the influence of frosting on the return air efficiency of the first return air cavity 212, and improve the return air stability.

[0055] One end of the heating element 220 is connected to the press compartment 120, specifically, one end of the heating element 220 can be directly connected to the main control board in the press compartment 120. Because the heating element 220 is arranged on the side of the first return air cavity 212 away from the supply air cavity 211, it can be understood that the devices in the air duct module 200 are generally arranged in the supply air cavity 211, and connecting the heating element 220 with the connector arranged in the air duct module 200 not only complicates the wiring, but also increases the production and design cost and affects the transmission efficiency. By directly connecting the heating element 220 to the press compartment 120, the complexity of the line connection is greatly simplified, the signal transmission path is shortened, the heating element 220 is directly controlled by the main control board to work, the transmission efficiency is improved, the connection stability is improved, and the use stability of the whole system is further improved.

[0056] According to the refrigeration equipment 1000 provided by the embodiment of the present application, the heating element 220 is arranged on the side of the first return air cavity 212 away from the air supply cavity 211, so that the side wall of the first return air cavity 212 is heated during defrosting, thereby quickly defrosting the first return air cavity 212, improving the defrosting efficiency, and directly connecting the heating element 220 to the compressor compartment 120, thereby improving the reliability of system connection, simplifying the circuit design and wiring, and improving the reliability of the system and the stability of signal transmission.

[0057] Please refer to Figure 3 According to some embodiments of the present application, at least part of the heating element 220 can be arranged on the outer side wall of the first return air cavity 212 away from the air supply cavity 211.

[0058] At least part of the heating element 220 is arranged on the outer side wall of the first return air cavity 212 to ensure the heating effect on the first return air cavity 212. By arranging the heating element 220 on the outer side wall of the first return air cavity 212, the heating element 220 can be prevented from directly contacting the air or moisture in the return air cavity, thereby reducing the risk of short circuit and electric shock. There may be moisture and corrosive substances in the interior of the first return air cavity 212, and arranging the heating element 220 on the outside can reduce the corrosion of these substances on the heating element 220, thereby prolonging the service life of the heating element 220. The heating element 220 is on the outside and is not directly impacted by the airflow in the pipe, thereby reducing mechanical wear and improving the durability of the heating element 220. At the same time, the influence of the heating element 220 on the return air flow is also reduced. In addition, the heating element 220 is on the outside, which is more convenient for design and installation, reduces complex internal wiring and fixing devices, and if replacement or maintenance is required, the heating element 220 can be directly operated without the need to disassemble the return air pipe, thereby simplifying the maintenance process.

[0059] Please refer to Figure 2 and Figure 3 According to some embodiments of the present application, the first return air cavity 212 can extend in the height direction, the lower end of the air supply cavity 211 can be in communication with the lower end of the first return air cavity 212, and the heating element 220 is arranged on the upper part of the first return air cavity 212.

[0060] With the first return air cavity 212 in communication with the first refrigeration cavity 101 as an example, because of the principle of cold air sinking, the return air inlet of a single refrigeration cavity is generally arranged on the lower side of the refrigeration cavity, that is, the return air inlet of the first refrigeration cavity 101 is generally arranged on the lower side of the first return air cavity 212, and the return air inlet of the second refrigeration cavity 102 is also arranged on the lower side of the second refrigeration cavity 102. Because the air duct module 200 is arranged in the second refrigeration cavity 102, so that the first return air cavity 212 is located on the lower side of the first refrigeration cavity 101, when the first return air cavity 212 is the return air pipe of the first refrigeration cavity 101, the first return air cavity 212 needs to extend along the height direction, and the upper end thereof is in communication with the first refrigeration cavity 101, and the lower end thereof is in communication with the supply air cavity 211, so that the hot air in the first refrigeration cavity 101 and the hot air entering through the return air inlet at the lower part of the second refrigeration cavity 102 can enter the supply air cavity 211 through the lower part of the supply air cavity 211 together.

[0061] Therefore, when the hot air in the first refrigeration cavity 101 enters the first return air cavity 212 through the upper end of the first return air cavity 212, the temperature difference between the upper part of the first return air cavity 212 and the second refrigeration cavity 102 is the largest, and the risk of frosting is the highest. By arranging the heating element 220 on the upper part of the first return air cavity 212, the defrosting effect of the first return air cavity 212 is improved.

[0062] Please refer to Figure 3 and Figure 4 According to some embodiments of the present application, the heating element 220 can include a heating wire 221, a connecting wire 222 and a terminal 223.

[0063] The heating wire 221 is arranged on the outer side wall of the first return air cavity 212 away from the supply air cavity 211; one end of the connecting wire 222 is connected with the heating wire 221; and the terminal 223 is connected with the other end of the connecting wire 222 and is used for being connected with devices in the press compartment 120.

[0064] The heating wire 221 is used for generating heat required for defrosting. By arranging the heating wire 221 on the outer side wall of the first return air cavity 212, the first return air cavity 212 is heated and defrosted. The heating wire 221 can extend along the length direction of the first return air cavity 212 to improve the coverage of the heating wire 221 and improve the defrosting area and defrosting effect. Exemplarily, the heating wire 221 can be fixed on the outer side wall of the first return air cavity 212 by bonding.

[0065] One end of the connecting wire 222 is connected with the heating wire 221, and the other end thereof is connected with the terminal 223, which is used for connecting the heating wire 221 with a power supply or other control devices and transmitting electrical signals.

[0066] The wiring terminal 223 can be arranged in the pressurized chamber 120 to directly connect with the main control board in the pressurized chamber 120, to ensure the stability of the connection between the heating element 220 and the main control board, and the main control board can deliver the control signal and power to the heating wire 221 through the wiring terminal 223 and the connecting wire 222.

[0067] Referring to Figure 3 and Figure 4 According to some embodiments of the present application, the bottom of the shell 210 can be provided with a wiring hole 216 in communication with the pressurized chamber 120, and the connecting wire 222 can pass through the wiring hole 216.

[0068] Because the shell 210 is arranged in the inner container 110, the pressurized chamber 120 is arranged outside the inner container 110, and the heating wire 221 is installed on the shell 210, the heating wire 221 is opposite to the pressurized chamber 120. In addition, the pressurized chamber 120 is arranged at the bottom of the cabinet 100, the wiring hole 216 is arranged at the bottom of the shell 210 to facilitate the connecting wire 222 to extend out of the shell 210 and the inner container 110, and the connecting wire 222 passes through the wiring hole 216 into the pressurized chamber 120, so that the heating wire 221 can be directly connected with the main control board in the pressurized chamber 120, and the wiring difficulty is simplified.

[0069] Referring to Figure 2 、 Figure 3 and Figure 4 According to some embodiments of the present application, the side of the first return air cavity 212 away from the air supply cavity 211 can be provided with a heat preservation cavity 214, the heating wire 221 can be arranged in the heat preservation cavity 214, the lower end of the shell 210 can be provided with a containing cavity 215 in communication with the heat preservation cavity 214, at least part of the connecting wire 222 is contained in the containing cavity 215, the side wall of the containing cavity 215 is provided with the wiring hole 216, and the wiring terminal 223 is arranged outside the containing cavity 215.

[0070] Because it is a vertical centering system, the air duct module 200 is arranged along the depth direction of the refrigeration cavity, thereby reducing the occupation in the thickness direction of the refrigeration equipment 1000 and reducing the overall thickness of the refrigeration equipment 1000. Therefore, in order to reduce the thickness of the air duct module 200 and reduce the occupation of the internal space of the refrigeration cavity, the air supply cavity 211 and the return air cavity are also distributed along the depth direction of the refrigeration cavity.

[0071] Specifically, the first return air cavity 212 extends in the height direction and is arranged at one side of the air supply cavity 211 close to the door body 300. Taking the side of the refrigeration equipment 1000 provided with the door body 300 as the front side as an example, the first return air cavity 212 is arranged at the front side of the air supply cavity 211. Because the temperature in the first return air cavity 212 is lower than the temperature outside the refrigeration equipment 1000, in order to reduce the risk of condensation on the front side of the air duct module 200, the side of the first return air cavity 212 away from the air supply cavity 211, that is, the front side of the first return air cavity 212, can be provided with a heat preservation cavity 214. The heat preservation cavity 214 can be provided with a heat preservation member to isolate the cold quantity of the first return air cavity 212 from being transmitted to the outer surface of the air duct module 200. The heating wire 221 is arranged on the outer surface of the first return air cavity 212 away from the air supply cavity 211, that is, on the inner wall of the return air cavity close to the first return air cavity 212.

[0072] It can be understood that the heat preservation cavity 214 also extends in the height direction. The accommodating cavity 215 in communication with the heat preservation cavity 214 is arranged at the lower end of the shell 210, and the wiring hole 216 is arranged on the accommodating cavity 215, so that the connecting line 222 of the heating wire 221 can extend downward along the inner wall in the heat preservation cavity 214 to the accommodating cavity 215, and then pass out to the outside of the shell 210 through the wiring hole 216 formed in the side wall of the accommodating cavity 215. The wiring terminal 223 is arranged outside the accommodating cavity 215, that is, in the press chamber 120 and connected with the connecting line 222, so as to finally realize the connection between the heating wire 221 and the main control board.

[0073] Referring to Figure 3 and Figure 4 According to some embodiments of the present application, the shell 210 can be provided with the accommodating groove 217 outside the accommodating cavity 215, and the accommodating groove 217 can be in communication with the accommodating cavity 215 through the wiring hole 216.

[0074] The accommodating groove 217 is arranged at a position outside the accommodating cavity 215 of the shell 210, and is used to accommodate the wiring terminal 223. When the air duct module 200 is assembled, the heating member 220 is pre-installed in the air duct module 200, the heating wire 221 is bonded to the inner wall of the heat preservation cavity 214, and the connecting line 222 is accommodated in the accommodating cavity 215 and connected with the wiring terminal 223 pre-installed in the accommodating groove 217. When the air duct module 200 is assembled, the air duct module 200 is first fixed to the inner container 110, the wiring terminal 223 in the accommodating groove 217 and the connecting line 222 in the accommodating cavity 215 are pulled out, and the wiring terminal 223 is inserted into the main control board, thereby greatly improving the assembly efficiency.

[0075] Referring to Figures 2-5 The air duct module 200 provided by the embodiments of the present application further comprises a heater 230. The heater 230 is arranged at the lower side of the air supply cavity 211 and at least partially extends to the lower side of the first return air cavity 212.

[0076] The lower end of the air supply cavity 211 is open to allow the heater 230 to face the interior space of the air supply cavity 211, so that the hot air generated by the heater 230 can heat the evaporator 250 upward when the system is defrosted. By extending at least part of the heater 230 to the lower side of the first return air cavity 212, the hot air generated by the heater 230 facing the first return air cavity 212 can enter the first return air cavity 212 to heat the first return air cavity 212, so that the heater 230 can defrost the air supply cavity 211 and the first return air cavity 212 at the same time, improving the defrosting effect.

[0077] The flow area of the lower end of the first return air cavity 212 increases along the gas flow direction, so that the lower end of the first return air cavity 212 is arranged in a trumpet shape.

[0078] Because the first return air cavity 212 is arranged in a long and narrow shape, the height is high and the defrosting difficulty is large. By arranging the lower end of the first return air cavity 212 in a trumpet shape, more parts of the heater 230 face the lower end of the first return air cavity 212, so that more hot air can enter the first return air cavity 212, improving the defrosting effect of the first return air cavity 212, and improving the use stability of the air duct module 200.

[0079] According to the air duct module 200 provided by the embodiment of the present application, by extending at least part of the heater 230 to the lower side of the first return air cavity 212, and designing the lower side of the first return air cavity 212 in a trumpet shape, the heater 230 can defrost the air supply cavity 211 and the first return air cavity 212 at the same time, improve the defrosting effect of the first return air cavity 212, and ensure the return air efficiency of the refrigeration cavity.

[0080] Please refer to Figure 3 , Figure 4 and Figure 5 According to some embodiments of the present application, the lower end of the side wall of the first return air cavity 212 close to the side of the air supply cavity 211 has a tendency to tilt toward the air supply cavity 211 from top to bottom.

[0081] A baffle 218 extending in the height direction is arranged between the first return air cavity 212 and the air supply cavity 211 to separate the air supply cavity 211 and the first return air cavity 212 from each other. The side wall of the first return air cavity 212 close to the air supply cavity 211 is the side wall of the baffle 218. By arranging the lower end of the baffle 218 to tilt toward the air supply cavity 211 from top to bottom, the lower end of the first return air cavity 212 is gradually increased in a trumpet shape along the gas flow direction (from top to bottom).

[0082] Exemplarily, the lower end of the baffle 218 can be arranged in an arc shape or in a slope plate shape, which is not limited in particular.

[0083] Please refer to Figure 5 According to some embodiments of the present application, the heater 230 comprises a heating pipe, at least part of the heating pipe extends to the lower side of the first return air cavity 212.

[0084] The heater 230 can comprise a heating pipe, which can be an electric heating pipe. The heating pipe can extend along the distribution direction of the air supply cavity 211 and the first return air cavity 212, so that the heating pipe can correspond to the air supply cavity 211 and the first return air cavity 212 respectively. Specifically, the heating pipe is arranged in a meandering shape in the shell 210 to increase the total length of the heating pipe and increase the heating area of the heating pipe, thereby improving the defrosting effect.

[0085] Please refer to Figure 5 According to some embodiments of the present application, the part of the heating pipe extending to the lower side of the first return air cavity 212 has a heating section 231 extending along the height direction.

[0086] Since the air supply cavity 211 and the first return air cavity 212 are distributed along the depth direction of the refrigeration cavity, and the cross-sectional area of the first return air cavity 212 is small, the width of the first return air cavity 212 in the depth direction of the refrigeration cavity is small, so that the length of the heating pipe corresponding to the first return air cavity 212 in the depth direction of the refrigeration cavity is limited. By arranging the heating section 231 extending along the height direction and arranging the heating section 231 at the lower side of the first return air cavity 212, the total length of the part of the heating pipe corresponding to the first return air cavity 212 is increased, thereby improving the defrosting effect on the first return air cavity 212.

[0087] According to some embodiments of the present application, a heat-conducting member can be connected to the heater 230, and the heat-conducting member can extend into the first return air cavity 212.

[0088] Since the height of the first return air cavity 212 is high, the heat loss of the heater 230 is more as the height increases, which has a certain influence on the defrosting effect on the upper end of the first return air cavity 212. By connecting the heat-conducting member to the heater 230, the heat generated by the heater 230 can be transmitted along the heat-conducting member. Exemplarily, the lower end of the heat-conducting member is connected to the heater 230, and the other end extends upward into the first return air cavity 212, so as to transmit the heat of the heater 230 to the upper end of the heat-conducting member. The upper end of the heat-conducting member is closer to the upper end of the first return air cavity 212, thereby improving the defrosting effect on the upper end of the first return air cavity 212.

[0089] Please refer to Figures 2-5According to some embodiments of the present application, the upper end of the first return air cavity 212 can be provided with a first return air opening, and the side of the upper end of the first return air cavity 212 close to the air supply cavity 211 can be provided with a first heat preservation member 240.

[0090] According to the foregoing, the upper end of the first return air cavity 212 is connected with the first refrigeration cavity 101, and the first return air opening of the upper end of the first return air cavity 212 is used for the return air of the first refrigeration cavity 101. Because the temperature in the first refrigeration cavity 101 is higher and the temperature in the second refrigeration cavity 102 is lower, when the air at a higher temperature enters the upper end of the first return air cavity 212, the temperature difference between the hot air and the side wall of the first return air cavity 212 is the largest, and condensation and frosting are most likely to occur.

[0091] By providing the first heat preservation member 240 on the side of the upper end of the first return air cavity 212 close to the air supply cavity 211, the cold energy in the air supply cavity 211 is prevented from being transferred to the upper end of the first return air cavity 212, which reduces the risk of condensation and frosting at the upper end of the first return air cavity 212 and also reduces the frosting height of the first return air cavity 212. When the system is defrosted, the heat generated by the defrosting heater 230 of the refrigeration evaporator 250 can be radiated to complete the defrosting work, which improves the defrosting efficiency and defrosting effect.

[0092] Please refer to Figures 2-5 According to some embodiments of the present application, the side wall of the shell 210 can be provided with a second heat preservation member, and the thickness of the first heat preservation member 240 can be greater than the thickness of the second heat preservation member.

[0093] The temperature in the air supply cavity 211 is low, and the second heat preservation member is arranged on the side wall of the shell 210 to play a heat preservation role on the air supply cavity 211, improve the refrigeration effect, and also prevent condensation. Specifically, in a vertical middle placement system, the shell 210 can be arranged in the middle of the second refrigeration cavity 102 to divide the second refrigeration cavity 102 into a first chamber and a second chamber. The side walls of the shell 210 corresponding to the first chamber and the second chamber are provided with the second heat preservation member to play a heat preservation and heat insulation role.

[0094] It should be noted that the thickness of the first heat preservation member 240 refers to the thickness in the distribution direction of the air supply cavity 211 and the first return air cavity 212, and the thickness of the second heat preservation member refers to the thickness in the distribution direction of the first chamber and the second chamber. By arranging the thickness of the first heat preservation member 240 to be greater than the thickness of the second heat preservation member, the heat insulation performance of the first heat preservation member 240 is ensured.

[0095] In an example, the first heat preservation member 240 can be integrally formed with one of the second heat preservation members, which simplifies the installation process and improves the stability of the first heat preservation member 240.

[0096] Please refer to Figure 3 and Figure 4According to some embodiments of the present application, the outer side wall of the first return air cavity 212 away from the air supply cavity 211 is provided with a heating element 220, and the heater 230 can be synchronously switched with the heating element 220.

[0097] The heater 230 and the heating element 220 are both controlled by the main control board, and the synchronous switch of the heating element 220 and the heater 230 is set to start synchronously when the system defrosts, so as to defrost the air supply cavity 211 and the first return air cavity 212 comprehensively, improve the defrosting efficiency and effect, and stop defrosting after the system defrosts, which is simple to control and low in production and development cost.

[0098] Please refer to Figures 1-5 According to some embodiments of the present application, the refrigeration cavity includes a first refrigeration cavity 101 and a second refrigeration cavity 102 distributed in the height direction, the first refrigeration cavity 101 is arranged on the upper side of the second refrigeration cavity 102, the air duct module 200 is arranged in the second refrigeration cavity 102, the upper end of the first return air cavity 212 is communicated with the first refrigeration cavity 101, the lower side of the air supply cavity 211 and the first return air cavity 212 is provided with a second return air cavity 213, the second return air cavity 213 is communicated with the second refrigeration cavity 102, and the heater 230 is arranged in the second return air cavity 213.

[0099] The second return air cavity 213 is arranged below the air supply cavity 211 and the first return air cavity 212, and the lower end of the air supply cavity 211 and the lower end of the first return air cavity 212 are communicated through the second return air cavity 213, wherein the two sides of the second return air cavity 213 are both provided with a second return air port, and the second return air cavity 213 is communicated with the second refrigeration cavity 102 through the second return air port to return air to the second refrigeration cavity 102. By arranging the heater 230 in the second return air cavity 213, the second return air cavity 213, the air supply cavity 211 and the first return air cavity 212 can be defrosted at the same time, which is simple in structure and good in defrosting effect.

[0100] According to some embodiments of the present application, the thickness W of the refrigeration equipment 1000 in the depth direction of the refrigeration cavity can satisfy: 450mm≤W≤600mm.

[0101] The refrigeration equipment 1000 is thin in thickness and good in appearance, which can better adapt to the indoor decoration of the user and improve the product quality. The thickness W of the refrigeration equipment 1000 in the depth direction of the refrigeration cavity is in the range of [450mm, 600mm], for example, W can be 450mm, 500mm, 550mm, 600mm or other values between 450mm and 600mm, and the specific value is not limited.

[0102] According to some embodiments of the present application, the thickness S of the door body 300 can satisfy: 25mm≤S≤40mm.

[0103] The door body 300 of the refrigeration equipment 1000 is thin, convenient to open, and reduces the influence on the thickness of the entire refrigeration equipment 1000, so that the refrigeration equipment 1000 can be made thinner, so as to better adapt to the indoor decoration of the user and improve the product quality. The thickness S of the door body 300 is in the range of [25mm, 50mm], and for example, S can be 25mm, 30mm, 35mm, 40mm or other values between 25mm and 40mm, and the specific value is not limited.

[0104] The terms "first", "second", and the like in the description and claims of the application are used to distinguish similar objects, and are not used to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually a class, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0105] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0106] In the description of the application, "first feature" and "second feature" can include one or more features.

[0107] In the description of the application, "a plurality of" means two or more.

[0108] In the description of the application, "above" or "below" the first feature of the second feature can include direct contact between the first and second features, or can include indirect contact between the first and second features through another feature therebetween.

[0109] In the description of the application, "above", "above" and "above" of the first feature of the second feature include the first feature directly above and obliquely above the second feature, or only indicate that the first feature is higher than the second feature in height.

[0110] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. Such terminology means that a particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the application. The illustrative appearances of such terminology in various places in the specification does not necessarily refer to the same embodiment or example. Moreover, it is appreciated that the specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0111] Although embodiments of this application have been shown and described, it is to be understood that various modifications, substitutions, combinations, and variations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A refrigeration appliance characterized in that, include: The housing and door, wherein the housing is provided with spaced-apart refrigeration chambers and compressor compartments; The air duct module includes a housing installed inside the refrigeration chamber. The housing has an air supply chamber and a first return air chamber. The air supply chamber has a fan and an evaporator. The side wall of the first return air chamber opposite to the air supply chamber has a heating element. One end of the heating element is connected to the compressor compartment.

2. The refrigeration appliance of claim 1, wherein, At least a portion of the heating element is disposed on the outer wall of the first return air cavity on the side opposite to the supply air cavity.

3. The refrigeration appliance of claim 1, wherein, The first return air cavity extends along the height direction, the lower end of the air supply cavity is connected to the lower end of the first return air cavity, and the heating element is disposed in the upper part of the first return air cavity.

4. The refrigeration appliance of any of claims 1-3, wherein, The heating element includes: A heating wire is disposed on the outer wall of the first return air cavity on the side opposite to the air supply cavity; The connecting wire is connected at one end to the heating wire; A terminal block is connected to the other end of the connecting wire and is used to connect to components inside the press chamber.

5. The refrigeration appliance of claim 4, wherein, The bottom of the housing is provided with a wiring hole that communicates with the press chamber, and the connecting wire passes through the wiring hole.

6. The refrigeration appliance of claim 5, wherein, The first return air cavity has a heat preservation cavity on the side opposite to the air supply cavity. The heating wire is disposed in the heat preservation cavity. The lower end of the housing has a receiving cavity communicating with the heat preservation cavity. At least a portion of the connecting wire is accommodated in the receiving cavity. The side wall of the receiving cavity has the wiring hole. The wiring terminal is disposed outside the receiving cavity.

7. The refrigeration appliance of claim 6, wherein, The housing has a receiving groove outside the receiving cavity, and the receiving groove is connected to the receiving cavity through the wiring hole.

8. The refrigeration appliance of any of claims 1-3, wherein, The air duct module also includes: A heater is disposed on the lower side of the air supply chamber and extends at least partially to the lower side of the first return air chamber.

9. The refrigeration appliance of claim 8, wherein, The heating element switches on and off synchronously with the heater.

10. The refrigeration appliance of any of claims 1-3, wherein, The upper end of the first return air chamber is provided with a first return air inlet, and the upper end of the first return air chamber is provided with a first heat insulation component on the side near the air supply chamber.

11. The refrigeration appliance of any of claims 1-3, wherein, The thickness W of the refrigeration device in the depth direction of the refrigeration cavity satisfies: 450mm≤W≤600mm; and / or, The thickness S of the door body satisfies: 25mm≤S≤40mm.

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