A defrosting and drainage structure for an air-cooled freezer

Abstract

This utility model provides a defrosting drainage structure for an air-cooled freezer, relating to the field of freezer technology, including a water collection box. The water collection box includes a back shell, a vent plate, a water collection tray, a guide pipe, and a drain pipe. The vent plate is bolted to the front side of the back shell, and the water collection tray is bolted to the lower side of the back shell. The guide pipe is welded to the water collection tray, and the drain pipe is welded to the outer side of the guide pipe. An evaporator is bolted to the front side of the back shell, and an air guide shroud is bolted to the upper side of the evaporator. A fan is installed on the front side of the air guide shroud. By using a water collection tray and a U-shaped heating element, the production process and cost of the water collection box are greatly simplified, avoiding the risk of ice blockage caused by defrosting water accumulating in the water collection tray. This solves the problems of increased production costs and defrosting energy consumption caused by the traditional air-cooled freezer defrosting water collection box using a glued heating wire process, as well as the problem of ice blockage at the drain outlet of the water collection box caused by the easy peeling and detachment of the glued heating wire.

Description

Technical Field

[0001] This utility model belongs to the field of freezer technology, and more specifically, it relates to a defrosting and drainage structure for an air-cooled freezer. Background Technology

[0002] An air-cooled freezer is a type of refrigeration equipment that uses air-cooling technology. Currently, when a freezer is operating, the extremely low temperature of the evaporator causes moisture in the air to condense into frost on its surface, hindering heat exchange between the evaporator and the air inside the freezer, leading to a decrease in refrigeration efficiency. To ensure proper operation, freezers typically perform a defrosting process on the evaporator. Traditional air-cooled freezer evaporator defrosting structures usually include defrosting heating elements, a drip tray at the bottom of the evaporator, and heating wires attached to the bottom of the drip tray. During defrosting, the heating wires and defrosting heating elements work simultaneously, raising the temperature of the drip tray above the freezing point of water droplets, thus preventing the frost layer on the evaporator surface from forming. The melted water droplets fall into the water collection box and are discharged through the drain pipe. However, this traditional structure has a heating wire attached to the bottom of the water collection box. The complicated bonding and wiring process not only increases the production cost of the water collection box, but also increases the energy consumption of the air-cooled freezer during the heating and icing process. In addition, the attached heating wire may come loose from the water collection box due to condensation and other reasons, and the heating wire will lose its heating function. The defrost water in the water collection box will freeze due to the low temperature, and the drain outlet of the water collection box will be blocked by ice, which will prevent the defrost water in the water collection box from draining quickly. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a defrosting drainage structure for an air-cooled freezer, which solves the problems of increased production costs and defrosting energy consumption caused by the traditional air-cooled freezer defrosting water collection box using a process of adhesive heating wire, as well as the problem of ice blockage at the drain outlet of the collection box caused by the easy peeling and detachment of the adhesive part of the heating wire.

[0004] This utility model provides a defrosting and drainage structure for an air-cooled freezer, including an evaporator; a U-shaped electric heating tube is installed on the lower side of the evaporator; and a water collection box is also included; the water collection box includes a back shell, a vent plate, a water collection tray, a guide pipe, and a drain pipe; the vent plate is bolted to the front side of the back shell, the water collection tray is bolted to the lower side of the back shell, a through hole is provided at the center of the lower side of the water collection tray, a guide pipe is welded into the through hole of the water collection tray, and a drain pipe is welded to the outer side of the guide pipe near the rear end; the evaporator is bolted to the front side of the back shell, an air guide shroud is bolted to the upper side of the evaporator, and a fan is installed on the front side of the air guide shroud.

[0005] Furthermore, the front side of the ventilation plate is provided with thirty sets of rectangular through slots that run from front to back, with five sets of rectangular through slots arranged at equal intervals from top to bottom. The ventilation plate and the fin structure of the evaporator are opposite each other.

[0006] Furthermore, the water receiving tray is a box structure with an opening on the upper side, with the water receiving tray and the U-shaped electric heating tube facing each other vertically. The overall color of the water receiving tray is dark black, and the bottom of the box structure of the water receiving tray is a sloped structure that slopes backward.

[0007] Furthermore, the back shell has a U-shaped structure, and the rear side of the U-shaped structure of the back shell has two sets of circular through holes that run from front to back near the right end, and the rear side of the back shell has a through hole that runs from front to back near the left end.

[0008] Furthermore, the air guide shroud is a rectangular groove structure with an opening on the lower side. The groove opening on the lower side of the rectangular groove structure of the air guide shroud is vertically opposite to the evaporator. The upper side of the air guide shroud is a forward-sloping structure. Two sets of circular through holes are provided on the sloping structure of the air guide shroud. A fan is installed on the front side of each set of circular through holes.

[0009] Furthermore, the guide pipe has an L-shaped bend structure, and the L-shaped bend structure of the guide pipe is inclined backward.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. In this utility model, on the one hand, by designing the water receiving tray to be dark black, and utilizing the arrangement of the water receiving tray and the U-shaped electric heating tube facing each other, the water receiving tray is heated by the principle of blackbody absorption of heat radiation. There is no need to attach heating wires, which eliminates the need for purchasing, attaching and wiring heating wires, greatly simplifying the production process. There is no risk of heating wire components coming off, reducing the production cost of the water receiving box and reducing the consumption of refrigeration energy. On the other hand, the sloping design of the water receiving tray ensures smooth drainage of defrost water and avoids the risk of ice blockage caused by defrost water accumulating in the water receiving tray. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a front view structural diagram of this utility model.

[0014] Figure 3 This is a schematic diagram of the rear side view of this utility model.

[0015] Figure 4 This is a schematic diagram of the right-side cross-sectional structure of this utility model.

[0016] Figure 5 This is a cross-sectional structural diagram of the present invention.

[0017] Figure 6 This is an exploded structural diagram of the present invention.

[0018] Figure 7 This is a schematic diagram of the water receiving box structure of this utility model.

[0019] Figure 8 This is a side view of the water receiving box structure of this utility model.

[0020] Figure 9 This is a front view structural diagram of the water receiving box of this utility model.

[0021] Figure label:

[0022] 1. Fan;

[0023] 2. Water receiving box; 201. Back cover; 202. Ventilation panel; 203. Water receiving tray; 204. Drainage pipe; 205. Drain pipe;

[0024] 3. Air guide cover;

[0025] 4. Evaporator;

[0026] 5. U-shaped heating element. Detailed Implementation

[0027] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0028] like Figures 1-9 As shown, this utility model provides a defrosting and drainage structure for an air-cooled freezer, including an evaporator 4; a U-shaped electric heating tube 5 is installed on the lower side of the evaporator 4; and a water collection box 2; the water collection box 2 includes a back shell 201, a vent plate 202, a water collection tray 203, a guide pipe 204, and a drain pipe 205; the vent plate 202 is bolted to the front side of the back shell 201, and the water collection tray 203 is bolted to the lower side of the back shell 201; a through hole is provided at the center of the lower side of the water collection tray 203; a guide pipe 204 is welded into the through hole of the water collection tray 203; a drain pipe 205 is welded to the outer side of the guide pipe 204 near the rear end; the evaporator 4 is bolted to the front side of the back shell 201; an air guide shroud 3 is bolted to the upper side of the evaporator 4; and a fan 1 is installed on the front side of the air guide shroud 3.

[0029] In this embodiment of the utility model, the front side of the ventilation plate 202 near the bottom is provided with thirty sets of rectangular through slots that run from front to back. Five sets of rectangular through slots are arranged at equal intervals from top to bottom. The ventilation plate 202 and the fin structure of the evaporator 4 are opposite each other. By utilizing the dense and regular layout of the through slots of the ventilation plate 202, the circulation area of ​​cold air is greatly increased, allowing the cold air emitted by the evaporator 4 to pass through the ventilation plate 202 more efficiently and diffuse into the interior of the freezer. This makes the cold air blown into the freezer more evenly distributed and enhances the constant temperature cooling capacity of the freezer.

[0030] In this embodiment of the utility model, the water receiving tray 203 is a box structure with an opening on the upper side. The water receiving tray 203 and the U-shaped electric heating tube 5 are opposite each other. The overall color of the water receiving tray 203 is dark black. The bottom of the box structure of the water receiving tray 203 is a sloped structure that slopes backward. When the defrosting water dripping from the evaporator 4 falls on the sloped structure of the water receiving tray 203, the dark black water receiving tray 203 utilizes the principle of black body absorption of heat radiation to simultaneously heat the water receiving tray 203 while the U-shaped electric heating tube 5 is heating the evaporator 4. The surface temperature of the water receiving tray 203 rises rapidly, exceeding the freezing point of the water dripping from the evaporator 4. This causes the defrosting water to flow rapidly backward along the sloped structure of the water receiving tray 203 under gravity to the through hole of the water receiving tray 203 and drain into the guide pipe 204. This prevents the defrosting water from accumulating inside the water receiving tray 203, which would cause the defrosting water to remain on a large area at the bottom of the box after cooling, forming ice blockage.

[0031] In this embodiment of the utility model, the back shell 201 has a U-shaped structure. The rear side of the U-shaped structure of the back shell 201 has two sets of circular through holes that run from front to back, and the rear side of the back shell 201 has a through hole that runs from front to back, near the left end. The three sets of circular through holes of the back shell 201 are respectively opposite to the terminal of the fan 1, the pipe interface of the evaporator 4, and the terminal of the U-shaped electric heating tube 5. The three sets of circular through holes on the rear side of the back shell 201 provide convenient channels for the lead-out or connection of the lines of the fan 1, the pipe of the evaporator 4, and the U-shaped electric heating tube 5, making the connection of the pipes and lines smoother, avoiding pipe bending and line pulling caused by limited installation space, and making the layout of wiring and connection space more reasonable.

[0032] In this embodiment of the utility model, the air guide shroud 3 is a rectangular groove structure with an opening on the lower side. The groove opening on the lower side of the rectangular groove structure of the air guide shroud 3 is vertically opposite to the evaporator 4. The upper side of the air guide shroud 3 is a forward-sloping structure. Two sets of circular through holes are provided on the slope structure of the air guide shroud 3. A fan 1 is installed on the front side of each set of circular through holes. The fan 1 blows the water-containing air in the freezer into the inner side of the air guide shroud 3 through the circular through holes of the air guide shroud 3. The water-containing air is vertically concentrated and blown towards the fin structure of the evaporator 4 along the groove structure of the air guide shroud 3, which accelerates the cold air circulation speed from the freezer to the evaporator 4, allowing the freezer to quickly reach the set temperature and avoiding the loss of cooling efficiency caused by airflow dispersion.

[0033] In this embodiment of the utility model, the guide pipe 204 is an L-shaped bend structure. The L-shaped bend structure of the guide pipe 204 is tilted backward, which makes it easy for the defrosting water flowing into the guide pipe 204 from the water receiving tray 203 to flow quickly into the drain pipe 205 by gravity, thus avoiding the defrosting water from accumulating in the guide pipe 204 and forming ice blockage.

[0034] Specific usage and function of this utility model embodiment:

[0035] In this invention, during the defrosting and drainage process of the evaporator, the external freezer control unit controls the U-shaped heating element 5 to generate heat. Since the U-shaped heating element 5 is located at the bottom of the evaporator 4, it heats the finned structure of the evaporator 4, causing the frost between the multiple sets of fins to melt into water. The defrost water then falls onto the inclined surface of the drip tray 203 under gravity. During the heating process of the evaporator 4 by the U-shaped heating element 5, the water flows between the U-shaped heating element 5 and the drip tray 203... On the other hand, the drip tray 203 is made of dark black material. The drip tray 203 absorbs the heat emitted by the U-shaped heating tube 5 through the blackbody heat absorption principle. The drip tray 203 itself heats up. The temperature of the drip tray 203 is higher than the freezing point of the dripping water in the evaporator. At this time, the defrosting water, in liquid form, flows backward along the inclined surface of the drip tray 203 into the guide pipe 204 by gravity. Then, the defrosting water flows quickly into the drain pipe 205 along the backward inclined guide pipe 204, thus completing the defrosting and draining work of the evaporator.

[0036] All the above components are installed, connected, or set up using common mechanical methods, such as welding, threaded connections, and screw connections. Furthermore, the specific structure, model, and coefficient indicators of all components are based on their own technologies; any method that achieves the desired effect can be implemented. The fan 1, evaporator 4, and U-shaped heating element 5 mentioned above are all common commercially available components. When purchasing and using them, simply connect them according to the instruction manual purchased with the product; therefore, further details are omitted here.

[0037] The technical solution of this utility model is not limited to the scope of the embodiments of this utility model. All technical contents not described in detail in this utility model are known technologies.

Claims

1. A defrosting and draining structure of an air-cooled freezer, comprising an evaporator (4); a U-shaped electric heating tube (5) is installed on the lower side of the evaporator (4); characterized in that: It also includes a water receiving box (2); the water receiving box (2) includes a back shell (201), a ventilation plate (202), a water receiving tray (203), a guide pipe (204) and a drain pipe (205); the front side of the back shell (201) is connected to the ventilation plate (202) by bolts, the lower side of the back shell (201) is connected to the water receiving tray (203) by bolts, the center of the lower side of the water receiving tray (203) is provided with a through hole, the guide pipe (204) is welded in the through hole of the water receiving tray (203), the drain pipe (205) is welded on the outer side of the guide pipe (204) near the rear end, the front side of the back shell (201) is connected to the evaporator (4) by bolts, the upper side of the evaporator (4) is connected to the air guide shroud (3) by bolts, and the front side of the air guide shroud (3) is equipped with a fan (1).

2. The defrosting and draining structure of the air-cooled freezer according to claim 1, characterized in that: The front side of the ventilation plate (202) near the bottom is provided with thirty sets of rectangular through slots that run from front to back. Five sets of rectangular through slots are arranged at equal intervals from top to bottom. The ventilation plate (202) and the fin structure of the evaporator (4) are opposite each other.

3. The defrosting and draining structure of the air-cooled freezer according to claim 1, characterized in that: The water receiving tray (203) is a box structure with an opening on the upper side. The water receiving tray (203) and the U-shaped electric heating tube (5) are opposite each other. The overall color of the water receiving tray (203) is dark black. The bottom of the box structure of the water receiving tray (203) is a sloped structure that slopes backward.

4. The defrosting and draining structure of the air-cooled freezer according to claim 1, characterized in that: The back shell (201) has a U-shaped structure. The rear side of the U-shaped structure of the back shell (201) near the right end has two sets of circular through holes that run from front to back. The rear side of the back shell (201) near the left end has a through hole that runs from front to back.

5. The defrosting and draining structure of the air-cooled freezer according to claim 1, wherein: The air guide shroud (3) is a rectangular groove structure with an opening on the lower side. The groove on the lower side of the rectangular groove structure of the air guide shroud (3) is opposite to the evaporator (4). The upper side of the air guide shroud (3) is a slope structure that is tilted forward. Two sets of circular through holes are provided on the slope structure of the air guide shroud (3). A fan (1) is installed on the front side of each set of circular through holes.

6. The defrosting and draining structure of the air-cooled freezer according to claim 1, characterized in that: The guide pipe (204) has an L-shaped bend structure, and the L-shaped bend structure of the guide pipe (204) is inclined backward.

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