Air box

Abstract

The utility model discloses an air box which comprises a shell provided with an air inlet I, a cavity and an air cavity are arranged in the shell, the cavity is communicated with an external space through the air inlet I, one side of the air cavity is provided with at least one air inlet II communicated with the cavity, a fan is arranged in the air cavity, and an air outlet is arranged at a position, close to the air outlet end of the fan, of the air cavity. According to the refrigerating air box, the flow speed of air in the refrigerating air box is increased through the draught fan, hot air is cooled through the water bag, air staying in the air cavity returns to the cavity through the backflow opening to be refrigerated again, and the refrigerating effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of cooling and heating technology of air boxes, specifically an air box. Background Technology

[0002] The principle of a cooling air box is to use a water bag to absorb the heat of hot air, thereby turning the hot air into cold air and blowing it out. It has been widely used in small refrigeration products such as fans and frozen product storage.

[0003] For example, the Chinese patent document "CN107272854A, a rapid cooling device for a laptop computer" includes a cold air duct and a fan. The cold air duct consists of an ice pack groove at the top of the cold air duct and an air cavity at the bottom of the ice pack groove. The top of the ice pack groove has a first card plate with a hollowed-out center. The first card plate is embedded in the upper surface of the first card plate and engages with the first card plate. The bottom of the ice pack groove has a second card plate. The second card plate is arranged around the inner side of the ice pack groove, and the second card plate and the first card plate are arranged parallel and symmetrical along the width direction of the ice pack groove. The ice pack groove and the air cavity are fixedly connected by the second card plate. The ends of the air cavity are respectively provided with a fan groove and an air outlet. The bottom of the air outlet is provided with a guide pad. A fan is provided inside the fan groove. A locking plate is provided on the inner side of the fan. The fan and the fan groove are engaged by the locking plate.

[0004] Although the above can blow out cold air, the ice packs placed inside will turn into water after long-term use, causing the ice packs to deform and block the air cavity. Utility Model Content

[0005] The purpose of this utility model is to provide a wind box to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A wind box includes an outer shell with an air inlet, a cavity and a wind chamber inside the outer shell, the cavity communicating with the external space through the air inlet, at least one air inlet communicating with the cavity on one side of the wind chamber, a fan installed inside the wind chamber, and an air outlet located near the air outlet end of the fan in the wind chamber, the air outlet being located on the side of the wind chamber away from the cavity.

[0008] Furthermore, a return port connecting the air cavity and the cavity is provided at the air outlet of the fan. The air outlet of the fan and the air outlet of the air cavity are spatially progressively smaller structures.

[0009] Furthermore, the second air inlet is provided with three inlets, and the outer periphery of the second air inlets on both sides is provided with a wind deflector extending into the cavity.

[0010] Furthermore, the outer casing includes a housing, and a top cover is located on the housing, the top cover and the housing enclosing to form a cavity.

[0011] Furthermore, a water bag is provided inside the cavity, and a water-blocking net is wrapped around the water bag.

[0012] Furthermore, the water bag divides the cavity into an upper air duct and a lower air duct.

[0013] Furthermore, at least one of the upper and lower air ducts is provided with a number of spaced strip blocks.

[0014] Furthermore, a mesh bag is installed on the outside of the water bag and the water-blocking net.

[0015] Furthermore, the fan is electrically connected to an external controller, and the fan speed can be adjusted via buttons and a display on the controller.

[0016] Furthermore, the air cavity is provided with an adjustable opening to regulate the temperature.

[0017] The beneficial effects of this utility model are:

[0018] This invention utilizes a starter fan to draw in external air into the cavity through inlet one. The air then travels along the passage formed by the strip-shaped blocks between the shell and the water bag. The water bag cools the hot air, turning it into cold air. The cold air enters the air cavity through inlet two. The start of the fan allows the air to flow within the air cavity and finally blow it out from the outlet. Since the air output from the outlet is lower than the air delivery volume of the fan, the air remaining in the air cavity returns to the cavity through the return port for recooling, thus improving the cooling effect of the hot air.

[0019] By setting an adjustable opening in the air cavity and setting a fan speed control circuit, the temperature and air volume of the outlet air can be adjusted, thereby satisfying the product's adjustability for environmental conditions and user comfort.

[0020] By setting a mesh bag on the outside of the water bag and the water barrier, it is possible to eliminate the impact of ice bag deformation caused by the deformation of the ice bag. Normally, the material of ice bag is plastic film. After the ice melts into water, the ice bag will deform under the action of gravity, which may obstruct the air passage and cause airflow obstruction, thus affecting the heat exchange effect.

[0021] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0022] Figure 1 : Overall structural diagram of this utility model.

[0023] Figure 2 : Exploded view of this utility model.

[0024] Figure 3 : Exploded view of this utility model.

[0025] Figure 4 : A half-sectional side view of this utility model.

[0026] Figure 5 : Upper half-sectional view of this utility model.

[0027] Reference numerals: 1. Outer shell; 2. Cavity; 3. Air cavity; 6. Fan; 7. Water bag; 8. Water baffle; 11. Air inlet one; 12. Shell; 21. Top cover; 23. Strip block; 31. Air inlet two; 51. Air outlet; 52. Return outlet. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Please refer to Figure 1-5 ;

[0030] A cooling box uses a water bag 7 to exchange heat with the hot air inside the cavity 2, turning the hot air into cold air, so that the cooling box can blow out cold air and allow people to feel a comfortable breeze.

[0031] Specifically, it includes an outer shell 1 with an air inlet 11. In this embodiment, it is preferably rectangular. The outer shell 1 contains a cavity 2 and an air chamber 3. A water bag 7, which can be a cold water bag or an ice bag, is installed in the cavity 2. The water bag 7 can exchange heat with the hot air, turning the hot air into cold air, so that the cooling air box can blow out cold air, allowing people to feel a comfortable cool breeze and improving the practicality of the product. The cavity 2 is connected to the external space through the air inlet 11. The air inlet 11 is used to introduce hot air into the cavity 2, and then the water bag 7 cools the hot air. A dustproof net is attached to the air inlet 11 to prevent dust from entering the cavity 2 and clogging it. The air chamber 3 is located on the outer periphery of the cavity 2. At least one air inlet 31 is provided on one side of the air chamber 3, which is connected to the cavity 2. The air chamber 3 and the cavity 2 are connected through the air inlet 31. A fan 6 is installed inside the air chamber 3. The fan 6 is attached to the inner wall of the air cavity 3. The fan 6 is used to enhance the air flow speed and increase the intake and exhaust volume. At the same time, an external controller is provided to control the speed of the fan 6. The external controller is electrically connected to the fan 6 and has a wind speed level adjustment module. The wind speed level adjustment module is used to adjust the speed of the fan 6. By changing the speed of the fan 6, the intake and exhaust volume of the fan 6 are changed, thereby improving the practicality of the product. The air cavity 3 is provided with an air outlet 51 near the air outlet end of the fan 6. The air outlet 51 is located on the side of the air cavity 3 away from the cavity 2. The fan 6 draws outside air into the cavity 2 from the air inlet 11. The water bag 7 cools the hot air into cold air. The cold air enters the air cavity 3 through the air inlet 31. The fan 6 blows the cold air into the air outlet 51, so that the cold air is blown out from the air outlet 51.

[0032] In this embodiment, the air outlet 51 has a lower air volume than the blower 6. It is located at the air outlet end of the blower 6 and is also provided with a return port 52 that connects the air cavity 3 and the cavity 2. Since the air output of the air outlet 51 is lower than the air delivery of the blower 6, some cold air will remain in the air cavity 3. This part of the cold air will return to the cavity 2 through the return port 52 to recool, thereby improving the cooling effect of the hot air.

[0033] Furthermore, the space between the air outlet end of the fan 6 and the air outlet 51 of the air cavity 3 is a gradually decreasing structure. That is, the cross-sectional area of ​​the flow channel at the air outlet end of the fan 6 is significantly larger than the cross-sectional area of ​​the flow channel at the air outlet 51 end of the air cavity 3. This increases the gas pressure blown out by the fan 6, thereby increasing the gas flow rate and improving the air velocity. At the same time, it also ensures that there is sufficient gas flowing back to the cavity 2 at the return port 52.

[0034] In this embodiment, three air inlets 31 are provided, and all three air inlets 31 are located at the lower end of the cavity 2. When air enters from the air inlet 11, it may flow directly to the air inlet 31 along the two sides of the water bag 7 due to the obstruction of the water bag 7. This means that this part of the air flows into the air cavity 3 without undergoing heat exchange through the water bag 7. Therefore, wind deflectors extending into the cavity are provided on the outer periphery of the air inlets 31 on both sides. The wind deflectors extend to a position that is horizontally aligned with the center of the inner cavity. By blocking the air entering from both sides through the wind deflectors, the air must flow through the water bag 7 before it can flow from the wind deflectors to the air inlet 31.

[0035] Furthermore, an adjustable opening is provided at the air inlet of the fan 6 in the air cavity 3. At this time, hot air enters the air cavity directly through the opening and mixes with the original cold air, which can increase the temperature of the outlet air. By adjusting the size of the opening, the air intake of the air inlet 11 is reduced, thereby reducing the heat exchange efficiency of the cold water bag. This allows the user to adjust the temperature according to the ambient temperature and body temperature, or to select based on body temperature and usage time.

[0036] Furthermore, the water bag 7 can also be a hot water bag. When used in winter, the hot water bag can exchange heat with the cold air, thus turning the cold air into hot air, so that the cooling air box can blow out the hot air, and the human body can feel the comfortable hot air. Of course, since the temperature of the hot water bag is easy to drop in winter, the hot water bag can be replaced with an insulated bag.

[0037] In this embodiment, the air cavity 3 has a concave shape, and the cavity 2 is located in the middle of the concave shape.

[0038] In this embodiment, the inner walls of both cavity 2 and air cavity 3 are provided with heat-insulating material to keep the air inside cavity 2 and air cavity 3 warm.

[0039] In this embodiment, the outer shell 1 includes a shell 12, and an upper cover 21 is placed on the shell 12. The upper cover 21 and the shell 12 enclose a cavity 2. The upper cover 21 and the outer shell 1 are sealed by using a sealing ring or sealant. The present invention adopts a folding upper cover 21. When the cooling effect of the cooling air box deteriorates, it indicates that the water bag 7 can no longer cool the hot air. By flipping open the upper cover 21 and replacing the water bag 7, the cooling of the hot air can continue.

[0040] Furthermore, the water bag 7 is wrapped with a water-blocking net 8. When the water bag 7 exchanges heat with hot air, the gaseous water in the outside air will condense on the surface of the water bag. By using the water-blocking net 8, the gas is prevented from directly contacting the water bag, thereby effectively reducing the amount of water condensation.

[0041] Furthermore, the water bag 7 divides the cavity 2 into an upper air duct and a lower air duct. Each upper air duct and the lower air duct is provided with at least one set of several spaced strip blocks 23. The strip blocks 23 can be set alone in the upper air duct, or alone in the lower air duct, or both air ducts can be provided with them. Preferably, the strip blocks 23 can be set at the top and bottom of the shell 12, or at the upper and lower end faces of the water bag. There is no limitation on this. At the same time, the strip blocks 23 can also be arranged in an alternating manner. The strip blocks 23 are used to block the flow of air, increase the time that hot air stays in the shell 12, and further improve the cooling effect.

[0042] Furthermore, a mesh bag is installed on the outside of the water bag and the water barrier. Normally, the ice bag is made of plastic film. After the ice melts into water, the ice bag will deform under the action of gravity, which may obstruct the air passage and cause airflow obstruction, thereby affecting the heat exchange effect. In this example, a rigid breathable mesh is installed on the outer layer of the ice bag to eliminate the impact of the ice bag deformation.

[0043] Furthermore, during the heat exchange between the external hot air and the ice pack, condensation will form on the surface of the ice pack. This condensation can seep out through gaps or materials, causing inconvenience, requiring cleaning, and also carrying away heat from the ice pack, resulting in heat loss. The solution of this invention is to add a fabric of suitable thickness and good thermal conductivity to the outside of the ice pack. This ensures that the outer layer in contact with the air has a higher temperature, making it less prone to large amounts of condensation and objectively increasing the area for air exchange. A small amount of condensation can be absorbed by the fabric, facilitating cleaning. In this example, the material used is a 0.3 mm thick carbon fiber fabric.

[0044] The aforementioned rigid mesh and heat-conducting fabric can form a bag to hold ice packs, or the fabric and rigid mesh can be placed in the air cavity.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A wind box, comprising an outer shell (1) having an air inlet (11), wherein the outer shell (1) has a cavity (2) and an air chamber (3), characterized in that, The cavity (2) is connected to the external space through an air inlet (11). The air cavity (3) has at least one air inlet (31) connected to the cavity (2) on one side. A fan (6) is installed inside the air cavity (3). An air outlet (51) is provided near the air outlet of the fan (6) in the air cavity (3).

2. The wind box according to claim 1, characterized in that, Located at the air outlet of the fan (6), there is also a return port (52) that connects the air cavity (3) and the cavity (2). The air outlet of the fan (6) and the air outlet (51) of the air cavity (3) are spatially smaller structures.

3. A wind box according to claim 1, characterized in that, The outer shell (1) includes a shell (12) and a cover (21) is located on the shell (12) and the cover (21) and the shell (12) enclose to form a cavity (2).

4. A wind box according to claim 3, characterized in that, The cavity (2) is provided with a water bag (7), and the water bag (7) is wrapped with a water-blocking net (8).

5. A wind box according to claim 4, characterized in that, The water bag (7) divides the cavity (2) into an upper air passage and a lower air passage, and at least one of the upper air passage and the lower air passage is provided with a number of spaced strip blocks (23).

6. A wind box according to claim 1, characterized in that, The fan (6) is electrically connected to an external controller, and the speed of the fan (6) can be adjusted by the buttons and display on the controller.

7. A wind box according to claim 1, characterized in that, The air cavity (3) is provided with an adjustable opening to adjust the temperature.

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