Double internal circulation heating sterilization cabinet

Abstract

The utility model discloses a double inner circulation heating sterilization cabinet, including the cabinet body and setting the inner bag in the cabinet body, the inner bag back middle part is equipped with centrifugal fan, and the centrifugal fan is equipped with the air inlet in the inner bag, and the centrifugal fan top is equipped with the first air outlet, and the first air outlet is connected with the inner bag top through the first air duct, and the centrifugal fan bottom is equipped with the second air outlet, and the second air outlet is connected with the inner bag bottom through the second air duct, and the air inlet, first air duct, inner bag upper portion intercommunication forms the first circulation flow channel, and the first circulation flow channel is equipped with the first heating tube, and the air inlet, second air duct, inner bag lower portion intercommunication forms the second circulation flow channel, and the second circulation flow channel is equipped with the second heating tube. The utility model discloses a centrifugal fan in the inner bag forms two circulation air ducts, compared with the prior art, can make the temperature of each part of the inner bag reach the preset sterilization temperature faster, and each part of the inner bag is basically same, shortens the time required for sterilization procedure, and uses more energy -conserving, efficient.

Description

Technical Field

[0001] This utility model relates to the field of disinfection cabinet technology, specifically to a dual internal circulation heating disinfection cabinet. Background Technology

[0002] Most disinfection cabinets on the market achieve disinfection through heating elements and ultraviolet lamps. Ultraviolet lamp disinfection is prone to dead zones and incomplete disinfection. While heating elements provide comprehensive disinfection with high temperatures, the temperature near the heating element is higher than that further away, resulting in longer disinfection times. To improve disinfection, fans are used in these cabinets to circulate the heat, but existing models still have long circulation distances, leaving areas further from the heating element relatively cool. This requires a longer time to achieve a relatively uniform temperature, leading to longer disinfection cycles. Utility Model Content

[0003] The purpose of this invention is to provide a dual-internal-circulation heating and disinfection cabinet with an inner liner that can quickly reach essentially the same temperature.

[0004] The purpose of this utility model is achieved as follows.

[0005] A dual-internal-circulation heating and disinfection cabinet includes a cabinet body and an inner liner installed inside the cabinet body. A centrifugal fan is provided in the middle of the back of the inner liner. The centrifugal fan has an air inlet corresponding to the inner liner. A first air outlet is provided at the top of the centrifugal fan. The first air outlet is connected to the top of the inner liner through a first air duct. A second air outlet is provided at the bottom of the centrifugal fan. The second air outlet is connected to the bottom of the inner liner through a second air duct. The air inlet, the first air duct, and the upper part of the inner liner are connected to form a first circulation channel. A first heating element is provided in the first circulation channel. The air inlet, the second air duct, and the lower part of the inner liner are connected to form a second circulation channel. A second heating element is provided in the second circulation channel.

[0006] Furthermore, the centrifugal fan includes a housing and a rotor rotatably disposed inside the housing. The motor shaft extends from the back of the housing into the housing to drive the rotor to rotate. The air inlet is provided on the front of the housing corresponding to the center of the rotor. The first air outlet is provided vertically upward on the top surface of the housing, and the second air outlet is provided vertically downward on the bottom surface of the housing.

[0007] The centrifugal fan design facilitates the uniform flow of air from the first and second air outlets, with the gas flow rates in the first and second circulation channels being approximately the same.

[0008] Furthermore, a first connecting part extends upward from the right side of the top of the outer casing, and the first air outlet is provided on the top surface of the first connecting part. A second connecting part extends downward from the left side of the bottom of the outer casing, and the second air outlet is provided on the bottom surface of the second connecting part.

[0009] The first connecting part facilitates connection with the first air duct, and the second connecting part facilitates connection with the second air duct.

[0010] Furthermore, the first air outlet and the second air outlet, the first air duct and the second air duct are arranged symmetrically around the center of the rotating shaft.

[0011] This design facilitates airflow from the centrifugal fan into the first and second air ducts, resulting in smoother airflow and reduced noise.

[0012] Furthermore, the back of the inner liner is provided with a first cover and a second cover. The front of the first cover is open and fixed to the back of the inner liner to form the first air duct. The bottom of the first cover is connected to the first air outlet, and the top of the first cover is connected to the upper part of the inner liner. The front of the second cover is open and fixed to the back of the inner liner to form the second air duct. The top of the second cover is connected to the second air outlet, and the bottom of the second cover is connected to the lower part of the inner liner.

[0013] The first and second air ducts are easy to form and have low cost.

[0014] Furthermore, the first cover and the second cover have the same structure. The first cover and the second cover are centrally symmetrical about the center of rotation. The width of the first cover and the second cover gradually increases from the inlet to the outlet, and the thickness of the first cover and the second cover gradually decreases from the width from the inlet to the outlet. The back of the inner liner has several horizontally arranged first connecting ports corresponding to the outlet of the first cover, and the back of the inner liner has several horizontally arranged second connecting ports corresponding to the outlet of the second cover.

[0015] The first and second covers reduce the pressure and velocity of the airflow from the inlet to the outlet, making the airflow more stable and uniform, which is conducive to the airflow carrying away the heat from the first and second heating tubes.

[0016] Furthermore, both the first heating element and the second heating element are located in the inner liner, with the first connecting port located on the back of the first heating element and the second connecting port located on the back of the second heating element.

[0017] The first and second heating elements provide higher heating efficiency for the inner liner.

[0018] Furthermore, the first heating element is disposed inside the first cover, and the first connecting port is located on the front of the first heating element; the second heating element is disposed inside the second cover, and the second connecting port is located on the front of the second heating element.

[0019] The first and second heating elements are concealed, eliminating the need for protective covers for them.

[0020] Furthermore, a return air duct is provided between the centrifugal fan and the back of the inner liner. The return air duct is arranged horizontally. Between the first air duct and the second air duct, the back of the inner liner is provided with several horizontally arranged return connection ports corresponding to the return air duct. The middle part of the inner liner, the return connection ports, the return air duct and the air inlet are connected.

[0021] The return air duct allows airflow in the middle of the inner tank to enter the centrifugal fan evenly, reducing the suction force at the return connection port.

[0022] Furthermore, a third cover is provided on the back of the inner liner. The front of the third cover is open and fixed to the back of the inner liner to form the return air duct. The back of the third cover is provided with a through hole that connects to the air inlet. The centrifugal fan is fixed to the back of the third cover, and the air inlet and the through hole are aligned and connected.

[0023] The return air duct is easy to form and has low cost. The third enclosure avoids direct contact between the centrifugal fan and the inner liner, reduces the number of openings in the inner liner, and improves the airtightness of the inner liner.

[0024] This invention utilizes a centrifugal fan to form two circulating air ducts within the inner tank. Compared to existing technologies, this allows the temperature throughout the inner tank to reach the preset disinfection temperature more quickly, and the temperature remains essentially the same throughout the inner tank, shortening the time required for the disinfection process and making it more energy-efficient and effective. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the internal structure of Example 1.

[0026] Figure 2 This is a schematic diagram of the inner liner structure in Example 1.

[0027] Figure 3 This is a schematic diagram of the back structure of the inner liner in Example 1.

[0028] Figure 4 This is a schematic diagram showing the exploded structure of the inner liner, the first circulation channel, and the second circulation channel in Example 1.

[0029] Figure 5 This is an exploded structural diagram of the centrifugal fan, the first air duct, and the second air duct in Example 1.

[0030] Figure 6 This is a schematic diagram of the centrifugal fan in Example 1 (in a sealed state).

[0031] Figure 7 This is a cross-sectional structural diagram of Example 1.

[0032] Figure 8 This is a cross-sectional structural diagram of Example 2. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] Example 1, see Figure 1-7 As shown, a dual-internal-circulation heating and disinfection cabinet includes a cabinet body 1 and an inner liner 2 disposed within the cabinet body 1. A centrifugal fan 3 is located in the center of the back of the inner liner 2. The centrifugal fan 3 has an air inlet 30 corresponding to the inner liner 2. A first air outlet 31 is located at the top of the centrifugal fan 3, connecting to the top of the inner liner 2 via a first air duct 4. A second air outlet 32 ​​is located at the bottom of the centrifugal fan 3, connecting to the bottom of the inner liner 2 via a second air duct 6. The air inlet 30, the first air duct 4, and the upper part of the inner liner 2 are connected to form a first circulation channel 5, in which a first heating element 51 is disposed. The air inlet 30, the second air duct 6, and the lower part of the inner liner 2 are connected to form a second circulation channel 7, in which a second heating element 71 is disposed. The inner liner 2 also includes an ultraviolet lamp 20.

[0035] The centrifugal fan 3 includes a housing 33 and a fan wheel 34 rotatably disposed within the housing 33. A motor shaft (not shown in the figure) extends from the back of the housing 33 into the housing 33 to drive the fan wheel 34 to rotate. An air inlet 30 is located on the front of the housing 33 corresponding to the center of the fan wheel 34. A first air outlet 31 is vertically upward on the top surface of the housing 33, and a second air outlet 32 ​​is vertically downward on the bottom surface of the housing 33. Specifically, a first connecting portion 35 extends upward from the right side of the top of the housing 33, with the first air outlet 31 located on the top surface of the first connecting portion 35. A second connecting portion 36 extends downward from the left side of the bottom of the housing 33, with the second air outlet 32 ​​located on the bottom surface of the second connecting portion 36. The first connecting portion 35 and the second connecting portion 36 extend tangentially to the housing 33, and are hollow internally.

[0036] In this embodiment, the first air outlet 31 and the second air outlet 32, the first air duct 4 and the second air duct 6 are arranged symmetrically around the center of the rotation axis. The back of the inner liner 2 is provided with a first cover 41 and a second cover 61. The front of the first cover 41 is open and fixed to the back of the inner liner 2 to form the first air duct 4. The bottom of the first cover 41 is connected to the first air outlet 31, and the top of the first cover 41 is connected to the upper part of the inner liner 2. The front of the second cover 61 is open and fixed to the back of the inner liner 2 to form the second air duct 6. The top of the second cover 61 is connected to the second air outlet 32, and the bottom of the second cover 61 is connected to the lower part of the inner liner 2.

[0037] The first cover 41 and the second cover 61 have the same structure. The first cover 41 and the second cover 61 are centrally symmetrical about the center of rotation. The width of the first cover 41 and the second cover 61 gradually increases from the inlet to the outlet, and the thickness of the first cover 41 and the second cover 61 gradually decreases from the width of the inlet to the outlet. The back of the inner liner 2 is provided with several horizontally arranged first connecting ports 21 corresponding to the outlet of the first cover 41, and the back of the inner liner 2 is provided with several horizontally arranged second connecting ports 22 corresponding to the outlet of the second cover 61.

[0038] See Figure 1 and Figure 7 As shown, the first heating element 51 and the second heating element 71 are both horizontally arranged in the inner liner 2. The first connecting port 21 is located on the back of the first heating element 51, and the second connecting port 22 is located on the back of the second heating element 71. The inner liner 2 is provided with protective covers 9 corresponding to the first heating element 51 and the second heating element 71, and the first heating element 51 and the second heating element 71 are respectively fixed in the corresponding protective covers 9. The rear end of the protective cover 9 is open, and the front end of the protective cover 9 is provided with a through hole 91 to facilitate airflow through the first heating element 51, the second heating element 71, and the protective cover 9.

[0039] A return air duct 8 is provided between the centrifugal fan 3 and the back of the inner liner 2. The return air duct 8 is arranged horizontally between the first air duct 4 and the second air duct 6. The back of the inner liner 2 is provided with several horizontally arranged return connection ports 23 corresponding to the return air duct 8. The middle part of the inner liner 2, the return connection ports 23, the return air duct 8 and the air inlet 30 are connected. A third cover 81 is provided on the back of the inner liner 2. The front of the third cover 81 is open and fixed to the back of the inner liner 2 to form the return air duct 8. The back of the third cover 81 is provided with a through hole 82 connecting to the air inlet 30. The centrifugal fan 3 is fixed to the back of the third cover 81. The air inlet 30 and the through hole 82 are aligned and connected. In this embodiment, the return connection ports 23 are divided into three groups arranged horizontally. The first connection port 21, the second connection port 22, the return connection ports 23 of the left group, and the return connection ports 23 of the left group are arranged in a cross shape with the return connection ports 23 of the middle group.

[0040] When the disinfection cabinet enters its working state, the motor drives the fan 34 to rotate, blowing airflow from the outer shell 33 outwards from both the top and bottom through the first air outlet 31 and the second air outlet 32. Airflow from the first air outlet 31 enters the first air duct 4, where it slows down and passes through the first connecting port 21 into the upper part of the inner liner 2. The airflow then flows into the inner liner 2, passes through the first heating element 51, and carries away the heat generated by the heating element 51, heating the upper part of the inner liner 2. Airflow from the second air outlet 32 ​​enters the second air duct 6, where it slows down and passes through the second connecting port 22 into the lower part of the inner liner 2. The airflow then flows into the inner liner 2, passes through the second heating element 71, and carries away the heat generated by the heating element 71, heating the lower part of the inner liner 2. Simultaneously, a negative pressure inside the outer shell 33 draws airflow from the return air duct 8 into the air inlet 30, and airflow from the middle of the inner liner 2 is drawn into the return air duct 8 through the return connecting port 23. This achieves synchronous flow in the first circulation channel 5 and the second circulation channel 7, thereby quickly and evenly raising the temperature of the inner liner 2 to the preset disinfection temperature.

[0041] See Figure 8 As shown, in Embodiment 2, the difference from Embodiment 1 is that: the first heating element 51 is disposed inside the first cover 41, and the first connecting port 21 is located on the front of the first heating element 51; the second heating element 71 is disposed inside the second cover 61, and the second connecting port 22 is located on the front of the second heating element 71. Thus, the first heating element 51 and the second heating element 71 are concealed, and a protective cover 9 is not required.

[0042] The terms used in this utility model, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are only used for distinction.

[0043] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0044] In this utility model, terms indicating direction or location such as front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.

[0045] Terms used in this invention, such as "approximately," "overall," "approximately," and "similar," are limiting terms used to indicate features that exist but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context.

Claims

1. A dual internal circulation heating and disinfection cabinet, comprising a cabinet body and an inner liner disposed within the cabinet body, characterized in that, A centrifugal fan is located in the middle of the back of the inner liner. The centrifugal fan has an air inlet corresponding to the inner liner. The top of the centrifugal fan has a first air outlet, which is connected to the top of the inner liner through a first air duct. The bottom of the centrifugal fan has a second air outlet, which is connected to the bottom of the inner liner through a second air duct. The air inlet, the first air duct, and the upper part of the inner liner are connected to form a first circulation channel. A first heating element is located in the first circulation channel. The air inlet, the second air duct, and the lower part of the inner liner are connected to form a second circulation channel. A second heating element is located in the second circulation channel.

2. The dual internal circulation heating and disinfection cabinet according to claim 1, characterized in that, The centrifugal fan includes a housing and a rotor rotatably disposed inside the housing. The motor shaft extends from the back of the housing into the housing to drive the rotor to rotate. The air inlet is provided on the front of the housing corresponding to the center of the rotor. The first air outlet is provided vertically upward on the top surface of the housing, and the second air outlet is provided vertically downward on the bottom surface of the housing.

3. The dual internal circulation heating and disinfection cabinet according to claim 2, characterized in that, A first connecting part extends upward from the right side of the top of the outer casing, and the first air outlet is provided on the top surface of the first connecting part. A second connecting part extends downward from the left side of the bottom of the outer casing, and the second air outlet is provided on the bottom surface of the second connecting part.

4. The dual internal circulation heating and disinfection cabinet according to claim 2, characterized in that, The first and second air outlets, the first air duct and the second air duct are arranged symmetrically around the center of the rotating shaft.

5. The dual internal circulation heating and disinfection cabinet according to claim 2, characterized in that, The inner liner has a first cover and a second cover on the back. The first cover is open on the front and fixed to the back of the inner liner to form the first air duct. The bottom of the first cover is connected to the first air outlet and the top of the first cover is connected to the upper part of the inner liner. The second cover is open on the front and fixed to the back of the inner liner to form the second air duct. The top of the second cover is connected to the second air outlet and the bottom of the second cover is connected to the lower part of the inner liner.

6. The dual internal circulation heating and disinfection cabinet according to claim 5, characterized in that, The first and second covers have the same structure and are centrally symmetrical about the pivot. The width of the first and second covers gradually increases from the inlet to the outlet, and the thickness of the first and second covers gradually decreases from the inlet to the outlet. The back of the inner liner has several horizontally arranged first connecting ports corresponding to the outlet of the first cover, and the back of the inner liner has several horizontally arranged second connecting ports corresponding to the outlet of the second cover.

7. The dual internal circulation heating and disinfection cabinet according to claim 6, characterized in that, Both the first heating element and the second heating element are located in the inner liner. The first connecting port is located on the back of the first heating element, and the second connecting port is located on the back of the second heating element.

8. The dual internal circulation heating and disinfection cabinet according to claim 6, characterized in that, The first heating element is installed inside the first cover, and the first connecting port is located on the front of the first heating element. The second heating element is installed inside the second cover, and the second connecting port is located on the front of the second heating element.

9. The dual internal circulation heating and disinfection cabinet according to claim 1, characterized in that, A return air duct is provided between the centrifugal fan and the back of the inner liner. The return air duct is arranged horizontally. Between the first air duct and the second air duct, there are several horizontally arranged return connection ports on the back of the inner liner corresponding to the return air duct. The middle part of the inner liner, the return connection ports, the return air duct and the air inlet are connected.

10. The dual internal circulation heating and disinfection cabinet according to claim 9, characterized in that, The inner liner has a third cover on the back. The front of the third cover is open and fixed to the back of the inner liner to form the return air duct. The back of the third cover has a through hole that connects to the air inlet. The centrifugal fan is fixed to the back of the third cover. The air inlet and the through hole are aligned and connected.

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