Plenum chamber and oven

Abstract

The utility model provides a plenum chamber and a drying oven, the plenum chamber comprises a main body part and a flow guide part, the main body part is enclosed to form a channel, one end of the main body part is provided with an air inlet, the other end of the main body part is provided with an air outlet, and the channel is communicated with the air inlet and the air outlet; at least part of the flow guide part is arranged in the channel, and the flow guide part covers the air inlet; the flow guide part comprises a central area and a peripheral area which are connected, a plurality of first ventilation holes are formed in the central area, a plurality of second ventilation holes are formed in the peripheral area, and the average diameter of the first ventilation holes is larger than that of the second ventilation holes. The flow guide part is arranged in the main body part, so that air flow entering the main body part can be conveniently guided, and the hole sizes of the central area and the peripheral area of the flow guide part are designed to be different, so that different flow guide effects are achieved on the air flow at different positions, and the air flow can become uniformly distributed air flow after passing through the static pressure box; therefore, turbulent flow is avoided, and the airflow can be uniformly blown to the bottle body.

Description

Technical Field

[0001] The utility model embodiment relates to the technical field of automated production equipment, and in particular to a static pressure box and a drying oven. Background Art

[0002] The existing tunnel oven is equipped with a mesh belt conveyor, through which the bottles can be conveyed to pass through different functional modules in the tunnel oven in sequence. An air supply system is usually installed in the tunnel oven, through which hot air and cold air are blown to the bottles on the mesh belt conveyor. A mute box is usually provided in the air supply system. Most of the existing mute boxes are in the shape of a cone with a small top and a large bottom. They can stabilize the voltage and reduce noise, but they cannot guarantee that the airflow can pass evenly. The flow rate of the airflow may be unstable, thus generating turbulence below the air outlet of the air supply system, causing uneven heating of the bottles on the mesh belt conveyor and uneven sterilization. Utility Model Content

[0003] The purpose of the embodiments of the utility model is to provide a static pressure box and an oven, aiming to solve the problem that the existing static pressure box cannot ensure that the airflow can pass through evenly.

[0004] In order to solve the above technical problems, the embodiment of the utility model provides a static pressure box, comprising:

[0005] A main body portion is surrounded to form a channel, one end of the main body portion is provided with an air inlet, and the other end is provided with an air outlet, and the channel connects the air inlet and the air outlet;

[0006] The air guide portion is at least partially arranged in the channel, and the air guide portion cover is arranged at the air inlet; the air guide portion includes a central area and a peripheral area connected to each other, the central area is provided with a plurality of first ventilation holes, and the peripheral area is provided with a plurality of second ventilation holes, and the average diameter of the plurality of first ventilation holes is greater than the average diameter of the plurality of second ventilation holes.

[0007] The utility model has a guide portion in the main body, which is convenient for guiding the airflow entering the main body, and the opening sizes of the central area and the peripheral area of ​​the guide portion are designed to be different, so that different guide effects are played on the airflow at different positions, so that the airflow can become a uniformly distributed airflow after passing through the static pressure box, avoiding the generation of turbulence, and the airflow can be evenly blown to the bottle body, so that it can be evenly heated and sterilized.

[0008] Preferably, an average spacing between the plurality of first ventilation holes is greater than an average spacing between the plurality of second ventilation holes.

[0009] Preferably, the intervals between the plurality of first ventilation holes are arranged to gradually increase in a direction from the edge to the center of the central area.

[0010] Preferably, the diameters of the plurality of first ventilation holes are equal.

[0011] Preferably, the diameters of the plurality of first ventilation holes do not exceed 5 mm.

[0012] Preferably, the diameters of the plurality of second ventilation holes are equal.

[0013] Preferably, the diameters of the plurality of second ventilation holes do not exceed 5 mm.

[0014] Preferably, the peripheral area includes a plurality of guide mesh inclined plates, the plurality of second ventilation holes are arranged on the plurality of guide mesh inclined plates, the plurality of guide mesh inclined plates are connected in sequence along the circumference of the air inlet, the same end of the plurality of guide mesh inclined plates is connected to the main body, and the plurality of guide mesh inclined plates are arranged gradually approaching each other in the direction from the air inlet to the air outlet.

[0015] Preferably, the central area includes a guide mesh plate, which is arranged toward the air inlet, and is sealingly arranged at one end of the multiple guide mesh inclined plates away from the air inlet, and the multiple first ventilation holes are arranged on the guide mesh plate.

[0016] Preferably, the inclination angles of at least two of the plurality of guide mesh inclined plates are different.

[0017] Preferably, the spacing between the second ventilation holes on any one of the guide mesh inclined plates is equal.

[0018] Preferably, there are four guide mesh inclined plates, and the four guide mesh inclined plates include a first guide mesh inclined plate, a second guide mesh inclined plate, a third guide mesh inclined plate, and a fourth guide mesh inclined plate which are connected in sequence.

[0019] Preferably, the spacing between the second ventilation holes on the first guide mesh inclined plate is equal to the spacing between the second ventilation holes on the third guide mesh inclined plate.

[0020] Preferably, the spacing between the second ventilation holes on the second guide mesh inclined plate is equal to the spacing between the second ventilation holes on the fourth guide mesh inclined plate.

[0021] Preferably, the spacing between the second ventilation holes on the second guide mesh inclined plate is not equal to the spacing between the second ventilation holes on the first guide mesh inclined plate.

[0022] In order to achieve the above object, the utility model also provides an oven, comprising:

[0023] A box body, wherein a conveying device is arranged inside the box body;

[0024] An air supply device is arranged in the box body, and is used to blow air to the objects on the conveying device. The air supply device is provided with the above-mentioned static pressure box. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0026] Figure 1 A schematic diagram of the structure of the static pressure box provided by an embodiment of the utility model;

[0027] Figure 2 for Figure 1 A schematic diagram of the structure of the static pressure box from another perspective;

[0028] Figure 3 for Figure 1 A cross-sectional view of the static pressure box;

[0029] Figure 4 for Figure 1 Another cross-sectional view of the plenum;

[0030] Figure 5 for Figure 1 A schematic diagram of the structure of the components of the middle guide mesh inclined plate and the guide mesh flat plate;

[0031] Figure 6 for Figure 1 Simulation effect diagram of the medium static pressure box after removing the diversion mesh inclined plate and diversion mesh flat plate;

[0032] Figure 7 for Figure 1 Simulation effect diagram of the medium static pressure box;

[0033] Figure 8 A cross-sectional view of an oven provided in an embodiment of the utility model.

[0034] Description of the figures of the utility model:

[0035] Oven 1000, static pressure box 100, main body 1, air inlet 11, air outlet 12, gradually expanding section 13, top plate 14, side plate 15, guide part 2, central area 21, peripheral area 22, first ventilation hole 23, second ventilation hole 24, guide mesh inclined plate 25, first guide mesh inclined plate 25a, second guide mesh inclined plate 25b, third guide mesh inclined plate 25c, fourth guide mesh inclined plate 25d, guide mesh flat plate 26, air supply device 200, fan 210, air duct 220, air collecting tube 230, high efficiency filter 240, flow equalizing plate 250, deflector 260, box body 300, conveying device 400, return air box 500.

[0036] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0040] The utility model provides a static pressure box, which can be installed in automated production equipment such as an oven. The following will take the installation of the static pressure box in the oven as an example for introduction. Figures 1 to 5 A preferred embodiment of the static pressure box provided by the utility model is shown.

[0041] See also Figure 1 , Figure 2 and Figure 5 In this embodiment, the static pressure box 100 includes a main body 1 and a guide part 2, the main body 1 is surrounded to form a channel (not shown in the figure), one end of the main body 1 is provided with an air inlet 11, and the other end is provided with an air outlet 12, and the channel connects the air inlet 11 and the air outlet 12; the guide part 2 is at least partially arranged in the channel, and the guide part 2 is covered with the air inlet 11; the guide part 2 includes a connected central area 21 and a peripheral area 22, the central area 21 is provided with a plurality of first ventilation holes 23, and the peripheral area 22 is provided with a plurality of second ventilation holes 24, and the average diameter of the plurality of first ventilation holes 23 is greater than the average diameter of the plurality of second ventilation holes 24.

[0042] Specifically, the air guide 2 is arranged in a hood shape, so that the air guide 2 can be arranged inside the air inlet 11. The airflow can enter the channel of the main body 1 from the air inlet 11, and the airflow can flow out of the main body 1 from the air outlet 12 after passing through the air guide 2. The air inlet 11 and the air outlet 12 are usually arranged opposite to each other at a distance, and the distance direction between the air inlet 11 and the air outlet 12 is defined as the up-down direction below, and the direction of the air inlet 11 is upward, and the direction of the air outlet 12 is downward.

[0043] The guide portion 2 can guide the airflow entering the main body 1 from the air inlet 11. The guide portion 2 includes a connected central area 21 and a peripheral area 22. The central area 21 is usually an area on the guide portion 2 that is opposite to the center of the air inlet 11 up and down, and the peripheral area 22 is an area on the guide portion 2 that is located outside the central area 21. The central area 21 is closer to the center of the air inlet 11 horizontally than the peripheral area 22.

[0044] The central area 21 is provided with a plurality of first ventilation holes 23 for air flow to pass through. The diameters of the plurality of first ventilation holes 23 in the central area 21 may be equal or unequal, and the average diameter of the plurality of first ventilation holes 23 is the average value of the diameters of all the first ventilation holes 23 in the central area 21 .

[0045] Similarly, the peripheral area 22 is provided with a plurality of second ventilation holes 24 for air flow to pass through. The diameters of the plurality of second ventilation holes 24 in the peripheral area 22 may be equal or not completely equal, and the average diameter of the plurality of second ventilation holes 24 is the average value of the diameters of all the first ventilation holes 23 in the peripheral area 22.

[0046] See also Figure 6 and Figure 7, the closer the airflow entering from the air inlet 11 is to the center of the air inlet 11, the faster the airflow velocity will be, so the velocity of the airflow blowing to the central area 21 is greater than the velocity of the airflow blowing to the peripheral area 22. The average diameter of the multiple first ventilation holes 23 in the central area 21 is designed to be greater than the average diameter of the multiple second ventilation holes 24 in the peripheral area 22, so that the velocity of the airflow passing through the central area 21 can be equal to or approximately equal to the velocity of the airflow passing through the peripheral area 22. In this way, the opening sizes of different areas of the guide part 2 are set to be different, which has different guiding effects on the airflow at different positions, so that the airflow can become a uniformly distributed airflow after passing through the static pressure box 100, avoiding the generation of turbulence.

[0047] A guide portion 2 is provided in the main body 1 of the utility model, which facilitates the guidance of the airflow entering the main body 1, and the opening sizes of the peripheral area 22 and the central area 21 of the guide portion 2 are designed to be different, so that different guiding effects are played on the airflow at different positions, so that the airflow can become a uniformly distributed airflow after passing through the static pressure box 100, avoiding the generation of turbulence, and the airflow can be evenly blown to the bottle body, so that it can be evenly heated and sterilized.

[0048] The guide part 2 is arranged in a cover shape, and the specific style of the guide part 2 can be set according to actual conditions. Figure 1 , Figure 2 and Figure 5 In this embodiment, the peripheral area 22 includes a plurality of guide mesh inclined plates 25, a plurality of second ventilation holes 24 are provided on the plurality of guide mesh inclined plates 25, the plurality of guide mesh inclined plates 25 are connected in sequence along the circumference of the air inlet 11, the same end of the plurality of guide mesh inclined plates 25 is connected to the main body 1, and the plurality of guide mesh inclined plates 25 are gradually arranged to approach each other in the direction from the air inlet 11 to the air outlet 12.

[0049] Specifically, the multiple guide mesh inclined plates 25 are inclined from bottom to top in a direction away from the center of the air inlet 11, and the multiple guide mesh inclined plates 25 are cylindrically enclosed along the circumference of the air inlet 11. The upper ends of the multiple guide mesh inclined plates 25 are connected to the main body 1 and are located at the periphery of the air inlet 11. At least two second ventilation holes 24 are arranged in an array on each guide mesh inclined plate 25. The following will take the example of multiple guide mesh inclined plates 25 forming the peripheral area 22 of the guide part 2 as an example.

[0050] For further information, see Figure 1 , Figure 2 and Figure 5In this embodiment, the central area 21 includes a guide mesh plate 26, which is arranged toward the air inlet 11. The guide mesh plate 26 is sealed and arranged at one end of the multiple guide mesh inclined plates 25 away from the air inlet 11, and multiple first ventilation holes 23 are arranged on the guide mesh plate 26.

[0051] Specifically, the guide mesh plate 26 is arranged vertically or approximately vertically in the upper and lower directions, and the guide mesh plate 26 covers the lower ends of multiple guide mesh inclined plates 25, so that the multiple guide mesh inclined plates 25 and the guide mesh plate 26 are connected together and form a certain angle, which is convenient for guiding the airflow entering the main body 1. The following will take the guide mesh plate 26 forming the central area 21 of the guide part 2 as an example for introduction.

[0052] Among them, the guide mesh flat plate 26 and the multiple guide mesh inclined plates 25 can be fixedly connected together by welding or the like to form a cover-shaped guide portion 2; the guide mesh flat plate 26 and the multiple guide mesh inclined plates 25 can also be integrally formed to form a cover-shaped guide portion 2.

[0053] Since the guide mesh plate 26 is located in the central area 21, and the plurality of guide mesh plates 26 are located in the peripheral area 22, the velocity of the airflow blowing toward the guide mesh plate 26 is greater than the velocity of the airflow blowing toward the guide mesh inclined plate 25. The average diameter of the plurality of first ventilation holes 23 is designed to be greater than the average diameter of the plurality of second ventilation holes 24, so that the opening size of the guide mesh plate 26 is greater than the opening size of the plurality of guide mesh inclined plates 25, so that the velocity of the airflow passing through the guide mesh plate 26 is equal to or approximately equal to the velocity of the airflow passing through the plurality of guide mesh inclined plates 25. In this way, the mesh plates at different positions (i.e., the plurality of guide mesh inclined plates 25 and the guide mesh plate 26) play different guiding roles on the airflow at different positions, so that the airflow can become a uniformly distributed airflow after passing through the static pressure box 100, thereby avoiding the generation of turbulence.

[0054] As described above, the diameters of the plurality of first ventilation holes 23 in the central area 21 may be equal or not completely equal. Figures 3 to 5 In this embodiment, the diameters of the plurality of first ventilation holes 23 are equal. That is, the diameters of all the first ventilation holes 23 on the guide mesh plate 26 are equal, so the processing difficulty of the guide mesh plate 26 is relatively low.

[0055] Optionally, see Figures 3 to 5 In this embodiment, the diameters of the plurality of first ventilation holes 23 and / or the plurality of second ventilation holes 24 do not exceed 5 mm.

[0056] Specifically, when the opening size of the mesh plate is smaller, the uniformity of the airflow passing through the mesh plate is better than when the opening size of the mesh plate is larger. For example, in this embodiment, the opening size of the guide mesh flat plate 26 is 4 mm, and the opening sizes of the plurality of guide mesh inclined plates 25 are all 1.5 mm.

[0057] The diameters of all the second ventilation holes 24 on any one of the guide mesh inclined plates 25 may be equal or not completely equal. The following description will be made by taking the example that the diameters of all the second ventilation holes 24 on any one of the guide mesh inclined plates 25 are equal.

[0058] The opening sizes of multiple guide mesh inclined plates 25 can be designed based on the simulation results. For example, the opening sizes of multiple guide mesh inclined plates 25 can be designed to be equal; the opening sizes of multiple guide mesh inclined plates 25 can also be designed to be unequal; and the opening sizes of some guide mesh inclined plates 25 in the multiple guide mesh inclined plates 25 can also be designed to be equal.

[0059] Optionally, see Figures 3 to 5 In this embodiment, the diameters of the plurality of second ventilation holes 24 are equal.

[0060] Specifically, the diameters of all the second ventilation holes 24 on each guide mesh inclined plate 25 are equal, and the diameters of the second ventilation holes 24 on any two guide mesh inclined plates 25 are equal, so that the processing difficulty of the plurality of guide mesh inclined plates 25 is relatively low. For example, in this embodiment, the opening sizes of the plurality of guide mesh inclined plates 25 are all 1.5 mm.

[0061] Optionally, see Figure 2 , Figure 3 and Figure 5 In this embodiment, the spacing between the plurality of first ventilation holes 23 is gradually increased in a direction from the edge to the center of the central area 21 .

[0062] Specifically, the opening spacing of the guide mesh plate 26 is gradually increased in the direction from the edge to the center of the guide mesh plate 26. The center of the guide mesh plate 26 is usually opposite to the center of the air inlet 11, and the airflow entering from the air inlet 11 is usually closer to the center of the air inlet 11, the greater the airflow volume. The opening spacing of the guide mesh plate 26 is designed to gradually increase toward the center, so that the airflow volume of the airflow passing through different positions of the guide mesh plate 26 can be equal or approximately equal.

[0063] Likewise, see Figures 3 to 5 In this embodiment, the average spacing between the plurality of first ventilation holes 23 is greater than the average spacing between the plurality of second ventilation holes 24 .

[0064] Specifically, the average spacing between the multiple first ventilation holes 23 in the central area 21 is greater than the average spacing between the multiple second ventilation holes 24 in the peripheral area 22, that is, the opening spacing of the guide mesh plate 26 is greater than the opening spacing of the multiple guide mesh inclined plates 25, that is, the opening spacing of the guide mesh plate 26 at the minimum opening spacing is greater than the opening spacing of the multiple guide mesh inclined plates 25. The opening spacing of the guide mesh plate 26 is designed to be greater than the opening spacing of the multiple guide mesh inclined plates 25, so that the air volume of the airflow passing through the guide mesh plate 26 and the air volume of the airflow passing through the multiple guide mesh inclined plates 25 can be equal or approximately equal.

[0065] The spacing between the second ventilation holes 24 on any one of the plurality of guide mesh inclined plates 25 may be equal; the spacing between the second ventilation holes 24 on any one of the guide mesh inclined plates 25 may also gradually decrease in the direction away from the central area 21. The opening spacing between any two of the plurality of guide mesh inclined plates 25 may be designed to be equal or unequal according to the simulation results, which will be specifically described below.

[0066] As described above, the center of the guide mesh plate 26 is usually opposite to the center of the air inlet 11, and at least a portion of the air inlet 11 is usually opposite to the guide mesh plate 26. Figure 1 , Figure 3 and Figure 4 In this embodiment, at least a portion of the air inlet 11 is opposite to the guide mesh plate 26 in the direction from the air inlet 11 to the air outlet 12 .

[0067] Specifically, the size and position relationship between the air inlet 11 and the guide mesh plate 26 can be designed based on the simulation results. For example, the entire air inlet 11 can be designed to be opposite to the guide mesh plate 26 in up and down; or part of the air inlet 11 can be designed to be opposite to the guide mesh plate 26 in up and down, and the remaining part of the air inlet 11 can be opposite to the guide mesh inclined plate 25 in up and down.

[0068] A plurality of diversion mesh inclined plates 25 and a diversion mesh flat plate 26 are arranged in the main body 1. Figure 1 and Figure 2 In this embodiment, the main body 1 includes a gradually expanding section 13, which is gradually expanded in the direction from the air inlet 11 to the air outlet 12, and the guide mesh flat plate 26 and multiple guide mesh inclined plates 25 are all arranged in the gradually expanding section 13.

[0069] Specifically, the gradually expanding section 13 is gradually expanded from top to bottom. The airflow passes through a plurality of guide mesh inclined plates 25 and a guide mesh flat plate 26 and then enters the gradually expanding section 13. The gradually expanding section 13 can also guide the airflow, thereby ensuring that the airflow can be evenly blown out from the air outlet 12.

[0070] For further information, see Figure 1 and Figure 2 In this embodiment, the gradually expanding section 13 includes a top plate 14 and a side plate 15. The top plate 14 is provided with an air inlet 11. The side plate 15 is connected to the top plate 14. The side plate 15 is provided with multiple guide mesh inclined plates 25 corresponding to the multiple guide mesh inclined plates 25. The multiple side plates 15 are connected in sequence along the circumference of the top plate 14. Each guide mesh inclined plate 25 is connected to the connection between a corresponding side plate 15 and the top plate 14.

[0071] Specifically, the plurality of side panels 15 and the plurality of guide mesh inclined panels 25 are arranged in a one-to-one correspondence, and the upper end of each side panel 15 is connected to the upper end of a corresponding guide mesh inclined panel 25 and a corresponding edge of the top panel 14. Each side panel 15 can guide the airflow passing through a corresponding guide mesh inclined panel 25.

[0072] The specific number of the guide mesh inclined plates 25 can be set according to actual conditions. Figure 2 and Figure 5 In the present embodiment, four guide mesh inclined plates 25 are provided, and the four guide mesh inclined plates 25 include a first guide mesh inclined plate 25a, a second guide mesh inclined plate 25b, a third guide mesh inclined plate 25c, and a fourth guide mesh inclined plate 25d which are connected in sequence.

[0073] Specifically, the static pressure box 100 is provided with five mesh plates, namely, the first guide mesh inclined plate 25a, the second guide mesh inclined plate 25b, the third guide mesh inclined plate 25c, the fourth guide mesh inclined plate 25d and the guide mesh flat plate 26. The guide mesh flat plate 26 is a square mesh plate in a rectangular shape, while the first guide mesh inclined plate 25a, the second guide mesh inclined plate 25b, the third guide mesh inclined plate 25c, and the fourth guide mesh inclined plate 25d are all trapezoidal mesh plates.

[0074] The first guide mesh inclined plate 25a, the second guide mesh inclined plate 25b, the third guide mesh inclined plate 25c, the fourth guide mesh inclined plate 25d and the guide mesh flat plate 26 can be fixedly connected together by welding. Figure 3 When welding the first guide mesh inclined plate 25a, the third guide mesh inclined plate 25c and the guide mesh flat plate 26, the three form an angle when welded.

[0075] The inclination angles of the multiple guide mesh inclined plates 25 can be designed according to the simulation results. For example, the inclination angles of the multiple guide mesh inclined plates 25 can be designed to be equal; or the inclination angles of at least two of the multiple guide mesh inclined plates 25 can be designed to be different.

[0076] Optionally, see Figures 2 to 4 In this embodiment, the inclination angles of the multiple guide mesh inclined plates 25 are not equal. For example, the inclination angle of the first guide mesh inclined plate 25a is 21.63°, the inclination angle of the second guide mesh inclined plate 25b is 32.47°, the inclination angle of the third guide mesh inclined plate 25c is 60.26°, and the inclination angle of the fourth guide mesh inclined plate 25d is 45.29°.

[0077] As described above, the opening spacing of the guide mesh plate 26 is greater than the opening spacing of the plurality of guide mesh inclined plates 25, and the opening spacing of any two guide mesh inclined plates 25 in the plurality of guide mesh inclined plates 25 can be designed to be equal or unequal according to the simulation results. Figure 2 , Figure 3 and Figure 5 In this embodiment, the spacing between the second ventilation holes 24 on the first guide mesh inclined plate 25 is equal to the spacing between the second ventilation holes 24 on the third guide mesh inclined plate 25. For example, the opening spacing of the first guide mesh inclined plate 25a and the opening spacing of the third guide mesh inclined plate 25c are both 8 mm.

[0078] Optionally, see Figure 2 , Figure 4 and Figure 5 In this embodiment, the spacing between the second ventilation holes 24 on the second guide mesh inclined plate 25 is equal to the spacing between the second ventilation holes 24 on the fourth guide mesh inclined plate 25. For example, the opening spacing of the second guide mesh inclined plate 25b and the opening spacing of the fourth guide mesh inclined plate 25d are both 9 mm.

[0079] Optionally, see Figures 3 to 5 In this embodiment, the spacing between the second ventilation holes 24 on the second guide mesh inclined plate 25 is not equal to the spacing between the second ventilation holes 24 on the first guide mesh inclined plate 25. For example, the opening spacing of the first guide mesh inclined plate 25a is 8 mm, while the opening spacing of the second guide mesh inclined plate 25b is 9 mm.

[0080] Specifically, the static pressure box 100 is designed with five mesh plates having different hole spacings, so that the five mesh plates can play different guiding roles on the airflow at different positions according to the air volume of the airflow at different positions.

[0081] The static pressure box 100 reduces the size of the openings of the mesh plates to make the airflow through the mesh plates more uniform; five mesh plates are welded together, and the optimal data results are obtained after simulation, and the optimal angle is set to facilitate flow guidance; by setting the opening sizes and hole spacings of the mesh plates at different positions to be different, different flow guidance effects can be achieved for the airflow at different positions, thereby improving the uniformity of the airflow.

[0082] The utility model also provides an oven, which may be a tunnel oven, etc. The oven includes a static pressure box. Since the static pressure box adopts the technical solution of the above embodiment, it has the beneficial effects brought by the technical solution of the above embodiment. Figure 8 A preferred embodiment of the oven provided by the utility model is shown.

[0083] See also Figure 8 In this embodiment, the oven 1000 includes a box body 300 and an air supply device 200, and a conveying device 400 is provided in the box body 300; the air supply device 200 is arranged in the box body 300, and the air supply device 200 is used to blow air to the objects (i.e., the bottles) on the conveying device 400, and the air supply device 200 is provided with a static pressure box 100.

[0084] Specifically, the air supply device 200 includes a static pressure box 100 , a fan 210 , a high-efficiency filter 240 , a flow equalizing plate 250 and a deflector 260 , and an air outlet (not shown in the figure) of the air supply device 200 is located on the upper side of the conveying device 400 .

[0085] The air outlet of the fan 210 is connected to the air inlet 11 of the static pressure box 100 through the air duct 220, two high-efficiency filters 240 are arranged at the air outlet 12 of the static pressure box 100, and the air supply device 200 has two high-efficiency filters 240 arranged at two air outlets respectively. Two flow equalizing plates 250 are respectively installed at the two air outlets of the air supply device 200, and the deflector 260 is installed between the two air outlets of the air supply device 200, and the deflector 260 is located on the lower side of the two air outlets of the air supply device 200.

[0086] When the oven 1000 is working, the fan 210 extracts air, and after pressurization, it is sent to the static pressure box 100 through the air duct 220. The airflow sent to the static pressure box 100 first passes through a plurality of guide mesh inclined plates 25 and guide mesh flat plates 26. Because the opening size and opening spacing of the mesh plate of the static pressure box 100 are different, it is the optimal result after simulation, so that the airflow blown out of the static pressure box 100 can be evenly distributed. Then it passes through the high-efficiency filter 240 and the equalizing plate 250 and blows out from the two air outlets of the air supply device 200. It is guided by the inverted cone-shaped deflector 260 between the two air outlets of the air supply device 200, which increases the flow rate of the airflow between the two air outlets of the air supply device 200, avoids the generation of turbulence, and allows the airflow to be evenly blown to the bottle body on the conveying device 400.

[0087] Optionally, see Figure 8 In this embodiment, a return air box 500 is installed at the lower side of the conveying device 400, and an air collecting tube 230 is installed at the air inlet of the fan 210.

[0088] Specifically, an air circulation channel is formed in the oven 1000, and the return air box 500 and the air collecting tube 230 are both arranged in the air circulation channel. After the air flow from the air supply device 200 processes the bottles on the conveying device 400, it passes through the return air box 500 and the air collecting tube 230 in sequence and then returns to the air inlet of the fan 210, and then blows to the next batch of bottles after passing through the fan 210.

[0089] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A static pressure box, characterized in that: include: A main body is surrounded to form a channel, one end of the main body is provided with an air inlet, and the other end is provided with an air outlet, and the channel connects the air inlet and the air outlet; The air guide portion is at least partially arranged in the channel, and the air guide portion cover is arranged at the air inlet; the air guide portion includes a central area and a peripheral area connected to each other, the central area is provided with a plurality of first ventilation holes, and the peripheral area is provided with a plurality of second ventilation holes, and the average diameter of the plurality of first ventilation holes is greater than the average diameter of the plurality of second ventilation holes.

2. The static pressure box according to claim 1, characterized in that An average spacing between the plurality of first ventilation holes is greater than an average spacing between the plurality of second ventilation holes.

3. The static pressure box according to claim 1, characterized in that The intervals between the plurality of first ventilation holes are gradually increased in a direction from the edge to the center of the central area.

4. The static pressure box according to claim 1, characterized in that The diameters of the plurality of first ventilation holes are equal; and / or, The diameters of the plurality of first ventilation holes do not exceed 5 mm; and / or, The diameters of the plurality of second ventilation holes are equal; and / or, The diameters of the plurality of second ventilation holes do not exceed 5 mm.

5. The static pressure box according to any one of claims 1 to 4, characterized in that: The peripheral area includes a plurality of guide mesh inclined plates, the plurality of second ventilation holes are arranged on the plurality of guide mesh inclined plates, the plurality of guide mesh inclined plates are connected in sequence along the circumference of the air inlet, the same end of the plurality of guide mesh inclined plates is connected to the main body, and the plurality of guide mesh inclined plates are arranged gradually approaching each other in the direction from the air inlet to the air outlet.

6. The static pressure box according to claim 5, characterized in that The central area includes a guide mesh plate, which is arranged toward the air inlet and is sealingly arranged at one end of the multiple guide mesh inclined plates away from the air inlet. The multiple first ventilation holes are arranged on the guide mesh plate.

7. The static pressure box according to claim 5, characterized in that The inclination angles of at least two of the plurality of guide mesh inclined plates are different.

8. The static pressure box according to claim 5, characterized in that The spacing between the second ventilation holes on any one of the guide mesh inclined plates is equal; and / or, There are four guide mesh inclined plates, and the four guide mesh inclined plates include a first guide mesh inclined plate, a second guide mesh inclined plate, a third guide mesh inclined plate, and a fourth guide mesh inclined plate which are connected in sequence.

9. The static pressure box according to claim 8, characterized in that The spacing between the second ventilation holes on the first guide mesh inclined plate is equal to the spacing between the second ventilation holes on the third guide mesh inclined plate; and / or, The spacing between the second ventilation holes on the second guide mesh inclined plate is equal to the spacing between the second ventilation holes on the fourth guide mesh inclined plate; and / or, The spacing between the second ventilation holes on the second guide mesh inclined plate is not equal to the spacing between the second ventilation holes on the first guide mesh inclined plate.

10. An oven, characterized in that: include: A box body, wherein a conveying device is arranged inside the box body; An air supply device, wherein the air supply device is disposed in the box body, and the air supply device is used to blow air toward objects on the conveying device. The air supply device is provided with a static pressure box as described in any one of claims 1-9.

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