Suction cooling fan

Abstract

The application discloses a suction type cooling air bellow, which comprises a right suction bellow body and a left suction bellow body arranged on the two sides of a belt surface material respectively, a plurality of right air jet assemblies and a plurality of right air suction assemblies arranged on the side wall of the right suction bellow body corresponding to the belt surface material from top to bottom, and the right air jet assemblies and the right air suction assemblies are arranged alternately from top to bottom; a plurality of left air jet assemblies and a plurality of left air suction assemblies arranged on the side wall of the left suction bellow body corresponding to the belt surface material from top to bottom, and the left air jet assemblies and the left air suction assemblies are arranged alternately from top to bottom; a right refrigerant supply pipeline and a right hot air exhaust pipeline arranged in the right suction bellow body and communicated with the right air jet assemblies and the right air suction assemblies respectively; and a left refrigerant supply pipeline and a left hot air exhaust pipeline arranged in the left suction bellow body and communicated with the left air jet assemblies and the left air suction assemblies respectively.

Description

Technical Field

[0001] This invention relates to the field of cooling equipment for sheet materials, and particularly to a suction-type cooling fan box. Background Technology

[0002] Cooling of surface materials typically uses a cooling air box with slit or nozzle type nozzles. The blowing cooling gas acts on the surface of the surface material to cool it. The cooled hot air dissipates with the pressure of the subsequent cooling air, but the cooled high-temperature air will flow back to the inlet of the cooling gas. As the cooling air mixes with the hot air, the temperature of the cooling air increases and the cooling effect decreases. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a suction-type cooling air box.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] The suction-type cooling fan box includes:

[0006] The right and left suction boxes are respectively located on both sides of the surface material;

[0007] Several right jet components and several right suction components are arranged from top to bottom on the side wall of the right suction box corresponding to the surface material, and the right jet components and right suction components are arranged alternately up and down;

[0008] Several left jet components and several left suction components are arranged from top to bottom on the side wall of the left suction box corresponding to the surface material, and the left jet components and left suction components are arranged alternately up and down;

[0009] The right refrigerant supply pipe and the right hot air exhaust pipe are located inside the right suction box and are connected to the right jet assembly and the right suction assembly, respectively.

[0010] The left refrigerant supply pipe and the left hot air exhaust pipe are located inside the left suction box and are connected to the left jet assembly and the left suction assembly, respectively.

[0011] When the plurality of right jet components and the plurality of right air intake components are arranged alternately in a vertical arrangement, the uppermost and lowermost sides are both designated as right air intake components; when the plurality of left jet components and the plurality of left air intake components are arranged alternately in a vertical arrangement, the uppermost and lowermost sides are both designated as left air intake components.

[0012] The number of right intake assemblies is greater than the number of right jet assemblies, and the number of left intake assemblies is greater than the number of left jet assemblies.

[0013] The right jet assembly includes:

[0014] The lower nozzle is a horizontally arranged cylindrical cavity, with both ends sealed by nozzle end caps and nozzle fixing bolts. Its inner side is the inlet end, which is connected to the air jet port of the right suction box and is also connected to the right refrigerant supply pipeline.

[0015] The upper nozzle is located at the outlet end of the lower nozzle, and the outlet end of the upper nozzle is the nozzle gas outlet.

[0016] Two nozzle mounting plates are respectively set on the upper and lower sides of the cylindrical cavity;

[0017] The nozzle mounting end cap is vertically installed on one side of the nozzle end cap and is fixedly connected to the same end of the two nozzle mounting plates;

[0018] The nozzle positioning and fixing end is set on the nozzle end cover corresponding to the nozzle mounting end cover of the cylindrical cavity, and is connected to the nozzle mounting end cover by the nozzle fixing pin;

[0019] The structure of the right jet assembly is the same as that of the left jet assembly.

[0020] The width of the lower nozzle outlet is h4, and the width of the upper nozzle outlet is h3, where h3 > h4. Under the condition that the height of h4 does not change, h3 is adjusted to be within the range of 1°-50° for the included angle b. The larger the included angle b, the narrower the width of the cooling air acting on the surface material. Conversely, the smaller the included angle b, the wider the width of the cooling air acting on the surface material.

[0021] The left intake assembly includes:

[0022] The lower suction nozzle is a horizontally arranged cylindrical cavity, with both ends sealed by suction nozzle end caps and suction nozzle fixing bolts. Its inner side is the outlet end, which is connected to the air inlet of the left suction box and connected to the left hot air exhaust pipe.

[0023] The upper suction nozzle is located at the inlet end of the lower suction nozzle, and the inlet end of the upper suction nozzle is the gas inlet of the suction nozzle;

[0024] Two suction nozzle mounting plates are respectively set on the upper and lower sides of the cylindrical cavity;

[0025] The nozzle mounting end cap is vertically installed on one side of the nozzle end cap and is fixedly connected to the same end of the two nozzle mounting plates;

[0026] The nozzle positioning and fixing end is set on the nozzle end cover of the cylindrical cavity, which corresponds to the nozzle mounting end cover, and is connected to the nozzle mounting end cover by a nozzle fixing pin.

[0027] The structure of the left intake assembly is the same as that of the right intake assembly.

[0028] The width of the inlet end of the lower suction nozzle is h1, and the width of the inlet end of the upper suction nozzle is h2, where h2 > h1. Under the condition that the height of h2 does not change, h1 is adjusted to be within the range of 1°-55° of the included angle α. The larger the included angle α, the wider the negative pressure area formed on the surface material. Conversely, the smaller the included angle α, the narrower the negative pressure area formed on the surface material.

[0029] The length of the upper nozzle is greater than the length of the upper suction nozzle; the lower nozzle can rotate with the nozzle positioning and fixing end, so that the upper nozzle can rotate up and down; the lower suction nozzle can rotate with the suction nozzle positioning and fixing end, so that the upper suction nozzle can rotate up and down.

[0030] The left hot gas exhaust pipe includes:

[0031] The left hot air duct is horizontally positioned at the top of the left exhaust fan housing;

[0032] The left hot air duct vertical pipe has an air outlet at the top that connects to the left hot air duct.

[0033] Several horizontally placed hot air collection pipes are distributed from top to bottom in the left exhaust box, and the inlet end of each hot air collection pipe is connected to a left air intake component, and the outlet end is connected to the left hot air pipe vertical pipe.

[0034] The left hot gas exhaust pipe has the same structure as the right hot gas exhaust pipe.

[0035] The left refrigerant supply pipeline includes:

[0036] The left-side cold air duct is horizontally positioned at the top of the suction box.

[0037] The left-side cold air duct vertical pipe has an air inlet at the top that connects to the left-side cold air duct.

[0038] Several horizontally placed air supply ducts are distributed from top to bottom in the left exhaust air box, and the outlet end of each air supply duct is connected to a left jet assembly, while the inlet end is connected to the vertical pipe of the left cold air duct.

[0039] The right refrigerant supply pipe and the right hot air exhaust pipe in the right exhaust fan box are both made of heat-insulating material; the left refrigerant supply pipe and the left hot air exhaust pipe in the left exhaust fan box are both made of heat-insulating material, which can effectively prevent the hot air from affecting the refrigerant.

[0040] The beneficial effects of this invention are:

[0041] 1. This invention adds an air intake function. Structurally, it uses a long nozzle and a short air intake mouthpiece to carry away a large amount of cooled hot airflow according to the law of air flow, reducing the secondary impact of hot gas on cold gas, improving the cooling efficiency of the suction cooling box, and reducing the power and volume of the cooling box. It becomes possible to install a cooling device with a large cooling capacity in the same small space, and provides more options and creates more process conditions when equipment modification or installation space is limited.

[0042] 2. Arrange the same suction cooling box on both sides of the surface material. The cooling nozzle of the suction cooling box is longer than the suction nozzle. The nozzle and suction nozzle can be slit type or pipe type.

[0043] 3. The number of nozzles and suction nozzles in a suction-type cooling air box mainly depends on the specific height and gap of the air box and the cooling effect of the cooling belt surface material. Usually, the number of suction nozzles is greater than the number of nozzles. The number of suction nozzles covers the hot airflow after heat exchange of the gas from the cooling nozzles, and the entire hot airflow is drawn out through the negative pressure range of the suction nozzles.

[0044] 4. The hot air duct and the cooling gas duct of the suction cooling air box should be insulated. The adjacent length of the cooling air duct and the hot air duct should be as short as possible. If necessary, heat insulation plates or heat insulation materials should be installed to fill the remaining space between the two ducts.

[0045] 5. The hot air duct adopts a multi-layer horizontal design, consisting of a base layer, an intermediate filling layer, and an outermost protective layer. The intermediate filling layer uses aerogel felt as an ideal filling material, and the aerogel felt has good heat insulation effect.

[0046] 6. The nozzles and suction nozzles of the suction-type cooling air box are arranged in an alternating pattern to remove the generated hot airflow in the shortest possible time. The negative pressure zone generated by the suction nozzle is located on both sides of the hot air generated after the airflow from the nozzle is cooled, which removes the hot air from both sides of the surface material as much as possible and reduces the impact of hot air on the cold air.

[0047] 7. The nozzles and suction nozzles of the suction-type cooling air box can be arranged with the suction nozzles on the outermost side. In comparison, arranging the suction nozzles on the outermost side results in better absorption of hot airflow and less impact on the surrounding environment. If there are no special requirements for the working environment, the nozzles can also be arranged on the outermost side.

[0048] 8. The effective distance and length of the alternating arrangement of the suction-type cooling air boxes conform to the aerodynamic gas flow direction and flow rate design, which improves the cooling capacity and efficiency of the middle part of the surface material.

[0049] 9. The nozzle pressure of the suction-type cooling air box must be greater than the suction nozzle pressure. In order to ensure the temperature reduction of the strip material surface, it must have sufficient cooling capacity and cooling rate to ensure the basic cooling capacity and remaining operational capacity of the strip material, and facilitate abnormal adjustment under abnormal conditions. The parameter that the suction nozzle pressure is less than the nozzle pressure is to cool the high-temperature strip material through the cooling nozzle and draw away the hot air after heat exchange, to prevent the temperature of the cooling air from rising and affecting the cooling rate of the strip material. The suction nozzle should not affect the cooling gas sprayed by the cooling nozzle that has not acted on the strip material. If the gas that has not participated in the cooling of the strip material is drawn away by the suction nozzle, it directly reduces and loses the innovative point of increasing the suction nozzle function. Therefore, it is important to reasonably allocate the pressure and flow rate of the nozzle and suction nozzle.

[0050] 10. The hot airflow drawn in by the suction nozzle of the suction-type cooling air box can also be used for preheating and can be used as a direct air source for hot air drying equipment, reducing the consumption of steam heat exchange, improving energy utilization, and saving energy media.

[0051] 11. Suction-type cooling air boxes are particularly effective in post-galvanizing cooling of hot-dip galvanizing units, especially in summer when the required air volume for post-galvanizing cooling is large and the ambient temperature at the work site is high, especially when producing thicker specifications. By using suction-type cooling air boxes to remove hot air, the temperature of the working environment can be significantly improved, allowing the fans, reducers, and motors that operate at high temperatures to operate at normal temperatures. This increases equipment lifespan and maintenance cycles, reduces maintenance costs, and decreases maintenance time. At the same time, it improves the working environment for equipment inspectors and operators in this area, thus fundamentally improving inherent safety.

[0052] 12. The suction cooling box uses a forced suction mode with a fan to create negative pressure at the suction port.

[0053] 13. The suction-type cooling air box can use nitrogen as the medium. With the reasonable design of the suction type, nitrogen leakage is minimized. The heat exchange mode can be used to circulate the sucked-in hot nitrogen, reducing nitrogen consumption and the risk of asphyxiation to surrounding personnel, ensuring personal safety and reducing operating costs.

[0054] 14. The nozzle of the suction-type cooling air box has a narrow end contraction structure. After the pressure inside the air collection chamber is equalized, it is sprayed out through the nozzle. The narrow end contraction structure has an inclined section inside. The inclined section keeps the flow and pressure of the sprayed air more uniform and directional, so that the sprayed gas does not become diffuse, uneven or disordered after leaving the nozzle.

[0055] 15. The suction-type cooling air box has a suction nozzle with an externally expanding and internally gradually converging shape. The externally expanding shape makes it easier to collect more dissipated hot air, and the internally gradually converging shape of the nozzle provides sufficient suction to draw more hot air into the air collection chamber for discharge.

[0056] 16. The cooling pipes and hot air pipes of the suction-type cooling air box are installed inside a sealed air box to prevent the temperature of the air supply system from being disturbed when it reaches the cooling nozzles and suction nozzles, thus reducing the working capacity and efficiency of the suction-type cooling air box.

[0057] 17. The cooling air source pipe and hot air extraction pipe of the suction-type cooling air box are respectively placed on both sides of the sealed air box to prevent the temperature of the air supply pipe and the air intake pipe from interfering with each other.

[0058] 18. The design and structure of the nozzles in the suction-type cooling air box can be changed by replacing the nozzle bracket to adapt to different production varieties. Attached Figure Description

[0059] Figure 1 This is the online main view of the suction-type cooling fan box;

[0060] Figure 2 This is an online top view of a suction-type cooling fan box;

[0061] Figure 3 This is a left-line view of a suction-type cooling fan box;

[0062] Figure 4 This is an online isometric view of a suction-type cooling fan box;

[0063] Figure 5 This is the front view of the left exhaust fan box;

[0064] Figure 6 This is a top view of the left exhaust fan box;

[0065] Figure 7 This is a left view of the left exhaust fan box;

[0066] Figure 8 This is a side view of the left suction box;

[0067] Figure 9 This is a vertical sectional view of the left suction box of AA;

[0068] Figure 10 This is a horizontal sectional view of the left exhaust fan box of BB;

[0069] Figure 11 This is an auxiliary sectional view of the CC left exhaust fan box;

[0070] Figure 12 This is an isometric view of the left exhaust fan duct.

[0071] Figure 13 This is the main view of the nozzle;

[0072] Figure 14 This is a top view of the nozzle;

[0073] Figure 15 This is the left view of the nozzle;

[0074] Figure 16 It is an isometric view of the nozzle;

[0075] Figure 17 This is the front view of the suction nozzle;

[0076] Figure 18 This is a top view of the suction nozzle;

[0077] Figure 19 This is a left view of the suction nozzle;

[0078] Figure 20 It is an isometric view of the suction nozzle;

[0079] Figure 21 This is a schematic diagram of the gas flow direction when the suction nozzle and nozzle are working;

[0080] Figure 22 This is a schematic diagram showing the height and angle of the suction nozzle and nozzle cavity, and the distance between the surface material;

[0081] in:

[0082] 1-Right suction box;

[0083] 101-Right No. 1 nozzle;

[0084] 102-Right 1# nozzle;

[0085] 103-Right No. 2 nozzle;

[0086] 104-Right 2# suction nozzle;

[0087] 105-Right No. 3 nozzle;

[0088] 106-Right 3# suction nozzle;

[0089] 107-Right No. 4 nozzle;

[0090] 108 - Right hot air duct;

[0091] 109 - Right-side cold air duct;

[0092] 1010 - Right suction box housing;

[0093] 1011 - Nozzle end cap;

[0094] 1012 - Nozzle fixing bolt;

[0095] 1013 - Upper nozzle;

[0096] 1014 - Nozzle gas outlet;

[0097] 1015 - Lower nozzle;

[0098] 1016 - Nozzle retaining pin;

[0099] 1017 - Nozzle mounting plate;

[0100] 1018 - Nozzle mounting end cap;

[0101] 1019 - Nozzle positioning and fixing end;

[0102] 2-Left exhaust fan box;

[0103] 201-Left No. 1 nozzle;

[0104] 202-Left 1# suction nozzle;

[0105] 2021 - Left #1 nozzle tip;

[0106] 2022 - Direction of hot air flow drawn in by nozzle #1 (left);

[0107] 20101 - Left No. 1 nozzle tip;

[0108] 20102 - Cooling airflow direction from nozzle #2 on the left;

[0109] 203-Left No. 2 nozzle;

[0110] 2031 - Left No. 2 nozzle tip;

[0111] 2032 - Cooling airflow direction ejected from nozzle #1 on the left;

[0112] 204 - Left 2# suction nozzle;

[0113] 205 - Left No. 3 nozzle;

[0114] 206 - Left 3# suction nozzle;

[0115] 207-Left No. 4 nozzle;

[0116] 208 - Left hot air duct;

[0117] 2081-Left hot air duct riser;

[0118] 2082-Left 3# Suction Nozzle Hot Air Collection Pipeline;

[0119] 2083-Left No. 2 suction nozzle hot air collection pipe;

[0120] 2084-Left No. 1 Suction Nozzle Hot Air Collection Pipeline;

[0121] 209 - Left-side cold air duct;

[0122] 2091 - Left cold air duct riser;

[0123] 2092-Left No. 4 Nozzle Air Supply Pipeline;

[0124] 2093-Left No. 3 Nozzle Air Supply Pipeline;

[0125] 2094 - Left No. 2 nozzle air supply pipeline;

[0126] 2095-Left No. 1 Nozzle Air Supply Pipeline;

[0127] 2010 - Left suction box housing;

[0128] 2011 - Suction nozzle end cap;

[0129] 2012 - Suction nozzle fixing bolts;

[0130] 2013 - Top suction nozzle;

[0131] 2014 - Suction nozzle gas inlet;

[0132] 2015 - Lower suction nozzle;

[0133] 2016 - Suction nozzle retaining pin;

[0134] 2017 - Nozzle Mounting Plate;

[0135] 2018 - Install end cap on the nozzle;

[0136] 2019 - Nozzle positioning and fixing end;

[0137] 3-Surface material;

[0138] S - Distance between the nozzle and the surface material;

[0139] S1 - Distance between the nozzle and the surface material;

[0140] a- Angle of the nozzle's inner cavity;

[0141] b - Angle of the nozzle cavity;

[0142] h1 - Width of the nozzle cavity outlet;

[0143] h2 - Width of the inlet within the nozzle cavity;

[0144] h3 - Width of the nozzle cavity inlet;

[0145] h4 - the width of the nozzle cavity outlet. Detailed Implementation

[0146] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0147] like Figure 1 , Figure 3 and Figure 4 As shown, the suction-type cooling air box includes: a right suction air box body 1 and a left suction air box body 2, respectively disposed on both sides of the surface material 3; a plurality of right jet assemblies and a plurality of right suction assemblies are disposed from top to bottom on the side wall of the right suction air box body 1 corresponding to the surface material 3, and the right jet assemblies and right suction assemblies are arranged alternately up and down; a plurality of left jet assemblies and a plurality of left suction assemblies are disposed from top to bottom on the side wall of the left suction air box body 2 corresponding to the surface material 3, and the left jet assemblies and left suction assemblies are arranged alternately up and down; right The refrigerant supply pipe and the right hot gas exhaust pipe are located inside the right exhaust fan housing 1 and are connected to the right jet assembly and the right intake assembly, respectively. The left refrigerant supply pipe and the left hot gas exhaust pipe are located inside the left exhaust fan housing 2 and are connected to the left jet assembly and the left intake assembly, respectively. The pipes of the right refrigerant supply pipe and the right hot gas exhaust pipe inside the right exhaust fan housing 1 are made of heat-insulating material. The pipes of the left refrigerant supply pipe and the left hot gas exhaust pipe inside the left exhaust fan housing 2 are also made of heat-insulating material, which can effectively prevent the hot gas from affecting the refrigerant.

[0148] like Figure 2 , Figure 5 , Figure 6 , Figure 8 and Figure 12 As shown, when several right jet components and several right air intake components are arranged alternately up and down, the uppermost and lowermost sides are both set as right air intake components; when several left jet components and several left air intake components are arranged alternately up and down, the uppermost and lowermost sides are both set as left air intake components, the number of right air intake components is greater than the number of right jet components, and the number of left air intake components is greater than the number of left jet components.

[0149] like Figures 13 to 16As shown, the right jet assembly includes: a lower nozzle 1015, which is a horizontally arranged cylindrical cavity, both ends of which are closed by nozzle end caps 1011 and nozzle fixing bolts 1012. Its inner side is the inlet end, which is connected to the jet port of the right suction box 1 and is connected to the right refrigerant supply pipeline; an upper nozzle 1013, which is set on the outlet end of the lower nozzle 1015, and the outlet end of the upper nozzle 1013 is the nozzle gas outlet 1014; two nozzle mounting plates 1017, which are respectively set on the upper and lower sides of the cylindrical cavity; a nozzle mounting end cap 1018, which is vertically set on one side of the nozzle end cap 1011 and fixedly connected to the same end of the two nozzle mounting plates 1017; and a nozzle positioning and fixing end 1019, which is set on the nozzle end cap 1011 of the cylindrical cavity corresponding to the nozzle mounting end cap 1018, and is connected to the nozzle mounting end cap 1018 by a nozzle fixing pin 1016; wherein, the structure of the right jet assembly is the same as that of the left jet assembly.

[0150] like Figure 22 As shown, the width of the outlet end of the lower nozzle 1015 is h4, and the width of the outlet end of the upper nozzle 1013 is h3, where h3 > h4. Under the condition that the height of h4 does not change, the range of the included angle b is adjusted to be between 1° and 50°. The larger the included angle b, the narrower the width of the cooling air acting on the surface material 3. Conversely, the smaller the included angle b, the wider the width of the cooling air acting on the surface material 3.

[0151] like Figures 17 to 20 As shown, the left suction assembly includes: a lower suction nozzle 2015, which is a horizontally arranged cylindrical cavity, both ends of which are sealed by suction nozzle end caps 2011 and suction nozzle fixing bolts 2012. Its inner side is the outlet end, which is connected to the air inlet of the left suction box 2 and is also connected to the left hot air exhaust pipe; an upper suction nozzle 2013, which is set on the inlet end of the lower suction nozzle 2015, and the inlet end of the upper suction nozzle 2013 is the suction nozzle gas inlet 2014; two suction nozzle mounting plates 2017, which are respectively set on the upper and lower sides of the cylindrical cavity; and a suction nozzle mounting end cap 2018, which is vertically set on one side of the suction nozzle end cap 2011 and connected to the two suction nozzle mounting plates 2015. 7 is fixedly connected at the same end; the suction nozzle positioning and fixing end 2019 is set on the suction nozzle end cover 2011 corresponding to the suction nozzle mounting end cover 2018 in the cylindrical cavity, and is connected to the suction nozzle mounting end cover 2018 through the suction nozzle fixing pin 2016; wherein, the structure of the left suction assembly is the same as that of the right suction assembly, and the length of the upper nozzle 1013 is greater than the length of the upper suction nozzle 2013; the lower nozzle 1015 can rotate with the nozzle positioning and fixing end 1019, so that the upper nozzle 1013 can rotate up and down; the lower suction nozzle 2015 can rotate with the suction nozzle positioning and fixing end 2019, so that the upper suction nozzle 2013 can rotate up and down.

[0152] like Figure 22As shown, the width of the inlet end of the lower suction nozzle 2015 is h1, and the width of the inlet end of the upper suction nozzle 2013 is h2, where h2 > h1. Under the condition that the height of h2 does not change, the range of the included angle α is adjusted to be between 1° and 55°. The larger the included angle α, the wider the negative pressure area formed on the surface material 3. Conversely, the smaller the included angle α, the narrower the negative pressure area formed on the surface material 3.

[0153] like Figures 1 to 12 As shown, the left hot air exhaust pipe includes: a left hot air pipe 208, which is horizontally placed at the top of the left suction box 2; a left hot air pipe vertical pipe 2081, with its top air outlet connected to the left hot air pipe 208; and several horizontally placed hot air collection pipes, distributed from top to bottom inside the left suction box 2, with the inlet end of each hot air collection pipe connected to a left suction assembly and the outlet end connected to the left hot air pipe vertical pipe 2081; wherein, the left hot air exhaust pipe has the same structure as the right hot air exhaust pipe.

[0154] like Figures 1 to 12 As shown, the left refrigerant supply pipeline includes: a left cold air pipeline 209, which is horizontally placed at the top of the suction box 2; a left cold air pipeline vertical pipe 2091, with its top air inlet connected to the left cold air pipeline 209; and several horizontally placed air supply pipelines distributed from top to bottom inside the left suction box 2, with each air supply pipeline having its outlet end connected to a left jet assembly and its inlet end connected to the left cold air pipeline vertical pipe 2091.

[0155] Specifically, in combination Figure 1 , 2Views 3 and 4 are shown in the online three-view drawing and isometric view of the suction cooling fan box. The arrangement of this invention involves symmetrically arranging a right suction fan box 1 and a left suction fan box 2 on both sides of the surface material 3 requiring cooling on a high-speed production line to cool the surface material 3. A safe distance of 30-300mm exists between the right suction fan box 1 and the left suction fan box 2 and the surface material 3. Multiple right jet components, right suction components, left jet components, and left suction components, each larger than the width of the surface material 3, are arranged on both the right suction fan box 1 and the left suction fan box 2. The high-temperature surface material 3 is cooled by heat exchange with the right suction fan box 1 and the left suction fan box 2, ultimately achieving the required temperature control. Specifically, the sealed right suction fan box shell 1010 of the right suction fan box 1 is equipped with a right hot air exhaust pipe and a right refrigerant supply pipe, specifically a right hot air pipe 108 and a right cold air pipe 108. Pipe 109, and the right jet assembly specifically consists of right #1 nozzle 101, right #2 nozzle 103, right #3 nozzle 105, and right #4 nozzle 107; the right suction assembly specifically consists of right #1 suction nozzle 102, right #2 suction nozzle 104, and right #3 suction nozzle 106; right hot air pipe 108 connects to right #1 suction nozzle 102, right #2 suction nozzle 104, and right #3 suction nozzle 106; right cold air pipe 109 connects to right #1 nozzle 101, right #2 nozzle 103, right #3 nozzle 105, and right #4 nozzle 107. (See attached diagram.) Figure 3 It can be seen that the right hot air duct 108 and the right cold air duct 109 are supplied with air separately and independently. Cooling gas is sprayed by the right cold air duct 109. After the gas comes into contact with the surface of the belt material, it carries away the high temperature emitted by the surface of the belt material and exchanges the heat of the cooling gas into hot air. The hot air that escapes turns over the surface of the belt material and flows in the direction of least air resistance of the cooling nozzle. The suction function provided by the right hot air duct 108 makes the ends of the right #1 suction nozzle 102, right #2 suction nozzle 104, and right #3 suction nozzle 106 form a negative pressure area. Similar to the right suction box 1, the sealed left suction box housing 2010 of the left suction box 2 is equipped with a left hot air exhaust pipe and a left refrigerant supply pipe, specifically a left hot air pipe 208 and a left cold air pipe 209. The left jet assembly specifically consists of left #1 nozzle 201, left #2 nozzle 203, left #3 nozzle 205, and left #4 nozzle 207. The left suction assembly specifically consists of left #1 suction nozzle 202, left #2 suction nozzle 204, and left #3 suction nozzle 206. The left hot air pipe 208 connects to left #1 suction nozzle 202, left #2 suction nozzle 204, and left #3 suction nozzle 206. The left cold air pipe 209 connects to left #1 nozzle 201, left #2 nozzle 203, left #3 nozzle 205, and left #4 nozzle 207. (See attached diagram.) Figure 3It can be seen that the left hot air duct 208 and the left cold air duct 1209 are supplied with air separately and independently. The left cold air duct 209 sprays cooling gas. After the gas comes into contact with the surface of the belt material, it carries away the high temperature emitted by the surface of the belt material and exchanges the cooling gas into hot air. The hot air that escapes turns over the surface of the belt material and flows in the direction of least air resistance of the cooling nozzle. The suction function provided by the left hot air duct 208 makes the ends of the left #1 suction nozzle 202, left #2 suction nozzle 204, and left #3 suction nozzle 206 form a negative pressure area.

[0156] The main pipes of the right hot air duct 108 and the right cold air duct 109 of the right exhaust fan box 1 and the left hot air duct 208 and the left cold air duct 209 of the other set of left exhaust fan box 2 are all designed at the top of the overall fan box in the present invention. The present invention is not limited to the design of the main pipes being below or to the side of the overall airflow direction.

[0157] The right suction box 1 and left suction box 2 of this invention have suction functions, and conventional structures use a long nozzle and a short suction nozzle, as shown in the reference. Figure 5 For example, right #1 suction nozzle 102, right #2 suction nozzle 104, and right #3 suction nozzle 106 draw away the hot air that has been expelled from left #1 suction nozzle 202, left #2 suction nozzle 204, and left #3 suction nozzle 206 after heat exchange on the surface material. According to the law of air flow, a large amount of cooled hot air is drawn away by negative pressure, reducing the secondary impact of the hot gas after heat exchange on the cooling gas ejected from the nozzles, improving the overall cooling efficiency of the suction cooling box, reducing the power and volume of the cooling box, and making it possible to install cooling equipment with a larger cooling capacity in the same small space. In the case of equipment modification or limited installation space, there are more equipment options and more room for process condition control.

[0158] The suction cooling air box is located on both sides of the surface material. The right suction air box body 1 and the left suction air box body 2 with the same structure are arranged respectively. The nozzles and suction nozzles can be slit type or pipe type. The number of nozzles is at least more than 2 and the number of suction nozzles is at least two. They are alternately arranged on the entire surface of the air box body. The cooling gas ejected from the nozzles and the suction inlet of the suction nozzles are perpendicular to the cooling surface of the surface material.

[0159] The number of nozzles and suction nozzles in the right suction box 1 and the left suction box 2 of the present invention mainly depends on the overall height of the air box, the specific gap, and the cooling effect of the cooling belt surface material. Usually, the number of suction nozzles is greater than the number of nozzles. The number of suction nozzles covers the hot airflow after heat exchange of the gas cooling the nozzles, and all the hot airflow is drawn out through the negative pressure range of the suction nozzles.

[0160] The main arrangement of the right suction box 1 and the left suction box 2 of the present invention can be used with reference to the running direction of the surface material, and the upper and lower surfaces of the surface material can be horizontal, vertical or inclined.

[0161] refer to Figure 5 , 6 7 are the three views of the left suction box. Figure 8 This is an isometric view of the left suction fan box. The left suction fan box body 2 of the suction-type cooling fan box shows the following nozzles: left #1 nozzle 201, left #1 suction nozzle 202, left #2 nozzle 203, left #2 suction nozzle 204, left #3 nozzle 205, left #3 suction nozzle 206, and left #4 nozzle 207. It can be seen that the nozzles and suction nozzles are alternately arranged on the fan box, and both are installed on the same plane of the fan box. (Refer to...) Figure 5 As shown, the nozzles and suction nozzles are arranged alternately, and the distance between their centerlines ranges from 5-200mm. The actual working distance can be adjusted to ensure the suction nozzle effectively draws in cooling air. For a better illustration of the internal piping and connection structure between the suction-type cooling air box and the nozzles / suction nozzles, refer to... Figure 9 Vertical sectional view of the left exhaust fan box (AA) Figure 10 Horizontal section view of BB left exhaust fan box Figure 11 As shown in the auxiliary sectional view of the CC left suction box, left nozzle #1 201 is located at the bottom of the entire air box, and left nozzle #4 207 is located at the top of the air box. (Refer to...) Figure 9 and Figure 12 The hot air duct and the cooling gas duct of the suction cooling air box are insulated. The adjacent length of the cooling air duct and the hot air duct should be as short as possible. If necessary, heat insulation plates or heat insulation materials should be installed to fill the remaining space between the two ducts.

[0162] The hot air duct adopts a multi-layer horizontal design, consisting of a base layer, an intermediate filling layer, and an outermost protective layer. The intermediate filling layer uses aerogel felt as an ideal filling material, as the aerogel felt has good heat insulation properties. The left hot air duct vertical pipe 2081 is connected to the left hot air duct 208. The left hot air duct vertical pipe 2081 is connected to each of the left #1 suction nozzle 202, left #2 suction nozzle 204, and left #3 suction nozzle 206. The suction force of the left hot air duct 208 draws the hot air drawn in by these nozzles through the left hot air duct vertical pipe 2081, creating a negative pressure around the nozzles to draw away the heat-exchanged hot air.

[0163] The left cold air duct vertical pipe 2091 is connected to the left cold air duct 209. The left cold air duct vertical pipe 2091 is connected to each of the left #1 nozzle 201, left #2 nozzle 203, left #3 nozzle 205, and left #4 nozzle 207. The cooling air from the left cold air duct 209 is sent into the left cold air duct vertical pipe 2091 through the left cold air duct 209, and then sent into each nozzle to spray onto the surface of the material.

[0164] The left cold air duct vertical pipe 2091 and the left hot air duct vertical pipe 2081 are arranged inside the left suction box 2 of the suction-type cooling air box. The left cold air duct vertical pipe 2091 and the left hot air duct vertical pipe 2081 are arranged on both sides of the left suction box 2, keeping the left cold air duct vertical pipe 2091 and the left hot air duct vertical pipe 2081 at the maximum distance between the pipes inside the left suction box 2. This can maintain the heat exchange between the cold air duct and the hot air duct and prevent the cooling air from being affected by the hot air, which would reduce the cooling capacity. The gap between the connecting pipe of the nozzle and the cavity is filled with heat insulation material to prevent heat exchange. The two independent air supply pipes have sufficient safety distance and heat insulation material protection between them. The less hot air generated after the cooling air volume meets the cooling of the surface material, the more effectively the output of the suction nozzle air volume can be reduced, thus reducing energy consumption.

[0165] Figure 10 The horizontal sectional view of the BB left suction air box shows a cavity between the left cold air duct 209, the left cold air duct riser 2091, and the nozzle outside the air box. This cavity, with a shape consistent with the nozzle duct, is a flat, hollow structure designed to maintain pressure within the wall, ensuring stable flow and pressure at the nozzle and maximizing the cooling effect on the surface material. Similarly, the cavity between the left hot air duct riser 2081 and the suction nozzle is also a flat, hollow structure. This design facilitates installation, reduces size, shortens the distance between the nozzle and suction nozzle, and improves the cooling capacity and efficiency of the suction-type cooling air box.

[0166] like Figure 11 As shown in the auxiliary sectional view of the CC left suction air box, the pipe connection structure inside the left suction air box body 2 of the suction cooling air box is as follows: the pipe structure and layout of the left cold air pipe vertical pipe 2091 and the left hot air pipe vertical pipe 2081 are the same. The only difference is that the length of the two vertical pipes is determined by the number of nozzles and suction nozzles. The overall installation structure is to minimize pipe crossing and isolate the exchange of hot and cold energy inside the air box.

[0167] The nozzle is an important component of the suction-type cooling air box and a major cooling actuator for surface materials. Taking nozzle #1 (right) 101 as an example: Figure 13 , 14 15 Three-view drawings and Figure 16As shown in the isometric view, nozzle 101 on the right is a cooling nozzle cavity formed by the interconnection of upper nozzle 1013, lower nozzle 1015, and nozzle end cap 1011. The cooling nozzle cavity is fixed to the nozzle end cap 1011 by nozzle fixing bolt 1012. The cooling nozzle cavity is connected to nozzle mounting plate 1017, which is connected to nozzle mounting end cap 1018. Nozzle fixing pin 1016 is connected to nozzle mounting end cap 1018. The other end of the nozzle is fixed by nozzle positioning fixing end 1019. The cavity formed by upper nozzle 1013 and lower nozzle 1015 forms an open, non-closed cavity, which serves as the nozzle gas channel. Nozzle gas outlet 1014 is the only way for cooling gas to be ejected. Nozzle mounting plate 1017 is connected to the cooling air supply cavity above the air box. Nozzle gas outlet 1014 is a narrow slit. Cooling gas is pressurized within the non-closed cavity before being ejected, ensuring uniform gas flow across the surface of the strip material for cooling. Right No. 1# nozzle 101 is composed of multiple independent components, facilitating maintenance and replacement, reducing maintenance costs, and improving equipment availability. The right No. 1# nozzle 101 is installed facing the wind direction, allowing maintenance and replacement to be performed from the side of the air box. The nozzle gas outlet length is primarily determined by the width of the strip material, typically 1.2-1.7 times the width. The nozzle length must cover the maximum width of the strip material to ensure effective cooling. The nozzle gas outlet width is primarily determined by the maximum production line speed and the maximum thickness of the strip material, typically 1.1-2.5 times the thickness, ensuring sufficient cooling gas flow.

[0168] The suction nozzle is another part of the suction-type cooling air box that improves cooling capacity and efficiency, and it is also an essential component of the suction-type cooling air box. Taking the left #1 suction nozzle 202 as an example: Figure 17 , 18 19 Three-view drawings and Figure 20The left-hand suction nozzle 202, shown in the isometric view, is a cavity of the suction nozzle in a cooling air box, consisting of an upper suction nozzle 2013, a lower suction nozzle 2015, and a suction nozzle end cap 2011 connected together. The cavity of the suction nozzle in the cooling air box is fixed to the suction nozzle end cap 2011 by suction nozzle fixing bolts 2012. The cavity of the hot air suction nozzle is connected to the suction nozzle mounting plate 2017, which is connected to the suction nozzle mounting end cap 2018. The suction nozzle fixing pin 2016 is connected to the suction nozzle mounting end cap 2018. The other end of the suction nozzle is fixed by the suction nozzle positioning and fixing end 2019. The cavity formed by the upper suction nozzle 2013 and the lower suction nozzle 2015 forms an open, non-closed cavity, which serves as the suction gas channel. The suction gas inlet 2014 is the only way for the cooled hot air to be drawn in. The suction nozzle mounting plate 2017 is connected to the hot air intake cavity above the air box. The suction nozzle gas inlet 2014 has a shape that is narrow inside and wide outside. Hot air is drawn in through the open suction port, enters the non-closed cavity, and is then drawn out into the suction riser. This allows the cooling gas flowing from the nozzle to be drawn away by the hot air after heat exchange with the high-temperature surface material, eliminating the possibility of the hot air affecting the cooling airflow ejected from the nozzle. Within the negative pressure zone formed by the nozzle, the hot air on both sides is carried away, reducing the surface temperature of the surface material. The left #1 suction nozzle 202 is composed of multiple independent components, making maintenance and replacement easier, reducing maintenance costs, and improving equipment availability. The cooling left #1 suction nozzle 202 is installed on the front side of the airflow direction, and maintenance and replacement can be performed on the side of the air box. The negative pressure zone and inlet length of the cooling suction nozzle are mainly determined by the width of the surface material. The gas inlet length is generally 1.2-1.7 times the nozzle width, and the nozzle length needs to cover the maximum width of the surface material to ensure effective cooling capacity. The width of the gas inlet of the nozzle is mainly determined by the maximum speed of the production line and the maximum thickness of the surface material. The gas inlet width of the nozzle is generally 1.3-3.5 times the thickness of the surface material to ensure that the hot air nozzle has a sufficient negative pressure zone.

[0169] The cavity structure of the suction nozzle and the nozzle is as follows: Figure 21The diagram illustrates the gas flow direction during the operation of the suction nozzle and the nozzle itself. It shows the gas flow after encountering the surface of a surface material. The left side of the surface material 3 illustrates the gas flow direction of the smallest unit consisting of two nozzles and one suction nozzle. Two nozzles are located on either side of suction nozzle 202: left nozzle 1 (201) and left nozzle 2 (203). The left cold air duct vertical pipe 2091 of the suction-type cooling air box is connected to the left cold air duct 209. The left cold air duct vertical pipe 2091 is connected to left nozzle 1 (201) and left nozzle 2 (203). The left cold air duct vertical pipe 2091 delivers cooling gas into left nozzle 1 (201). 201. The cooling airflow generated by the left #2 nozzle acts on the surface material 3, and the cooling airflow generated by the left #1 nozzle (cooling airflow direction 2032) and the left #2 nozzle (cooling airflow direction 20102) controls the direction of the airflow through the ends of the left #2 nozzle and the left #1 nozzle (end 20101). After the cooling air exchanges heat with the surface material of the high-temperature surface material, it becomes hot air and begins to dissipate to both sides of the nozzle. The left #1 suction nozzle 202 is connected to the left hot air duct vertical pipe 2081. The suction force of the left hot air duct 208 draws the hot air drawn in by the suction nozzle through the left hot air duct vertical pipe 2081, forming a negative pressure around the suction nozzle to draw away the heat-exchanged hot air. The negative pressure of the suction nozzle cannot completely remove the ejected cooling gas. The design adopts an open-mouth suction nozzle structure, which increases the negative pressure area of ​​the suction nozzle and ensures that cooling is not affected. It also ensures that the hot air is drawn away in time, preventing the heat-exchanged hot air from affecting the cooling airflow on both sides and reducing the overall efficiency of the cooling box.

[0170] Both the suction nozzle and the spray nozzle mentioned above can rotate up and down. By rotating the spray nozzle up and down to change the direction of the cooling airflow, the edge diagonal lines and zinc flow lines on the surface of the strip steel can be effectively eliminated. The suction nozzle can adjust the suction angle according to the airflow rotation without affecting the cooling effect. Through experiments, the angle formed by tilting the spray nozzle is preferably 60°-30° between the airflow direction and the strip steel running direction. When this angle is more than 60°-30°, the effect of eliminating edge diagonal lines on thick zinc-aluminum-magnesium coated products and zinc flow lines on thick aluminum-zinc coated products is more obvious.

[0171] Changes in the internal shape of the aforementioned suction nozzles and spray nozzles will cause changes in airflow magnitude and flow rate. Therefore, the structure and dimensions within the cavity are particularly important. (Refer to...) Figure 22The diagram shows the distance between the height and angle of the suction nozzle and the surface material. It also explains the relationship between the cross-sectional views of the left #2 nozzle 203 and the left #1 suction nozzle 202 and the surface material. The internal structure of the left #2 nozzle 203 shows that the end 2031 of the left #2 nozzle is a symmetrical structure composed of upper and lower cavity sections. Inside the cavity is a circular hollow cavity and an inclined spray nozzle formed by the end 2031 of the left #2 nozzle. The cavity of the inclined spray nozzle has an angle with the horizontal centerline; assuming this angle is 'b', then the airflow injection angle and the spray on the surface material... The cooling width of material 3 will change. The nozzle inlet and outlet directions are defined according to the airflow direction. The inlet height h3 in the nozzle cavity in the inlet direction and the outlet height h4 in the nozzle cavity in the outlet direction both change the nozzle cavity angle b. With h4 kept constant, h3 is adjusted to allow the angle b to range from 1° to 50°. A larger angle b results in a narrower cooling airflow acting on the material 3, and vice versa. As shown in the figure, h3 > h4. After the cooling air enters the cavity, the cavity gradually contracts. The distance S between the nozzle and the material 3 is designed to maintain a safe distance to ensure the maximum production thickness of the material 3, to prevent collisions with the nozzle due to poor material shape, and to ensure that the cooling air output from the nozzle provides sufficient cooling to the surface of the material 3.

[0172] The internal structure of the left #1 suction nozzle 202 consists of a symmetrical structure composed of upper and lower cavity pieces. Inside the cavity is a circular hollow cavity and an inclined suction nozzle composed of the left #1 suction nozzle end 2021. The cavity of the inclined suction nozzle has an angle with the horizontal center line. Assuming this angle is α, the airflow intake angle and the negative pressure formed by the suction nozzle on the surface of the belt material 3 will change. The inlet and outlet directions of the suction nozzle are defined according to the airflow direction. The inlet height h2 in the suction nozzle cavity in the inlet direction and the outlet height h1 in the suction nozzle cavity in the outlet direction will both cause the angle α of the suction nozzle cavity to change. Under the condition that the height of h2 does not change, the range of the angle α is adjusted by h1 between 1° and 55°. The larger the angle α, the wider the negative pressure area formed on the belt material 3. Conversely, the smaller the angle α, the narrower the negative pressure area formed on the belt material 3. As shown in the diagram, h2 > h1. After the hot air escaping from the surface material 3 enters the cavity, the cavity gradually contracts. The distance between the end of the suction nozzle and the surface material 3 is adjustable. The distance S1 between the suction nozzle and the surface material is greater than the distance S between the nozzle and the surface material. This ensures that the large amount of hot air generated after the surface material 3 cools is sucked away by the left #1 suction nozzle 202. Figure 21The airflow direction of the suction nozzle needs to draw away the hot air after heat exchange between the two adjacent nozzles to ensure improved cooling effect.

[0173] The reference diagram in this invention is designed as an alternating arrangement of nozzle + suction nozzle + nozzle, but is not limited to a suction nozzle + nozzle + suction nozzle arrangement.

[0174] Reference for suction-type cooling air box Figure 1 The left hot air duct 208 and right hot air duct 108 in the right suction box 1 and the left suction box 2 are connected to the suction using a forced suction mode of a fan. The vertical pipe of the connected hot air duct forms a negative pressure in the nozzle cavity, which draws out the hot air in the negative pressure area outside the nozzle. The area of ​​negative pressure and suction force can be adjusted to meet the site conditions without affecting the cooling airflow.

[0175] The suction-type cooling air box uses dried air or nitrogen, which has a better cooling effect, as the cooling medium. Its optimized suction design minimizes nitrogen leakage, and the heat exchange mode allows for the recycling of the drawn-in hot nitrogen, reducing nitrogen consumption and the risk of asphyxiation to surrounding personnel, thus ensuring personnel safety and lowering operating costs. Using nitrogen as the cooling medium reduces the oxidation reaction between oxygen in the air and the surface material, providing a cooling solution that is more effective at preventing oxidation.

[0176] The suction-type cooling air box nozzle has a slit-end contraction structure. After the pressure inside the air collection chamber is equalized, the air is ejected through the nozzle. The slit-end contraction structure has an inclined section inside, which makes the flow and pressure of the ejected air more uniform and directional, so that the ejected gas does not become diffuse, uneven or disordered after exiting the nozzle.

[0177] The suction-type cooling air box nozzle has an externally expanding and internally gradually converging shape. The externally expanding shape makes it easier to collect more dissipated hot air, while the internally gradually converging shape provides sufficient suction to draw more hot air into the air collection chamber for discharge, thereby increasing the gas flow rate and achieving better cooling effect under limited volume.

[0178] The cooling and hot air ducts of the suction-type cooling fan box are both installed inside a sealed fan box with isolation gaps. (Refer to...) Figure 9 Water cooling can also be used as the cooling medium inside the isolation gap to prevent the temperature of the air supply system from being disturbed when it reaches the cooling nozzles and suction nozzles, thereby improving the working capacity and efficiency of the suction cooling air box.

[0179] The design and structure of the nozzles in the suction-type cooling air box can be changed by replacing them on the side of the nozzle bracket. Any nozzle can be maintained and repaired in a short time without disassembling the entire air box for maintenance and repair. The quick-connect nozzle and suction nozzle structure can better adapt to the adjustment of the air box for different production products.

[0180] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0181] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style 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 embodiments that can be understood by those skilled in the art.

Claims

1. A suction-type cooling fan box, characterized in that, include: The right suction box (1) and the left suction box (2) are respectively set on both sides of the surface material (3); Several right jet components and several right suction components are arranged from top to bottom on the side wall of the right suction box (1) corresponding to the surface material (3), and the right jet components and right suction components are arranged alternately up and down; Several left jet components and several left suction components are arranged from top to bottom on the side wall of the left suction box (2) corresponding to the surface material (3), and the left jet components and left suction components are arranged alternately up and down; The right refrigerant supply pipeline and the right hot air exhaust pipeline are installed inside the right suction box (1) and are connected to the right jet assembly and the right suction assembly, respectively. The left refrigerant supply pipeline and the left hot air exhaust pipeline are installed inside the left suction box (2) and are connected to the left jet assembly and the left suction assembly, respectively. When the plurality of right jet components and the plurality of right air intake components are arranged alternately up and down, the uppermost and lowermost sides are both set as right air intake components; when the plurality of left jet components and the plurality of left air intake components are arranged alternately up and down, the uppermost and lowermost sides are both set as left air intake components. The number of right intake assemblies is greater than the number of right jet assemblies, and the number of left intake assemblies is greater than the number of left jet assemblies; The right jet assembly includes: The lower nozzle (1015) is a horizontally arranged cylindrical cavity. Both ends are closed by nozzle end caps (1011) and nozzle fixing bolts (1012). Its inner side is the inlet end, which is connected to the jet port of the right suction box (1) and connected to the right refrigerant supply pipeline. The upper nozzle (1013) is located at the outlet end of the lower nozzle (1015), and the outlet end of the upper nozzle (1013) is the nozzle gas outlet (1014). Two nozzle mounting plates (1017) are respectively installed on the upper and lower sides of the cylindrical cavity; The nozzle mounting end cap (1018) is vertically mounted on one side of the nozzle end cap (1011) and is fixedly connected to the same end of the two nozzle mounting plates (1017); The nozzle positioning and fixing end (1019) is set on the nozzle end cover (1011) of the cylindrical cavity corresponding to the nozzle mounting end cover (1018), and is connected to the nozzle mounting end cover (1018) through the nozzle fixing pin (1016); The structure of the right jet assembly is the same as that of the left jet assembly; The width of the lower nozzle (1015) outlet end is h4, and the width of the upper nozzle (1013) outlet end is h3, h3>h4. Under the condition that the height of h4 does not change, h3 is adjusted to be between 1° and 50°. The larger the angle b, the narrower the width of the cooling air acting on the surface material (3). Conversely, the smaller the angle b, the wider the width of the cooling air acting on the surface material (3).

2. The suction-type cooling fan box according to claim 1, characterized in that, The left intake assembly includes: The lower suction nozzle (2015) is a horizontally arranged cylindrical cavity. Both ends are sealed by the suction nozzle end cap (2011) and the suction nozzle fixing bolt (2012). Its inner side is the outlet end, which is connected to the air inlet of the left suction box (2) and connected to the left hot air exhaust pipe. The upper suction nozzle (2013) is located at the inlet end of the lower suction nozzle (2015), and the inlet end of the upper suction nozzle (2013) is the suction nozzle gas inlet (2014). Two suction nozzle mounting plates (2017) are respectively installed on the upper and lower sides of the cylindrical cavity; A nozzle mounting end cap (2018) is vertically mounted on one side of a nozzle end cap (2011) and fixedly connected to the same end of two nozzle mounting plates (2017); The nozzle positioning and fixing end (2019) is set on the nozzle end cap (2011) of the cylindrical cavity corresponding to the nozzle mounting end cap (2018), and is connected to the nozzle mounting end cap (2018) by the nozzle fixing pin (2016); The structure of the left intake assembly is the same as that of the right intake assembly.

3. The suction-type cooling fan box according to claim 2, characterized in that, The width of the inlet end of the lower suction nozzle (2015) is h1, and the width of the inlet end of the upper suction nozzle (2013) is h2, h2 > h1. Under the condition that the height of h2 does not change, h1 is adjusted to be between 1° and 55°. The larger the angle of the included angle a, the wider the negative pressure area formed on the surface material (3). Conversely, the smaller the angle of the included angle a, the narrower the negative pressure area formed on the surface material (3).

4. The suction-type cooling fan box according to claim 2, characterized in that, The length of the upper nozzle (1013) is greater than the length of the upper suction nozzle (2013); the lower nozzle (1015) can rotate with the nozzle positioning and fixing end (1019), so that the upper nozzle (1013) can rotate up and down; the lower suction nozzle (2015) can rotate with the suction nozzle positioning and fixing end (2019), so that the upper suction nozzle (2013) can rotate up and down.

5. The suction-type cooling fan box according to claim 1, characterized in that, The left hot gas exhaust pipe includes: The left hot air duct (208) is placed horizontally on top of the left exhaust fan box (2); The top air outlet of the left hot air duct (2081) is connected to the left hot air duct (208); Several horizontally placed hot air collection pipes are distributed from top to bottom in the left suction box (2), and the inlet end of each hot air collection pipe is connected to a left suction component, and the outlet end is connected to the left hot air pipe vertical pipe (2081). The left hot gas exhaust pipe has the same structure as the right hot gas exhaust pipe.

6. The suction-type cooling fan box according to claim 1, characterized in that, The left refrigerant supply pipeline includes: The left cold air duct (209) is placed horizontally on top of the suction box (2); The left cold air duct vertical pipe (2091) has an air inlet at the top that connects to the left cold air duct (209); Several horizontally placed air supply pipes are distributed from top to bottom inside the left exhaust box (2), and the outlet end of each air supply pipe is connected to a left jet assembly, and the inlet end is connected to the vertical pipe (2091) of the left cold air pipe.

7. The suction-type cooling fan box according to claim 1, characterized in that, The right refrigerant supply pipe and the right hot air exhaust pipe in the right exhaust fan box (1) are both made of heat-insulating material; the left refrigerant supply pipe and the left hot air exhaust pipe in the left exhaust fan box (2) are both made of heat-insulating material, which can effectively prevent the hot air from affecting the refrigerant.

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