Nozzle and glass tempering furnace having the same

Abstract

A nozzle and a glass tempering furnace having the nozzle, wherein the nozzle comprises a nozzle body, a gas input port, a gas transmission channel, a gas outlet, a ventilation cavity and a negative pressure input port arranged on the nozzle body; the gas input port, the gas transmission channel and the gas outlet are connected in sequence and form a positive pressure passage, the negative pressure input port, the ventilation cavity, the gas transmission channel and the gas outlet are connected in sequence, and the negative pressure input port and the ventilation cavity form a negative pressure passage; in addition, the glass tempering furnace comprises a furnace body, an air inlet pipe, a storage part all arranged in the furnace body and used for placing glass, a nozzle and a heater as described above; the nozzle is arranged above the storage part, the heater is arranged on the side of the nozzle, and the air inlet pipe is connected to the gas input port. The present invention can be used for tempering LOW-E glass.

Description

Technical Field

[0001] The invention belongs to the technical field of glass processing, and in particular relates to a nozzle and a glass tempering furnace having the nozzle. Background Art

[0002] Chinese patent document No. CN103274586A on September 4, 2013 discloses a glass tempering furnace including a furnace body, a drive roller, a furnace wire, and a radiation plate; the furnace body includes an upper furnace and a lower furnace, the drive roller is arranged between the upper furnace and the lower furnace, the furnace wire is arranged in the upper furnace and the lower furnace respectively, the furnace wire is arranged facing the ceramic roller, the radiation plate is arranged in the lower furnace and is placed above the furnace wire; it also includes a radiation tube group and a convection tube, the radiation tube group is hoisted in the upper furnace and arranged below the furnace wire, the radiation tube group is composed of a plurality of radiation tubes connected side by side, the radiation tube is an integral structure, and It is hoisted horizontally in the upper furnace, the diameter of the radiation tube is 30-40mm, and the wall thickness is 3-5mm; there are multiple convection tubes, which are hoisted side by side under the radiation tubes, the air inlet end of the convection tubes is connected to the fan, the diameter of the convection tubes is 20-30mm, the convection tube spacing is 260-300mm, a number of jet holes are provided on the convection tubes, the diameter of the jet holes is 2-3mm, and the spacing of the jet holes along the length direction of the convection tubes is 45-55mm, the driving roller includes a roller bracket and a number of ceramic rollers, the ceramic rollers are erected on the roller bracket, and the radiation tube is made of heat-resistant stainless steel pipe.

[0003] Among them, LOW-E glass, also known as low-emissivity glass, is a film product composed of multiple layers of metal or other compounds coated on the glass surface. The coating layer has the characteristics of high transmittance of visible light and high reflection of mid- and far-infrared rays. Compared with ordinary glass and traditional architectural coated glass, it has excellent heat insulation effect and good light transmittance.

[0004] The problem is that the structure and arrangement of the above-mentioned furnace wire, radiation tube and convection tube are used for uniform heating inside the furnace body. This heating method is not suitable for tempering LOW-E glass that has high reflectivity to mid- and far-infrared rays. When tempering LOW-E glass, local forced heating is required. Therefore, it is necessary to design a ventilation accessory and a corresponding tempering furnace that can be used for tempering LOW-E glass. Summary of the invention

[0005] The object of the present invention is to provide a nozzle and a glass tempering furnace having the nozzle, which can be used for tempering LOW-E glass.

[0006] To achieve the above object, the technical solution provided by the embodiment of the present invention is:

[0007] The nozzle comprises a nozzle body, a gas input port, a gas transmission channel, a gas outlet, a ventilation cavity and a negative pressure input port arranged on the nozzle body;

[0008] The gas input port, gas transmission channel and gas outlet are connected in sequence to form a positive pressure passage, the negative pressure input port, ventilation cavity, gas transmission channel and gas outlet are connected in sequence, and the negative pressure input port and ventilation cavity form a negative pressure passage.

[0009] The negative pressure input port is arranged on the side of the nozzle body;

[0010] The gas input port, the gas transmission channel and the gas outlet are arranged on the nozzle body in sequence from top to bottom, and the ventilation cavity is arranged in the nozzle body.

[0011] The number of the negative pressure input port is one;

[0012] Alternatively, the number of the negative pressure input ports is more than two and they are arranged at intervals along the circumferential direction on the nozzle body.

[0013] The gas transmission channel includes a first sub-channel, a second sub-channel and a third sub-channel connected in sequence;

[0014] The diameter of the first sub-channel is greater than the diameter of the second sub-channel;

[0015] The diameter of the third sub-channel is greater than the diameter of the second sub-channel;

[0016] The ventilation cavity is connected between the output end of the second sub-channel and the input end of the third sub-channel, the gas input port is connected to the input end of the first sub-channel, and the gas outlet is connected to the output end of the third sub-channel.

[0017] The nozzle body comprises a nozzle, an inner nozzle arranged in the nozzle, and a connecting seat arranged on the nozzle;

[0018] The first sub-channel and the gas input port are arranged on the connection seat;

[0019] The second sub-channel is arranged at the inner mouth;

[0020] The third sub-channel, the air outlet, the ventilation cavity and the negative pressure input port are arranged on the nozzle, and the third sub-channel is connected to the lower part of the ventilation cavity.

[0021] The connecting seat is arranged on the upper part of the nozzle, and is spaced apart between the inner nozzle and the third sub-channel.

[0022] The nozzle is provided with a mounting hole connected to the upper part of the ventilation cavity corresponding to the inner nozzle, and the inner nozzle is embedded in the mounting hole.

[0023] A glass tempering furnace, comprising a furnace body, an air inlet pipe, a storage part which is arranged in the furnace body and is used to place glass, a nozzle and a heater as mentioned above;

[0024] The nozzle is arranged above the storage part, the heater is arranged on the side of the nozzle, and the air inlet pipe is connected with the gas input port.

[0025] The heater is located above the nozzle.

[0026] The beneficial effects of the present invention are as follows:

[0027] The nozzle of the present invention and the glass tempering furnace with the nozzle can be used for tempering LOW-E glass and for local forced heating of LOW-E glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of a nozzle according to an embodiment of the present invention.

[0029] Figure 2 It is a schematic structural diagram of a nozzle according to an embodiment of the present invention.

[0030] Figure 3 4 is a cross-sectional view of a nozzle according to an embodiment of the present invention.

[0031] Figure 4 The figure is a schematic structural diagram of a glass tempering furnace according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0033] See also Figure 1-4 The nozzle comprises a nozzle body 1, a gas input port 2, a gas transmission channel 3, a gas outlet 4, a ventilation cavity 5 and a negative pressure input port 6 arranged on the nozzle body 1;

[0034] The gas input port 2, gas delivery channel 3 and gas outlet 4 are connected in sequence to form a positive pressure passage, the negative pressure input port 6, ventilation cavity 5, gas delivery channel 3 and gas outlet 4 are connected in sequence, and the negative pressure input port 6 and ventilation cavity 5 form a negative pressure passage.

[0035] When the nozzle is in use, gas is input from the gas input port 2, passes through the gas delivery channel 3 and is finally output from the gas outlet 4. At the same time, negative pressure is formed at the ventilation cavity 5 and the negative pressure input port 6. The gas outside the nozzle body 1 enters the ventilation cavity 5 through the negative pressure input port 6, then flows into the gas delivery channel 3, and is finally output from the gas outlet 4. The nozzle of this structure is suitable for local forced heating during the tempering treatment of LOW-E glass.

[0036] Furthermore, the negative pressure input port 6 is arranged on the side of the nozzle body 1;

[0037] The gas input port 2, the gas transmission channel 3 and the gas outlet 4 are arranged on the nozzle body 1 in sequence from top to bottom, and the ventilation cavity 5 is arranged in the nozzle body 1, so as to realize the arrangement of the gas input port 2, the gas transmission channel 3, the gas outlet 4, the ventilation cavity 5 and the negative pressure input port 6 on the nozzle body 1.

[0038] Furthermore, the number of the negative pressure input port 6 is one;

[0039] Alternatively, the number of the negative pressure input ports 6 is more than two and they are arranged on the nozzle body 1 at intervals along the circumferential direction.

[0040] In this embodiment, the number of the negative pressure input ports 6 is two and they are evenly distributed on the nozzle body 1 along the circumferential direction.

[0041] Furthermore, the gas delivery channel 3 includes a first sub-channel 7, a second sub-channel 8 and a third sub-channel 9 which are connected in sequence;

[0042] The diameter of the first sub-channel 7 is greater than the diameter of the second sub-channel 8;

[0043] The diameter of the third sub-channel 9 is greater than that of the second sub-channel 8 , which is beneficial for the gas outside the nozzle body 1 to flow into the third sub-channel 9 of the gas delivery channel 3 through the negative pressure input port 6 and the ventilation cavity 5 .

[0044] The ventilation cavity 5 is connected between the output end of the second sub-channel 8 and the input end of the third sub-channel 9 , the gas input port 2 is connected to the input end of the first sub-channel 7 , and the gas outlet 4 is connected to the output end of the third sub-channel 9 .

[0045] Furthermore, the nozzle body 1 includes a nozzle 10, an inner nozzle 11 disposed in the nozzle 10, and a connecting seat 12 disposed on the nozzle 10;

[0046] The inner nozzle 11 and the connecting seat 12 can be fixed on the nozzle 10 by welding.

[0047] The first sub-channel 7 and the gas input port 2 are arranged on the connection seat 12;

[0048] The second sub-channel 8 is arranged at the inner mouth 11;

[0049] The third sub-channel 9 , the air outlet 4 , the ventilation cavity 5 and the negative pressure input port 6 are arranged on the nozzle 10 , and the third sub-channel 9 is connected to the lower part of the ventilation cavity 5 .

[0050] Furthermore, the connecting seat 12 is arranged on the upper part of the nozzle 10, and the inner nozzle 11 is spaced apart from the third sub-channel 9, so that the gas outside the nozzle body 1 can flow into the third sub-channel 9 through the negative pressure input port 6 and the ventilation cavity 5.

[0051] Furthermore, the nozzle 10 is provided with a mounting hole connected to the upper part of the ventilation cavity 5 corresponding to the inner nozzle 11 , and the inner nozzle 11 is embedded in the mounting hole, and the mounting hole is used for positioning the inner nozzle 11 .

[0052] The glass tempering furnace comprises a furnace body, an air inlet pipe 15, a storage part 13 which is arranged in the furnace body and used for placing glass, and a nozzle and a heater 14 as mentioned above;

[0053] In this embodiment, the heater 14 is a heating wire, and the number of nozzles is several and they are arranged in a straight line at intervals or in a rectangular array.

[0054] The nozzle is arranged above the storage portion 13 , the heater 14 is arranged on the side of the nozzle, and the air inlet pipe 15 is connected to the gas input port 2 .

[0055] When the glass tempering furnace is in use, the LOW-E glass to be tempered is placed on the storage portion 13, and the heater 14 is in operation to heat the gas inside the furnace body. The input end of the air inlet pipe 15 is connected to the air compressor, and the air compressor delivers compressed gas to the air inlet pipe 15. The compressed gas passes through the gas input port 2 and the gas delivery channel 3 in sequence, and is output from the gas outlet 4.

[0056] At the same time, negative pressure is formed at the ventilation cavity 5 and the negative pressure input port 6, and the gas heated by the heater 14 outside the nozzle body 1 enters the ventilation cavity 5 through the negative pressure input port 6, then converges into the gas delivery channel 3, and finally outputs from the gas outlet 4, thereby realizing the hot air flow output of the nozzle, and the hot air flow acts on the LOW-E glass to realize the tempering treatment of the LOW-E glass;

[0057] The nozzle of the present invention and the glass tempering furnace with the nozzle can be used for tempering LOW-E glass and for local forced heating of LOW-E glass.

[0058] Furthermore, the heater 14 is located above the nozzle, and the heater 14 is not flush with the nozzle, so as to avoid blocking the airflow from quickly entering the nozzle.

[0059] The above is a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected, and the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A nozzle, characterized in that It comprises a nozzle body (1), a gas input port (2) arranged on the nozzle body (1), a gas transmission channel (3), a gas outlet (4), a ventilation cavity (5) and a negative pressure input port (6); The gas input port (2), the gas transmission channel (3) and the gas outlet (4) are connected in sequence to form a positive pressure passage; the negative pressure input port (6), the ventilation cavity (5), the gas transmission channel (3) and the gas outlet (4) are connected in sequence; the negative pressure input port (6) and the ventilation cavity (5) form a negative pressure passage; The gas transmission channel (3) comprises a first sub-channel (7), a second sub-channel (8) and a third sub-channel (9) which are connected in sequence; The ventilation cavity (5) is connected between the output end of the second sub-channel (8) and the input end of the third sub-channel (9), the gas input port (2) is connected to the input end of the first sub-channel (7), and the gas outlet (4) is connected to the output end of the third sub-channel (9); The nozzle body (1) comprises a nozzle (10), an inner nozzle (11) arranged in the nozzle (10), and a connecting seat (12) arranged on the nozzle (10); The first sub-channel (7) and the gas input port (2) are arranged on a connecting seat (12); The second sub-channel (8) is arranged at the inner mouth (11); The third sub-channel (9), the air outlet (4), the ventilation cavity (5) and the negative pressure input port (6) are arranged on the nozzle (10), and the third sub-channel (9) is connected to the lower part of the ventilation cavity (5); The connecting seat (12) is arranged on the upper part of the nozzle (10), and is spaced apart between the inner nozzle (11) and the third sub-channel (9); The number of the negative pressure input port (6) is one; Alternatively, the number of the negative pressure input ports (6) is more than two and they are arranged at intervals along the circumferential direction on the nozzle body (1).

2. The nozzle according to claim 1, characterized in that The negative pressure input port (6) is arranged on the side of the nozzle body (1); The gas input port (2), the gas transmission channel (3) and the gas outlet (4) are arranged on the nozzle body (1) in sequence from top to bottom, and the ventilation cavity (5) is arranged inside the nozzle body (1).

3. The nozzle according to claim 1, characterized in that The diameter of the first sub-channel (7) is greater than the diameter of the second sub-channel (8); The diameter of the third sub-channel (9) is greater than the diameter of the second sub-channel (8).

4. The nozzle according to claim 1, characterized in that The nozzle (10) is provided with a mounting hole corresponding to the inner nozzle (11) and connected to the upper part of the ventilation cavity (5), and the inner nozzle (11) is embedded in the mounting hole.

5. Glass tempering furnace, characterized in that: It comprises a furnace body, an air inlet pipe (15), a storage portion (13) which is arranged inside the furnace body and is used to place glass, and a nozzle and a heater (14) according to any one of claims 1 to 4; The nozzle is arranged above the storage portion (13), the heater (14) is arranged on the side of the nozzle, and the air inlet pipe (15) is connected to the gas input port (2).

6. The glass tempering furnace according to claim 5, characterized in that: The heater (14) is located above the nozzle.

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