Temperature control type brazing furnace

Abstract

The temperature control type brazing furnace comprises a furnace body and a supporting plate arranged at the bottom in the furnace body, a shell is arranged on the outer side of the furnace body, a heat preservation material is arranged between the furnace body and the shell, a first heating device is arranged on the inner side wall of the furnace body, a second heating device is arranged at the top in the furnace body, and a control device and a temperature controller are arranged on the outer wall of the shell. A temperature sensor is arranged on the side face of the supporting plate and electrically connected with the temperature controller, and the control device is electrically connected with the first heating device and the second heating device. The temperature in the furnace body can be accurately detected, so that the temperature in the furnace body is the optimal temperature of a welded product.

Description

TECHNICAL FIELD

[0001] The utility model relates to brazing furnace technical field especially relates to a temperature control type brazing furnace. BACKGROUND

[0002] Brazing is one of important methods of metal material connection, and is widely used in aerospace, electronic industry, household appliance industry and instrument manufacturing fields. Tin-based filler metal also includes lead-free filler metal, and is mainly used in electronic, food, medical and other industries to replace lead-containing filler metal.

[0003] The brazing furnace is the operation of completing brazing in the sealed furnace, and the product surface is smooth and connected quickly, and the brazing temperature requirements of different metal materials are also different, so that the detection and control of temperature are crucial to ensure the brazing effect of metal materials. The existing patent CN209503175U discloses a brazing furnace including a brazing box, a furnace cover baffle is hinged on the brazing box, a cylindrical hearth is horizontally placed in the inside of the brazing box, a brazing plate is horizontally arranged in the hearth, a brazing mesh plate is arranged above the brazing plate, a plurality of through holes are arranged in the brazing mesh plate in an array, a plurality of circular grooves corresponding to the through holes are arranged on the brazing plate, a cold water pipe groove is arranged on the outer wall of the hearth in a spiral shape around the hearth, and a cold water pipe is arranged in the cold water pipe groove. The brazing furnace cannot accurately monitor the temperature in the furnace. UTILITY MODEL CONTENTS

[0004] In view of the problems in the prior art, the utility model provides a temperature control type brazing furnace.

[0005] The utility model discloses a technical scheme that is adopted to solve the above technical problems: a temperature control type brazing furnace, including the furnace body and the bottom plate of setting in the furnace body, the furnace body outside is equipped with the shell, is equipped with the heat preservation material between the furnace body and the shell, the furnace body inboard wall is equipped with the first heating device, the furnace body top is equipped with the second heating device, is equipped with the control device and the temperature controller on the outer wall of the shell, the bottom plate side is equipped with temperature sensor, temperature sensor and temperature controller electric connection, control device respectively with first heating device and second heating device electric connection.

[0006] As a preferred scheme, the first heating device is two, and is oppositely arranged on the left and right side walls in the furnace body.

[0007] As a preferred scheme, the first heating device and the second heating device are electric heating plates or electric heating rods.

[0008] As a preferred scheme, the control device includes a PLC controller.

[0009] As a preferred scheme, a plurality of connecting plates are arranged along the circumference of the furnace body and are spaced apart between the furnace body and the shell.

[0010] As a preferred scheme, the heat preservation material is asbestos or aluminum silicate fiber.

[0011] As a preferred scheme, the circulating air pipe is further provided with a circulating air fan, and the air inlet and the air outlet of the circulating air pipe both extend into the furnace body and the shell, and the air inlet of the circulating air pipe is close to the second heating device, and the air outlet of the circulating air pipe faces the supporting plate.

[0012] As a preferred scheme, the circulating air fan is a high-temperature-resistant fan.

[0013] The application has the advantages that the temperature in the furnace body can be accurately detected through the temperature controller and the temperature sensor, the control device is electrically connected with the first heating device and the second heating device, the temperature in the furnace body can be timely controlled through the control device, so that the temperature in the furnace body is the optimal temperature of the product to be welded, and the heat loss in the furnace body is avoided through the heat preservation material, and the heat energy utilization rate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 1 is a structural schematic view of the embodiment 1 of the application;

[0015] Figure 2 Fig. 2 is a structural schematic view of the embodiment 2 of the application.

[0016] Marked in the figure: 1, furnace body, 101, connecting plate, 102, heat preservation material, 2, shell, 3, first heating device, 4, second heating device, 5, temperature controller, 6, control device, 7, supporting plate, 8, temperature sensor, 9, base material to be welded, 10, filler metal, 11, circulating air pipe, 12, circulating air fan. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the application more clear, the application will be further described in detail below with reference to the drawings and embodiments. It should be understood that, in the description of the application, unless otherwise specified, the meaning of "multiple" is two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0018] Please refer to Figure 1The utility model discloses a temperature control type brazing furnace, including furnace body 1 and setting in the bottom of furnace body 1's supporting plate 7, furnace body 1 outside is equipped with the shell 2, furnace body 1 and the shell 2 between being equipped with heat preservation material 102, furnace body 1 inner side wall is equipped with first heating device 3, furnace body 1 inner top is equipped with second heating device 4, and the outer wall of shell 2 is equipped with control device 6 and temperature control instrument 5, and the side of supporting plate 7 is equipped with temperature sensor 8, and temperature sensor 8 and temperature control instrument 5 electric connection, and control device 6 respectively with first heating device 3, second heating device 4 and temperature control instrument 5 electric connection.

[0019] Among them, first heating device 3 is two, and opposite setting is in the left and right side wall on furnace body 1, first heating device 3 and second heating device 4 are electric heating plate or electric heating rod.The control device 6 includes PLC controller.It needs to be explained that the part of the application is not detailed for prior art.

[0020] Specifically, furnace body 1 and shell 2 are circumferentially spaced apart by a plurality of connecting plates 101 between furnace body 1.The heat preservation material 102 is stone wool or aluminum silicate fiber.By setting the heat preservation material, the heat loss in the furnace body is avoided, and the heat energy utilization rate is improved.

[0021] When using the present application, the filler metal 10 is placed between the two parent materials 9 to be welded and placed on the upper end of the supporting plate 7, the control device 6 controls the first heating device 3 and the second heating device 4 to heat the furnace body 1, the temperature sensor 8 transmits the detected temperature signal to the temperature control instrument 5, the temperature control instrument 5 can display the temperature detected by the temperature sensor 8, i.e. the temperature in the furnace body 1, when the brazing temperature required is reached, the control device 6 controls the first heating device 3 and the second heating device 4 to be closed, so that the temperature in the furnace body 1 is the optimum temperature for the welded product, ensuring the brazing effect.

[0022] Of course, the utility model is not limited to the above-mentioned embodiments, and the following provides several other embodiments based on the design concept of the utility model.

[0023] For example, in other embodiments, unlike the above-mentioned embodiments, such as Figure 2As shown, further comprising circulating air pipe 11, circulating air pipe 11 has air inlet and air outlet, circulating air pipe 11 is equipped with circulating air fan 12, air inlet and air outlet of circulating air pipe 11 all penetrate furnace body 1 and shell 2 and extend into furnace body 1, and air inlet of circulating air pipe 11 is close to second heating device 4, air outlet of circulating air pipe 11 is towards to support plate 7.Circulating air fan 12 is high-temperature-resistant fan.Due to the principle of hot air gathering upward, temperature of upper end of furnace body 1 is usually higher, so that temperature uniformity of furnace body 1 is poor, through setting circulating air pipe 11 and circulating air fan 12, hot air of upper end of furnace body 1 is transported to lower end, forming hot air circulating flow, ensuring temperature uniformity in furnace body 1, further improving brazing effect.

[0024] It should be noted that the above embodiments are only used to illustrate the present application, but the present application is not limited to the above embodiments, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application all fall within the protection scope of the present application.

Claims

1. A temperature-controlled brazing furnace, characterized in that, The furnace includes a furnace body (1) and a tray (7) located at the bottom of the furnace body (1). The furnace body (1) has an outer shell (2) on its outer side. Insulation material (102) is provided between the furnace body (1) and the outer shell (2). A first heating device (3) is provided on the inner side wall of the furnace body (1). A second heating device (4) is provided on the top of the furnace body (1). A control device (6) and a temperature controller (5) are provided on the outer wall of the outer shell (2). A temperature sensor (8) is provided on the side of the tray (7). The temperature sensor (8) is electrically connected to the temperature controller (5). The control device (6) is electrically connected to the first heating device (3) and the second heating device (4) respectively.

2. The temperature-controlled brazing furnace according to claim 1, characterized in that: There are two first heating devices (3), which are arranged opposite each other on the left and right side walls inside the furnace body (1).

3. The temperature-controlled brazing furnace according to claim 2, characterized in that: The first heating device (3) and the second heating device (4) are both electric heating plates or electric heating rods.

4. The temperature-controlled brazing furnace according to claim 1, characterized in that: The control device (6) includes a PLC controller.

5. A temperature-controlled brazing furnace according to claim 1, characterized in that: Multiple connecting plates (101) are provided at intervals along the circumference of the furnace body (1) between the furnace body (1) and the outer shell (2).

6. A temperature-controlled brazing furnace according to claim 1, characterized in that: The insulation material (102) is asbestos or aluminum silicate fiber.

7. A temperature-controlled brazing furnace according to claim 1, characterized in that: It also includes a circulating air duct (11), which has an air inlet and an air outlet. A circulating fan (12) is provided on the circulating air duct (11). The air inlet and air outlet of the circulating air duct (11) both penetrate the furnace body (1) and the outer shell (2) and extend into the furnace body (1). The air inlet of the circulating air duct (11) is close to the second heating device (4), and the air outlet of the circulating air duct (11) faces the tray (7).

8. A temperature-controlled brazing furnace according to claim 7, characterized in that: The circulating fan (12) is a high-temperature resistant fan.

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