High-temperature furnace

Abstract

The utility model relates to a high temperature furnace which comprises a high temperature box, heaters, a three-phase trigger and a controller, the heaters are arranged in the high temperature box, the number of the heaters is multiple, every two heaters are grouped, the multiple groups of heaters are arranged at intervals in the length direction of the high temperature box, the multiple groups of heaters are divided into three areas, and the multiple groups of heaters in each area are connected in parallel. The two heaters in each group are connected in series, the three-zone heaters are connected with a three-phase trigger in a three-phase delta connection mode, and the three-phase trigger is electrically connected with a controller. According to the utility model, the heaters in the three areas are connected with the three-phase trigger in a three-phase delta connection manner, and the heaters in the three areas can work successively, so that the highest heating rate of the high-temperature furnace can reach 100 DEG C / min, the highest heating rate can reach 1300 DEG C within 12 minutes, and the heating rate is effectively improved; and meanwhile, the heating rate can be adjusted within the range of 10 DEG C / min-100 DEG C / min, user requirements are better met, and the application range of the high-temperature furnace is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of heating equipment, in particular to a high-temperature furnace. Background Art

[0002] High temperature furnace is a kind of equipment mainly used for heating and heat treatment in laboratories of industrial and mining enterprises, scientific research institutions and laboratories. It is an indispensable instrument in various laboratories.

[0003] At present, the heating rate of high-temperature furnaces is less than 50℃ / min, which cannot meet the rapid heating test of special temperature-resistant materials. Therefore, it is necessary to develop a high-temperature furnace with an adjustable heating rate between 10℃ / min and 100℃ / min. Utility Model Content

[0004] Based on this, it is necessary to provide a high temperature furnace to address the problem that the current high temperature furnace has a heating rate of less than 50°C / min and cannot meet the rapid heating test requirements of special temperature-resistant materials.

[0005] A high temperature furnace comprises a high temperature box, a heater, a three-phase trigger and a controller. The heater is arranged in the high temperature box. There are multiple heaters, and the multiple heaters are grouped in twos. The multiple groups of heaters are arranged at intervals along the length direction of the high temperature box. The multiple groups of heaters are divided into three zones. The multiple groups of heaters in each zone are connected in parallel, and the two heaters in each group are connected in series. The heaters in the three zones are connected to the three-phase trigger in a three-phase triangle connection method, and the three-phase trigger is electrically connected to the controller.

[0006] In the above-mentioned high-temperature furnace, the heaters of the three zones are connected to the three-phase trigger in a three-phase delta connection, so that the three-zone heaters can work successively, so that the heating rate of the high-temperature furnace can reach up to 100°C / min, so that the high-temperature furnace can be heated to 1300 degrees in 12 minutes at the fastest, effectively improving the heating rate; through the cooperation of the controller and the three-phase trigger, the heating rate can be adjusted within the range of 10°C / min to 100°C / min, which better meets user needs and makes the application range of the high-temperature furnace wider.

[0007] In one embodiment, the high temperature box includes a box body, an upper cover connected to the box body, and a side cover connected to the box body. There are two side covers, which are arranged on both sides of the box body. A high temperature chamber is arranged between the two side covers, the upper cover and the box body.

[0008] In one embodiment, the box body includes an outer box part and an inner insulation part connected to the outer box part, an installation groove is provided on the inner wall of the inner insulation part, the heater is embedded in the installation groove, the heater corresponds to the installation groove one by one, and the inner insulation part is provided with a receiving groove, and the receiving groove is connected to the installation groove.

[0009] In one of the embodiments, the upper cover includes a main cover portion and an upper heat-insulating portion connected to the main cover portion, the inner heat-insulating portion is provided with an upper abutting groove, and the upper heat-insulating portion is inserted into the upper abutting groove.

[0010] In one embodiment, the side cover includes a side cover portion and a side insulation portion connected to the side cover portion, a side embedding groove is provided at the connection between the outer box portion and the inner insulation portion, the side cover portion extends into the side embedding groove, the side insulation portion extends into the accommodating groove, the side insulation portion is provided with an upper giveway groove, and the upper insulation portion extends into the upper giveway groove.

[0011] In one of the embodiments, an upper embedding groove is provided at the connection between the main cover portion and the upper heat-insulating portion, and the side cover portion extends into the upper embedding groove.

[0012] In one embodiment, the side cover further includes an abutment portion, the abutment portion is disposed between the side cover portion and the side heat-insulating portion, the abutment portion abuts against the upper heat-insulating portion, and the abutment portion abuts against the inner heat-insulating portion.

[0013] In one of the embodiments, the upper cover is provided with a through slot, and the through slot is communicated with the high temperature chamber.

[0014] In one embodiment, the high temperature furnace further includes a temperature sensor, which is disposed in the high temperature chamber and is communicatively connected to the controller.

[0015] In one embodiment, the heater is a U-shaped molybdenum silicon rod with a diameter of 14 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an assembly structure diagram of a high temperature furnace in one embodiment of the utility model;

[0017] Figure 2 For Figure 1 The circuit diagram of the heater and three-phase trigger in the high-temperature furnace shown;

[0018] Figure 3 For Figure 1 The assembly structure diagram of the box, heater and side cover in the high temperature furnace shown;

[0019] Figure 4 For Figure 1The structural diagram of the upper cover in the high temperature furnace shown;

[0020] Figure 5 For Figure 1 The structural diagram of the side cover in the high temperature furnace shown;

[0021] Figure 6 for Figure 1 A magnified view of part A;

[0022] Figure 7 for Figure 1 Enlarged view of part B.

[0023] The meanings of the numbers in the accompanying drawings are:

[0024] 100-High temperature furnace;

[0025] 10-high temperature box, 11-box body, 111-outer box part, 112-inner insulation part, 113-side embedded groove, 114-accommodation groove, 115-installation groove, 116-upper abutment groove, 12-upper cover, 121-main cover part, 122-upper insulation part, 123-upper embedded groove, 124-through groove, 13-side cover, 131-side cover part, 132-side insulation part, 133-upper give way groove, 134-abutment part;

[0026] 20-heater;

[0027] 30-controller;

[0028] 40-upper locking assembly, 41-mounting seat, 42-buckle, 43-handle, 44-hook;

[0029] 50-side locking assembly, 51-fixed seat, 511-guide hole, 52-pin, 521-pin portion, 522-guide portion, 53-cage;

[0030] 60-roller;

[0031] 70-Three-phase trigger. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0038] See also Figure 1 and Figure 2 , is a high temperature furnace 100 of an embodiment of the utility model, comprising a high temperature box 10, a heater 20, a three-phase trigger 70 and a controller 30, wherein the heater 20 is arranged in the high temperature box 10, the number of the heaters 20 is 18, the 18 heaters 20 are grouped in pairs, 9 groups of the heaters 20 are arranged at intervals along the length direction of the high temperature box 10, the 9 groups of the heaters 20 are divided into three zones, the 3 groups of the heaters 20 in each zone are connected in parallel, the two heaters 20 in each group are connected in series, the heaters 20 in the three zones are connected to the three-phase trigger 70 in a three-phase triangle connection, the three-phase trigger 70 is electrically connected to the controller 30, and the heater 20 is a U-shaped molybdenum silicon rod with a diameter of 14 mm.

[0039] See also Figure 3 The high temperature box 10 includes a box body 11, an upper cover 12 connected to the box body 11, and a side cover 13 connected to the box body 11. The upper cover 12 is arranged above the box body 11. There are two side covers 13, and the two side covers 13 are arranged on both sides of the box body 11. A high temperature chamber is arranged between the two side covers 13, the upper cover 12 and the box body 11.

[0040] See also Figure 3 The box body 11 includes an outer box part 111 and an inner heat preservation part 112 connected to the outer box part 111. A side embedding groove 113 is provided at the connection between the outer box part 111 and the inner heat preservation part 112. An installation groove 115 is provided on the inner wall of the inner heat preservation part 112. The heater 20 is embedded in the installation groove 115. The heater 20 corresponds to the installation groove 115 one by one. The inner heat preservation part 112 is provided with a receiving groove 114, and the receiving groove 114 is connected to the installation groove 115. An upper abutting groove 116 is provided at the top of the inner heat preservation part 112.

[0041] See also Figure 4The upper cover 12 is provided with a through slot 124 in the middle, and the upper cover 12 includes a main cover 121 and an upper heat preservation part 122 connected to the main cover 121. An upper embedding slot 123 is provided at the connection between the main cover 121 and the upper heat preservation part 122. The upper heat preservation part 122 is inserted into the upper abutment slot 116. The through slot 124 passes through the main cover 121 and the upper heat preservation part 122 and is connected to the high temperature chamber. In this way, small test samples can be placed in the high temperature chamber through the through slot 124, which is convenient for users to use; on the other hand, the state of the test samples under high temperature conditions can also be observed through the through slot 124, which can better meet user needs.

[0042] See also Figure 2 and Figure 5 The side cover 13 includes a side cover portion 131 and a side insulation portion 132 connected to the side cover portion 131, the side cover portion 131 extends into the side embedding groove 113, the upper end of the side cover portion 131 extends into the upper embedding groove 123, the side insulation portion 132 extends into the accommodating groove 114, and the side insulation portion 132 is provided with an upper give-way groove 133, and the upper insulation portion 122 extends into the upper give-way groove 133.

[0043] See also Figure 5 The side cover 13 also includes a contact portion 134, which is disposed between the side cover portion 131 and the side insulation portion 132. The upper end of the contact portion 134 contacts the upper insulation portion 122, and the side end and the lower end of the contact portion 134 contact the inner insulation portion 112. This can effectively avoid heat loss, effectively improve the insulation effect of the high-temperature furnace 100, and increase the heating rate. The inner insulation portion 112, the upper insulation portion 122, and the contact portion 134 of the side insulation portion 132 are all made of ceramic. Ceramic is a material that is both resistant to high temperatures and resistant to high-temperature impacts, which effectively improves the service life of the high-temperature furnace 100.

[0044] See also Figure 3 The high temperature furnace 100 further includes a temperature sensor (not shown), which is disposed in the high temperature chamber and is in communication with the controller 30. The temperature threshold can be set by the controller 30. When the temperature value detected by the temperature sensor is less than the temperature threshold stored in the controller 30, the controller 30 controls the heater 20 to turn on; when the temperature value detected by the temperature sensor is not less than the temperature threshold stored in the controller 30, the controller 30 controls the heater 20 to turn off. On the one hand, the temperature state in the high temperature chamber can be better monitored, and on the other hand, the temperature in the high temperature chamber can be more intelligently controlled to better meet user needs.

[0045] See also Figure 6The high temperature furnace 100 further includes an upper locking assembly 40, which is disposed between the box body 11 and the upper cover 12. The upper locking assembly 40 includes a mounting seat 41, a buckle 42, a handle 43 and a hook 44. The mounting seat 41 is fixedly disposed on the box body 11, the handle 43 is hinged to the mounting seat 41, the buckle 42 is hinged to the handle 43, and the hook 44 is fixedly connected to the upper cover 12. When the handle 43 is flipped upward, the buckle 42 moves upward accordingly, so that the buckle 42 releases the hook 44; when the handle 43 is flipped downward, the buckle 42 moves downward accordingly, so that the buckle 42 is fastened to the hook 44.

[0046] See also Figure 7 The high temperature furnace 100 also includes a side locking assembly 50, which is arranged between the box body 11 and the side cover 13. The side locking assembly 50 includes a fixing seat 51, a latch 52 and a clamping seat 53. The fixing seat 51 is fixedly arranged on the box body 11, and the fixing seat 51 is provided with a sliding groove. The surface of the fixing seat 51 is provided with a guide hole 511, and the guide hole 511 is communicated with the sliding groove. The latch 52 includes a pin portion 521 and a guide portion 522 connected to the pin portion 521. The pin portion 521 is slidably arranged in the sliding groove, and the guide portion 522 extends out of the fixing seat 51 through the guide hole 511. The clamping seat 53 is fixedly arranged on the side cover 13, and the clamping seat 53 is provided with a pin hole. The pin portion 521 is inserted into the pin hole, and the side locking assembly 50 is in a locked state.

[0047] See also Figure 1 The high temperature furnace 100 further includes a roller 60 with a brake function, and the roller 60 is arranged below the high temperature box 10. The roller 60 can facilitate the user to move the high temperature furnace 100, and the roller 60 has a brake function, which is more convenient for the user to use.

[0048] The working principle of the high temperature furnace 100 in this embodiment is as follows: the heaters 20 in the three zones are connected to the three-phase trigger 70 in a three-phase triangle connection method, so that the three-zone heaters 20 can work successively, so that the heating rate of the high temperature furnace 100 can reach up to 100°C / min, so that the high temperature furnace 100 can be heated to 1300 degrees in 12 minutes at the fastest, effectively improving the heating rate; through the cooperation of the controller 30 and the three-phase trigger 70, the heating rate can be adjusted within the range of 10°C / min to 100°C / min, which better meets the needs of users and makes the application range of the high temperature furnace 100 wider.

[0049] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A high temperature furnace, characterized in that: It includes a high-temperature box, a heater, a three-phase trigger and a controller. The heater is arranged in the high-temperature box. There are multiple heaters, and the multiple heaters are grouped in twos. The multiple groups of heaters are arranged at intervals along the length direction of the high-temperature box. The multiple groups of heaters are divided into three zones. The multiple groups of heaters in each zone are connected in parallel, and the two heaters in each group are connected in series. The heaters in the three zones are connected to the three-phase trigger in a three-phase triangle connection method, and the three-phase trigger is electrically connected to the controller.

2. The high temperature furnace according to claim 1, characterized in that: The high temperature box includes a box body, an upper cover connected to the box body and a side cover connected to the box body. There are two side covers, which are arranged on both sides of the box body. A high temperature chamber is arranged between the two side covers, the upper cover and the box body.

3. The high temperature furnace according to claim 2, characterized in that: The box body includes an outer box part and an inner insulation part connected to the outer box part. An installation groove is provided on the inner wall of the inner insulation part. The heater is embedded in the installation groove. The heater corresponds to the installation groove one by one. The inner insulation part is provided with a receiving groove, and the receiving groove is connected to the installation groove.

4. The high temperature furnace according to claim 3, characterized in that: The upper cover comprises a main cover portion and an upper heat-insulating portion connected to the main cover portion, the inner heat-insulating portion is provided with an upper abutting groove, and the upper heat-insulating portion is inserted into the upper abutting groove.

5. The high temperature furnace according to claim 4, characterized in that: The side cover includes a side cover portion and a side insulation portion connected to the side cover portion, a side embedding groove is provided at the connection between the outer box portion and the inner insulation portion, the side cover portion extends into the side embedding groove, the side insulation portion extends into the accommodating groove, the side insulation portion is provided with an upper give-way groove, and the upper insulation portion extends into the upper give-way groove.

6. The high temperature furnace according to claim 5, characterized in that: An upper embedding groove is provided at the connection between the main cover part and the upper heat-insulating part, and the side cover part extends into the upper embedding groove.

7. The high temperature furnace according to claim 6, characterized in that: The side cover further includes a contact portion, which is disposed between the side cover portion and the side heat-insulating portion, the contact portion contacts the upper heat-insulating portion, and the contact portion contacts the inner heat-insulating portion.

8. The high temperature furnace according to claim 2, characterized in that: The upper cover is provided with a through slot, and the through slot is communicated with the high temperature chamber.

9. The high temperature furnace according to claim 2, characterized in that: It also includes a temperature sensor, which is arranged in the high-temperature chamber and is communicatively connected with the controller.

10. The high temperature furnace according to claim 1, characterized in that: The heater is a U-shaped molybdenum silicon rod with a diameter of 14 mm.

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