Vacuum box type atmosphere furnace with good temperature and atmosphere uniformity
By designing the sample storage box and fan blades, the problem of uneven temperature and atmosphere in the vacuum box-type atmosphere furnace was solved, achieving more efficient heating and atmosphere uniformity, and improving heating efficiency and atmosphere distribution uniformity.
Patent Information
- Application Number
- CN202520607485.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-02
AI Technical Summary
Existing vacuum box-type atmosphere furnaces suffer from temperature and atmosphere inhomogeneity during the heating process. Hot spots are difficult to avoid, and gas flow is not unidirectional, resulting in low heating efficiency and difficulty in achieving a uniform atmosphere.
The sample storage box design isolates the sample from the heating element and uses heat conduction through the partition. Combined with the fan blades and permeable bricks, it ensures unidirectional gas flow and achieves atmosphere uniformity.
It significantly reduces hot spots, improves the efficiency of the heating process and the uniformity of the atmosphere, and ensures uniform heating of the sample and uniform distribution of the atmosphere.
Smart Images
Figure CN223954603U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of atmosphere furnace, especially relates to a vacuum box type atmosphere furnace with good temperature and atmosphere uniformity. BACKGROUND
[0002] The vacuum box type atmosphere furnace is a heat treatment equipment widely used in the fields of material research, metallurgy, electronics, etc., and its main function is to heat and treat samples in a vacuum or specific atmosphere environment to meet the processing and research needs of different materials.
[0003] The existing vacuum box type atmosphere furnace is usually composed of a base, a furnace shell, a furnace lining, a furnace door, heating elements, a gas extraction device and a gas injection device. The furnace shell is fixed on the base, the furnace lining is arranged inside for heat preservation, and the furnace door is installed on the side of the furnace shell for convenient sample loading and unloading. The heating elements are distributed on the inner wall of the furnace lining to directly heat the samples placed in the furnace. The gas extraction device is used to extract air from the furnace to form a vacuum environment, and the gas injection device can inject inert or reactive gas into the furnace.
[0004] However, the existing vacuum box type atmosphere furnace has the following disadvantages in actual use:
[0005] Firstly, the heat of the existing vacuum box type atmosphere furnace is mainly transferred to the samples by thermal radiation, and hot spots are inevitable during the heating process, which will cause some samples to be overheated and other samples to be insufficiently heated. This phenomenon is particularly serious for larger furnaces, so it is difficult to achieve uniform temperature; secondly, the gas inlet hole of the existing vacuum box type atmosphere furnace is usually located at the bottom or side of the furnace body, and the gas outlet hole is located at the top or side of the furnace body and far away from the gas inlet hole. The entire furnace shell is an atmosphere space, so the gas will penetrate into the surrounding furnace lining material from the furnace chamber, which cannot guarantee the one-way flow of the gas, making it difficult to achieve truly uniform atmosphere in the furnace chamber.
[0006] Therefore, it is necessary to invent a vacuum box type atmosphere furnace with good temperature and atmosphere uniformity. UTILITY MODEL CONTENTS
[0007] To solve the above problems, the utility model provides a vacuum box type atmosphere furnace with good temperature and atmosphere uniformity, and the technical scheme used is:
[0008] The application discloses a vacuum box-type atmosphere furnace with good temperature and atmosphere uniformity, which comprises a base, a furnace shell, a furnace lining, a furnace door, heating elements, an exhaust pipe, a first valve, a gas injection mechanism, a gas extraction mechanism and a sample storage box, the upper side of the base is fixed with the furnace shell through bolts, the inside of the furnace shell is fixed with the furnace lining, and the side of the furnace shell is rotatably installed with the furnace door through a hinge; the inner wall of the furnace lining is uniformly fixed with a plurality of heating elements through bolts, the heating elements are electrically connected with an external control computer through data lines; the inside of the furnace lining is fixed with the sample storage box through bolts, and the inside of the furnace lining is fixed with the exhaust pipe; one end of the exhaust pipe is communicated with the inside of the furnace lining, and the other end of the exhaust pipe is arranged outside the furnace shell, and the exhaust pipe outside the furnace shell is fixed with the first valve; the inside of the base is fixed with the gas injection mechanism, and the input end of the gas injection mechanism is arranged outside the base; the output end of the gas injection mechanism is communicated with the inside of the sample storage box; the inside of the base is fixed with the gas extraction mechanism, and the input end of the gas extraction mechanism is communicated with the inside of the furnace lining, and the output end of the gas extraction mechanism is arranged outside the base.
[0009] Further, the gas extraction mechanism comprises a gas extraction pipe, a vacuum pump, a gas conveying pipe and a second valve, the gas extraction pipe is fixed in the inside of the furnace lining, one end of the gas extraction pipe is communicated with the inside of the furnace lining, and the other end of the gas extraction pipe is fixed with the input end of the vacuum pump through a joint; the base of the vacuum pump is fixed in the inside of the base through bolts, and the output end of the vacuum pump is fixed with the gas conveying pipe through a joint, and the other end of the gas conveying pipe is arranged outside the base, and the gas conveying pipe outside the base is fixed with the second valve; the vacuum pump is electrically connected with an external control computer through data lines, and the inside of the furnace lining can form a vacuum state.
[0010] Further, the gas injection mechanism comprises a gas injection pipe, a pressure gauge and a third valve, the gas injection pipe is fixed in the inside of the base through a pipe clamp, and one end of the gas injection pipe is fixed with the sample storage box through a joint; the other end of the gas injection pipe is arranged outside the base, and the middle part of the gas injection pipe is fixed with the pressure gauge and the third valve respectively, and the inside of the sample storage box can be injected with corresponding inert or reactive gas through cooperation with an external gas supply mechanism.
[0011] Further, the sample storage box comprises a sample bin and a gas permeable brick, the sample bin is fixed in the inside of the furnace lining through bolts, and the side of the sample bin close to the furnace door is open; the gas permeable brick is arranged at the open position of the sample bin, and the outer side of the gas permeable brick is arranged in close contact with the inner wall of the sample bin; one end of the sample bin away from the furnace door is fixed with the output end of the gas injection mechanism through a joint, and the sample bin is integrally formed by using a heat-conducting material, when a sample is placed, the gas permeable brick can be taken out, then the sample is placed in the inside of the sample bin, and then the gas permeable brick is reset, and the heating efficiency of the sample can be ensured, and in addition, the inert or reactive gas can flow in one direction.
[0012] Further, the sample storage box further comprises a mounting frame and a fan blade, the mounting frame is fixed in the sample bin by bolts, and the fan blade is rotatably mounted on the mounting frame by a supporting bearing, and the fan blade faces the output end of the gas injection mechanism, so that the inert or reactive gas can uniformly act on the sample.
[0013] Compared with the prior art, the utility model has the beneficial effects that:
[0014] The utility model discloses a sample storage box, which can isolate the heating element from the sample, uniformly disperse heat to the bin wall, heat the sample by the heat conduction of the partition, reduce the hot spot, ensure the efficiency of the heating process, and make the inert or reactive gas uniformly act on the sample by the setting of the fan blade. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without the creative labor.
[0016] Figure 1 It is the structural schematic diagram of the utility model.
[0017] Figure 2 It is the sectional structure schematic diagram of the utility model.
[0018] Figure 3 It is the structural schematic diagram of the air extraction mechanism of the utility model.
[0019] Figure 4 It is the structural schematic diagram of the gas injection mechanism and the sample storage box of the utility model.
[0020] Figure 5 It is the structural schematic diagram of the air extraction mechanism of the utility model Figure 4 The local enlarged structural schematic diagram of " A " position in the utility model.
[0021] In the drawing:
[0022] 1-base, 2-furnace shell, 3-furnace lining, 4-furnace door, 5-heating element, 6-exhaust pipe, 7-first valve, 8-gas injection mechanism, 81-gas injection pipe, 82-pressure gauge, 83-third valve, 9-gas extraction mechanism, 91-gas extraction pipe, 92-vacuum pump, 93-gas delivery pipe, 94-second valve, 10-sample storage box, 101-sample bin, 102-air brick, 103-mounting frame, 104-fan. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0024] In the description of the present application, it should be understood that the terms "upper", "middle", "outer", "inner", "periphery" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0025] Please refer to Figures 1 to 5 As shown in the drawings, the present application is a vacuum box type atmosphere furnace with good temperature and atmosphere uniformity, which comprises a base 1, a furnace shell 2, a furnace lining 3, a furnace door 4, a heating element 5, an exhaust pipe 6, a first valve 7, a gas injection mechanism 8, a gas extraction mechanism 9 and a sample storage box 10. The upper side of the base 1 is fixed with the furnace shell 2 by bolts, wherein the inside of the furnace shell 2 is fixed with the furnace lining 3, and the side of the furnace shell 2 is rotatably installed with the furnace door 4 by a hinge. The inner wall of the furnace lining 3 is uniformly fixed with a plurality of heating elements 5 by bolts, wherein the heating elements 5 are electrically connected to an external control computer through data lines. The inside of the furnace lining 3 is fixed with the sample storage box 10 by bolts, and the inside of the furnace lining 3 is fixed with the exhaust pipe 6. One end of the exhaust pipe 6 communicates with the inside of the furnace lining 3, and the other end of the exhaust pipe 6 is arranged outside the furnace shell 2, wherein the first valve 7 is fixed on the exhaust pipe 6 outside the furnace shell 2. The inside of the base 1 is fixed with the gas injection mechanism 8, wherein the input end of the gas injection mechanism 8 is arranged outside the base 1. The output end of the gas injection mechanism 8 communicates with the inside of the sample storage box 10. The inside of the base 1 is fixed with the gas extraction mechanism 9, wherein the input end of the gas extraction mechanism 9 communicates with the inside of the furnace lining 3, and the output end of the gas extraction mechanism 9 is arranged outside the base 1.
[0026] Specifically, the air extraction mechanism 9 comprises an air extraction pipe 91, a vacuum pump 92, an air conveying pipe 93 and a second valve 94. The air extraction pipe 91 is fixed inside the furnace lining 3, with one end of the air extraction pipe 91 communicating with the inside of the furnace lining 3 and the other end of the air extraction pipe 91 being fixed to the input end of the vacuum pump 92 through a joint. The base 1 is fixed to the base 1 through bolts, and the output end of the vacuum pump 92 is fixed with the air conveying pipe 93 through a joint, with the other end of the air conveying pipe 93 being arranged outside the base 1, and the second valve 94 being fixed on the air conveying pipe 93 arranged outside the base 1. The vacuum pump 92 is electrically connected to an external control computer through a data line. In use, the vacuum pump can be started, and the second valve can be opened, so that the air extraction pipe extracts the gas inside the furnace lining, and the gas is discharged through the air conveying pipe, thereby forming a vacuum state inside the furnace lining.
[0027] Specifically, the air injection mechanism 8 comprises an air injection pipe 81, a pressure gauge 82 and a third valve 83. The air injection pipe 81 is fixed inside the base 1 through a pipe clamp, and one end of the air injection pipe 81 is fixed to the sample storage tank 10 through a joint. The other end of the air injection pipe 81 is arranged outside the base 1, and the pressure gauge 82 and the third valve 83 are fixed to the middle part of the air injection pipe 81. In use, the staff can fix the air injection pipe 81 to an external gas supply mechanism, then open the third valve 83, and then inject the corresponding inert or reactive gas into the inside of the sample storage tank 10 through the air injection pipe 81.
[0028] Specifically, the sample storage tank 10 comprises a sample bin 101 and a gas permeable brick 102. The sample bin 101 is fixed inside the furnace lining 3 through bolts, and the side of the sample bin 101 close to the furnace door 4 is open. The gas permeable brick 102 is placed at the open position of the sample bin 101, and the outer side of the gas permeable brick 102 is arranged in close contact with the inner wall of the sample bin 101. The other end of the sample bin 101 away from the furnace door 4 is fixed to the output end of the air injection mechanism 8 through a joint, and the sample bin 101 is integrally formed of a heat-conducting material. In use, the gas permeable brick 102 can be removed, the sample can be placed in the sample bin 101, and then the gas permeable brick 102 can be reset. The sample bin 101 can isolate the heating element 5 from the sample, and the heat is uniformly dispersed to the bin wall of the sample bin 101, and then the sample is heated by the heat-conducting separation layer, which significantly reduces the hot spots and ensures the efficiency of the heating process. In addition, the inert or reactive gas delivered by the air injection mechanism 8 enters the rear part of the sample bin 101, flows in one direction, and flows to the exhaust pipe 6 after passing through the gas permeable brick 102.
[0029] Specifically, the sample storage box 10 further comprises a mounting frame 103 and a fan blade 104, the mounting frame 103 is fixed in the sample chamber 101 by bolts, and the fan blade 104 is rotatably mounted on the mounting frame 103 by a support bearing, the fan blade 104 is opposite to the output end of the gas injection mechanism 8, when in use, the inert or reactive gas injected into the sample chamber 101 by the gas injection mechanism 8 drives the fan blade 104 to rotate, wherein the fan blade 104 disperses the inert or reactive gas during rotation, thereby making the inert or reactive gas uniformly act on the sample.
[0030] Referring to Figures 1-5 The utility model discloses a vacuum box type atmosphere furnace with good temperature and atmosphere uniformity, which has the working principle as follows: when in use, the furnace door 4 is opened, the sample is placed in the sample storage box 10, the furnace door 4 is closed, the vacuum state is formed in the furnace lining 3 by the air extraction mechanism 9, the air extraction mechanism 9 is closed, the gas injection mechanism 8 and the first valve 7 are opened, the inert or reactive gas is injected into the sample storage box 10 by the gas injection mechanism 8 and the external gas supply mechanism, and the inert or reactive gas is discharged through the exhaust pipe 6 after acting on the sample, and the sample can be heated by the heating element 5.
[0031] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0032] The preferred embodiments of the utility model disclosed above are only used for helping to explain the utility model. The preferred embodiments do not describe all the details, and the utility model is not limited to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical application of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.
Claims
1. A vacuum box-type atmosphere furnace having uniform temperature and atmosphere uniformity, comprising a base (1), a furnace shell (2), a furnace lining (3), a furnace door (4), a heating element (5), an exhaust pipe (6), a first valve (7), a gas injection mechanism (8), a gas extraction mechanism (9), and a sample storage box (10), characterized in that: The upper side of the base (1) is fixed with a furnace shell (2), wherein the inside of the furnace shell (2) is fixed with a furnace lining (3), and the side of the furnace shell (2) is rotatably installed with a furnace door (4); the inner wall of the furnace lining (3) is uniformly fixed with a plurality of heating elements (5); the inside of the furnace lining (3) is fixed with a sample storage box (10), and the inside of the furnace lining (3) is fixed with an exhaust pipe (6); one end of the exhaust pipe (6) communicates with the inside of the furnace lining (3), and the other end of the exhaust pipe (6) is arranged outside the furnace shell (2), wherein the first valve (7) is fixed on the exhaust pipe (6) outside the furnace shell (2); the inside of the base (1) is fixed with a gas injection mechanism (8), wherein the input end of the gas injection mechanism (8) is arranged outside the base (1); the output end of the gas injection mechanism (8) communicates with the inside of the sample storage box (10); the inside of the base (1) is fixed with a gas extraction mechanism (9), wherein the input end of the gas extraction mechanism (9) communicates with the inside of the furnace lining (3), and the output end of the gas extraction mechanism (9) is arranged outside the base (1).
2. The vacuum box-type atmosphere furnace of claim 1, wherein: The gas extraction mechanism (9) comprises a gas extraction pipe (91), a vacuum pump (92), a gas conveying pipe (93) and a second valve (94), the gas extraction pipe (91) is fixed in the inside of the furnace lining (3), wherein one end of the gas extraction pipe (91) communicates with the inside of the furnace lining (3), and the other end of the gas extraction pipe (91) is fixed with the input end of the vacuum pump (92); the base (1) is fixed with the vacuum pump (92), and the output end of the vacuum pump (92) is fixed with the gas conveying pipe (93), wherein the other end of the gas conveying pipe (93) is arranged outside the base (1), and the second valve (94) is fixed on the gas conveying pipe (93) outside the base (1).
3. A vacuum chamber-type atmosphere furnace with good temperature and atmosphere uniformity as described in claim 1, characterized in that: The gas injection mechanism (8) comprises a gas injection pipe (81), a pressure gauge (82) and a third valve (83), the gas injection pipe (81) is fixed in the inside of the base (1), and one end of the gas injection pipe (81) is fixed with the sample storage box (10); the other end of the gas injection pipe (81) is arranged outside the base (1), and the middle part of the gas injection pipe (81) is respectively fixed with the pressure gauge (82) and the third valve (83).
4. The vacuum box-type atmosphere furnace of claim 1, wherein: the furnace body is made of a material having a thermal conductivity of 20 W / mK or more. 5 The sample storage box (10) comprises a sample bin (101) and a gas permeable brick (102), the sample bin (101) is fixed in the inside of the furnace lining (3), and the side of the sample bin (101) close to the furnace door (4) is open; the gas permeable brick (102) is placed at the open position of the sample bin (101), and the outer side of the gas permeable brick (102) is arranged in close contact with the inner wall of the sample bin (101); one end of the sample bin (101) away from the furnace door (4) is fixed with the output end of the gas injection mechanism (8), and the sample bin (101) is integrally formed by using a heat-conducting material.
5. The vacuum box-type atmosphere furnace according to claim 4, wherein: the furnace body is provided with a plurality of the temperature control units; and the temperature control units are arranged in the furnace body in a staggered manner. 5 The sample storage box (10) further comprises a mounting bracket (103) and a fan blade (104), the mounting bracket (103) is fixed in the inside of the sample bin (101), and the mounting bracket (103) is rotatably installed with the fan blade (104), and the fan blade (104) faces the output end of the gas injection mechanism (8).