CN110017691B - High temperature body temperature check gauge furnace body and high temperature body temperature check gauge - Google Patents
High temperature body temperature check gauge furnace body and high temperature body temperature check gauge Download PDFInfo
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- CN110017691B CN110017691B CN201810019512.0A CN201810019512A CN110017691B CN 110017691 B CN110017691 B CN 110017691B CN 201810019512 A CN201810019512 A CN 201810019512A CN 110017691 B CN110017691 B CN 110017691B
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- 230000036760 body temperature Effects 0.000 title claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 63
- 238000009413 insulation Methods 0.000 claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 2
- 241001330002 Bambuseae Species 0.000 claims description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 2
- 239000011425 bamboo Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 description 10
- 239000010410 layer Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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- 229910052782 aluminium Inorganic materials 0.000 description 2
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- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
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- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/223—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves with a plurality of valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
- F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/521—Mechanical actuating means with crank, eccentric, or cam comprising a pivoted disc or flap
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
- F27B17/02—Furnaces of a kind not covered by any preceding group specially designed for laboratory use
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0003—Linings or walls
- F27D1/0033—Linings or walls comprising heat shields, e.g. heat shieldsd
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0043—Floors, hearths
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/0005—Cooling of furnaces the cooling medium being a gas
Abstract
The invention relates to a high-temperature stem body temperature calibrator and a high-temperature stem body temperature calibrator, which belong to the technical field of temperature calibration, wherein the furnace body comprises a constant temperature block (13) with a heating device, a heat insulation cylinder (14) and a cooling fan (16), and also comprises a base (11) arranged at the bottom of the furnace body, wherein the whole base is a box body with a downward opening as a mounting base of the heat insulation cylinder and the constant temperature block, and the cooling fan is mounted in a cavity at the lower part of the base; the heat insulation cylinder comprises an inner cylinder body (14-1) and an outer cylinder body (14-2) which are sleeved with a certain distance, and the inner cylinder body is of a closed double-layer structure. According to the invention, all parts of the furnace body are integrated into the module through the base, so that the module is convenient to detach in the temperature calibrator.
Description
Technical Field
The invention belongs to the technical field of temperature calibration, and particularly relates to a furnace body in a high-temperature trunk temperature calibrator and a trunk temperature calibrator with the furnace body.
Background
The high-temperature dry body temperature calibrator is used for calibrating the temperature measuring element, is widely applied to industrial sites, metering sites and laboratories of various industries, and has a relatively wide market.
The high-temperature dry body temperature calibrator is provided with a high-temperature furnace body, a furnace core of the high-temperature furnace body heats at high temperature in the use process of the calibrator, other elements in the calibrator are damaged by the high temperature of the furnace core, and a cooling air duct is usually arranged on the periphery of the furnace core to prevent the damage to the other elements in the calibrator caused by the temperature of the furnace core.
Therefore, how to set up more effective cooling wind channel, prevent the furnace core temperature diffusion is the technical problem that needs to solve at present.
Disclosure of Invention
The invention aims to provide a furnace body with a more effective cooling air duct, and further provides a high-temperature trunk temperature calibrator with the furnace body.
The high-temperature dry body temperature calibrator furnace body comprises a constant temperature block (13) and a heat insulation cylinder (14), and further comprises a base (11) arranged at the bottom of the furnace body, wherein the heat insulation cylinder (14) is arranged at the periphery of the constant temperature block (13) and is spaced from the constant temperature block (13) to form a cooling channel (C1), and the heat insulation cylinder (14) and the constant temperature block (13) are fixed on the base (11); the base (11) is provided with a vent hole which communicates with the cooling passage (C1).
The high-temperature dry body temperature calibrator furnace body further comprises a cooling fan (16), wherein the cooling fan (16) is arranged in a cavity of the base (11), and the cavity of the base (11) is communicated with the cooling channel (C1) through the vent hole.
The high-temperature dry body temperature calibrator furnace body is characterized in that the heat insulation cylinder (14) comprises an inner cylinder body (14-1) and an outer cylinder body (14-2) which are sleeved, the inner cylinder body is of a closed double-layer structure, and a hollow heat insulation cylinder body is formed by an inner wall, an outer wall and sealing plates at two ends; the inner cylinder body (14-1) is arranged at the outer side of the constant temperature block (13) and is separated from the constant temperature block (13) to form a cooling channel (C1), the outer cylinder body (14-2) is arranged at the outer side of the inner cylinder body (14-1) and is separated from the inner cylinder body to form a secondary cooling channel (C2), and the bottoms of the inner cylinder body (14-1) and the outer cylinder body (14-2) are fixed on the furnace body base (11).
The tops of the inner cylinder body (14-1) and the outer cylinder body (14-2) are clamped and fixed through a positioning block (15), and the positioning block (15) is provided with an air flow outlet (15-2) which is communicated with the cooling channel (C1) and the secondary cooling channel (C2).
The high-temperature dry body temperature calibrator furnace body, the terminal surface of base (11) fixed thermal-insulated section of thick bamboo (14) sets up support column mounting hole (11-2) and is used for installing support column (20) that support constant temperature piece (13), support column (20) top and constant temperature piece (13) fixed connection, support column (20) bottom card is solid in support column mounting hole (11-2).
The high-temperature dry body temperature calibrator comprises a high-temperature dry body temperature calibrator body, wherein an alignment groove (15-3) is formed in the lower portion of a positioning block (15), and the upper end of a heating rod (12) on a constant-temperature block (13) is clamped and fixed in the alignment groove (15-3).
The high-temperature dry body temperature calibrator furnace body is characterized in that the end face of the base (11) for fixing the heat insulation cylinder (14) is of a rib-shaped support (11-1) structure, a gap area between ribs is communicated with a cavity of the base (11), the rib support is in a bridge arch shape and arches from the side edge to the central part, and support column mounting holes (11-2) are formed in the strip-shaped support (11-1).
The end face of the base (11) for fixing the heat insulation cylinder (14) is provided with a plurality of strip-shaped bosses (11-5), and the outer cylinder (14-2) is sleeved on the outer side of the strip-shaped bosses (11-5) from top to bottom.
A plurality of outer cylinder limiting blocks (11-6) are uniformly distributed or symmetrically arranged among the strip-shaped bosses (11-5), and the outer cylinder limiting blocks (11-6) are positioned on the inner side or the outer side of the outer cylinder 14-2.
A plurality of protruding blocks (11-3) are distributed at the edge of the rib-shaped bracket (11-1), and the inner cylinder body (14-1) is sleeved on the outer side of the protruding blocks (11-3) from top to bottom and is fixed with the protruding blocks (11-3); a space is reserved between the convex block (11-3) and the strip-shaped convex table (11-5), and the space is matched with the space between the outer cylinder body and the inner cylinder body.
The base (11) is provided with a through groove (11-4) which is communicated with the cavity of the base (11) corresponding to the area between the outer cylinder (14-2) and the inner cylinder (14-1), and the through groove (11-4) is communicated with the secondary cooling channel (C2).
The high-temperature dry body temperature calibrator furnace body further comprises an air valve, wherein the air valve is fixed in the cavity of the base (11) and is positioned above the cooling fan (16).
The high-temperature dry body temperature calibrator comprises a base (11), wherein a plurality of limiting protrusions (11-10) with limiting guide on an air valve are arranged on the surface of a cavity of the base.
The high-temperature dry body temperature calibrator is characterized in that a plurality of assembly components (9) are arranged in the horizontal direction of the bottom of the base (11), a plurality of assembly components (9) are arranged on the outer side edge of the heat insulation cylinder (14), and the assembly components (9) are used for being connected with other components of the high-temperature dry body temperature calibrator.
The base (11) extends to one side to form a plane, and one or more ventilation openings (11-7) are arranged on the plane and are communicated with the outside air from the bottom of the furnace body but not communicated with the cooling channel (C1).
The invention also relates to a high-temperature dry body temperature calibrator comprising the furnace body.
By adopting the technical scheme, the invention utilizes the base to integrate all parts of the furnace body into a module form, so that the furnace body is convenient to detach in the temperature calibrator; the automatic centering of the constant temperature block is realized through the design of the positioning block and the base support column, so that the operation of disassembly, assembly and adjustment is avoided; the heat insulation cylinder is of a double-cylinder structure, the multi-airflow channel realizes rapid cooling of the furnace body, the inner cylinder body is of a closed double-layer structure, and the heat insulation cylinder is light in weight and good in heat insulation. The furnace body can be widely applied to a high-temperature dry body temperature calibrator.
Drawings
FIG. 1 is a schematic view of the furnace body and peripheral components of the present invention installed in a temperature calibrator;
FIG. 2A is an exploded view of the furnace structure of the present invention;
FIG. 2B is an external view of the assembled furnace body of the present invention;
FIG. 3 is a schematic view of a cross-sectional structure and an airflow channel of a furnace body according to the present invention;
FIG. 4A is a top view of the base structure of the furnace of the present invention;
FIG. 4B is a bottom view of the base structure of the furnace of the present invention;
FIG. 5 is a schematic view of the bottom structure of a positioning block in the furnace body of the invention;
FIG. 6 is a top view of the base and the outer cylinder of the heat insulation cylinder in the furnace body of the invention after being installed;
FIG. 7A is a schematic view showing a specific structure of a damper used in the furnace body of the present invention;
FIG. 7B is a perspective view showing a specific structure of a damper used in the furnace body of the present invention;
FIG. 7C is an exploded view of another embodiment of a damper for use in the furnace of the present invention;
FIG. 7D is a perspective view showing another specific structure of a damper used in the furnace body of the present invention;
FIG. 8 is a schematic view of multiple gas flow channels in a furnace according to the present invention;
FIG. 9 is an exploded view of the high temperature stem temperature calibrator of the present invention.
Reference numerals:
Complete machine component reference numerals: furnace body 1, control panel module 2, system board module 3, measuring board module 4, instrument lower support 5, instrument housing 6, assembly part 9;
Furnace body 1 part reference numerals: the device comprises a base 11, a heating rod 12, a constant temperature block 13, a heat insulation cylinder 14, a positioning block 15, a cooling fan 16, an air valve 17, an air valve II 18, an air valve III 19 and a support column 20;
Base 11 part number: the device comprises a bracket 11-1, a support column mounting hole 11-2, a lug 11-3, a through groove 11-4, a strip-shaped boss 11-5, an outer cylinder limiting block 11-6, a vent 11-7 and a positioning pin hole 11-8;
an inner cylinder 14-1, an outer cylinder 14-2, a rapid cooling channel C1, a secondary cooling channel C2, a heat dissipation channel C3,
Positioning block 15 part reference numerals: a central hole 15-1, an air flow outlet 15-2, and an alignment groove 15-3;
Air valve 17 part reference numerals: the device comprises a frame 17-1, blades 17-2, connecting rods 17-3, a motor 17-4, a motor mounting plate 17-5, mounting holes 17-6, a blade crankshaft 17-7, a blade shaft 17-8, a motor crankshaft 17-9, limit posts 17-10 and 17-11 and a clamping hook 17-12;
air valve two 18 part reference numerals: a support 18-1, a movable wind deflector 18-2, a fixed wind deflector 18-3, a rotary shaft 18-4, and a central shaft 18-5;
Air valve three 19 parts label: and a support frame 19-1, a sheet-like wind deflector 19-2.
Detailed Description
The invention provides a furnace body structure for a high-temperature trunk temperature calibrator. The whole furnace body 1 is in a modularized design, and is fixed with a control panel module 2 and a whole machine instrument lower support 5 which are adjacent to each other in the high-temperature trunk temperature calibrator through an assembly part 9 (such as a mounting screw), so that the furnace body 1 can be conveniently and rapidly disassembled and assembled, and the assembly is shown in fig. 1.
Referring to fig. 2A and 2B, the furnace body 1 includes: a base 11 arranged at the bottom, a constant temperature block 13 arranged at the upper part of the base, a heating rod 12, a heat insulation cylinder 14 arranged at the periphery of the constant temperature block, and a positioning block 15 arranged at the top. The heating rod 12 is arranged inside the constant temperature block 13 and is a heating element of the furnace body; the heat insulation cylinder 14 is arranged at the periphery of the constant temperature block 13 and is spaced from the constant temperature block; the base 11 is a mounting base of the heat insulation cylinder 14 and the constant temperature block 13; the positioning block 15 is connected with the upper part of the heat insulation cylinder 14 and is clamped with the heating rod 12 in the constant temperature block 13 in a position opposite to the heating rod (combining with fig. 2B).
As further shown in fig. 3, 4A and 4B, the base 11 has a box-like structure with a downward opening as a whole, and is used as a mounting base for the heat insulation cylinder 14 and the constant temperature block 13, and a cooling fan 16 is mounted in a cavity at the lower part of the box. In a preferred mode of the furnace body of the present invention, a damper 17 is further arranged in the furnace body 1 to block air flow from below the furnace body (even if the cooling fan 16 is turned off), the damper 17 and the cooling fan 16 are assembled in a box cavity of the base 11, the upward direction is the air inlet direction, and the damper 17 is located above the cooling fan 16. The box body of the base 11 is provided with guiding and positioning structures for installing the cooling fan 16 and the air valve 17, for example, as shown in fig. 4B, the surface of the lower cavity of the base 11 is formed with a plurality of (e.g. 6) limiting protrusions 11-10, and the limiting protrusions are used for limiting the air valve 17 in the process of installing the air valve 17 and can also have guiding functions, so that the air valve 17 is conveniently positioned at a corresponding position in the lower cavity of the base 11 (e.g. opposite to a constant temperature block 13 arranged at the upper part of the base 11); when the frames of the air valve 17 and the cooling fan 16 are square, the four corners of the frames are provided with mounting holes, the corresponding positions in the base 11 are provided with four threaded holes, and the air valve 17 and the cooling fan 16 are fixed in the box body cavity of the base 11 together by using screws.
With continued reference to fig. 4A, the top of the base 11 of the box-like structure is a rib-shaped support structure, a gap area between the ribs is communicated with the inner cavity of the box body, a support column mounting hole 11-2 is formed in the center of the support 11-1 for mounting a support column 20, the support column 20 supports the constant temperature block 13, the support column mounting hole 11-2 can be designed to be oblate to clamp the support column 20, and the support column 20 is fixedly connected with the lower portion of the constant temperature block 13. Preferably, the rib bracket 11-1 has a bridge arch shape, and is arched from the side to the center, so as to support and fix the support column 20, and improve the stress of the bracket 11-1 and reduce the deformation thereof. The structure of the bracket 11-1 is optimized in this way, so that the air flow strength can be increased, the air flow passage area can be increased, and the air flow resistance can be reduced. The central part arching is also beneficial to being separated from the centers of the air valve 17 and the cooling fan 16 which are arranged at the lower part of the bracket 11, and is beneficial to reducing the working temperature of the air valve 17, particularly the motor at the central part of the cooling fan 16.
In the furnace body base 11, the rib-shaped bracket 11-1 can be provided with various rib arrangement modes, and various types are required to be provided with the support column mounting holes 11-2 on the rib-shaped bracket 11-1.
Two positioning pin holes 11-8 are respectively formed in the horizontal direction of the middle positions of two opposite side surfaces of the bottom of the furnace body base 11 and are used for guiding and accurately positioning when the furnace body 1 is mounted on the lower support 5 of the whole machine instrument. The assembly parts 9 of the base 11 and the lower support 5 of the whole machine instrument can be arranged on two sides of the positioning pin holes 11-8 in a horizontal direction, and the assembly parts 9 of the bottoms of the four bases 11 in the horizontal direction are connected with the lower support 5 of the instrument (combining with figure 1).
Referring to fig. 3 and 2B, the heat insulating cylinder 14 is divided into an inner cylinder 14-1 and an outer cylinder 14-2 which are sleeved. With reference to fig. 2B, the inner cylinder 14-1 has a closed double-layer structure, and is a hollow heat insulation cylinder formed by an inner wall, an outer wall and sealing plates at two ends, wherein the hollow heat insulation cylinder can use static air between the two layers as a heat insulation belt, so that the heat insulation cylinder has the characteristics of light weight and good heat insulation, can effectively reduce the heat transfer of the constant temperature block 13 to surrounding parts, and greatly reduces the temperature of the surrounding parts; the outer cylinder 14-2 has a single-layer plate structure to facilitate rapid heat dissipation. The inner cylinder 14-1 is arranged outside the constant temperature block 13 with a space left, the outer cylinder 14-2 is arranged outside the inner cylinder 14-1 with a space left, the bottoms of the inner cylinder 14-1 and the outer cylinder 14-2 are fixed on the upper surface of the furnace body base 11, the top is clamped and fixed through a positioning block 15, and an air flow outlet 15-2 is left on the positioning block 15 (see fig. 5 and 6). The embodiment of the invention is not limited to the specific shape of the positioning block 15, and can realize the clamping function, and one or two fixing holes for fixing with the furnace body 1 can be respectively arranged at two ends of the positioning block 15. Referring to fig. 4A, four strip-shaped bosses 11-5 are distributed on the outer side of the upper surface of the furnace body base 11, and the length directions of the four strip-shaped bosses 11-5 are the same, so that an outer cylinder 14-2 of the heat insulation cylinder 14 is guided, positioned and fixed, and the outer cylinder 14-2 is sleeved on the outer side of the strip-shaped bosses 11-5 from top to bottom; in order to better guide the installation of the outer cylinder 14-2, the outer cylinder limiting blocks 11-6 can be additionally arranged in the peripheral connecting lines of the four strip-shaped bosses 11-5 distributed on the upper surface of the furnace body base 11, the deformation of the outer cylinder 14-2 can be limited and corrected, preferably, the outer cylinder limiting blocks 11-6 are arranged at the middle positions of the connecting lines of the two adjacent strip-shaped bosses 11-5 and are positioned at the inner side or the outer side of the outer cylinder 14-2, and a plurality of outer cylinder limiting blocks 11-6 are preferably symmetrically arranged in opposite sides when being arranged, and one part of the outer cylinder limiting blocks can be positioned at the inner side of the outer cylinder 14-2 while the other part of the outer cylinder limiting blocks are positioned at the outer side.
With continued reference to fig. 3 and 2B, four protrusions 11-3 are distributed on the edge of the rib-shaped bracket 11-1 on the upper surface of the furnace body base 11, and a mounting hole is formed on the outer side of each protrusion 11-3 for positioning and fixing the inner cylinder 14-1 of the heat insulation cylinder 14, the inner cylinder 14-1 is sleeved on the outer side of the protrusion 11-3 from top to bottom, and the inner cylinder 14-1 is fixed on the base 11 through the mounting hole formed on the protrusion 11-3 by using a fixing bolt. The bump 11-3 for fixing and positioning the inner cylinder 14-1 and the strip-shaped boss 11-5 for guiding, positioning and fixing the outer cylinder 14-2 are spaced by a distance which matches the distance between the outer cylinder 14-2 and the inner cylinder 14-1, and in the area around the bracket 11-1 formed by the distance of the base 11, through grooves 11-4 communicated with the cavity at the lower part of the base 1 are formed, and the length, the number and the positions of the through grooves 11-4 in the area are not limited, but are preferably uniformly distributed.
Thus, the heat insulation cylinder 14 and the constant temperature block 13 together form two independent air channels, wherein a cooling channel C1 is formed by the interval between the inner side surface of the inner cylinder 14-1 and the outer side surface of the constant temperature block 13, when the furnace body needs to be cooled, the lower cooling fan 16 works, a large amount of high-speed cold air is blown through the constant temperature block 13 and the inner wall of the inner cylinder 14-1, and heat is discharged upwards from the air flow outlet 15-2 of the positioning block 15 through the cooling channel C1. The space between the outer side surface of the inner cylinder 14-1 and the inner side surface of the outer cylinder 14-2 forms a secondary cooling channel C2, and the air from the lower part of the furnace body enters the secondary cooling channel C2 through the through groove 11-4 to naturally convect so as to further cool the inner cylinder 14-1, thereby achieving the purpose of effectively controlling the wall surface temperature of the outer cylinder 14-2. The schematic cross section of the furnace body and the cooling air flow distribution are shown in fig. 3.
In order to better maintain the stability of the furnace temperature, a preferred embodiment of the present invention is to install a damper 17 in the furnace 1 shown in fig. 3. The air valve 17 serves to cut off the air convection path of the rapid cooling channel C1 around the thermostatic block 13, preventing the convection air from affecting the temperature field of the thermostatic block 13. Any damper structure capable of achieving this function can be used in the furnace body 1 of the present invention. As a specific example, fig. 7A and 7B show a specific structure of the damper 17, which is not a limitation to other configurations of the damper 17, such as changing the outer shape, changing the blade form, and the like, according to the shape of the furnace body.
The damper 17 shown in fig. 7A and 7B includes a frame 17-1, a plurality of blades 17-2 disposed in the frame in parallel with each other, a link 17-3 connected to the plurality of blades, and a driving device such as a motor 17-4 connected to the link, the motor 17-4 being fixed to the frame 17-1.
Specifically, the frame 17-1 is square, and a plurality of through holes are formed in two opposite side walls thereof, so as to allow the blade 17-2 positioned between the two side walls to pass through the through holes and be erected on the two side walls, one of the two side walls having the through holes extends out of a motor mounting plate 17-5 for mounting the motor 17-4, and the motor mounting plate 17-5 and the frame may be integrally formed or fixedly connected. The four corners of the frame 17-1 are provided with mounting holes 17-6 for connecting and mounting with the bottom of the furnace body 1, the side length of the square frame is matched with the outer frame at the bottom of the furnace body 1, the side length of the frame 17-1 is 60 mm to 120 mm, so that the air valve is matched with the furnace body size of the dry body temperature calibrator, in one embodiment, the bottom of the furnace body 1 is square, the frame 17-1 of the air valve is square, and the side length size is 92 mm; in another embodiment, as shown in fig. 7B, hooks 17-12 are formed on the outer surface of one or more of the four side walls of the frame 17-1, respectively, for guiding and positioning when the cooling fan 16 is installed.
The blade 17-2 is a rectangular thin plate, one end (the end close to the connecting rod 17-3) of the blade is provided with a crankshaft 17-7, the other end of the blade is provided with a blade shaft 17-8, and the blade crankshaft 17-7, the blade 17-2 and the blade shaft 17-8 are integrally formed. The blade shafts 17-8 and the blade crankshafts 17-7 at the two ends of each blade 17-2 are respectively clamped into opposite through holes in the two side walls of the frame 17-1, so that the blades 17-2 are erected in the frame 17-1 and can rotate freely. The number of the blades 17-2 is not limited, and in a specific embodiment, the number of the blades is preferably 5.
The connecting rod 17-3 is provided with a plurality of through holes, the number of the through holes is the same as that of the blades 17-2, and the blade crankshafts 17-7 at one end of the blades are clamped into the through holes of the connecting rod. The plurality of blades 17-2 are connected with the connecting rod 17-3 in the same manner, and the movement of the connecting rod 17-3 brings the plurality of blades 17-2 to rotate together, so that the plurality of blades 17-2 move synchronously.
The motor 17-4 is mounted on a motor mounting plate 17-5, and one end of a motor crankshaft 17-9 is fixed to a rotation shaft of the motor, and the other end is connected to a connecting rod 17-3. On the motor mounting plate 17-5 and the air valve frame 17-1, there are each a limit post 17-10 and 17-11 for limiting the two limit positions of the rotation of the motor crankshaft 17-9, thereby limiting the rotation angle of the rotation shaft of the motor 17-4.
In the use process of the air valve 17, under the drive of the motor 17-4, the motor crankshaft 17-9 rotates around the rotation shaft of the motor to drive the connecting rod 17-3 to move, and then the blades 17-2 are driven by the plurality of blade crankshafts 17-7 to rotate synchronously with the motor crankshaft 17-9, in this embodiment, when the motor crankshafts 17-9 rotate to contact with the limit posts 17-11 on the air valve frame, the blade surfaces of all the blades 17-2 are parallel to the plane of the frame 17-1, and the air valve 17 is in a completely closed state, as shown in fig. 1; when the motor crankshaft 17-9 rotates to contact the limit posts 17-10 on the motor mounting plate 17-5, the blade faces of all the blades 17-2 are perpendicular to the plane of the frame 17-1, and the damper 17 is in a fully open state. By precisely controlling the rotation angle of the rotation shaft of the motor 17-4 between the two limiting posts 17-10 and 17-11, the rotation angle of the blade 17-2 can be precisely controlled through the motor crankshaft 17-9, the connecting rod 17-3 and the blade crankshaft 17-7, and the opening degree of the air valve 17 can be precisely controlled.
Referring to fig. 7C, another structural style of damper is provided, called damper two 18, which includes a support frame 18-1, a plurality of wind shields disposed inside the support frame, and a driving device. The inner edge of the supporting frame 18-1 is circular, the wind guard is fan-shaped, and can be divided into fixed wind guard 18-3 and movable wind guard 18-2 which are distributed alternately, a plurality of fixed wind guard 18-3 are uniformly distributed and fixed on the circular inner edge of the supporting frame 18-1 by the fan-shaped long sides, and a plurality of movable wind guard 18-2 are uniformly distributed and fixed on a central shaft 18-5 by the fan-shaped short sides. The driving device comprises a motor and a rotating shaft 18-4 connected with the motor, wherein the rotating shaft is connected with the rotating shaft 18-4 in the center of the movable wind deflector 18-2 and can drive the movable fan-shaped wind deflectors to rotate and move. The central shaft 18-5 and the rotating shaft 18-4 are coaxially sleeved and connected, a neutral area between two adjacent fixed wind shields 18-3 is exactly matched with the sector of the movable wind shield 18-2, a neutral area between two adjacent movable wind shields 18-2 is exactly matched with the sector of the fixed wind shield 18-3, when the fan-shaped fixed wind shields 18-3 and the fan-shaped movable wind shields 18-2 are spliced and distributed without shielding each other, the second wind valve 18 is in a closed state, and at the moment, the second wind valve stops the air flow from passing through the second wind valve. When the sector-shaped movable wind deflector 18-2 is rotated by the driving means until it is completely or partially overlapped with the sector-shaped fixed wind deflector 18-3 so that both are completely or partially shielded, the second damper 18 is in a completely or partially opened state, in which the damper allows the air flow to pass through itself completely or partially.
Referring to fig. 7D, a further structural style of damper, referred to as damper three 19, is provided, which includes a support frame 19-1, a plurality of sheet-like wind deflectors 19-2 disposed inside the support frame, and a driving device. The supporting frame 19-1 is square, the plurality of sheet-shaped wind shields 19-2 are parallel to each other and the side edges thereof are connected in sequence, for example, hinged, so that the included angle of the adjacent sheet-shaped wind shields 19-2 can be changed from 0 degrees to 180 degrees, thereby exhibiting a flat state or a folded state. Under the drive of the driving device, when the plurality of sheet-shaped wind shields 19-2 form an angle of 180 degrees with each other, that is, the plurality of sheet-shaped wind shields are sequentially tiled to form a plane, the three wind valves 19 are closed, the inner opening of the supporting frame 19-1 is completely covered by the plurality of sheet-shaped wind shields 19-2, and at the moment, the wind valves block the air flow passing through the wind valves. When the included angle between the plurality of sheet-shaped wind shields is smaller than 180, that is, the plurality of sheet-shaped wind shields 19-2 are folded to one side, the plurality of sheet-shaped wind shields cannot completely cover the opening inside the supporting frame 19-1, the supporting frame is formed with an opening at one side thereof, and the air valve three 19 is completely or partially opened according to the opening degree of the opening, at this time, the air valve allows the air flow to completely or partially pass through itself.
Similar to the damper 17, the damper two 18 and the damper three 19 may be assembled in the furnace body 1 shown in fig. 3 and 4B, and will not be described again here.
In order to be matched with the whole assembly of the temperature calibrator, the furnace body 1 in the invention is further optimized on the basis of the above form in the modular design:
Referring to fig. 4A in combination with fig. 2B and 8, the upper portion of the base 11 extends to one side of a plane, and one or more vents 11-7 communicating with the outside air from the bottom of the furnace body but not with the cooling channel C1 are opened in the plane. Thus, when the furnace body 1 is installed in the temperature calibrator, a space exists between the outer side of the furnace body 1 with the ventilation openings 11-7 on the base 11 and other parts in the calibrator, and an air flow channel C3 is formed at the space, so that heat dissipation is facilitated, and the influence of the furnace body 1 on other parts assembled in the calibrator, such as the control board module 2 and the like, is reduced.
Referring to fig. 4A in combination with fig. 1, the bottom of one side of the base 11 may be horizontally provided with one or more assembly parts 9, so that the base 11 may be fixed to the lower instrument support 5 through the assembly parts 9; the outer cylinder 14-2 of the heat insulation cylinder is also used as a shell of the furnace body 1, the outer cylinder 14-2 is made of an aluminum profile in a post-processing mode, and a plurality of lateral assembly parts 9 are arranged on one side face of the outer cylinder and are used for being connected with other adjacent module parts such as the control panel module 2, so that the outer cylinder 14-2 also serves as a support of the control panel module 2 in a compact space of the temperature calibrator and can be conveniently disassembled and assembled. The lateral assembly parts 9 are preferably arranged on the same side as the ventilation openings 11-7 of the base, so that an air flow channel C3 can be formed between the assembled furnace body 1 and the control panel module 2, and heat dissipation is facilitated.
Referring to fig. 2 in combination with fig. 3, 5 and 6, a positioning block 15 located at the upper part of the furnace body 1 is connected to the outer cylinder 14-2, and the constant temperature block 13 is straightened by the heating rod 12: the bottom of the positioning block 15 is provided with alignment grooves 15-3 corresponding to the heating rods 12, the number and the positions of the alignment grooves 15-3 are completely corresponding to the number and the positions of the heating rods 12, so that the top of the heating rods 12 assembled in the constant temperature block 13 can just stretch into the corresponding alignment grooves 15-3, thereby limiting the movement of the heating rods 12 and the constant temperature block 13 in the horizontal direction and realizing the righting of the constant temperature block; the middle part of the positioning block 15 is provided with a central hole 15-1 which is coaxial with and aligned with the central holes of the constant temperature block 13, the soaking block and the protection plate at the top of the whole instrument housing; by utilizing the precise matching of the positioning block 15 and the parts, the positions of the constant temperature block 13 and the furnace body 1 are precisely ensured. Through the design of locating piece 15, furnace body 1 no longer need be connected the location through other locating component in top and the frame on the complete machine dustcoat, does not contact between furnace body 1 top and the dustcoat to the heat conduction of furnace body through the outer frame of top locating component to complete machine shell cast aluminium has been disconnected, the effectual temperature that reduces outer frame and the dustcoat that links to each other with it.
Through the various optimized designs, the heat transfer from the high-temperature furnace body to the instrument housing 6 is greatly reduced, and the whole instrument housing can be formed by plastic materials, so that the material cost is reduced, and the scald possibly caused by the contact of an operator with the metal housing is greatly reduced.
In addition, the invention further makes an optimal design for the automatic righting function of the furnace body 1 to the constant temperature block 13: for example, when the base 11 and the constant temperature block 13 are installed, four-point cylinder positioning is adopted, namely, a support column 20 at the lower part of the constant temperature block 13 is fixedly connected with the constant temperature block 13, and the support column 20 and a support column installation hole 12-1 on the support 11-1 are positioned in a cylindrical flattening mode (flat groove); meanwhile, at the upper part of the constant temperature block 13, four alignment grooves 15-3 formed at the lower part of the positioning block 15 are nested at the upper ends of the heating rods 12 (four heating rods) on the constant temperature block 13, so that torsion deviation between the constant temperature block 13 and the base 11 can be effectively controlled.
For another example, the base is processed by a die casting process, and the outer cylinder 14-2 is processed by an extrusion molding process, so that the flatness and parallelism precision of the mounting surface are high.
For another example, the outer cylinder 14-2 and the base 11 are vertically mounted, for example, are in threaded connection in the vertical direction, guide and limit structures such as strip-shaped bosses 11-5 and limit blocks 11-6 (see fig. 4A and 6) are arranged on the base 11 on the inner side of the periphery of the outer cylinder 14-2, and the assembly precision of the outer cylinder is basically equivalent to the machining precision, so that the assembly error is eliminated.
The invention is also carefully designed in terms of airflow direction: firstly, an air flow channel, namely a cooling channel C1, for rapidly cooling the constant temperature block 13 is formed between the constant temperature block 13 and the inner cylinder 14-1 by controlling air supply through a cooling fan 16 and an air valve 17, and the cooling speed of the furnace body is greatly increased by optimizing the design of the furnace body base 11, effectively utilizing the inner cavity space of the box body of the base 11 and installing a fan with a larger size than the prior art. See the C1 channel shown in FIG. 8.
Second, the second air flow channel, namely the second cooling channel C2, is formed in the area among the cavity of the furnace body base 1, the outer frame of the cooling fan 16, the outer frame of the air valve 17, the inner cylinder 14-1 and the outer cylinder 14-2, when the furnace body works, the outside air entering the second cooling channel C2 can reduce the temperature of the inner cylinder 14-1 and the outer cylinder 14-2, and the heat transfer of the high-temperature furnace body to the whole machine is reduced. See the C2 channel shown in figure 8.
Third, as shown in fig. 8, a cooling channel C3 is additionally designed, and the cooling channel C3 is an air flow channel formed specifically between the outside of the heat insulation cylinder 14 of the furnace body 1 and other components in the apparatus through the ventilation opening 11-7 provided at one side of the base 11, for cooling other components assembled in the apparatus, such as the control board module 2 (see fig. 1).
The invention further provides a temperature calibrator, which comprises the furnace body. Fig. 9 shows the structure of a high-temperature dry body temperature calibrator, which comprises a furnace body 1, a control board module 2, a system board module 3, a measuring board module 4, an instrument lower support 5 and an instrument housing 6. The furnace body 1 assembled in the high temperature stem temperature calibrator is constructed as described above. It will be appreciated that fig. 9 shows only one form of temperature calibrator, and that the furnace of the present invention can be assembled in other forms of temperature calibrator as well, and need not be exemplified herein.
By adopting the design, the invention has the beneficial effects that:
1. The inner cylinder body is of a closed double-layer structure, and the heat insulation belt is made of static air between the two layers, so that the heat insulation belt has the characteristics of light weight and good heat insulation.
2. The furnace body has the function of automatically righting the constant temperature block.
3. The modularized design ensures that the furnace body and other parts of the product are completely independent, thereby effectively improving the convenience of production and maintenance and reducing the production and maintenance cost of the product.
4. Through exquisite overall arrangement, let the furnace body compacter, it is more convenient to use.
5. The independent air duct design ensures that the high-temperature air of the furnace body can not cause adverse effect on the working environment of other parts of the product, thereby reducing the high-temperature aging risk of electronic components. Meanwhile, the influence of heating of other parts on the furnace body is isolated, and the stability and the precision of the work of the furnace body are improved.
6. The constant temperature block can be automatically righted by the structure, so that the assembly and adjustment procedures are reduced, and the production efficiency is improved.
Claims (15)
1. The utility model provides a high temperature trunk temperature check gauge furnace body, includes constant temperature piece (13), thermal-insulated section of thick bamboo (14), its characterized in that:
The furnace body also comprises a base (11) arranged at the bottom of the furnace body, the heat insulation cylinder (14) is arranged at the periphery of the constant temperature block (13) and is separated from the constant temperature block (13) to form a cooling channel (C1), and the heat insulation cylinder (14) and the constant temperature block (13) are fixed on the base (11); the base (11) is provided with a vent hole which is communicated with the cooling channel (C1);
The heat insulation cylinder (14) comprises an inner cylinder body (14-1) and an outer cylinder body (14-2) which are sleeved, wherein the inner cylinder body is of a closed double-layer structure, and a hollow heat insulation cylinder body is formed by an inner wall, an outer wall and sealing plates at two ends; the inner cylinder body (14-1) is arranged at the outer side of the constant temperature block (13) and is separated from the constant temperature block (13) to form a cooling channel (C1), the outer cylinder body (14-2) is arranged at the outer side of the inner cylinder body (14-1) and is separated from the inner cylinder body to form a secondary cooling channel (C2), and the bottoms of the inner cylinder body (14-1) and the outer cylinder body (14-2) are fixed on the furnace body base (11).
2. The high temperature stem temperature calibrator furnace of claim 1, wherein: the cooling device further comprises a cooling fan (16), the cooling fan (16) is arranged in the cavity of the base (11), and the cavity of the base (11) is communicated with the cooling channel (C1) through the ventilation hole.
3. The high temperature stem temperature calibrator furnace of claim 1 or 2, wherein: the tops of the inner cylinder body (14-1) and the outer cylinder body (14-2) are clamped and fixed through a positioning block (15), and the positioning block (15) is provided with an air flow outlet (15-2) which is communicated with the cooling channel (C1) and the secondary cooling channel (C2).
4. The high temperature stem temperature calibrator furnace of claim 1 or 2, wherein:
The end face of the base (11) is provided with a support column mounting hole (11-2) for mounting a support column (20) for supporting the constant temperature block (13), the top end of the support column (20) is fixedly connected with the constant temperature block (13), and the bottom end of the support column (20) is clamped and fixed in the support column mounting hole (11-2).
5. A high temperature stem temperature calibrator furnace as defined in claim 3, wherein: the lower part of the positioning block (15) is provided with an alignment groove (15-3), and the upper end head of the heating rod (12) on the constant temperature block (13) is clamped and fixed in the alignment groove (15-3).
6. The high temperature stem temperature calibrator furnace of claim 1, 2 or 5, wherein:
The end face of the base (11) for fixing the heat insulation cylinder (14) is of a rib-shaped support (11-1) structure, a gap area between ribs is communicated with a cavity of the base (11), the rib support is in a bridge arch shape and arches from the side edge to the center, and support column mounting holes (11-2) are formed in the strip-shaped support (11-1).
7. The high temperature stem temperature calibrator furnace of claim 1, 2 or 5, wherein:
The end face of the base (11) for fixing the heat insulation cylinder (14) is provided with a plurality of strip-shaped bosses (11-5), and the outer cylinder (14-2) is sleeved on the outer side of the strip-shaped bosses (11-5) from top to bottom.
8. The high temperature stem temperature calibrator furnace of claim 7, wherein: a plurality of outer cylinder limiting blocks (11-6) are uniformly distributed or symmetrically arranged among the strip-shaped bosses (11-5), and the outer cylinder limiting blocks (11-6) are positioned on the inner side or the outer side of the outer cylinder 14-2.
9. The high temperature stem temperature calibrator furnace of claim 1,2, 5, or 8, wherein: a plurality of protruding blocks (11-3) are distributed at the edge of the rib-shaped bracket (11-1), and the inner cylinder body (14-1) is sleeved on the outer side of the protruding blocks (11-3) from top to bottom and is fixed with the protruding blocks (11-3); a space is reserved between the convex block (11-3) and the strip-shaped convex table (11-5), and the space is matched with the space between the outer cylinder body and the inner cylinder body.
10. The high temperature stem temperature calibrator furnace of claim 1, 2, 5, or 8, wherein:
The base (11) is provided with a through groove (11-4) which is communicated with the cavity of the base (11) corresponding to the area between the outer cylinder (14-2) and the inner cylinder (14-1), and the through groove (11-4) is communicated with the secondary cooling channel (C2).
11. The high temperature stem temperature calibrator furnace of claim 1, 2, 5, or 8, wherein:
The cooling fan also comprises an air valve, wherein the air valve is fixed in the cavity of the base (11) and is positioned above the cooling fan (16).
12. The high temperature stem temperature calibrator furnace of claim 1, 2, 5, or 8, wherein:
the surface of the cavity of the base (11) is provided with a plurality of limiting protrusions (11-10) which are used for limiting and guiding the air valve.
13. The high temperature stem temperature calibrator furnace of claim 1, 2, 5, or 8, wherein:
The high-temperature dry body temperature calibrator is characterized in that a plurality of assembly components (9) are arranged in the horizontal direction of the bottom of the base (11), a plurality of assembly components (9) are arranged on the outer side edge of the heat insulation cylinder (14), and the assembly components (9) are used for being connected with other components of the high-temperature dry body temperature calibrator.
14. The high temperature stem temperature calibrator furnace of claim 1, 2, 5, or 8, wherein:
The base (11) extends to one side to form a plane, and one or more ventilation openings (11-7) are arranged on the plane and are communicated with the outside air from the bottom of the furnace body but not communicated with the cooling channel (C1).
15. A high temperature stem temperature calibrator comprising the furnace of any one of claims 1 to 14.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810019512.0A CN110017691B (en) | 2018-01-09 | 2018-01-09 | High temperature body temperature check gauge furnace body and high temperature body temperature check gauge |
| EP19737990.2A EP3739312B1 (en) | 2018-01-09 | 2019-01-07 | High temperature dry block temperature calibrator |
| PCT/CN2019/070623 WO2019137331A1 (en) | 2018-01-09 | 2019-01-07 | High temperature dry block temperature calibrator |
| US16/960,990 US11959814B2 (en) | 2018-01-09 | 2019-01-07 | High-temperature dry block temperature calibrator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810019512.0A CN110017691B (en) | 2018-01-09 | 2018-01-09 | High temperature body temperature check gauge furnace body and high temperature body temperature check gauge |
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| CN110017691A CN110017691A (en) | 2019-07-16 |
| CN110017691B true CN110017691B (en) | 2024-04-23 |
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| US7785000B2 (en) * | 2007-09-11 | 2010-08-31 | Fluke Corporation | Venting system for drywell calibrators |
| DK2399107T3 (en) * | 2009-02-19 | 2013-03-11 | Ametek Denmark As | Temperature calibration device, calibration block and method for calibrating a temperature probe |
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| JPH08247861A (en) * | 1995-03-08 | 1996-09-27 | Yamari Sangyo Kk | Temperature calibrating jar and its temperature stabilizing method |
| CN102095528A (en) * | 2010-12-07 | 2011-06-15 | 西华大学 | Temperature sensor calibration device |
| EP2835623A1 (en) * | 2013-08-08 | 2015-02-11 | Tradinco Instrumenten-Apparaten B.V. | Temperature calibration arrangement and calibration oven comprising such an arrangement |
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