CN201532334U - Heating device for heat digestion system - Google Patents
Heating device for heat digestion system Download PDFInfo
- Publication number
- CN201532334U CN201532334U CN2009202470557U CN200920247055U CN201532334U CN 201532334 U CN201532334 U CN 201532334U CN 2009202470557 U CN2009202470557 U CN 2009202470557U CN 200920247055 U CN200920247055 U CN 200920247055U CN 201532334 U CN201532334 U CN 201532334U
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- Prior art keywords
- heating
- graphite
- aluminium sheet
- graphite block
- aluminum plate
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- Expired - Lifetime
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Abstract
The utility model relates to a heating device used for a heat digestion system, which comprises a graphite block at the top end, wherein a thermal pad is installed between the graphite block and a heating aluminum plate below the graphite block. The utility model has the advantages that the heating aluminum plate adopts a stainless steel heating coil cast as a heating material arranged in the aluminum plate, therefore, the upper limit value of the heating temperature is increased, the heating temperature can be controlled between 80 DEG C to 450 DEG C, and the service life is prolonged; the contact area (to enhance the fitness) between the heating aluminum plate and the graphite block is increased through the thermal pad, and the heat transfer efficiency is further improved; meanwhile, due to the existence of the thermal pad, the requirement of machining plainness of the contact surface between the heating aluminum plate and the graphite block is lowered, therefore, the quite good heat transfer effect can be achieved; and the graphite block is an isostatic pressure graphite, thereby greatly improving the temperature uniformity of the common graphite or the high-purity graphite.
Description
Technical field
The utility model relates to a kind of hot counteract appearance heating arrangement, and the electric heating counteract appearance is to be used for being fit to the middle and high end Specimen eliminating and the evaporating of laboratory environment for the user provides intelligent degree height, easy to use, outward appearance.At kjeldahl determination, widespread use in the methods such as COD is particularly suitable for food, relevant industries such as coating, environmental protection.Heating arrangement is the critical piece of electric heating counteract appearance.
Background technology
Along with Environmental Protection in China, the raising of hygiene medical treatment, Food Inspection level, the heavy demand that chemical analysis instrument occurs, the electric heating counteract appearance has formally catered to the demand of Chinese market, in the high speed development.Present electric heating counteract appearance adopts heating arrangement shown in Figure 1, installation thin film heater (Electric radiant Heating Film) 2 below graphite block 1, adopt between two parts high-temp glue sticking mutually and, when energising, the thin film heater evolution of heat is opposite to graphite block 1 and heats.On graphite block 1, be provided with a plurality of equally distributed grooves (half hole, not shown).The shortcoming of its existence is: 1, thin film heater is short serviceable life, the price height; 2, heating-up temperature is lower, is up to 200 ℃.
Summary of the invention
The purpose of this utility model just provides a kind of hot counteract appearance heating arrangement, to solve the thin film heater weak point in serviceable life that prior art exists, the high and lower problem of heating-up temperature of price.
The technical solution of the utility model is: comprise the graphite block on top, it is characterized in that: described graphite block and below the heating aluminium sheet between heat conductive pad is housed.
Described graphite block is made by isostatic pressing formed graphite; Described heat conductive pad is made by the high thermal conductivity coefficient flexible material.
Described heating aluminium sheet is made of heating coil and aluminium sheet, and this heating coil is embedded in the aluminium sheet, the power supply terminal that is provided with heating coil in the bottom or a side of this heating aluminium sheet.
Described aluminium sheet adopts highly purified cast aluminum.
Be provided with several legs in the bottom of described heating aluminium sheet.
The utility model has the advantages that: the heating aluminium sheet adopts the casting of stainless steel heating coil to serve as exothermic material in aluminium sheet, has improved the higher limit of heating-up temperature, and heating-up temperature can be between 80 ℃～450 ℃, and improved serviceable life.Improve the contact area (increase compatible degree) that heats between aluminium sheet and the graphite block by heat conductive pad, strengthen heat transfer efficiency.Because the existence of heat conductive pad is arranged, also reduced the processing plane degree requirement of heating aluminium sheet and graphite block surface of contact, thereby can reach goodish heat-transfer effect simultaneously.Graphite block adopts isostatic pressing formed graphite, has improved common graphite or high purity graphite temperature homogeneity greatly.
Description of drawings
Fig. 1 be prior art add the heating seed cut-open view;
Fig. 2 is sectional structure synoptic diagram of the present utility model (the A-A cut-open view of Fig. 3);
Fig. 3 is the vertical view of Fig. 2.
Embodiment
Referring to Fig. 1～Fig. 3, the utility model from top to bottom three parts constitutes: graphite block 1, heat conductive pad 3, heating aluminium sheet 4, at the upper surface that heats aluminium sheet 4 heat conductive pad 3 is set, and at this graphite block 1 is set above the heat conductive pad 3.On graphite block 1, be provided with a plurality of equally distributed grooves (half hole) 11.
Described graphite block 1 adopts isostatic pressing formed graphite, and the heat transfer coefficient of this graphite on all directions wants uniformly many than other graphite, thereby guarantees the temperature uniformity between graphite block 1 each hole.
Described heat conductive pad 3 is the flexible heat conductive pads of a kind of existing novel high thermal conductivity coefficient, and its thickness increases as required or reduces, generally between 0.10～0.25mm.Heat conductive pad 3 can be buied (there is production in Xi Mandun company in Beijing) from market.
Described heating aluminium sheet 4 is made of the higher aluminium sheet of the outer casting purity of heating coil (heating tube is by the stainless steel outer packed shell of resistance wire, and the magnesium oxide thing is filled in the centre), just heating coil is cast in the aluminium sheet.A bottom or a side at heating aluminium sheet 4 are provided with power supply terminal 5, are provided with several legs 6 in the bottom of heating aluminium sheet 4.On the power supply terminal 5 of heating plate 4, connect heating power supply during use.Because the thermal conductivity of aluminium is very high, so this heating aluminium sheet 4 also has goodish temperature homogeneity.If the even type of temperature of aluminium sheet can be further improved in the path of suitable calculating heating coil.Because, therefore heating the cast aluminium of aluminium sheet 4 usefulness more than 600 ℃, the fusing point of fine aluminium should select the high aluminium of purity as much as possible, to improve the heating-up temperature upper limit.
Key of the present utility model is that heating aluminium sheet 4 adopts 41 castings of stainless steel heating coil to serve as exothermic material in aluminium sheet 42.(softer by the contact area that increase heat conductive pad 3 improves between heating aluminium sheet 4 and the graphite block 1 because of the heat conductive pad quality, under the extruding of two kinds of hard materials, can produce distortion, thereby rough two faces can fully be contacted by heat conductive pad), strengthen heat transfer efficiency.Because the existence of heat conductive pad 3 is arranged, also reduced of the processing plane degree requirement of heating aluminium sheet 4, thereby can reach goodish heat-transfer effect simultaneously with graphite block 1 surface of contact.Graphite block 1 adopts isostatic pressing formed graphite, has improved common graphite or high purity graphite temperature homogeneity greatly.Owing under the chemical laboratory condition, the corrosion resistance of instrument is had relatively high expectations, adopt the graphite material decay resistance better.Can between the heating coil gap below the heating aluminium sheet 4, be provided with groove 7.
Claims (5)
1. hot counteract appearance heating arrangement comprises it is characterized in that the graphite block on top: described graphite block and below the heating aluminium sheet between heat conductive pad is housed.
2. hot counteract appearance heating arrangement according to claim 1, it is characterized in that: described graphite block is made by isostatic pressing formed graphite; Described heat conductive pad is made by the high thermal conductivity coefficient flexible material.
3. hot counteract appearance heating arrangement according to claim 1 and 2, it is characterized in that: described heating aluminium sheet is made of heating coil and aluminium sheet, this heating coil is embedded in the aluminium sheet, the power supply terminal that is provided with heating coil in the bottom or a side of this heating aluminium sheet.
4. hot counteract appearance heating arrangement according to claim 3, it is characterized in that: described aluminium sheet adopts highly purified cast aluminum.
5. hot counteract appearance heating arrangement according to claim 1 is characterized in that: be provided with several legs in the bottom of described heating aluminium sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202470557U CN201532334U (en) | 2009-11-17 | 2009-11-17 | Heating device for heat digestion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202470557U CN201532334U (en) | 2009-11-17 | 2009-11-17 | Heating device for heat digestion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201532334U true CN201532334U (en) | 2010-07-21 |
Family
ID=42527737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202470557U Expired - Lifetime CN201532334U (en) | 2009-11-17 | 2009-11-17 | Heating device for heat digestion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201532334U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106716124A (en) * | 2014-09-13 | 2017-05-24 | 安捷伦科技有限公司 | Gas chromatography (gc) column heater |
| US10401331B2 (en) | 2014-09-13 | 2019-09-03 | Agilent Technologies, Inc. | Gas chromatography (GC) column heater |
-
2009
- 2009-11-17 CN CN2009202470557U patent/CN201532334U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106716124A (en) * | 2014-09-13 | 2017-05-24 | 安捷伦科技有限公司 | Gas chromatography (gc) column heater |
| US10401331B2 (en) | 2014-09-13 | 2019-09-03 | Agilent Technologies, Inc. | Gas chromatography (GC) column heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING LABTECH INSTRUMENT CO., LTD. Free format text: FORMER NAME: BEIJING LABTECH LTD. |
|
| CP03 | Change of name, title or address |
Address after: 101312 Beijing city B District of Shunyi District Airport Industrial Zone No. 6 Anqing Street Patentee after: Beijing Labtech Instrument Co., Ltd. Address before: 101312 No. 6, Anqing Avenue, B District, Tianzhu Airport Industrial Zone, Beijing, Shunyi District Patentee before: Beijing LabTech Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100721 |
|
| CX01 | Expiry of patent term |