CN117652703A - Sand bath standard test piece and method for detecting heat transfer performance of central heating smoking set - Google Patents
Sand bath standard test piece and method for detecting heat transfer performance of central heating smoking set Download PDFInfo
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- CN117652703A CN117652703A CN202211006574.0A CN202211006574A CN117652703A CN 117652703 A CN117652703 A CN 117652703A CN 202211006574 A CN202211006574 A CN 202211006574A CN 117652703 A CN117652703 A CN 117652703A
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- smoking set
- central heating
- sand
- tubular member
- thermocouple
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 124
- 230000000391 smoking effect Effects 0.000 title claims abstract description 98
- 239000004576 sand Substances 0.000 title claims abstract description 90
- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 238000012546 transfer Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000003780 insertion Methods 0.000 claims abstract description 26
- 230000037431 insertion Effects 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims 1
- 235000019504 cigarettes Nutrition 0.000 abstract description 13
- 241000208125 Nicotiana Species 0.000 abstract description 5
- 235000002637 Nicotiana tabacum Nutrition 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 235000019505 tobacco product Nutrition 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000001931 thermography Methods 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/20—Devices using solid inhalable precursors
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
- A24F40/53—Monitoring, e.g. fault detection
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
- A24F40/57—Temperature control
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/80—Testing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention belongs to the technical field of heating smoking sets, and particularly relates to a sand bath standard test piece and a method for detecting heat transfer performance of a central heating smoking set. The sand bath standard test piece comprises: the upper end opening and the lower end of the tubular member are provided with bottom walls, sand grains are filled in the tubular member, and thermocouple insertion holes are formed in the side walls or the bottom walls of the tubular member; a thermocouple movably inserted into or withdrawn from the thermocouple insertion hole. The invention provides a method for using a test standard component for the first time, and detects the heat transfer performance of a central heating smoking set. The test standard part does not select cigarettes, but selects sand grains, and the sand grains have the advantages of known specific heat, uniform filling, controllable gaps, difficult abrasion, difficult bonding, stable physicochemical properties and low cost. The gaps between the sand particles also simulate the gaps between the cut tobacco very well. Therefore, the sand grain is used for manufacturing the sand bath standard test piece, so that the sand bath standard test piece is simpler and more convenient for batch detection.
Description
Technical Field
The invention belongs to the technical field of heating smoking sets, and particularly relates to a sand bath standard test piece and a method for detecting heat transfer performance of a central heating smoking set.
Background
The traditional cigarettes release nicotine and fragrance by directly burning tobacco, so that the demands of consumers are met, and in recent years, along with the improvement of health consciousness of people, heating of non-burning cigarettes is realized. The heating non-burning cigarette is a novel tobacco product which is obtained by heating the tobacco product by using a matched heating smoking set and not burning the tobacco product, and has the characteristics of reducing tar and reducing harm compared with the traditional cigarette while meeting the smoking requirement of consumers. It can be seen that the heated non-combustible cigarette comprises two parts, namely a smoking set and a tobacco product, and the smoking set quality directly determines the smoking experience of consumers on the heated non-combustible cigarette. There are many factors that affect the quality of the smoking article, but the most important factor is the heat transfer performance of the heating process, which directly affects the release of tobacco products.
At present, the method for measuring the heat transfer performance of the heating smoking set mainly comprises an infrared thermal imaging method and a thermocouple direct measurement method. The infrared thermal imaging method can only measure the temperature field distribution in balance, can not timely measure the temperature fluctuation (heat transfer performance) of the smoking set in the heating process of the tobacco products, is larger in environmental factors, and needs to pass through the smoking set shell when measuring the smoking set, and needs to replace a new tobacco product (a standard test piece is needed) when measuring the smoking set, so that the effect is larger. The thermocouple directly measures the temperature of the heating element conveniently and quickly, but the thermocouple only clings to the surface of the heating element to measure the surface temperature, the temperature outside the surface cannot be measured, and the temperature field cannot be measured; in a narrow space of the heating cavity, the thermocouple is difficult to install, and large-scale batch detection is inconvenient; thermocouples measure the temperature directly rather than the total heat generation, and require conversion, which is not easy.
Therefore, both of these conventional measurement methods cannot meet the judgment of the heat transfer performance of the smoking set.
The present invention has been made to solve the above problems.
Disclosure of Invention
A first aspect of the present invention provides a sand bath standard test piece comprising:
the device comprises a tubular member 1, wherein the upper end of the tubular member 1 is provided with an opening, the lower end of the tubular member 1 is provided with a bottom wall, sand grains are filled in the tubular member 1, and a thermocouple insertion hole 1-1 is formed in the side wall or the bottom wall of the tubular member;
a thermocouple 2 which is movably inserted into or withdrawn from the thermocouple insertion hole 1-1.
Preferably, the sand bath standard test piece comprises a base 3, wherein the base 3 is used for supporting and accommodating the tubular piece 1, a cavity 6 is arranged on the outer wall of the tubular piece 1, and the cavity 6 is used as a container part of a heating pipe wall of a smoking set.
Preferably, the sand bath standard test comprises: the sealing cover 4 is arranged at the upper end of the tubular piece 1, a heating element insertion hole 4-1 is arranged in the center of the sealing cover 4, and a central heating element of a heating smoking set to be detected is inserted into the heating element insertion hole 4-1.
Preferably, the sand bath standard test comprises: and a heat insulation device 5 positioned below the tubular member 1, wherein the heat insulation device 5 insulates the tubular member 1 from heat.
Preferably, the grain diameter of the sand grains is 0.2-0.6 mm. The sand grain of the invention is sand.
Preferably, the height of the sand is 2/3-49/50 of the height of the cavity in the tubular member 1, and the resistance is small when the heating plate is inserted.
Of course, the height of the sand particles is equal to the height of the cavity in the tubular member 1, and the solution of the invention can be realized, and only the resistance is large when the heating plate is inserted, the space above the sand particles in the sealing cover 4 is required to be larger than or equal to the volume of the heating plate.
Preferably, in the space defined by the inner cavity of the tubular member 1 and the sealing cover 4, the volume not occupied by sand particles is larger than or equal to the volume of the heating plate of the central heating smoking set to be measured.
A second aspect of the present invention provides a method of detecting heat transfer performance of a central heating smoking set using the sand bath standard test piece of any one of the first aspect, the method comprising the steps of:
step 1, inserting a central heating element of a central heating smoking set in the same batch into a sand grain fixed position in a tubular piece 1 in a sand bath standard test piece in any one of claims 1 to 5 in an inverted downward mode, wherein the tubular piece 1 is accommodated in a heating pipe of the central heating smoking set, and a heating pipe wall of the central heating smoking set is positioned on the periphery of the tubular piece 1;
step 2, inserting the thermocouple 2 into a specific position in sand inside the tubular member 1 through the thermocouple insertion hole 1-1;
step 3, starting the central heating smoking set, collecting a temperature change curve through the thermocouple 2, closing the central heating smoking set, and withdrawing the thermocouple 2 from the thermocouple insertion hole 1-1;
step 4, heating the smoking set by adopting the same batch of different centers, and repeating the steps 1-3 for a plurality of times to obtain a standard temperature curve range;
and 5, collecting temperature change curves of the central heating smoking sets to be detected in the same batch according to the steps 1-3, if the temperature change curves are within the standard temperature curve range of the step 4, the heat transfer performance of the central heating smoking sets meets the requirements, and if the temperature change curves are not within the standard temperature curve range of the step 4, the heat transfer performance of the central heating smoking sets does not meet the requirements.
The collection in the step 4 is carried out for 3 to 10 times.
Each time the temperature change curve is acquired according to steps 1 to 3, it is necessary to wait for the sand in the tubular member 1 to be completely cooled.
Preferably, in step 3, when the thermocouple 2 is withdrawn from the thermocouple insertion hole 1-1, the tip of the thermocouple 2 abuts against the outside of the thermocouple insertion hole 1-1 to prevent sand particles in the tubular member 1 from leaking out.
Preferably, in step 3, before the central heating smoking set is started, the air inlet of the central heating smoking set is blocked to prevent heat dissipation.
Preferably, when the result of step 5 is: when the heat transfer performance of the central heating smoking set meets the requirement, the following operations are carried out:
step 6, heating the smoking set by adopting the same batch of different centers, and repeating the steps 1-3 for a plurality of times to obtain the fluctuation range of the standard temperature curve as the standard range;
if the fluctuation range of the temperature change curve of the central heating smoking set to be detected in the same batch is within the standard range, the heat transfer performance of the central heating smoking set meets the requirement of the fluctuation range;
if the fluctuation range of the sand bath temperature change curve of the central heating smoking set to be detected in the same batch is not within the standard range, the heat transfer performance of the central heating smoking set does not meet the requirement of the fluctuation range.
Preferably, in step 6, the fluctuation range of the standard temperature curve is the maximum value or the average value of the fluctuation range of the standard temperature curve of the heating smoking set with different centers in the same batch.
Preferably, the heat transfer performance of the central heating smoking set is considered to be acceptable when the heat transfer performance of the central heating smoking set meets both the requirements of step 5 and further meets the requirements of step 6.
The technical proposal can be freely combined on the premise of no contradiction.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a method for using a test standard component for the first time, and detects the heat transfer performance of a central heating smoking set. In addition, the test standard component does not select cigarettes, but selects sand grains, and the sand grains with uniform granularity and the diameter of 0.2-0.6 mm are preferred. The sand grains have the advantages of known specific heat, uniform filling, controllable gaps, difficult abrasion, difficult adhesion, stable physicochemical properties and low cost.
In addition, the bulk density and specific heat of the sand grains are stable, the sand grains are not decomposed, no pollutant is generated, the sand grains are very suitable for being used as a test standard part for batch detection of smoking sets, and gaps among the sand grains also simulate gaps among tobacco shreds well. The sand grains are used for manufacturing sand bath standard test pieces, so that the sand bath standard test pieces are simpler and more convenient for batch detection.
If a real cigarette is used as a standard test piece for heating measurement, the following problems exist: 1. the specific heat and filling density of the tobacco shreds are different and are not easy to control, and when the tobacco shreds are used as standard test pieces for batch detection of cigarettes, the results are poor in comparability; the cigarette is easy to damage after repeated use, and is not suitable for being used as a standard test piece for long-term repeated use; 2. smoke condensate, local burnt matters, residues and the like can pollute a smoke tool to be measured in the measuring process; 3. the property of the cigarette is changed after thermal decomposition, and the cigarette cannot be repeatedly used.
2. The sand bath standard test piece is suitable for detecting the central heating smoking set. After the heating element is assembled to the smoking set, the heating element is inserted into the sand bath standard test upside down, and the hot air flows from bottom to top, so that the heat dissipation can be avoided by utilizing the heat insulation measure of the central heating smoking set. In addition, the heat insulation device 5 of the sand bath standard test piece can also avoid the influence of heat loss.
3. The method is convenient for realizing batch detection.
4. The method for inserting the heating element upside down into the standard test of the sand bath can also avoid the sand leakage phenomenon when the test standard component is inserted into the smoking set.
Drawings
Fig. 1 shows a range of a standard temperature change curve of a smoking set according to a first embodiment.
Fig. 2 is a temperature change curve of the prototype 1 of the first embodiment.
Fig. 3 is a graph showing the temperature change of the prototype 2 according to the first embodiment.
Fig. 4 is a cross-sectional view of a sand bath standard test piece with the thermocouple 2 inserted into the tubular member 1 in the first embodiment.
Fig. 5 is a cross-sectional view of the sand bath standard test piece with the thermocouple 2 extended into the tubular member 1 in the first embodiment, which is 90 degrees different from the cross-sectional angle of fig. 4.
Fig. 6 is a cross-sectional view of a central heating element inserted into a sand bath standard test piece at the time of heat transfer performance detection of a central heating smoking set.
Fig. 7 is a cross-sectional view of the central heating element inserted into the sand bath standard test piece at the time of heat transfer performance detection of the central heating smoking set, which is different from the cross-sectional angle of fig. 6 by 90 degrees.
List of reference numerals:
1. the pipe-shaped part comprises a pipe-shaped part 1-1, a thermocouple inserting hole 2, a thermocouple 3, a base 4, a sealing cover 4-1, a heating element inserting hole 5, a heat insulation device 6 and a cavity.
Detailed Description
It will be appreciated by those skilled in the art that the following examples are illustrative of the present invention and should not be construed as limiting the scope of the invention. The specific techniques or conditions are not identified in the examples and are performed according to techniques or conditions described in the literature in this field or according to the product specifications. The materials or equipment used are conventional products available from commercial sources, not identified to the manufacturer.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "coupled" to another element, it can be directly coupled to the other element or intervening elements may also be present. Further, "coupled" as used herein may include wirelessly coupled.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more. The orientation or state relationship indicated by the terms "inner", "upper", "lower", etc. are orientation or state relationship based on the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the invention.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "coupled," and "provided" are to be construed broadly, and may be, for example, fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically coupled; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention is understood by those of ordinary skill in the art according to the specific circumstances.
It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring to fig. 1, a sand bath standard test piece, the sand bath standard test piece comprising:
the device comprises a tubular member 1, wherein the upper end of the tubular member 1 is open, the lower end of the tubular member 1 is provided with a bottom wall, sand grains are filled in the tubular member 1, and a thermocouple insertion hole 1-1 is formed in the bottom wall of the tubular member;
a thermocouple 2 coupled with a telescopic device and capable of being movably inserted into or withdrawn from the thermocouple insertion hole 1-1.
The sand bath standard test piece comprises a base 3, wherein the base 3 is used for supporting and accommodating the tubular piece 1, a cavity 6 is formed in the outer wall of the tubular piece 1, and the cavity 6 is used as a container part of a heating pipe wall of a smoking set.
The sand bath standard test piece comprises: the sealing cover 4 is arranged at the upper end of the tubular piece 1, a heating element insertion hole 4-1 is arranged in the center of the sealing cover 4, and a central heating element of a heating smoking set to be detected is inserted into the heating element insertion hole 4-1.
The sealing cover 4 is connected with the tubular piece 1 in the following way: the sealing cover 4 is clamped with the inner wall of the tubular piece 1.
The sand bath standard test piece comprises: and a heat insulation device 5 positioned below the tubular member 1, wherein the heat insulation device 5 insulates the tubular member 1 from heat.
The grain diameter of the sand grain is 0.2-0.6 mm.
The height of the sand is 2/3-49/50 of the height of the cavity in the tubular member 1, so that the height of the sand slightly increases after the heating element is inserted. When the heating element is inserted, the sand height is slightly increased, and the space defined by the inner cavity of the tubular member 1 and the sealing cover 4 is filled.
The invention relates to a method for detecting heat transfer performance of a central heating smoking set, which uses the sand bath standard test piece for detection, and comprises the following steps:
step 1, inserting a central heating element of a central heating smoking set in the same batch into sand grains in a tubular piece 1 in a sand bath standard test piece through a heating element insertion hole 4-1 in an inverted downward direction, wherein the tubular piece 1 is accommodated in a heating pipe of the central heating smoking set, and a heating pipe wall of the central heating smoking set is positioned at the periphery of the tubular piece 1;
step 2, inserting the thermocouple 2 into a specific position in sand inside the tubular member 1 through the thermocouple insertion hole 1-1;
step 3, starting the central heating smoking set, collecting a temperature change curve through the thermocouple 2, closing the central heating smoking set, and withdrawing the thermocouple 2 from the thermocouple insertion hole 1-1;
step 4, heating the smoking set by adopting the same batch of different centers in each test, and repeating the steps 1-3 for a plurality of times to obtain a standard temperature curve range, wherein the standard temperature curve range is limited by an upper limit temperature change curve and a lower limit temperature change curve;
and 5, collecting temperature change curves of the central heating smoking sets to be detected in the same batch according to the steps 1-3, if the temperature change curves are within the standard temperature curve range of the step 4, the heat transfer performance of the central heating smoking sets meets the requirements, and if the temperature change curves are not within the standard temperature curve range of the step 4, the heat transfer performance of the central heating smoking sets does not meet the requirements.
In step 3, when the thermocouple 2 is withdrawn from the thermocouple insertion hole 1-1, the tip of the thermocouple 2 abuts against the outside of the thermocouple insertion hole 1-1 to prevent sand particles in the tubular member 1 from leaking out.
In step 3, before the central heating smoking set is started, the air inlet of the central heating smoking set is blocked to prevent heat loss.
The following are specific test experiments:
the first embodiment is as follows:
sand grains with a diameter of about 0.2mm are selected for filling the tubular member 1 to form a sand bath. The theoretical heating temperature of the smoking set is 278 ℃. The heating plate is inserted into the sand bath, the thermocouple 2 is inserted into sand grains 3mm away from the center of the heating plate, the insertion depth of the thermocouple 2 is 10mm, the smoking set is started to heat, the smoking set is heated by adopting the same batch of different centers in each test, the standard temperature change curve range of the temperature measured by the thermocouple 2 along with the change of heating time is obtained by measuring 10 times, and the following graph 1 is shown:
the temperature change curve of the smoking set sample 1 to be detected is acquired according to the steps 1-3, the temperature change curve of the sample 1 is shown in the figure 2, and the temperature change curve of the sample 1 is not in the range of the upper limit curve and the lower limit curve of the figure 1, so that the heat transfer performance of the smoking set sample 1 to be detected is proved to be unqualified.
And (3) collecting a temperature change curve of the smoking set sample machine 2 to be detected according to the steps 1-3, wherein the temperature change curve of the sample machine 2 is shown in the figure 3, and the temperature change curve of the sample machine 2 is in the range of the upper limit curve and the lower limit curve of the figure 1, so that the heat transfer performance of the smoking set sample machine 2 to be detected is proved to be qualified.
Fig. 4 is a cross-sectional view of a sand bath standard test piece with the thermocouple 2 inserted into the tubular member 1 in the first embodiment.
Fig. 5 is a cross-sectional view of the sand bath standard test piece with the thermocouple 2 extended into the tubular member 1 in the first embodiment, which is 90 degrees different from the cross-sectional angle of fig. 4.
Fig. 6 is a cross-sectional view of a central heating element inserted into a sand bath standard test piece at the time of heat transfer performance detection of a central heating smoking set.
Fig. 7 is a cross-sectional view of the central heating element inserted into the sand bath standard test piece at the time of heat transfer performance detection of the central heating smoking set, which is different from the cross-sectional angle of fig. 6 by 90 degrees.
The thermocouple 2 is inserted into the tubular member 1 through the insulating means 5.
Claims (10)
1. A sand bath standard test piece, characterized in that the sand bath standard test piece comprises:
the device comprises a tubular member (1), wherein the upper end of the tubular member (1) is provided with an opening, the lower end of the tubular member is provided with a bottom wall, sand grains are filled in the tubular member (1), and a thermocouple insertion hole (1-1) is formed in the side wall or the bottom wall of the tubular member;
a thermocouple (2) which can be movably inserted into or withdrawn from the thermocouple insertion hole (1-1).
2. A sand bath standard test piece according to claim 1, characterized in that it comprises a base (3), said base (3) being adapted to support and house said tubular member (1), the outer wall of said tubular member (1) being provided with a cavity (6), which cavity (6) acts as a smoking set heating tube wall receptacle.
3. A sand bath standard test part according to claim 1, characterized in that it comprises: and the sealing cover (4) is positioned at the upper end of the tubular piece (1), a heating element inserting hole (4-1) is formed in the center of the sealing cover (4), and a central heating element of a heating smoking set to be detected is inserted into the heating element inserting hole (4-1).
4. A sand bath standard test part according to claim 1, characterized in that it comprises: and a heat insulation device (5) positioned below the tubular member (1), wherein the heat insulation device (5) performs heat insulation and heat preservation on the tubular member (1).
5. A sand bath standard test piece according to claim 1, characterized in that the grain size of the sand grains is 0.2-0.6 mm, the height of the sand grains is 2/3-49/50 of the height of the cavity in the tubular member (1).
6. A sand bath standard test piece according to claim 3, characterized in that the volume not occupied by sand particles in the space defined by the inner cavity of the tubular piece (1) and the closing cap (4) is greater than or equal to the volume of the heating plate of the central heating smoking article to be tested.
7. A method for detecting heat transfer performance of a central heating smoking set, characterized in that the sand bath standard test piece according to any one of claims 1 to 6 is used for detection, the detection method comprising the steps of:
step 1, inserting a central heating element of a central heating smoking set in the same batch into sand grains in a tubular piece (1) in a sand bath standard test piece in an inverted downward manner, wherein the tubular piece (1) is accommodated in a heating pipe of the central heating smoking set, and the heating pipe wall of the central heating smoking set is positioned at the periphery of the tubular piece (1);
step 2, inserting the thermocouple (2) into a specific position in sand grains in the tubular member (1) through the thermocouple insertion hole (1-1);
step 3, starting the central heating smoking set, collecting a temperature change curve through the thermocouple (2), closing the central heating smoking set, and withdrawing the thermocouple (2) from the thermocouple insertion hole (1-1);
step 4, heating the smoking set by adopting the same batch of different centers, and repeating the steps 1-3 for a plurality of times to obtain a standard temperature curve range;
step 5, collecting temperature change curves of the central heating smoking sets to be detected in the same batch according to the steps 1-3;
if the temperature change curve is within the standard temperature curve range of the step 4, the heat transfer performance of the central heating smoking set meets the requirement; if the temperature change curve is not within the standard temperature curve range of the step 4, the heat transfer performance of the central heating smoking set is not satisfactory.
8. The method for detecting heat transfer performance of a central heating smoking set according to claim 7, wherein in step 3, when the thermocouple (2) is withdrawn from the thermocouple insertion hole (1-1), the tip of the thermocouple (2) abuts against the outside of the thermocouple insertion hole (1-1) to prevent sand particles in the tubular member (1) from leaking out.
9. The method of claim 7, wherein in step 3, the air inlet of the central heating smoking set is plugged to prevent heat loss before the central heating smoking set is activated.
10. The method of claim 7, wherein the central heating smoking set comprises a plurality of sensors,
when the result of step 5 is: when the heat transfer performance of the central heating smoking set meets the requirement, the following operations are carried out:
step 6, heating the smoking set by adopting the same batch of different centers, and repeating the steps 1-3 for a plurality of times to obtain the fluctuation range of the standard temperature curve as the standard range;
if the fluctuation range of the temperature change curve of the central heating smoking set to be detected in the same batch is within the standard range, the heat transfer performance of the central heating smoking set meets the requirement of the fluctuation range;
if the fluctuation range of the sand bath temperature change curve of the central heating smoking set to be detected in the same batch is not within the standard range, the heat transfer performance of the central heating smoking set does not meet the requirement of the fluctuation range.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211006574.0A CN117652703A (en) | 2022-08-22 | 2022-08-22 | Sand bath standard test piece and method for detecting heat transfer performance of central heating smoking set |
| PCT/CN2023/114180 WO2024041506A1 (en) | 2022-08-22 | 2023-08-22 | Sand bath standard test piece, and detection method for heat transfer performance of central heating cigarette utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211006574.0A CN117652703A (en) | 2022-08-22 | 2022-08-22 | Sand bath standard test piece and method for detecting heat transfer performance of central heating smoking set |
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| Publication Number | Publication Date |
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| CN117652703A true CN117652703A (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211006574.0A Pending CN117652703A (en) | 2022-08-22 | 2022-08-22 | Sand bath standard test piece and method for detecting heat transfer performance of central heating smoking set |
Country Status (2)
| Country | Link |
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| CN (1) | CN117652703A (en) |
| WO (1) | WO2024041506A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11092498B2 (en) * | 2017-10-02 | 2021-08-17 | R. J. Reynolds Tobacco Company | Thermal profiling system and method |
| CN112083029B (en) * | 2020-08-13 | 2022-11-25 | 四川士达特种炭材有限公司 | Filler comprehensive performance evaluation device and method |
| CN114568756A (en) * | 2020-11-30 | 2022-06-03 | 上海烟草集团有限责任公司 | Temperature measuring device, temperature measuring system and temperature measuring method |
| CN217986671U (en) * | 2022-08-22 | 2022-12-09 | 中国烟草总公司郑州烟草研究院 | Detection apparatus for circumference heating smoking set heat transfer performance |
-
2022
- 2022-08-22 CN CN202211006574.0A patent/CN117652703A/en active Pending
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- 2023-08-22 WO PCT/CN2023/114180 patent/WO2024041506A1/en unknown
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|---|---|
| WO2024041506A1 (en) | 2024-02-29 |
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