CN111473518A - Hot air heater shell and hot air heater - Google Patents
Hot air heater shell and hot air heater Download PDFInfo
- Publication number
- CN111473518A CN111473518A CN202010183046.7A CN202010183046A CN111473518A CN 111473518 A CN111473518 A CN 111473518A CN 202010183046 A CN202010183046 A CN 202010183046A CN 111473518 A CN111473518 A CN 111473518A
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- Prior art keywords
- hot air
- spacer
- cavity
- vent
- air heater
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/02—Casings; Cover lids; Ornamental panels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
- F24H9/2071—Arrangement or mounting of control or safety devices for air heaters using electrical energy supply
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Direct Air Heating By Heater Or Combustion Gas (AREA)
Abstract
The invention discloses a hot air heater shell and a hot air heater, which comprise a spacer bush, a shell body, a first end surface, a second end surface, an end cover and a heating core, wherein the end cover, the first end surface and the shell body form an air inlet cavity, the spacer bush, the first end surface and the second end surface divide the inner space of the shell body into a plurality of ventilation cavities which are communicated in sequence, air flows in sequence from outside to inside, the outer layer air absorbs heat dissipated from the inside of the heater for preheating, the contact time of the air and a heat source is prolonged, heat is absorbed fully, the heat loss is less, the heating efficiency is high, the low carbon is realized, the environment is protected, the temperature of the outer.
Description
Technical Field
The invention relates to the technical field of electric heating equipment, in particular to a hot air heater shell and a hot air heater.
Background
In the prior art, a high-temperature hot air heater of a liquid food filling machine is to install a heater core into a metal shell, and the metal shell comprises an air inlet, a hot air outlet, a heat insulation device and a sealing device. The heat insulation device has the function of minimizing the heat loss of the heater to the heating core and the hot air. The sealing device is used for preventing air from leaking from any place except the hot air outlet of the heater. The air blown into the air inlet enters the heating core in the heater for heating through the guide of the metal shell, and the heated hot air is blown out from the hot air outlet. In the air heating process, the heat insulation effect of the heat insulation device is limited, so that a large amount of heat in the heater is gathered on the heater shell and diffused to the outside of the heater, the heating efficiency is reduced, and the energy consumption is increased.
The high-temperature hot air heater of the existing liquid food filling machine has the following defects: firstly, the metal shell is high in temperature and even red, so that personnel can be easily scalded or surrounding inflammable materials can be easily ignited, and potential safety hazards exist; secondly, the heat loss is serious, the energy consumption is high, and the heating efficiency is low; thirdly, the heat is diffused to the surrounding parts or air, and the service life of other parts is influenced.
Disclosure of Invention
The invention aims to provide a hot air heater shell which can prevent heat diffusion, reduce heat loss and improve heating efficiency and a hot air heater using the shell, and can keep the low temperature of the shell and improve the safety of the heater.
In order to solve the above technical problem, the present invention provides a hot air heater case, including:
the spacer bush is of a hollow cylinder structure, and at least one vent hole is circumferentially arranged at one end, far away from the air inlet direction, of the spacer bush;
the outer shell is sleeved outside the spacer sleeve, the spacer sleeve divides the inner space of the outer shell into a plurality of sequentially communicated ventilation cavities, and one end of the outer shell is provided with an air inlet;
the first end face is connected to one end, provided with an air inlet, of the outer shell, covers an opening at one end of the ventilation cavity, the center of the first end face is hollow, and a plurality of first through holes communicated with the ventilation cavity on the outer side are formed in the first end face;
the second end face is connected to the other end of the shell, covers an opening at the other end of the ventilation cavity and is hollow in the center;
the end cover is arranged at the end part of the first end face, the center of the end cover is hollow, an air inlet cavity is formed among the end cover, the outer shell and the first end face, and the air inlet cavity is communicated with the air inlet and the first through hole.
As a preferred embodiment, an even number of spacers are provided.
As a preferred embodiment, the spacer sleeves are provided with two spacer sleeves, each spacer sleeve comprises an inner spacer sleeve and a spacer sleeve, an inner vent hole is arranged on each inner spacer sleeve, a middle vent hole is arranged on each spacer sleeve, a space surrounded by the inner spacer sleeves is an inner vent cavity, a space formed between each inner spacer sleeve and each spacer sleeve is a middle vent cavity, a space between each middle spacer sleeve and the outer shell is an outer vent cavity, the first through holes are communicated with the outer vent cavities, the middle vent holes are communicated with the outer vent cavities and the middle vent cavities, and the inner vent holes are communicated with the middle vent cavities and the inner vent cavities.
In a preferred embodiment, the air inlet is disposed on a side surface of the outer casing.
As a preferred embodiment, a baffle is clamped in the center of the first end face, a hollow part matched with the end cover is arranged in the center of the baffle, and a sealing gasket is arranged between the end cover and the baffle.
As a preferred embodiment, a flange edge extends from the end of the outer shell, the end cap is fastened to the end of the outer shell, the end cap is locked to the flange edge by a bolt, and a sealing ring is disposed between the outer shell and the flange edge.
In a preferred embodiment, the end cap is inserted into the end of the outer shell, and a sealing ring is arranged between the side surface of the end cap and the inner wall of the outer shell.
The invention also provides a hot air heater applying the hot air heater shell, wherein a heating core is arranged in the center of the spacer bush, the heating core is arranged in the center of the spacer bush along the air outlet direction, and the cable end of the heating core extends out of the heater shell.
In a preferred embodiment, a temperature sensor is disposed at the heating core.
In a preferred embodiment, a plurality of second through holes penetrating through the axial length of the heating core are arranged in the heating core along the circumferential direction, and the vent holes are communicated with the second through holes.
Compared with the prior art, the hot air heater shell and the hot air heater have the beneficial effects that:
1. the gas flows from outside to inside in sequence, the outer layer gas absorbs the heat dissipated from the inside of the heater for preheating, the heat loss is small, the heating efficiency is high, and the method is efficient, low-carbon and environment-friendly;
the high-temperature hot air heater and the shell of the high-speed filling machine creatively solve the defects of the high-temperature hot air heater of the existing filling machine on the premise of not increasing the manufacturing difficulty, manufacturing cost and use cost;
2. the temperature of the shell of the heater is ensured to be in a relatively low temperature range in the whole heating process, so that the shell of the heater is not hurt by people, potential safety hazards do not exist, and the safety is greatly improved;
3. a large amount of heat is not diffused to surrounding parts and air, the service life of the surrounding parts of the heater is not influenced, and the reliability of equipment applying the heater is improved;
4. the manufacturing difficulty, the manufacturing cost and the use cost are not increased;
5. the control element and the cable are both arranged at the cold air end, so that the influence of heat on the components and the cable is avoided, and the service life and the stability of the heater are improved.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 2 is a schematic diagram of an overall structure of the embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a second embodiment of the present invention;
FIG. 4 is a schematic diagram of the overall structure of a second embodiment of the present invention;
figure 5 is a schematic view of a heater core configuration of the present invention.
The reference numbers in the figures illustrate: 1. the air inlet comprises an air inlet body, 2, a heating core, 3, an air outlet body, 4, an inner partition sleeve, 5, an intermediate partition sleeve, 6, an outer shell body, 7, a second end face, 8, a first end face, 9, an end cover, 10, a sealing ring, 11, a baffle, 12, a sealing gasket, 13, an inner vent hole, 14, a middle vent hole, 15, an air inlet cavity, 16, an outer vent cavity, 17, a middle vent cavity, 18, an inner vent cavity, 19, a vent hole, 20, a first through hole, 21, a cable, 22, a temperature sensor, 23, a bolt, 24, a heater shell body, A, an air inlet direction, B and an air outlet direction.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1, a first embodiment of a hot air heater housing according to the present invention is shown, in which a hot air heater housing 24 according to the present invention includes a spacer, an outer housing 6, a first end surface 8, a second end surface 7, and an end cover 9, the first end surface 8, and the outer housing 6 form an air intake cavity 15, the spacer, the first end surface 8, and the second end surface 7 divide an inner space of the outer housing 6 into a plurality of sequentially communicated air ventilation cavities, and air sequentially traverses the air ventilation cavities from outside to inside, so as to increase a contact time between the air and a heat source, fully absorb heat, reduce heat loss, and lower an outer surface temperature of the outer housing, thereby improving safety of.
Specifically, referring to fig. 1 and 2, the spacer is a hollow cylinder structure, and at least one vent hole is circumferentially arranged at one end of the spacer, which is far away from the air inlet direction. Thus, gas can traverse one vent chamber and then pass through the vent hole into the next vent chamber. In the invention, in order to enable the air inlet 1 and the air outlet 3 to be positioned at two ends of the heater shell so as to facilitate the arrangement of the air inlet 1 and the air outlet 3, the number of the spacer bushes is even. Therefore, the even number of spacer bushes divides the outer shell 6 into odd number of ventilation cavities, and the air inlet 1 and the air outlet 3 can be positioned at two ends of the heater shell. Specifically, in this embodiment, the two spacer sleeves are provided, and include an inner spacer sleeve 4 and a spacer sleeve 5, an inner vent hole 13 is provided on the inner spacer sleeve 4, and a middle vent hole 14 is provided on the middle spacer sleeve 5. The outer shell 6 is sleeved outside the spacer sleeve, so that a ventilation cavity can be formed between the outer shell 6 and the spacer sleeve, in this embodiment, a space surrounded by the inner spacer sleeve 4 is an inner ventilation cavity 18, a space formed between the inner spacer sleeve 4 and the middle spacer sleeve 5 is a middle ventilation cavity 17, and a space between the middle spacer sleeve 5 and the outer shell 6 is an outer ventilation cavity 16. The middle vent hole 14 communicates the outer vent chamber 16 with the middle vent chamber 17, and the inner vent hole 13 communicates the middle vent chamber 17 with the inner vent chamber 18. 6 one end of shell body is provided with air inlet 1 for gaseous from the outside chamber of ventilating to the inboard chamber of ventilating removes, thereby the inboard chamber of ventilating in gaseous heat dissipation is ventilated by the gaseous absorption of the intracavity of ventilating of its outside one deck, makes calorific loss little, and heating efficiency is high, and gas temperature reduces from inside to outside in proper order simultaneously, guarantees that 6 temperatures of shell body are close to the room temperature, can not form the potential safety hazard.
In order to ensure that the gas passes through the ventilation cavities in sequence, the two ends of each ventilation cavity are respectively provided with a first end surface 8 and a second end surface 7, and the first end surfaces 8 cover the ventilation cavities into closed spaces only provided with the gas inlet 1 and the gas outlet 3. First terminal surface 8 connect in shell body 6 is provided with the one end of air inlet 1, first terminal surface 8 covers ventilate the opening of chamber one end, second terminal surface 7 connect in the shell other end, second terminal surface 7 covers ventilate the opening of the chamber other end, ventilate the both ends in chamber and be covered, guarantee to ventilate the sealed in chamber. And meanwhile, the centers of the first end surface 8 and the second end surface 7 are hollowed out, so that a space for inserting the heating core 2 is reserved on the first end surface 8 and the second end surface 7 while the ventilation cavity is sealed. In this embodiment, since the second end face 7 is located at the second end face 7 and disposed at the air outlet end, the center of the second end face 7 is hollowed out to form the air outlet 3. In order to ensure that the air inlet 1 is communicated with the ventilation cavity at the outermost side, a plurality of first through holes 20 communicated with the ventilation cavity at the outer side are further arranged on the first end surface 8. In this embodiment, the air introduced from the air inlet 1 enters the outer ventilation cavity 16 through the first through hole 20, traverses the outer ventilation cavity 16, enters the middle ventilation cavity 17 from the middle ventilation hole 14 at the end of the spacer 5, traverses the middle ventilation cavity 17 again, enters the inner ventilation cavity 18 through the inner ventilation hole 13 of the inner spacer 4, and finally flows out from the air outlet 3.
In order to facilitate the installation of the heater core 2 while allowing the air inlet 1 to communicate with all of the first through holes 20, the present embodiment is provided with an end cap 9. The end cover 9 is arranged at the end part of the first end face 8, and the center of the end cover 9 is hollow, so that air outlet or a cable 21 can conveniently penetrate out of the end cover. An air inlet cavity 15 is formed among the end cover 9, the outer shell 6 and the first end face 8, and the air inlet cavity 15 is communicated with the air inlet 1 and the first through hole 20. When the end cover 9 is opened, there is great space in the 6 tip of shell body, makes things convenient for heating core 2 to insert, nevertheless 1 and first through-hole 20 of air inlet communicate with the outside air this moment, and the lid closes end cover 9 after the installation of heating core 2 is accomplished, forms air inlet cavity 15, guarantees that the gas that air inlet 1 let in gets into the chamber of ventilating through first through-hole 20 completely. Meanwhile, in order to ensure that the air introduced into the air inlet 1 uniformly enters the ventilation cavity from each first through hole 20, the air inlet 1 is arranged on the side surface of the outer shell 6. At this moment, the air inlet direction is perpendicular to the direction of the first through holes 20, air is introduced from the air inlet 1 and then is coiled in the air inlet cavity 15, and then evenly enters the first through holes 20, if the air inlet 1 is arranged at the end part of the outer shell 6, the air firstly enters the first through holes 20 corresponding to the air inlet 1, and uniform heating is not facilitated.
Further, if the body diameter of heating core 2 is great, and the tip diameter is less, for the insertion of convenient heating core 2, the centre bore diameter of first terminal surface 8 is great, and the ventilation cavity can't be sealed completely this moment, consequently first terminal surface 8 center card is equipped with baffle 11, takes out baffle 11 when installation heating core 2, closes baffle 11 after the installation of heating core 2 is accomplished. The center of the baffle plate 11 is provided with a hollow part matched with the end cover 9, so that the air outlet or the cable 21 can conveniently pass through the hollow part. In order to ensure the seal between the baffle plate 11 and the first end surface 8, a sealing gasket 12 is arranged between the end cover 9 and the baffle plate 11. The gasket 12 is compressed between the end cap 9 and the baffle 11 to ensure that no air leaks at the baffle 11.
Further, in the first embodiment of the present invention, in order to ensure the connection stability between the end cap 9 and the outer shell 6, a flange edge extends from the end of the outer shell 6, the end cap 9 is fastened to the end of the outer shell 6, and the end cap 9 is fastened to the flange edge by a bolt 23. Meanwhile, in order to ensure the sealing between the end cover 9 and the outer shell 6, a sealing ring 10 is arranged between the outer shell 6 and the flange edge.
Referring to fig. 3 and 4, in the second embodiment of the present invention, the end cap 9 is inserted into the end of the outer shell 6, and in order to ensure the sealing between the end cap 9 and the outer shell 6, a sealing ring 10 is arranged between the side surface of the end cap 9 and the inner wall of the outer shell 6, which is simple and convenient to install. In other embodiments of the present invention, any structure that can be produced on the basis of the technical principle falls within the scope of protection of the technical principle.
Referring to fig. 1 and 5, the invention also discloses a hot air heater using the hot air heater shell, the center of the spacer sleeve is provided with a heating core 2, and the cable 21 and the body of the heating core 2 can be positioned at two ends of the sleeve because the sleeve is a hollow cylinder. The heating core 2 is arranged in the center of the spacer sleeve along the air outlet direction, and the cable 21 end of the heating core 2 extends out of the heater shell. The cable 21 of the heating core 2 is arranged at the cold air end far away from the air outlet 3, so that the element for controlling the heating core 2 can be arranged at the cold air end far away from the air outlet 3, the influence of heat on the element and the cable 21 is avoided, and the service life and the stability of the heater are improved. Heating core 2 department is provided with temperature sensor 22, and temperature sensor 22 can with heating core 2 fixed connection also can with shell fixed connection, and temperature sensor 22 direct detection heats the air temperature around the core, and the testing result is accurate. Further, in this embodiment, a temperature sensor 22 is disposed at an end of the heating core away from the cable, that is, the temperature sensor 22 is located at the position of the air outlet 3, and directly detects the temperature of the hot air blown out from the air outlet 3, so that the detection result is more accurate. In this embodiment, in order to further improve the gas heating efficiency, a plurality of second through holes 19 penetrating the axial length of the heating core 2 are circumferentially arranged in the heating core 2, and the second through holes 19 are communicated with the vent holes. In this embodiment, the heating core 2 is disposed in the inner ventilation cavity 18, and the air passes through the inner ventilation hole 13, enters the inner ventilation cavity 18, and then enters the different second ventilation holes 19, so that the air is divided, the contact area between the air and the heating core 2 is increased, and the heating efficiency of the air is improved.
Referring to fig. 1 and 3, in operation of the heater housing and the heater of the present invention, gas enters the gas inlet cavity 15 from the gas inlet 1 along the gas inlet direction a, and absorbs heat transferred from the surface of the gas inlet cavity 15, so as to keep the temperature around the gas inlet cavity 15 substantially stable, and slightly raise the temperature of the gas. The air enters the outer ventilation cavity 16 through the first through hole 20, and absorbs the heat transferred by the middle spacer 5, so that the surface temperature of the outer shell 6 is kept constant within a certain range, the air temperature is slightly increased, and the temperature of the outer surface of the outer shell 6 of the heater is not high because the temperature of the air is not high. The gas continues to flow in the direction of the arrow, sequentially enters the middle vent cavity 17 through the middle vent hole 14 and enters the inner vent cavity 18 through the inner vent hole 13, and absorbs heat in the middle vent cavity 17 and the inner vent cavity 18, so that the temperature of the gas is greatly increased. The gas with higher temperature continuously enters the second through hole 19 in the heating core 2 along the arrow direction for heating, and the heated gas is sprayed out from the gas outlet 3 to form high-temperature hot air. The temperature sensor 22 is positioned in the air outlet 3, detects the temperature of the hot air at the air outlet 3, and controls the heating power of the heating core 2 through the control element to ensure that the temperature of the hot air blown out from the air outlet 3 is kept in a set temperature range, thereby completing the whole working process of the hot air heater. In the whole hot air heating process, cold air always enters from the upper part of the heater shell and flows from outside to inside in sequence, heat dissipated from the inside of the heater is absorbed to preheat the air with lower temperature, and meanwhile, the temperature of the heater shell is ensured to be in a relatively lower temperature range in the whole heating process. The safety of the heater during working is guaranteed, and the energy consumption is reduced, so that the safety, the high efficiency, the low carbon and the environmental protection are simply and effectively realized.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. A hot air heater shell is characterized by comprising
The spacer bush is of a hollow cylinder structure, and at least one vent hole is circumferentially arranged at one end, far away from the air inlet direction, of the spacer bush;
the outer shell is sleeved outside the spacer sleeve, the spacer sleeve divides the inner space of the outer shell into a plurality of sequentially communicated ventilation cavities, and one end of the outer shell is provided with an air inlet;
the first end face is connected to one end, provided with an air inlet, of the outer shell, covers an opening at one end of the ventilation cavity, the center of the first end face is hollow, and a plurality of first through holes communicated with the ventilation cavity on the outer side are formed in the first end face;
the second end face is connected to the other end of the shell, covers an opening at the other end of the ventilation cavity and is hollow in the center;
the end cover is arranged at the end part of the first end face, the center of the end cover is hollow, an air inlet cavity is formed among the end cover, the outer shell and the first end face, and the air inlet cavity is communicated with the air inlet and the first through hole.
2. A hot air heater housing as claimed in claim 1, wherein an even number of spacers are provided.
3. The hot air heater shell according to claim 2, wherein the two spacers comprise an inner spacer and an inner spacer, the inner spacer is provided with an inner vent, the inner spacer is provided with a middle vent, a space enclosed by the inner spacer is an inner vent cavity, a space formed between the inner spacer and the inner spacer is a middle vent cavity, a space between the middle spacer and the outer shell is an outer vent cavity, the first through hole communicates with the outer vent cavity, the middle vent communicates with the outer vent cavity and the middle vent cavity, and the inner vent communicates with the middle vent cavity and the inner vent cavity.
4. A hot air heater housing as claimed in claim 1, wherein the air inlet is provided in a side of the outer housing.
5. The hot air heater shell according to claim 1, wherein a baffle is clamped in the center of the first end face, a hollow part matched with the end cover is arranged in the center of the baffle, and a sealing gasket is arranged between the end cover and the baffle.
6. The hot air heater housing as claimed in claim 1, wherein a flange extends from the end of the outer housing, the end cap is fastened to the flange by bolts, and a sealing ring is disposed between the outer housing and the flange.
7. A hot air heater housing as claimed in claim 1, wherein the end cap is inserted into the end of the outer housing, and a sealing ring is provided between the side of the end cap and the inner wall of the outer housing.
8. A hot air heater using the hot air heater case as claimed in claim 1, wherein the spacer is centrally provided with a heating core, the heating core is centrally provided in the spacer in the direction of air outlet, and a cable end of the heating core extends out of the heater case.
9. The hot air heater as claimed in claim 8, wherein a temperature sensor is provided at the heating core.
10. The hot air heater according to claim 8, wherein the heating core is circumferentially provided with a plurality of second through holes extending through an axial length of the heating core, and the vent holes are communicated with the second through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010183046.7A CN111473518A (en) | 2020-03-16 | 2020-03-16 | Hot air heater shell and hot air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010183046.7A CN111473518A (en) | 2020-03-16 | 2020-03-16 | Hot air heater shell and hot air heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111473518A true CN111473518A (en) | 2020-07-31 |
Family
ID=71747467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010183046.7A Pending CN111473518A (en) | 2020-03-16 | 2020-03-16 | Hot air heater shell and hot air heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111473518A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116293421A (en) * | 2023-02-17 | 2023-06-23 | 中国科学院合肥物质科学研究院 | Liquid nitrogen discharge pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060133782A1 (en) * | 2004-09-27 | 2006-06-22 | Roland Otto | Air stream heater |
| CN101344309A (en) * | 2007-07-10 | 2009-01-14 | 张连森 | Secondary air-intake pre-heating energy-saving air knife heater |
| CN104110838A (en) * | 2014-07-28 | 2014-10-22 | 沈阳工程学院 | Sleeve-type electric heating device for high-temperature and high-pressure gas |
-
2020
- 2020-03-16 CN CN202010183046.7A patent/CN111473518A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060133782A1 (en) * | 2004-09-27 | 2006-06-22 | Roland Otto | Air stream heater |
| CN101344309A (en) * | 2007-07-10 | 2009-01-14 | 张连森 | Secondary air-intake pre-heating energy-saving air knife heater |
| CN104110838A (en) * | 2014-07-28 | 2014-10-22 | 沈阳工程学院 | Sleeve-type electric heating device for high-temperature and high-pressure gas |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116293421A (en) * | 2023-02-17 | 2023-06-23 | 中国科学院合肥物质科学研究院 | Liquid nitrogen discharge pipe |
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Application publication date: 20200731 |
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| RJ01 | Rejection of invention patent application after publication |