CN111743413A - One-way heat conduction and insulation device for electric rice cooker cover - Google Patents
One-way heat conduction and insulation device for electric rice cooker cover Download PDFInfo
- Publication number
- CN111743413A CN111743413A CN202010520431.6A CN202010520431A CN111743413A CN 111743413 A CN111743413 A CN 111743413A CN 202010520431 A CN202010520431 A CN 202010520431A CN 111743413 A CN111743413 A CN 111743413A
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- heat
- heat conduction
- phase change
- rib
- steam
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/06—Lids or covers for cooking-vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/36—Shields or jackets for cooking utensils minimising the radiation of heat, fastened or movably mounted
Abstract
The invention provides a unidirectional heat conduction and preservation device of an electric rice cooker cover, which comprises an energy storage component and a heat conduction component which are fixedly arranged in the cooker cover, wherein the energy storage component comprises a phase change heat absorption layer, a cavity is formed in the middle of the phase change heat absorption layer, the cavity is a steam liquefied gas chamber, one end of the steam liquefied gas chamber is communicated with an inner container of the electric rice cooker through a steam conveying pipeline, and the other end of the steam liquefied gas chamber is communicated with a water storage tank through a condensed water conveying pipeline. The heat conducting component comprises a plurality of heat conducting fins and a movable flat plate which are arranged at intervals along the horizontal direction, and a plurality of ribbed plates which are matched with the heat conducting fins for heat conducting are arranged on the movable flat plate. The phase change material is isolated from the inner container by the single heat conducting device, so that the utilization rate of steam is improved, the consumption of electric energy is reduced, the living cost is reduced, meanwhile, condensed water is prevented from directly falling on rice, and the taste of the rice is improved.
Description
Technical Field
The invention relates to the field of household appliances, in particular to a unidirectional heat conduction and insulation device for an electric rice cooker cover.
Background
The IH electric cooker is a frequently-used small household appliance, a large amount of steam overflows in the cooking process, the overflow of the steam can increase the humidity of a room, the influence on the use of other appliances to a certain degree is caused, people feel uncomfortable, and in addition, because the steam contains huge heat, a user can also be scalded. And because the steam contains huge heat, the direct discharge into the air can cause the waste of energy resources. In addition, the common IH electric rice cooker generally directly heats the inner container for heat preservation, so that water vapor is easily condensed on the upper cover to form water drops, and the water drops fall into the pot to reduce the taste of the rice.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a one-way heat conduction and insulation device of an electric rice cooker cover so as to solve the problems that steam is wasted due to the fact that steam is directly discharged out of the conventional electric rice cooker and the taste of rice in a cooker is influenced by the fact that steam condensate falls into the cooker.
In order to achieve the technical purpose, the technical scheme of the invention provides a unidirectional heat conduction and insulation device of an electric rice cooker cover, which comprises an energy storage component and a heat conduction component, wherein the energy storage component and the heat conduction component are fixedly arranged in the cooker cover; a cavity is formed in the middle of the phase change heat absorption layer, and the cavity is a vapor liquefaction air chamber; one end of the steam liquefaction air chamber is communicated with an inner container of the electric cooker through a steam conveying pipeline, and the other end of the steam liquefaction air chamber is communicated with the water storage tank through a condensed water conveying pipeline; the upper surface of the steam liquefaction chamber is also provided with an exhaust hole penetrating through the phase change heat absorption layer;
the heat conducting component comprises a frame made of heat conducting materials, the phase change heat absorbing layer is arranged on the upper surface of the frame, a plurality of first heat conducting fins are arranged at intervals on the top of the inner wall of the frame, a plurality of second heat conducting fins which are in one-to-one correspondence with the first heat conducting fins are arranged at intervals on the bottom of the inner wall of the frame, a moving flat plate is further arranged in the middle of the frame, one end of the moving flat plate is connected with a driving component used for driving the moving flat plate to move up and down, and a plurality of rib plates which are respectively matched with the first heat conducting fins and the second heat conducting fins in one-to-one correspondence for conducting heat are arranged on the upper surface and;
when the heat preservation device is in a heat conduction state, the ribbed plate on the upper surface of the movable flat plate is in contact with the first heat conduction rib, and the ribbed plate on the lower surface of the movable flat plate is in contact with the second heat conduction rib; when the heat preservation device is in an energy storage state, the ribbed plate on the upper surface of the movable flat plate is separated from the first heat conduction rib or the ribbed plate on the lower surface is separated from the second heat conduction rib.
Further, the steam conveying pipeline is inclined upwards, and the condensed water conveying pipeline is inclined downwards.
Further, the phase change heat absorption layer is made of paraffin phase change materials.
Furthermore, the first heat-conducting rib, the second heat-conducting rib and the rib plate located on the movable flat plate are all arranged in an inclined mode, and the inclined angles of the first heat-conducting rib, the second heat-conducting rib and the rib plate are the same.
Further, first heat conduction fin, second heat conduction fin and the rib board on the removal flat board is equidistant interval setting, two adjacent the distance of rib board family and two adjacent distance between the first heat conduction fin and two adjacent distance between the second heat conduction fin are equal, just a rib board on the removal flat board upper surface is located two adjacent between the first heat conduction fin, a rib board on the removal flat board lower surface is located two adjacent between the second heat conduction fin.
Further, the driving part comprises a driving motor and a screw rod connected with an output shaft of the driving motor, a sliding sleeve is sleeved on the screw rod and is in spiral connection with the screw rod, and one side of the sliding sleeve is fixedly connected with the movable flat plate.
Furthermore, the electric cooker also comprises a first temperature sensor for detecting the temperature in the inner container of the electric cooker, a second temperature sensor for detecting the temperature of the phase change layer and a controller, wherein the first temperature sensor, the second temperature sensor and the driving motor are electrically connected with the controller.
Further, the controller is a 51 single chip microcomputer.
Further, it is characterized in that the frame, the first rib, the second rib, and the rib plate are all made of copper.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a unidirectional heat conduction heat preservation device of an electric rice cooker cover, which comprises an energy storage component and a heat conduction component, wherein when rice in an inner container of the electric rice cooker is in the early stage of cooking, the inner container contains more water and generates more steam, the steam enters a steam liquefaction chamber through a steam conveying pipeline, and the contained heat is absorbed by a phase change material for storage. Along with the reduction of inner bag inner water content, when treating the inner bag and need keep warm, the heat is passed through heat-conducting component from the pot cover top and is transmitted the inner bag, keeps warm to the rice in the inner bag, and the single is kept apart to heat-conducting device between phase change material and the inner bag, has improved the utilization ratio of vapour, has reduced the consumption of electric energy, has reduced the cost of life, has avoided the comdenstion water directly to descend on rice simultaneously, has improved the taste of rice.
Drawings
FIG. 1 is a schematic structural view of a unidirectional heat-conducting thermal insulation device of an electric rice cooker cover according to the present invention;
description of reference numerals:
1-electric cooker cover, 2-phase change heat absorption layer, 3-vapor liquid phase condensation chamber, 4-exhaust hole, 5-vapor conveying pipeline, 6-condensed water conveying pipeline, 7-water storage tank, 8-frame, 9-first heat conduction fin, 10-second heat conduction fin, 11-moving flat plate, 12-fin, 13-driving motor, 14-lead screw, 15-sliding sleeve and 16-guide rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the present embodiment provides a unidirectional heat-conducting thermal insulation device for an electric rice cooker lid, which comprises an energy storage member and a heat-conducting member installed in the electric rice cooker lid 1. The energy storage member is positioned above the heat conductive member. The energy storage component comprises a phase change heat absorption layer 2 and a water storage tank 7 positioned on one side of the phase change heat absorption layer 2. The phase change heat absorption layer 2 is integrally made of paraffin phase change materials, and has good functions of absorbing heat and storing heat. The water storage tank 7 can be an independent component fixed in the pot cover, or a water storage tank can be arranged on the pot cover body.
A cavity is formed in the middle of the phase change heat absorption layer 2, the cavity is a steam liquefied gas chamber 3, one end of the steam liquefied gas chamber 3 is communicated with an inner container of the electric cooker through a steam conveying pipeline 5, and the other end of the steam liquefied gas chamber is communicated with the water storage tank through a condensed water conveying pipeline 6. The steam generated in the rice cooking process of the electric rice cooker inner container is conveyed into the steam liquefying chamber 3 through the steam conveying pipeline 5, most of the heat of the steam is absorbed and stored by the phase change material, and the generated condensed water is discharged into the drainage water storage tank 7 through the condensed water conveying pipeline 6. In order to avoid vapor from flowing back into the inner container, the vapor delivery pipe 5 is preferably inclined upward. Meanwhile, in order to avoid the backflow of the condensed water into the vapor liquefaction chamber 3, the condensed water pipe 6 is preferably inclined downward.
In order to avoid the overlarge pressure in the vapor liquefaction gas chamber 3, the upper surface of the vapor liquefaction chamber 3 is also provided with an exhaust hole 4 penetrating through the phase change heat absorption layer 2. In order to reduce the waste of steam, the vent holes 4 are small holes with smaller structural sizes.
The heat conductive member includes a frame 8 made of a heat conductive material, and the phase change heat absorbing layer 3 is fixed on an upper surface of the frame 1. The top of the inner wall of the frame 8 is provided with a plurality of first heat conducting fins 9 at equal intervals along the horizontal direction, and the bottom of the inner wall of the frame 8 is provided with a plurality of second heat conducting fins 10 which are opposite to the first heat conducting fins 9 and correspond to one another at equal intervals along the horizontal direction. In order to improve the heat conduction efficiency, the first heat conduction rib 9 and the second heat conduction rib 10 are both arranged obliquely at the same angle. The distance between two adjacent first heat-conducting ribs 9 and two adjacent second heat-conducting ribs 10 is the same.
A moving flat plate 11 is arranged between the first heat conducting fin 9 and the second heat conducting fin 10, and one end of the moving flat plate 11 is connected with a driving part for driving the moving flat plate 11 to move up and down. The upper and lower surfaces of the movable flat plate 11 are provided with a plurality of rib plates 12 which are respectively matched with the first heat-conducting ribs 9 and the second heat-conducting ribs 10 for heat conduction. Each first heat-conducting fin 9 corresponds to a rib 12 located on the upper surface of the moving plate 11, and each second heat-conducting fin 10 corresponds to a rib 12 located on the lower surface of the moving plate 11. The rib 12 has the same inclination angle as the first heat transfer element 9 and the second heat transfer element 10. The rib plates 12 are arranged at equal intervals along the moving flat plate 11, and the distance between two adjacent rib plates 12 is equal to the distance between two adjacent first heat-conducting ribs 9 and the distance between two adjacent second heat-conducting ribs 10.
Preferably, the first heat conducting rib 9, the second heat conducting rib 10, the rib 12 and the frame 8 are made of copper with good heat conducting performance, and the heat conducting coefficient of copper is high, specifically 398W/m.k, so that the components are made of copper, and the heat conducting efficiency can be improved.
When the heat preservation device is in a heat conduction state, the rib plate 12 on the upper surface of the moving flat plate 11 is in contact with the first heat conduction rib 9, and the rib plate 12 on the lower surface is in contact with the second heat conduction rib 10; when the heat preservation device is in the energy storage state, the rib plate on the upper surface of the movable flat plate 11 is separated from the first heat conduction rib 9 or the rib plate on the lower surface is separated from the second heat conduction rib 10.
In order to improve the heat conduction efficiency, it is preferable that one rib 12 on the upper surface of the moving plate 11 is located between two adjacent first heat-conducting ribs, and one rib on the lower surface of the moving plate 11 is located between two adjacent second heat-conducting ribs 10. When in a heat conduction state, one side of the rib plate positioned on the upper surface of the moving flat plate 11 is in contact with the side surface of the corresponding first heat conduction rib 9; one side of the rib plate on the lower surface of the movable flat plate 11 is in contact with the side surface of the corresponding second heat conducting rib 10 in a fitting manner, so that the fitting area is increased, and the heat conducting efficiency is improved.
The driving part comprises a driving motor 13 and a screw rod 14 connected with an output shaft of the driving motor 13, a sliding sleeve 15 is sleeved on the screw rod 14, the sliding sleeve 15 is in threaded connection with the screw rod 14, and one side of the sliding sleeve 15 is fixedly connected with the movable flat plate 11. The screw rod 14 is driven to rotate by the motor 13, so that the sleeve 15 sleeved on the screw rod 14 is driven to move up and down, the movable flat plate 11 is further driven to move up and down, the rib plate 12 and the first heat conducting rib 9 and the second heat conducting rib 10 are in contact with each other and disconnected, and the conduction and heat transfer of the heat conducting device or the switching of energy storage states of the broken blocks are realized.
The heat preservation device further comprises a first temperature sensor (not shown in the figure) for detecting the temperature in the inner container of the electric cooker, a second temperature sensor (not shown in the figure) for detecting the temperature of the phase change heat absorption layer 2 and a controller (not shown in the figure), wherein the first temperature sensor, the second temperature sensor and the driving motor 13 are electrically connected with the controller. The models of the first temperature sensor and the second sensor are both DHT22, and the controller adopts a 51-chip microcomputer.
The working principle of the unidirectional heat conduction and insulation device of the electric rice cooker cover is as follows: when the electric rice cooker is in the early stage of cooking, the temperature of the inner container is higher than that of the phase-change heat-absorbing layer 2 on the top layer of the cooker cover, the one-way heat-conducting device does not conduct heat at the moment, the water in the electric rice cooker is more, more steam is generated, the steam enters the steam liquefying chamber 3 through the steam conveying pipe 5, and the heat of the steam is absorbed and stored by the phase-change heat-absorbing layer 2; immediately after cooking, the temperatures of the upper layer and the lower layer of the one-way heat conducting device are still high, although the temperature of the phase change layer reaches 80 ℃, because the temperature in the liner is high, excessive heat preservation measures are not needed, and the one-way heat conducting device does not trigger heat conduction; when the first temperature sensor detects that the temperature of the phase change heat absorption layer 2 reaches 80 ℃, and the second temperature sensor detects that the temperature of the inner container of the electric rice cooker is lower than 80 ℃, the controller controls the driving motor to start and drives the moving flat plate 11 to move upwards or downwards, so that the ribbed plate 12 on the upper surface of the moving flat plate 11 is in contact with the first heat conduction fin 9 above, the ribbed plate on the lower surface is in contact with the second heat conduction fin 10, and heat is transferred downwards to the ribbed plate 12 and the second heat conduction fin 10 through the first heat conduction fin 9 and enters the inner container to preserve heat of rice. Meanwhile, the condensed water generated in the vapor-liquid phase chamber flows back to the water storage tank 7, so that the condensed water is effectively prevented from directly falling on the rice, and the taste of the rice is prevented from being influenced.
The unidirectional heat conduction heat preservation device of the electric rice cooker cover can store steam heat in the cooking process and use the steam heat for later heat preservation, improves the utilization rate of steam, saves energy, reduces the consumption of electric energy, reduces cost, and simultaneously can prevent condensed water generated by steam from directly falling on rice to influence the taste of the rice.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. The unidirectional heat conduction and insulation device of the electric rice cooker cover is characterized by comprising an energy storage component and a heat conduction component which are fixedly arranged in the cooker cover, wherein the energy storage component is positioned above the heat conduction component and comprises a phase change heat absorption layer and a water storage tank positioned on one side of the phase change heat absorption layer; a cavity is formed in the middle of the phase change heat absorption layer, and the cavity is a vapor liquefaction air chamber; one end of the steam liquefaction air chamber is communicated with an inner container of the electric cooker through a steam conveying pipeline, and the other end of the steam liquefaction air chamber is communicated with the water storage tank through a condensed water conveying pipeline; the upper surface of the steam liquefaction chamber is also provided with an exhaust hole penetrating through the phase change heat absorption layer;
the heat conducting component comprises a frame made of heat conducting materials, the phase change heat absorbing layer is arranged on the upper surface of the frame, a plurality of first heat conducting fins are arranged at intervals on the top of the inner wall of the frame, a plurality of second heat conducting fins which are in one-to-one correspondence with the first heat conducting fins are arranged at intervals on the bottom of the inner wall of the frame, a moving flat plate is further arranged in the middle of the frame, one end of the moving flat plate is connected with a driving component used for driving the moving flat plate to move up and down, and a plurality of rib plates which are respectively matched with the first heat conducting fins and the second heat conducting fins in one-to-one correspondence for conducting heat are arranged on the upper surface and;
when the heat preservation device is in a heat conduction state, the ribbed plate on the upper surface of the movable flat plate is in contact with the first heat conduction rib, and the ribbed plate on the lower surface of the movable flat plate is in contact with the second heat conduction rib; when the heat preservation device is in an energy storage state, the ribbed plate on the upper surface of the movable flat plate is separated from the first heat conduction rib or the ribbed plate on the lower surface is separated from the second heat conduction rib.
2. A thermally insulating unit according to claim 1, wherein said vapor delivery conduit is upwardly inclined and said condensate delivery conduit is downwardly inclined.
3. A unidirectional heat conduction and insulation device as claimed in claim 1, wherein the phase change heat absorption layer is made of paraffin phase change material.
4. A thermally insulating unit as claimed in claim 1, wherein the first and second heat conducting ribs and the ribs on the movable plate are inclined, and the first and second heat conducting ribs and the ribs are inclined at the same angle.
5. A unidirectional heat conduction and insulation device as claimed in claim 4, wherein the first heat conduction fins, the second heat conduction fins and the ribs on the movable plate are arranged at equal intervals, the distance between two adjacent ribs is equal to the distance between two adjacent first heat conduction fins and the distance between two adjacent second heat conduction fins, one rib on the upper surface of the movable plate is located between two adjacent first heat conduction fins, and one rib on the lower surface of the movable plate is located between two adjacent second heat conduction fins.
6. The unidirectional heat conduction and insulation device according to claim 1, wherein the driving component comprises a driving motor and a screw rod connected with an output shaft of the driving motor, a sliding sleeve is sleeved on the screw rod, the sliding sleeve is spirally connected with the screw rod, and one side of the sliding sleeve is fixedly connected with the movable flat plate.
7. The unidirectional heat conduction and insulation device of claim 6, further comprising a first temperature sensor for detecting the temperature in the inner container of the electric cooker, a second temperature sensor for detecting the temperature of the phase change layer, and a controller, wherein the first temperature sensor, the second temperature sensor and the driving motor are electrically connected with the controller.
8. A unidirectional heat conduction and insulation device as claimed in claim 7, wherein the controller is a 51-chip microcomputer.
9. A thermally unidirectional thermal insulation apparatus according to any one of claims 1 to 8, wherein said frame, first thermal conduction ribs, second thermal conduction ribs and said ribs are all made of copper.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010520431.6A CN111743413B (en) | 2020-06-09 | 2020-06-09 | One-way heat conduction and insulation device for electric rice cooker cover |
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| CN202010520431.6A CN111743413B (en) | 2020-06-09 | 2020-06-09 | One-way heat conduction and insulation device for electric rice cooker cover |
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| CN111743413A true CN111743413A (en) | 2020-10-09 |
| CN111743413B CN111743413B (en) | 2021-09-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112674612A (en) * | 2020-12-24 | 2021-04-20 | 珠海格力电器股份有限公司 | Rice cooker cover and electric cooker |
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