CN205568637U - Electric pan - Google Patents

Abstract

The utility model discloses an electric heating pot, which belongs to the field of small kitchen appliances and solves the technical problem of low heating efficiency of the pot cover of the existing electric heating pot. The electric heating pot of the utility model includes a pot body, a pot cover and a control device. The pot The cover and the pot body form a cooking cavity, the pot cover includes an inner liner and an inner cover, and the pot cover also includes a PTC heater electrically connected to the control device, the PTC heater is installed on the inner liner and Radiative heat transfer to the inner cover. The embodiment of the utility model is applied to an electric heating cooker, such as an electric rice cooker, an electric pressure cooker, and the like.

Description

an electric hot pot

【Technical field】

The utility model relates to small kitchen appliances, in particular to an electric heating pot.

【Background technique】

Existing electric heating pots, such as electric rice cookers, electric pressure cookers or electric stewers, generally include a pot body and a pot cover, which form a cooking cavity, and the pot cover includes an inner cover and a lining. Heating, the electric heating pot generally adopts the heating method of combining bottom heating and top heating. The top heating method in the prior art is to lay electric heating wire on the inner lining. Since the working temperature of the electric heating wire is usually above 1000°C, the outer heating wire The heat-resistant fiber needs to be wrapped to prevent short circuit and overheating. In this way, the heat generated by the heating wire needs to pass through the heat-resistant fiber to radiate outward. The heat transfer efficiency is low, and it will cause some heat loss. In addition, the electric heating Wire heating also has problems such as easy oxidation and burning, and poor safety.

【Content of utility model】

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an electric heating pot, which can effectively improve the heating efficiency of the pot cover.

To solve the above technical problems, the utility model adopts the following technical solutions:

An electric heating pot, comprising a pot body, a pot cover and a control device, the pot cover and the pot body form a cooking cavity, the pot cover includes an inner lining and an inner cover, and the pot cover also includes a The PTC heater is installed on the inner lining and radiates heat to the inner cover.

In a further solution, the inner lining includes a lining cover and a metal heat conducting plate arranged on the bottom surface of the lining cover, and the PTC heater is installed on the metal heat conducting plate.

In a further solution, the metal heat conducting plate is partially recessed to form a cavity, and the PTC heater is fixed in the cavity.

In a further solution, the bottom surface of the PTC heater is in close contact with the bottom wall of the concave cavity.

In a further solution, the PTC heater includes a heating sheet and a heat conduction sheet, the area of the heat conduction sheet is larger than that of the heating sheet, and the heat conduction sheet is attached to the metal heat conduction plate.

In a further solution, a groove is provided on the bottom surface of the substrate corresponding to the position of the PTC heater, and there is a gap between the upper end surface of the PTC heater and the bottom surface of the groove.

In a further solution, the lining includes a lining cover and a metal heat conducting plate provided on the bottom surface of the lining cover, and the PTC heater is installed on the lining cover and is in contact with the metal heat conducting plate.

In a further solution, the metal heat conducting plate is an aluminum plate.

In a further solution, the PTC heater is installed near the edge of the lining.

In a further solution, the heating temperature of the PTC heater is 50°-300°.

The beneficial effects of the utility model:

1. The electric heating pan of the present utility model adopts a PTC heater to realize top heating. The PTC heater is electrically connected to the control device of the electric heating pan. The PTC heater is installed on the inner lining and radiates heat to the inner cover. Since the PTC heater works The temperature is low, and it can be directly mounted on the inner lining without overheating protection, so that the heat generated by the PTC heater can be directly conducted to the inner lining, and then radiated downwards from the inner lining to the inner cover, reducing overheating The thermal energy loss generated on the protective structure also improves the thermal efficiency; moreover, the PTC heater can also adjust the output of its own heating power according to the change of the ambient temperature, which has the characteristics of self-control temperature and does not need to set a special temperature protection device; PTC heater When the heater is working, there is no redness, no open flame, no burning, and it is safer to use.

In addition, since the PTC heater is installed on the inner lining and radiates heat to the inner cover, condensed water is not easy to adhere to the inner cover, reducing the generation of condensed water and making the inner cover easier to clean; because the working temperature of the PTC heater is lower than that of the existing electric heater The working temperature of the wire is much lower, which can also reduce the risk of users being burned when touching the inner cover.

2. The inner lining includes a lining cover and a metal heat conducting plate on the bottom surface of the lining cover. The PTC heater is installed on the metal heat conducting plate. The PTC heater can be installed closer to the metal heat conducting plate, which is conducive to heat transfer.

3. The metal heat conduction plate is partially concave to form a cavity, and the PTC heater is fixed in the cavity. The design of the cavity provides enough installation space for the PTC heater and reduces the height of the lining.

4. The PTC heater includes a heating sheet and a heat conduction sheet. The area of the heat conduction sheet is larger than that of the heating sheet. The heat conduction sheet is attached to the metal heat conduction plate. The heat conduction sheet can expand the heat transfer area and improve the heat transfer efficiency.

5. There is a groove on the bottom surface of the lining cover corresponding to the position of the PTC heater. There is a gap between the upper end surface of the PTC heater and the bottom surface of the groove. Interference occurs, which is conducive to the smooth installation of the metal heat conduction plate on the liner.

6. The metal heat conduction plate is an aluminum plate, and the heat conduction plate made of aluminum has the characteristics of light weight and low cost.

7. The PTC heater is installed close to the edge of the inner lining. On the one hand, there is no need to make major modifications to the existing production molds, which reduces manufacturing costs; on the other hand, the PTC heater will not be interfered by other structures on the pot cover. and impact.

8. The heating temperature of the PTC heater is 50°~300°. The PTC heater is used for auxiliary heating of the food, so there is no need to set an excessively high working temperature. In this temperature range, the PTC heater can have a good effect on the food. Heating effect, and greatly save electricity.

These features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and accompanying drawings.

【Description of drawings】

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is a schematic diagram of the explosion structure of the electric heating pot inner cover and lining in the preferred embodiment of the utility model;

Fig. 2 is the schematic structural view of the metal heat conducting plate of the electric heating pot in the preferred embodiment of the present invention;

Fig. 3 is a schematic diagram of the assembly structure of the PTC heater and the lining in the preferred embodiment of the present invention.

【detailed description】

The technical solutions of the embodiments of the present invention will be explained and described below in conjunction with the accompanying drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all of them. Based on the examples in the implementation manners, other examples obtained by those skilled in the art without making creative efforts all belong to the protection scope of the present utility model.

The electric heating pot proposed in the preferred embodiment of the present utility model includes a pot body and a pot cover. The pot cover is connected to the pot body. A pot liner is arranged in the pot body. The pot cover closes the mouth of the pot liner to form a cooking cavity. The pot cover includes an inner cover And loam cake, loam cake comprises face cover and liner. The electric heating cooker of this embodiment can be an electric rice cooker or an electric pressure cooker. The specific structure and working principle of the electric heating cooker are well known in the art. The embodiment of the utility model will not describe it in detail in conjunction with the accompanying drawings, and refer to the existing conventional A rice cooker or electric pressure cooker will do.

With reference to Fig. 1, in order to realize the three-dimensional heating of electric heating pot, the utility model embodiment adds PTC heater 4 on the pot cover of electric heating pot, and this PTC heater 4 is electrically connected with the control device of electric heating pot, and PTC heater 4 is installed on On the inner lining and radiate heat to the inner cover 3, the advantage of this design is that the PTC heater 4 has a lower operating temperature and can be directly mounted on the inner lining without overheating protection, so that the PTC heater 4 will generate heat when it is working. The heat can be directly conducted to the inner lining, and then radiated downwards from the inner lining to the inner cover 3, reducing the thermal energy loss on the overheating protection structure and improving thermal efficiency; moreover, the PTC heater 4 can also The output of self-heating power is adjusted by changing the temperature, which has the characteristics of self-control temperature, and no special temperature protection device is required; the PTC heater 4 does not glow red, has no open flame, does not burn during operation, and is safer to use. In addition, the self-control temperature feature of the PTC heater 4 can also optimize and control the power consumption to a minimum. At the same time, the high heating efficiency of the thermosensitive ceramic can also greatly improve the utilization efficiency of power, saving more power and energy; finally, due to the PTC heating The device 4 does not produce radiation when heated, which is more environmentally friendly.

Referring to Figures 1 and 2, during the specific implementation of this preferred embodiment, the above-mentioned lining includes a lining cover 1 and a metal heat conducting plate 2, and the metal heat conducting plate 2 can be a stainless steel plate, copper plate or aluminum plate, etc., in order to reduce the weight of the pot cover and lower the pot For the cost of the cover, the metal heat conducting plate 2 in this embodiment is preferably an aluminum plate. The PTC heater 4 is installed on the metal heat conducting plate 2, and is connected with the control device by the wire 5, the PTC heater 4 comprises a heating sheet 41 and a heat conducting sheet 42, and the heating sheet 42 is connected on the upper surface of the heat conducting sheet 42, and the heating sheet 41 The heating element generally adopts heat-sensitive ceramics, preferably Taibai ceramics, and its heat sink is made of heat-conducting materials such as copper, aluminum or stainless steel. The temperature is 1000 °, so the PTC heater 4 can be directly mounted on the inner lining without overheating protection. Specifically, the heat conduction sheet 42 is directly connected to the metal heat conduction plate 2, and the heat conduction sheet 42 absorbs the heat generated by the heating sheet 41. It is transmitted into the cooking cavity through the metal heat conducting plate 2 and the inner cover 3. At this time, the condensed water is not easy to adhere to the inner cover 3, which reduces the generation of condensed water and makes the inner cover 3 easy to clean. Compared with the prior art, due to the PTC heating The working temperature of the device 4 is much lower than that of the existing heating wire, so the risk of the user being burned when touching the inner cover 3 can also be reduced.

Since the PTC heater is used for auxiliary heating of the food, there is no need to set an excessively high working temperature. The working temperature of the PTC heater in this embodiment is 50° to 300°. Within this temperature range, the PTC heater can heat the food. Play a good heating effect, and greatly save electricity.

In order to expand the range of heat transfer of the PTC heater 4, the area of the heat conducting sheet 42 in the utility model is greater than the area of the heating sheet 41. At this time, the heat generated by the heating sheet 41 is transferred to the heat conducting sheet 42, and the heat conducting sheet 42 expands the area of the heat. Diffusion area, so that the heat can quickly fill the cooking cavity, heat the food, and help improve the taste of the food.

Referring to FIG. 3 , the metal heat conducting plate 2 is partially recessed to form a cavity 21 , and the PTC heater 4 is fixedly installed in the cavity 21 and is in close contact with the bottom wall of the cavity 21 , that is, the heat conducting sheet 42 and the cavity 21 The bottom wall directly contacts the connection. The advantage of this design is that it can provide enough installation space for the PTC heater 4 and reduces the axial height of the lining.

A groove 11 is provided on the lining cover 1 corresponding to the installation position of the PTC heater 4. The groove 11 and the concave cavity 21 form a housing cavity, and the PTC heater 4 is located in the housing cavity. There is also a gap 12 between the upper end faces of the device 4, so that when the lining cover 1 and the metal heat conducting plate 2 are assembled, the PTC heater 4 can be avoided from interfering with the installation of the lining cover 1, which is beneficial to the metal heat conducting plate 2 is smoothly installed on the liner cover 1.

In other embodiments of the present invention, in order to simplify the processing of the metal heat conducting plate and the lining cover, there is no need to set a concave cavity on the metal heat conducting plate, and there is no need to set a groove on the lining cover, and the PTC heater is directly installed on the metal heat conducting plate , can also achieve the effect similar to that of the preferred embodiment, and those skilled in the art can easily understand the technical solution of the preferred embodiment of the utility model, so it will not be described in detail.

The cavity 21 in this preferred embodiment is arranged at the position close to the edge of the metal heat conducting plate 2. At this time, the PTC heater 4 is located at the position close to the edge of the lining. The middle part of the lining is also provided with a steam valve and a temperature control device 6, so the middle part of the metal heat conducting plate 2 must be provided with a steam inlet 22 communicated with the steam valve, so that if the PTC heater 4 is installed in the middle position, not only will the Affect the discharge of water vapor, and will also be affected by the humidity of water vapor, which will make the PTC heater 4 invalid and shorten the service life; on the other hand, if the PTC heater 4 is installed in the middle position, the steam valve, temperature control device 6 And steam inlet hole 22 must change original position, will carry out large-scale transformation to the mold of liner cover 1 and metal heat conducting plate 2 at this moment, increased manufacturing cost. To sum up, in this preferred embodiment, the PTC heater 4 is installed near the edge of the lining.

In other embodiments of the present invention, the PTC heater can also be installed on the lining cover 1 and be in contact with the metal heat conducting plate 2, so that the design can also achieve the effect similar to that of the preferred embodiment.

The above is only a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, those skilled in the art should understand that the utility model includes but is not limited to the accompanying drawings and the above specific implementation described in the content. Any modifications that do not deviate from the functional and structural principles of the present utility model shall be included in the scope of the claims.

Claims (10)

1. an electric food warmer, including pot, pot cover and control device, described pot cover forms cooking cavity with pot, Described pot cover includes liner and inner cap, it is characterised in that described pot cover also includes being electrically connected with described control device The ptc heater connect, described ptc heater is arranged on described interior lining and to inner cap radiant heat transfer.

2. electric food warmer as claimed in claim 1, it is characterised in that described liner includes lining lid and is located at institute Stating the metal heat-conducting plate of lining lid bottom surface, described ptc heater is arranged on described metal heat-conducting plate.

3. electric food warmer as claimed in claim 2, it is characterised in that the described partially recessed shape of metal heat-conducting plate Becoming cavity, described ptc heater is fixed in described cavity.

4. electric food warmer as claimed in claim 3, it is characterised in that described ptc heater bottom surface and cavity Diapire is in close contact.

5. electric food warmer as claimed in claim 2, it is characterised in that described ptc heater includes heating plate And conducting strip, the area of described conducting strip is more than the area of described heating plate, and described conducting strip abuts in metal On heat-conducting plate.

6. electric food warmer as claimed in claim 2, it is characterised in that the corresponding described PTC in described lining lid bottom surface Heater locations is provided with groove, has gap between described ptc heater upper surface and described groove floor.

7. electric food warmer as claimed in claim 1, it is characterised in that described liner includes lining lid and is located at institute State lining lid bottom surface metal heat-conducting plate, described ptc heater be arranged on described lining cover and with described metal Heat-conducting plate contacts.

8. the electric food warmer stated such as one of claim 2 to 7, it is characterised in that described metal heat-conducting plate is aluminum Plate.

9. the electric food warmer stated such as one of claim 1 to 7, it is characterised in that described ptc heater is installed In the position near described liner edge.

10. the electric food warmer stated such as one of claim 1 to 7, it is characterised in that described ptc heater Heating-up temperature is 50 °～300 °.