Cover plate assembly and electric cooker

Abstract

The utility model discloses a cover plate assembly and an electric cooker. The cover plate assembly comprises an upper cover and a lower cover, the inner cover is mounted on the inner side of the bottom of the upper cover; the heat preservation plate is installed in the upper cover and located above the inner cover; the light wave heating device is arranged in the upper cover, and the light wave heating device is located above the heat preservation plate and is close to the heat preservation plate. The light wave heating device is arranged above the heat preservation plate, so that the heat preservation plate can be uniformly heated through the light wave heating device, then heat is transmitted to the inner cover through heat radiation, the temperature of each part of the inner cover can be kept at about 100 DEG C, and local cold ends of the inner cover are avoided. Thus, when the electric rice cooker is used, no condensate water is generated when steam in the cooking cavity flows upwards to the inner cover, and therefore the cleanliness of the cooking environment and safe use of the electric rice cooker are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to cooking equipment technical field especially, it relates to a cover plate subassembly and electric rice cooker. BACKGROUND

[0002] Electric rice cooker is a common kitchen appliance, which converts electrical energy into heat energy to steam, cook, stew, boil, and bake food, which is convenient, safe and reliable. The electric rice cooker generally includes a cover plate assembly, a pot body, and an inner pot. The inner pot is arranged in the pot body, and the cover plate assembly is installed on the pot body. The cover plate assembly is covered with the pot body to form a cooking cavity between them.

[0003] When the electric rice cooker is cooking, the heating device at the bottom of the pot body heats the food in the cooking cavity and transfers heat to the cover plate assembly. The inner cover of the cover plate assembly corresponds to the cooking cavity. In the heating state, the overall temperature of the inner cover can reach 100℃. However, due to the arrangement of the heat dissipation structure of the cover plate assembly, the temperature of the inner cover will drop, causing the temperature of the local position of the inner cover to be lower than 100℃ and forming a cold end. In this case, the steam in the cooking cavity will liquefy into condensed water when it encounters the cold end of the inner cover, which will fall into the cooking cavity and affect the taste of the food or even cause the food to deteriorate. Moreover, when the cover plate assembly is opened, the condensed water will flow to any position inside the electric rice cooker and the countertop outside the electric rice cooker, which not only needs to be cleaned, but also has the risk of damaging the electric rice cooker.

[0004] The prior art sets a heat preservation plate in the cover plate assembly to maintain the temperature of the inner cover, but the heat preservation effect of the heat preservation plate is limited and cannot effectively solve the problem of condensed water. SUMMARY

[0005] In order to overcome at least one of the above-mentioned defects of the prior art, the purpose of the utility model is to provide a cover plate assembly and an electric rice cooker, which uses a light wave heating device to heat the heat preservation plate and transfers heat to the inner cover by heat radiation, thereby maintaining the uniformity of the high temperature of the inner cover to solve the problem of condensed water.

[0006] The technical solution adopted by the utility model to solve the problem is:

[0007] A cover plate assembly, comprising:

[0008] an upper cover;

[0009] an inner cover installed on the inner side of the bottom of the upper cover;

[0010] a heat preservation plate installed in the upper cover above the inner cover;

[0011] a light wave heating device arranged in the upper cover above the heat preservation plate and close to the heat preservation plate.

[0012] Further, the heat preservation plate is provided with a light transmission part corresponding to the light wave heating device.

[0013] Further, the light transmission parts are uniformly distributed on the heat preservation plate, and the light transmission parts are detachably connected with the heat preservation plate.

[0014] Further, the light wave heating device comprises a light wave heating pipe, and the light wave heating pipe is arranged corresponding to the light transmission part.

[0015] Further, the light wave heating device further comprises a reflecting cover, and the reflecting cover is arranged above the light wave heating pipe.

[0016] Further, the heat preservation plate and the top inner wall of the upper cover and the inner cover are all arranged at intervals to form a heating cavity and a heated cavity respectively, a centrifugal fan is arranged in the heating cavity corresponding to the central region of the heat preservation plate, the central region of the heat preservation plate and the circumferential side are provided with air circulation channels, air circulation in the heating cavity and the heated cavity is realized by driving of the centrifugal fan, and the light wave heating device is arranged in the heating cavity and located at the circumferential side of the centrifugal fan.

[0017] Further, the central region of the heat preservation plate is uniformly and intervally provided with a plurality of air suction ports penetrating through, the circumferential side of the heat preservation plate is uniformly and intervally provided with a plurality of air exhaust ports penetrating through, and the plurality of air suction ports and the plurality of air exhaust ports form the air circulation channels.

[0018] Further, the upper cover comprises an outer cover and a supporting cover, and the supporting cover, the heat preservation plate and the inner cover are sequentially and intervally arranged in the outer cover from top to bottom to form the heating cavity between the supporting cover and the heat preservation plate.

[0019] The supporting cover and the top inner wall of the outer cover are arranged at intervals to form a containing cavity, a motor is arranged in the containing cavity, and the motor is installed on the supporting cover and connected with the centrifugal fan.

[0020] Further, the inner cover is detachably connected with the upper cover, and the heat preservation plate is provided with a perspective area corresponding to the centrifugal fan.

[0021] The utility model also provides a kind of electric rice cooker, comprising: boiler body, inner pot and cover plate assembly, inner pot is arranged in boiler body, cover plate assembly is hinged with boiler body, cover plate assembly can be covered on boiler body, to form cooking cavity between cover plate assembly and inner pot.

[0022] The cover plate assembly and the electric rice cooker provided by the utility model have the following beneficial effects:

[0023] The utility model discloses a light wave heating device is arranged on the top of the heat preservation board, can utilize the light wave heating device to the even heating of heat preservation board, then through the heat radiation and transfer the heat to the inner cover, can keep the temperature of each part of the inner cover at about 100 DEG C, avoid the local cold end of the inner cover. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the exploded view of the cover plate assembly of example 1;

[0025] Figure 2 It is the sectional view of the cover plate assembly of example 1;

[0026] Figure 3 It is the sectional view of the cover plate assembly of example 1 and removes the outer cover;

[0027] Figure 4 It is the structure schematic drawing of the electric rice cooker of example 2 and opens state.

[0028] Among them, the meaning of the sign is as follows:

[0029] 1, upper cover;11, outer cover;12, support cover;121, through hole;2, inner cover;3, heat preservation board;31, light transmission part;32, air inlet;33, air outlet;34, perspective area;4, light wave heating device;41, light wave heating pipe;42, reflector;5, heating cavity;6, heated cavity;7, centrifugal fan;8, motor;9, containing cavity;100, cooker body;200, inner pot;300, cover plate assembly. DETAILED DESCRIPTION

[0030] In order to better understand and implement, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment.

[0031] In the description of the utility model, it is explained that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not indicative or suggestive of the device or element indicated must have a particular orientation, a particular orientation and operation, therefore it can not be understood as the limitation of the utility model.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0033] Embodiment 1

[0034] With reference to Figure 1 and Figure 2 , the embodiment provides a cover plate assembly, which comprises an upper cover 1, an inner cover 2, a heat preservation plate 3 and a light wave heating device 4. The upper cover 1 is a semi-enclosed structure with an opening downward, the inner cover 2 is installed on the inner side of the bottom of the upper cover 1, and the peripheral side of the inner cover 2 is fixedly connected with the inner wall of the upper cover 1. The heat preservation plate 3 is installed in the upper cover 1 and above the inner cover 2, and the peripheral side of the heat preservation plate 3 is fixedly connected with the inner wall of the upper cover 1. The heat preservation plate 3 is used for heat preservation of the inner cover 2, so as to prevent the temperature of the inner cover 2 from being locally or integrally reduced to obviously below 100℃ due to the heat dissipation structure.

[0035] The cover plate assembly is generally used in kitchen appliances such as electric rice cookers. In the use state of the kitchen appliances such as the electric rice cookers, the steam in the cooking cavity flows upward, and the inner cover 2 is arranged opposite to the cooking cavity. The upward flowing steam meets the inner cover 2. Once the temperature of the inner cover 2 is locally or integrally reduced to obviously below 100℃ due to the heat dissipation structure to form a cold end, the steam meets cold on the surface of the inner cover 2 to form condensed water. On the one hand, the condensed water will drip into the cooking cavity, affecting the taste of food and even causing the food to deteriorate. On the other hand, when the cover plate assembly opens the cooking cavity, the condensed water will gather into a water flow and flow to any part of the kitchen appliance such as the electric rice cooker and the countertop. Not only does this increase the difficulty of cleaning, but also once the condensed water enters the interior of the kitchen appliance such as the electric rice cooker, it is easy to cause short circuit and damage the kitchen appliance such as the electric rice cooker.

[0036] Although the heat preservation plate 3 has a heat preservation effect, the effect is very small, and the inner cover 2 still forms a cold end, and the problem of condensed water cannot be completely solved.

[0037] Therefore, the cover plate assembly of the embodiment is provided with the light wave heating device 4. The light wave heating device 4 is arranged in the upper cover 1, and the light wave heating device 4 is arranged above the heat preservation plate 3 and close to the heat preservation plate 3. The light wave heating device 4 uses the generated light wave to radiate the heat preservation plate 3 to heat the heat preservation plate 3, and then the heat preservation plate 3 heats the inner cover 2 through heat radiation, so as to keep the temperature of each part of the inner cover 2 at about 100℃, avoiding the local cold end of the inner cover 2. In this way, in the use state of the kitchen appliance such as the electric rice cooker, when the steam in the cooking cavity flows upward to the inner cover 2, no condensed water is generated, thereby ensuring the cleanliness of the cooking environment and the safe use of the electric rice cooker.

[0038] The light wave heating device 4 can be directly mounted on the heat preservation plate 3, or there can be a gap between the light wave heating device 4 and the heat preservation plate 3, and the heat preservation plate 3 is provided with a light transmission part 31 corresponding to the light wave heating device 4. The light transmission part 31 is provided to allow the light wave generated by the light wave heating device 4 to pass through. In this way, the inner cover 2 is heated in two ways: first, the light wave heating device 4 radiates the heat preservation plate 3 with the generated light wave to heat the heat preservation plate 3, and then the heat preservation plate 3 heats the inner cover 2 through heat radiation; second, the light wave generated by the light wave heating device 4 radiates the inner cover 2 through the light transmission part 31. In this way, the inner cover 2 is heated by two heating methods at the same time, which can better maintain the temperature of the inner cover 2 at 100℃, and ensure that the temperature of each part of the inner cover 2 is uniform.

[0039] The light transmission part 31 is uniformly distributed on the heat preservation plate 3, and the light transmission part 31 is detachably connected with the heat preservation plate 3. In order to ensure the heating effect of the light wave heating device 4, the light wave heating device 4 is uniformly distributed above the heat preservation plate 3, and the light transmission part 31 is uniformly distributed on the heat preservation plate 3 corresponding to the light wave heating device 4.

[0040] On this basis, the light transmission part 31 is detachably connected with the heat preservation plate 3, so that the heat preservation plate 3 includes a heat preservation plate body and the light transmission part 31, the heat preservation plate body can be preferably made of a material with good heat preservation property, and the light transmission part 31 can be preferably made of a material with good light transmission effect. In this way, the heat preservation plate 3 can achieve the effects of heat preservation and light transmission, and any damage to the heat preservation plate body and the light transmission part 31 can be replaced separately, saving costs.

[0041] Specifically, the light wave heating device 4 includes a light wave heating tube 41, and the light wave heating tube 41 is arranged corresponding to the light transmission part 31. The light wave heating tube 41 is a halogen heating tube or a quartz heating tube, which has a ring structure to be uniformly distributed. The light wave generated by the light wave heating tube 41 can be uniformly diffused to the surrounding environment, thereby uniformly heating the heat preservation plate 3 and the inner cover 2.

[0042] The light wave heating device 4 further includes a reflecting cover 42, and the reflecting cover 42 is arranged above the light wave heating tube 41. The reflecting cover 42 can reflect the light wave diffused by the light wave heating tube 41 away from the heat preservation plate 3, thereby improving the strength of the light wave radiating the heat preservation plate 3 and the inner cover 2, and further improving the heating efficiency.

[0043] On the basis of the above structure, referring to Figures 1-3 The heat preservation plate 3 and the top inner wall of the upper cover 1 and the inner cover 2 are spaced apart to form a heating cavity 5 and a heated cavity 6 respectively, the heating cavity 5 is provided with a centrifugal fan 7 corresponding to the center region of the heat preservation plate 3, and the center region of the heat preservation plate 3 and the circumferential side are provided with air flow channels to realize the circulation of air in the heating cavity 5 and the heated cavity 6 by the driving of the centrifugal fan 7, and the light wave heating device 4 is arranged in the heating cavity 5 and located at the circumferential side of the centrifugal fan 7.

[0044] The arrangement of the heating cavity 5, the heated cavity 6 and the centrifugal fan 7 enables the centrifugal fan 7 to suck the air in the heated cavity 6 into the heating cavity 5 when the centrifugal fan 7 rotates, and then diffuse the air to the periphery through the centrifugal structure and return to the heated cavity 6. In this way, the inner cover 2 is heated in three ways: first, the light wave heating device 4 heats the heat preservation plate 3 by radiating the light wave to the heat preservation plate 3, and then the heat preservation plate 3 heats the inner cover 2 by thermal radiation. Second, the light wave generated by the light wave heating device 4 radiates the inner cover 2 through the light transmission part 31. Third, the light wave generated by the light wave heating device 4 heats the air in the heating cavity 5 and part of the heated cavity 6, and then uses the centrifugal fan 7 to realize the circulation of the air in the heating cavity 5 and the heated cavity 6 to uniformly heat the air in the heating cavity 5 and the heated cavity 6, and heat exchanges between the air in the heated cavity 6 and the inner cover 2 to heat the inner cover 2. In this way, the three heating methods simultaneously heat the inner cover 2, which can better maintain the temperature of the inner cover 2 at 100℃, ensure the uniform temperature of each part of the inner cover 2, and improve the heating efficiency.

[0045] It is worth noting that the light wave heating tube 41 and the reflecting cover 42 are located in the heating cavity 5 and surround the centrifugal fan 7, and the centrifugal fan 7 is arranged at a distance from the heat preservation plate 3, so as to ensure the smooth rotation of the centrifugal fan 7 and avoid the damage of the fan blades of the centrifugal fan 7 to the light wave heating tube 41, the reflecting cover 42 and the heat preservation plate 3.

[0046] For the air flow channel, the central region of the heat preservation plate 3 is uniformly and evenly spaced with a plurality of air suction ports 32, and the periphery of the heat preservation plate 3 is uniformly and evenly spaced with a plurality of air exhaust ports 33, and the plurality of air suction ports 32 and the plurality of air exhaust ports 33 form the air flow channel. The air suction port 32 is used to uniformly and quickly suck the air in the heated cavity 6 into the heating cavity 5 when the centrifugal fan 7 rotates, and the air exhaust port 33 is used to uniformly and quickly return the air diffused to the periphery through the centrifugal structure into the heated cavity 6, so as to realize the strong convection of the air in the heating cavity 5 and the heated cavity 6 through the air suction port 32 and the air exhaust port 33.

[0047] The rotation of the centrifugal fan 7 is driven by the motor 8. The upper cover 1 includes an outer cover 11 and a support cover 12, and the support cover 12, the heat preservation plate 3 and the inner cover 2 are sequentially and spaced arranged in the outer cover 11 from top to bottom to form the heating cavity 5 between the support cover 12 and the heat preservation plate 3. The support cover 12 is spaced from the inner wall of the top of the outer cover 11 to form the accommodating cavity 9, and the motor 8 is arranged in the accommodating cavity 9 and installed on the support cover 12 and connected with the centrifugal fan 7.

[0048] The support cover 12 is used to support and install the motor 8, and the through hole 121 is formed in the support cover 12 to pass through the output shaft of the motor 8 to rotate, so that the output shaft of the motor 8 is connected with the centrifugal fan 7. In this way, the fan structure composed of the motor 8 and the centrifugal fan 7 can be stably installed through the support cover 12.

[0049] In the embodiment, the support cover 12, the heat preservation plate 3 and the inner cover 2 are detachably connected with the outer cover 11 through buckles or other structures, so as to facilitate the separate replacement and cleaning of the parts. The heat preservation plate 3 is provided with a perspective area 34 corresponding to the centrifugal fan 7. The perspective area 34 can be provided on the light transmission part 31 or be a part of the light transmission part 31. After the inner cover 2 is removed, the rotation of the centrifugal fan 7 can be observed through the perspective area 34, so as to realize the visualization of the centrifugal fan 7, so as to timely find and solve the problems of the centrifugal fan 7, thereby ensuring the smooth circulation of the heat convection between the heating cavity 5 and the heated cavity 6.

[0050] Embodiment 2

[0051] Referring to Figure 4 The embodiment provides an electric rice cooker, which comprises a cooker body 100, an inner pot 200 and a cover plate assembly 300 according to any one of the embodiments 1-3. The inner pot 200 is arranged in the cooker body 100, and the cover plate assembly 300 is hingedly connected with the cooker body 100. The cover plate assembly 300 can be covered on the cooker body 100 to form a cooking cavity between the cover plate assembly 300 and the inner pot 200.

[0052] The outer cover 11 of the cover plate assembly 300 is rotatably connected with the cooker body 100 through a hinged structure, so that the cover plate assembly 300 can be covered on the cooker body 100 or the cooking cavity can be opened.

[0053] The cover plate assembly 300 of the embodiment 1 is assembled in the electric rice cooker. In the use state of the electric rice cooker, the inner cover 2 can be heated in three ways: first, the light wave heating device 4 heats the heat preservation plate 3 through the light wave radiation generated by the light wave heating device 4, and then the heat preservation plate 3 heats the inner cover 2 through the heat radiation. Second, the light wave generated by the light wave heating device 4 radiates the inner cover 2 through the light transmission part 31. Third, the light wave generated by the light wave heating device 4 heats the air in the heating cavity 5 and part of the heated cavity 6, and then the air in the heating cavity 5 and the heated cavity 6 is circulated and heat-conducted by the centrifugal fan 7, so that the air in the heating cavity 5 and the heated cavity 6 is uniformly heated, and the heat exchange between the air in the heated cavity 6 and the inner cover 2 realizes the heating of the inner cover 2. The three heating methods simultaneously heat the inner cover 2, which can better maintain the temperature of the inner cover 2 at 100℃, ensure the uniform temperature of each part of the inner cover 2, and improve the heating efficiency. In this way, the cold end of the inner cover 2 can be avoided, and the steam in the cooking cavity will not produce condensed water when flowing upward to the inner cover 2, thereby ensuring the cleanliness of the cooking environment and the safe use of the electric rice cooker.

[0054] The technical means disclosed by the utility model scheme are not limited to the technical means disclosed by the above-mentioned embodiments, and also include technical schemes composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the art, without departing from the principles of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered within the protection scope of the utility model.

Claims

1. A cover plate assembly, characterized by It includes: upper cover (1); inner cover (2), the inner cover (2) is installed in the bottom of the upper cover (1) inside; Insulation board (3), the insulation board (3) is installed in the upper cover (1) and is located above the inner cover (2); Light wave heating device (4), the light wave heating device (4) is provided in the upper cover (1), and the light wave heating device (4) is located above the insulation board (3) and is arranged close to the insulation board (3).

2. The cover plate assembly of claim 1, wherein: The insulation board (3) is provided with a light-transmitting part (31) corresponding to the light wave heating device (4).

3. The cover plate assembly of claim 2, wherein: The light-transmitting part (31) is uniformly distributed on the insulation board (3), and the light-transmitting part (31) is detachably connected with the insulation board (3).

4. The cover plate assembly of claim 2, wherein: The light wave heating device (4) includes a light wave heating tube (41), and the light wave heating tube (41) is arranged corresponding to the light-transmitting part (31).

5. The cover plate assembly of claim 4, wherein: The light wave heating device (4) further includes a reflecting cover (42), and the reflecting cover (42) covers the light wave heating tube (41).

6. The cover plate assembly of any one of claims 1-5, wherein: The insulation board (3) and the top inner wall of the upper cover (1) and the inner cover (2) are spaced apart to form a heating cavity (5) and a heated cavity (6) respectively, a centrifugal fan (7) is arranged in the center area of the insulation board (3) in the heating cavity (5), and air passages are arranged in the center area and the circumferential side of the insulation board (3) to realize the circulation of air in the heating cavity (5) and the heated cavity (6) by the driving of the centrifugal fan (7), and the light wave heating device (4) is arranged in the heating cavity (5) and located on the circumferential side of the centrifugal fan (7).

7. The cover plate assembly of claim 6, wherein: A plurality of air suction ports (32) are uniformly and spacedly arranged in the center area of the insulation board (3), a plurality of air exhaust ports (33) are uniformly and spacedly arranged in the circumferential side of the insulation board (3), and the plurality of air suction ports (32) and the plurality of air exhaust ports (33) form the air passage.

8. The cover plate assembly of claim 6, wherein: The upper cover (1) includes an outer cover (11) and a supporting cover (12), the supporting cover (12), the insulation board (3) and the inner cover (2) are sequentially and spacedly arranged in the outer cover (11) from top to bottom to form the heating cavity (5) between the supporting cover (12) and the insulation board (3); The supporting cover (12) and the top inner wall of the outer cover (11) are spaced apart to form a containing cavity (9), and a motor (8) is arranged in the containing cavity (9), the motor (8) is mounted on the supporting cover (12) and connected with the centrifugal fan (7).

9. The cover plate assembly of claim 6, wherein: The inner cover (2) is detachably connected with the upper cover (1), and the insulation board (3) is provided with a perspective area (34) corresponding to the centrifugal fan (7).

10. An electric rice cooker, characterized by comprising: It includes: A cooker body (100), an inner pot (200) and the cover plate assembly (300) according to any one of claims 1-9, the inner pot (200) is arranged in the cooker body (100), the cover plate assembly (300) is hinged to the cooker body (100), and the cover plate assembly (300) can be covered on the cooker body (100) to form a cooking cavity between the cover plate assembly (300) and the inner pot (200).

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