Air heat transfer rice cooker

Abstract

The utility model provides an air heat transfer electric rice cooker, comprising an electric rice cooker, wherein the electric rice cooker is provided with an outer shell, a heat preservation cover is provided inside the outer shell, an air guide cover is provided inside the heat preservation cover, an inner liner for loading food can be embedded and fixed in the air guide cover, a heating pipe is provided outside the air guide cover, and the heating pipe is arranged around the outer side of the air guide cover or below the air guide cover; a reflecting cover is provided at the bottom of the heat preservation cover, and an exhaust cover is provided at the bottom of the reflecting cover; a motor cover connected to the exhaust cover is provided at the bottom of the outer shell, a motor is provided in the motor cover, and the motor is connected with upper wind blades and lower wind blades respectively located in the reflecting cover and the exhaust cover; a first cavity for air flow is formed between the heat preservation cover and the side surface of the air guide cover, and a second cavity for air flow is formed between the inner liner and the air guide cover; the utility model heats the inner liner uniformly by circulating air after heating, so as to ensure that the rice is fully heated.

Description

Technical Field

[0001] The utility model relates to the technical field of electric rice cookers, more specifically to an air heat transfer electric rice cooker. Background Art

[0002] Traditional electric rice cookers usually use a single heating method during the heating process, such as setting a heating plate or heating tube at the bottom to heat the inner pot. This method has some problems. First, the single heating area leads to uneven heating, which may cause the food to be cooked unevenly or burnt; if multiple heating elements are set on the outside of the inner pot to achieve uniform heating of the inner pot, it will increase production costs and energy consumption. Secondly, due to the limitations of the heating method, the rice cooker may take a long time to fully cook the food, which will affect the user experience and increase energy consumption. In addition, traditional electric rice cookers may have poor heat dissipation when cooking, and the internal components that are affected by high temperatures for a long time are likely to have a shortened lifespan. Traditional electric rice cookers may also have inefficiencies in the cooling process after cooking, causing users to spend a long time waiting for the rice to cool down before eating, affecting the user experience. Utility Model Content

[0003] In view of this, the utility model provides an air heat transfer electric rice cooker.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An air heat transfer electric rice cooker comprises an electric rice cooker, wherein the electric rice cooker is provided with an outer shell, a heat preservation cover is provided inside the outer shell, an air guide cover is provided inside the heat preservation cover, an inner liner for loading food can be embedded and fixed in the air guide cover, a heating pipe is provided outside the air guide cover, and the heating pipe is arranged around the outer side of the air guide cover or below the air guide cover; a reflective cover is provided at the bottom of the heat preservation cover, and an exhaust cover is provided at the bottom of the reflective cover; a motor cover connected to the exhaust cover is provided at the bottom of the outer shell, a motor is provided in the motor cover, and the motor is connected to upper wind blades and lower wind blades respectively located in the reflective cover and the exhaust cover; a first cavity for air flow is formed between the side surfaces of the heat preservation cover and the air guide cover, and a second cavity for air flow is formed between the inner liner and the air guide cover; a plurality of first and second ventilation holes connected to the reflective cover are provided at the bottom of the heat preservation cover, and a plurality of third ventilation holes corresponding to the second ventilation holes are provided at the bottom of the air guide cover.

[0006] In a preferred technical solution, a plurality of air guide grooves are provided on the side of the air guide cover, and a notch connecting the first cavity and the second cavity is formed on the top of the air guide groove.

[0007] In the preferred technical solution, the side wall of the reflector has a slope structure that tilts outward from bottom to top, the first ventilation holes are distributed near the outside of the bottom surface of the insulation cover, and the second ventilation holes are distributed in the center of the bottom surface of the insulation cover.

[0008] In the preferred technical solution, a cover body covering the third ventilation hole is provided above the bottom surface of the air guide cover, the cover body is located in the second cavity, and a plurality of fourth ventilation holes communicating with the inside and outside are provided on the side of the cover body.

[0009] In a preferred technical solution, a temperature sensing probe that can contact the bottom of the inner container is fixedly provided on the air guide cover and the heat insulation cover, and the temperature sensing probe is wrapped with elastic silicone.

[0010] In the preferred technical solution, the side of the exhaust hood is provided with multiple through holes connected to the internal space of the shell, the bottom surface of the shell is located outside the motor cover and is provided with multiple exhaust holes connected to the inside and outside, and the bottom surface of the shell is located inside the motor cover and is provided with multiple air inlet holes connected to the inside and outside.

[0011] In a preferred technical solution, a plurality of supporting legs are provided on the bottom of the shell.

[0012] In a preferred technical solution, a top cover is provided on the top of the outer shell, and an upper temperature sensor extending toward the inner tank is provided on the bottom of the top cover.

[0013] It can be seen from the above technical solutions that, compared with the prior art, the present invention has the following beneficial technical effects:

[0014] The utility model realizes uniform heating of the inner pot by circulating the heated air through structural improvements. The circulating hot air and the heating tube heat the inner pot comprehensively at the same time, ensuring that the rice is fully heated, thereby improving the heating efficiency and the cooking effect. Compared with the structure with multiple heating elements, it is more energy-efficient. The motor drives the upper and lower wind blades to rotate, which plays the role of hot air circulation heating and realizes the cooling of the rest of the rice cooker at the same time, avoiding overheating of other components and shortening the service life of the rice cooker. The rapid heat dissipation after cooking can form an oil film between the inner pot and the rice, achieving a non-stick effect, and reducing the time the user has to wait for the rice to cool down before eating. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model Figure 1.

[0017] Figure 2 Schematic diagram of the decomposition structure of the utility model Figure 1 .

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model Figure 2 .

[0019] Figure 4 Schematic diagram of the decomposition structure of the utility model Figure 4 .

[0020] Figure numbers: 100, outer shell; 110, thermal insulation cover; 120, air guide cover; 130, inner tank; 140, heating tube; 150, reflective cover; 160, exhaust cover; 170, motor cover; 171, motor; 172, upper fan blade; 173, lower fan blade; 180, exhaust hole; 190, air inlet; 300, top cover; 310, upper temperature sensor; 122, air guide slot; 151, first ventilation hole; 152, second ventilation hole; 121, third ventilation hole; 123, cover body; 124, fourth ventilation hole; 125, temperature sensor; 161, through hole; 101, first cavity; 102, second cavity; 103, supporting foot. DETAILED DESCRIPTION

[0021] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0022] In the description of this application, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0024] An air heat transfer rice cooker, see Figure 1-4 , including an electric rice cooker, the electric rice cooker 100 is provided with a shell 100, a heat preservation cover 110 is provided in the shell 100, an air guide cover 120 is provided in the heat preservation cover 110, the top of the heat preservation cover 110 is fixed to the shell 110, the top of the air guide cover 120 is connected to the heat preservation cover 110, the heat preservation cover 110 and the air guide cover 120 form a double-layer structure, an inner liner 130 for loading food can be embedded and fixed in the air guide cover 120, the inner liner 130 is fixed to the air guide cover 120 through the outer edge of the top, the inner liner 130 can be freely taken out, and a heating pipe 140 is provided around the outside of the air guide cover 120. In other embodiments, the heating pipe 140 can be fixed to the outer side of the heat preservation cover 110. It is arranged below the wind guide cover 120; a reflective cover 150 is provided at the bottom of the heat preservation cover 110, and the reflective cover 150 is a basin-shaped structure, connected to the heat preservation cover 110 at the top, and an exhaust cover 160 is provided at the bottom of the reflective cover 150; a motor cover 170 is provided at the bottom of the outer shell 100 and is connected to the exhaust cover 160, and a motor 171 is fixed in the motor cover 170, and the rotating shaft of the motor 171 extends upward and is connected to the upper wind blades 172 and the lower wind blades 173. When the motor 171 is working, it drives the upper wind blades 172 and the lower wind blades 173 to rotate at the same time, the upper wind blades 172 are in the reflective cover 150, and the lower wind blades 173 are in the exhaust cover 160.

[0025] Furthermore, a first cavity 101 for air flow is formed between the sides of the heat preservation cover 110 and the air guide cover 120, and a second cavity 102 for air flow is formed between the liner 130 and the air guide cover 120; the bottom of the heat preservation cover 110 is provided with a plurality of first ventilation holes 151 and second ventilation holes 152 connected to the reflective cover 150, and the bottom of the air guide cover 120 is provided with a plurality of third ventilation holes 121 corresponding to the second ventilation holes 152; the first ventilation holes 151 allow the first cavity 101 and the reflective cover 150 to be connected. The air in the cover 150 can pass through each other, and the second ventilation hole 152 cooperates with the third ventilation hole 121 to allow the air in the second cavity 102 and the reflective cover 150 to circulate up and down; a plurality of air guide grooves 122 are provided on the side of the air guide cover 120, and the air guide grooves 122 are integrally formed on the air guide cover 120. The air guide grooves 122 are an arc surface structure, and a notch connecting the first cavity 101 and the second cavity 102 is formed on the top. The air in the first cavity 101 can enter the second cavity 102 through the air guide grooves 122.

[0026] Furthermore, the side wall of the reflective cover 150 has a slanted structure that tilts outward from bottom to top, the first ventilation hole 151 is distributed near the outside of the bottom surface of the thermal insulation cover 110, and the second through hole 152 is distributed in the center of the bottom surface of the thermal insulation cover 110; when the upper wind blade 172 rotates, the air in the reflective cover 150 is blown outward, and the air is guided upward when passing through the side wall of the reflective cover 150 with the slanted structure, thereby entering the first cavity 101 and continuing to blow upward. When the air reaches the top of the first cavity 101, it enters the second cavity 102 through the air guide groove 122. The air entering the second cavity 102 is blown downward by the guidance of the air guide groove 122 to reach the bottom of the inner liner 130. At this time, the air can return to the reflective cover 150 through the second ventilation hole 152 and the third ventilation hole 121.

[0027] Furthermore, a cover body 123 covering the third ventilation hole 121 is provided above the bottom surface of the air guide cover 120, and the cover body 123 is located in the second cavity 102. A plurality of fourth ventilation holes 124 communicating with the inside and outside are provided on the side of the cover body 123; the air guide cover 120 can support the air guide cover 120 and prevent the bottom of the liner 130 from closing the third ventilation hole 121. At the same time, the air guide cover 120 prevents the air blown downward from the side of the second cavity 102 from convection when it reaches the bottom, affecting the direction of airflow; when the air reaches the bottom of the second cavity 102, it enters the cover body 123 through the fourth ventilation holes 124 and is concentrated, and then enters the air guide cover 120 through the third ventilation holes 121 and the second ventilation holes 152; the air guide cover 12 0 and the insulation cover 100 are jointly fixed with a temperature probe 125 that can contact the bottom of the inner pot 130. The temperature probe 125 is wrapped with elastic silicone. The elastic silicone has a pot-shaped structure. The elastic silicone supports the temperature probe 125 to move up and down so that it can better fit the bottom of the inner pot 130, so as to accurately detect the temperature of the bottom of the inner pot 130; the top of the outer shell 100 is flipped and provided with a top cover 300. When the top cover 300 is closed, the inner pot 130 can be sealed; the bottom of the top cover 300 is provided with an upper temperature sensor 310 extending toward the inner pot 130. The upper temperature sensor 310 can detect the temperature in the inner pot 130. Multiple temperature-sensing components cooperate with the heating tube 140 and air flow to achieve multi-point temperature control, making the temperature control of the rice cooker more accurate and safer to use.

[0028] Furthermore, the side of the exhaust hood 160 is provided with a plurality of through holes 161 that are connected to the internal space of the shell 100, the bottom surface of the shell 100 is located on the outside of the motor cover 170 and is provided with a plurality of exhaust holes 180 that are connected to the inside and outside, and the bottom surface of the shell 100 is located on the inside of the motor cover 170 and is provided with a plurality of air inlet holes 190 that are connected to the inside and outside; the bottom of the shell 100 is provided with a plurality of supporting feet 103, which support the shell 100 so that the rice cooker as a whole can be stable. At the same time, the supporting feet 103 keep the bottom surface of the shell 100 away from the desktop, so that there is space at the bottom of the shell 100 for air flow. When the lower fan blades 173 rotate, the air in the exhaust hood 160 and the motor cover 170 can be discharged through the through holes 161, and the exhausted air is located in the shell 100 and can continue to be discharged outside the shell 100 through the exhaust holes 180, while the air outside the shell 100 can enter the motor cover 170 through the air inlet holes 190.

[0029] The specific working principle of this utility model is:

[0030] like Figure 4 As shown, Figure 4 The middle arrow indicates the direction of air flow. When the rice cooker is started to cook, the heating tube 140 and the motor 170 start working at the same time. The upper fan blade 172 rotates, and the air is blown outward. The air passes through the side wall of the reflector 150 and is blown upward. After the air enters the first cavity 101, it is heated by the heating tube 170. The flowing air can take away part of the heat of the heating tube 140. After the hot air reaches the first cavity 101, it enters the second cavity 102 through the air guide groove 122. The air entering the second cavity 102 is blown downward. At this time, the hot air and the heating tube 170 are simultaneously The inner pot 130 is heated; due to the rotation of the first fan blade 172, the air reaching the bottom of the second cavity 102 will be sucked downward, and the air passes through the fourth ventilation hole 124, the third ventilation hole 121, and the second ventilation hole 152 in sequence and then enters the reflective cover 150. The air circulates in this way, continuously heating the inner pot 130 as a whole, thereby achieving overall heating of the inner pot 130, making the cooked rice more thoroughly and more evenly cooked, improving the cooking effect, and making the rice taste better. The structure of the internal circulation of heated air can accelerate the heating speed of the inner pot 130, making the rice cooker more energy-saving and efficient.

[0031] The rice cooker can dissipate heat and cool down through the downwind blades 173. When the rice cooker is started to cook, the heating tube 140 and the motor 170 work at the same time. The downwind blades 173 on the motor 170 rotate, and the air in the exhaust cover 160 and the motor cover 170 is discharged into the space inside the shell 100 through the through holes 161. The air is then discharged to the outside of the shell 100 through the exhaust holes 180. Since the motor cover 170 separates the exhaust holes 180 and the air inlet holes 190, when the downwind blades 173 rotate, the cold air from the bottom of the shell 100 is sucked into the motor cover 170 through the air inlet holes 190. This cycle is repeated to achieve the heat dissipation and cooling function. When the rice is cooked, the heating tube 140 can be controlled to stop working, and the motor 170 continues to work. The air is circulated and blown to cool the inner pot 130. When the inner pot 130 is cooled quickly, an oil film is formed between the inner pot 130 and the rice, achieving a non-stick effect and reducing the time the user has to wait for the rice to cool down before eating.

[0032] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air heat transfer rice cooker, comprising a rice cooker, characterized in that: The electric rice cooker is provided with a shell (100), a heat preservation cover (110) is provided inside the shell (100), an air guide cover (120) is provided inside the heat preservation cover (110), an inner liner (130) for loading food can be embedded and fixed in the air guide cover (120), a heating pipe (140) is provided outside the air guide cover (120), and the heating pipe (140) is arranged around the outside of the air guide cover (120) or below the air guide cover (120); a reflection cover (150) is provided at the bottom of the heat preservation cover (110), and an exhaust cover (160) is provided at the bottom of the reflection cover (150); a motor cover (170) connected to the exhaust cover (160) is provided at the bottom of the shell (100), and a motor cover (170) is provided in the motor cover (170) A motor (171) is provided, and the motor (171) is connected to an upper wind blade (172) and a lower wind blade (173) respectively located in a reflective cover (150) and an exhaust cover (160); a first cavity (101) for air flow is formed between the sides of the heat preservation cover (110) and the wind guide cover (120), and a second cavity (102) for air flow is formed between the inner liner (130) and the wind guide cover (120); a plurality of first ventilation holes (151) and second ventilation holes (152) connected to the reflective cover (150) are provided at the bottom of the heat preservation cover (110), and a plurality of third ventilation holes (121) corresponding to the second ventilation holes (152) are provided at the bottom of the wind guide cover (120).

2. The air heat transfer rice cooker according to claim 1, characterized in that: A plurality of air guide grooves (122) are provided on the side of the air guide cover (120), and a notch connecting the first cavity (101) and the second cavity (102) is formed on the top of the air guide groove (122).

3. The air heat transfer rice cooker according to claim 1, characterized in that: The side wall of the reflective cover (150) has a slope structure that tilts outward from bottom to top, the first ventilation holes (151) are distributed on the bottom surface of the heat preservation cover (110) close to the outside, and the second ventilation holes (152) are distributed in the center of the bottom surface of the heat preservation cover (110).

4. The air heat transfer rice cooker according to claim 1, characterized in that: A cover body (123) covering the third ventilation hole (121) is provided above the bottom surface of the air guide cover (120); the cover body (123) is located in the second cavity (102); and a plurality of fourth ventilation holes (124) communicating with the inside and outside are provided on the side surface of the cover body (123).

5. The air heat transfer rice cooker according to claim 1, characterized in that: A temperature sensing probe (125) capable of contacting the bottom of the inner container (130) is fixedly disposed on the air guide cover (120) and the heat insulation cover (110), and the temperature sensing probe (125) is wrapped with elastic silica gel.

6. The air heat transfer rice cooker according to claim 1, characterized in that: The exhaust hood (160) is provided with a plurality of through holes (161) on the side thereof which are connected to the internal space of the outer shell (100); the bottom surface of the outer shell (100) is provided with a plurality of exhaust holes (180) which are connected to the inside and the outside at the outer side of the motor hood (170); and the bottom surface of the outer shell (100) is provided with a plurality of air inlet holes (190) which are connected to the inside and the outside at the inner side of the motor hood (170).

7. The air heat transfer rice cooker according to claim 1, characterized in that: A plurality of supporting legs (103) are provided at the bottom of the housing (100).

8. The air heat transfer rice cooker according to claim 1, characterized in that: A top cover (300) is provided on the top of the outer shell (100), and an upper temperature sensor (310) extending toward the inner container (130) is provided on the bottom of the top cover (300).

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