CN216822882U

CN216822882U - Steam cooking utensil convenient to water level detects

Info

Publication number: CN216822882U
Application number: CN202123139117.2U
Authority: CN
Inventors: 朱泽春; 王涛; 郝会齐
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-06-28
Anticipated expiration: 2031-12-14

Abstract

The utility model discloses a steam cooking utensil convenient to water level detection belongs to food processing technology field, and aim at overcomes the steam rice cooker to the relatively poor defect of liquid level detection precision of water tank. Steam cooking utensil, including the pot body that has the culinary art chamber, install water tank and the lid on the pot body and establish the pot cover on the pot body, the runner has between water tank and the culinary art chamber, is equipped with illuminating part and light receiver on the pot body, and the bottom or the bottom below of water tank are equipped with lens in order to reflect the light of illuminating part to light receiver, and lens have the liquid contact in liquid contact surface and water tank or the runner. Whether there is water in the water tank just can be judged according to light receiver received light intensity, and lens setting is in water tank bottom or water tank below, remains less water when the water tank bottom, as long as remaining water covers liquid contact surface, and light receiver just can sense, has water in the response water tank that can be comparatively accurate.

Description

Steam cooking utensil convenient to water level detects

Technical Field

The utility model belongs to the technical field of food processing, a steam cooking utensil convenient to water level detection is related to.

Background

The existing steam rice cooker detects whether liquid exists in a water tank or not through a magnetic floating ball liquid level switch. The magnetic floating ball is arranged in the water tank, the reed switch is arranged at a specific height outside the water tank, the liquid level in the water tank rises, the magnetic floating ball also rises, the liquid level in the water tank falls, and the magnetic floating ball also falls. When the magnetic floating ball rises to a certain degree, the reed pipe is triggered to form an electric signal, which indicates that a certain amount of liquid is in the water tank. When the magnetic floating ball descends to a certain degree, the reed switch can not be triggered, and the fact that no liquid exists in the water tank or the amount of the liquid is small is indicated.

In the prior art, the water tank has no liquid and retains a small amount of liquid, the reed switch can not be triggered, the power panel can not judge whether no liquid or a small amount of liquid exists in the water tank at the bottom, and the detection precision is poor.

Disclosure of Invention

The utility model discloses the problem to prior art existence provides a steam cooking utensil convenient to water level detection, and aim at overcomes the steam rice cooker to the relatively poor defect of liquid level detection precision of water tank.

The utility model discloses a realize like this:

a steam cooking appliance convenient for water level detection comprises a pot body with a cooking cavity, a water tank arranged on the pot body and a pot cover arranged on the pot body in a covering manner, wherein a flow passage is arranged between the water tank and the cooking cavity,

the pot body is provided with a light emitting piece and a light receiver, a lens is arranged below the bottom or the bottom of the water tank to reflect light of the light emitting piece to the light receiver, and the lens is provided with a liquid contact surface to be in contact with the water tank or liquid in the flow channel.

The light-emitting component sends light and penetrates into lens, when liquid contact surface does not have water, does not have water in the water tank promptly, and light is greater than critical angle from the incident angle of lens to the air, and light can not refract in the air, and all incident light will be reflected by lens, and light can take place the total reflection promptly, and light receiver can receive stronger light.

When the liquid contact surface has water, namely water exists in the water tank, the incident angle of light from the lens to the water is smaller than the critical angle, the light can be partially refracted into the water, only part of the light is reflected to the light receiver from the lens, and the light received by the light receiver is weaker.

Whether there is water in the water tank just can be judged according to light receiver received light intensity, lens setting is in water tank bottom or water tank below, remain less water when the water tank bottom, as long as remaining water covers liquid contact surface, light receiver just can sense, whether there is water in the response water tank that can be comparatively accurate, light receiver and cooking utensil's treater are connected, light receiver gives the treater with light intensity signal transmission, make the treater can judge out whether there is water in the water tank.

Preferably, lens integrated into one piece in the bottom of water tank, the water tank can adopt transparent plastics or glass material to make, and lens integrated into one piece is comparatively simple and convenient in the water tank, need not additionally to install lens. Or lens detachably installs the bottom of water tank, water tank itself can adopt opaque material to make, at the trompil of water tank bottom, sets up lens in trompil department, can improve the flexibility of water tank selection material like this, also be convenient for to the transformation of original water tank, the water tank can adopt original mould to make, improves the commonality of water tank, reduces inventory pressure.

Preferably, the water tank is detachably mounted on the pot body, and the pot body is provided with a detection switch for detecting the mounting or detaching of the water tank on the pot body. When the water tank was dismantled, the light that the illuminating part sent can't reflect through lens, and light receiver can't receive the light of reflection, and light receiver only received ambient light is relatively weak, does not install the state of water tank promptly and installs the state of water tank, and light receiver is received all to be the low light, sets up detection switch and is connected with the treater, and the treater of being convenient for distinguishes and does not install the water tank state and install the water tank state.

Preferably, the detection switch is a microswitch, a transmission part is arranged on the microswitch, and the transmission part is abutted against the water tank; make the micro-gap switch-on after the water tank installation butt to the driving medium, the driving medium return makes the micro-gap switch disconnection after the water tank is dismantled, and the on-state change of micro-gap switch's on and the state change of disconnection correspond the water tank installation and the state change of dismantling, can realize the detection to whether installing the water tank.

Alternatively, the detection switch is a distance sensor. After the water tank is installed, the distance sensor can detect that an object exists in a short distance, and after the water tank is disassembled, the distance sensor cannot detect that the object exists in the short distance, so that the water tank is installed or not is detected.

Preferably, the bottom of the water tank is provided with a water outlet, the water inlet end of the flow channel is provided with a water inlet joint which is in butt joint with the water outlet, and the lens is positioned on the flow channel. When the liquid contact surface has no water, it indicates that there is no water in the water tank, and the scheme can more accurately judge that the water tank is in the water-free state. When the water tank was dismantled, lens still were located the pot body, and light receiver still can receive the stronger light of total reflection, did not install water tank state promptly and install anhydrous water tank state, and light receiver receives all is the highlight, and these two kinds of states all belong to anhydrous supply state, need not to distinguish, can reduce the detection switch who is used for detecting whether to have the installation water tank.

Preferably, the water outlet is provided with a sealing valve, and the water inlet joint is provided with a supporting part which is abutted against the sealing valve to open the water outlet. When the water tank is detached from the pot body, the sealing valve can seal the water outlet, so that water leakage after water is added in the detached state of the water tank is avoided.

Preferably, the caliber of the water outlet is gradually reduced from top to bottom. Therefore, when the sealing valve falls down, the sealing part of the sealing valve is embedded into the water outlet and is abutted and sealed with the inclined side wall of the water outlet, and the condition that the sealing part of the sealing valve cannot be embedded into the water outlet to cause poor sealing is avoided.

Preferably, the sealing valve includes a support frame and a sealing member disposed at an upper end portion of the support frame, an outer diameter of the sealing member and an outer diameter of a lower end portion of the support frame are both greater than a minimum inner diameter of the water outlet, and an outer diameter of the upper end portion of the support frame is smaller than the minimum inner diameter of the water outlet. The lower end part of the larger support frame can prevent the sealing valve from being separated from the water outlet upwards, and once the sealing valve is separated from the water outlet upwards, the sealing valve is difficult to naturally return to the water outlet to seal the water outlet.

Preferably, the pot body is detachably provided with a connecting seat, and the water inlet connector and the lens are positioned on the connecting seat. This facilitates the processing and mounting of the lens.

Preferably, the connecting seat includes an upper chamber and a lower chamber, the supporting portion is located at the bottom of the upper chamber, the lens is located at the bottom of the lower chamber, and the bottom of the upper chamber has a communication hole to communicate the upper chamber with the lower chamber. When water exists in the water tank, the water in the water tank sequentially passes through the water outlet, the upper chamber and the communication hole to enter the lower chamber, so that the liquid contact surface is submerged by the water, and the luminous line receiver detects that the water exists in the water tank.

Preferably, the edge of the water outlet is provided with a water outlet connector extending downwards and inserted into the water inlet connector, and a sealing ring is arranged between the water inlet connector and the water outlet connector. The water outlet joint plays a role in guiding the up-and-down movement of the sealing valve, ensures the moving direction of the sealing valve and is convenient for the sealing valve to smoothly fall to seal the water outlet.

The utility model provides a steam cooking utensil convenient to water level detection just can judge whether there is water in the water tank according to light receiver received light power, and lens setting is in water tank bottom or water tank below, remains less water when the water tank bottom, as long as remaining water covers liquid contact surface, and light receiver just can sense, whether there is water in the response water tank that can be comparatively accurate.

Drawings

FIG. 1 is a schematic view of a steam rice cooker according to an embodiment;

FIG. 2 is an exploded view of a steam rice cooker according to an embodiment;

FIG. 3 is a schematic cross-sectional view of a steam rice cooker according to an embodiment;

FIG. 4 is a schematic view of the path of light when water is present in a water tank according to an embodiment;

FIG. 5 is a schematic view showing the path of light when there is no water in the water tank according to an embodiment;

FIG. 6 is a schematic view of a steam rice cooker according to the second embodiment;

FIG. 7 is a partial sectional view showing a steam rice cooker according to the second embodiment;

FIG. 8 is a schematic view of a second embodiment of the connecting socket;

fig. 9 is a schematic cross-sectional view of the second connecting socket according to the embodiment.

Reference is made to the accompanying drawings in which: 100. a pan body; 110. a cooking cavity; 120. a flow channel; 130. a light emitting member; 140. a light receiver; 150. a detection switch; 160. a connecting seat; 161. a water inlet joint; 162. a support portion; 163. an upper chamber; 164. a lower chamber; 170. photoelectric pair tubes; 200. a water tank; 210. a water outlet; 220. a sealing valve; 221. a support frame; 222. a seal member; 300. a pot cover; 400. a lens; 410. liquid contact surface.

Detailed Description

The following detailed description is made of specific embodiments of the present invention with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and master. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example one

The embodiment provides a steam rice cooker, which is a specific application of the innovative scheme of the utility model on the steam rice cooker. As shown in fig. 1 to 5, the steam rice cooker includes a pot body 100 having a cooking cavity 110, a water tank 200 mounted on the pot body 100, and a pot cover 300 covering the pot body 100, wherein a flow passage 120 is provided between the water tank 200 and the cooking cavity 110, a light emitting member 130 and a light receiver 140 are provided on the pot body 100, a lens 400 is provided at the bottom of the water tank 200 to reflect light of the light emitting member 130 to the light receiver 140, and the lens 400 has a liquid contact surface 410 to be in contact with liquid in the water tank 200.

As shown in fig. 5, in which arrows indicate the paths of light rays, the light emitting member 130 emits light rays to the lens 400, when the liquid contact surface 410 has no water, i.e., the water tank 200 has no water, the incident angle of the light rays from the lens 400 to the air is greater than the critical angle, the light rays are not refracted to the air, all the incident light rays are reflected by the lens 400, i.e., the light rays are totally reflected, and the light ray receiver 140 can receive stronger light rays.

As shown in fig. 4, where the arrows are light paths, when there is water on the liquid contact surface 410, i.e. there is water in the water tank 200, the incident angle of light from the lens 400 to water is smaller than the critical angle, the light will be partially refracted into water, only a part of the light will be reflected from the lens 400 to the light receiver 140, and the light received by the light receiver 140 is weaker.

Whether water exists in the water tank 200 can be judged according to the intensity of light received by the light receiver 140, the lens 400 is arranged at the bottom of the water tank 200 or below the water tank 200, less water is remained at the bottom of the water tank 200, as long as the liquid contact surface 410 is covered by the remained water, the light receiver 140 can sense, whether water exists in the water tank 200 can be sensed accurately, the light receiver 140 is connected with a processor of a cooking appliance, the light receiver 140 transmits a light intensity signal to the processor, and the processor can judge whether water exists in the water tank 200.

The light receiver 140 and the light emitting element 130 are a phototransistor and a light emitting diode, respectively, and are integrated on the photoelectric pair transistor 170.

As shown in fig. 2, 4 and 5, the lens 400 is integrally formed at the bottom of the water tank 200, the water tank 200 may be made of transparent plastic or glass, and the lens 400 is integrally formed in the water tank 200, so that the lens 400 is easy to process and does not need to be additionally installed.

In other optional embodiments, the lens 400 may also be detachably mounted at the bottom of the water tank 200, the water tank 200 itself may be made of an opaque material, a hole is formed in the bottom of the water tank 200, and the lens 400 is disposed at the hole, so that flexibility of material selection of the water tank 200 may be improved, and improvement of the original water tank 200 may also be facilitated, the water tank 200 may be manufactured by using an original mold, universality of the water tank 200 may be improved, and inventory pressure may be reduced.

As shown in fig. 2-3, the water tank 200 is detachably mounted on the pot body 100, and the pot body 100 is provided with a detection switch 150 for detecting the mounting or dismounting of the water tank 200 to or from the pot body 100. When the water tank 200 is disassembled, the light emitted by the light emitting member 130 cannot be reflected through the lens 400, the light receiver 140 cannot receive the reflected light, the light receiver 140 only receives weak ambient light, namely, the state without the water tank 200 and the state with the water tank 200 installed, the light receiver 140 receives weak light, the detection switch 150 is arranged to be connected with the processor, and the processor can distinguish the state without the water tank 200 and the state with the water tank 200 installed. The processor controls the steam generator and the water pump in the pot body 100 to be incapable of working in two states of the steam rice cooker without the water tank 200 and with the anhydrous water tank 200, so that the phenomenon that the steam generator is empty and the water pump idles due to misoperation of a user is avoided, danger is avoided, the use safety of the steam rice cooker is improved, and the service life of the steam rice cooker is prolonged.

The detection switch 150 is a microswitch, a transmission part is arranged on the microswitch, and the transmission part is abutted against the water tank 200; make the micro-gap switch-on after the installation of water tank 200 butt to the driving medium, the driving medium return makes the micro-gap switch disconnection after water tank 200 dismantles, and the on-state change of micro-gap switch's on and the state change of disconnection correspond the state change of water tank 200 installation and dismantlement, can realize the detection to whether installing water tank 200.

In other alternative embodiments, the detection switch 150 may also be a distance sensor. After the water tank 200 is installed, the distance sensor can detect that there is an object in a short distance, and after the water tank 200 is disassembled, the distance sensor can not detect that there is an object in a short distance, so that the detection of whether the water tank 200 is installed or not is realized.

Example two

The main difference between this embodiment and the first embodiment is the location of the lens 400, the first embodiment is to place the lens 400 at the bottom of the water tank 200, and the second embodiment is to place the lens 400 on the pan body 100 below the bottom of the water tank 200.

Specifically, as shown in fig. 6 to 7, the bottom of the water tank 200 has a water outlet 210, the water inlet end of the flow channel 120 is provided with a water inlet connector 161 to be abutted to the water outlet 210, and the lens 400 is located on the flow channel 120. When the liquid contact surface 410 is empty of water, it indicates that there is no water in the water tank 200, and this scheme can more accurately determine that the water tank 200 is in an empty state. When water tank 200 is dismantled, lens 400 still is located pot body 100, light receiver 140 still can receive the stronger light of total reflection, do not install water tank 200 state and installation anhydrous water tank 200 state promptly, light receiver 140 receives all is the highlight, these two kinds of states all belong to anhydrous supply state, steam rice cooker as long as guarantee that steam generator and water pump under the anhydrous supply state do not work can, the treater need not to distinguish to uninstallation water tank 200 state and installation anhydrous water tank 200 state, can reduce and be used for detecting the detection switch 150 who has or not install water tank 200.

The water outlet 210 is provided with a sealing valve 220, and the water inlet connector 161 is provided with a support portion 162 which is abutted against the sealing valve 220 to open the water outlet 210. When the water tank 200 is detached from the pot body 100, the sealing valve 220 can seal the water outlet 210, so as to prevent water leakage after water is added in the detached state of the water tank 200. When the water tank 200 is mounted on the pot body 100, the support portion 162 may push the sealing valve 220 upward, so that the sealing portion of the sealing valve 220 is separated from the water outlet 210 and the water outlet 210 is opened.

As shown in fig. 7, the aperture of the water outlet 210 gradually decreases from top to bottom. Therefore, when the sealing valve 220 falls down, the sealing part of the sealing valve is embedded into the water outlet 210 and abuts against and seals the inclined side wall of the water outlet 210, and the situation that the sealing part of the sealing valve 220 cannot be embedded into the water outlet 210 to cause poor sealing is avoided. In other alternative embodiments, the water outlet 210 may also be a cylindrical hole with a same diameter up and down.

As shown in fig. 7, the sealing valve 220 includes a support frame 221 and a sealing member 222 disposed at an upper end portion of the support frame 221, the sealing member 222 is a sealing portion of the sealing valve 220, an outer diameter of the sealing member 222 and an outer diameter of a lower end portion of the support frame 221 are both greater than a minimum inner diameter of the water outlet 210, and an outer diameter of an upper end portion of the support frame 221 is less than the minimum inner diameter of the water outlet 210. During assembly, the support frame 221 firstly passes through the water outlet 210 from bottom to top, and then the sealing element 222 is sleeved at the upper end of the support frame 221. The larger lower end of the support bracket 221 prevents the sealing valve 220 from separating upward from the water outlet 210, and once the sealing valve 220 separates upward from the water outlet 210, it is difficult to return to the water outlet 210 naturally to seal the water outlet 210.

As shown in fig. 7-9, a connection seat 160 is detachably disposed on the pot body 100, and the water inlet connector 161 and the lens 400 are located on the connection seat 160. This facilitates the processing and mounting of the lens 400. In alternative embodiments, lens 400 may also be disposed on the outer shell of pan body 100.

As shown in fig. 7 to 9, the connection seat 160 includes an upper chamber 163 and a lower chamber 164, the support portion 162 is located at the bottom of the upper chamber 163, the lens 400 is located at the bottom of the lower chamber 164, and the bottom of the upper chamber 163 has a communication hole to communicate the upper chamber 163 and the lower chamber 164. When water is present in the water tank 200, the water in the water tank 200 sequentially passes through the water outlet 210, the upper chamber 163 and the communication hole to enter the lower chamber 164, so that the liquid contact surface 410 is submerged, and thus the light-emitting line receiver 140 detects the presence of water in the water tank 200.

As shown in fig. 7, the edge of the water outlet 210 has a water outlet connector extending downward to be inserted into the water inlet connector 161, and a sealing ring is disposed between the water inlet connector 161 and the water outlet connector. The water outlet joint plays a role in guiding the up-and-down movement of the sealing valve 220, so that the moving direction of the sealing valve 220 is ensured, and the sealing valve 220 can conveniently fall smoothly to seal the water outlet 210.

Other structures and effects of the present embodiment are the same as those of the present embodiment, and are not described herein again.

In the description of the present invention, it is to be understood that the terms "central", "lateral", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It should be understood by those skilled in the art that, although the embodiments of the present invention have been described above, the embodiments are only used for understanding the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. It will be apparent to persons skilled in the relevant art that various changes in form and details can be made therein without departing from the spirit and scope of the embodiments of the invention as disclosed in the appended claims.

Claims

1. A steam cooking appliance convenient for water level detection comprises a pot body with a cooking cavity, a water tank arranged on the pot body and a pot cover arranged on the pot body in a covering manner, wherein a flow passage is arranged between the water tank and the cooking cavity,

2. The steam cooking appliance for facilitating water level detection according to claim 1, wherein the lens is integrally formed at the bottom of the water tank or the lens is detachably mounted at the bottom of the water tank.

3. The steam cooking appliance convenient for water level detection according to claim 1 or 2, wherein the water tank is detachably mounted on the pot body, and the pot body is provided with a detection switch for detecting that the water tank is mounted on or detached from the pot body.

4. The steam cooking appliance convenient for water level detection according to claim 3, wherein the detection switch is a micro switch, a transmission member is arranged on the micro switch, and the transmission member is abutted against the water tank;

alternatively, the detection switch is a distance sensor.

5. The steam cooking appliance facilitating water level detection according to claim 1, wherein the bottom of the water tank is provided with a water outlet, the water inlet end of the flow channel is provided with a water inlet joint to be in butt joint with the water outlet, and the lens is positioned on the flow channel;

the water outlet is provided with a sealing valve, and the water inlet joint is provided with a supporting part which is abutted against the sealing valve to open the water outlet.

6. The steam cooking appliance for facilitating water level detection according to claim 5, wherein the caliber of the water outlet is gradually reduced from top to bottom.

7. The steam cooking appliance for facilitating water level detection of claim 5, wherein the sealing valve comprises a support frame and a sealing member disposed at an upper end portion of the support frame, an outer diameter of the sealing member and an outer diameter of a lower end portion of the support frame are both larger than a minimum inner diameter of the water outlet, and an outer diameter of an upper end portion of the support frame is smaller than the minimum inner diameter of the water outlet.

8. The steam cooking appliance convenient for water level detection according to any one of claims 5 to 7, wherein a connecting seat is detachably provided on the pot body, and the water inlet connector and the lens are located on the connecting seat.

9. The steam cooking appliance convenient for water level detection according to claim 8, wherein the connection seat includes an upper chamber and a lower chamber, the support part is located at the bottom of the upper chamber, the lens is located at the bottom of the lower chamber, and the bottom of the upper chamber has a communication hole to communicate the upper chamber and the lower chamber.

10. The steam cooking appliance for facilitating water level detection according to any one of claims 5 to 7, wherein the edge of the water outlet has a downwardly extending water outlet connector to be inserted into the water inlet connector, and a sealing ring is disposed between the water inlet connector and the water outlet connector.