Liquid heater capable of detecting liquid level across air

Abstract

The utility model relates to kitchen appliances, in particular to a liquid heater capable of detecting liquid level across the air, which comprises a glass cup body and a handle mounted on one side of the glass cup body, and is characterized in that a detection plate component for detecting the liquid level across the air is arranged between the glass cup body and the handle in a hidden manner, and a hook is arranged at the top of the detection plate component. The detection plate assembly is hooked on the cup edge of the glass cup body through the hook for positioning, and the detection plate assembly is tightly pressed on the outer wall of the glass cup body through the handle. According to the liquid heater, a good installation structure is designed, the detection plate assembly can be reliably positioned on the outer wall of the glass cup body, position deviation is not prone to occurring, installation is easy, and manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to a kitchen appliance, in particular to a liquid heater capable of detecting liquid level in the air. Background Art

[0002] Prior art CN201610753199.4 discloses that a signal PCB board is provided between the cup body and the hand-held handle of a food processor, and a metal sheet is provided on the signal PCB board. When the volume of the food in the cup body changes, the capacitor formed by the metal sheet and the food in the cup body will generate a charge signal, and the signal PCB board will then transmit the charge signal to the control circuit board. The control circuit board can judge the height of the current food liquid level in the cup body according to the transmitted signal. At the same time, the control circuit board controls the electric heating element or the knife group according to the current liquid level, thereby effectively controlling the change of the liquid level of the food and preventing food from overflowing. However, in this solution, there is an installation gap between the signal PCB board and the cup body, and the signal PCB board has no reliable positioning structure relative to the cup body, and the relative positions of the two are not fixed. Based on this, the signal PCB board cannot accurately identify the overflow signal. Therefore, the above-mentioned food processor still does not completely solve the problem of food overflow.

[0003] In order to make the detection plate and the cup body have a relatively better positioning relationship. The applicant previously proposed a patent with application number CN201720526032.4. The patent discloses that the capacitive sensing plate is positioned on the outer wall of the glass cup through a handle shell. During the installation process, two symmetrical and oppositely spliced ​​and fixed handle covers need to clamp the handle while clamping the capacitive sensing plate, so as to achieve the positioning of the capacitive sensing plate while fixing the handle shell, and ensure the relative position relationship between the capacitive sensing plate and the glass cup body. Although in this solution, the capacitive sensing plate and the glass cup body are in a relatively fixed relationship and no displacement will occur between the two, in this structure, a handle is required to be provided on the glass cup body to position the handle shell, and then the capacitive sensing plate is fixed and limited by the positioning of the handle shell. Not only is the installation structure complicated, but also when there is an assembly error between the handle shell and the handle, it will cause the capacitive sensing plate to detect the liquid level signal inaccurately. What's more, the existing food processing machines or health pots use a large amount of tubular glass, and tubular glass cannot be integrally formed into a handle structure on the glass cup body. Therefore, the above solution cannot be applied to tubular glass cup bodies.

[0004] In addition, the prior art CN201921962352.X also discloses a capacitive continuous liquid level detection structure and an electric kettle thereof. In this scheme, the outer surface of the kettle body of the electric kettle is an arc-shaped structure, so a soft PFB board is pasted on the outer wall of the kettle body. Although the soft PFB board can solve the problem of installing the liquid level detection board on the glass cup body of the tube material, the soft PFB board has a higher manufacturing cost and is more prone to damage. Moreover, during the boiling process of the electric kettle, the high temperature of the outer wall of the kettle can easily cause the denaturation of the adhesive, which not only affects the adhesive effect of the detection board for long-term use, but also the denatured adhesive may cause damage to the printed circuit on the detection board. Based on this, how to reliably position and install the liquid level detection board on the outer wall of the glass cup body has always been a difficulty for R&D engineers who want to apply the remote detection technology to kitchen appliances to detect liquid levels. Utility Model Content

[0005] The purpose to be achieved by the utility model is to provide a liquid heater for detecting liquid level in the air. The liquid heater is designed with a better installation structure, which can realize the reliable positioning of the detection plate assembly on the outer wall of the glass cup body, is not prone to position displacement, is simple to install, and has a low manufacturing cost.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a liquid heater for detecting liquid level in the air, comprising a glass cup body and a handle installed on one side of the glass cup body, characterized in that a detection plate assembly for detecting liquid level in the air is hidden between the glass cup body and the handle, a hook is provided on the top of the detection plate assembly, the detection plate assembly is positioned by hooking on the edge of the glass cup body, and the handle presses the detection plate assembly against the outer wall of the glass cup body.

[0007] Furthermore, the detection board assembly includes a PCB detection board and a hook connected to the upper end of the PCB detection board, and the hook is arranged at the upper end of the hook.

[0008] Furthermore, the hook is movably mounted on the PCB detection board;

[0009] Alternatively, the hook is fixed integrally with the PCB detection board;

[0010] Alternatively, a first sealing gasket is provided between the glass body and the PCB detection board;

[0011] Alternatively, a second sealing gasket is provided between the PCB detection board and the handle, and the handle presses the second sealing gasket so that the PCB detection board is closely attached to the outer wall of the glass cup body.

[0012] Furthermore, the detection board assembly includes a PCB detection board and a sealing member that wraps the PCB detection board, and the hook is arranged on the top of the sealing member.

[0013] Furthermore, the sealing member includes a base portion and a covering portion with one end hinged to the base portion and the other end being flippable relative to the base portion, and when the covering portion is covered on the base portion, the PCB detection board is sealed in the accommodating cavity enclosed by the covering portion and the base portion;

[0014] Alternatively, the sealing member includes a bonding layer clamped between the PCB detection board and the glass cup body, and the thickness of the bonding layer is not greater than 4 mm.

[0015] Furthermore, a limiting notch is provided at the mouth of the glass body, and the hook is hooked at the limiting notch;

[0016] Alternatively, a slot is provided at the upper end of the handle, the mouth of the glass cup body is inserted into the slot, and the slot presses the hook onto the mouth of the cup.

[0017] Furthermore, the handle includes a connecting plate connecting the upper and lower ends, and a plurality of protrusions are provided on the side of the connecting plate facing the detection board assembly, and the handle is pressed against the detection board assembly through the protrusions.

[0018] Furthermore, the outer wall of the glass body is arc-shaped, and the detection plate assembly has an arc-shaped surface adapted to the outer wall of the glass body, and the detection plate assembly is tightly attached to the outer wall of the glass body through the arc-shaped surface.

[0019] Furthermore, the detection board assembly includes a PCB detection board, on which a capacitor electrode for detecting liquid level and a processing chip electrically connected to the capacitor electrode are provided, the capacitor electrode includes a plurality of first capacitor electrodes and a plurality of second capacitor electrodes arranged at intervals, the plurality of first capacitor electrodes form a water level detection area on the PCB detection board, and the plurality of second capacitor electrodes form an anti-overflow detection area on the PCB detection board, and the anti-overflow detection area is located above the water level detection area.

[0020] Further, the plurality of first capacitor electrodes and the plurality of second capacitor electrodes are electrically connected to the processing chip one by one through printed circuits on the PCB detection board, wherein the detection height of a single second capacitor electrode is greater than the detection height of a single first capacitor electrode;

[0021] Alternatively, a dividing groove is provided on the overflow prevention detection area of ​​the PCB detection board, and the dividing groove divides the overflow prevention detection area into a first sub-overflow prevention detection area and a second sub-overflow prevention detection area arranged side by side, and each second capacitor electrode is divided into two sub-electrode pieces respectively located in two columns of sub-overflow prevention detection areas, and each sub-electrode piece of the two columns of sub-overflow prevention detection areas is electrically connected to the processing chip one by one through printed circuits, wherein, at the same liquid level height below the highest point of the overflow prevention detection area, the sensing area of ​​the first sub-overflow prevention detection area is not equal to the sensing area of ​​the second sub-overflow prevention detection area.

[0022] Most of the existing liquid heaters use tubular glass to make the cup body. Due to the fragility of the tubular glass material, it is impossible to set screw positions, snap positions and other structures on the glass surface to fix the detection plate. Of course, fiberglass, tempered glass, bulletproof glass and other materials with higher strength and thickness can meet the above requirements, but this type of glass material greatly increases the manufacturing cost and cannot be used in batches. Based on this, the existing technology generally uses gluing or handle positioning to install the detection plate. However, the environment in which the liquid heater is used will cause the gluing effect to gradually deteriorate, affecting the accuracy of the detection when the liquid heater is used for a long time. And the positioning of the handle is easy to form assembly tolerances, causing the detection plate to deviate relative to the glass cup body, and the detection accuracy will also be reduced. What's more, a positioning structure for positioning the handle must be set on the glass cup body.

[0023] For the present application, a hook is arranged on the top of the detection plate assembly, and the hook is used to hook on the edge of the glass cup body, so that the detection plate assembly can be positioned on the outer wall of the glass cup body. Compared with the prior art, the problem that the detection plate assembly and the glass cup body cannot be directly positioned and displacement deviation is prone to occur is effectively solved. Moreover, the technical solution of the present application can also ensure the accuracy of the detection plate assembly in detecting the liquid level in long-term use. At the same time, since the hook is directly arranged on the detection plate assembly, no other components are required for positioning during the installation process, and not only the installation method is simple, but also the positioning structure is simple. In addition, in order to prevent the lower end of the detection plate assembly from moving relative to the glass cup body, the present utility model is also provided with a handle to hold the detection plate assembly, so that the detection plate assembly is more tightly fitted on the glass cup body, further improving the accuracy of the detection plate assembly in detecting the liquid level, and reducing the influence of external parasitic capacitance on the detection plate assembly. Moreover, the handle can also be used to hide the detection plate assembly between the glass cup body and the handle, which can effectively avoid the damage and water inflow caused by the exposure of the detection plate assembly. In addition, the liquid heater of the present utility model has a lower manufacturing cost and is more conducive to batch application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described below in conjunction with the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the structure of the first embodiment of the liquid heater of the utility model;

[0026] Figure 2 for Figure 1 The structural diagram at A in the middle;

[0027] Figure 3 for Figure 2 A partial cross-sectional schematic diagram of XX;

[0028] Figure 4 for Figure 1Schematic diagram of the structure of the PCB detection board facing the glass cup body;

[0029] Figure 5 for Figure 1 Another structural schematic diagram of the PCB detection board facing the glass body;

[0030] Figure 6 This is a partial structural diagram of the second embodiment of the utility model;

[0031] Figure 7 for Figure 6 A partial cross-sectional schematic diagram of XX;

[0032] Figure 8 This is a schematic diagram of the decomposed structure of Example 2. DETAILED DESCRIPTION

[0033] Embodiment 1:

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 The figure shows a schematic diagram of the structure of a liquid heater of the utility model. The liquid heater is a food processor for making soy milk beverages, comprising a glass cup body 1 forming a pulping container 10 and a cup cover (not shown) mounted on the glass cup body 1, a heating device 4 for heating the pulping container 10 and a fixing seat 7 for fixing the heating device 4 and the glass cup body 1 are arranged at the bottom of the glass cup body 1, and a motor 3 is arranged in the installation cavity 20 below the glass cup body 1, a rotating shaft 31 driven by the motor 3 penetrates the fixing seat 7 and the heating device 4 and extends into the pulping container 10, and a crushing blade 2 is connected to the end of the rotating shaft 31. At the same time, a handle 5 is installed on one side of the glass cup body 1, and a detection plate assembly 6 for detecting the liquid level in the air is hidden between the glass cup body 1 and the handle 5. A hook 60 is set on the top of the detection plate assembly 6. The detection plate assembly 6 is hooked on the edge of the glass cup body 1 by the hook 60 for positioning, and the handle 5 presses the detection plate assembly 6 against the outer wall of the glass cup body 1.

[0035] In this embodiment, the detection board assembly 6 includes a PCB detection board 61 and a hook member integrally formed with the PCB detection board 61, and the hook 60 is arranged on the hook member. At the same time, a card slot 50 is arranged at the upper end of the handle 5, and the cup edge of the glass cup body 1 extends into the card slot 50, so that the upper end of the handle 5 is fixed to the glass cup body 1, wherein the hook 60 is located below the card slot 50, and the card slot 50 presses the hook 60 on the cup edge. In addition, the lower end of the handle 5 is fixed to the fixing seat 7 by a screw (not marked in the figure), and after the handle 5 is fixed, a pressing effect can be formed on the PCB detection board 61, so that the PCB detection board 61 is closely attached to the outer wall of the glass cup body 1.

[0036] In addition, in this embodiment, the handle 5 includes a connecting plate 51 connecting the upper and lower ends, and a plurality of protrusions 52 are provided on the side of the connecting plate 51 facing the PCB detection board 61, and the handle 5 is pressed against the PCB detection board 61 through the protrusions 52. At the same time, in this embodiment, the outer wall of the glass cup body 1 is arc-shaped, the PCB detection board 61 is a hard board, and the PCB detection board 61 has an arc-shaped surface 611 adapted to the outer wall of the glass cup body 1, and the PCB detection board 61 is closely attached to the outer wall of the glass cup body 1 through the arc-shaped surface 611.

[0037] It should be pointed out that in this embodiment, the PCB detection board 61 is provided with a capacitor electrode for detecting the liquid level and a processing chip (not shown in the figure) electrically connected to the capacitor electrode, wherein the capacitor electrode is arranged on the side of the PCB detection board facing the glass cup body, that is, the front side, and the processing chip is arranged on the back side of the PCB detection board. The capacitor electrode includes a plurality of first capacitor electrodes 612 and a plurality of second capacitor electrodes 613 arranged at intervals, wherein the plurality of first capacitor electrodes 612 form a water level detection area 6120 on the PCB detection board 61, and the plurality of second capacitor electrodes 613 form an anti-overflow detection area 6130 on the PCB detection board 61, wherein the anti-overflow detection area 6130 is located above the water level detection area 6120, and the plurality of first capacitor electrodes 612 and the plurality of second capacitor electrodes 613 are electrically connected to the processing chip one by one through the printed circuit (not shown in the figure) on the PCB detection board 61, wherein the detection height of a single second capacitor electrode 613 is greater than the detection height of a single first capacitor electrode 612.

[0038] For existing liquid heaters, most of them use tubular glass to make the cup body. Due to the fragility of the tubular glass material, it is impossible to set screw positions, snap positions and other structures on the glass surface to fix the detection board. Of course, fiberglass, tempered glass, bulletproof glass and other materials with higher strength and thickness can meet the above requirements, but this type of glass material greatly increases the manufacturing cost and cannot be used in batches. Based on this, the existing technology generally uses gluing or handle positioning to install the detection board. However, the environment in which the liquid heater is used will cause the gluing effect to gradually deteriorate, affecting the accuracy of detection when the liquid heater is used for a long time. And the positioning of the handle is easy to form assembly tolerances, causing the detection board to offset relative to the glass cup body, and the detection accuracy will also be reduced, not to mention that a positioning structure for positioning the handle is also provided on the glass cup body.

[0039] For this embodiment, a hook is set on the top of the PCB detection board, and the hook is used to hook on the edge of the glass cup body, so that the PCB detection board can be positioned on the outer wall of the glass cup body. Compared with the prior art, it effectively solves the problem that the PCB detection board and the glass cup body cannot be directly positioned, and displacement deviation is prone to occur. Moreover, the technical solution of this embodiment can also ensure the accuracy of the PCB detection board in detecting the liquid level during long-term use. At the same time, since the hook is directly set on the PCB detection board, no other components are required for positioning during the installation process, not only the installation method is simple, but also the positioning structure is simple. In addition, in order to prevent the lower end of the PCB detection board from moving relative to the glass cup body, a handle is also provided in this embodiment to hold the PCB detection board, so that the PCB detection board is more tightly attached to the glass cup body, further improving the accuracy of the PCB detection board in detecting the liquid level, and reducing the influence of external parasitic capacitance on the PCB detection board. Moreover, the handle can also be used to hide the PCB detection board between the glass cup body and the handle, which can effectively avoid the damage and water inflow caused by the exposure of the PCB detection board. In addition, the liquid heater of this embodiment has a lower manufacturing cost and is more conducive to batch application.

[0040] It should be noted that, for this embodiment, the hook and hanger can also be relatively independent of the PCB detection board, and the two are fixed together by a fixed structure. Of course, the hook and hanger can also be movably mounted on the PCB detection board, so that the same detection board assembly can be adjusted to match different glass cup bodies according to different cup body capacities. In order to prevent water stains from entering between the glass cup body and the PCB detection board, a first sealing gasket can be set between the glass cup body and the PCB detection board. At the same time, since the PCB detection board is pressed on the glass cup body by the handle, and the PCB detection board is a rigid board with circuit components and printed circuits arranged thereon, in order to prevent damage to the above-mentioned devices, a second sealing gasket can also be set between the PCB detection board and the handle to isolate the two. At the same time, the second sealing gasket also has the function of waterproof sealing the PCB detection board.

[0041] Moreover, in the present embodiment, the PCB detection board is designed to be a curved surface structure that matches the arc of the glass body, so that the PCB detection board can better fit the glass body. Of course, for the present embodiment, the PCB detection board can also be a soft board or a rectangular strip board. For the liquid heating of the present embodiment, the PCB detection board is provided with a water level detection area and an anti-overflow detection area respectively arranged by a plurality of first capacitor electrodes and a plurality of second capacitor electrodes, which can realize the water level detection of a variety of different pulping capacities, and can also realize the detection of different anti-overflow signals corresponding to a variety of different pulping capacities. Compared with the existing anti-overflow detection position with only one fixed position, the present embodiment can realize more intelligent production of slurry beverages, with higher pulping efficiency. While ensuring the production of one or more beverages, it can also solve the problems of only one fixed anti-overflow detection position in the prior art, which is prone to failure, too long anti-overflow time, and slurry foam sticking to the wall. In addition, this embodiment uses different pulping capacities corresponding to different anti-overflow detection positions, which not only ensures that there will be no slurry overflow, but also has a higher space utilization rate for the pulping container, can optimize the pulping efficiency, and avoid problems such as too long pulping time or poor crushing.

[0042] Among them, the first capacitor electrode in the water level detection area is used to detect the pulping water level under the corresponding pulping capacity, and the second capacitor electrode in the anti-overflow detection area is used to detect the anti-overflow height reached by the slurry under the corresponding pulping capacity during the pulping process. When the second capacitor electrode detects that the slurry of the current pulping capacity has reached the preset anti-overflow detection position, the processing chip will transmit the signal to the main control device, and the main control device will perform corresponding operations according to the program settings, such as stopping the motor and stopping the heating to wait for overflow. However, during the pulping process, when the slurry is whipped or heated, bubbles, foam and other substances will rise on the surface of the slurry, and the capacitance value of the capacitor electrode sensing bubbles and foam fluctuates slightly, and the processing chip cannot accurately identify whether it is a parasitic capacitor or an actual anti-overflow signal. For the food processing machine of the present embodiment, since the detection height of a single second capacitor electrode is greater than the detection height of a single first capacitor electrode, the second capacitor electrode has a larger sensing area during actual detection, and can obtain a larger fluctuating capacitance value, thereby achieving more accurate anti-overflow signal detection. Compared with the prior art, it can detect rising bubbles, foams and other anti-overflow signals, effectively solving the problem that the existing single type of capacitor electrode can only detect the water level more accurately but cannot effectively detect the anti-overflow signal, greatly reducing the safety risk of overflow of bubbles, foams and other slurries that are prone to occur during the application of the existing capacitive anti-overflow detection technology.

[0043] Since the PCB detection board is bonded to the outside of the glass, and considering that the PCB detection board detects and judges the liquid level signal by detecting the change in capacitance value, the presence of water flow during the user's use, the user touching the installation structure position of the PCB detection board, etc., will cause the capacitance value of the capacitor electrode on the PCB detection board to change, resulting in abnormal liquid level detection, overflow during the pulping process, and other risks. Therefore, in this embodiment, it is also possible to set a grid copper shield on the three sides of the water level detection area and the anti-overflow detection area of ​​the PCB detection board and the rear surface of the PCB detection board, which can eliminate the inductive interference of the outside world on the capacitor electrode to the maximum extent, effectively solve the abnormal capacitance value fluctuation caused by the presence of condensed water on the side of the PCB detection board after assembly or the user's hand touching, resulting in abnormal detection results, and ensure detection reliability.

[0044] In addition, for this embodiment, the capacitor electrodes of the PCB detection board can also be arranged as follows: Figure 5 The structure shown: wherein, a dividing groove 600 is provided on the anti-overflow detection area of ​​the PCB detection board, and the dividing groove 600 divides the anti-overflow detection area into a first sub-anti-overflow detection area and a second sub-anti-overflow detection area arranged side by side, and each second capacitor electrode is divided into two sub-electrode pieces respectively located in two columns of sub-anti-overflow detection areas, and each sub-electrode piece of the two columns of sub-anti-overflow detection areas is electrically connected to the processing chip one by one through printed circuits, wherein, at the same liquid level height below the highest point of the anti-overflow detection area, the sensing area of ​​the first sub-anti-overflow detection area is not equal to the sensing area of ​​the second sub-anti-overflow detection area.

[0045] During the overflow prevention detection process, the processing chip obtains the cumulative value ΔC of the capacitance value increment detected by each sub-electrode piece in the first sub-overflow prevention detection area. tri1 and the cumulative value ΔC of the capacitance increment detected by each sub-electrode in the second sub-overflow prevention detection area tri2 , and according to ΔC tri1 With ΔC tri2 The current anti-overflow height is determined by the ratio of . Since the foam on the slurry surface is uneven during the pulping process, by obtaining the cumulative values ​​of the capacitance values ​​detected by the two sub-anti-overflow detection areas for ratio comparison, an anti-overflow signal closer to the actual anti-overflow detection position can be obtained, thereby effectively avoiding the overflow of slurry such as bubbles and foam during the pulping process. Therefore, the anti-overflow signal detection using the liquid heater of the utility model is more reliable and is not prone to the safety risk of slurry overflow.

[0046] It should be noted that the above structural changes of this embodiment can also be applied to other embodiments of the utility model.

[0047] Embodiment 2:

[0048] like Figure 6 , Figure 7 , Figure 8 The figure is a schematic diagram of the structure of the second embodiment of the utility model. The difference between this embodiment and the first embodiment is that: in this embodiment, the detection board assembly includes a PCB detection board 61 and a sealing member 62 that wraps the PCB detection board 61, and the hook 60 is arranged on the top of the sealing member 62. Among them, the sealing member 62 includes a base portion 621 and a covering portion 622 with one end hinged to the base portion and the other end flipped relative to the base portion 621. When the covering portion 622 covers the base portion 621, the PCB detection board 61 is sealed in the accommodating cavity enclosed by the covering portion 622 and the base portion 621. In this embodiment, the PCB detection board is first loaded into the accommodating cavity formed by the cover part 622 and the base part 621, and then the hook 60 arranged at the top of the base part 621 is hooked on the edge of the glass body 1 to realize the preliminary positioning of the detection board assembly on the glass body 1, and then the upper end of the handle 5 is hooked on the edge of the cup, and the flexible hook 60 is pressed to prevent the hook 60 from loosening. At the same time, the middle part of the handle 5 is pressed on the cover part 622, so that the PCB detection board 61 is pressed against the base part 621, so that the flexible base part 621 is closely attached to the outer wall of the glass body 1. Among them, the base part 621 forms a bonding layer clamped between the PCB detection board 61 and the glass body 1. For this embodiment, the thickness of the bonding layer is required to be no more than 4 mm. If the thickness of the bonding layer is greater than 4 mm, not only will it be easy for the PCB detection board 61 to be unable to sense the liquid level signal due to the long distance, but it will also easily cause the handle 5 to bulge during installation. There will be a large installation gap between the handle 5 and the glass cup body 1, making it easier for the PCB detection board to become ineffective due to water ingress. In this embodiment, the width between the handle 5 and the glass cup body 1 for installing the detection board assembly does not exceed 15 mm, preferably 5 mm to 10 mm, and the thickness of the bonding layer is generally selected to be 0.5 mm to 2 mm.

[0049] In addition, in order to prevent the hook 60 from slipping on the edge of the cup, a limiting notch 11 is set at the cup mouth of the glass cup body 1, and the hook 60 is hooked at the limiting notch 11, and the upper end of the handle 5 is also hooked at the limiting notch 11, and the positioning installation of the handle 5 can also be achieved at the same time.

[0050] It should be noted that, for this embodiment, the seal wraps the PCB detection board, which can not only prevent water from entering the PCB detection board, but also prevent water stains from existing between the outer wall of the glass body and the PCB detection board. Of course, the lower end of the seal can be provided with an outlet for the wiring harness of the PCB detection board to pass through and be electrically connected to the main control. At the same time, for the seal of the utility model, its structure is not limited to the scheme disclosed in this embodiment, and the seal can also be integrally formed on the PCB detection board; or, the seal is formed by pouring glue on the outside of the PCB detection board.

[0051] Similarly, this embodiment has the same beneficial effects as the first embodiment, and this embodiment will not be described in detail. It should be noted that the above structural changes and parameter selections of this embodiment can also be applied to other embodiments of the utility model.

[0052] In addition, it should be noted that the liquid heater of the utility model is not limited to the food processor with integrated motor and cup body disclosed in the embodiment of the utility model, but can also be a soymilk machine with motor mounted on top, a wall-breaking machine with cup body and base separated, and a food processor that can realize automatic pulp discharge and automatic cleaning without hand washing. Moreover, the liquid heater of the utility model can also be applied to heating appliances that can perform pulp boiling operations, rice paste making, etc., such as health pots, health pots, etc.

[0053] Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A liquid heater for detecting liquid level in the air, comprising a glass body and a handle mounted on one side of the glass body, characterized in that: A detection plate assembly for detecting liquid level in the air is hidden between the glass body and the handle, a hook is provided on the top of the detection plate assembly, the detection plate assembly is hooked on the edge of the glass body through the hook, and the handle presses the detection plate assembly against the outer wall of the glass body.

2. The liquid heater for detecting liquid level in the air according to claim 1, characterized in that: The detection board assembly includes a PCB detection board and a hook member connected to the upper end of the PCB detection board, and the hook is arranged at the upper end of the hook member.

3. The liquid heater for detecting liquid level in the air according to claim 2, characterized in that: The hook is movably mounted on the PCB detection board; Alternatively, the hook is fixed integrally with the PCB detection board; Alternatively, a first sealing gasket is provided between the glass body and the PCB detection board; Alternatively, a second sealing gasket is provided between the PCB detection board and the handle, and the handle presses the second sealing gasket so that the PCB detection board is closely attached to the outer wall of the glass cup body.

4. The liquid heater for remotely detecting liquid level according to claim 1, characterized in that: The detection board assembly includes a PCB detection board and a sealing member that wraps the PCB detection board, and the hook is arranged on the top of the sealing member.

5. The liquid heater for remotely detecting liquid level according to claim 4, characterized in that: The sealing member comprises a base part and a covering part, one end of which is hinged to the base part and the other end of which is flippable relative to the base part. When the covering part is covered on the base part, the PCB detection board is sealed in the accommodating cavity enclosed by the covering part and the base part. Alternatively, the sealing member includes a bonding layer clamped between the PCB detection board and the glass cup body, and the thickness of the bonding layer is not greater than 4 mm.

6. The liquid heater for remotely detecting liquid level according to any one of claims 1 to 5, characterized in that: The cup mouth of the glass cup body is provided with a limiting notch, and the hook is hooked at the limiting notch; Alternatively, a slot is provided at the upper end of the handle, the mouth of the glass cup body is inserted into the slot, and the slot presses the hook onto the mouth of the cup.

7. The liquid heater for remotely detecting liquid level according to any one of claims 1 to 5, characterized in that: The handle includes a connecting plate connecting the upper and lower ends, and a plurality of protrusions are arranged on one side of the connecting plate facing the detection board assembly, and the handle is pressed against the detection board assembly through the protrusions.

8. The liquid heater for remotely detecting liquid level according to any one of claims 1 to 5, characterized in that: The outer wall of the glass body is arc-shaped, and the detection plate assembly has an arc-shaped surface adapted to the outer wall of the glass body, and the detection plate assembly is tightly attached to the outer wall of the glass body through the arc-shaped surface.

9. The liquid heater for remotely detecting liquid level according to claim 1, characterized in that: The detection board assembly includes a PCB detection board, on which a capacitor electrode for detecting the liquid level and a processing chip electrically connected to the capacitor electrode are arranged, the capacitor electrode includes a plurality of first capacitor electrodes and a plurality of second capacitor electrodes arranged at intervals, the plurality of first capacitor electrodes form a water level detection area on the PCB detection board, and the plurality of second capacitor electrodes form an anti-overflow detection area on the PCB detection board, and the anti-overflow detection area is located above the water level detection area.

10. The liquid heater for remotely detecting liquid level according to claim 9, characterized in that: The plurality of first capacitor electrodes and the plurality of second capacitor electrodes are electrically connected to the processing chip one by one through printed circuits on the PCB detection board, wherein the detection height of a single second capacitor electrode is greater than the detection height of a single first capacitor electrode; Alternatively, a dividing groove is provided on the overflow prevention detection area of ​​the PCB detection board, and the dividing groove divides the overflow prevention detection area into a first sub-overflow prevention detection area and a second sub-overflow prevention detection area arranged side by side, and each second capacitor electrode is divided into two sub-electrode pieces respectively located in two columns of sub-overflow prevention detection areas, and each sub-electrode piece of the two columns of sub-overflow prevention detection areas is electrically connected to the processing chip one by one through printed circuits, wherein, at the same liquid level height below the highest point of the overflow prevention detection area, the sensing area of ​​the first sub-overflow prevention detection area is not equal to the sensing area of ​​the second sub-overflow prevention detection area.

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