Water pan structure and refrigerator

Abstract

The utility model discloses a water pan structure and a refrigerator. The water pan structure comprises a water pan body, a heating structure and a detection module, wherein the heating structure and the detection module are located in the water pan body. A first electric contactor is arranged at the bottom in the water pan body, and at least one second electric contactor is arranged on the side wall in the water pan body; the detection module is respectively connected with the first electric contactor and the second electric contactor, and the detection module is used for monitoring the resistance change generated along with the change of the liquid level between the first electric contactor and the second electric contactor, and determining the liquid level of the water pan body according to the resistance change. According to the water pan, the condensate water in the water pan body is rapidly evaporated through the heating structure, the risk that the water pan body overflows due to excessive water is prevented, potential safety hazards are prevented from being brought to a user, the safety in the using process is improved, and a safer, more reliable and more comfortable using environment is provided for the user.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration technical field especially relates to a water pan structure and refrigerator. BACKGROUND

[0002] At present, most of the refrigerator will be water pan close setting in the top of refrigerator mechanical room compressor, mainly used for collecting condensed water, the water vapor in the air-cooled refrigerator refrigeration chamber after meeting refrigeration chamber evaporator, condensation on the tank wall and form hoar, when the compressor stops, the hoar on the tank surface melts along the drain pipe and flows into the water pan, when the compressor starts, use the heat generated when the compressor runs to evaporate the condensed water in the water pan, to reasonably use the waste heat of the compressor, improve energy efficiency.

[0003] This causes the water pan to have sufficient volume and be close enough to the compressor, and maintain air convection unobstructed, but there is still a risk that the heat generated when the compressor is running is not enough to quickly evaporate the condensed water in the water pan, causing the water pan to overflow, which poses a safety hazard to the user.

[0004] Therefore, how to provide a water pan structure that can detect the water level of the water pan and prevent the water pan from overflowing is a problem to be solved. SUMMARY

[0005] The utility model provides a water pan structure and refrigerator for solving the problem of the water pan overflowing in the prior art.

[0006] The technical scheme of the utility model provides a water pan structure, which comprises a water pan body, a heating structure and a detection module in the water pan body.

[0007] A first electric contactor is arranged at the bottom of the water pan body, and at least one second electric contactor is arranged on the side wall of the water pan body.

[0008] The detection module is connected to the first electric contactor and the second electric contactor, and is used to monitor the change in resistance between the first electric contactor and the second electric contactor caused by the change in liquid level, and determine the liquid level of the water pan body according to the change in resistance.

[0009] Further, a plurality of second electric contactors at different heights are arranged on the side wall of the water pan body.

[0010] Further, the distance between any two adjacent second electric contactors on the side wall of the water pan body is the same.

[0011] Further, the plurality of second electric contactors are arranged on the same vertical line.

[0012] Further, the detection module comprises a gate chip U1, a resistor R1, a resistor R2, a capacitor C1 and a capacitor C3.

[0013] The gate chip U1 is connected with all the second electric contactors and at least two digital output terminals of the master control unit respectively.

[0014] The first end of the resistor R1 is used for connecting the PWM output terminal of the master control unit, the second end of the resistor R1 is connected with the first end of the resistor R2 and the first end of the capacitor C1 respectively, and the second end of the capacitor C1 is used for connecting the first electric contactor.

[0015] The second end of the resistor R2 and the first end of the capacitor C3 are both used for connecting the collection terminal of the master control unit, and the second end of the capacitor C3 is grounded.

[0016] Further, the detection module further comprises a capacitor C2.

[0017] The first end of the capacitor C2 is connected between the second end of the resistor R1 and the first end of the resistor R2, and the second end of the capacitor C2 is grounded.

[0018] Further, the model of the gate chip U1 is any one of MC74HCT4051ADR2G, CD4051B, SN74CBT3251 and MAX306.

[0019] Further, the calculation formula of the heating power P of the heating structure is:

[0020]

[0021] Wherein, P max is the maximum heating power of the heating structure, n is the nth second electric contactor counted from the bottom of the water pan body, and N is the total number of the second electric contactors.

[0022] The utility model further provides a refrigerator, the refrigerator includes above-mentioned water pan structure.

[0023] Further, the refrigerator further comprises a compressor.

[0024] The water pan structure is not arranged on the top of the compressor.

[0025] Compared with the prior art, the utility model has at least the following beneficial effects:

[0026] The detection module can detect the liquid level of the water pan body through the resistance change between the first electric contactor and the second electric contactor, and evaporate the condensed water in the water pan body quickly through the heating structure, so that the risk of too much water in the water pan body and overflow is prevented, the safety hidden danger to the user is avoided, the safety in use is improved, and a safer, more reliable and comfortable use environment is provided for the user. BRIEF DESCRIPTION OF DRAWINGS

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terminology used in the specification herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the description and the drawings are to be regarded as illustrative in nature; the terminology of the present application does not include the use of the words "including", "having", "containing", "encompassing", "comprising", "having", "containing", "including", "containing", "including" and "having" and any change thereof in the specification and claims of the present application and the above drawing description, is intended to cover the non-exclusive inclusion.

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below; obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0029] Figure 1 Part of the internal schematic diagram of the water pan structure proposed by the present application;

[0030] Figure 2 The module block diagram of the water pan structure proposed by the present application;

[0031] Figure 3 The circuit schematic diagram of the detection module proposed by the present application;

[0032] Figure 4 Another part of the internal schematic diagram of the water pan structure proposed by the present application;

[0033] Figure 5 The circuit schematic diagram of another detection module proposed by the present application.

[0034] Reference signs:

[0035] 100, water pan body;

[0036] 200, heating structure;

[0037] 300, detection module;

[0038] 400, first electrical contactor;

[0039] 500, second electrical contactor;

[0040] 501, second electrical contactor A; 502, second electrical contactor B; 503, second electrical contactor C; 504, second electrical contactor D; 505, second electrical contactor E; 506, second electrical contactor F; 507, second electrical contactor G; 508, second electrical contactor H;

[0041] 600, master control unit. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer, the utility model will be described in further detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Therefore, a feature mentioned in the specification will be used to explain one feature of one embodiment of the utility model, and it is not implied that each embodiment of the utility model must have the explained feature. In addition, it should be noted that the specification describes many features. Although certain features can be combined together to show possible system designs, these features can also be used in other combinations that are not explicitly explained. Therefore, unless otherwise stated, the explained combination is not intended to be limited.

[0043] The principles and structures of the utility model will be described in detail below in combination with the drawings and embodiments.

[0044] Embodiment 1

[0045] Referring to the drawings Figures 1-2 The utility model provides a water pan structure, including water pan body 100, heating structure 200 and detection module 300 in water pan body 100,

[0046] The bottom in water pan body 100 is equipped with first electrical contactor 400, and the side wall in water pan body 100 is equipped with at least one second electrical contactor 500.

[0047] Detection module 300 is connected with first electrical contactor 400 and second electrical contactor 500 respectively, and detection module 300 is used for monitoring the resistance change generated between first electrical contactor 400 and second electrical contactor 500 with liquid level change, and determining the liquid level of water pan body 100 according to the resistance change.

[0048] It should be noted that the water pan structure of the embodiment further comprises a main control unit 600, and the main control unit 600 is electrically connected with the heating structure 200 and the detection module 300 respectively. The first electric contactor 400 and the second electric contactor 500 of the embodiment are both made of copper sheets.

[0049] The embodiment takes four second electric contactors 500 as an example, and the four second electric contactors 500 are counted from the bottom of the water pan body 100, which are the second electric contactor A 501, the second electric contactor B 502, the second electric contactor C 503 and the second electric contactor D 504.

[0050] In this way, when there is no condensate water in the water pan body 100 or the condensate water level in the water pan body 100 has not submerged the lowest second electric contactor 500, at this time, the first electric contactor 400 and the second electric contactor 500 are almost insulated, the resistance is very high, which causes the detection module 300 to be unable to form a closed loop through the electrical connection of the first electric contactor 400 and the second electric contactor 500, thereby causing the condensate water level in the water pan body 100 to be normal at this time, and the main control unit 600 does not need to start the heating structure 200.

[0051] When the condensate water level in the water pan body 100 at least submerges the lowest second electric contactor 500, at this time, the first electric contactor 400 and the second electric contactor 500 are conductors with condensate water, the resistance is significantly reduced, which causes the detection module 300 to be able to form a closed loop through the electrical connection of the first electric contactor 400 and the second electric contactor 500, at this time, the detection module 300 sends a start electric signal to the main control unit 600, so that the main control unit 600 starts the heating structure 200, thereby causing the condensate water in the water pan body 100 to evaporate quickly, preventing the risk of excessive water overflow in the water pan body 100, avoiding safety hazards to users, improving safety during use, and providing a safer, more reliable and comfortable use environment for users.

[0052] At this time, the volume of the water pan body 100 can be reduced, thereby improving the space utilization of the entire water pan structure.

[0053] The side wall of the water pan body 100 is provided with a plurality of second electric contactors 500 at different heights.

[0054] In this way, the water pan body 100 can detect the condensate water level according to the second electric contactors 500 at different heights, so that the water pan structure can set different heating powers of the heating structure 200 according to the height of the condensate water level in the water pan body 100.

[0055] And the heating structure 200 of the embodiment can be divided into four heating power levels from low to high according to the second electric contactor A501, the second electric contactor B502, the second electric contactor C503 and the second electric contactor D504. When the liquid level is low (the liquid level only submerges the second electric contactor A501), the heating power of the heating structure 200 is reduced to the lowest level, preventing the heating power from being too high and wasting energy; when the liquid level is high (the liquid level submerges the second electric contactor D504), the heating power of the heating structure 200 is increased to the highest level, preventing the heating power from being too low, the condensate water in the water pan body 100 evaporates too slowly, and the water pan body 100 has too much water and overflows.

[0056] To improve the detection accuracy of the detection module 300, improve the safety during use, and provide a safer, more reliable and comfortable use environment for the user, with reference to the accompanying drawings Figure 1 The distance between any two adjacent second electric contactors 500 in the side wall of the water pan body 100 is the same; in other words, the side wall of the water pan body 100 is uniformly provided with a plurality of second electric contactors 500.

[0057] The plurality of second electric contactors 500 are on the same vertical line.

[0058] To ensure that the detection module 300 can better detect the condensate water level in the water pan body 100, with reference to the accompanying drawings Figure 3 The detection module 300 includes a gating chip U1, a resistor R1, a resistor R2, a capacitor C1 and a capacitor C3.

[0059] The gating chip U1 is connected to at least two digital output terminals of the main control unit 600 and all the second electric contactors 500;

[0060] The first end of the resistor R1 is used to connect the PWM output terminal of the main control unit 600, the second end of the resistor R1 is connected to the first end of the resistor R2 and the first end of the capacitor C1 respectively, and the second end of the capacitor C1 is used to connect the first electric contactor 400.

[0061] The second end of the resistor R2 and the first end of the capacitor C3 are both used to connect the collection terminal of the main control unit 600; and the second end of the capacitor C3 is grounded.

[0062] It should be noted that the resistor R1 in the embodiment plays a current limiting role, and its resistance value determines the charging speed of the capacitor C1, which in turn affects the voltage value of the collection signal flowing to the collection terminal of the main control unit 600; the selection of the capacitance value of the capacitor C1 determines the voltage value of the collection signal and the charging and discharging time; the resistor R2 and the capacitor C3 form an RC filter, which is used to suppress interference signals above a certain frequency, so that the collection signal passing through is cleaner and the influence of high-frequency noise is reduced.

[0063] The model of the gate control chip U1 is any one of MC74HCT4051ADR2G, CD4051B, SN74CBT3251 and MAX306, so as to improve the detection accuracy of the detection module 300.

[0064] The gate control chip U1 is exemplified by the 16-pin analog multiplexer / de-multiplexer MC74HCT4051ADR2G. The pin 1, pin 2, pin 4, pin 5, pin 12, pin 13, pin 14 and pin 15 of the gate control chip U1 are respectively connected to the second electrical contactor 500.

[0065] Since the embodiment is exemplified by four second electrical contactors 500, only the pin 12, pin 13, pin 14 and pin 15 of the gate control chip U1 are respectively connected to one second electrical contactor 500, and the remaining pin 1, pin 2, pin 4 and pin 5 are not connected or suspended. The pin 9, pin 10 and pin 11 of the gate control chip U1 are respectively connected to the three digital output terminals A, B and C of the main control unit 600. The pin 15 of the gate control chip U1 is connected to +5V. The pin 3, pin 6, pin 7 and pin 8 of the gate control chip U1 are grounded.

[0066] In this way, when there is no condensate water in the water pan body 100 or the condensate water level in the water pan body 100 does not submerge the lowest second electrical contactor 500, the PWM signal output by the PWM output terminal of the main control unit 600 cannot charge the capacitor C1, and the SIGNAL signal collected by the collection terminal of the main control unit 600 has the same frequency and amplitude as the PWM signal output by the main control unit 600, indicating that the condensate water level in the water pan body 100 is normal, and the main control unit 600 does not need to start the heating structure 200.

[0067] When the condensate water level in the water pan body 100 at least submerges the lowest second electrical contactor 500, the condensate water becomes a conductor between the first electrical contactor 400 and the second electrical contactor 500, and the resistance is significantly reduced, so that the detection module 300 can form a closed loop through the electrical connection between the first electrical contactor 400 and the second electrical contactor 500. At this time, due to the conductivity of the condensate water, the PWM signal output by the PWM output terminal of the main control unit 600 charges the capacitor C1, and the frequency and amplitude of the SIGNAL signal collected by the collection terminal of the main control unit 600 are smaller than those of the PWM signal output by the main control unit 600, so that it is judged that the condensate water level in the water pan body 100 reaches the height of the corresponding second electrical contactor 500. The main control unit 600 can select A, B and C in turn, so as to judge the condensate water level in the water pan body 100 in real time.

[0068] Specifically, the main control unit 600 can determine to select a certain channel (X0-X3) by outputting corresponding high and low levels (high level is 1 and low level is 0) to the digital output terminals A, B and C. The following table is referred to:

[0069] A B C Gate pass 0 0 0 X0 0 0 1 X1 0 1 0 X2 0 1 1 X3

[0070] Among them, the selection channel X0 indicates that the liquid level reaches the second electric contactor A 501, the selection channel X1 indicates that the liquid level reaches the second electric contactor B 502, the selection channel X2 indicates that the liquid level reaches the second electric contactor C 503, and the selection channel X3 indicates that the liquid level reaches the second electric contactor D 504.

[0071] Among them, in order to ensure safety, a dry burning protection mechanism is added to the heating structure 200, and the calculation formula of the heating power P of the heating structure 200 is:

[0072]

[0073] Among them, P max is the maximum heating power of the heating structure 200, n is the nth second electric contactor 500 counted from the bottom of the water pan body 100, and N is the total number of the second electric contactors 500.

[0074] The process of adding a dry burning protection mechanism to the heating structure 200 is as follows:

[0075] The heating structure 200 is provided with a maximum continuous opening time t1 and a minimum interval opening time t2. When the cumulative heating time of the heating structure 200 is greater than or equal to t1 each time, the main control unit 600 closes the heating structure 200. If the condensate in the water pan body 100 does not immerse the second electric contactor 500 at this time, the interval time of the heating structure 200 needs to be greater than or equal to t2 at least to start the heating structure 200 again.

[0076] Embodiment 2

[0077] Based on embodiment 1, the circuit schematic diagram of the detection module 300 is referred to in the attached Figure 5 The detection module 300 proposed in this embodiment includes a selection chip U1, resistors R1, R2, capacitors C1, C2 and C3.

[0078] The detection module 300 proposed in this embodiment includes a selection chip U1, resistors R1, R2, capacitors C1, C2 and C3.

[0079] The selection chip U1 is connected with all the second electric contactors 500 and at least two digital output terminals of the main control unit 600, respectively.

[0080] The first end of the resistor R1 is used for connecting the PWM output end of the master control unit 600, the second end of the resistor R1 is connected with the first end of the resistor R2, the first end of the capacitor C1 and the first end of the capacitor C2 respectively, and the second end of the capacitor C1 is used for connecting the first electric contactor 400.

[0081] The second end of the resistor R2 and the first end of the capacitor C3 are both used for connecting the collection end of the master control unit 600, and the second end of the capacitor C2 and the second end of the capacitor C3 are both grounded.

[0082] It should be noted that the newly added capacitor C2 in the embodiment is a filter capacitor, and the capacitor C2 is used for smoothing the fluctuation of the power supply voltage or the signal line, removing high-frequency noise, and ensuring that the collection signal flowing to the collection end of the master control unit 600 is as pure and smooth as possible. The capacitance of the capacitor C2 should not be too large, otherwise it will cause the waveform of the collection signal to be distorted or the response time to be slow, affecting the sampling accuracy.

[0083] Wherein, referring to the accompanying drawings Figure 4 The second electric contactor 500 in the embodiment is illustrated by eight examples, which are the second electric contactor A 501, the second electric contactor B 502, the second electric contactor C 503, the second electric contactor D 504, the second electric contactor E 505, the second electric contactor F 506, the second electric contactor G 507 and the second electric contactor H 508.

[0084] Therefore, the pin 1, the pin 2, the pin 4, the pin 5, the pin 12, the pin 13, the pin 14 and the pin 15 of the gating chip U1 are respectively connected with a second electric contactor 500.

[0085] In this way, when there is no condensate water in the water pan body 100 or the condensate water level in the water pan body 100 has not submerged the lowest second electric contactor 500, the PWM signal output by the PWM output end of the master control unit 600 cannot charge the capacitor C1, and the SIGNAL signal collected by the collection end of the master control unit 600 has the same frequency and amplitude as the PWM signal output by the master control unit 600, indicating that the condensate water level in the water pan body 100 is normal at this time, and the master control unit 600 does not need to start the heating structure 200.

[0086] And when the condensate water level in the water pan body 100 at least submerges the lowest second electric contactor 500, at this time, the electric resistance between the first electric contactor 400 and the second electric contactor 500 is significantly reduced by the condensate water as a conductor, so that the detection module 300 can form a closed loop through the electrical connection of the first electric contactor 400 and the second electric contactor 500, that is, at this time, due to the conductivity of the condensate water, the PWM signal output by the PWM output end of the main control unit 600 charges the capacitor C1, and the frequency and amplitude of the SIGNAL signal collected by the collection end of the main control unit 600 are smaller than the frequency and amplitude of the PWM signal output by the main control unit 600, so that it is judged that the condensate water level in the water pan body 100 reaches the height of the corresponding second electric contactor 500; the main control unit 600 can sequentially select A, B and C, so as to judge the condensate water level in the water pan body 100 in real time.

[0087] Specifically, the main control unit 600 can determine the selection of a channel (X0-X3) by outputting corresponding high and low levels (high level is 1 and low level is 0) to the digital output end A, B and C, as shown in the following table:

[0088]

[0089]

[0090] Among them, the selection channel X0 indicates that the liquid level reaches the second electric contactor A 501, the selection channel X1 indicates that the liquid level reaches the second electric contactor B 502, the selection channel X2 indicates that the liquid level reaches the second electric contactor C 503, the selection channel X3 indicates that the liquid level reaches the second electric contactor D 504, the selection channel X4 indicates that the liquid level reaches the second electric contactor E 505, the selection channel X5 indicates that the liquid level reaches the second electric contactor F 506, the selection channel X6 indicates that the liquid level reaches the second electric contactor G 507, and the selection channel X7 indicates that the liquid level reaches the second electric contactor H 508.

[0091] Embodiment 3

[0092] The utility model discloses still propose a kind of refrigerator, the refrigerator includes above-mentioned water pan structure.

[0093] In this way, when there is no condensate water in the water pan body 100 or the condensate water level in the water pan body 100 has not submerged the lowest second electric contactor 500, then at this time, the first electric contactor 400 and the second electric contactor 500 are almost insulated, and the electric resistance is very high, so that the detection module 300 cannot form a closed loop through the electrical connection of the first electric contactor 400 and the second electric contactor 500, thereby causing the condensate water level in the water pan body 100 to be normal at this time, and the main control unit 600 does not need to start the heating structure 200.

[0094] When the condensate water level in the water pan body 100 at least submerges the lowest second electrical contactor 500, the electrical resistance between the first electrical contactor 400 and the second electrical contactor 500 decreases significantly with the condensate water as the conductor, so that the detection module 300 can form a closed loop through the electrical connection of the first electrical contactor 400 and the second electrical contactor 500, and the detection module 300 sends a start electrical signal to the main control unit 600 to start the heating structure 200, so that the condensate water in the water pan body 100 is quickly evaporated, preventing the water pan body 100 from overflowing and avoiding safety hazards to the user, improving the safety of the refrigerator during use, and providing a safer, more reliable and comfortable refrigerator use environment for the user.

[0095] The refrigerator further comprises a compressor.

[0096] The water pan structure is not arranged on the top of the compressor.

[0097] In this way, the water pan structure does not vibrate with the vibration generated when the compressor operates, thereby reducing the noise caused by the vibration of the water pan structure and improving the user experience.

[0098] Embodiment 4

[0099] The utility model also provides a refrigerator, the refrigerator includes above-mentioned water pan structure.

[0100] In this way, when there is no condensate water in the water pan body 100 or the condensate water level in the water pan body 100 has not submerged the lowest second electrical contactor 500, the first electrical contactor 400 and the second electrical contactor 500 are almost insulated, the electrical resistance is very high, so that the detection module 300 cannot form a closed loop through the electrical connection of the first electrical contactor 400 and the second electrical contactor 500, thereby ensuring that the condensate water level in the water pan body 100 is normal and the main control unit 600 does not need to start the heating structure 200.

[0101] When the condensate water level in the water pan body 100 at least submerges the lowest second electrical contactor 500, the electrical resistance between the first electrical contactor 400 and the second electrical contactor 500 decreases significantly with the condensate water as the conductor, so that the detection module 300 can form a closed loop through the electrical connection of the first electrical contactor 400 and the second electrical contactor 500, and send a start signal to the main control unit 600 to start the heating structure 200, so as to evaporate the condensate water in the water pan body 100 quickly, prevent the water pan body 100 from overflowing, avoid safety hazards to the user, improve the safety during use, and provide a safer, more reliable and comfortable refrigerator use environment for the user.

[0102] The refrigerator further comprises a compressor.

[0103] The water pan structure is arranged on the top of the compressor.

[0104] In this way, the refrigerator can evaporate the condensate water in the water pan body 100 by using the waste heat generated by the compressor, effectively utilize the heat that would otherwise be wasted by the compressor, and improve the energy efficiency.

[0105] Of course, if the waste heat generated by the compressor is not enough to evaporate the condensate water in the water pan body 100 quickly, so that the condensate water level in the water pan body 100 at least submerges the lowest second electrical contactor 500, the main control unit 600 can start the heating structure 200 to evaporate the condensate water in the water pan body 100 quickly, prevent the water pan body 100 from overflowing, avoid safety hazards to the user, improve the safety during use, and provide a safer, more reliable and comfortable use environment for the user.

[0106] Obviously, the above-described embodiments are only some of the embodiments of the present application, not all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or equivalently replace some of the technical features. Any equivalent structure made by using the contents of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A water pan structure, characterized by, The water pan structure comprises a water pan body (100), a heating structure (200) and a detection module (300) in the water pan body (100); A first electric contactor (400) is arranged at the bottom of the water pan body (100), and at least one second electric contactor (500) is arranged on the sidewall of the water pan body (100); The detection module (300) is connected to the first electric contactor (400) and the second electric contactor (500), respectively, and is used for monitoring the resistance change between the first electric contactor (400) and the second electric contactor (500) caused by the change of the liquid level, and determining the liquid level of the water pan body (100) according to the resistance change.

2. The water receptacle structure according to claim 1, wherein The sidewall of the water pan body (100) is provided with a plurality of second electric contactors (500) at different heights.

3. The water receptacle structure according to claim 1, wherein The distance between any two adjacent second electric contactors (500) on the sidewall of the water pan body (100) is the same.

4. The water receptacle structure according to any one of claims 1 to 3, wherein The plurality of second electric contactors (500) are on the same vertical line.

5. The water receptacle structure according to claim 1, wherein The detection module (300) comprises a gating chip U1, a resistor R1, a resistor R2, a capacitor C1 and a capacitor C3. The gating chip U1 is connected to all the second electric contactors (500) and at least two digital output terminals of a master control unit (600), respectively. The first end of the resistor R1 is used for connecting a PWM output terminal of the master control unit (600), the second end of the resistor R1 is connected to the first end of the resistor R2 and the first end of the capacitor C1, respectively, and the second end of the capacitor C1 is used for connecting the first electric contactor (400). The second end of the resistor R2 and the first end of the capacitor C3 are both used for connecting a collection terminal of the master control unit (600), and the second end of the capacitor C3 is grounded.

6. The water receptacle structure according to claim 5, wherein The detection module (300) further comprises a capacitor C2. The first end of the capacitor C2 is connected between the second end of the resistor R1 and the first end of the resistor R2, and the second end of the capacitor C2 is grounded.

7. The water receptacle structure according to claim 5, wherein The gating chip U1 is any one of MC74HCT4051ADR2G, CD4051B, SN74CBT3251 and MAX306.

8. The water receptacle structure of claim 1, wherein The calculation formula of the heating power P of the heating structure (200) is: wherein P max is the maximum heating power of the heating structure (200), n is the nth second electrical contact (500) counted from the bottom of the water tray body (100) upwards, and N is the total number of the second electrical contacts (500).

9. A refrigerator characterized by comprising: The refrigerator comprises the water pan structure according to any one of claims 1-8.

10. The refrigerator according to claim 9, characterized in that, The refrigerator further comprises a compressor. The water pan structure is not arranged on the top of the compressor.

Images