Method for judging whether kitchen garbage disposer has no barrel or not and whether kitchen garbage disposer is empty or not

Abstract

The invention discloses a method for judging whether a kitchen waste processor is empty or not, and the method comprises the steps: a control unit obtains the temperature and the relative humidity through the detection of a detection element disposed at a temperature and humidity detection point of the kitchen waste processor; the method comprises the following steps of: checking a table to obtain a corresponding saturated water vapor pressure ec0 at the temperature T0 and a corresponding saturated water vapor pressure ec1 at the temperature T1, calculating to obtain a reference relative humidity value Ub, and performing logical judgment and automatic control by a control unit according to the reference relative humidity value Ub and a comparison result of U1 and Ub, and the working program is automatically terminated when an empty barrel running state or a barrel-free running state is automatically judged.

Description

Technical Field

[0001] The present invention relates to the technical field of drying control systems for food waste disposers, and in particular to a method for determining whether a food waste disposer has an empty barrel or not. Background Art

[0002] The food waste disposer is used to heat and ferment food waste and turn it into fertilizer (two ways: one is direct heating and drying to inorganicize or harmlessly treat organic food waste; the other is fermentation to turn it into fertilizer). Once the food waste disposer starts working, the continuous working time often ranges from a few hours to more than ten hours, or even more than 20 hours. Moreover, the food waste disposer is a type of product that is used unattended. If the user forgets to put the inner barrel back, or the food waste disposer is turned on with an empty barrel, the machine may not shut down until the entire program is completed. Once this happens, it will not only waste energy, but also damage the machine itself, and even cause other risks.

[0003] To avoid the above problems, the usual practice is to add a barrel detection switch to the machine. The switch state of the barrel detection switch is used to determine whether the inner barrel is in place. If the inner barrel is not in place, the working program cannot be started. However, the empty barrel situation cannot be solved by the barrel detection switch or other detection switches. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a method for determining whether a food waste disposer is in an empty barrel or no barrel state through an algorithm, which automatically determines whether the food waste disposer is in an empty barrel operating state or a no barrel operating state and automatically controls it at the initial stage of the working program.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: a method for determining whether a food waste disposer has an empty bucket or not, comprising the following steps:

[0006] The storage unit stores a "Saturated Water Vapor Pressure and Temperature Comparison Table", which stores the pressure values ​​of saturated water vapor corresponding to different temperatures under a standard atmospheric pressure condition.

[0007] The control unit detects the temperature and relative humidity through the detection elements set at the temperature and humidity detection points of the food waste disposer.

[0008] The start recording step is to start the working program of any working mode in the control unit, heat the inner barrel through the heating plate, and the control unit obtains and records the temperature T0 and relative humidity U0 at the starting point of the start work.

[0009] In the initial detection step, at the initial set time when the working program is started, the control unit again records the current temperature T1 and relative humidity U1 detected by the detection element.

[0010] Calculate the reference relative humidity value U b Step 1: The control unit obtains the saturated water vapor pressure e corresponding to the temperature T0 by looking up the "Saturated Water Vapor Pressure Temperature Comparison Table". c0 And the corresponding saturated water vapor pressure e at temperature T1 c1 ,

[0011] The control unit calculates the reference relative humidity value U according to the humidity value calculation formula b ,

[0012] The humidity value calculation formula is:

[0013] U b =e c0 / e c1 *U0+a, a is 1-10%,

[0014] Automatic judgment steps, the control unit according to U1 and U b The comparison results are used for logical judgment and automatic control.

[0015] If U1<=U b The control unit determines that the food waste disposer is in an empty barrel operation state or a barrel-free operation state, and the control unit immediately interrupts or terminates the running working program.

[0016] If U1>U b The control unit determines that the food waste disposer is in a normal load working state and the working procedure continues.

[0017] The load working state is that the food waste disposer is equipped with an inner barrel, the inner barrel contains contents, and water vapor is released from the contents. The food waste disposer discharges water vapor and / or airflow through a manifold or an air duct. The temperature and humidity detection points are arranged in the manifold or the air duct to detect the discharged water vapor and / or airflow. The temperature and relative humidity of the temperature and humidity detection points are obtained by detecting the detection elements arranged at the same temperature and humidity detection points at the same time.

[0018] The initial detection step starts timing from the start of the working procedure, and at the end of a short-time timing, the control unit again records the current temperature T1 and the relative humidity U1 detected by the detection element, and the length of the short-time timing is less than 1 hour.

[0019] The short-time timing is no longer than 30 minutes. When the working program runs to the 1st to 30th minute, the control unit again records the current temperature T1 and relative humidity U1 detected by the detection element, and calculates the relative humidity according to U1 and U b The comparison results are used for logical judgment and automatic control.

[0020] The short-time timing has a duration of 10-15 minutes, that is, when the working program runs to the 10th-15th minute, the control unit again records the current temperature T1 and the relative humidity U1 detected by the detection element, and sets the relative humidity U1 according to U1 and U2. b The comparison results are used for logical judgment and automatic control.

[0021] The a is 3-8%.

[0022] In the automatic judgment step, if U1<=U b , the control unit immediately terminates the working program, and then controls the heating plate arranged in the food waste disposer to immediately stop heating, and then shuts down after a short cooling time of a set time, and the control unit simultaneously displays a corresponding error message and / or an audible and visual alarm;

[0023] The kitchen waste disposer is provided with a manifold or an air duct which is directly or indirectly connected to the inner barrel space of the inner barrel, and the temperature and humidity detection points are arranged in the manifold or the air duct.

[0024] The detection element is installed at the temperature and humidity detection point, and the detection element includes a thermometer and a hygrometer installed on the PCB board. The control unit detects the temperature value and relative humidity value of the same position at the same time through the thermometer and hygrometer integrated in the PCB board.

[0025] The body of the food waste disposer is provided with a processing chamber for placing the inner barrel and a lid for covering the upper opening of the processing chamber. The body or the lid is provided with the collecting chamber for collecting and discharging airflow, and the PCB board is arranged in the collecting chamber.

[0026] Compared with the prior art, the present invention has the following advantages: the control unit detects the temperature and relative humidity through the detection element arranged at the temperature and humidity detection point of the food waste disposer, and at a certain time point in the early stage of the operation program, the saturated water vapor pressure e corresponding to the temperature T0 is obtained by looking up the table. c0 And the corresponding saturated water vapor pressure e at temperature T1 c1 , and then calculate the reference relative humidity value U b The control unit is based on the reference relative humidity value U b , the control unit according to U1 and U bThe comparison result is used for logical judgment and automatic control, and the working procedure is automatically terminated when it is automatically judged to be in the empty barrel operation state or the no barrel operation state.

[0027] 1. According to the algorithm of the present invention, the control unit can automatically determine whether the food waste disposer is in a working state with no barrel or empty barrel through a program, and can shut down the machine at the beginning of the program operation to avoid energy waste, machine damage or even other risks.

[0028] 2. The present invention only needs to add an empty barrel or no barrel judgment program in the control unit to realize automatic identification of whether the food waste disposer is in an empty barrel operating state or a no barrel operating state, and automatically ends the program when it is in the empty barrel operating state or the no barrel operating state, without adding any physical mechanism or parts, and does not increase costs.

[0029] 3. The judgment criteria of this method are dynamic and only related to the water vapor content in the air. The judgment results are accurate and consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a flow chart of the present invention.

[0031] Figures 2 to 4 This is the "Saturated Water Vapor Pressure Temperature Comparison Table" of the present invention. DETAILED DESCRIPTION

[0032] A method for determining whether a food waste disposer has an empty bucket or not comprises the following steps:

[0033] The storage unit stores a "Saturated Water Vapor Pressure and Temperature Comparison Table", which stores the pressure values ​​of saturated water vapor corresponding to different temperatures under a standard atmospheric pressure condition.

[0034] The start recording step is to start the working program of any working mode in the control unit, heat the inner barrel by the heating plate, and the control unit records (stores) the temperature T0 and relative humidity U0 of the starting point of the start work detected by the detection element.

[0035] In the initial detection step, at the initial set time when the working program is started, the control unit again obtains and records the current temperature T1 and relative humidity U1, where:

[0036] The setting time at the beginning of the working program startup refers to the timing starting from the start of the working program, and at the end of a short-time timing, the control unit again records the current temperature T1 and relative humidity U1 detected by the detection element. The time length of the short-time timing is less than 1 hour, and the optional time length of the short-time timing includes 3 minutes, 5 minutes, 10 minutes or 15 minutes;

[0037] Calculate the reference relative humidity value U b Step 1: The control unit obtains the saturated water vapor pressure e corresponding to the temperature T0 by looking up the "Saturated Water Vapor Pressure Temperature Comparison Table". c0 And the corresponding saturated water vapor pressure e at temperature T1 c1 ,

[0038] According to the humidity calculation formula, the reference relative humidity value U is calculated. b ,

[0039] The humidity value calculation formula is U b =e c0 / e c1 *U0+a,

[0040] Wherein, a is 1-10%, and in a preferred embodiment, a is set to 3-8%.

[0041] Automatic judgment steps, the control unit according to U1 and U b The comparison results are used for logical judgment and automatic control.

[0042] If U1<=U b , the control unit determines that the food waste disposer is in an empty barrel operation state or a no barrel operation state, and the control unit immediately interrupts or terminates the running working program;

[0043] If U1>U b The control unit determines that the food waste disposer is in a normal load working state and the working procedure continues.

[0044] The load working state is that the food waste disposer has an inner barrel built in, the inner barrel has contents, and water vapor is released from the contents.

[0045] In a feasible implementation manner, in the automatic determination step, if U1<=U b , the control unit immediately terminates the working program, and then controls the heating plate set in the food waste disposer to stop heating immediately, and then shuts down after a short cooling time of the set time. The control unit also displays the corresponding error message. The food waste disposer can also output sound and light alarms or send error information to the user's mobile phone through wireless communication.

[0046] In a feasible implementation manner, the short-time timing duration is no longer than 30 minutes. When the working program runs to the 1st to 30th minute, the control unit again records the current temperature T1 and relative humidity U1 detected by the detection element, and calculates the relative humidity U1 according to U1 and U2. b The comparison results are used for logical judgment and automatic control.

[0047] In a feasible implementation manner, the short-time timing time length is 10-15 minutes, that is, when the working program runs to the 10th-15th minute, the control unit again records the current temperature T1 and relative humidity U1 detected by the detection element, and according to U1 and U b The comparison results are used for logical judgment and automatic control.

[0048] In a feasible implementation, the food waste disposer is provided with a manifold or air duct directly or indirectly connected to the inner space of the inner barrel, and the temperature and humidity detection point is provided in the manifold or air duct. A detection element is installed at the temperature and humidity detection point, and the detection element includes a thermometer and a hygrometer installed on a PCB board. The control unit detects the temperature value and relative humidity value of the same position at the same time through the thermometer and hygrometer integrated on the PCB board.

[0049] In a feasible implementation manner, a processing chamber for placing an inner barrel and a cover for covering the top of the processing chamber are provided on the body of the food waste disposer, and the body or the cover is provided with a collecting chamber for collecting and discharging airflow, and a PCB board is arranged in the collecting chamber.

[0050] The present invention calculates a dynamic reference humidity value corresponding to the temperature at a certain time point in the early stage of program operation of the machine according to different environmental temperatures and humidities, and then determines whether the program is being run in an empty barrel or no barrel state by comparing the relative humidity measurement value at that time with the reference value, thereby preventing the machine from running in this state for a long time.

[0051] When the atmospheric pressure remains basically unchanged, the relative humidity at a certain temperature is the ratio of absolute humidity to saturated humidity. As the temperature rises, the evaporation activity of water molecules intensifies, and the maximum water vapor content in the air, or the saturated water vapor partial pressure, that is, the saturated humidity value will increase. Therefore, under the same water vapor content or water vapor partial pressure, the relative humidity will decrease as the temperature rises.

[0052] When the program is run with an empty barrel or without a barrel, the water vapor content in the exhaust gas is the same as the water vapor content in the ambient air. A specific algorithm is used to convert the relative humidity corresponding to the ambient temperature into the relative humidity corresponding to the working temperature, that is, the reference relative humidity, and then compare it with the real-time measured relative humidity to determine whether the program is run with an empty barrel or without a barrel. If it is determined to be an empty barrel or without a barrel, the program will automatically end to avoid long-term operation.

[0053] 1. According to the algorithm of the present invention, the control unit can automatically determine whether the food waste disposer is in a working state of no bucket or empty bucket through the program, and can stop the machine at the beginning of the program operation to avoid energy waste, machine damage, and even other risks;

[0054] 2. The present invention only needs to add an empty barrel or no barrel judgment program in the control unit to automatically identify whether the food waste disposer is in an empty barrel operation state or a no barrel operation state, and automatically terminate the program when the empty barrel operation state or the no barrel operation state is reached, without adding any physical mechanism or parts, and without increasing the cost;

[0055] 3. The judgment criteria of this method are dynamic and only related to the water vapor content in the air. It has nothing to do with the working mode, the set working temperature, and the amount of content in the barrel after drying, etc. The judgment results are accurate and consistent.

Claims

1. A method for determining whether a food waste disposer has an empty bucket or not, characterized in that: The following steps are included: The storage unit stores a "Saturated Water Vapor Pressure and Temperature Comparison Table", which stores the pressure values ​​of saturated water vapor corresponding to different temperatures under a standard atmospheric pressure condition. The control unit detects the temperature and relative humidity through the detection elements set at the temperature and humidity detection points of the food waste disposer. The start recording step is to start the working program of any working mode in the control unit, heat the inner barrel through the heating plate, and the control unit obtains and records the temperature T0 and relative humidity U0 at the starting point of the start work. In the initial detection step, at the initial set time when the working program is started, the control unit again obtains and records the current temperature T1 and relative humidity U1. Calculate the reference relative humidity value U b Step 1: The control unit obtains the saturated water vapor pressure e corresponding to the temperature T0 by looking up the "Saturated Water Vapor Pressure Temperature Comparison Table". c0 And the corresponding saturated water vapor pressure e at temperature T1 c1 , The control unit calculates the reference relative humidity value U according to the humidity value calculation formula b , The humidity value calculation formula is: U b = e c0 / e c1 * U0 + a, where a is 1 - 10%, Automatic judgment steps, the control unit according to U1 and U b The comparison results are used for logical judgment and automatic control. If U1<=U b The control unit determines that the food waste disposer is in an empty barrel operation state or a barrel-free operation state, and the control unit immediately interrupts or terminates the running working program. If U1>U b The control unit determines that the food waste disposer is in a normal load working state and the working procedure continues.

2. The method for determining whether a food waste disposer has an empty bucket or not according to claim 1, characterized in that: The load working state is that the food waste disposer is equipped with an inner barrel, the inner barrel contains contents, and water vapor is released from the contents. The food waste disposer discharges water vapor and / or airflow through a manifold or an air duct. The temperature and humidity detection points are arranged in the manifold or the air duct to detect the discharged water vapor and / or airflow. The temperature and relative humidity of the temperature and humidity detection points are obtained by detecting the detection elements arranged at the same temperature and humidity detection points at the same time.

3. The method for determining whether a food waste disposer has an empty bucket or not according to claim 1, characterized in that: The initial detection step starts timing from the start of the working procedure, and at the end of a short-time timing, the control unit again records the current temperature T1 and the relative humidity U1 detected by the detection element, and the length of the short-time timing is less than 1 hour.

4. The method for determining whether a food waste disposer has an empty bucket or not according to claim 1, characterized in that: The short-time timing is no longer than 30 minutes. When the working program runs to the 1st to 30th minute, the control unit again records the current temperature T1 and relative humidity U1 detected by the detection element, and calculates the relative humidity according to U1 and U b The comparison results are used for logical judgment and automatic control.

5. The method for determining whether a food waste disposer has an empty bucket or not according to claim 1, characterized in that: The short-time timing has a duration of 10-15 minutes, that is, when the working program runs to the 10th-15th minute, the control unit again records the current temperature T1 and the relative humidity U1 detected by the detection element, and sets the relative humidity U1 according to U1 and U2. b The comparison results are used for logical judgment and automatic control.

6. The method for determining whether a food waste disposer has an empty bucket or not according to claim 1, characterized in that: The a is 3-8%.

7. The method for determining whether a food waste disposer has an empty bucket or not according to claim 1, characterized in that: In the automatic judgment step, if U1<=U b , the control unit immediately terminates the working program, and then controls the heating plate arranged in the food waste disposer to immediately stop heating, and then shuts down after a short cooling time of the set time. The control unit also displays the corresponding error message and / or sound and light alarm.

8. A method for determining whether a food waste disposer has an empty bucket or not according to any one of claims 1 to 7, characterized in that: The kitchen waste disposer is provided with a manifold or an air duct which is directly or indirectly connected to the inner barrel space of the inner barrel, and the temperature and humidity detection points are arranged in the manifold or the air duct.

9. The method for determining whether a food waste disposer has an empty bucket or not according to claim 8, characterized in that: The detection element is installed at the temperature and humidity detection point, and the detection element includes a thermometer and a hygrometer installed on the PCB board. The control unit detects the temperature value and relative humidity value of the same position at the same time through the thermometer and hygrometer integrated in the PCB board.

10. The method for determining whether a food waste disposer has an empty bucket or not according to claim 9, characterized in that: The body of the food waste disposer is provided with a processing chamber for placing the inner barrel and a cover for covering the top of the processing chamber, the body or the cover is provided with the collecting chamber for collecting and discharging airflow, and the PCB board is arranged in the collecting chamber.

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