CN107228993B - Energy efficiency testing method and device for pressure cooking appliance - Google Patents
Energy efficiency testing method and device for pressure cooking appliance Download PDFInfo
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- CN107228993B CN107228993B CN201610179523.6A CN201610179523A CN107228993B CN 107228993 B CN107228993 B CN 107228993B CN 201610179523 A CN201610179523 A CN 201610179523A CN 107228993 B CN107228993 B CN 107228993B
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Abstract
The invention discloses an energy efficiency testing method and device of a pressure cooking appliance, wherein the method comprises the following steps: acquiring an initial water temperature in the pressure cooking appliance, and calculating reference power consumption of the pressure cooking appliance according to the initial water temperature; controlling the pressure cooking appliance to work so as to heat water with a preset volume in the pressure cooking appliance, so that the pressure cooking appliance enters a temperature rise and pressure rise stage and a pressure maintaining stage in sequence; acquiring the accumulated heating time of the pressure cooking appliance under a preset condition, and acquiring the power consumption of the pressure cooking appliance when the accumulated heating time reaches the preset time; and calculating the energy efficiency index of the pressure cooking utensil according to the power consumption of the pressure cooking utensil and the reference power consumption of the pressure cooking utensil. From this, the testing process includes intensification pressure-rising stage and pressurize stage to energy consumption test result is more reasonable, more is close actual energy efficiency level, and only needs to measure initial temperature, thereby need not reequip pressure cooking utensil, and it is more simple and convenient to operate, and the measuring accuracy is higher.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to an energy efficiency testing method and device for a pressure cooking appliance.
Background
The existing industry standard QB/T4268-2011 'limit value and grade of energy efficiency of an electric pressure cooker' stipulates a test method of a pressure cooking appliance, but the test process of the test method only comprises a temperature rise and pressure rise stage, and a high-pressure maintenance stage is omitted, so that the test result cannot accurately reflect the actual energy efficiency level. In addition, the test method needs to detect the water temperature in the test sample machine in real time, so that the test sample machine needs to be modified, namely a pot cover of the test sample machine is provided with a through hole so as to arrange a temperature detecting instrument in the pot body, so that the test process is complex to operate and difficult; and the steam leakage of the test sample machine is easily caused, or the measurement data has larger deviation due to the water flow in the pot and the deviation of the position of the temperature sensing point, and finally the precision of the test result is low.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide an energy efficiency testing method of a pressure cooking appliance, wherein the energy efficiency testing result is closer to the actual energy efficiency level.
Another object of the present invention is to provide an energy efficiency testing apparatus for a pressure cooking appliance.
In order to achieve the above object, an embodiment of the present invention provides a method for testing energy efficiency of a pressure cooking appliance, including the following steps: acquiring an initial water temperature in the pressure cooking appliance, and calculating reference power consumption of the pressure cooking appliance according to the initial water temperature; controlling the pressure cooking appliance to work so as to heat a preset volume of water in the pressure cooking appliance, so that the pressure cooking appliance enters a temperature rise and pressure rise stage and a pressure maintaining stage in sequence; acquiring the accumulated heating time of the pressure cooking appliance under a preset condition, and acquiring the power consumption of the pressure cooking appliance when the accumulated heating time reaches the preset time; calculating an energy efficiency index of the pressure cooking appliance according to the power consumption of the pressure cooking appliance and the reference power consumption of the pressure cooking appliance.
According to the energy efficiency testing method of the pressure cooking appliance provided by the embodiment of the invention, the initial water temperature in the pressure cooking appliance is firstly obtained, the reference power consumption of the pressure cooking appliance is calculated according to the initial water temperature, then the pressure cooking appliance is controlled to work to heat the water with the preset volume so that the pressure cooking appliance enters a temperature rise and pressure rise stage and a pressure maintaining stage in sequence, the accumulated heating time of the pressure cooking appliance under the preset condition is obtained, the power consumption of the pressure cooking appliance is obtained when the accumulated heating time reaches the preset time, and finally the energy efficiency index is calculated according to the power consumption of the pressure cooking appliance and the reference power consumption. Therefore, the testing process of the testing method comprises a temperature rise and pressure rise stage and a pressure maintaining stage, namely a high pressure maintaining stage, so that the energy consumption testing result is more reasonable and closer to the actual energy efficiency level, the initial water temperature is only required to be measured in the testing process, the temperature in the appliance does not need to be detected in real time, the pressure cooking appliance does not need to be modified, the operation is simpler and more convenient, and the testing precision is higher.
According to one embodiment of the invention, acquiring the accumulated heating time of the pressure cooking appliance under the preset condition comprises the following steps: detecting a pressure within the pressure cooking appliance; and starting timing when the pressure in the pressure cooking appliance rises to a preset pressure, and controlling and stopping timing when the pressure in the pressure cooking appliance falls to the preset pressure so as to obtain the accumulated heating time of the pressure cooking appliance under a preset condition according to the timing time.
According to one embodiment of the invention, the preset volume is (35% -45%) times the rated volume of the pressure cooking appliance.
According to one embodiment of the invention, the preset pressure is 70% -80% times of the rated cooking pressure of the pressure cooking appliance, and the preset time is 13-17 minutes.
According to an embodiment of the present invention, the reference power consumption E of the pressure cooking appliance may be calculated according to the following formulabase：
Ebase＝(C×G×(T-T0)×M+G×N)×λ/a
Wherein C is the specific heat of water, G is the mass of the water of the preset volume, T0The initial water temperature, T is the water saturated steam temperature corresponding to the rated cooking pressure, lambda is the heating mode revision coefficient, M is the pressure revision coefficient corresponding to the rated cooking pressure, and N is the unit energy consumption of the pressure maintaining stage corresponding to the rated cooking pressure.
In order to achieve the above object, according to another aspect of the present invention, there is provided an energy efficiency testing apparatus for a pressure cooking appliance, including: the first acquisition module is used for acquiring the initial water temperature in the pressure cooking appliance and calculating the reference power consumption of the pressure cooking appliance according to the initial water temperature; the testing module is used for controlling the pressure cooking appliance to work so as to heat water with a preset volume in the pressure cooking appliance, so that the pressure cooking appliance enters a temperature rise and pressure rise stage and a pressure maintaining stage in sequence, the accumulated heating time of the pressure cooking appliance under a preset condition is obtained, and the power consumption of the pressure cooking appliance is obtained when the accumulated heating time reaches the preset time; and the energy efficiency calculation module is used for calculating the energy efficiency index of the pressure cooking appliance according to the power consumption of the pressure cooking appliance and the reference power consumption of the pressure cooking appliance.
According to the energy efficiency testing device of the pressure cooking appliance provided by the embodiment of the invention, the initial water temperature in the pressure cooking appliance is obtained through the first obtaining module, the reference power consumption of the pressure cooking appliance is calculated according to the initial water temperature, then the testing module controls the pressure cooking appliance to work so as to heat water with a preset volume, so that the pressure cooking appliance sequentially enters a temperature rise and pressure rise stage and a pressure maintaining stage, the accumulated heating time of the pressure cooking appliance under the preset condition is obtained, the power consumption of the pressure cooking appliance is obtained when the accumulated heating time reaches the preset time, and finally the energy efficiency index is calculated through the energy efficiency calculating module according to the power consumption of the pressure cooking appliance and the reference power consumption. From this, this testing arrangement's test procedure is including rising temperature and pressing stage and pressurize stage promptly high pressure maintenance stage to energy consumption test result is more reasonable, more is close actual energy efficiency level, and the test procedure only needs to measure initial temperature, need not real-time detection utensil internal temperature, thus need not reequip pressure cooking utensil, and it is more simple and convenient to operate, and the measuring accuracy is higher.
According to one embodiment of the invention, the test module is further configured to: the method comprises the steps of detecting the pressure in the pressure cooking appliance, starting timing when the pressure in the pressure cooking appliance rises to a preset pressure, and controlling and stopping timing when the pressure in the pressure cooking appliance falls to the preset pressure so as to obtain the accumulated heating time of the pressure cooking appliance under a preset condition according to the timing time.
According to one embodiment of the invention, the preset volume is (35% -45%) times the rated volume of the pressure cooking appliance.
According to one embodiment of the invention, the preset pressure is 70% -80% times of the rated cooking pressure of the pressure cooking appliance, and the preset time is 13-17 minutes.
According to one embodiment of the invention, the first acquisition module calculates the reference power consumption E of the pressure cooking appliance according to the following formulabase：
Ebase＝(C×G×(T-T0)×M+G×N)×λ/a
Wherein C is the specific heat of water, G is the mass of the water of the preset volume, T0The initial water temperature, T is the water saturated steam temperature corresponding to the rated cooking pressure, lambda is the heating mode revision coefficient, M is the pressure revision coefficient corresponding to the rated cooking pressure, and N is the unit energy consumption of the pressure maintaining stage corresponding to the rated cooking pressure.
Drawings
Fig. 1 is a flowchart of an energy efficiency testing method of a pressure cooking appliance according to an embodiment of the present invention;
fig. 2 is a schematic view of an operating principle of a pressure cooking appliance according to an embodiment of the present invention;
fig. 3 is a flowchart of an energy efficiency testing method of a pressure cooking appliance according to an embodiment of the present invention; and
fig. 4 is a block diagram schematically illustrating an energy efficiency testing apparatus of a pressure cooking appliance according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes a method for testing energy efficiency of a pressure cooking appliance and an apparatus for testing energy efficiency of a pressure cooking appliance according to an embodiment of the present invention with reference to the accompanying drawings.
Fig. 1 is a flowchart of an energy efficiency testing method of a pressure cooking appliance according to an embodiment of the present invention. As shown in fig. 1, the method comprises the steps of:
s1: the initial water temperature in the pressure cooking utensil is obtained, and the reference power consumption of the pressure cooking utensil is calculated according to the initial water temperature.
Wherein, before carrying out the energy efficiency test, the accessible is weighed and is added predetermined volumetric water in the normal pressure cooking utensil, and after pressure cooking utensil was added predetermined volumetric water, the temperature measurement ware such as accessible thermometer measured the temperature in the pressure cooking utensil, and the temperature that this moment measured is the initial temperature in the pressure cooking utensil promptly.
Specifically, according to an embodiment of the present invention, the reference power consumption E of the pressure cooking appliance can be calculated according to the following formulabase：
Ebase＝(C×G×(T-T0)×M+G×N)×λ/a
Wherein C is specific heat of water, i.e., 1.16, and the unit is watt hour per kilogram water intake [ W.h/(kg. ℃ C.)]G is the mass of water in kilograms (kg) of a predetermined volume, T0The initial water temperature is expressed in units of time degree (DEG C), T is the water saturated steam temperature corresponding to the rated cooking pressure, the unit is the time degree (DEG C), lambda is the heating mode revision coefficient, M is the pressure revision coefficient corresponding to the rated cooking pressure, N is the unit energy consumption of the pressure maintaining stage corresponding to the rated cooking pressure, the unit is watt hour per kilogram (W.h/kg), and a is a constant, for example, 0.75.
It should be noted that λ may be set according to a heating manner of the pressure cooking appliance, for example, when the pressure cooking appliance is heated by an electromagnetic induction method, λ is 1.1, and when the pressure cooking appliance is heated by another method, λ is 1.0. In addition, the saturated steam temperature T, the pressure correction coefficient M, and the unit energy consumption N in the pressure maintaining stage corresponding to the rated cooking pressure can be obtained according to the following table 1, that is, after the rated cooking pressure of the pressure cooking appliance is determined, the saturated steam temperature T, the pressure correction coefficient M, and the unit energy consumption N in the pressure maintaining stage corresponding to the rated cooking pressure can be obtained by querying the following table 1.
TABLE 1
As can be seen from table 1 above, when the rated cooking pressure of the pressure cooking appliance is determined to be 100kPa, the saturated steam temperature T corresponding to the rated cooking pressure is 120.24 ℃, the pressure correction coefficient M is 1.22, and the unit energy consumption N in the pressure holding stage is 40.80.
Thus, the initial water temperature T is obtained0Then, the formula E can be obtainedbase＝(C×G×(T-T0)×M + G × N) × λ/a calculates a reference power consumption of the pressure cooking appliance.
S2: and controlling the pressure cooking appliance to work so as to heat a preset volume of water in the pressure cooking appliance, so that the pressure cooking appliance enters a temperature rise and pressure rise stage and a pressure maintaining stage in sequence.
The working principle schematic diagram of the pressure cooking appliance is shown in fig. 2, the working state of the pressure cooking appliance comprises a temperature rise and pressure rise stage, a pressure maintaining stage and a pressure reduction stage, and in the temperature rise and pressure rise stage, the pressure in the pressure cooking appliance gradually rises from the atmospheric pressure of the current environment until the pressure reaches a preset pressure; when the pressure in the pressure cooking appliance reaches the preset pressure, the pressure cooking appliance enters a pressure maintaining stage, namely a high-pressure maintaining stage, and the pressure in the pressure cooking appliance fluctuates within a preset pressure range in the pressure maintaining stage; after entering the pressure maintaining stage for a preset time, the pressure cooking appliance enters a pressure reducing stage, and in the pressure reducing stage, the pressure in the pressure cooking appliance is gradually reduced.
S3: the method comprises the steps of obtaining the accumulated heating time of the pressure cooking appliance under the preset condition, and obtaining the power consumption of the pressure cooking appliance when the accumulated heating time reaches the preset time.
According to one embodiment of the invention, acquiring the accumulated heating time of the pressure cooking appliance under the preset condition comprises the following steps: detecting a pressure within the pressure cooking appliance; and starting timing when the pressure in the pressure cooking appliance rises to a preset pressure, and controlling and stopping timing when the pressure in the pressure cooking appliance drops to the preset pressure so as to obtain the accumulated heating time of the pressure cooking appliance under the preset condition according to the timing time.
Specifically, before the pressure cooking appliance is controlled to work, the pressure cooking appliance can be connected with a power supply through a power meter, a pressure gauge with an appropriate range can be installed on a pot cover of the pressure cooking appliance to be tested through a special connector, for example, a pressure valve, so as to detect the pressure in the pressure cooking appliance, and then an operating gear, for example, an operating gear with the maximum pressure and the longest operating time, is selected.
After the pressure gauge is installed and the working gear is selected, the pressure cooking appliance is started under the rated voltage condition, the pressure cooking appliance works according to the selected working gear, the temperature rise and pressure rise stage and the pressure maintaining stage are sequentially started, and the power consumption of the pressure cooking appliance is recorded through the power meter. In the operation process, as shown in fig. 2, in the pressure rising process, when the pressure of the pressure cooking appliance reaches the preset pressure, the timing can be started, for example, by using a stopwatch, in the pressure falling process, when the pressure of the pressure cooking appliance is lower than the preset pressure, the timing is stopped, for example, the stopwatch can be controlled to pause the timing, and the above process is repeated until the accumulated timing time, for example, the timing time of the stopwatch, reaches the preset time, and when the accumulated timing time reaches the preset time, the energy efficiency test is finished, and the power consumption of the pressure cooking appliance in the whole energy efficiency test process recorded by the power meter is obtained.
S4: and calculating the energy efficiency index of the pressure cooking utensil according to the power consumption of the pressure cooking utensil and the reference power consumption of the pressure cooking utensil.
That is, after acquiring the reference power consumption amount of the pressure cooking appliance and the power consumption amount of the pressure cooking appliance during the energy efficiency test, the energy efficiency index of the pressure cooking appliance may be calculated according to the following formula:
η＝(Etest/Ebase)×100％
wherein η is the energy efficiency index of the pressure cooking appliance, EtestFor the power consumption of the pressure cooker during the energy efficiency test, EbaseIs the reference power consumption of the pressure cooking appliance.
According to an embodiment of the present invention, the preset volume may be 35% to 45% times of the rated volume of the pressure cooking appliance, preferably 40% of the rated volume.
According to an embodiment of the present invention, the preset pressure is 70% -80% times of the rated cooking pressure of the pressure cooking appliance, preferably 75% of the rated cooking pressure, and the preset time is 13-17 minutes, preferably 15 minutes.
In addition, the reference power consumption amount of the pressure cooking appliance is not limited to be calculated immediately after the initial water temperature is acquired, and the reference power consumption amount of the pressure cooking appliance may be calculated before the energy efficiency index of the pressure cooking appliance is calculated.
As described above, as shown in fig. 3, the energy efficiency testing method for the pressure cooking appliance according to the embodiment of the present invention specifically includes the following steps:
s101: a preset volume of water, for example 40% of the nominal volume, is added to the pressure cooking appliance and the initial water temperature in the pressure cooking appliance is obtained.
S102: and controlling the pressure cooking appliance to start working at the working gear with the maximum pressure and the longest working time, and starting to measure the power consumption of the pressure cooking appliance.
S103: the timing is started when the pressure in the pressure cooking appliance rises to a preset pressure, for example, 75% of the rated cooking pressure, and the timing is stopped when the pressure in the pressure cooking appliance falls to the preset pressure.
S104: and when the timing time reaches the preset time, for example, 15 minutes, namely the time when the pressure in the pressure cooking appliance is maintained above the preset pressure is the preset time, the energy efficiency test is finished, and the power consumption of the pressure cooking appliance in the whole energy efficiency test process is obtained.
S105: according to formula Ebase＝(C×G×(T-T0) × M + G × N) × lambda/a to calculate the reference power consumption of the pressure cooking appliance.
S106 according to formula η ═ (E)test/Ebase) × 100 the energy efficiency index of the pressure cooking appliance is calculated at 100%.
In summary, according to the energy efficiency testing method for the pressure cooking appliance provided by the embodiment of the invention, the initial water temperature in the pressure cooking appliance is obtained, the reference power consumption of the pressure cooking appliance is calculated according to the initial water temperature, then the pressure cooking appliance is controlled to work to heat the water with the preset volume so that the pressure cooking appliance enters the temperature rise and pressure rise stage and the pressure maintaining stage in sequence, the accumulated heating time of the pressure cooking appliance under the preset condition is obtained, the power consumption of the pressure cooking appliance is obtained when the accumulated heating time reaches the preset time, and finally the energy efficiency index is calculated according to the power consumption of the pressure cooking appliance and the reference power consumption. Therefore, the testing process of the testing method comprises a temperature rise and pressure rise stage and a pressure maintaining stage, namely a high pressure maintaining stage, so that the energy consumption testing result is more reasonable and closer to the actual energy efficiency level, the initial water temperature is only required to be measured in the testing process, the temperature in the appliance does not need to be detected in real time, the pressure cooking appliance does not need to be modified, the operation is simpler and more convenient, and the testing precision is higher.
Based on the method, the invention further provides an energy efficiency testing device of the pressure cooking appliance.
Fig. 4 is a block diagram schematically illustrating an energy efficiency testing apparatus of a pressure cooking appliance according to an embodiment of the present invention. As shown in fig. 4, the energy efficiency testing apparatus of the pressure cooking appliance includes: the system comprises a first acquisition module 10, a test module 20 and an energy efficiency calculation module 30.
The first obtaining module 10 is configured to obtain an initial water temperature in the pressure cooking appliance, and calculate a reference power consumption of the pressure cooking appliance according to the initial water temperature; the testing module 20 is configured to control the pressure cooking appliance to work so as to heat water in a preset volume in the pressure cooking appliance, so that the pressure cooking appliance enters a temperature rise and pressure rise stage and a pressure maintenance stage in sequence, obtain an accumulated heating time of the pressure cooking appliance under a preset condition, and obtain power consumption of the pressure cooking appliance when the accumulated heating time reaches a preset time; the energy efficiency calculation module 30 is configured to calculate an energy efficiency index of the pressure cooking appliance according to the power consumption of the pressure cooking appliance and the reference power consumption of the pressure cooking appliance.
Specifically, before carrying out the energy efficiency test, the accessible is weighed and is added predetermined volumetric water in the normal pressure cooking utensil, and after pressure cooking utensil was added predetermined volumetric water, the temperature measurement ware such as thermometer measured the temperature in the pressure cooking utensil, and the temperature that measures this moment is the initial temperature of water in the pressure cooking utensil, and like this, first acquisition module 10 can acquire the initial temperature of water in the pressure cooking utensil through the thermometer.
According to an embodiment of the present invention, the first obtaining module 10 may calculate the reference power consumption E of the pressure cooking appliance according to the following formulabase：
Ebase＝(C×G×(T-T0)×M+G×N)×λ/a
Wherein C is specific heat of water, i.e., 1.16, and the unit is watt hour per kilogram water intake [ W.h/(kg. ℃ C.)]G is the mass of water in kilograms (kg) of a predetermined volume, T0The initial water temperature is expressed in units of time degree (DEG C), T is the water saturated steam temperature corresponding to the rated cooking pressure, the unit is the time degree (DEG C), lambda is the heating mode revision coefficient, M is the pressure revision coefficient corresponding to the rated cooking pressure, N is the unit energy consumption of the pressure maintaining stage corresponding to the rated cooking pressure, the unit is watt hour per kilogram (W.h/kg), and a is a constant, for example, 0.75.
It should be noted that λ may be set according to a heating manner of the pressure cooking appliance, for example, when the pressure cooking appliance is heated by an electromagnetic induction method, λ is 1.1, and when the pressure cooking appliance is heated by another method, λ is 1.0. Moreover, the saturated steam temperature T, the pressure correction coefficient M, and the unit energy consumption N in the pressure maintaining stage corresponding to the rated cooking pressure can be obtained according to the following table 1, that is, after the rated cooking pressure of the pressure cooking appliance is determined, the first obtaining module 10 can obtain the saturated steam temperature T, the pressure correction coefficient M, and the unit energy consumption N in the pressure maintaining stage corresponding to the rated cooking pressure by querying the following table 1.
TABLE 1
As can be seen from table 1 above, when the rated cooking pressure of the pressure cooking appliance is determined to be 100kPa, the saturated steam temperature T corresponding to the rated cooking pressure is 120.24 ℃, the pressure correction coefficient M is 1.22, and the unit energy consumption N in the pressure holding stage is 40.80.
Thus, the first acquiring module 10 acquires the initial water temperature T0Then, the formula E can be obtainedbase＝(C×G×(T-T0) × M + G × N) × lambda/a to calculate the reference power consumption of the pressure cooking appliance.
According to one embodiment of the present invention, the test module 20 is further configured to: the pressure in the pressure cooking appliance is detected, timing is started when the pressure in the pressure cooking appliance rises to a preset pressure, and the timing is stopped when the pressure in the pressure cooking appliance falls to the preset pressure, so that the accumulated heating time of the pressure cooking appliance under a preset condition is obtained according to the timing time.
Specifically, before the pressure cooking appliance is controlled to work, the pressure cooking appliance can be connected with a power supply through a power meter, a pressure gauge with an appropriate range can be installed on a pot cover of the pressure cooking appliance to be tested through a special connector, for example, a pressure valve, so as to detect the pressure in the pressure cooking appliance, and then an operating gear, for example, an operating gear with the maximum pressure and the longest operating time, is selected.
After the pressure gauge is installed and the working gear is selected, the pressure cooking appliance is started under the rated voltage condition, the test module 20 controls the pressure cooking appliance to work according to the selected working gear, the temperature rise and pressure rise stage and the pressure maintaining stage are sequentially started, and the power consumption of the pressure cooking appliance is recorded through the power meter. In the operation process, as shown in fig. 2, in the pressure rising process, when the pressure of the pressure cooking appliance reaches the preset pressure, the timing is started, for example, by using a stopwatch, in the pressure falling process, when the pressure of the pressure cooking appliance is lower than the preset pressure, the timing is stopped, for example, the stopwatch can be controlled to pause the timing, and the above processes are repeated until the accumulated timing time, for example, the timing time of the stopwatch, reaches the preset time, when the accumulated timing time reaches the preset time, the energy efficiency test is finished, and the test module 20 obtains the power consumption of the pressure cooking appliance in the whole energy efficiency test process recorded by the power meter.
In this way, after obtaining the reference power consumption of the pressure cooking appliance and the power consumption of the pressure cooking appliance during the energy efficiency test, the energy efficiency calculation module 30 may calculate the energy efficiency index of the pressure cooking appliance according to the following formula:
η＝(Etest/Ebase)×100％
wherein η is the energy efficiency index of the pressure cooking appliance, EtestIn the process of energy efficiency testPower consumption of pressure cooking appliances, EbaseIs the reference power consumption of the pressure cooking appliance.
According to an embodiment of the present invention, the preset volume may be 35% to 45% times of the rated volume of the pressure cooking appliance, preferably 40% of the rated volume.
According to an embodiment of the present invention, the preset pressure is 70% -80% times of the rated cooking pressure of the pressure cooking appliance, preferably 75% of the rated cooking pressure, and the preset time is 13-17 minutes, preferably 15 minutes.
In addition, the reference power consumption amount of the pressure cooking appliance is not limited to be calculated immediately after the initial water temperature is acquired, and the reference power consumption amount of the pressure cooking appliance may be calculated before the energy efficiency index of the pressure cooking appliance is calculated.
In summary, according to the energy efficiency testing device for the pressure cooking appliance provided by the embodiment of the invention, the first obtaining module is used to obtain the initial water temperature in the pressure cooking appliance, and calculate the reference power consumption of the pressure cooking appliance according to the initial water temperature, then the testing module controls the pressure cooking appliance to work to heat the water with the preset volume so that the pressure cooking appliance enters the temperature rise and pressure rise stage and the pressure maintaining stage successively, obtains the accumulated heating time of the pressure cooking appliance under the preset condition, and obtains the power consumption of the pressure cooking appliance when the accumulated heating time reaches the preset time, and finally the energy efficiency calculating module calculates the energy efficiency index according to the power consumption of the pressure cooking appliance and the reference power consumption. From this, this testing arrangement's test procedure is including rising temperature and pressing stage and pressurize stage promptly high pressure maintenance stage to energy consumption test result is more reasonable, more is close actual energy efficiency level, and the test procedure only needs to measure initial temperature, need not real-time detection utensil internal temperature, thus need not reequip pressure cooking utensil, and it is more simple and convenient to operate, and the measuring accuracy is higher.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A method for testing energy efficiency of a pressure cooking appliance is characterized by comprising the following steps:
acquiring an initial water temperature in the pressure cooking utensil, and calculating a reference power consumption of the pressure cooking utensil according to the initial water temperature, wherein the reference power consumption E of the pressure cooking utensil is calculated according to the following formulabase：
Ebase＝(C×G×(T-T0)×M+G×N)×λ/a
Wherein C is the specific heat of water, G is the mass of water with a predetermined volume, and T0The method comprises the following steps of taking the initial water temperature, T as the water saturated steam temperature corresponding to rated cooking pressure, lambda as a heating mode revision coefficient, M as a pressure revision coefficient corresponding to the rated cooking pressure, N as unit energy consumption of a pressure maintaining stage corresponding to the rated cooking pressure, and a as a constant;
controlling the pressure cooking appliance to work so as to heat a preset volume of water in the pressure cooking appliance, so that the pressure cooking appliance enters a temperature rise and pressure rise stage and a pressure maintaining stage in sequence;
acquiring the accumulated heating time of the pressure cooking appliance under a preset condition, and acquiring the power consumption of the pressure cooking appliance when the accumulated heating time reaches the preset time, wherein the preset condition is that the pressure in the pressure cooking appliance is maintained above a preset pressure;
calculating an energy efficiency index of the pressure cooking appliance according to the power consumption of the pressure cooking appliance and the reference power consumption of the pressure cooking appliance.
2. The energy efficiency testing method of the pressure cooking appliance according to claim 1, wherein obtaining the accumulated heating time of the pressure cooking appliance under the preset condition comprises:
detecting a pressure within the pressure cooking appliance;
and starting timing when the pressure in the pressure cooking appliance rises to a preset pressure, and controlling and stopping timing when the pressure in the pressure cooking appliance falls to the preset pressure so as to obtain the accumulated heating time of the pressure cooking appliance under a preset condition according to the timing time.
3. The energy efficiency testing method of a pressure cooking appliance according to claim 1, wherein the preset volume is 35% to 45% times a rated volume of the pressure cooking appliance.
4. The energy efficiency testing method of the pressure cooking appliance according to claim 2, wherein the preset pressure is 70-80% times of a rated cooking pressure of the pressure cooking appliance, and the preset time is 13-17 minutes.
5. An energy efficiency testing device of a pressure cooking appliance, comprising:
first obtaining moduleA block for acquiring an initial water temperature in the pressure cooking appliance and calculating a reference power consumption amount of the pressure cooking appliance according to the initial water temperature, wherein the first acquisition module calculates the reference power consumption amount E of the pressure cooking appliance according to the following formulabase：
Ebase＝(C×G×(T-T0)×M+G×N)×λ/a
Wherein C is the specific heat of water, G is the mass of water with a predetermined volume, and T0The method comprises the following steps of taking the initial water temperature, T as the water saturated steam temperature corresponding to rated cooking pressure, lambda as a heating mode revision coefficient, M as a pressure revision coefficient corresponding to the rated cooking pressure, N as unit energy consumption of a pressure maintaining stage corresponding to the rated cooking pressure, and a as a constant;
the pressure cooking appliance is controlled to work so as to heat water in a preset volume in the pressure cooking appliance, so that the pressure cooking appliance enters a temperature rise and pressure rise stage and a pressure maintaining stage in sequence, the accumulated heating time of the pressure cooking appliance under a preset condition is obtained, and the power consumption of the pressure cooking appliance is obtained when the accumulated heating time reaches the preset time, wherein the preset condition is that the pressure in the pressure cooking appliance is maintained above a preset pressure;
and the energy efficiency calculation module is used for calculating the energy efficiency index of the pressure cooking appliance according to the power consumption of the pressure cooking appliance and the reference power consumption of the pressure cooking appliance.
6. The energy efficiency testing apparatus of a pressure cooking appliance according to claim 5, wherein the testing module is further configured to:
the method comprises the steps of detecting the pressure in the pressure cooking appliance, starting timing when the pressure in the pressure cooking appliance rises to a preset pressure, and controlling and stopping timing when the pressure in the pressure cooking appliance falls to the preset pressure so as to obtain the accumulated heating time of the pressure cooking appliance under a preset condition according to the timing time.
7. The energy efficiency testing apparatus of a pressure cooking appliance according to claim 5, wherein the preset volume is 35% to 45% times a rated volume of the pressure cooking appliance.
8. The energy efficiency testing device of the pressure cooking appliance according to claim 6, wherein the preset pressure is 70-80% times of a rated cooking pressure of the pressure cooking appliance, and the preset time is 13-17 minutes.
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