CN113623838B

CN113623838B - Control method of kitchen air conditioner, controller of kitchen air conditioner and kitchen air conditioner

Info

Publication number: CN113623838B
Application number: CN202110905133.3A
Authority: CN
Inventors: 姚晓波; 王侃; 杜顺开; 蔡国健
Original assignee: GD Midea Air Conditioning Equipment Co Ltd; Chongqing Midea Refrigeration Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd; Chongqing Midea Refrigeration Equipment Co Ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-08-26
Anticipated expiration: 2041-08-06
Also published as: CN113623838A

Abstract

The invention discloses a kitchen air conditioner control method, a kitchen air conditioner controller and a kitchen air conditioner, wherein the kitchen air conditioner control method comprises the following steps: acquiring first heat transmitted to a target object by a heater in unit time; acquiring second heat quantity which is absorbed by a kitchen air conditioner from the target object in the unit time; comparing the magnitude of the first heat quantity and the second heat quantity; and adjusting the refrigerating capacity of the kitchen air conditioner projected to the target object according to the comparison result. According to the control method of the kitchen air conditioner, the problem of energy bringing of the heater in the kitchen space can be solved, the refrigerating capacity of the kitchen air conditioner can be adjusted and changed according to the heat transmitted to the target object by the heater, the target object is always kept in a heat balance state, and the target object is kept at the preset temperature or in a comfortable state when the target object is achieved.

Description

Control method of kitchen air conditioner, controller of kitchen air conditioner and kitchen air conditioner

Technical Field

The invention relates to the technical field of household appliances, in particular to a kitchen air conditioner control method, a kitchen air conditioner controller and a kitchen air conditioner.

Background

In the related art, a control method of an air conditioner is generally a target temperature control method, taking refrigeration as an example, a set temperature is set by a remote controller, the difference between an actual measured temperature and the set temperature is large, namely, the capacity output of the air conditioner is increased, the capacity output is reduced when the difference is small, and the air conditioner is shut down when the set temperature is reached.

The integrated cooker operating table is basically not provided with an air conditioner, when the traditional air conditioner is independently installed, the use environment of the kitchen air conditioner is more complicated due to the complex airflow organization in a kitchen, and the cold output of the kitchen air conditioner cannot be well controlled.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. To this end, a first aspect of the present invention is to provide a control method for a kitchen air conditioner, which can solve the problem of energy extraction of a heater in a kitchen space, and adjust and change the cooling capacity of the kitchen air conditioner according to the heat quantity transmitted from the heater to a target object, so that the target object is always maintained in a thermal equilibrium state.

The invention provides a controller of a kitchen air conditioner in a second aspect.

The third aspect of the invention provides a kitchen air conditioner with the controller.

A control method of a kitchen air conditioner according to a first aspect of the present invention includes the steps of: acquiring first heat transmitted to a target object by a heater in unit time; acquiring second heat quantity which is absorbed by a kitchen air conditioner from the target object in the unit time; comparing the magnitude of the first heat and the second heat; and adjusting the refrigerating capacity of the kitchen air conditioner to the target object according to the comparison result.

According to the control method of the kitchen air conditioner, the first heat quantity transmitted to the target object by the heater and the second heat quantity absorbed by the kitchen air conditioner from the target object are compared, and the refrigerating capacity of the kitchen air conditioner to the target object is adjusted according to the comparison result, so that the problem of energy bringing of the heater in a kitchen space can be solved, the refrigerating capacity of the kitchen air conditioner can be adjusted and changed according to the heat quantity transmitted to the target object by the heater, the target object is always kept in a heat balance state, and the target object is kept at a preset temperature or in a comfortable state during realization.

In some embodiments, the galley air conditioner has an unmanned thermal balance mode in which the target object is a galley space.

In some embodiments, in the unmanned heat balance mode, the first heat is a heat retention Q1 of the heater in the galley space, the heat retention Q1 is equal to a heat generation Q of the heater per unit time multiplied by at least one retention factor η _{Stagnation of qi} Said retention coefficient η _{Stagnation of qi} The method comprises the following steps: eta _{Hysteresis 1} And η _{Hysteresis 1} ＝(1-η _{Effect 1} )，η _{Effect 1} Is the thermal efficiency of the heater.

In some embodiments, the retention coefficient η is when a range hood is present in the kitchen _{Stagnation of qi} Further comprising: eta _{Hysteresis 2} And η _{Hysteresis 2} ＝(1-η _{Effect 2} )，η _{Effect 2} Is the heat recovery efficiency of the cigarette machine.

In some embodiments, when the heater is a burner, the obtaining of the first heat quantity propagated to the target object by the heater in unit time includes: acquiring the flow q of the burner in the unit time; calculating the heat of formation Q, which is equal to the flow Q multiplied by the heating value of the fuel gas; calculating the heat of retention Q1, the heat of retention Q1 being equal to the heat of formation Q multiplied by each of the retention coefficients η _{Stagnation of qi} 。

In some embodiments, the second amount of heat is an effective absorption heat Q2 of the kitchen air conditioner from the target object, the effective absorption heat Q2 being equal to a cold wind absorption heat Qc of the kitchen air conditioner multiplied by at least one air retention ratio, the air retention ratio being a ratio of the cold wind remaining in the kitchen.

In some embodiments, the cool air absorbing heat Qc ═ Tair-To ═ h · a · Cp, where Tair is an indoor temperature of a kitchen, To is an outlet air temperature of the kitchen air conditioner, h is an indoor air volume of the kitchen air conditioner, a is a latent heat coefficient, and Cp is a specific heat capacity of air; wherein, when Cp is selected to be constant 1.005, a is 1+ eta q, and eta q is the latent heat rate of cold air; when the humidity value d of the cold air can be obtained, a is constant 1, Qc (Tair Cpair-To Cpto) h, Cpto (1.005) To + (2500+ 1.84) d, Cpair (1.005) Tair + (2500+ 1.84) d, and both Tair and To are Kelvin temperature values.

In some embodiments, the kitchen air conditioner has an offset heat radiation mode in which the target object is a cooking user.

In some embodiments, in the offset heat radiation mode, the first amount of heat is an absorption Q3 of flame radiation of the heater, the absorption Q3 ═ Tfire +273.15 ⁴ -(Tr+273.15) ⁴ ) F, Tfire is the temperature of the flame, Tr is the body surface temperature of the cooking user, F is the emissivity.

In some embodiments, when the difference between the first heat and the second heat is within a set range, the cooling capacity of the kitchen air conditioner is maintained.

In some embodiments, the galley air conditioner is an inverter air conditioner, and the compressor frequency of the galley air conditioner is increased when the first heat exceeds the second heat by a first threshold; when the second heat exceeds the first heat by a second threshold, reducing a compressor frequency of the galley air conditioner.

In some embodiments, the control method further comprises the steps of: when a user is detected in a kitchen, the kitchen air conditioner is adjusted to wind towards the user; when no user is detected in the kitchen, the air outlet direction of the kitchen air conditioner is far away from the air exhaust direction of the kitchen.

A controller of a kitchen air conditioner according to a second aspect of the present invention includes: a first acquisition module for acquiring a first amount of heat that the heater propagates to the target object in a unit time; a second acquisition module, wherein the first acquisition module is used for acquiring second heat quantity which is absorbed by the kitchen air conditioner from the target object in the unit time; the comparison module is connected with the first acquisition module and the second acquisition module and is used for comparing the first heat quantity with the second heat quantity; and the control module is connected with the comparison module and used for adjusting the refrigerating capacity of the kitchen air conditioner on the target object according to the comparison result.

According to the controller of the kitchen air conditioner, the comparison module compares the first heat quantity transmitted to the target object by the heater with the second heat quantity absorbed by the kitchen air conditioner from the target object, and the controller adjusts the refrigerating capacity of the kitchen air conditioner to the target object according to the comparison result of the comparison module, so that the problem of energy bringing of the heater in a kitchen space can be solved, the refrigerating capacity of the kitchen air conditioner can be adjusted and changed according to the heat quantity transmitted to the target object by the heater, the target object is always kept in a heat balance state, and the target object is kept at a preset temperature or in a comfortable state when the target object is achieved.

In some embodiments, the controller of a kitchen air conditioner further includes: the mode selection module is provided with at least two switchable working modes, the working modes comprise an unmanned heat balance mode and a heat radiation offset mode, and the mode selection module is selected manually or through a detection result.

In some embodiments, the first obtaining module is connected to the mode selecting module, when the mode selecting module is the unmanned heat balance mode, the first obtaining module obtains the first heat amount as a heat retention Q1 of the heater in the kitchen space, the heat retention Q1 is equal to a heat generation Q of the heater in the unit time multiplied by at least one retention coefficient η _{Stagnation of qi} Said retention coefficient η _{Stagnation of qi} The method comprises the following steps: eta _{Hysteresis 1} And η _{Hysteresis 1} ＝(1-η _{Effect 1} )，η _{Effect 1} Is the thermal efficiency of the heater; when the mode selection module is the offset heat radiation mode, the first heat quantity acquired by the first acquisition module is an absorption quantity Q3 of flame radiation of the heater, the absorption quantity Q3 ═ Tfire +273.15 ⁴ -(Tr+273.15) ⁴ ) F, Tfire is the temperature of the flame, Tr is the body surface temperature of the cooking user, F is the emissivity.

In some embodiments, the first obtaining module comprises: an infrared temperature sensor for detecting the flame temperature; and the flowmeter is used for detecting the gas flow.

In some embodiments, the second obtaining module comprises: a first temperature sensor for detecting the outlet air temperature To of the kitchen air conditioner; a second temperature sensor for detecting an indoor temperature Tair of the kitchen air conditioner; the second heat amount is an effective absorption heat Q2 of the kitchen air conditioner from the target object, the effective absorption heat Q2 being equal to a cold wind absorption heat Qc of the kitchen air conditioner multiplied by at least one air retention ratio, the air retention ratio being a ratio of the cold wind remaining in the kitchen; and the cold air absorption heat Qc is (Tair-To) h a Cp, wherein h is the air volume of the kitchen air conditioner, a is the latent heat coefficient, and Cp is the specific heat capacity of air.

A kitchen air conditioner according to a third aspect of the present invention includes the controller of the kitchen air conditioner according to the second aspect of the present invention.

According to the kitchen air conditioner, the controller of the kitchen air conditioner in the second aspect is arranged, so that the problem of energy bringing of the heater in the kitchen space can be solved, the refrigerating capacity of the kitchen air conditioner can be adjusted and changed according to the heat quantity spread to the target object by the heater, the target object is always maintained in a heat balance state, the target object is maintained at a preset temperature or in a comfortable state when the target object is achieved, and the overall performance of the kitchen air conditioner is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a control flowchart of a control method of a kitchen air conditioner according to an embodiment of the present invention;

fig. 2 is a control flowchart of a control method of a kitchen air conditioner in an unmanned heat balance mode according to an embodiment of the present invention;

FIG. 3 is a flow chart of the heater of FIG. 2 for obtaining heat retention Q1 in the galley space per unit time;

fig. 4 is a control flowchart of a control method of a kitchen air conditioner in a heat radiation cancellation mode according to an embodiment of the present invention;

fig. 5 is a control flowchart of a control method of a kitchen air conditioner according to an embodiment of the present invention;

fig. 6 is a schematic view of a galley air conditioner according to an embodiment of the present invention for cooling a galley space;

fig. 7 is a control flowchart of a kitchen air conditioner in an unmanned heat balance mode according to an embodiment of the present invention;

fig. 8 is a control flowchart of the kitchen air conditioner in the cancellation of heat radiation mode 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 reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.

First, a kitchen air conditioner including a compressor, a condenser, a throttling element, and an evaporator connected in series in this order to form a refrigerant circulation circuit will be described in brief with reference to fig. 6. When the kitchen air conditioner refrigerates, high-temperature refrigerant compressed by the compressor is discharged from an exhaust port of the compressor, enters the condenser positioned outdoors through a refrigerant pipeline for heat exchange and condensation, enters the evaporator positioned indoors after being throttled by the throttling element, evaporates and absorbs heat in the indoor evaporator to take away heat in a kitchen, cools the kitchen, and finally returns to the compressor again to be compressed again.

As can be seen from the above, the kitchen air conditioner is used to provide cooling energy to a kitchen space, and the kitchen space has a more complicated airflow structure than other spaces (such as a living room or a bedroom), and the kitchen air conditioner has a more complicated usage environment due to the increased intensity of heat radiation because a flame heat source is added to the kitchen space, and a different usage control method from that of a general air conditioner is required after the kitchen air conditioner reaches a certain temperature. Therefore, the invention provides a control method of a kitchen air conditioner.

A control method of a kitchen air conditioner according to an embodiment of the first aspect of the present invention will be described with reference to fig. 1 to 8.

As shown in fig. 1, a control method of a kitchen air conditioner according to an embodiment of a first aspect of the present invention includes the steps of:

in step S10, a first heat quantity propagated to the target object by the heater per unit time is acquired.

The heater may be a gas cooker or a burner, and the target object may be a kitchen space, or the target object may also be a cooking user located in the kitchen space. The first heat propagated to the target object by the heater per unit time is the heat transferred to the target object by the heater during heating or the heat transferred to the target by heat radiation per unit time. The amount of combustion gas generated by combustion can be calculated by detecting the amount of combustion gas of the heater in unit time, and the first heat quantity transferred to the target object by the heater can be calculated according to the amount of combustion gas.

And step S20, acquiring second heat quantity which is absorbed by the kitchen air conditioner from the target object in unit time.

That is, the second heat, which is the heat absorbed by the air conditioner in the kitchen per unit time, needs to be obtained in this step. The method comprises the steps of acquiring cold energy released by a kitchen air conditioner to a target object in unit time, determining the cold energy according to the real-time refrigerating capacity of the kitchen air conditioner, specifically calculating the cold energy released by the kitchen air conditioner to the target object in unit time according to relevant parameters by detecting parameters such as air outlet temperature, air outlet quantity and kitchen indoor temperature of the kitchen air conditioner, and calculating second heat quantity which can be absorbed by the kitchen air conditioner from the target object in unit time according to the cold energy.

When step S10 and step S20 are executed successively, the order of step S10 and step S20 is not particularly limited, that is, the first heat quantity transmitted to the target object by the heater in unit time may be obtained first, and then the second heat quantity absorbed from the target object by the kitchen air conditioner in unit time may be obtained; the second heat absorbed by the kitchen air conditioner from the target object in the unit time may be obtained first, and then the first heat transmitted to the target object by the heater in the unit time may be obtained.

Step S30, comparing the first heat quantity and the second heat quantity.

And step S40, adjusting the refrigerating capacity of the kitchen air conditioner to the target object according to the comparison result.

In the control method of the embodiment, the target object is taken as a reference, the first heat quantity acquired by the target object and the second heat quantity absorbed by the target object are compared, whether balance exists between the first heat quantity acquired by the target object and the second heat quantity absorbed by the target object is judged, and whether the refrigerating capacity of the kitchen air conditioner is adjusted is determined according to the judgment result.

When the first heat quantity acquired by the target object and the absorbed second heat quantity are basically balanced, the kitchen air conditioner can keep the current refrigerating capacity and the refrigerating capacity of the target object in the current state, so that the acquired and absorbed heat quantities continue to keep balanced for the target object, and the target object is kept in a heat balance state.

When the first heat quantity acquired by the target object and the second heat quantity absorbed by the target object are unbalanced, if the first heat quantity transmitted by the heater acquired by the target object is significantly larger than the second heat quantity absorbed by the kitchen air conditioner of the target object, at this time, for the target object, the input of the heat quantity is significantly larger than the output of the heat quantity, namely, the target object is in a state of continuous input of the total heat quantity, so that when the target object is the kitchen space, the temperature of the kitchen space can be continuously increased, and when the target object is a cooking user, the cooking user can feel increasingly hot, therefore, in this state, the cooling quantity provided by the kitchen air conditioner to the target object can be increased, so that the cooling quantity delivered by the kitchen air conditioner to the target object is balanced with the heat quantity absorbed by the target object, and the kitchen space is maintained at a preset temperature or the cooking user is maintained in a more comfortable state.

If the first heat quantity transmitted by the heater acquired by the target object is significantly lower than the second heat quantity absorbed by the kitchen air conditioner, at this time, the output of the heat quantity is significantly greater than the input of the heat quantity for the target object, that is, the target object is in a state of continuous output of the total heat quantity, so that when the target object is a kitchen space, the temperature of the kitchen space is lower and lower, and when the target object is a cooking user, the cooking user feels cooler and cooler, therefore, in this state, the refrigerating capacity provided by the kitchen air conditioner to the target object can be reduced, so that the refrigerating capacity put into the target object by the kitchen air conditioner is balanced with the heat quantity absorbed by the target object, and the kitchen space is maintained at a preset temperature or the cooking user is maintained in a more comfortable state.

According to the control method of the kitchen air conditioner, the first heat transmitted to the target object by the heater and the second heat absorbed by the kitchen air conditioner from the target object are compared, and the refrigerating capacity provided by the kitchen air conditioner for the target object is adjusted according to the comparison result, so that the problem of energy bringing of the heater in a kitchen space can be solved, the refrigerating capacity of the kitchen air conditioner can be adjusted and changed according to the heat transmitted to the target object by the heater, the target object is always kept in a heat balance state, and the target object is kept at a preset temperature or in a comfortable state when the target object is achieved.

In one embodiment of the present invention, as shown in fig. 2, the kitchen air conditioner may have an unmanned heat balance mode in which the target object may be a kitchen space. At this time, the control method of the kitchen air conditioner may include:

step S110, acquiring first heat transmitted to the kitchen space by the heater in unit time;

step S120, acquiring second heat quantity which is absorbed by the kitchen air conditioner from the kitchen space in unit time;

step S130, comparing the first heat quantity with the second heat quantity;

and S140, adjusting the refrigerating capacity of the kitchen air conditioner projected to the kitchen space according to the comparison result.

In this embodiment, the kitchen space is used as a heat balance analysis object, the first heat quantity acquired by the kitchen space and the second heat quantity absorbed by the kitchen space are compared, whether balance is achieved between the first heat quantity acquired by the kitchen space and the second heat quantity absorbed by the kitchen space is judged, and whether the refrigerating capacity of the kitchen air conditioner is adjusted is determined according to the judgment result. Therefore, after the temperature of the kitchen space is reached, the refrigerating capacity of the kitchen air conditioner can be adjusted along with the heat transmitted by the heater in the kitchen space, so that the heat balance in the kitchen space is achieved, and the kitchen space is always kept in a heat balance state.

When the first heat quantity obtained by the kitchen space and the absorbed second heat quantity are basically balanced, the kitchen air conditioner can keep the current refrigerating capacity, so that the heat quantity obtained by the kitchen space and absorbed heat quantity can be kept balanced continuously, and the heat balance state of the kitchen space is maintained. When the first heat that the heater that obtains when the kitchen space was propagated is showing to be greater than the second heat that the kitchen space was absorbed by the kitchen air conditioner, the heat input in the kitchen space is showing to be greater than heat output, can lead to the total heat in kitchen space to continuously increase like this, and the temperature in kitchen space can continuously rise, at this moment, can increase the refrigerating output that the kitchen air conditioner thrown to the kitchen space to make the refrigerating output that the kitchen air conditioner was put in to the kitchen space balance with the heat that the kitchen space absorbed. When the first heat that the heater that obtains when the kitchen space was propagated is showing to be less than the second heat that the kitchen space was absorbed by the kitchen air conditioner, the heat output in kitchen space is showing to be greater than heat input, can lead to the total heat in kitchen space to reduce like this, and the temperature in kitchen space reduces, and at this moment, can reduce the refrigeration capacity that the kitchen air conditioner thrown to the kitchen space to make the refrigeration capacity that the kitchen air conditioner was put in to the kitchen space balance with the heat that the kitchen space absorbed.

In one specific example of the present invention, the first heat amount may be a heat retention Q1 of the heater in the kitchen space in the unmanned heat balance mode, and the heat retention Q1 may be equal to a heat generation Q of the heater multiplied by at least one retention coefficient η in a unit time _{Stagnation of qi} . That is, the retention coefficient may be only one, and the retention coefficients may include two, three, four, and four or more. When the retention coefficient includes only one, the retention heat Q1 is the heat of formation Q × the retention coefficient η of the heater per unit time _{Stagnation of qi} When the retention coefficient includes two or more, the heat of retention Q1 is equal to that of the heater per unit timeThe generated heat Q is sequentially multiplied by a plurality of retention coefficients.

Further, the retention coefficient η _{Stagnation of qi} The method can comprise the following steps: eta _{Hysteresis 1} And η _{Hysteresis 1} ＝(1-η _{Effect 1} )，η _{Effect 1} May be the thermal efficiency of the heater. In particular η _{Effect 1} Indicating the proportion of heat that the heater absorbs from the food while heating the cooked food. In this embodiment, when the heater cooks and heats food, a part of the heat released by the heater is absorbed by the cooked food, and another part of the heat is dissipated to the environment, for example, to the kitchen space. At this time, η of the retention coefficient _{Hysteresis 1} ＝(1-η _{Effect 1} ). Thereby, it is possible to easily calculate the amount of heat that the heater stays in the kitchen space except for heating the cooking food.

Therein, it is understood that the heater may include different energy efficiency levels, and when the energy efficiency levels of the heater are different, the thermal efficiency of the heater is different, specifically, the energy efficiency η of the heater _{Effect 1} Can be divided into primary energy efficiency, secondary energy efficiency, tertiary energy efficiency and the like.

In one example, the heater may be an integrated cooker, and when the integrated cooker heats, the thermal efficiency of the heater is the thermal efficiency of the integrated cooker. For the integrated cooker, the energy efficiency grades of the integrated cooker comprise primary energy efficiency, secondary energy efficiency, tertiary energy efficiency and the like, and the heat efficiency of the integrated cooker at each energy efficiency grade is unequal. Specifically, when the integrated stove is of primary energy efficiency, the heat efficiency eta of the integrated stove _{Effect 1} More than or equal to 59 percent, and when the integrated stove has two-stage energy efficiency, the heat efficiency eta of the integrated stove _{Effect 1} 56% or more, when the integrated stove is three-stage energy efficiency, the heat efficiency eta of the integrated stove _{Effect 1} 53% or more.

When a heater for cooking is arranged in the kitchen space, a smoke machine for pumping smoke generated in cooking out of the kitchen space is usually arranged, and when the smoke machine works, the smoke machine can not only suck and discharge smoke generated in cooking out of the outdoor space, but also suck out part of heat in the kitchen space.

Therefore, further, when the range hood is provided in a kitchen, the retention coefficient η _{Stagnation of qi} The method can also comprise the following steps: eta _{Hysteresis 2} And η _{Hysteresis 2} May be equal to (1- η - _{Effect 2} ) Wherein η _{Effect 2} Is the heat recovery efficiency of the cigarette machine. Namely: eta _{Effect 2} Representing the proportion of heat drawn by the cigarette machine. When the range hood operates, the fan in the range hood operates to draw away one part of the smoke generated above the heater, and the other part of the smoke remains in the kitchen space, so that eta is _{Hysteresis 2} ＝(1-η _{Effect 2} ) The amount of heat remaining in the galley space while the range hood is operating may be indicated.

In this embodiment, when the heater heats the cooked food, when the range hood extracts the cooking fumes, η _{Stagnation of qi} ＝η _{Hysteresis 1} ×η _{Hysteresis 2} ＝(1-η _{Effect 1} )×(1-η _{Effect 2} ) At this time, the heat Q1 (Q × (1- η) ×) accumulated in the kitchen space by the heater _{Effect 1} )×(1-η _{Effect 2} ) Wherein Q is the heat generated by the heater per unit time, η _{Effect 1} Is the thermal efficiency of the heater eta _{Effect 2} Is the heat recovery efficiency of the cigarette machine. Thus, the heat quantity of the heater staying in the kitchen space can be calculated.

In one specific example of the present invention, as shown in fig. 3, the heater may be a burner, and the obtaining of the first heat quantity transmitted to the target object by the heater in unit time may include the following specific steps:

step S111 acquires a flow rate q per unit time of the burner.

Wherein the flow rate q of the burner per unit time can be detected by a flow meter that detects the gas flow rate. For example, a flow meter may be connected in series to the intake passage of the burner, and the flow meter may detect the flow rate of gas entering the burner per unit time.

In one specific embodiment, in the step of obtaining the flow rate q of the burner per unit time, a wet flowmeter is adopted to meter an air inlet channel of the burner so as to obtain the flow rate q; metering for multiple times, and averaging the metering results of multiple times to obtain the flow q. In other words, said obtaining the flow rate q of the burner per unit time comprises: and reading the value of the flow meter for a plurality of times in unit time, and averaging the read values, wherein the average value is the flow q of the burner in unit time. In one specific example, the flow counter value is read 12 times for the flow meter in 1 minute, and the 12 times are respectively: q1, q2, q3, q4 … q12, and a flow rate q ═ q1+ q2+ q3+ q4+ q5+ … + q11+ q12)/12, wherein the unit of the flow rate q is cubic meters per second.

In step S112, the generated heat Q is calculated, and the generated heat Q is equal to the flow rate Q × the calorific value of the fuel gas.

In one specific example, the kitchen air conditioner is provided with a controller, the controller can be in communication connection with a flow meter, the flow meter feeds a detected flow value Q back to the controller, and the controller calculates the generated heat Q of the burner per unit time according to the detected flow value Q, wherein the generated heat Q is Q multiplied by the heat value of the gas, optionally, the gas can be natural gas or coal gas, and the heat value of the gas can be input into the controller in advance. For example, when the hot gas of a certain type of gas is 37681, the generated heat Q is Q × 37681, and the unit of the generated heat Q is kJ.

In step S113, the heat retention Q1 is calculated, and the heat retention Q1 is the generated heat Q × the retention coefficient η _{Stagnation of qi} 。

That is, the heat of stagnation Q1 can be further calculated from the heat of formation Q calculated as described above, Q1 ═ Q × η _{Stagnation of qi} 。

According to the control method of the kitchen air conditioner, the gas flow q in the unit time of the burner is obtained, the heat retained in the kitchen space by the burner is calculated by utilizing the flow q, the calculation mode is simple, the result is accurate and reliable, and therefore the basis can be conveniently provided for adjusting the refrigerating capacity of the kitchen air conditioner, and the heat balance in the kitchen space is realized.

Because the kitchen space is not a completely closed space, when a smoke machine or an exhaust fan in the kitchen is opened, or when a door or a window of the kitchen is opened, a part of the refrigerating capacity of the kitchen air conditioner put into the kitchen space can be discharged to the space outside the kitchen space through the smoke machine, the exhaust fan, the door or the window and the like, and at the moment, the refrigerating capacity of the kitchen air conditioner provided for the kitchen space is smaller than that of the kitchen air conditioner.

Therefore, according to some embodiments of the present invention, the second heat may be effective absorption heat Q2 of the kitchen air conditioner from the target object, and the effective absorption heat Q2 is cold wind absorption heat Qc of the kitchen air conditioner × at least one air retention ratio, which may be a ratio in which cold wind is retained in the kitchen. That is, the effective cooling capacity Q2 of the kitchen air conditioner to the target object is equal to the total cooling capacity of the cool air blown out by the kitchen air conditioner multiplied by the air retention ratio. The wind retention ratio may be only one, or two, three, four, or more than four. When the wind retention ratio includes only one, the effective absorption heat Q2 is the cold wind absorption heat Qc × the wind retention ratio, and when the wind retention ratio includes two or more, the effective absorption heat Q2 is the cold wind absorption heat Qc multiplied by a plurality of wind retention ratios in sequence.

Wherein, the air-remaining proportion is the proportion of cold air remaining in the kitchen when the range hood, the exhaust fan, the door and/or the window and the like are opened. It can be understood that the air-remaining proportion can be determined according to the specific conditions of the kitchen, the numerical value of the air-remaining proportion can be obtained by a manufacturer according to experiments, then a proportion table is obtained, and the controller looks up the table according to the conditions of the kitchen to obtain the corresponding air-remaining proportion. Here, it should be noted that the numerical value of the wind retention ratio itself is not the point of the invention of the present application.

According To a specific example of the present invention, the cool air absorption heat Qc ═ (Tair-To) × a Cp, specifically Tair is an indoor temperature in the kitchen space, To is an outlet air temperature of the air conditioner, h is an indoor air volume of the indoor unit of the air conditioner, a is a latent heat coefficient, and Cp is a specific heat capacity of the air. That is, the cold air absorption heat Qc is equal to the difference between the indoor temperature of the kitchen and the air-conditioning outlet temperature × the indoor air volume of the kitchen air conditioner × the latent heat coefficient × the specific heat capacity of the air.

Wherein, when Cp is constant 1.005, a is 1+ η q, and η q is the latent heat rate of the cold air.

When the humidity value of the cool air is d, a may take a constant of 1, and at this time, Qc ═ (Tair × Cpair-To × Cpto) × h, where Cpto ═ 1.005 × To + (2500+1.84 × To) < d >, Cpair ═ 1.005 × Tair + (2500+1.84 × Tair) < d >, Tair is the kelvin temperature, and To is also the kelvin temperature value.

It is understood that when a humidity factor (such as a humidity value d) is considered in the calculation of the specific heat capacity Cp of the air, the latent heat coefficient a does not need to be considered again, namely the latent heat coefficient a is 1; when the specific heat capacity Cp of air is constant 1.005, that is, the specific heat capacity Cp of air does not take into account the influence of humidity, the latent heat coefficient a needs to be taken into account by the latent heat rate including humid air, that is, a is 1+ η q.

Because the specific heat capacity of water is different from that of air, the specific heat capacity of water is obviously smaller than that of air, and when cold air blown out by the kitchen air conditioner has certain humidity, the heat absorption capacity of water mist condensed in the cold air is obviously greater than that of the cold air. Therefore, in the present embodiment, by absorbing the cold air with heat Qc ═ Tair-To ═ h × a Cp, the cooling capacity of the moisture in the cold air (mist condensed in the cold air) is included in the formula, and thereby, the calculation accuracy of the cold air heat absorption rate Qc of the kitchen air conditioner can be further improved.

The air volume h of the indoor unit corresponds to the rotating speed n of the indoor unit, and when the rotating speed n of the indoor unit is fixed, the air volume h of the indoor unit is determined, so that the air volume h of the indoor unit of the air-out air conditioner can be found out from a prestored data table in a controller of the kitchen air conditioner, namely the corresponding air volume h of the indoor unit can be found out from the prestored data table according to the rotating speed n of the indoor unit.

According to some embodiments of the present invention, as shown in fig. 4, the kitchen air conditioner has a heat radiation cancellation mode in which a target object is a cooking user. The control method at this time may include:

step S210, acquiring a first heat quantity transmitted to a cooking user by a heater in unit time;

step S220, acquiring second heat quantity which is absorbed by the kitchen air conditioner from a cooking user in unit time;

step S230, comparing the first heat quantity and the second heat quantity;

and S240, adjusting the refrigerating capacity of the kitchen air conditioner to the cooking user according to the comparison result.

In this embodiment, a cooking user is used as a heat balance analysis object, a first heat quantity acquired by the cooking user and a second heat quantity absorbed by the cooking user are compared, whether balance is achieved between the first heat quantity acquired by the cooking user and the second heat quantity absorbed by the cooking user is judged, and whether the refrigerating capacity of the kitchen air conditioner is adjusted is determined according to a judgment result. When the culinary art user cooks in the kitchen, the kitchen air conditioner can offset and balance the heat of the heater that the culinary art user received, make the kitchen air conditioner can be along with the heat radiation of the heater that the culinary art user received, adjust the refrigerating output of kitchen air conditioner, so as to avoid the culinary art user to feel uncomfortable because of the heat radiation of heater, improve human travelling comfort, and compare in the temperature that reduces the kitchen space simply, this embodiment directly offsets and balances the heat radiation of combustor to the culinary art user, can avoid the waste of the energy.

When the first heat and the absorbed second heat obtained by the cooking user are basically balanced, the kitchen air conditioner can keep the current refrigerating capacity, so that the heat obtained and absorbed by the cooking user is kept balanced continuously, the cooking user is kept in a heat balance state, and the comfort of a human body is ensured. When the first heat quantity transmitted by the heater acquired by the cooking user is obviously greater than the second heat quantity absorbed by the cooking user by the kitchen air conditioner, the heat input of the cooking user is obviously greater than the heat output, so that the cooking user feels increasingly hot and uncomfortable, and at the moment, the refrigerating capacity of the kitchen air conditioner projected to the cooking user can be increased, so that the refrigerating capacity of the kitchen air conditioner projected to the cooking user is balanced with the heat quantity absorbed by the cooking user. When the first heat transmitted by the heater acquired by the cooking user is obviously lower than the second heat absorbed by the cooking user through the kitchen air conditioner, the heat output of the cooking user is obviously larger than the heat input, so that the cooking user feels cooler and cooler, and at the moment, the refrigerating capacity of the kitchen air conditioner projected to the cooking user can be reduced, so that the refrigerating capacity of the kitchen air conditioner projected to the cooking user is balanced with the heat absorbed by the cooking user.

In one particular example of the invention, in the offset heat radiation mode, the first amount of heat may be an absorption amount of flame radiation of the heater, Q3, in particular an absorption amount of Q3 ((Tfire +273.15) ⁴ -(Tr+273.15) ⁴ ) F, Tfire is the temperature value of the flame, Tr is the temperature of the user's body surface, F is the emissivity. This allows the amount of radiation of the flame of the heater absorbed by the cooking user to be calculated.

According to some embodiments of the present invention, as shown in fig. 5, when the difference value between the first heat and the second heat is within the set range, the first heat and the absorbed second heat acquired by the target object are substantially balanced, and thus, the cooling capacity of the kitchen air conditioner may be maintained, so that the target object continues to maintain the heat balance state.

According to some embodiments of the present invention, as shown in fig. 5, the kitchen air conditioner may be an inverter air conditioner, in which when the first heat exceeds the second heat to reach the first threshold, the input of heat is significantly greater than the output of heat for the target object, and therefore, in this state, the cooling capacity provided by the kitchen air conditioner to the target object may be increased. Specifically, the frequency of the compressor of the air conditioner can be increased, and the refrigerating capacity output to the target object by the kitchen air conditioner can be increased, so that the first heat of the heater acquired by the target object and the second heat extracted from the target object by the kitchen air conditioner tend to balance.

When the second heat exceeds the first heat and reaches the second threshold, the output of the heat is significantly greater than the input of the heat for the target object, and therefore, in this state, the cooling capacity of the kitchen air conditioner to the target object can be reduced. Specifically, the frequency of the compressor of the air conditioner can be reduced, and the refrigerating capacity output by the kitchen air conditioner to the target object is reduced, so that the first heat of the heater acquired by the target object and the second heat extracted by the kitchen air conditioner from the target object tend to balance.

It is to be understood that the first threshold and the second threshold may be the same or different.

According to some embodiments of the present invention, the control method of the kitchen air conditioner further comprises the steps of:

when a cooking user is detected in the kitchen space, the kitchen air conditioner can be adjusted to exhaust air towards the position of the user; at this time, the kitchen air conditioner may enter a heat radiation offset mode, and the kitchen air conditioner is configured to absorb heat from a user location to offset heat radiated from the heater to the user, so that the heat radiated from the heater received by the user may be balanced with cooling capacity provided by the kitchen air conditioner, and the user may feel comfortable. Compared with the method of simply reducing the temperature of the kitchen space, the present embodiment can directly offset and balance the heat radiation of the cooking user, and can avoid the waste of energy.

When detecting that no cooking user exists in the kitchen space, the air outlet direction of the kitchen air conditioner can be far away from the air exhaust direction of the kitchen. Therefore, cold air blown out by the kitchen air conditioner can be reduced or avoided to be directly discharged from the air exhaust position of the kitchen space, and energy waste is avoided. When it is detected that no cooking user is present in the kitchen space, the kitchen air conditioner may enter an unmanned heat balance mode, the kitchen air conditioner being configured to draw heat from the kitchen space to offset heat transferred from the heater to the kitchen space, thereby balancing heat input and heat output from the kitchen space to maintain heat balance in the kitchen space.

A controller of a kitchen air conditioner according to a second aspect of the present invention will be described with reference to fig. 6.

A controller of a kitchen air conditioner according to a second aspect of the present invention includes: the device comprises a first acquisition module, a second acquisition module, a comparison module and a control module.

Specifically, the first acquiring module may be configured to acquire a first heat amount, where the first heat amount is an amount of heat that the heater transmits to the target object in a unit time. Wherein, the heater can be a gas cooker or a burner, etc., and the target object can be a kitchen space or a cooking user located in the kitchen space, etc. The first heat quantity propagated to the target object by the heater in the unit time is: the heater transmits, emits or radiates heat to the target object during heating per unit time. The first heating amount propagated to the target object by the heater can be calculated by detecting the combustion amount of the gas in the heater per unit time, calculating the generated heat according to the combustion gas amount, and calculating the first heat which can be propagated to the target object by the heater according to the heat.

The first acquiring module may be further configured to acquire a second amount of heat, and the second amount of heat may be an amount of heat absorbed by the kitchen air conditioner from the target object per unit time. The method comprises the steps of acquiring the cold quantity released by the kitchen air conditioner to a target object, detecting parameters such as relevant temperature of each place value of the kitchen air conditioner, air output and indoor temperature of a kitchen, calculating the cold quantity released by the kitchen air conditioner towards the target object in unit time according to the relevant parameters, and calculating the second heat quantity which can be obtained by the kitchen air conditioner from the target object in unit time according to the cold quantity.

The comparison module may be connected to the first acquisition module and the second acquisition module, and specifically, the comparison module may be configured to compare the first heat quantity with the second heat quantity; the control module can be connected with the comparison module, and the control module can adjust the refrigerating capacity provided by the kitchen air conditioner to the target object according to the comparison result. That is, by comparing the first heat quantity acquired by the target object and the second heat quantity absorbed by the target object, it is determined whether there is a balance between the first heat quantity acquired by the target object and the second heat quantity absorbed by the target object, and according to the determination result, whether to adjust the cooling capacity of the kitchen air conditioner is controlled.

The controller may control the kitchen air conditioner to maintain a current cooling capacity when the first heat captured by the target object and the absorbed second heat are substantially balanced, so that the captured and absorbed heat continues to be balanced for the target object.

When the first heat quantity acquired by the target object and the second heat quantity absorbed by the target object are unbalanced, if the first heat quantity transmitted by the heater acquired by the target object is significantly larger than the second heat quantity absorbed by the target object by the kitchen air conditioner, at this time, for the target object, the input of heat quantity is significantly larger than the output of heat quantity, in this state, the controller may increase the cooling quantity provided by the kitchen air conditioner to the target object, and specifically, the controller may control and increase the frequency of the compressor of the kitchen air conditioner, so that the cooling quantity delivered by the kitchen air conditioner to the target object is balanced with the heat quantity absorbed by the target object.

If the first heat quantity transmitted by the heater acquired by the target object is significantly lower than the second heat quantity absorbed by the kitchen air conditioner by the target object, at this time, for the target object, the heat output is significantly greater than the heat input, in this state, the controller can reduce the cooling quantity provided by the kitchen air conditioner to the target object, and the controller can control and reduce the frequency of the compressor, so that the cooling quantity delivered by the kitchen air conditioner to the target object is balanced with the heat quantity absorbed by the target object, and the kitchen space is maintained at the preset temperature or the cooking user is maintained in a more comfortable state.

According to the controller of the kitchen air conditioner, the comparison module compares the first heat transferred to the target object by the heater and the second heat absorbed by the kitchen air conditioner from the target object, and the controller adjusts the refrigerating capacity of the kitchen air conditioner to the target object according to the comparison result of the comparison module, so that the problem of energy bringing of the heater in a kitchen space can be solved, the refrigerating capacity of the kitchen air conditioner can be adjusted and changed according to the heat spread to the target object by the heater, the target object is always kept in a heat balance state, and the target object is kept at a preset temperature or in a comfortable state when the target object is achieved.

In some embodiments, the controller of the kitchen air conditioner may further include: the mode selection module can have at least two working modes and can be switched among a plurality of working modes, the working modes can comprise an unmanned heat balance mode and a heat radiation offset mode, and the mode selection module can be switched through manual selection and can also be automatically selected according to a detection result.

In a specific example, a kitchen air conditioner or a kitchen may be provided with a control button, the control button is connected with a mode selection module, and a user can realize the mode selection module to switch between an unmanned heat balance mode and a heat radiation counteracting mode by pressing the control button.

For another example, the controller may further include a person detection module, the person detection module is configured to detect whether there is a user in the kitchen space, when the person detection module detects that there is a user in the kitchen space, the mode selection module may be switched to a cancel heat radiation mode, and when the person detection module detects that there is no user in the kitchen space, the mode selection module may be switched to an unmanned heat balance mode.

It is changeable between the mode and offset the heat radiation mode through at unmanned heat balance mode in this embodiment, someone switches into and offsets the heat radiation mode in the kitchen, the kitchen air conditioner can offset and balance the heat of the heater that the culinary art user received, make the kitchen air conditioner can be along with the heat radiation of the heater that the culinary art user received, adjust the refrigeration capacity of kitchen air conditioner, feel uncomfortable because of the heat radiation of heater with avoiding the culinary art user, improve human travelling comfort, and compare in the temperature that reduces the kitchen space simply, the direct heat radiation that offsets and balance the culinary art user of this embodiment, can avoid the waste of the energy. When no person is in the kitchen, the mode is switched to the unmanned heat balance mode, so that the refrigerating capacity of the kitchen air conditioner can be adjusted along with the heat transmitted by the heater in the kitchen space after the temperature of the kitchen space is reached, the heat balance in the kitchen space is reached, and the kitchen air conditioner is always maintained in a heat balance state.

In one specific example of the present invention, the first obtaining module may be connected to the mode selecting module, and when the mode selecting module is the unmanned heat balance mode, the first obtaining module obtains the first heat amount as heat retention Q1 of the heater in the kitchen space, and the heat retention Q1 is equal to heat generation Q of the heater per unit time × at least one retention coefficient η _{Stagnation of qi} That is, the retention coefficient may be only one, and the retention coefficients may include two, three, four, and four or more. When the retention factor includes only one, the retention heat Q1 is the heat of formation Q × the retention factor η of the heater per unit time _{Stagnation of qi} When the retention coefficient includes two or more, the retention heat Q1 is equal to the heat of generation Q of the heater per unit time sequentially multiplied by a plurality of retention coefficients.

Further, the retention coefficient η _{Stagnation of qi} The method can comprise the following steps: eta _{Hysteresis 1} Wherein eta _{Hysteresis 1} ＝(1-η _{Effect 1} )，η _{Effect 1} Is the thermal efficiency of the heater; in particular η _{Effect 1} Indicating the proportion of heat that the heater absorbs from the food while heating the cooked food. In this embodiment, when the heater cooks and heats food, a part of the heat released by the heater is absorbed by the cooked food, and another part of the heat is dissipated to the environment, for example, the kitchen space. At this time, η of retention coefficient _{Hysteresis 1} ＝(1-η _{Effect 1} ). Therefore, the heater can be conveniently calculated to be used for heating and cookingHeat that is retained in the kitchen space beyond the cooking food.

Therein, it is understood that the heater may include different energy efficiency levels, and when the energy efficiency levels of the heater are different, the thermal efficiency of the heater is different, specifically, the energy efficiency η of the heater _{Effect 1} The method can be divided into primary energy efficiency, secondary energy efficiency, tertiary energy efficiency and the like.

In one example, the heater may be an integrated cooker, and when the integrated cooker heats, the thermal efficiency of the heater is the thermal efficiency of the integrated cooker. For the integrated cooker, the energy efficiency grades of the integrated cooker comprise primary energy efficiency, secondary energy efficiency, tertiary energy efficiency and the like, and the heat efficiency of the integrated cooker at each energy efficiency grade is unequal. Specifically, when the integrated stove is in first-level energy efficiency, the heat efficiency eta of the integrated stove _{Effect 1} More than or equal to 59 percent, and when the integrated stove has two-stage energy efficiency, the heat efficiency eta of the integrated stove _{Effect 1} 56% or more, when the integrated stove is three-stage energy efficiency, the heat efficiency eta of the integrated stove _{Effect 1} 53% or more.

In one specific example of the present invention, when the mode selection module is switched to the cancellation heat radiation mode, the first amount of heat that can be captured by the first capturing module may be an absorption amount Q3 of flame radiation of the heater, wherein the absorption amount Q3 ═ Tfire +273.15 ⁴ -(Tr+273.15) ⁴ ) F, in particular, Tfire is the temperature of the flame, Tr is the value of the body surface temperature of the cooking user, F is the emissivity. Thus, the radiation amount of the flame of the heater absorbed by the cooking user can be calculated.

In a specific example of the present invention, the first obtaining module may include: the infrared temperature sensor is used for detecting the flame temperature, so that the temperature of flame can be directly obtained through detection, the detection is convenient, and the result is accurate.

In a specific example of the present invention, the first obtaining module may include: the flowmeter can be used for detecting the flow value of the gas, and can detect the flow of the gas entering the combustor in unit time. The flow meter can be connected in series with the air inlet channel of the combustor, and the flow meter can be a wet flow meter. When the gas flow is detected, the value of the flow meter can be read for multiple times in unit time, and the read values are averaged, wherein the average value is the flow q of the burner in unit time. In one specific example, the flow counter value is read 12 times for the flow meter in 1 minute, and the 12 times are respectively: q1, q2, q3, q4 … q12, and a flow rate q ═ q1+ q2+ q3+ q4+ q5+ … + q11+ q12)/12, wherein the unit of the flow rate q is cubic meters per second.

In a specific example of the present invention, the second obtaining module may include: the temperature sensor comprises a first temperature sensor and a second temperature sensor, wherein the first temperature sensor can be used for detecting the air outlet temperature To of the kitchen air conditioner, and the second temperature sensor can be used for detecting the indoor temperature Tair in the kitchen space. Therefore, the air outlet temperature and the indoor temperature can be conveniently and quickly detected.

Further, the second quantity of heat may be an effective absorption heat Q2 of the kitchen air conditioner from the target object, the effective absorption heat Q2 being equal to a cold wind absorption heat Qc of the kitchen air conditioner multiplied by at least one wind retention ratio, the wind retention ratio being a ratio of the cold wind remaining in the kitchen; the wind retention ratio may be only one, or two, three, four, or more than four. When the wind retention ratio includes only one, the effective absorption heat Q2 is the cold wind absorption heat Qc × the wind retention ratio, and when the wind retention ratio includes two or more, the effective absorption heat Q2 is the cold wind absorption heat Qc multiplied by a plurality of wind retention ratios in order.

Because the kitchen space is not a completely closed space, when a smoke machine or an exhaust fan in the kitchen is opened, or when a door or a window of the kitchen is opened, a part of the refrigerating capacity of the kitchen air conditioner put into the kitchen space can be discharged to the space outside the kitchen space through the smoke machine, the exhaust fan, the door or the window and the like, and at the moment, the refrigerating capacity of the kitchen air conditioner provided for the kitchen space is smaller than that of the kitchen air conditioner. Therefore, the air-remaining ratio is a ratio at which cool air remains in the kitchen when the range hood, the exhaust fan, the door and/or the window, etc. are opened. It can be understood that the air-remaining proportion can be determined according to the specific conditions of the kitchen, the numerical value of the air-remaining proportion can be obtained by a manufacturer according to experiments, then a proportion table is obtained, and the controller looks up the table according to the conditions of the kitchen to obtain the corresponding air-remaining proportion. Here, it should be noted that the numerical value of the wind retention ratio itself is not the point of the invention of the present application.

Further, the cool air absorption heat is Qc, (Tair-To) × a Cp, specifically, h is an indoor unit air volume of the kitchen air conditioner, a is a latent heat coefficient, and Cp is a specific heat capacity of air. Wherein, when Cp is constant and equal to 1.005, a is 1+ η q, and η q is the latent heat rate of the cool air; when the humidity value of the cool air can be determined as d, a may be a constant of 1, Qc ═ Cpair-To Cpto ═ h, Cpto ═ 1.005 ═ To + (2500+1.84 ×) d, Cpair ═ 1.005 × (2500+1.84 ×) Tair + (2500+1.84 ×) d, Tair is the kelvin temperature, and To is also the kelvin temperature value.

It is understood that when a humidity factor (such as a humidity value d) is considered in the calculation of the specific heat capacity Cp of the air, the latent heat coefficient a does not need to be considered again, namely the latent heat coefficient a is 1; when the specific heat capacity Cp of air is constant at 1.005, i.e., the specific heat capacity Cp of air does not take into account the influence of humidity, the latent heat coefficient a needs to be taken into account in the latent heat rate including humid air, i.e., a is 1+ η q.

Because the specific heat capacity of water is different from that of air, the specific heat capacity of water is obviously smaller than that of air, and when certain humidity exists in cold air blown out by the kitchen air conditioner, the heat absorption capacity of water mist condensed in the cold air is obviously larger than that of cold air. Therefore, in the present embodiment, the accuracy of calculating the cold air heat absorption rate Qc of the kitchen air conditioner can be further improved by including the cooling capacity of the moisture (mist condensed in the cold air) in the cold air in the formula by absorbing the cold air with heat Qc ═ (Tair-To) × h × a Cp.

The kitchen air conditioner according to the third aspect of the present invention includes the controller of the kitchen air conditioner according to the second aspect of the present invention described above.

Other constructions of the kitchen air conditioner according to the embodiment of the present invention, such as an evaporator, a condenser, a compressor, etc., and operations thereof are known to those skilled in the art and will not be described in detail herein.

According to the kitchen air conditioner provided by the embodiment of the invention, by arranging the controller of the kitchen air conditioner provided by the embodiment of the second aspect, the problem of energy bringing of the heater in the kitchen space can be solved, the refrigerating capacity of the kitchen air conditioner can be adjusted and changed according to the heat quantity transmitted to the target object by the heater, so that the target object is always maintained in a heat balance state, the target object is maintained at a preset temperature or in a comfortable state during realization, and the overall performance of the kitchen air conditioner is improved.

A kitchen air conditioner according to one embodiment of the present invention will be described with reference to fig. 1 to 8.

A kitchen range is arranged in the kitchen, and natural gas or coal gas enters the kitchen range from an air inlet channel connected with the kitchen range.

The kitchen air conditioner comprises an air conditioner compressor, an air conditioner condenser, an air conditioner evaporator, an infrared temperature sensor, a wet flowmeter, a first temperature sensor and a second temperature sensor. Wherein, wet flowmeter is used for detecting the gas flow, and infrared temperature sensor is used for detecting the flame temperature, and first temperature sensor is used for detecting the air-out temperature To of air conditioner, and second temperature sensor is used for detecting the indoor temperature Tair in kitchen.

Natural gas or coal gas flows in from a pipeline, the gas quantity is detected through a wet-type flowmeter, and then the natural gas or the coal gas is ignited and combusted through the kitchen range to release heat for cooking. The cooking bench is provided with an infrared temperature sensor which can judge the temperature of the flame and further calculate the heat radiation quantity of the flame.

The kitchen air conditioner provided by the embodiment of the invention has the unmanned heat balance mode and the heat radiation counteracting mode, when no person exists in a kitchen, the kitchen air conditioner is switched to the unmanned heat balance mode, at the moment, the air outlet of the indoor unit of the kitchen air conditioner supplies air in the direction far away from the exhaust fan of the kitchen, when a person exists in the kitchen, the kitchen air conditioner is switched to the heat radiation counteracting mode, and at the moment, the air outlet of the kitchen air conditioner supplies air in the direction towards the heat radiation receiving direction of the human body.

The control flow of the kitchen air conditioner of the present invention in the unmanned heat balance mode and the offset heat radiation mode will be described below, respectively.

The control method of the kitchen air conditioner in the unmanned heat balance mode comprises the following steps:

the air outlet of the kitchen air conditioner is far away from the direction of the exhaust fan for supplying air;

wet flowmeter reads 12 times within 1 min: q1, q2 and q3 … q12, the flow rate of the burner in unit time is (q1+ q2+ … + q12)/12, and the unit is cubic meter per second;

calculating flame energy Q, Q × 37681 in kJ;

calculating the proportion eta of flame heat in the kitchen space _{Stagnation of qi} Wherein eta _{Stagnation of qi} ＝(1-η _{Effect 1} )(1-η _{Effect 2} ) According to the GB30720-2014 standard, the thermal efficiency value eta of the 1-level energy efficiency of the integrated cooker as a cooker _{Effect 1} Not less than 59 percent, and the heat efficiency value eta of 2-level energy efficiency _{Effect 1} Not less than 56 percent, ₃ thermal efficiency value eta of stage energy efficiency _{Effect 1} Not less than 53%; e.g. η of first order energy efficiency _{Effect 1} 0.59, η of second order energy efficiency _{Effect 1} 0.56, η of three-stage energy efficiency _{Effect 1} 0.53. Further, the heat recovery efficiency of a range hood is generally 90%, η _{Effect 2} ＝90％；

The heat of residence of the flame in the kitchen space Q1, Q1 ═ Qx (1-. eta.) (was calculated _{Effect 1} )×(1-η _{Effect 2} )；

The cold air absorption heat Qc of the kitchen air conditioner is calculated, specifically, the Qc is (Tair-To) h a Cp, Tair is the indoor temperature of the kitchen, To is the air outlet temperature of the air conditioner, h is the indoor unit air volume of the kitchen air conditioner, the corresponding indoor unit air volume h can be searched from a database according To the indoor unit rotating speed n, the unit of h is kg/s, a is a latent heat coefficient, and Cp is the specific heat capacity of air. When Cp is a constant of 1.005, a is 1+ eta q, and eta q is the latent heat rate of cold air; when the humidity value of the cold air is d, a can take a constant of 1, where Qc is (Tair × Cpair-To × Cpto) · h, Cpto is 1.005 × To + (2500+1.84 × To) · d, Cpair is 1.005 × Tair + (2500+1.84 × Tair) ·, Tair is the kelvin temperature, and To is also the kelvin temperature value;

calculating the effective refrigerating capacity Q2 of the kitchen air conditioner to the kitchen space, wherein Q2 is Qc x (1-eta C), and the (1-eta C) is the air retention proportion of cold air retained in the kitchen space;

comparing Q1 and Q2;

if Q1-Q2 is more than or equal to Q', the frequency of the compressor starts to be increased, and the speed is Xhz/min;

if Q2-Q1 is more than or equal to Q', the compressor starts to reduce the frequency and the speed is Yhz/min.

It should be noted that, in the unmanned heat balance mode, the effective cooling capacity Q2 of the kitchen air conditioner to the kitchen space is controlled to be larger than the heat retention Q1 of the flame, wherein Q2 is output by controlling the compressor frequency Fr control capacity, and the internal machine rotating speed n is changed along with the change of the compressor frequency. The compressor control key points are as follows: the compressor frequency varies between a maximum and a minimum value and a compressor resonance frequency point needs to be avoided.

The control method of the unmanned heat balance mode in the embodiment can adjust the capacity of the air conditioner along with the heat load of kitchen flames in the environment without people after the kitchen air conditioner reaches the temperature, so as to reach the degree of heat balance.

The control method of the kitchen air conditioner in the heat radiation counteracting mode comprises the following steps:

the air outlet of the air conditioner faces to the direction of receiving heat radiation by a human body;

measuring flame radiation temperature Tfire by using an infrared temperature sensor;

calculating related radiation coefficient F, calculating the radiation coefficient, calculating the effective radiation area of human body, flame radiation constant, average emissivity of human body, average emissivity of flame, etc., calculating the coefficient, and synthesizing the coefficient to obtain 8.0833 x 10 radiation coefficient ^-3 ；

Calculate the radiation energy Q3, Q3 ═ F ((Tfire +273.15) ⁴ -(Tr+273.15) ⁴ ) F, wherein Tr is a human body surface temperature; for example, when the flame temperature is 800 ℃, the radiation heat is 604.2W;

calculating the effective refrigerating capacity Q2 of the kitchen air conditioner to the user, wherein Q2 is Qc x (1-eta C), and the (1-eta C) is the air retention ratio of cold air retained in the kitchen;

comparing the Q2 and the Q3,

if Q3-Q2 is more than or equal to Q', the frequency of the compressor starts to be increased, and the speed is Xhz/min;

if Q2-Q3 is more than or equal to Q', the compressor starts to reduce the frequency and the speed is Yhz/min.

It should be noted that, in the offset heat radiation mode, the effective cooling capacity Q2 of the kitchen air conditioner to the kitchen space is controlled to be larger than the radiation energy Q3 of the flame, wherein Q2 is output by controlling the compressor frequency Fr control capacity, and the internal machine rotation speed n is changed along with the change of the compressor frequency. The compressor control key points are as follows: the compressor frequency varies between a maximum and a minimum value and a point of compressor resonant frequency needs to be avoided.

The control method of the heat radiation counteracting mode can absorb and counteract heat radiation received by a human body when people are in a kitchen, and improves the comfort of the human body.

In the kitchen space, after the room temperature reaches the temperature, because the gas is still burnt, the heat load is large, and the gas has variability, the kitchen air conditioner according to the embodiment of the invention can solve the problem that the flame energy of the kitchen range in the kitchen is brought out; when nobody in the kitchen, can be so that the kitchen space is in the heat balance state, when someone in the kitchen, can avoid the culinary art user to feel uncomfortable because of the heat radiation of heater, improve human travelling comfort, and compare in the temperature that reduces the kitchen space purely, through direct offset and balanced to the heat radiation of culinary art user, can avoid the waste of the energy.

In the description of the present invention, 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 an orientation or positional relationship 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 device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention.

In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

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. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A control method of a kitchen air conditioner is characterized by comprising the following steps:

acquiring first heat transmitted to a target object by a heater in unit time;

acquiring second heat quantity which is absorbed by a kitchen air conditioner from the target object in the unit time;

comparing the magnitude of the first heat quantity and the second heat quantity;

according to the comparison result, adjusting the refrigerating capacity of the kitchen air conditioner to the target object;

the galley air conditioner has an unmanned thermal balance mode in which the target object is a galley space, and in which,the first heat is a heat retention Q1 of the heater in the kitchen space, the heat retention Q1 is equal to a heat generation Q of the heater in the unit time multiplied by at least one retention factor

The retention coefficient

The method comprises the following steps:

and is and

=（1-

），

is the thermal efficiency of the heater;

the kitchen air conditioner has an offset heat radiation mode in which the target object is a cooking user, and in the offset heat radiation mode, the first heat is an absorption amount Q3 of flame radiation of the heater, that is, an amount of radiation of flame of the heater absorbed by the cooking user.

2. The method of claim 1, wherein the retention factor is when a cigarette maker is present in a kitchen

Further comprising:

and is and

=（1-

），

is the heat recovery efficiency of the cigarette machine.

3. The method according to claim 1, wherein when the heater is a burner, the obtaining of the first heat quantity of the heater propagated to the target object in unit time comprises the steps of:

acquiring the flow q of the burner in the unit time;

calculating the heat of formation Q, which is equal to the flow Q multiplied by the heating value of the fuel gas;

calculating the heat of retention Q1, the heat of retention Q1 being equal to the heat of formation Q multiplied by each of the retention coefficients

。

4. The method of claim 1, wherein the second amount of heat is an effective absorption heat Q2 of the kitchen air conditioner from the target object, the effective absorption heat Q2 being equal to a cold wind absorption heat Qc of the kitchen air conditioner multiplied by at least one wind retention ratio, the wind retention ratio being a ratio of the cold wind remaining in the kitchen.

5. The method according To claim 4, wherein the cool wind absorption heat Qc = (Tair-To) × a Cp, wherein Tair is an indoor temperature of a kitchen, To is an outlet air temperature of the kitchen air conditioner, h is an indoor air volume of the kitchen air conditioner, a is a latent heat coefficient, and Cp is a specific heat capacity of air;

wherein, when Cp is selected to be constant 1.005, a =1+ eta q, and eta q is latent heat rate of cold air;

when the humidity value d of the cold air can be obtained, a is constant 1, Qc = (Tair × Cpair-To × Cpto) × h, Cpto =1.005 × To + (2500+1.84 × To) × d, Cpair =1.005 × Tair + (2500+1.84 × Tair) × d, and Tair and To are both kelvin temperature values.

6. The method of claim 1,

the absorption Q3= ((Tfire +273.15) ⁴ -（Tr+273.15） ⁴ ) F, Tfire is the temperature of the flame, Tr is the body surface temperature of the cooking user, F is the emissivity.

7. The method of any one of claims 1-6, wherein the cooling capacity of the kitchen air conditioner is maintained when the difference between the first heat and the second heat is within a set range.

8. The method of any of claims 1-6, wherein the galley air conditioner is an inverter air conditioner, and wherein when the first heat exceeds the second heat by a first threshold, a compressor frequency of the galley air conditioner is increased;

when the second heat exceeds the first heat by a second threshold, reducing a compressor frequency of the galley air conditioner.

9. The method according to any one of claims 1-6, further comprising the steps of:

when a user is detected in a kitchen, the kitchen air conditioner is adjusted to wind towards the user;

when no user is detected in the kitchen, the air outlet direction of the kitchen air conditioner is far away from the air exhaust direction of the kitchen.

10. A controller of a kitchen air conditioner, comprising:

a first acquisition module for acquiring a first heat quantity propagated to a target object by a heater in a unit time;

a second acquisition module, wherein the first acquisition module is used for acquiring second heat quantity which is absorbed by the kitchen air conditioner from the target object in the unit time;

the comparison module is connected with the first acquisition module and the second acquisition module and is used for comparing the first heat quantity with the second heat quantity;

the control module is connected with the comparison module and used for adjusting the refrigerating capacity of the kitchen air conditioner on the target object according to the comparison result;

the mode selection module is provided with at least two switchable working modes, the working modes comprise an unmanned heat balance mode and a heat radiation offset mode, and the mode selection module is selected manually or through a detection result;

the first obtaining module is connected with the mode selecting module,

when the mode selection module is the unmanned heat balance mode, the first heat obtained by the first obtaining module is heat retention Q1 of the heater in the kitchen space, and the heat retention Q1 is equal to heat generation Q of the heater in the unit time multiplied by at least one retention coefficient

The retention coefficient

The method comprises the following steps:

and is and

=（1-

），

is the thermal efficiency of the heater;

when the mode selection module is in the offset heat radiation mode, the first heat quantity acquired by the first acquisition module is an absorption quantity Q3 of flame radiation of the heater, namely, a radiation quantity of flame of the heater absorbed by a cooking user.

11. The controller of kitchen air conditioner according to claim 10, wherein the absorption amount Q3= ((Tfire +273.15) ⁴ -（Tr+273.15） ⁴ ) F, Tfire is the temperature of the flame, Tr is the body surface temperature of the cooking user, F is the emissivity.

12. The controller of kitchen air conditioner according to claim 11, wherein said first obtaining module includes:

an infrared temperature sensor for detecting the flame temperature;

and the flowmeter is used for detecting the gas flow.

13. The controller of kitchen air conditioner according to claim 10, wherein said second obtaining module includes:

a first temperature sensor for detecting the outlet air temperature To of the kitchen air conditioner;

a second temperature sensor for detecting an indoor temperature Tair of the kitchen air conditioner;

the second heat amount is an effective absorption heat Q2 of the kitchen air conditioner from the target object, the effective absorption heat Q2 being equal to a cold wind absorption heat Qc of the kitchen air conditioner multiplied by at least one air retention ratio, the air retention ratio being a ratio of the cold wind remaining in the kitchen;

and the cold air absorption heat Qc = (Tair-To) × h × a Cp, wherein h is the air volume of the indoor unit of the kitchen air conditioner, a is the latent heat coefficient, and Cp is the specific heat capacity of air.

14. A kitchen air conditioner characterized by comprising a controller of the kitchen air conditioner according to any one of claims 10 to 13.