CN109990416B - Refrigerating system, refrigerating oil fume suction device and control method - Google Patents

Refrigerating system, refrigerating oil fume suction device and control method Download PDF

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Publication number
CN109990416B
CN109990416B CN201910279599.XA CN201910279599A CN109990416B CN 109990416 B CN109990416 B CN 109990416B CN 201910279599 A CN201910279599 A CN 201910279599A CN 109990416 B CN109990416 B CN 109990416B
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Prior art keywords
temperature
temperature difference
preset
indoor environment
pump
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CN109990416A (en
Inventor
秦宪
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/85Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0096Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater combined with domestic apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00Control inputs relating to system states
    • F24F2140/20Heat-exchange fluid temperature

Abstract

The invention provides a refrigeration system, a refrigeration oil fume absorption device and a control method, wherein the refrigeration system comprises: a reservoir; the accumulator is used for storing refrigerant; a pump body connected to the reservoir; an evaporator; a throttling mechanism is arranged between the pump body and the evaporator; a vacuum device connected to the evaporator; the vacuum device is suitable for being connected with external equipment, the refrigeration system is combined with the range hood to realize the cooling of a kitchen, and meanwhile, the interior of the range hood is cleaned.

Description

Refrigerating system, refrigerating oil fume suction device and control method
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a refrigeration system, refrigeration oil fume suction equipment and a control method.
Background
Summer is when the kitchen culinary art, and the kitchen temperature is higher, and the thermal efficiency who adds the gas-cooker is not high, produces a large amount of used heat and leads to the kitchen ambient temperature higher, and the kitchen as the culinary art place, and moisture such as its ground and top of a kitchen range is more, and the steam of culinary art process produces for the kitchen forms the environment of high temperature and high humidity. When people are in the high-temperature high-humidity environment, people feel very uncomfortable. As the standard of living increases, consumers desire to enhance the comfort of their environment while enjoying cooking. The prior art realizes reducing human surface temperature at kitchen installation air conditioner, but can not avoid the pollution of oil smoke to the evaporimeter, and during the culinary art, the door or the window of kitchen need be opened, and the combustion power of gas-cooker, must install the air conditioner of enough big refrigerating capacity and just can make kitchen ambient temperature reduce.
Disclosure of Invention
In view of this, the present invention provides a refrigeration system to solve the technical problems of easy pollution of the refrigeration equipment and excessive demand for refrigeration capacity in the existing kitchen refrigeration process.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a refrigeration system comprising:
a reservoir; the accumulator is used for storing refrigerant;
a pump body connected to the reservoir;
an evaporator;
a throttling mechanism is arranged between the pump body and the evaporator;
a vacuum device connected to the evaporator;
the vacuum device is suitable for being connected with external equipment.
From this, refrigerating system combines with the lampblack absorber, realizes the cooling in kitchen, also rinses the inside of lampblack absorber simultaneously to the device is compact light and handy, does not have the outer machine of similar air conditioner, and regards as the refrigerant with water, green, and the water consumption is few.
Optionally, the refrigerant is water.
Therefore, water is used as a refrigerant, and the refrigerant is green and environment-friendly and low in cost.
Optionally, the method further comprises: the first temperature sensor is used for detecting the current indoor environment temperature;
the second temperature sensor is used for detecting the temperature of the inner disc;
and the controller is used for controlling the operation mode of the refrigeration system.
Therefore, the current indoor environment temperature and the current inner disc temperature are obtained in real time, the flow regulation of the pump body is pre-judged, and the flow of the pump body is regulated by combining with the controller.
Optionally, still include the spray tube structure, the intake end of spray tube structure with the pump body is connected, the play water end of spray tube structure is suitable for setting up in external equipment.
The controller can wash the external equipment as required through the control to the pump body and spray tube structure, and simple and practical prolongs the service life of the external equipment.
Compared with the prior art, the kitchen refrigeration system has the following advantages:
the refrigeration system is combined with the range hood, so that the temperature of a kitchen is reduced, the interior of the range hood is cleaned, the device is compact and light, an external machine similar to an air conditioner is not arranged, water is used as a refrigerant, the environment is protected, and the water consumption is low.
The invention also aims to provide a refrigerating oil fume suction device to solve the problems that the refrigerating device is easy to pollute and the refrigerating capacity requirement is overlarge in the existing kitchen refrigerating process.
A refrigerated range hood device comprising any of the above refrigeration systems.
The invention also aims to provide a control method of the refrigerating system, so as to solve the problems that the refrigerating equipment is easy to pollute and the refrigerating capacity requirement is overlarge in the existing kitchen refrigerating process.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method of controlling a refrigeration system, comprising:
the refrigeration system acquires a current indoor environment temperature and an inner disc temperature of the evaporator corresponding to the current indoor environment temperature; judging according to the current indoor environment temperature and a preset indoor environment temperature, determining a preset temperature difference, and judging according to the temperature difference between the current indoor environment temperature and the inner disc temperature and the preset temperature difference to obtain a judgment result; and adjusting the flow of the pump body according to the judgment result.
Therefore, according to the ambient temperature and the temperature of the coil, the running condition of the refrigeration system is intelligently identified, the refrigeration capacity is intelligently adjusted through flow regulation, and the control is simple and reliable.
Optionally, the method further includes the step of judging whether the current indoor environment temperature is greater than the preset indoor environment temperature;
if the current indoor environment temperature is larger than or equal to the preset indoor environment temperature, comparing the temperature difference between the current indoor environment temperature and the inner disc temperature with a first preset temperature difference and a second preset temperature difference, and adjusting the flow of the pump body according to the comparison result;
and if the current indoor environment temperature is less than or equal to the preset indoor environment temperature, comparing the temperature difference between the current indoor environment temperature and the inner disc temperature with a third preset temperature difference and a fourth preset temperature difference, and adjusting the flow of the pump body according to the comparison result.
Therefore, the current indoor environment temperature is compared with the preset indoor environment temperature to be divided into two processing conditions, and the current indoor environment temperature is finely adjusted.
Optionally, judge current indoor ambient temperature with the difference in temperature of inner disc temperature and first difference in temperature and the second difference in temperature that predetermines size still includes:
when the temperature difference between the current indoor environment temperature and the inner disc temperature is larger than or equal to a first preset temperature difference, the flow of the pump body is increased;
if the second preset temperature difference is smaller than the temperature difference between the current indoor environment temperature and the inner disc temperature and smaller than the first preset temperature difference, the flow of the pump body is not adjusted;
when the temperature difference between the current indoor environment temperature and the inner disc temperature is less than or equal to a second preset temperature difference, the flow of the pump body is reduced;
wherein the second preset temperature difference is less than the first preset temperature difference.
From this, when current indoor ambient temperature was too high, through the difference in temperature of indoor ambient temperature and inner disc temperature and the comparison of predetermineeing the difference in temperature, carry out logic judgement fast, the heat load of accurate judgement system, and then accurate control.
Optionally, judge current indoor ambient temperature with the difference in temperature of inner disc temperature and the third difference in temperature and the fourth difference in temperature that predetermines size still includes:
when the temperature difference between the current indoor environment temperature and the inner disc temperature is larger than or equal to a third preset temperature difference, the flow of the pump body is increased;
if the fourth preset temperature difference is smaller than the temperature difference between the current indoor environment temperature and the inner disc temperature and smaller than the third preset temperature difference, the flow of the pump body is not adjusted;
when the temperature difference between the current indoor environment temperature and the inner disc temperature is less than or equal to a fourth preset temperature difference, the flow of the pump body is reduced
Wherein the fourth preset temperature difference is less than the third preset temperature difference.
From this, when current ambient temperature crossed low, through the difference in temperature of indoor ambient temperature and inner disc temperature and the comparison of predetermineeing the difference in temperature, carry out logic judgement fast, the heat load of accurate judgement system, and then accurate control.
Optionally, the control method further includes:
setting the refrigerating air volume of the current refrigerating system;
setting flow regulation cycle time;
and adjusting the flow regulating quantity of the pump body according to the refrigerating air quantity, the temperature difference between the current indoor environment temperature and the inner disc temperature and the period time.
Optionally, the adjusting the flow rate of the pump body further includes: adjusting the adjustment K of the pump body flow according to the following relation:
K=CρV(t-ΔT)/Qr,
wherein V is the refrigerating air quantity of the refrigerating system and the unit is m3/h;
Rho is an air density value;
c is the specific heat capacity of air;
qr is latent heat;
t is the temperature difference between the current indoor environment temperature and the inner disc temperature, and the unit is;
Δ T is a temperature correction in degrees Celsius.
Therefore, thermodynamic and periodic derivative logic algorithms are adopted for control, the heat load of the system is accurately judged, and then accurate control is achieved.
Optionally, the control method further includes a cleaning step: and receiving a control signal, and cleaning the external equipment according to the control signal.
Through the cleaning step, the user can conveniently clean the external equipment, and the cleaning device is simple and practical.
Compared with the prior art, the air conditioner dehumidification control method has the following advantages:
the control method of the refrigeration system intelligently identifies the running condition of the refrigeration system according to the environment temperature and the inner disc temperature, intelligently adjusts the flow of the pump body to adjust the refrigerating capacity, and is simple and reliable to control.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a refrigeration system according to the present invention;
FIG. 2 is a flow chart of an embodiment of the control method;
FIG. 3 is a flowchart illustrating an embodiment of step S2 in FIG. 2;
FIG. 4 is a flowchart illustrating an embodiment of step S211 shown in FIG. 3;
fig. 5 is a flowchart illustrating an embodiment of step S212 in fig. 3.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the kitchen refrigeration system, the pump body pumps out the refrigerant from the liquid storage device, the refrigerant enters the evaporator through the throttling mechanism, the vacuum device is started, the vacuum device is used for keeping the evaporator in a low-pressure state, the refrigerant enters the low-pressure area of the evaporator, evaporates in the evaporator and exchanges heat outside, so that the temperature of the kitchen environment is reduced, the refrigerant is discharged into the range hood through the vacuum device after being changed into low-pressure steam, the low-pressure steam continues absorbing heat and is changed into normal-pressure steam, the temperature inside the range hood is reduced in the heat absorbing process, the reliability of a motor of the range hood is facilitated, meanwhile, in the temperature reduction process, the steam in the air is condensed and adhered to an impeller of the range hood, the impeller is cleaned, so that oil stains on the impeller are dissolved and flow into an oil cup, and simultaneously atomized water drops are brought out to the environment, so that the temperature of the kitchen environment is reduced and, therefore, the invention realizes the cooling of the kitchen based on the principle and simultaneously cleans the interior of the range hood.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, a refrigeration system includes:
a liquid reservoir 1; the accumulator 1 is used for storing refrigerant; a pump body 2 connected to the reservoir 1; an evaporator 3; a throttling mechanism 4 is arranged between the pump body 2 and the evaporator 3; a vacuum device 5, wherein the vacuum device 5 can be connected with the evaporator 3 through a connecting air pipe 6, and the vacuum device 5 is used for keeping the evaporator 3 in a low-pressure state; the vacuum device 5 is adapted to be connected to a kitchen appliance 7.
The refrigerant carries out the heat transfer with the external world in evaporation process to reduce the kitchen temperature, preferably in this embodiment water, it is corresponding, the pump body is the water pump, and water is as the refrigerant, green, and is with low costs, and the specific heat capacity is big, can absorb more heat under the same difference in temperature.
Throttling mechanism is with rapid atomizing of cold water, enlarge the area of contact of water and evaporimeter, water is evaporated rapidly, thereby improve the heat exchange efficiency of evaporimeter and external environment, throttling mechanism can be the orifice, also can adopt atomizing nozzle, ultrasonic atomization technique, the compound atomizing technique of medium, centrifugal atomizing technique, rotation type atomizing technique etc. also can adopt electronic ultrasonic atomization device that produces, it can realize producing meticulous tiny cold water granule and promote heat transfer area equally, preferred orifice in this embodiment, it is durable to have simple structure, economic class advantages such as the processing cost is low, the installation is used simply reliably, orifice technical maturity is popularized easily and is mastered, and be applicable to multiple medium, such as liquid, gas etc..
Kitchen equipment can be cooking utensils, oven or smoke extractor, preferably in this embodiment is the smoke extractor, and the oil smoke pollution of smoke extractor is comparatively serious, and vacuum apparatus and lampblack absorber are connected, and exhaust low pressure steam enters into the lampblack absorber among the vacuum apparatus, and low pressure steam continues the heat absorption and becomes ordinary pressure steam, and at the in-process to the inside cooling of lampblack absorber, the steam of air condenses and the adhesion on the impeller of lampblack absorber, is favorable to getting rid of and washing of the inside oil stain of lampblack absorber.
The standard atmospheric pressure is 101.325kPa, the pressure in the evaporator is kept within the range of 1-3 kPa, the corresponding saturation temperature is 5-25 ℃, under the condition of pressure ratio which can be borne by equipment, the refrigerating capacity of a refrigerating system and the indoor environment are ensured to have larger temperature difference, heat exchange with the outside is facilitated, the evaporator and the external environment have larger pressure difference, water atomized by a throttling mechanism enters the low-pressure environment in the evaporator from the normal-pressure environment and is rapidly evaporated, and the water exchanges heat with the external environment, so that the temperature of a kitchen is reduced.
The refrigeration system also comprises a first temperature sensor for detecting the current indoor environment temperature; the second temperature sensor is used for detecting the temperature of the inner disc; the controller is used for controlling refrigerating system's operation, controller respectively with first temperature sensor and second temperature sensor electric connection, it is concrete, the controller respectively with first temperature sensor and second temperature sensor pass through the electric wire and be connected, signal transmission is stable, avoid disturbing, the controller can also with the organic combination of lampblack absorber, the lampblack absorber is started, then refrigerating system starts, refrigerating system also can be opened or closed by oneself as required, and can be different according to ambient temperature, realize refrigeration/dehumidification, the lampblack absorber washs etc..
The refrigerating system further comprises a spray pipe structure, the water inlet end of the spray pipe structure is connected with the pump body, an electromagnetic valve is arranged on the spray pipe structure and used for receiving a signal of the controller to control the spray pipe structure to be opened or closed, and the water outlet end of the spray pipe structure is suitable for being arranged around an impeller of the range hood and used for cleaning the impeller.
The controller can wash the oil smoke exhauster impeller according to the requirement through the control to the pump body and the spray pipe structure, is simple and practical, and prolongs the service life of the oil smoke exhauster.
The vacuum device is used for keeping the evaporator in a low-pressure state, and a low-pressure area is pumped in the evaporator, so that water is evaporated at a low temperature, heat is exchanged with the outside, the ambient temperature is reduced, and low-pressure operation of the evaporator is realized.
A refrigerated range hood device comprises the refrigeration system. The refrigeration oil smoke absorption equipment of this embodiment, can effectually reduce the interior oil smoke of kitchen and reduce the whole ambient temperature in the kitchen, and then improve user's comfort level.
Referring to fig. 2 to 5, a control method of a refrigeration system includes the steps of:
s1, acquiring the current indoor environment temperature and acquiring the inner disc temperature of the evaporator 3 corresponding to the current indoor environment temperature;
according to the ambient temperature and the coil temperature of the evaporator, the running condition of the refrigeration system is intelligently identified, the flow is intelligently adjusted to adjust the refrigerating capacity, and the control is simple and reliable.
S2, judging according to the current indoor environment temperature and a preset indoor environment temperature, and determining a preset temperature difference;
and determining the preset temperature difference to be judged next step according to the judgment result of the current indoor environment temperature and the preset indoor environment temperature.
S3, judging according to the temperature difference between the current indoor environment temperature and the inner disc temperature and a preset temperature difference to obtain a judgment result;
the judgment is carried out according to the current indoor environment temperature and the preset indoor environment temperature, and the method also comprises the following steps,
s21, judging whether the current indoor environment temperature is greater than the preset indoor environment temperature; preferably, the preset value of the indoor environment temperature range is as follows: 27-35 ℃. The temperature set value in the range can effectively demarcate the indoor environment temperature, and effectively control the refrigeration operation of the oil fume suction system according to the environment temperatures in the two ranges, thereby providing a good and comfortable environment for people. The range given by the embodiment is an optimal range value based on human body, and can be set by the user according to the model of the oil fume suction device or different comfort levels of different users, so that the functions of the invention can be achieved.
S211, if the current indoor environment temperature is larger than or equal to a preset indoor environment temperature, comparing the temperature difference between the current indoor environment temperature and the inner disc temperature with a first preset temperature difference and a second preset temperature difference;
judging the current indoor environment temperature and the temperature difference of the inner disc temperature, the first preset temperature difference and the second preset temperature difference, and further comprising the following steps:
s2111, if the temperature difference between the current indoor environment temperature and the inner disc temperature is larger than or equal to a first preset temperature difference, the flow of the pump body is increased; because the indoor ambient temperature is too high, lead to human comfort level and then reduce, so need the flow increase of the pump body, and then reduce indoor ambient temperature.
S2112, when the second preset temperature difference is smaller than the temperature difference between the current indoor environment temperature and the inner disc temperature and smaller than the first preset temperature difference, the flow of the pump body is not adjusted; because the current temperature accords with the preset temperature range, the flow of the pump body is not regulated.
S2113, if the temperature difference between the current indoor environment temperature and the inner disc temperature is less than or equal to a second preset temperature difference, reducing the flow of the pump body; because the current temperature is lower than the preset temperature, the flow rate of the pump body can be gradually reduced, so that the energy consumption of the whole system is reduced.
Wherein the second preset temperature difference is less than the first preset temperature difference. Preferably, the first preset temperature difference range value is 8-20 ℃; the second preset temperature difference range value is 3-15 ℃; the setting of the first preset temperature range difference and the second preset temperature range difference is a preferred range value of the present embodiment, and can also be set by itself according to the model of the oil removing equipment leaving the factory or the comfort level of the human body. The scope of the invention can be achieved.
S212, if the current indoor environment temperature is not greater than the preset indoor environment temperature, comparing the current indoor environment temperature with the temperature difference of the inner disc temperature, a third preset temperature difference and a fourth preset temperature difference.
Judging the current indoor environment temperature and the temperature difference of the inner disc temperature, the third preset temperature difference and the fourth preset temperature difference, and further comprising the following steps:
s2121, if the temperature difference between the current indoor environment temperature and the inner disc temperature is larger than or equal to a third preset temperature difference, the flow of the pump body is increased; because the indoor ambient temperature is less than preset indoor environment, but its whole high temperature leads to human comfort level and then reduces, so need increase the flow of the pump body, and then improve human comfort level.
S2122, if the fourth preset temperature difference is smaller than the temperature difference between the current indoor environment temperature and the inner disc temperature and smaller than the third preset temperature difference, the flow of the pump body is not adjusted; because the current temperature accords with the preset temperature range, the flow of the pump body is not regulated.
S2123, if the temperature difference between the current indoor environment temperature and the inner disc temperature is less than or equal to a fourth preset temperature difference, reducing the flow of the pump body; because the indoor ambient temperature is lower than the preset indoor environment, and the overall temperature is too low, the energy consumption is further prevented, and the flow of the pump body is reduced.
Wherein the fourth preset temperature difference is less than the third preset temperature difference. Preferably, the third preset temperature difference range value is 5-15 ℃; the fourth preset temperature difference range value is 3-12 ℃; the setting of the third preset temperature range difference and the fourth preset temperature range difference is a preferred range value of this embodiment, and can also be set by itself according to the model of the oil removing equipment leaving the factory or the comfort level of the human body. The scope of the invention can be achieved.
And S4, adjusting the flow rate of the pump body according to the judgment result.
The control method of the refrigeration system further comprises the following steps:
setting the refrigerating air volume of the current refrigerating system; the refrigerating air volume is set according to the running condition and the requirement of the refrigerating system, preferably, the refrigerating air volume can be set to be 100m3/h-500m3H is used as the reference value. The refrigerating air quantity in the range can quickly and effectively reduce the overall environment temperature.
Setting flow regulation cycle time; preferably, the cycle time can be set to be 30s-60s, so that the indoor environment temperature can be accurately adjusted under the condition of permission of equipment load, and the energy consumption is low. And the system can be set according to the actual model of the system.
And adjusting the flow regulating quantity of the pump body according to the refrigerating air quantity, the temperature difference between the current indoor environment temperature and the inner disc temperature and the period time.
The control adopts thermodynamics and periodic derivative logic algorithms to accurately judge the heat load of the system, so as to accurately control, intelligently identify the running condition of the refrigeration system according to the ambient temperature and the temperature of the coil, intelligently adjust the flow to adjust the refrigeration capacity, and the control is simple and reliable; determining the cycle time according to the flow regulation period; and adjusting the flow regulating quantity of the pump body according to the refrigerating air quantity, the temperature difference between the current indoor environment temperature and the inner disc temperature and the period time.
The control method further comprises the following cleaning steps: and receiving a control signal, and cleaning the external equipment according to the control signal.
Through the cleaning step, the user can conveniently clean the external equipment, and the cleaning device is simple and practical.
According to the refrigeration amount of wind, cycle time with the difference in temperature of current indoor ambient temperature and inner disc temperature adjusts the flow control volume of the pump body, include: adjusting the adjustment K of the pump body flow according to the following relation:
K=CρV(t-ΔT)/Qr,
wherein V is the refrigerating air quantity of the refrigerating system and the unit is m3/h;
Rho is the air density value and is 1.29kg/m3
C is the air specific heat capacity kj/(kg, DEG C), and the value is 1.1kj/(kg, DEG C);
qr is latent heat quantity, kj/kg, and the value is 2257 kj/kg;
t is the temperature difference between the current indoor environment temperature and the inner disc temperature, and the unit is;
Δ T is a temperature correction value in units of ° c, preferably Δ T of 3 ℃.
In this embodiment, the regulating variable with pump body flow sets for there are multiple conditions to through the flow control volume of calculating every condition, can effectively improve the regulation control accuracy and the comfort level of pump body flow, and this embodiment is through according to ambient temperature and coil pipe temperature, intelligent recognition refrigerating system's behavior, intelligent regulation flow control refrigeration volume, and control is simple reliable.
This embodiment is described in detail with reference to specific implementation data, and the specific process is as follows:
in a refrigeration mode, 1min is taken as an adjusting period, a temperature sensor is adopted to detect multiple current indoor environment temperatures and inner disc temperatures, through detection, the current environment temperature is 32 ℃, the inner disc temperature is 20 ℃, the temperature difference delta T ℃ ═ TH ℃ -TA ℃ (inner disc temperature) is 12 ℃, a first preset temperature difference is set to be 10 ℃, and the temperature difference is higher than the first preset temperature difference at the moment, so that the water quantity is insufficient, and the flow needs to be adjusted through an adjusting water pump. At the moment, the regulating quantity K of the water pump flow is equal to Crho V (T-delta T)/Qr,
wherein the refrigerating air volume V of the refrigerating system is 500m3/h;
Rho is the air density value of 1.29kg/m3
C is the air specific heat capacity of 1.1kj/(kg, DEG C);
qr is latent heat of 2257 kj/kg;
it was calculated that when K is 0.628kg/h and Δ t cycle time is 1min, 10.5g of water is added in one minute.
And adjusting according to the calculated pump body adjustment quantity to make up the cold quantity in the cooling process.
Under the refrigeration mode, 1min is taken as an adjusting period, a temperature sensor is adopted to detect multiple current indoor environment temperatures and inner disc temperatures, through detection, the current environment temperature is 29 ℃, the inner disc temperature is 24 ℃, the temperature difference delta T ℃ ═ TH ℃ -TA ℃ (inner disc temperature) is 5 ℃, the fourth preset temperature difference is set to be 8 ℃, and the fourth preset temperature difference is lower than the fourth preset temperature difference at the moment, so that the water quantity is large, and the flow needs to be adjusted through the adjusting water pump. At the moment, the regulating quantity K of the water pump flow is equal to Crho V (T-delta T)/Qr,
wherein the refrigeration systemThe refrigerating air volume V is 500m3/h;
Rho is the air density value of 1.29kg/m3
C is the air specific heat capacity of 1.1kj/(kg, DEG C);
qr is latent heat of 2257 kj/kg;
it was calculated that when K is 0.943kg/h and Δ t cycle time is 1min, 15.7g water is reduced in one minute.
And adjusting according to the calculated pump body adjustment quantity, and reducing the cold quantity in the cooling process.
The refrigerating system of this embodiment adopts above-mentioned refrigerating system's control method, and it is through detecting current indoor ambient temperature and inner disc temperature, then, adjusts pump body flow according to the difference in temperature and the difference in temperature that predetermines of current indoor ambient temperature and inner disc temperature, can realize the accurate control of flow, and control is simple reliable.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (11)

1. A refrigeration system, comprising:
a reservoir (1); the accumulator (1) is used for storing refrigerant;
a pump body (2) connected with the reservoir (1);
an evaporator (3);
a throttling mechanism (4) is arranged between the pump body (2) and the evaporator (3);
a vacuum device (5), wherein the vacuum device (5) is connected with the evaporator (3), and the vacuum device (5) is used for keeping the evaporator (3) in a low-pressure state;
the vacuum device (5) is adapted to be connected to a kitchen appliance (7);
the spraying pipe structure, the end of intaking of spraying pipe structure with the pump body (2) are connected, the play water end of spraying pipe structure is suitable for the setting and is in kitchen equipment (7), and right kitchen equipment (7) wash.
2. The refrigerant system as set forth in claim 1, wherein said refrigerant is water.
3. The refrigerant system as set forth in claim 1, further including:
the first temperature sensor is used for detecting the current indoor environment temperature;
a second temperature sensor for detecting the inner pan temperature of the evaporator (3);
and the controller is used for controlling the operation mode of the refrigeration system.
4. A refrigerated range hood device comprising a refrigeration system as claimed in any one of claims 1 to 3.
5. A control method of a refrigerated range hood device according to claim 4,
the refrigeration system acquires the current indoor environment temperature and the inner disc temperature of the evaporator (3) corresponding to the current indoor environment temperature;
judging according to the current indoor environment temperature and a preset indoor environment temperature, and determining a preset temperature difference;
judging according to the temperature difference between the current indoor environment temperature and the inner disc temperature and a preset temperature difference to obtain a judgment result;
and adjusting the flow of the pump body (2) according to the judgment result.
6. The control method according to claim 5, wherein the determining is performed based on the current indoor ambient temperature and a preset indoor ambient temperature, further comprising the steps of determining whether the current indoor ambient temperature is greater than the preset indoor ambient temperature,
if the current indoor environment temperature is larger than or equal to the preset indoor environment temperature, comparing the temperature difference between the current indoor environment temperature and the inner disc temperature with a first preset temperature difference and a second preset temperature difference, and adjusting the flow of the pump body (2) according to the comparison result;
if the current indoor environment temperature is less than or equal to the preset indoor environment temperature, comparing the temperature difference between the current indoor environment temperature and the inner disc temperature with a third preset temperature difference and a fourth preset temperature difference, and adjusting the flow of the pump body (2) according to the comparison result.
7. The control method according to claim 6, wherein the determining of the temperature difference between the current indoor environment temperature and the inner panel temperature and the first preset temperature difference and the second preset temperature difference further comprises:
when the temperature difference between the current indoor environment temperature and the inner disc temperature is larger than or equal to a first preset temperature difference, the flow of the pump body is increased;
if the second preset temperature difference is smaller than the temperature difference between the current indoor environment temperature and the inner disc temperature and smaller than the first preset temperature difference, the flow of the pump body (2) is not adjusted;
when the temperature difference between the current indoor environment temperature and the inner disc temperature is less than or equal to a second preset temperature difference, the flow of the pump body (2) is reduced;
wherein the second preset temperature difference is less than the first preset temperature difference.
8. The control method according to claim 6 or 7, wherein the determining of the temperature difference between the current indoor environment temperature and the inner panel temperature and the third preset temperature difference and the fourth preset temperature difference further comprises:
when the temperature difference between the current indoor environment temperature and the inner disc temperature is larger than or equal to a third preset temperature difference, the flow of the pump body (2) is increased;
if the fourth preset temperature difference is smaller than the temperature difference between the current indoor environment temperature and the inner disc temperature and smaller than the third preset temperature difference, the flow of the pump body (2) is not adjusted;
when the temperature difference between the current indoor environment temperature and the inner disc temperature is less than or equal to a fourth preset temperature difference, the flow of the pump body (2) is reduced;
wherein the fourth preset temperature difference is less than the third preset temperature difference.
9. The control method according to claim 5, characterized by further comprising:
setting the refrigerating air volume of the current refrigerating system;
setting flow regulation cycle time;
and adjusting the flow regulating quantity of the pump body (2) according to the refrigerating air quantity, the temperature difference between the current indoor environment temperature and the inner disc temperature and the cycle time.
10. The control method of claim 9, wherein said adjusting the magnitude of the pump body flow rate further comprises: adjusting the adjustment K of the pump body flow according to the following relation:
K=CρV(t-ΔT)/Qr,
wherein V is the refrigerating air quantity of the refrigerating system and the unit is m3/h;
Rho is an air density value;
c is the specific heat capacity of air;
qr is latent heat;
t is the temperature difference between the current indoor environment temperature and the inner disc temperature, and the unit is;
Δ T is a temperature correction in degrees Celsius.
11. The control method according to claim 10, characterized by further comprising a washing step of: and receiving a control signal, and cleaning the kitchen equipment according to the control signal.
CN201910279599.XA 2019-04-09 2019-04-09 Refrigerating system, refrigerating oil fume suction device and control method Active CN109990416B (en)

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Citations (9)

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JPH0599447A (en) * 1991-10-04 1993-04-20 Sadajiro Sano Steam discharge room cooling system
CN1111341A (en) * 1995-02-08 1995-11-08 陈启松 Hydraulic refrigerator
CN2754023Y (en) * 2004-11-17 2006-01-25 罗险峰 Compressed air injection type refrigerating machine set
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CN203421766U (en) * 2013-08-20 2014-02-05 方军 Cooling synergistic type range hood
CN105276724A (en) * 2014-07-03 2016-01-27 徐建宁 Vertical vacuum air conditioner
WO2018143573A1 (en) * 2017-02-03 2018-08-09 주식회사 성지공조기술 Vacuum cooler-integrated refrigerator
CN109442690A (en) * 2018-10-29 2019-03-08 珠海格力电器股份有限公司 A kind of air conditioning control method, device, storage medium and air-conditioning

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0599447A (en) * 1991-10-04 1993-04-20 Sadajiro Sano Steam discharge room cooling system
CN1111341A (en) * 1995-02-08 1995-11-08 陈启松 Hydraulic refrigerator
CN2754023Y (en) * 2004-11-17 2006-01-25 罗险峰 Compressed air injection type refrigerating machine set
CN201866873U (en) * 2010-11-17 2011-06-15 杨清平 Direct-emission type vacuum refrigeration air-conditioner
CN202195620U (en) * 2011-08-03 2012-04-18 卓卫民 Low energy consumption refrigerating system
CN203421766U (en) * 2013-08-20 2014-02-05 方军 Cooling synergistic type range hood
CN105276724A (en) * 2014-07-03 2016-01-27 徐建宁 Vertical vacuum air conditioner
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