CN110207357B - Total heat exchanger and control method and device thereof - Google Patents
Total heat exchanger and control method and device thereof Download PDFInfo
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- CN110207357B CN110207357B CN201910482085.4A CN201910482085A CN110207357B CN 110207357 B CN110207357 B CN 110207357B CN 201910482085 A CN201910482085 A CN 201910482085A CN 110207357 B CN110207357 B CN 110207357B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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Abstract
The invention discloses a total heat exchanger and a control method and a device thereof, wherein the method comprises the following steps: acquiring a first indoor temperature of an indoor environment and a first outlet air temperature of the total heat exchanger; and adjusting the gears of a fresh air fan and an exhaust fan in the total heat exchanger according to the first indoor temperature and the first air outlet temperature. The method enables the gears of the fresh air fan and the exhaust fan of the total heat exchanger to be adaptive to the first indoor temperature and the first air outlet temperature, improves the heat exchange efficiency of the total heat exchanger, and avoids condensation on the body of the total heat exchanger and the indoor air supply pipeline of the total heat exchanger.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a total heat exchanger and a control method and device thereof.
Background
The total heat exchanger is a product which is used for filtering, purifying and exchanging heat of outdoor fresh air, then sending the fresh air into a room, and meanwhile, exchanging heat of indoor dirty air, and then discharging the dirty air to the outside. The total heat exchanger can perform heat exchange treatment on dirty air exhausted from the room and fresh air fed into the room through the total heat exchange core body in the total heat exchanger, so that the total heat exchanger can perform ventilation and can keep the temperature and humidity in the room stable. However, in the process of heat exchange treatment of the total heat exchange core, condensation often occurs on the body of the total heat exchanger and the indoor air supply pipeline, and the condensation accumulated for a long time can form water drops or seep into the total heat exchanger, thereby generating potential safety hazards and reducing the service life of components in the total heat exchanger, or forming the phenomenon of pipeline water blowing, and affecting the use of users.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, a first object of the present invention is to provide a method for controlling a total heat exchanger, which can prevent condensation from occurring on the body of the total heat exchanger and the indoor air supply duct thereof.
A second object of the present invention is to provide a control device for a total heat exchanger.
A third object of the present invention is to propose a total heat exchanger.
A fourth object of the invention is to propose an electronic device.
A fifth object of the present invention is to propose a computer-readable storage medium.
In order to achieve the above object, according to an embodiment of a first aspect of the present invention, there is provided a method for controlling an enthalpy exchanger, including:
acquiring a first indoor temperature of an indoor environment and a first outlet air temperature of the total heat exchanger;
and adjusting the gears of a fresh air fan and an exhaust fan in the total heat exchanger according to the first indoor temperature and the first air outlet temperature.
According to an embodiment of the present invention, the adjusting the gears of the fresh air fan and the exhaust air fan in the air exchanging system according to the first indoor temperature and the first outlet air temperature includes:
acquiring a first absolute value of a difference value between the first indoor temperature and the first outlet air temperature;
and adjusting the gears of a fresh air fan and an exhaust fan in the total heat exchanger according to the first absolute value.
According to an embodiment of the present invention, the adjusting the gears of the fresh air fan and the exhaust air fan in the total heat exchanger according to the magnitude of the first absolute value includes:
detecting and determining that the first absolute value is greater than or equal to a first temperature threshold value, controlling the new air fan to downshift, and keeping the gear of the exhaust air fan unchanged; or
And detecting and determining that the first absolute value is smaller than the first temperature threshold value, and keeping the gear of the fresh air fan and the gear of the exhaust fan unchanged.
According to an embodiment of the present invention, after the gear of the fresh air blower and the gear of the exhaust air blower are both kept unchanged, the method further includes:
acquiring a second indoor temperature of an indoor environment and a second air outlet temperature of the total heat exchanger at intervals of preset duration;
acquiring a second absolute value of a difference value between the second indoor temperature and the second outlet air temperature;
and detecting and determining that the second absolute value is smaller than a second temperature threshold value, controlling the fresh air fan to be upshifted, and keeping the gear of the exhaust fan unchanged, wherein the second temperature threshold value is smaller than the first temperature threshold value.
According to an embodiment of the present invention, further comprising:
detecting and determining that the second absolute value is greater than or equal to the second temperature threshold;
detecting and determining that the second absolute value is smaller than a third temperature threshold value, and controlling to keep the gear of the fresh air fan and the gear of the exhaust fan unchanged; wherein the third temperature threshold is greater than the first temperature threshold; alternatively, the first and second electrodes may be,
and detecting and determining that the second absolute value is greater than or equal to the third temperature threshold value, controlling the new air fan to downshift, and keeping the gear of the exhaust air fan unchanged.
According to an embodiment of the present invention, after controlling the new air blower to shift up and keeping the shift of the exhaust air blower unchanged, the method further includes:
obtaining a third indoor temperature of an indoor environment and a third outlet air temperature of the total heat exchanger at intervals of preset duration;
acquiring a third absolute value of a difference value between the third indoor temperature and the third outlet air temperature;
and detecting and determining that the third absolute value is smaller than a fourth temperature threshold, controlling the fresh air fan to shift up, and keeping the gear of the exhaust fan unchanged, wherein the fourth temperature threshold is smaller than the first temperature threshold and larger than the second temperature threshold.
According to an embodiment of the present invention, further comprising:
detecting and determining that the third absolute value is greater than or equal to the fourth temperature threshold value and smaller than the third temperature threshold value, and controlling to keep the gear of the fresh air fan and the gear of the exhaust fan unchanged; or
And detecting and determining that the third absolute value is greater than or equal to the fourth temperature threshold value and the third absolute value is greater than or equal to the third temperature threshold value, controlling the fresh air fan to downshift, and keeping the gear of the exhaust air fan unchanged.
According to an embodiment of the present invention, before adjusting the gear of the fresh air blower and the gear of the exhaust air blower according to the magnitude of the first absolute value, the method includes:
identifying a target temperature range to which the first indoor temperature belongs, and determining the first temperature threshold, and/or the second temperature threshold, and/or the third temperature threshold, and/or the fourth temperature threshold according to the target temperature range.
The control method of the total heat exchanger provided by the embodiment of the invention obtains a first indoor temperature of an indoor environment and a first outlet air temperature of the total heat exchanger; furthermore, according to the first indoor temperature and the first air outlet temperature, the gears of the fresh air fan and the exhaust fan in the total heat exchanger are adjusted so as to avoid condensation on the body of the total heat exchanger and the indoor air supply pipeline thereof. The method enables the gears of the fresh air fan and the exhaust fan of the total heat exchanger to be adaptive to the first indoor temperature and the first air outlet temperature, improves the heat exchange efficiency of the total heat exchanger, and avoids condensation on the body of the total heat exchanger and the indoor air supply pipeline of the total heat exchanger.
In a second aspect, an embodiment of the present invention provides a control device for an enthalpy exchanger, where the device includes:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring a first indoor temperature of an indoor environment and a first air outlet temperature of the total heat exchanger;
and the control module is used for adjusting the gears of the fresh air fan and the exhaust fan in the total heat exchanger according to the first indoor temperature and the first air outlet temperature.
According to an embodiment of the present invention, the control module is further configured to:
acquiring a first absolute value of a difference value between the first indoor temperature and the first outlet air temperature;
and adjusting the gears of a fresh air fan and an exhaust fan in the total heat exchanger according to the first absolute value.
According to an embodiment of the present invention, the control module is further configured to:
detecting and determining that the first absolute value is greater than or equal to a first temperature threshold value, controlling the new air fan to downshift, and keeping the gear of the exhaust air fan unchanged; or
And detecting and determining that the first absolute value is smaller than the first temperature threshold value, and keeping the gear of the fresh air fan and the gear of the exhaust fan unchanged.
According to an embodiment of the present invention, the control module is further configured to:
acquiring a second indoor temperature of an indoor environment and a second air outlet temperature of the total heat exchanger at intervals of preset duration;
acquiring a second absolute value of a difference value between the second indoor temperature and the second outlet air temperature;
and detecting and determining that the second absolute value is smaller than a second temperature threshold value, controlling the fresh air fan to be upshifted, and keeping the gear of the exhaust fan unchanged, wherein the second temperature threshold value is smaller than the first temperature threshold value.
According to an embodiment of the present invention, the control module is further configured to:
detecting and determining that the second absolute value is greater than or equal to the second temperature threshold;
detecting and determining that the second absolute value is smaller than a third temperature threshold value, and controlling to keep the gear of the fresh air fan and the gear of the exhaust fan unchanged; wherein the third temperature threshold is greater than the first temperature threshold; alternatively, the first and second electrodes may be,
and detecting and determining that the second absolute value is greater than or equal to the third temperature threshold value, controlling the new air fan to downshift, and keeping the gear of the exhaust air fan unchanged.
According to an embodiment of the present invention, the control module is further configured to:
obtaining a third indoor temperature of an indoor environment and a third outlet air temperature of the total heat exchanger at intervals of preset duration;
acquiring a third absolute value of a difference value between the third indoor temperature and the third outlet air temperature;
and detecting and determining that the third absolute value is smaller than a fourth temperature threshold, controlling the fresh air fan to shift up, and keeping the gear of the exhaust fan unchanged, wherein the fourth temperature threshold is smaller than the first temperature threshold and larger than the second temperature threshold.
According to an embodiment of the present invention, the control module is further configured to:
detecting and determining that the third absolute value is greater than or equal to the fourth temperature threshold value and smaller than the third temperature threshold value, and controlling to keep the gear of the fresh air fan and the gear of the exhaust fan unchanged; or
And detecting and determining that the third absolute value is greater than or equal to the fourth temperature threshold value and the third absolute value is greater than or equal to the third temperature threshold value, controlling the fresh air fan to downshift, and keeping the gear of the exhaust air fan unchanged.
According to an embodiment of the present invention, the control module is further configured to:
identifying a target temperature range to which the first indoor temperature belongs, and determining the first temperature threshold, and/or the second temperature threshold, and/or the third temperature threshold, and/or the fourth temperature threshold according to the target temperature range.
According to the control device of the total heat exchanger provided by the embodiment of the invention, after the acquisition module acquires the first indoor temperature of the indoor environment and the first air outlet temperature of the total heat exchanger, the control module adjusts the gears of the fresh air fan and the exhaust air fan in the total heat exchanger according to the first indoor temperature and the first air outlet temperature, so that condensation on the body of the total heat exchanger and the indoor air supply pipeline of the total heat exchanger is avoided. The device makes the new trend fan of total heat exchanger and the gear of the fan of airing exhaust suit with first indoor temperature and first air-out temperature, has improved total heat exchanger's heat exchange efficiency to the condensation appears on the fuselage of total heat exchanger and its indoor supply air duct has been avoided.
According to a third aspect of the present invention, there is provided a hot water treatment device comprising the control device of the total heat exchanger as set forth in the second aspect.
A fourth aspect of the present invention provides an electronic device, including a memory, a processor;
wherein the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the control method of the total heat exchanger in the first aspect.
A fifth aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the control method of the total heat exchanger described in the first aspect.
Drawings
FIG. 1 is a schematic flow chart of a method for controlling an enthalpy exchanger according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram illustrating steps of adjusting gears of a fresh air fan and an exhaust air fan in a control method of a total heat exchanger according to an embodiment of the disclosure;
FIG. 3 is a schematic diagram illustrating steps of adjusting gears of a fresh air fan and an exhaust air fan in a control method of a total heat exchanger according to another embodiment of the disclosure;
FIG. 4 is a schematic diagram illustrating steps of adjusting gears of a fresh air fan and an exhaust air fan in a control method of a total heat exchanger according to another embodiment of the disclosure;
FIG. 5 is a schematic diagram illustrating the steps for determining various temperature thresholds in a total heat exchanger control method according to an embodiment of the present disclosure;
FIG. 6 is a control flow diagram of a method of controlling an enthalpy exchanger according to an embodiment of the present disclosure;
FIG. 7 is a schematic structural diagram of a control device of the total heat exchanger according to an embodiment of the disclosure;
FIG. 8 is a schematic diagram of a total heat exchanger according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of an electronic device in an embodiment of the disclosure.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The total heat exchanger and the control method and apparatus thereof according to the embodiment of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart illustrating a method for controlling an enthalpy exchanger according to an embodiment of the present disclosure. As shown in fig. 1, the method for controlling an enthalpy exchanger according to an embodiment of the present invention includes the following steps:
s101, acquiring a first indoor temperature of an indoor environment and a first outlet air temperature of a total heat exchanger.
Specifically, a first indoor temperature of the indoor environment and a first outlet air temperature of the total heat exchanger may be obtained by the temperature sensor. The position of the temperature sensor can be determined according to the actual situation, and is not limited herein.
It should be noted that, in this embodiment, the first indoor temperature and the first outlet air temperature may be obtained in real time at preset time intervals or according to a control instruction. The control instruction may be issued by a user, but not limited to, for example, when the user turns on the condensation prevention function of the total heat exchanger, the first indoor temperature and the first outlet air temperature may be obtained.
In addition, generally speaking, before acquireing first indoor temperature and first departure temperature, need to discern the full heat exchanger and appear condensation phenomenon, when discerning the full heat exchanger and appear condensation phenomenon, the full heat exchanger gets into and prevents the condensation mode, just can begin to acquire first indoor temperature and first air-out temperature. For example, the humidity of the total heat exchanger body and/or the indoor air outlet pipeline can be detected by a humidity sensor arranged on the total heat exchanger; when the humidity exceeds a preset humidity threshold value, the condensation phenomenon of the total heat exchanger can be identified; at this time, the total heat exchanger can be controlled to enter the condensation prevention mode, and the first indoor temperature and the first outlet air temperature are obtained.
S102, adjusting gears of a fresh air fan and an exhaust fan in the total heat exchanger according to the first indoor temperature and the first air outlet temperature.
Specifically, the gear positions of the fresh air fan and the exhaust fan in the total heat exchanger can be adjusted according to the first indoor temperature and the first air outlet temperature by acquiring the first indoor temperature and the first air outlet temperature, so that condensation on the body of the total heat exchanger and the indoor air supply pipeline of the total heat exchanger is avoided.
As a possible implementation mode, the gears of the fresh air fan and the exhaust fan can be adjusted according to the size relation between the first indoor temperature and the first air outlet temperature. The specific steps are shown in fig. 2, and the steps comprise:
s201, acquiring a first absolute value of a difference value between the first indoor temperature and the first outlet air temperature.
Specifically, a difference between the first indoor temperature and the first outlet air temperature may be calculated; further, the absolute value of the difference between them is obtained. For the sake of convenience of distinction, the absolute value of the difference between the first indoor temperature and the first outlet air temperature is referred to as a first absolute value.
S202, adjusting the gears of a fresh air fan and an exhaust fan in the total heat exchanger according to the first absolute value.
Specifically, the gear of the fresh air fan and the gear of the exhaust fan in the total heat exchanger can be adjusted according to the first absolute value by acquiring the first absolute value of the difference between the first indoor temperature and the first outlet air temperature.
Optionally, detecting and determining that the first absolute value is greater than or equal to the first temperature threshold, controlling the new air fan to downshift, and keeping the gear of the exhaust air fan unchanged. The first temperature threshold value can be selected according to actual conditions. When the first absolute value is larger than or equal to the first temperature threshold, the difference between the first indoor temperature and the first air outlet temperature is larger, and at the moment, condensation can appear on the body of the total heat exchanger and the indoor air supply pipeline of the total heat exchanger. And through reducing the gear of new trend fan to keep the gear of the fan of airing exhaust unchangeable, can reduce the indoor speed of outdoor air admission, the time of extension heat exchange processing improves heat exchange efficiency, thereby reduces the temperature difference of the temperature of getting into the room air and the temperature of indoor original air, avoids appearing the condensation on full heat exchanger's fuselage and its indoor supply-air duct.
For example, when the first indoor temperature is higher than the first outlet air temperature, i.e. the outdoor temperature is lower, and the indoor temperature is higher, the temperature of the inner wall of the indoor air supply duct of the total heat exchanger will be lower than the temperature of the outer wall of the indoor air supply duct under the influence of the outdoor air. At this time, condensation will appear on the outer surface of the indoor air supply pipeline under the action of the temperature difference between the inner wall and the outer wall. And when reducing the gear of new trend fan to keep the gear of the fan of airing exhaust unchangeable, the speed that outdoor air got into indoorly will slow down, thereby the time of extension heat exchange treatment improves heat exchange efficiency, and then has reduced the difference in temperature between the temperature of the air temperature that gets into indoorly and the indoor original air.
Optionally, detecting and determining that the first absolute value is smaller than the first temperature threshold value, and keeping the gear of the fresh air fan and the gear of the exhaust fan unchanged. When the first absolute value is smaller than the first temperature threshold value, the first indoor temperature is smaller than the first air outlet temperature, condensation cannot occur on the machine body of the total heat exchanger and the indoor air supply pipeline, and at the moment, the gear of the fresh air fan and the gear of the air exhaust fan can be kept unchanged.
In summary, the control method of the total heat exchanger provided in the embodiment of the present invention obtains the first indoor temperature of the indoor environment and the first outlet air temperature of the total heat exchanger; furthermore, according to the first indoor temperature and the first air outlet temperature, the gears of the fresh air fan and the exhaust fan in the total heat exchanger are adjusted so as to avoid condensation on the body of the total heat exchanger and the indoor air supply pipeline thereof. The method enables the gears of the fresh air fan and the exhaust fan of the total heat exchanger to be adaptive to the first indoor temperature and the first air outlet temperature, improves the heat exchange efficiency of the total heat exchanger, and avoids condensation on the body of the total heat exchanger and the indoor air supply pipeline of the total heat exchanger.
On the basis of the above embodiment, after the gear of the fresh air fan and the gear of the exhaust fan are kept unchanged, in order to introduce sufficient fresh air into the room to optimize the indoor air, the gears of the fresh air fan and the exhaust fan can be adjusted through the following steps. Specifically, as shown in fig. 3, the step includes:
s301, obtaining a second indoor temperature of the indoor environment and a second air outlet temperature of the total heat exchanger at preset intervals.
Specifically, after the gear of the fresh air fan and the gear of the exhaust fan are kept unchangeable for a certain time, namely the interval is preset for a long time, and the second indoor temperature of the indoor environment and the second air outlet temperature of the total heat exchanger can be obtained through the temperature sensor.
S302, a second absolute value of a difference value between the second indoor temperature and the second outlet air temperature is obtained.
Specifically, the difference between the second indoor temperature and the second outlet air temperature may be calculated; further, the absolute value of the difference between them is obtained. For the sake of convenience of distinction, the absolute value of the difference between the second indoor temperature and the second outlet air temperature is referred to as a second absolute value.
S303, identifying whether the second absolute value is smaller than a second temperature threshold value.
In the present embodiment, if the second absolute value is smaller than the second temperature threshold, step S304 is executed; otherwise, steps S305 to S307 are executed. In this embodiment, the second temperature threshold is less than the first temperature threshold.
S304, controlling the fresh air fan to shift up, and keeping the shift of the exhaust fan unchanged.
Specifically, if it can be detected and determined that the second absolute value is smaller than the second temperature threshold, it indicates that the difference between the second indoor temperature and the second outlet air temperature is small, and no condensation occurs on the body of the total heat exchanger and the indoor air supply duct thereof. At the moment, in order to introduce enough fresh air into the room to optimize the indoor air, the fresh air fan can be controlled to be shifted up, and the exhaust fan is kept unchanged as the shift.
And S305, identifying whether the second absolute value is smaller than a third temperature threshold value.
Specifically, if it can be detected and determined that the second absolute value is greater than or equal to the second temperature threshold, the magnitude relationship between the second absolute value and the third temperature threshold can be further judged. When the second absolute value is smaller than the third temperature threshold, executing step S306; otherwise, step S307 is executed. In this embodiment, the third temperature threshold is greater than the first temperature threshold.
S306, controlling to keep the gear of the fresh air fan and the gear of the exhaust fan unchanged.
Specifically, if it can be detected and determined that the second absolute value is smaller than the third temperature threshold, the gear of the fresh air fan and the gear of the exhaust air fan can be controlled to be kept unchanged.
And S307, controlling the fresh air fan to downshift, and keeping the gear of the exhaust fan unchanged.
Specifically, if it can be detected and determined that the second absolute value is greater than or equal to the third temperature threshold, the new air fan is controlled to downshift, and the gear of the exhaust air fan is kept unchanged, so as to avoid condensation on the body of the total heat exchanger and the indoor air supply pipeline thereof.
It should be understood that, in this embodiment, the third temperature threshold is set to be greater than the first temperature threshold, so that a certain lifting space is left for temperature lifting, and a phenomenon that the gear of the fresh air fan is switched continuously when the second absolute value fluctuates near the first temperature threshold is avoided. Wherein the first temperature threshold and the third temperature threshold differ by a small amount, for example, by 1 ℃. The first temperature threshold and the third temperature threshold may be determined according to actual conditions, and are not limited herein.
On the basis of the above embodiment, after the new air fan is controlled to be shifted up and the gear of the exhaust air fan is kept unchanged, in order to avoid the situation that the difference between the indoor environment temperature and the air supply temperature of the total heat exchanger is large, the gears of the new air fan and the exhaust air fan can be adjusted through the following steps. Specifically, as shown in fig. 4, the step includes:
s401, obtaining a third indoor temperature of the indoor environment and a third air outlet temperature of the total heat exchanger at preset intervals.
Specifically, after the fresh air fan is controlled to be shifted up and the shift of the exhaust fan is kept unchanged, that is, after the interval is preset for a long time, the third indoor temperature of the indoor environment and the third outlet air temperature of the total heat exchanger can be obtained through the temperature sensor.
S402, acquiring a third absolute value of a difference value between the third indoor temperature and the third outlet air temperature.
Specifically, a difference between the third indoor temperature and the third outlet air temperature may be calculated; further, the absolute value of the difference between them is obtained. For the sake of convenience of distinction, the absolute value of the difference between the third indoor temperature and the third outlet air temperature is referred to as a third absolute value.
And S403, identifying whether the third absolute value is smaller than a third temperature threshold value.
In this embodiment, if the third absolute value is smaller than the fourth temperature threshold, step S404 is executed; otherwise, steps S405 to S407 are performed. In this embodiment, the fourth temperature threshold is smaller than the first temperature threshold and larger than the second temperature threshold.
S404, controlling the fresh air fan to shift up, and keeping the shift of the exhaust fan unchanged.
Specifically, if it can be detected and determined that the third absolute value is smaller than the fourth temperature threshold, it indicates that the difference between the third indoor temperature and the third outlet air temperature is small, and no condensation occurs on the body of the total heat exchanger and the indoor air supply duct thereof. At the moment, the fresh air fan can be controlled to be shifted up, and the exhaust fan is kept unchanged as the shift, namely, sufficient fresh air is continuously introduced into the room, so that the indoor air is optimal.
S405, whether the third absolute value is smaller than a third temperature threshold value or not is identified.
Specifically, if it can be detected and determined that the third absolute value is greater than or equal to the fourth temperature threshold, the magnitude relationship between the third absolute value and the third temperature threshold can be further judged. When the third absolute value is smaller than the third temperature threshold, step S406 is executed; otherwise, step S407 is executed.
S406, controlling to keep the gear of the fresh air fan and the gear of the exhaust fan unchanged.
Specifically, if it can be detected and determined that the third absolute value is smaller than the third temperature threshold, the gear of the fresh air fan and the gear of the exhaust air fan can be controlled to be kept unchanged.
And S407, controlling the fresh air fan to downshift, and keeping the gear of the exhaust fan unchanged.
Specifically, if it can be detected and determined that the third absolute value is greater than or equal to the third temperature threshold, the new air fan may be controlled to downshift and the gear of the exhaust air fan may be kept unchanged, so as to avoid condensation on the body of the total heat exchanger and the indoor air supply duct thereof.
It should be understood that, in this embodiment, the fourth temperature threshold is set to be smaller than the first temperature threshold and larger than the second temperature threshold, and a certain lifting space is also left for temperature lifting, so as to avoid a phenomenon that the gear of the fresh air fan is continuously switched when the third absolute value fluctuates around the second temperature threshold. Wherein the fourth temperature threshold and the second temperature threshold differ by a small amount, for example, by 1 ℃. The fourth temperature threshold and the second temperature threshold may be determined according to actual situations, and are not limited herein.
On the basis of the above embodiment, in order to improve the accuracy of control, before the gear of the fresh air fan and the gear of the exhaust fan are adjusted, the value of the first temperature threshold, and/or the value of the second temperature threshold, and/or the value of the third temperature threshold, and/or the value of the fourth temperature threshold may be determined according to the first indoor temperature. Specifically, as shown in fig. 5, the step includes:
s501, identifying a target temperature range to which the first indoor temperature belongs.
Specifically, the first indoor temperature is obtained, and then the first indoor temperature can be compared with a preset temperature range, so that a target temperature range to which the first indoor temperature belongs is determined.
S502, determining a first temperature threshold value, a second temperature threshold value, a third temperature threshold value and a fourth temperature threshold value according to the target temperature range.
Specifically, when the target temperature range is determined, the first temperature threshold, the second temperature threshold, the third temperature threshold, and/or the fourth temperature threshold may be determined according to the target temperature range.
For example, if the target temperature range is [ M1, M2], the first temperature threshold is C1, the second temperature threshold is C2, the third temperature threshold is D1, the fourth temperature threshold is D2; when the target temperature range is [ M2, + ∞ ], the first temperature threshold is E1, the second temperature threshold E2, the third temperature threshold F1, and the fourth temperature threshold F2; when the target temperature range is [ -infinity, M1], the first temperature threshold is a1, the second temperature threshold is a2, the third temperature threshold is B1, and the fourth temperature threshold is B2. Then if it is determined that the first indoor temperature is in [ M1, M2], it may be determined that the first temperature threshold is C1, the second temperature threshold C2, the third temperature threshold D1, the fourth temperature threshold D2; if it is determined that the first indoor temperature is within [ M2, + ∞ ], the first temperature threshold may be determined to be E1, a second temperature threshold E2, a third temperature threshold F1, and a fourth temperature threshold F2; if it is determined that the first indoor temperature is within [ -infinity, M1], the first temperature threshold may be determined to be a1, the second temperature threshold a2, the third temperature threshold B1, and the fourth temperature threshold B2.
For the sake of understanding, the method for controlling the total heat exchanger in the present embodiment is described below with reference to fig. 6, where fig. 6 is a control flowchart of the method for controlling the total heat exchanger in the embodiment disclosed in the present invention. As shown in fig. 6, a control flow of the control method of the total heat exchanger in the embodiment of the present invention includes the following steps:
s601, acquiring a first indoor temperature of an indoor environment and a first outlet air temperature of a total heat exchanger.
S602, a first absolute value of a difference value between the first indoor temperature and the first outlet air temperature is obtained.
And S603, comparing the magnitude relation between the first absolute value and the first temperature threshold. If the first absolute value is less than the first temperature threshold, performing steps S605 to S614; otherwise, step S604 is executed.
And S604, controlling the fresh air fan to downshift, and keeping the gear of the exhaust fan unchanged.
S605, keeping the gear of the fresh air fan and the gear of the exhaust fan unchanged.
And S606, obtaining a second indoor temperature of the indoor environment and a second air outlet temperature of the total heat exchanger at preset intervals.
S607, a second absolute value of the difference between the second indoor temperature and the second outlet air temperature is obtained.
And S608, comparing the magnitude relation between the second absolute value and the second temperature threshold. If the second absolute value is less than the second temperature threshold, performing steps S610 to S614; otherwise, step S609 is executed.
And S609, comparing the magnitude relation between the second absolute value and the third temperature threshold. If the second absolute value is smaller than the third temperature threshold, returning to execute the step S605; otherwise, the procedure returns to step S604.
S610, controlling the fresh air fan to ascend and keeping the gear of the exhaust fan unchanged.
S611, acquiring a third indoor temperature of the indoor environment and a third outlet air temperature of the total heat exchanger at preset intervals.
And S612, acquiring a third absolute value of a difference value between the third indoor temperature and the third outlet air temperature.
And S613, comparing the magnitude relation between the third absolute value and the fourth temperature threshold. If the third absolute value is less than the fourth temperature threshold, performing step S614; otherwise, the step S609 is executed in return.
And S614, controlling the fresh air fan to shift up, and keeping the gear of the exhaust fan unchanged.
In order to implement the above embodiments, an embodiment of the present invention further provides a control device for a total heat exchanger.
Fig. 7 is a schematic structural diagram of a control device of an enthalpy exchanger according to an embodiment of the present disclosure, as shown in fig. 7, the device includes:
an obtaining module 701, configured to obtain a first indoor temperature of an indoor environment and a first outlet air temperature of a total heat exchanger;
and the control module 702 is configured to adjust the gears of the fresh air fan and the exhaust air fan in the total heat exchanger according to the first indoor temperature and the first air outlet temperature.
Further, the control module 702 is further configured to:
acquiring a first absolute value of a difference value between a first indoor temperature and a first outlet air temperature;
and adjusting the gears of the fresh air fan and the exhaust fan in the total heat exchanger according to the first absolute value.
Further, the control module 702 is further configured to:
detecting and determining that the absolute value is greater than or equal to a first temperature threshold value, controlling the new air fan to downshift, and keeping the gear of the exhaust air fan unchanged; or
And detecting and determining that the absolute value is smaller than a first temperature threshold value, and keeping the gear of the fresh air fan and the gear of the exhaust fan unchanged.
Further, the control module 702 is further configured to:
acquiring a second indoor temperature of the indoor environment and a second air outlet temperature of the total heat exchanger at intervals of preset duration;
acquiring a second absolute value of a difference value between a second indoor temperature and a second outlet air temperature;
and detecting and determining that the second absolute value is smaller than a second temperature threshold value, controlling the fresh air fan to be upshifted, and keeping the gear of the exhaust fan unchanged, wherein the second temperature threshold value is smaller than the first temperature threshold value.
Further, the control module 702 is further configured to:
detecting and determining that the second absolute value is greater than or equal to a second temperature threshold;
detecting and determining that the second absolute value is smaller than a third temperature threshold value, and controlling to keep the gear of the fresh air fan and the gear of the exhaust fan unchanged; wherein the third temperature threshold is greater than the first temperature threshold; alternatively, the first and second electrodes may be,
and detecting and determining that the second absolute value is greater than or equal to a third temperature threshold value, controlling the new air fan to downshift, and keeping the gear of the exhaust air fan unchanged.
Further, the control module 702 is further configured to:
acquiring a third indoor temperature of the indoor environment and a third air outlet temperature of the total heat exchanger at intervals of preset duration;
acquiring a third absolute value of a difference value between a third indoor temperature and a third outlet air temperature;
and detecting and determining that the third absolute value is smaller than a fourth temperature threshold, controlling the fresh air fan to be upshifted, and keeping the gear of the exhaust fan unchanged, wherein the fourth temperature threshold is smaller than the first temperature threshold and larger than the second temperature threshold.
Further, the control module 702 is further configured to:
detecting and determining that the third absolute value is greater than or equal to the fourth temperature threshold value and is smaller than the third temperature threshold value, and controlling to keep the gear of the fresh air fan and the gear of the exhaust fan unchanged; or
And detecting and determining that the third absolute value is greater than or equal to the fourth temperature threshold value and the third absolute value is greater than or equal to the third temperature threshold value, controlling the new air fan to downshift, and keeping the gear of the exhaust air fan unchanged.
Further, the control module 702 is further configured to:
the method comprises the steps of identifying a target temperature range to which a first indoor temperature belongs, and determining a first temperature threshold value, a second temperature threshold value, a third temperature threshold value and a fourth temperature threshold value according to the target temperature range.
It should be understood that the above-mentioned apparatus is used for executing the method in the above-mentioned embodiments, and the implementation principle and technical effect of the apparatus are similar to those described in the above-mentioned method, and the working process of the apparatus may refer to the corresponding process in the above-mentioned method, and is not described herein again.
In summary, in the control device of the total heat exchanger according to the embodiments of the present invention, after the obtaining module obtains the first indoor temperature of the indoor environment and the first outlet air temperature of the total heat exchanger, the control module adjusts the gears of the fresh air fan and the exhaust air fan in the total heat exchanger according to the first indoor temperature and the first outlet air temperature, so as to prevent condensation from occurring on the body of the total heat exchanger and the indoor air supply duct thereof. The device makes the new trend fan of total heat exchanger and the gear of the fan of airing exhaust suit with first indoor temperature and first air-out temperature, has improved total heat exchanger's heat exchange efficiency to the condensation appears on the fuselage of total heat exchanger and its indoor supply air duct has been avoided.
In order to implement the above embodiment, an embodiment of the present invention further provides an enthalpy exchanger, as shown in fig. 8, in which the control device 100 of the aforementioned enthalpy exchanger is disposed.
In order to implement the foregoing embodiments, an embodiment of the present invention further provides an electronic device, as shown in fig. 9, where the electronic device includes a memory 901, a processor 902; wherein the processor 902 runs a program corresponding to the executable program code by reading the executable program code stored in the memory 901 for implementing the respective steps of the above method.
In order to implement the above embodiments, the present invention further provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the above method.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A method of controlling an enthalpy exchanger, the method comprising:
acquiring a first indoor temperature of an indoor environment and a first outlet air temperature of the total heat exchanger;
identifying a target temperature range to which the first indoor temperature belongs, and determining a first temperature threshold, a second temperature threshold, a third temperature threshold and a fourth temperature threshold according to the target temperature range, wherein the second temperature threshold is smaller than the first temperature threshold, the third temperature threshold is larger than the first temperature threshold, and the fourth temperature threshold is smaller than the first temperature threshold and larger than the second temperature threshold;
acquiring a first absolute value of a difference value between the first indoor temperature and the first outlet air temperature;
detecting and determining that the first absolute value is smaller than the first temperature threshold value, and keeping the gear of the fresh air fan and the gear of the exhaust fan unchanged;
acquiring a second indoor temperature of an indoor environment and a second air outlet temperature of the total heat exchanger at intervals of preset duration;
acquiring a second absolute value of a difference value between the second indoor temperature and the second outlet air temperature;
detecting and determining that the second absolute value is smaller than a second temperature threshold value, controlling the fresh air fan to be shifted up, and keeping the shift of the exhaust fan unchanged;
obtaining a third indoor temperature of an indoor environment and a third outlet air temperature of the total heat exchanger at intervals of preset duration;
acquiring a third absolute value of a difference value between the third indoor temperature and the third outlet air temperature;
and detecting and determining that the third absolute value is smaller than a fourth temperature threshold value, controlling the fresh air fan to be upshifted, and keeping the gear of the exhaust fan unchanged.
2. The method of claim 1, wherein after obtaining the first absolute value of the difference between the first indoor temperature and the first outlet air temperature, further comprising:
and detecting and determining that the first absolute value is greater than or equal to a first temperature threshold value, controlling the new air fan to downshift, and keeping the gear of the exhaust air fan unchanged.
3. The method of claim 1, wherein after obtaining the second absolute value of the difference between the second indoor temperature and the second outlet air temperature, further comprising:
detecting and determining that the second absolute value is greater than or equal to the second temperature threshold;
detecting and determining that the second absolute value is smaller than a third temperature threshold value, and controlling to keep the gear of the fresh air fan and the gear of the exhaust fan unchanged; alternatively, the first and second electrodes may be,
and detecting and determining that the second absolute value is greater than or equal to the third temperature threshold value, controlling the new air fan to downshift, and keeping the gear of the exhaust air fan unchanged.
4. The method of claim 1, wherein after obtaining the third absolute value of the difference between the third indoor temperature and the third outlet air temperature, further comprising:
detecting and determining that the third absolute value is greater than or equal to the fourth temperature threshold value and smaller than the third temperature threshold value, and controlling to keep the gear of the fresh air fan and the gear of the exhaust fan unchanged; or
And detecting and determining that the third absolute value is greater than or equal to the fourth temperature threshold value and the third absolute value is greater than or equal to the third temperature threshold value, controlling the fresh air fan to downshift, and keeping the gear of the exhaust air fan unchanged.
5. A control apparatus for an enthalpy exchanger, the apparatus comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring a first indoor temperature of an indoor environment and a first air outlet temperature of the total heat exchanger;
a control module for identifying a target temperature range to which the first indoor temperature belongs, determining a first temperature threshold, a second temperature threshold, a third temperature threshold and a fourth temperature threshold according to the target temperature range,
wherein the second temperature threshold is less than the first temperature threshold, the third temperature threshold is greater than the first temperature threshold, and the fourth temperature threshold is less than the first temperature threshold and greater than the second temperature threshold;
the control module is further configured to:
acquiring a first absolute value of a difference value between the first indoor temperature and the first outlet air temperature;
detecting and determining that the first absolute value is smaller than the first temperature threshold value, and keeping the gear of the fresh air fan and the gear of the exhaust fan unchanged;
acquiring a second indoor temperature of an indoor environment and a second air outlet temperature of the total heat exchanger at intervals of preset duration;
acquiring a second absolute value of a difference value between the second indoor temperature and the second outlet air temperature;
detecting and determining that the second absolute value is smaller than a second temperature threshold value, controlling the fresh air fan to be shifted up, and keeping the shift of the exhaust fan unchanged;
obtaining a third indoor temperature of an indoor environment and a third outlet air temperature of the total heat exchanger at intervals of preset duration;
acquiring a third absolute value of a difference value between the third indoor temperature and the third outlet air temperature;
and detecting and determining that the third absolute value is smaller than a fourth temperature threshold value, controlling the fresh air fan to be upshifted, and keeping the gear of the exhaust fan unchanged.
6. An enthalpy exchanger, characterized by comprising the control device of the enthalpy exchanger as recited in claim 5.
7. An electronic device comprising a memory, a processor;
wherein the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, for implementing the control method of the total heat exchanger according to any one of claims 1 to 4.
8. A computer-readable storage medium storing a computer program, wherein the program is executed by a processor to implement the control method of an enthalpy exchanger according to any one of claims 1 to 4.
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| CN112781200B (en) * | 2019-11-01 | 2022-11-22 | 广东美的制冷设备有限公司 | Wall-penetrating type air conditioner, control method and device thereof and readable storage medium |
| CN110925967A (en) * | 2019-12-11 | 2020-03-27 | 南京晶华智能科技有限公司 | Exhaust air heat recovery efficiency adjusting method, device and system |
| CN113899045B (en) * | 2021-10-26 | 2022-12-23 | 三一筑工科技股份有限公司 | Fresh air control method, fresh air control system, fresh air system and building |
| CN117128626B (en) * | 2023-07-21 | 2024-06-04 | 江森自控日立万宝空调(广州)有限公司 | Self-adaptive adjusting method for cooling mode of natural cooling air conditioning unit |
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