CN107588496B - Fresh air fan, control method of air supply temperature of fresh air fan and computer readable storage medium - Google Patents
Fresh air fan, control method of air supply temperature of fresh air fan and computer readable storage medium Download PDFInfo
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- CN107588496B CN107588496B CN201710729075.7A CN201710729075A CN107588496B CN 107588496 B CN107588496 B CN 107588496B CN 201710729075 A CN201710729075 A CN 201710729075A CN 107588496 B CN107588496 B CN 107588496B
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Abstract
The invention discloses a new fan. The new fan includes: fan body, heater, evaporimeter, controller and first temperature sensor, heater and water heater series connection, heater, evaporimeter, water heater and first temperature sensor respectively with the controller electricity is connected, the controller is used for: when a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor at preset time intervals; comparing the return air temperature with the target temperature and a preset threshold value to obtain a first comparison result; and correspondingly controlling the heater, the water heater and the evaporator according to the first comparison result so as to control the air supply temperature of the fresh air fan. The invention also discloses a control method of the air supply temperature of the fresh air fan and a computer readable storage medium. The method and the device can stably control the air supply temperature of the fresh air fan, and avoid discomfort caused by large fluctuation of the air supply temperature to users, thereby improving user experience.
Description
Technical Field
The invention relates to the field of new fans, in particular to a new fan, a control method of air supply temperature of the new fan and a computer readable storage medium.
Background
For a central air conditioner, a fresh air unit is one of terminal equipment, and is mainly used for processing fresh air introduced from the outside, processing the outdoor air into air with the temperature close to the indoor temperature, and filtering the air, so that the quality of the indoor fresh air is ensured, and the defect that the indoor air is not circulated when the air conditioner is used for refrigerating or heating is avoided.
At present, most of fresh air blowers in the industry can only operate in an interval with return air temperature of more than-5 ℃, and when the return air temperature is lower than-5 ℃, the return air temperature of the fresh air is increased by adopting an electric heating mode, and the electric heating mode is not easy to control, so that the fluctuation of the heated return air temperature of the fresh air is large, and the fluctuation of the air supply temperature of the fresh air blower is large, thereby causing discomfort to users.
Disclosure of Invention
The invention mainly aims to provide a fresh air fan and an air supply temperature control method thereof, a fresh air fan with a computer-readable storage medium and an air supply temperature control method thereof, and the computer-readable storage medium, aiming at stably controlling the air supply temperature of the fresh air fan, avoiding the discomfort caused by the large fluctuation of the air supply temperature to a user and further improving the user experience.
In order to achieve the above object, the present invention provides a new fan, including: fan body, heater, evaporimeter and controller, heater and water heater series connection, new fan still includes: set up in the first temperature sensor at new fan return air inlet, heater, evaporimeter, water heater and first temperature sensor respectively with the controller electricity is connected, the controller is used for:
when a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor at preset time intervals;
comparing the return air temperature with the target temperature and a preset threshold value to obtain a first comparison result;
and correspondingly controlling the heater, the water heater and the evaporator according to the first comparison result so as to control the air supply temperature of the fresh air fan.
Optionally, the preset threshold is smaller than the target temperature, and the controller is further configured to:
when the return air temperature is less than the preset threshold value and the duration time exceeds the preset duration time, the heater, the water heater and the evaporator are started, so that the air supply temperature of the fresh air fan is controlled;
when the return air temperature is greater than or equal to the preset threshold value and less than or equal to the target temperature and the duration time exceeds the preset duration time, the heater and the water heater are closed, and the evaporator is started, so that the air supply temperature of the fresh air fan is controlled;
and when the return air temperature is higher than the target temperature and the duration time exceeds the preset duration time, closing the heater, the water heater and the evaporator so as to control the air supply temperature of the fresh air fan.
Optionally, the fresh air machine further comprises: a second temperature sensor disposed between the heater and the evaporator, the second temperature sensor being electrically connected to the controller, the controller further being configured to:
when the new fan receives a heating instruction, acquiring the air supply temperature of the heater sent by a second temperature sensor;
comparing the air supply temperature of the heater with the preset threshold value to obtain a second comparison result;
and correspondingly adjusting the wind gear of the new fan according to the second comparison result so as to control the air supply temperature of the new fan.
Optionally, the fresh air machine further comprises: an electronic expansion valve connected in series with the evaporator, the electronic expansion valve being electrically connected with the controller, the controller further being configured to:
and correspondingly adjusting the opening of the electronic expansion valve according to the second comparison result so as to control the air supply temperature of the fresh air fan.
In addition, in order to achieve the above object, the present invention further provides a method for controlling an air supply temperature of a new air blower, where the method for controlling an air supply temperature of a new air blower is applied to the new air blower, and the method for controlling an air supply temperature of a new air blower includes:
when a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor at preset time intervals;
comparing the return air temperature with the target temperature and a preset threshold value to obtain a first comparison result;
and correspondingly controlling the heater, the water heater and the evaporator according to the first comparison result so as to control the air supply temperature of the fresh air fan.
Optionally, the step of controlling the heater, the water heater, and the evaporator according to the first comparison result so as to control the air supply temperature of the fresh air blower includes:
when the return air temperature is less than the preset threshold value and the duration time exceeds the preset duration time, the heater, the water heater and the evaporator are started, so that the air supply temperature of the fresh air fan is controlled;
when the return air temperature is greater than or equal to the preset threshold value and less than or equal to the target temperature and the duration time exceeds the preset duration time, the heater and the water heater are closed, and the evaporator is started, so that the air supply temperature of the fresh air fan is controlled;
and when the return air temperature is higher than the target temperature and the duration time exceeds the preset duration time, closing the heater, the water heater and the evaporator so as to control the air supply temperature of the fresh air fan.
Optionally, the new fan further includes a second temperature sensor, and the step of obtaining a target temperature set by a user when a heating instruction is received, and obtaining the return air temperature sent by the first temperature sensor at preset intervals includes:
when a heating instruction is received, acquiring a target temperature set by a user, and acquiring return air temperature and heater air supply temperature respectively sent by the first temperature sensor and the second temperature sensor at preset time intervals;
the step of comparing the return air temperature with the target temperature and a preset threshold value to obtain a first comparison result comprises the following steps:
comparing the return air temperature with the target temperature and a preset threshold value, and comparing the air supply temperature of the heater with the preset threshold value to respectively obtain a first comparison result and a second comparison result;
the step of correspondingly controlling the heater, the water heater and the evaporator according to the first comparison result so as to control the air supply temperature of the fresh air fan comprises the following steps:
and controlling the heater, the water heater and the evaporator according to the first comparison result, and adjusting the wind gear of the fresh air fan according to the second comparison result, so as to control the air supply temperature of the fresh air fan.
Optionally, the step of controlling the heater, the water heater, and the evaporator according to the first comparison result, and adjusting the wind level of the fresh air fan according to the second comparison result, so as to control the air supply temperature of the fresh air fan, further includes:
and controlling the heater, the water heater and the evaporator according to the first comparison result, and adjusting the wind level of the fresh air fan and the opening degree of the electronic expansion valve according to the second comparison result, so as to control the air supply temperature of the fresh air fan.
Optionally, the step of adjusting the wind level of the fresh air machine and the opening degree of the electronic expansion valve according to the second comparison result includes:
when the air supply temperature of the heater is smaller than the preset threshold value and the duration time exceeds the preset time, adjusting the air gear of the fresh air fan to reduce by one gear, and adjusting the opening of the electronic expansion valve to increase by the preset opening;
and when the air supply temperature of the heater is greater than or equal to the preset threshold value and the duration time exceeds the preset time, keeping the air gear of the fresh air fan and the opening degree of the electronic expansion valve.
In addition, in order to achieve the above object, the present invention further provides a computer-readable storage medium, where a control program of the air supply temperature of the new air blower is stored on the computer-readable storage medium, and when the control program of the air supply temperature of the new air blower is executed by a processor, the steps of the control method of the air supply temperature of the new air blower are implemented.
The invention provides a fresh air fan, a control method of air supply temperature of the fresh air fan and a computer readable storage medium. The new fan includes: fan body, heater, evaporimeter and controller, heater and water heater series connection, new fan still includes: set up in the first temperature sensor at new fan return air inlet, heater, evaporimeter, water heater and first temperature sensor respectively with the controller electricity is connected, the controller is used for: when a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor at preset time intervals; comparing the return air temperature with the target temperature and a preset threshold value to obtain a first comparison result; and correspondingly controlling the heater, the water heater and the evaporator according to the first comparison result so as to control the air supply temperature of the fresh air fan. Through the mode, the heater in the fresh air machine can be connected with a water heater for bathing as common in families, hot water is prepared by the water heater to provide a heat source for the heater, and the hot water in the water heater can be recycled and can be used for bathing and the like, so that energy can be saved to a certain extent. When a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor at preset time intervals; the return air temperature is compared with the target temperature and the preset threshold value, the heater, the water heater and the evaporator are controlled according to the comparison result, when the outdoor return air temperature is very low, namely the measured return air temperature is lower than the preset threshold value, the heater, the water heater and the evaporator can be started, the water heater is enabled to produce hot water to provide a heat source for the heater, and therefore the ultralow-temperature outdoor return air is heated through the heater.
Drawings
FIG. 1 is a schematic structural view of a fresh air machine of the present invention;
fig. 2 is a schematic diagram of a terminal structure of a hardware operating environment according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of a method for controlling the supply air temperature of a fresh air fan according to a first embodiment of the present invention;
FIG. 4 is a detailed flow chart illustrating the control of the heater, the water heater and the evaporator according to the first comparison result, so as to control the temperature of the air supplied by the fresh air blower in the embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating a method for controlling an air supply temperature of a fresh air blower according to a second embodiment of the present invention;
FIG. 6 is a flow chart illustrating a third embodiment of a method for controlling an air supply temperature of a fresh air blower according to the present invention;
fig. 7 is a schematic view of a detailed flow of adjusting the wind level of the fresh air machine and the opening degree of the electronic expansion valve according to the second comparison result in the embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the prior art, most of fresh air blowers in the industry can only operate in an interval with return air temperature of more than-5 ℃, and when the return air temperature is lower than-5 ℃, the return air temperature of fresh air is increased by adopting an electric heating mode, and the electric heating mode is not easy to control, so that the fluctuation of the heated return air temperature of the fresh air is large, and the fluctuation of the supply air temperature of the fresh air is large, thereby causing discomfort to users.
In order to solve the technical problem, the invention provides a new fan. The new fan includes: fan body, heater, evaporimeter and controller, heater and water heater series connection, new fan still includes: set up in the first temperature sensor at new fan return air inlet, heater, evaporimeter, water heater and first temperature sensor respectively with the controller electricity is connected, the controller is used for: when a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor at preset time intervals; comparing the return air temperature with the target temperature and a preset threshold value to obtain a first comparison result; and correspondingly controlling the heater, the water heater and the evaporator according to the first comparison result so as to control the air supply temperature of the fresh air fan. Through the mode, the heater in the fresh air machine can be connected with a water heater for bathing as common in families, hot water is prepared by the water heater to provide a heat source for the heater, and the hot water in the water heater can be recycled and can be used for bathing and the like, so that energy can be saved to a certain extent. When a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor at preset time intervals; the return air temperature is compared with the target temperature and the preset threshold value, the heater, the water heater and the evaporator are controlled according to the comparison result, when the outdoor return air temperature is very low, namely the measured return air temperature is lower than the preset threshold value, the heater, the water heater and the evaporator can be started, the water heater is enabled to produce hot water to provide a heat source for the heater, and therefore the ultralow-temperature outdoor return air is heated through the heater.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a fresh air machine according to the present invention.
The fresh air machine of the invention can be a single device or a terminal device in a central air conditioner, and is mainly used for processing fresh air introduced from the outside, processing the outdoor air into air with the temperature close to the indoor temperature, and filtering the air, thereby providing fresh air for the indoor. In the embodiment of the present invention, a new air blower is taken as an example of an end device of a central air conditioner, and the new air blower includes: the air blower comprises a blower body 1, a heater 2, an evaporator 3, a controller 4, a first temperature sensor 5, a second temperature sensor 6 and an electronic expansion valve 7. As shown in fig. 1, the first temperature sensor 5 is disposed at the fresh air machine return air inlet, and is configured to detect the return air temperature and send the return air temperature to the controller 4. A second temperature sensor 6 is provided between the heater and the evaporator for detecting the heater supply air temperature and sending the heater supply air temperature to the controller 4. Wherein, heater 2 and water heater 8 series connection for water heater 8 is prepared hot water and is provided the heat source for heater 2, thereby heats the outdoor return air of ultra-low temperature through heater 2. Further, the heater 2, the evaporator 3, the first temperature sensor 5, the second temperature sensor 6, the electronic expansion valve 7, and the water heater 8 are electrically connected to the controller 4 (not shown in fig. 1), respectively.
In addition, as shown in fig. 1, when the heater 2 is connected in series with the water heater 8, the connection line may further include: the system comprises an expansion tank 9, a flow switch 10, a circulating water pump 11 and a water replenishing valve 12, wherein the flow switch 10 can be used for adjusting the water flow, the circulating water pump 11 is used for circulating the water system, and the water replenishing valve 12 is used for controlling the water quantity of the water system. In addition, the fresh air fans used in the specific implementation are different, the corresponding connection relations and structures can be different, and the structures and the connection modes thereof included in the connection lines for connecting the heater 2 and the water heater 8 can also be different.
Further, referring to fig. 2, fig. 2 is a schematic diagram of a terminal structure of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention is a controller in a fresh air machine.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the terminal configuration shown in fig. 2 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 2, a memory 1005, which is a type of computer storage medium, may include an operating system, a network communication module, a user interface module, and a control program for controlling the temperature of the fresh air supply.
In the terminal shown in fig. 2, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; the processor 1001 may be configured to call a control program for controlling the temperature of the fresh air supply from the storage 1005, and perform the following operations:
when a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor at preset time intervals;
comparing the return air temperature with the target temperature and a preset threshold value to obtain a first comparison result;
and correspondingly controlling the heater, the water heater and the evaporator according to the first comparison result so as to control the air supply temperature of the fresh air fan.
In the embodiment of the invention, when newWhen a controller in the fan receives a heating instruction, a target temperature T set by a user is obtained1And every preset time t1Acquiring the return air temperature T sent by the first temperature sensor2I.e., the outdoor return air temperature. The heating instruction can be that when a user starts a heating mode through remote control of the air conditioner, and a controller in the air conditioner receives the instruction of the user, the controller in the air conditioner sends the heating instruction to a controller in the fresh air machine. The controller then obtains the return air temperature T2With the target temperature T set by the user1And a preset threshold value T3And comparing, obtaining a first comparison result according to the size relation between the indoor air and the outdoor air, and controlling the heater, the water heater and the evaporator according to the first comparison result, so that the outdoor return air is heated to different degrees, the air supply temperature of the fresh air fan is controlled, and the air supply temperature reaches the target temperature set by a user. It should be noted that the heater of the fresh air fan is connected in series with the water heater, so that the water heater produces hot water to provide a heat source for the heater, and the heater heats the ultra-low temperature outdoor return air. The water heater can be a common household water heater for bathing, and energy can be saved to a certain extent because hot water in the water heater can be recycled and can also be used for bathing and the like.
The invention provides a new fan. The new fan includes: fan body, heater, evaporimeter and controller, heater and water heater series connection, new fan still includes: set up in the first temperature sensor at new fan return air inlet, heater, evaporimeter, water heater and first temperature sensor respectively with the controller electricity is connected, the controller is used for: when a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor at preset time intervals; comparing the return air temperature with the target temperature and a preset threshold value to obtain a first comparison result; and correspondingly controlling the heater, the water heater and the evaporator according to the first comparison result so as to control the air supply temperature of the fresh air fan. Through the mode, the heater in the fresh air machine can be connected with a water heater for bathing as common in families, hot water is prepared by the water heater to provide a heat source for the heater, and the hot water in the water heater can be recycled and can be used for bathing and the like, so that energy can be saved to a certain extent. When a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor at preset time intervals; the return air temperature is compared with the target temperature and the preset threshold value, the heater, the water heater and the evaporator are controlled according to the comparison result, when the outdoor return air temperature is very low, namely the measured return air temperature is lower than the preset threshold value, the heater, the water heater and the evaporator can be started, the water heater is enabled to produce hot water to provide a heat source for the heater, and therefore the ultralow-temperature outdoor return air is heated through the heater.
Further, the processor 1001 may call a control program for the temperature of the fresh air supply fan stored in the memory 1005, and further perform the following operations:
when the return air temperature is less than the preset threshold value and the duration time exceeds the preset duration time, the heater, the water heater and the evaporator are started, so that the air supply temperature of the fresh air fan is controlled;
when the return air temperature is greater than or equal to the preset threshold value and less than or equal to the target temperature and the duration time exceeds the preset duration time, the heater and the water heater are closed, and the evaporator is started, so that the air supply temperature of the fresh air fan is controlled;
and when the return air temperature is higher than the target temperature and the duration time exceeds the preset duration time, closing the heater, the water heater and the evaporator so as to control the air supply temperature of the fresh air fan.
Further, the processor 1001 may call a control program for the temperature of the fresh air supply fan stored in the memory 1005, and further perform the following operations:
when the new fan receives a heating instruction, acquiring the air supply temperature of the heater sent by a second temperature sensor;
comparing the air supply temperature of the heater with the preset threshold value to obtain a second comparison result;
and correspondingly adjusting the wind gear of the new fan according to the second comparison result so as to control the air supply temperature of the new fan.
Further, the processor 1001 may call a control program for the temperature of the fresh air supply fan stored in the memory 1005, and further perform the following operations:
and correspondingly adjusting the opening of the electronic expansion valve according to the second comparison result so as to control the air supply temperature of the fresh air fan.
Referring to fig. 3, fig. 3 is a schematic flow chart of a method for controlling an air supply temperature of a new air blower according to a first embodiment of the present invention.
In the embodiment of the invention, the control method of the air supply temperature of the fresh air fan comprises the following steps:
step S10, when a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor at preset time intervals;
in the embodiment of the present invention, the method for controlling the supply air temperature of the fresh air fan is applied to the fresh air fan shown in fig. 1, but of course, in a specific embodiment, the fresh air fan may also be a single device. For convenience of description, the embodiment of the present invention is described by taking the fresh air machine shown in fig. 1 as an example.
In the embodiment of the invention, when the controller in the fresh air machine receives the heating instruction, the target temperature T set by a user is obtained1And every preset time t1Acquiring the return air temperature T sent by the first temperature sensor2I.e., the outdoor return air temperature. The heating instruction can be that when a user starts a heating mode through remote control of the air conditioner, and a controller in the air conditioner receives the instruction of the user, the controller in the air conditioner sends the heating instruction to a controller in the fresh air machine. The first temperature sensor is providedAnd the air return device is arranged at an air return opening of the fresh air fan and used for detecting the outdoor air return temperature and sending the air return temperature to the controller.
Step S20, comparing the return air temperature with the target temperature and a preset threshold value to obtain a first comparison result;
and step S30, controlling the heater, the water heater and the evaporator according to the first comparison result, thereby controlling the air supply temperature of the fresh air fan.
In an embodiment of the invention, the controller will obtain the return air temperature T2With the target temperature T set by the user1And a preset threshold value T3And comparing, obtaining a first comparison result according to the size relation between the indoor air and the outdoor air, and controlling the heater, the water heater and the evaporator according to the first comparison result, so that the outdoor return air is heated to different degrees, the air supply temperature of the fresh air fan is controlled, and the air supply temperature reaches the target temperature set by a user. It should be noted that the heater of the fresh air fan is connected in series with the water heater, so that the water heater produces hot water to provide a heat source for the heater, and the heater heats the ultra-low temperature outdoor return air. The water heater can be a common household water heater for bathing, and energy can be saved to a certain extent because hot water in the water heater can be recycled and can also be used for bathing and the like.
Specifically, please refer to fig. 4, fig. 4 is a detailed flowchart illustrating a flow of controlling the heater, the water heater, and the evaporator according to the first comparison result, so as to control the air temperature of the fresh air blower according to the embodiment of the present invention. The preset threshold is less than the target temperature, and at this time, step S30 includes:
step S31, when the return air temperature is less than the preset threshold value and the duration time exceeds the preset duration time, the heater, the water heater and the evaporator are started, so that the air supply temperature of the fresh air fan is controlled;
step S32, when the return air temperature is greater than or equal to the preset threshold value, is less than or equal to the target temperature and exceeds the preset duration time, the heater and the water heater are closed, and the evaporator is opened, so that the air supply temperature of the fresh air fan is controlled;
and step S33, when the return air temperature is higher than the target temperature and the duration time exceeds the preset duration time, the heater, the water heater and the evaporator are closed, so that the air supply temperature of the fresh air fan is controlled.
Specifically, the preset threshold value T is because most of the fresh air fans in the current industry can only operate in the interval of return air temperature of more than-5 ℃, and the temperature of-5 ℃ is a temperature which makes the human body feel cold and uncomfortable3The temperature may be set to-5 deg.C, or may be set to any other value from-15 deg.C to 5 deg.C, and the preset threshold value is smaller than the target temperature. In the specific embodiment, a corresponding page can be displayed to be set by a user. For convenience of illustration, the preset threshold T is used in the embodiment3The temperature is-5 ℃ for illustration.
When the return air temperature is less than the preset threshold value, namely T2-5 ℃ below zero, and when the duration time exceeds the preset duration time t, the heater, the water heater and the evaporator are simultaneously started to heat because the outdoor return air temperature is very low, so that the return air temperature is quickly increased, and the air supply temperature of the fresh air fan is controlled to quickly reach the target temperature set by a user. It should be noted that, when the water heater is turned on, the flow switch and the circulation pump shown in fig. 1 need to be turned on, and the water replenishing valve can be opened if necessary, so that the water heater produces hot water to provide a heat source for the heater, and the hot water circulates in the pipeline, so that the ultra-low temperature outdoor return air is heated by the heater. In a specific embodiment, the flow switch can be adjusted according to the difference value between the return air temperature and a preset threshold value of minus 5 ℃, so as to control the water speed and further adjust the heating speed of the outdoor return air, for example, when the return air temperature is minus 20 ℃ to minus 15 ℃, namely the difference value between the return air temperature and the preset threshold value of minus 5 ℃ is 10 ℃ to 15 ℃, the flow switch can be controlled to adopt a large-flow mode; when the return air temperature is-15 ℃ to-10 ℃, namely the difference value between the return air temperature and a preset threshold value of-5 ℃ is 5 ℃ to 10 ℃, the flow switch can be controlled to adopt a large-flow mode; when the return air temperature is-10 to-5 ℃, namely the difference value between the return air temperature and the preset threshold value of-5 ℃ is 0 to 5 ℃, the flow switch can be controlledA low flow mode is used. In addition, the preset duration t is less than the preset time t1。
When the return air temperature is greater than or equal to the preset threshold and less than or equal to the target temperature, namely T is greater than or equal to minus 5 ℃ ≤2≤T1And when the duration time exceeds the preset duration time t, because the outdoor return air temperature is lower at the moment, but not too many heating sources are needed, the heater and the water heater can be closed, and only the evaporator in the fresh air machine is started to heat the outdoor return air. At this time, the flow switch, the circulating pump and the water replenishing valve are also closed at the same time. Of course, in particular embodiments, the heater and the water heater may be turned on and the evaporator may be turned off.
When the return air temperature is greater than the target temperature, i.e. T2＞T1And when the duration time exceeds the preset duration time t, because the outdoor return air temperature exceeds the target temperature set by the user at the moment, the heater, the water heater and the evaporator are closed without heating the outdoor return air, and of course, the flow switch, the circulating pump and the water replenishing valve are also closed at the same time.
The invention provides a method for controlling the air supply temperature of a fresh air fan. The method is applied to a fresh air machine, the fresh air machine comprises a fan body, a heater, an evaporator and a controller, the heater is connected with the water heater in series, and the fresh air machine further comprises: the control method comprises the following steps of setting a first temperature sensor at a return air inlet of the fresh air fan, and electrically connecting the heater, the evaporator, the water heater and the first temperature sensor with the controller respectively, wherein the control method for the air supply temperature of the fresh air fan comprises the following steps: when a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor at preset time intervals; comparing the return air temperature with the target temperature and a preset threshold value to obtain a first comparison result; and correspondingly controlling the heater, the water heater and the evaporator according to the first comparison result so as to control the air supply temperature of the fresh air fan. Through the mode, the heater in the fresh air machine can be connected with a water heater for bathing as common in families, hot water is prepared by the water heater to provide a heat source for the heater, and the hot water in the water heater can be recycled and can be used for bathing and the like, so that energy can be saved to a certain extent. When a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor at preset time intervals; the return air temperature is compared with the target temperature and the preset threshold value, the heater, the water heater and the evaporator are controlled according to the comparison result, when the outdoor return air temperature is very low, namely the measured return air temperature is lower than the preset threshold value, the heater, the water heater and the evaporator can be started, the water heater is enabled to produce hot water to provide a heat source for the heater, and therefore the ultralow-temperature outdoor return air is heated through the heater.
Referring to fig. 5, fig. 5 is a schematic flow chart of a control method for air supply temperature of a fresh air blower according to a second embodiment of the present invention.
Based on the first embodiment shown in fig. 3, step S10 may further include:
step S100, when a heating instruction is received, acquiring a target temperature set by a user, and acquiring return air temperature and heater air supply temperature respectively sent by the first temperature sensor and the second temperature sensor at preset time intervals;
in the embodiment of the invention, when the controller in the fresh air machine receives the heating instruction, the target temperature T set by a user is obtained1And return air temperature T2While obtaining the supply air temperature T of the heater4. The air supply temperature T of the heater4The temperature of the outdoor return air heated by the heater is detected by a second temperature sensor arranged between the heater and the evaporator.
At this time, step S20 may further include:
step S200, comparing the return air temperature with the target temperature and a preset threshold value, and comparing the air supply temperature of the heater with the preset threshold value to respectively obtain a first comparison result and a second comparison result;
step S30 may include:
and step S300, controlling the heater, the water heater and the evaporator according to the first comparison result, and adjusting the wind gear of the fresh air fan according to the second comparison result, so as to control the air supply temperature of the fresh air fan.
In an embodiment of the invention, the controller will obtain the return air temperature T2With the target temperature T set by the user1And a preset threshold value T3Comparing, and obtaining a first comparison result according to the size relationship and the duration time of each interval range, thereby correspondingly controlling the heater, the water heater and the evaporator according to the first comparison result, and simultaneously, the controller also controls the air supply temperature T of the heater4With a predetermined threshold value T3And comparing, and obtaining a second comparison result according to the size relationship between the wind shield and the new fan and the duration time of each interval range, so that the wind shield of the new fan is correspondingly adjusted according to the second comparison result. Compare in the first embodiment that fig. 3 shows, control heater, water heater and evaporimeter have been adopted to this embodiment, combine together with the mode of adjustment new fan wind shelves, on the one hand through opening and closing of control heater, water heater and evaporimeter, carry out the heating of different degrees to outdoor return air, on the other hand through adjustment new fan wind shelves, can control the temperature that the wind blew off, air supply temperature promptly to combine both to control and adjust, can further more stable control new fan air supply temperature, promote user experience.
When the temperature of the air supplied by the heater is less than the preset threshold value, namely T4When the temperature is lower than minus 5 ℃ and the duration time exceeds the preset time t, the wind gear of the fresh air fan is adjusted to be reduced by one gear, so that the air supply temperature is increased. This is because the air volume can influence the air temperature to a certain extent, and in the heating mode, the air volume is reduced, and the air temperature will rise, that is, the air temperature will rise to a certain extent.
When the air supply temperature of the heater is less than the preset valueThreshold value, i.e. T4And when the temperature is more than or equal to-5 ℃ and the duration time exceeds the preset time t, keeping the current wind gear of the new fan.
Referring to fig. 6, fig. 6 is a schematic flow chart of a method for controlling an air supply temperature of a fresh air blower according to a third embodiment of the present invention.
Based on the second embodiment shown in fig. 5, the method for controlling the supply air temperature of the new air blower may further include:
and S310, controlling the heater, the water heater and the evaporator according to the first comparison result, and adjusting the wind shield of the fresh air fan and the opening degree of the electronic expansion valve according to the second comparison result, so as to control the air supply temperature of the fresh air fan.
Compared to the second embodiment shown in fig. 5, the present embodiment is different in that: and adjusting the opening degree of the electronic expansion valve according to the second comparison result while correspondingly adjusting the wind shield of the fresh air fan according to the second comparison result. The adjustment of the opening of the electronic expansion valve can change the content of the refrigerant in the evaporator, and the larger the opening is, the larger the content of the refrigerant is, so that the lifting speed of the return air temperature is accelerated.
Specifically, please refer to fig. 7, fig. 7 is a schematic view illustrating a detailed flow of adjusting the wind level of the fresh air machine and the opening degree of the electronic expansion valve according to the second comparison result in the embodiment of the present invention. Step S310 includes:
step S311, when the air supply temperature of the heater is less than the preset threshold value and the duration time exceeds the preset time, adjusting the air level of the fresh air fan to reduce by one level, and adjusting the opening degree of the electronic expansion valve to increase by the preset opening degree;
and step S312, when the air supply temperature of the heater is greater than or equal to the preset threshold value and the duration time exceeds the preset time, keeping the wind level of the fresh air fan and the opening degree of the electronic expansion valve.
In the embodiment of the invention, the wind level of the fresh air fan and the opening degree of the electronic expansion valve are adjusted according to the second comparison result while the heater, the water heater and the evaporator are controlled according to the first comparison result. The embodiment of controlling the heater, the water heater and the evaporator according to the first comparison result has been described in steps 31 to 33, and is not described herein again.
When the air supply temperature of the heater is less than the preset threshold value, namely T4When the temperature is lower than minus 5 ℃ and the duration time exceeds the preset time t, adjusting the air gear of the fresh air fan to reduce the first gear, thereby reducing the air quantity, improving the air supply temperature, adjusting the opening degree of the electronic expansion valve to increase the preset opening degree, thereby increasing the brightness of the refrigerant, accelerating the increase speed of the return air temperature, and finally controlling the air supply temperature of the fresh air fan by combining the adjustment of the air gear of the fresh air fan and the opening degree of the electronic expansion valve.
When the air supply temperature of the heater is greater than or equal to the preset threshold value, namely T4And when the temperature is more than or equal to-5 ℃ and the duration time exceeds the preset time t, keeping the wind gear of the fresh air fan and the opening degree of the electronic expansion valve.
In the specific embodiment, only the damper of the new blower may be adjusted according to the second comparison result, or only the opening degree of the electronic expansion valve may be adjusted according to the second comparison result as in step S300 in the second embodiment. For example, when the heater supply air temperature is less than the preset threshold, i.e., T4And when the temperature is lower than minus 5 ℃ and the duration time exceeds the preset time t, adjusting the opening degree of the electronic expansion valve to increase the preset opening degree. When the air supply temperature of the heater is greater than or equal to the preset threshold value, namely T4And when the temperature is more than or equal to-5 ℃ and the duration time exceeds the preset time t, keeping the current opening degree of the electronic expansion valve.
The invention further provides a computer-readable storage medium, in which a control program of the air supply temperature of the new air blower is stored, and when the control program of the air supply temperature of the new air blower is executed by a processor, the steps of the control method of the air supply temperature of the new air blower according to any one of the above embodiments are implemented.
The specific embodiment of the computer-readable storage medium of the present invention is substantially the same as the embodiments of the control method for the air supply temperature of the fresh air fan, and is not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides a new fan, its characterized in that, new fan includes: fan body, heater, evaporimeter and controller, heater and water heater series connection, new fan still includes: set up in the first temperature sensor in new fan return air inlet with set up in second temperature sensor between heater and the evaporimeter, heater, evaporimeter, water heater, first temperature sensor and second temperature sensor respectively with the controller electricity is connected, the controller is used for:
when a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor and the heater air supply temperature sent by the second temperature sensor at intervals of preset time, wherein the heater air supply temperature is the temperature of outdoor return air heated by the heater;
comparing the return air temperature with the target temperature and a preset threshold value to obtain a first comparison result, and comparing the air supply temperature of the heater with the preset threshold value to obtain a second comparison result;
and controlling the heater, the water heater and the evaporator according to the first comparison result, and adjusting the wind gear of the fresh air fan according to the second comparison result, so as to control the air supply temperature of the fresh air fan.
2. The new fan of claim 1, wherein the preset threshold is less than the target temperature, the controller further to:
when the return air temperature is less than the preset threshold value and the duration time exceeds the preset duration time, the heater, the water heater and the evaporator are started, so that the air supply temperature of the fresh air fan is controlled;
when the return air temperature is greater than or equal to the preset threshold value and less than or equal to the target temperature and the duration time exceeds the preset duration time, the heater and the water heater are closed, and the evaporator is started, so that the air supply temperature of the fresh air fan is controlled;
and when the return air temperature is higher than the target temperature and the duration time exceeds the preset duration time, closing the heater, the water heater and the evaporator so as to control the air supply temperature of the fresh air fan.
3. The fresh air machine of claim 1, further comprising: an electronic expansion valve connected in series with the evaporator, the electronic expansion valve being electrically connected with the controller, the controller further being configured to:
and correspondingly adjusting the opening of the electronic expansion valve according to the second comparison result so as to control the air supply temperature of the fresh air fan.
4. A method for controlling the air supply temperature of a fresh air fan is applied to the fresh air fan as claimed in any one of claims 1 to 3, and comprises the following steps:
when a heating instruction is received, acquiring a target temperature set by a user, and acquiring the return air temperature sent by the first temperature sensor and the heater air supply temperature sent by the second temperature sensor at intervals of preset time, wherein the heater air supply temperature is the temperature of outdoor return air heated by the heater;
comparing the return air temperature with the target temperature and a preset threshold value to obtain a first comparison result, and comparing the air supply temperature of the heater with the preset threshold value to obtain a second comparison result;
and controlling the heater, the water heater and the evaporator according to the first comparison result, and adjusting the wind gear of the fresh air fan according to the second comparison result, so as to control the air supply temperature of the fresh air fan.
5. The method for controlling the temperature of the air supplied by the fresh air machine as claimed in claim 4, wherein the step of controlling the temperature of the air supplied by the fresh air machine by controlling the heater, the water heater and the evaporator correspondingly according to the first comparison result comprises the steps of:
when the return air temperature is less than the preset threshold value and the duration time exceeds the preset duration time, the heater, the water heater and the evaporator are started, so that the air supply temperature of the fresh air fan is controlled;
when the return air temperature is greater than or equal to the preset threshold value and less than or equal to the target temperature and the duration time exceeds the preset duration time, the heater and the water heater are closed, and the evaporator is started, so that the air supply temperature of the fresh air fan is controlled;
and when the return air temperature is higher than the target temperature and the duration time exceeds the preset duration time, closing the heater, the water heater and the evaporator so as to control the air supply temperature of the fresh air fan.
6. The method for controlling the temperature of the air supplied by the fresh air machine as claimed in claim 4, wherein the fresh air machine further comprises an electronic expansion valve, and the step of controlling the heater, the water heater and the evaporator according to the first comparison result and adjusting the air level of the fresh air machine according to the second comparison result so as to control the temperature of the air supplied by the fresh air machine comprises the following steps:
and controlling the heater, the water heater and the evaporator according to the first comparison result, and adjusting the wind level of the fresh air fan and the opening degree of the electronic expansion valve according to the second comparison result, so as to control the air supply temperature of the fresh air fan.
7. The method for controlling the air supply temperature of the fresh air fan as claimed in claim 6, wherein the step of adjusting the air level of the fresh air fan and the opening degree of the electronic expansion valve according to the second comparison result comprises:
when the air supply temperature of the heater is smaller than the preset threshold value and the duration time exceeds the preset time, adjusting the air gear of the fresh air fan to reduce by one gear, and adjusting the opening of the electronic expansion valve to increase by the preset opening;
and when the air supply temperature of the heater is greater than or equal to the preset threshold value and the duration time exceeds the preset time, keeping the air gear of the fresh air fan and the opening degree of the electronic expansion valve.
8. A computer-readable storage medium, wherein a control program of fresh air fan supply air temperature is stored on the computer-readable storage medium, and when the control program of fresh air fan supply air temperature is executed by a processor, the steps of the method for controlling fresh air fan supply air temperature according to any one of claims 4 to 7 are implemented.
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| CN108759015A (en) * | 2018-05-18 | 2018-11-06 | 广东美的暖通设备有限公司 | The preheating control method and system of new wind turbine |
| 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 |
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