CN110686361A

CN110686361A - Fresh air machine control method, fresh air machine and computer readable storage medium

Info

Publication number: CN110686361A
Application number: CN201910982401.4A
Authority: CN
Inventors: 李骏
Original assignee: Midea Group Co Ltd; GD Midea Heating and Ventilating Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Heating and Ventilating Equipment Co Ltd; Guangdong Midea HVAC Equipment Co Ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-01-14

Abstract

The invention discloses a fresh air machine control method, a fresh air machine and a computer readable storage medium, wherein the fresh air machine control method comprises the following steps: when a starting instruction of a reheating device of a new fan is received, acquiring a first energy demand value of the current new fan; controlling the reheating device to start operation; the method comprises the steps of acquiring a temperature value of a liquid side coil of a fresh air fan at preset intervals, determining an energy demand value of the fresh air fan based on the temperature value of the liquid side coil and a first energy demand value, controlling the fresh air fan based on the energy demand value, and controlling the energy demand value of a target area based on the temperature value of the liquid side coil of the fresh air fan, so that the normal operation of the fresh air fan is ensured, and the use comfort level of an indoor user is met.

Description

Fresh air machine control method, fresh air machine and computer readable storage medium

Technical Field

The invention relates to the field of fresh air machine control, in particular to a fresh air machine control method, a fresh air machine and a computer readable storage medium.

Background

At present, the requirements of users on air conditioning systems are increasing, especially the requirements on indoor air quality are increasing, and therefore, new air handling systems are in use. When the outdoor environment load is low or the set air supply temperature is not reached and the fresh air fan is adjusted to the limit under the refrigeration mode, the reheating system of the fresh air fan controls the reheating device to heat the low-temperature air outlet of the fresh air fan, so that the indoor air supply temperature is output within the target air supply temperature range, and the use comfort of indoor users is met. When the reheating device of the existing new fan reheating system is started under the condition of low outdoor environment load, the air supply temperature at the rear side of the reheating device can be greatly increased, but the air supply temperature between the reheating device and the air outlet of the new fan cannot be known. In addition, due to the difference between the fresh air machine and the common indoor machine, the return air is the air led from the outside environment in the operation process of the fresh air machine, so the temperature of the return air cannot be changed in the reheating opening or closing operation process. However, when the outdoor environmental load is very low, the operation low pressure of the fresh air fan system is low, the temperature of the coil pipe of the fresh air fan is low, and the fresh air fan is easy to frost and freeze, and when the frost is serious, the fresh air fan can wait for air supply and defrost preferentially, so that the comfort of the system is affected.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention mainly aims to provide a fresh air fan control method, a fresh air fan and a computer readable storage medium, and aims to solve the technical problem that when the temperature of a coil of the fresh air fan is low, the coil is easy to frost and freeze.

In order to achieve the above object, the present invention provides a fresh air fan control method, including the steps of:

when a starting instruction of a reheating device of a new fan is received, acquiring a first energy demand value of the current new fan;

controlling the reheating device to start operation;

the method comprises the steps of obtaining a temperature value of a liquid side coil of a fresh air fan at intervals of preset time, determining an energy demand value of the fresh air fan based on the temperature value of the liquid side coil and the first energy demand value, and controlling the fresh air fan based on the energy demand value.

Preferably, an initial temperature value of the liquid side coil is obtained;

if the initial temperature value of the liquid side coil is greater than or equal to a first preset temperature value, acquiring the first temperature value of the liquid side coil after the operation of preset time;

if the first temperature value is greater than or equal to a second preset temperature value, increasing the first energy demand by a first preset energy demand to obtain a second energy demand, controlling the fresh air machine based on the second energy demand, and obtaining a second temperature value of the liquid side coil pipe after the operation for a preset time;

and if the second temperature value is greater than or equal to a second preset temperature value, taking the second energy demand value as the first energy demand value, continuing to increase the first energy demand value by a first preset energy demand value to obtain a second energy demand value, controlling the fresh air machine based on the second energy demand value, and acquiring a second temperature value of the liquid side coil pipe after the operation for a preset time, wherein the second preset temperature value is less than the first preset temperature value.

Preferably, a first energy demand difference value between the second energy demand value and the first energy demand value is obtained;

if the first energy demand difference value is larger than the maximum increase correction value, controlling the fresh air machine based on the first energy demand value;

and if the first energy demand difference value is smaller than or equal to the maximum increase correction value, controlling the fresh air machine based on the second energy demand value.

Preferably, if the second temperature value is smaller than a second preset temperature value and the second temperature value is greater than or equal to a third preset temperature value, the fresh air fan is controlled based on the second energy demand value, and the step of obtaining the second temperature value of the liquid side coil pipe after the operation for a preset time is continuously executed.

Preferably, if the second temperature value is smaller than a third preset temperature value, the second energy requirement is reduced by a second preset energy requirement to obtain a third energy requirement;

and taking the third energy demand as the second energy demand, controlling the fresh air machine based on the second energy demand, and continuously executing the step of obtaining a second temperature value of the liquid side coil pipe after the operation of the fresh air machine is carried out for a preset time, wherein the third preset value is smaller than the second preset value.

Preferably, a second energy demand difference value between the first energy demand value and the second energy demand value is obtained;

if the second energy demand difference value is larger than the maximum reduction correction value, taking the second energy demand value as the third energy demand value;

and if the second energy demand difference value is smaller than or equal to the maximum reduction correction value, reducing the second energy demand value by a second preset energy demand value to obtain a third energy demand value.

Preferably, if the energy demand value after the second energy demand value is reduced by a second preset energy demand value is greater than or equal to the minimum preset energy demand value, reducing the second energy demand value by the second preset energy demand value to obtain a third energy demand value;

and if the energy demand value after the second energy demand value is reduced by a second preset energy demand value is smaller than the minimum preset energy demand value, taking the second energy demand value as the third energy demand value.

Preferably, an initial temperature value of the liquid side coil is obtained;

if the initial temperature value of the liquid side coil is smaller than a third preset temperature value, acquiring a third temperature value of the liquid side coil after the operation of preset time;

if the third temperature value is smaller than a fourth preset temperature value, reducing the first energy demand by a first preset energy demand to obtain a fourth energy demand, controlling the fresh air machine based on the fourth energy demand, and obtaining a fourth temperature value of the liquid side coil pipe after the operation for a preset time;

if the fourth temperature value is smaller than a fourth preset temperature value, the fourth energy demand value is used as the first energy demand value, the first energy demand value is reduced by the first preset energy demand value continuously to obtain a fourth energy demand value, the fresh air machine is controlled based on the fourth energy demand value, and a fourth temperature value of the liquid side coil pipe after the operation preset time is obtained, wherein the third preset temperature value is smaller than the fourth preset temperature value.

Preferably, a third energy demand difference value between the first energy demand value and the fourth energy demand value is obtained;

if the third energy demand difference value is larger than the maximum reduction correction value, controlling the fresh air machine based on the first energy demand value;

and if the third energy demand difference value is smaller than or equal to the maximum reduction correction value, controlling the fresh air machine based on the fourth energy demand value.

Preferably, if the fourth energy demand is greater than the minimum energy demand, the fresh air machine is controlled based on the first energy demand;

and if the fourth energy requirement is less than or equal to the minimum energy requirement, controlling the fresh air machine based on the fourth energy requirement.

Preferably, if the fourth temperature value is less than a first preset temperature value and the fourth temperature value is greater than or equal to a fourth preset temperature value, the fresh air fan is controlled based on the fourth energy demand value, and the step of obtaining the fourth temperature value of the liquid side coil pipe after the operation for a preset time is continuously executed.

Preferably, if the fourth temperature value is greater than or equal to a first preset temperature value, the fourth energy requirement is increased by a first preset energy requirement to obtain a fifth energy requirement;

and taking the fifth energy requirement as the fourth energy requirement, continuing to execute the step of controlling the fresh air machine based on the fourth energy requirement and acquiring a fourth temperature value of the liquid side coil pipe after the operation is carried out for a preset time.

Preferably, a fourth energy requirement difference value between the fourth energy requirement value and the first energy requirement value is obtained;

if the fourth energy demand difference value is larger than the maximum increase correction value, taking the fourth energy demand value as the fifth energy demand value;

and if the fourth energy demand difference value is smaller than or equal to the maximum increase correction value, increasing the fourth energy demand value by a first preset energy demand value to obtain a fifth energy demand value.

Preferably, if the air supply temperature of the fresh air fan reaches the preset temperature, the reheating device is disconnected, the energy demand of the fresh air fan is determined based on the air supply temperature of the fresh air fan and the first energy demand, and the fresh air fan is controlled based on the energy demand.

In addition, in order to achieve the above object, the present invention also provides a new fan, including: the control system comprises a memory, a processor and a fresh air control program which is stored on the memory and can run on the processor, wherein when the fresh air control program is executed by the processor, the steps of the fresh air control method are realized.

In addition, in order to achieve the above object, the present invention further provides a computer readable storage medium, where a new fan control program is stored, and the new fan control program, when executed by a processor, implements the steps of the new fan control method described above.

In the embodiment of the invention, when a starting instruction of a reheating device of a fresh air fan is received, a first energy demand of the current fresh air fan is obtained, the reheating device is controlled to start and operate, a temperature value of a liquid side coil of the fresh air fan is obtained at intervals of preset time, the energy demand of the fresh air fan is determined based on the temperature value of the liquid side coil and the first energy demand, and the fresh air fan is controlled based on the energy demand. The reheating device is started through control to ensure that the air supply temperature reaches the preset air supply temperature, and the liquid side coil temperature sensing bulb of the new fan coil needs to be controlled aiming at a target area, so that the situation that the standby air supply of the new fan is preferentially defrosted due to low temperature of the liquid side coil of the new fan is avoided, the normal operation of the new fan is ensured, and the use comfort of indoor users is met.

Drawings

FIG. 1 is a schematic diagram of a new fan in a hardware operating environment according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart of a first embodiment of a fresh air handling machine control method according to the present invention;

FIG. 3 is a schematic view of the control rules of the new fan 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.

As shown in fig. 1, fig. 1 is a schematic view of a new fan structure of a hardware operating environment according to an embodiment of the present invention.

As shown in fig. 1, the new blower may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. 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.

Optionally, the new fan may further include a camera, a Radio Frequency (RF) circuit, a sensor, an audio circuit, a WiFi module, and the like. Such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor, a proximity sensor, and the like, and certainly, the new air blower may further be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which are not described herein again.

Those skilled in the art will appreciate that the new fan configuration shown in fig. 1 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. 1, the memory 1005, which is a kind of computer storage medium, may include an operating system, a network communication module, a user interface module, and a new fan control program therein.

In the new fan structure shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be used to invoke a new fan control program stored in the memory 1005.

In this embodiment, the fresh air fan control device includes: the system comprises a memory 1005, a processor 1001 and a new fan control program stored on the memory 1005 and operable on the processor 1001, wherein when the processor 1001 calls the new fan control program stored in the memory 1005, the following operations are performed:

controlling the reheating device to start operation;

Further, the processor 1001 may call a new fan control program stored in the memory 1005, and further perform the following operations:

acquiring an initial temperature value of the liquid side coil pipe;

acquiring a first energy demand difference value of the second energy demand value and the first energy demand value;

and if the second temperature value is smaller than a second preset temperature value and the second temperature value is larger than or equal to a third preset temperature value, controlling the fresh air fan based on the second energy demand value, and continuing to execute the step of obtaining the second temperature value of the liquid side coil pipe after the operation preset time.

if the second temperature value is smaller than a third preset temperature value, reducing the second energy demand value by a second preset energy demand value to obtain a third energy demand value;

acquiring a second energy demand difference value of the first energy demand value and the second energy demand value;

if the energy demand value after the second energy demand value is reduced by a second preset energy demand value is larger than or equal to the minimum preset energy demand value, reducing the second energy demand value by the second preset energy demand value to obtain a third energy demand value;

acquiring an initial temperature value of the liquid side coil pipe;

acquiring a third energy demand difference value between the first energy demand value and the fourth energy demand value;

if the fourth energy demand value is larger than the minimum energy demand value, controlling the fresh air machine based on the first energy demand value;

and if the fourth temperature value is smaller than a first preset temperature value and is greater than or equal to a fourth preset temperature value, controlling the fresh air fan based on the fourth energy demand value, and continuing to execute the step of obtaining the fourth temperature value of the liquid side coil pipe after the operation is carried out for a preset time.

if the fourth temperature value is greater than or equal to a first preset temperature value, increasing the fourth energy demand by a first preset energy demand to obtain a fifth energy demand;

acquiring a fourth energy demand difference value between the fourth energy demand value and the first energy demand value;

and if the air supply temperature of the fresh air fan reaches the preset temperature, disconnecting the reheating device, determining the energy demand value of the fresh air fan based on the air supply temperature of the fresh air fan and the first energy demand value, and controlling the fresh air fan based on the energy demand value.

The invention also provides a fresh air fan control method, and referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the fresh air fan control method of the invention.

S100, when a starting instruction of a reheating device of a fresh air fan is received, acquiring a first energy demand value of a reheating system of the fresh air fan;

step S200, controlling the reheating device to start operation;

in this embodiment, in the new blower reheating system, optionally, the new blower and the reheating device are connected through one dry contact or a plurality of touch points, and the operation of the new blower reheating system is controlled by controlling the on-off state of the dry contact between the new blower and the reheating device, wherein the heat of the reheating device can be introduced into a high-temperature refrigerant of the heat pump system, and can also be any third-party heat source as a reheating source. When the outdoor environment load is lower than the preset outdoor environment load, if the air supply temperature of the fresh air fan is detected not to be in the preset temperature interval and the fresh air fan is regulated to the limit, a starting instruction of starting the reheating device by the fresh air fan is sent. Before reheating device starts operation, the ability of new fan need to be revised is based on new fan air outlet temperature and can need to be revised, optionally, the air supply exit of new fan system is equipped with air supply temperature sensing package or temperature sensor, and the temperature that this air supply temperature sensing package or temperature sensor recorded is marked as Tf, based on the temperature interval that new fan air outlet temperature Tf was located, carries out the accumulation correction to this new fan ability need value.

When the load of the current outdoor environment is low, it is detected that the air supply temperature of the new fan does not reach the preset air supply temperature, specifically, when the new fan is in a cooling mode, the actual air supply temperature of the new fan is lower than the preset air supply temperature, and the adjustment of the current new fan reaches the limit, then a starting instruction of the reheating device is sent out, when the starting instruction of the reheating device is received, a first energy demand value of the current new fan is obtained, specifically, before the reheating device is started, the energy demand value of the new fan, which needs to be accumulated and corrected, is obtained based on the temperature Tf of the air outlet of the new fan, and optionally, the accumulated and corrected energy demand value is used as the first energy demand value after the reheating device is started and operated.

And the reheating device is controlled to start and operate so as to heat the temperature of the air outlet of the fresh air fan and enable the air supply temperature to reach the preset air supply temperature.

Step S300, acquiring a temperature value of a liquid side coil of the fresh air fan at intervals of preset time, determining an energy demand value of a reheating system of the fresh air fan based on the temperature value of the liquid side coil and the first energy demand value, and controlling the fresh air fan based on the energy demand value.

In this embodiment, optionally, the fresh air fan system includes an air-air heat recovery device, a solution circulation device, a reheating device, an exhaust part, and a fresh air part. The reheating device comprises a compressor, an evaporator, condensing equipment and a throttling component, wherein a liquid side coil of the fresh air fan is positioned at the condensing equipment in the fresh air fan reheating device, after the reheating device is started, a temperature value of the liquid side coil of the fresh air fan is obtained at preset time intervals, then, an energy demand value of the fresh air fan is determined based on the temperature value of the liquid side coil and a first energy demand value, and the fresh air fan is controlled based on the energy demand value so as to ensure the normal operation of the fresh air fan.

Specifically, as shown in fig. 3, Ty is a liquid side coil temperature value, C, D, E, F is a first preset temperature value, a second preset temperature value, a third preset temperature value, and a fourth preset temperature value, A, B is a first preset energy demand value and a second preset energy demand value, respectively, that is, during the operation, a liquid side coil temperature value is determined at preset time intervals from a time corresponding to an initial temperature value of the liquid side coil, and the new fan is corrected based on a temperature interval range in which the liquid side coil temperature value is located, wherein optionally, a determination direction is defined before the new fan is corrected based on the temperature interval range in which the liquid side coil temperature value is located, as shown in fig. 3, a determination direction is determined from an upper interval to a lower interval or a determination direction is determined from a lower interval to an upper interval, and the temperature interval in which the liquid side coil temperature is located is different in the determination direction, the performance based on the temperature of the liquid side coil can be modified differently.

Specifically, step S300 includes:

step S301, acquiring an initial temperature value of the liquid side coil pipe;

step S302, if the initial temperature value of the liquid side coil is greater than or equal to a first preset temperature value, acquiring the first temperature value of the liquid side coil after the operation for a preset time;

step S303, if the first temperature value is greater than or equal to a second preset temperature value, increasing the first energy demand by a first preset energy demand to obtain a second energy demand, controlling the fresh air machine based on the second energy demand, and obtaining a second temperature value of the liquid side coil pipe after the operation for a preset time;

step S304, if the second temperature value is greater than or equal to a second preset temperature value, the second energy demand value is used as the first energy demand value, the first energy demand value is increased by a first preset energy demand value to obtain a second energy demand value, the fresh air machine is controlled based on the second energy demand value, and a second temperature value of the liquid side coil pipe after the operation for a preset time is obtained, wherein the second preset temperature value is smaller than the first preset temperature value.

In this step, the rule of the fresh air fan control method is to determine an interval from an upper interval to a lower interval in fig. 3, and obtain an initial temperature value of the liquid side coil, as shown in fig. 3, if the initial interval of the initial temperature value of the liquid side coil after the reheating device is turned on is the upper interval in fig. 3, that is, the initial temperature value of the liquid side coil is greater than or equal to a first preset temperature value, where the first preset temperature value may be denoted as C, optionally, the first preset temperature value C may be 6 ℃, and obtain a first temperature value of the liquid side coil after a preset operation time, where the preset operation time may be 2 minutes, that is, obtain the first temperature value when the preset operation time passes by 2 minutes after the initial temperature value is determined to be greater than or equal to C, and determine a temperature interval where the first temperature value is located in fig. 1.

If the first temperature value is greater than or equal to a second preset temperature value, where the second preset temperature value may be recorded as D and D is less than C, optionally, the second preset temperature value D may be 5 ℃. After the operation is carried out for 2 minutes in the preset time, the detected temperature value of the coil pipe on the liquid side of the new machine coil pipe is greater than or equal to a second preset temperature value D, the first energy requirement is increased by the first preset energy requirement to obtain a second energy requirement, the new machine fan is controlled based on the second energy requirement, and the second temperature value of the operation time passing through the preset operation time is continuously obtained after the moment, wherein the first preset energy requirement can be set to be A, and the value of the A can be 1.

If the first temperature value is less than a third preset temperature value, where the third preset temperature value may be denoted as F, and F is less than C, optionally, the second preset temperature value F may be 1 ℃. After the operation is carried out for 2 minutes in the preset time, the detected temperature value of the coil on the liquid side of the new machine coil is smaller than a third preset temperature value F, the first energy requirement is reduced by a second preset energy requirement to obtain a second energy requirement, the new fan is controlled based on the second energy requirement, and the second temperature value of the running time passing through the preset running time at the moment is continuously obtained, wherein the second preset energy requirement can be set to be B, and the value of B can be 1.

If the detected second temperature value of the liquid side coil of the new machine coil is still continuously greater than or equal to the second preset temperature value C after the operation is carried out for 2 minutes within the preset time, the second energy requirement is used as the first energy requirement, the first energy requirement is added to the first preset energy requirement to obtain the second energy requirement, the new fan is controlled based on the second energy requirement, and the second temperature value of the liquid side coil after the operation is carried out for the preset time is obtained.

If the first temperature value is smaller than a second preset temperature value and the first temperature value is larger than or equal to a third preset temperature value, wherein the third preset temperature value can be recorded as F, the new fan is controlled based on the first energy demand value, the second temperature value of the liquid side coil pipe after the operation preset time is obtained, if the second temperature value is still smaller than the second preset temperature value and the first temperature value is larger than or equal to the third preset temperature value, the second temperature value is used as the first temperature value, the step of controlling the new fan based on the first energy demand value is continuously executed, and the second temperature value of the liquid side coil pipe after the operation preset time is obtained.

It can be understood that, if the initial interval of the initial temperature value Ty of the liquid side coil after the reheating device is turned on is within the interval range where Ty in fig. 3 is greater than or equal to D being less than C, and the first temperature value of the liquid side coil after the operation of the preset time is still within the interval range where Ty is greater than or equal to D being less than C, the first energy requirement is increased by the first preset energy requirement to obtain the second energy requirement if the correction rule of the fresh air fan control method is determined from top to bottom in fig. 3, and the fresh air fan is controlled based on the second energy requirement. If the correction rule of the fresh air fan control method is judged from the lower side to the upper side in fig. 3, the first energy demand is not subjected to addition and subtraction correction, and the fresh air fan is controlled based on the first energy demand.

Further, step S304 further includes:

step S305, acquiring a first energy demand difference value of the second energy demand value and the first energy demand value;

step S306, if the first energy demand difference value is larger than the maximum increase correction value, controlling the fresh air machine based on the first energy demand value;

step S307, if the first energy demand difference value is smaller than or equal to the maximum increase correction value, the fresh air machine is controlled based on the second energy demand value.

In the step, if the temperature value of the liquid side coil detected every preset operation time is continuously in the temperature interval range which is greater than or equal to D, the first preset energy requirement value is continuously added to the new fan for correction, understandably, the Ty of the liquid side coil needs to be corrected to have an upper limit range, namely + G, so as to avoid excessive energy requirement value for correction, in the process of energy requirement value correction, whether the current accumulated value of the energy requirement value reaches the maximum increase correction value G is judged, namely whether the corrected accumulated value of the first energy requirement value reaches the maximum increase correction value G is judged, the first energy requirement difference value between the second energy requirement value and the first energy requirement value is obtained every time the energy requirement value needs to be corrected, if the temperature value of the liquid side coil detected during the preset operation time is greater than or equal to D, the first energy requirement difference value is greater than the maximum increase correction value G, the new fan is controlled based on the first energy requirement value, the first energy requirement value is not increased by a first preset energy requirement value, if the first energy requirement difference value is smaller than or equal to the maximum increase correction value G, the first energy requirement value is increased by the first preset energy requirement value when the temperature value of the liquid side coil detected in the operation preset time is larger than or equal to D, so that a second energy requirement value is obtained, and the fresh air machine is controlled based on the second energy requirement value.

In this embodiment, when a starting instruction of the reheating device is received, a first energy requirement value of the current fresh air fan is acquired, then the reheating device is controlled to start and operate, a temperature value of a liquid side coil of the fresh air fan is acquired at preset time intervals, the energy requirement value of the fresh air fan is determined based on the temperature value and the first energy requirement value of the liquid side coil, the fresh air fan is controlled based on the energy requirement value, the liquid side coil temperature sensing package of the fresh air fan coil is controlled aiming at a target area, normal operation of the fresh air fan is guaranteed, and using comfort of an indoor user is met.

Based on the first embodiment, a second embodiment of the method for controlling a fresh air machine according to the present invention is provided, in this embodiment, after step S303, the method further includes:

step S308, if the second temperature value is smaller than a second preset temperature value and the second temperature value is greater than or equal to a third preset temperature value, controlling the fresh air machine based on the second energy demand value, and continuing to execute the step of obtaining the second temperature value of the liquid side coil pipe after the operation for the preset time.

In this embodiment, if the second temperature value is less than the second preset temperature value and is greater than or equal to a third preset temperature value, where the third preset temperature value may be denoted as F and F is less than D, optionally, the third preset temperature value F may be 1 ℃, the second energy requirement value is not corrected, that is, the new fan is controlled based on the second energy requirement value, specifically, it is detected that the temperature value of the liquid side coil is continuously less than the second preset temperature value at every preset operation time, and when the temperature value is greater than or equal to the third preset temperature value, the second energy requirement value is not corrected by addition or subtraction, the new fan is controlled based on the second energy requirement value, in this interval range, the temperature value of the liquid side coil may be changed by floating up and down, if the temperature value of the liquid side coil is greater than or equal to D after the preset operation time, the above step S303 is continuously performed, which is not described herein again.

Further, after step S303, the method further includes:

step S309, if the second temperature value is smaller than a third preset temperature value, reducing the second energy demand value by a second preset energy demand value to obtain a third energy demand value;

step S310, taking the third energy demand as the second energy demand, controlling the fresh air machine based on the second energy demand, and continuing to execute the step of obtaining a second temperature value of the liquid side coil pipe after the operation preset time, wherein the third preset value is smaller than the second preset value.

In this step, it can be understood that, if the second temperature value is less than the third preset temperature value, the second energy requirement is decreased by the second preset energy requirement to obtain the third energy requirement, the third energy requirement is used as the second energy requirement, and the step of controlling the fresh air machine based on the second energy requirement and obtaining the second temperature value of the liquid side coil after the operation for the preset time is continuously performed.

If the second temperature value is still smaller than the third preset temperature value after the step of controlling the fresh air machine based on the second energy requirement and acquiring the second temperature value of the liquid side coil pipe after the operation preset time is continuously executed, the step of taking the third energy requirement as the second energy requirement, and the step of controlling the fresh air machine based on the second energy requirement and acquiring the second temperature value of the liquid side coil pipe after the operation preset time is continuously executed.

In this embodiment, if the second temperature value is smaller than the second preset temperature value and the second temperature value is greater than or equal to the third preset temperature value, the fresh air machine is controlled based on the second energy demand value, and the step of obtaining the second temperature value of the liquid side coil after the operation preset time is continuously executed, or if the second temperature value is smaller than the third preset temperature value, the second energy demand value is reduced by the second preset energy demand value to obtain the third energy demand value, the third energy demand value is used as the second energy demand value, and the step of controlling the fresh air machine based on the second energy demand value and obtaining the second temperature value of the liquid side coil after the operation preset time is continuously executed, so that the liquid side coil temperature sensing package of the fresh air machine coil is controlled according to the energy demand of the target area, the normal operation of the fresh air machine is ensured, and the use comfort level of the indoor user is satisfied.

Based on the second embodiment, a third embodiment of the method for controlling a fresh air machine according to the present invention is provided, in this embodiment, step S309 further includes:

step S311, obtaining a second energy requirement difference value between the first energy requirement value and the second energy requirement value;

step S312, if the second energy demand difference value is greater than the maximum reduction correction value, taking the second energy demand value as the third energy demand value;

in step S313, if the second energy demand difference is smaller than or equal to the maximum reduction correction value, the second energy demand is reduced by a second preset energy demand to obtain a third energy demand.

In this step, understandably, if the liquid side coil Ty detected every operation preset time is continuously in a temperature interval range smaller than a third preset temperature value F, the new fan is continuously corrected to reduce a second preset energy requirement value, i.e., -B, understandably, the new fan is required to be corrected to have a lower limit range, i.e., -H, so as to avoid excessive energy requirement correction, in the process of energy requirement correction, a second energy requirement difference value between the first energy requirement value and the second energy requirement value is required to be obtained in real time, and whether the second energy requirement difference value reaches a maximum reduction correction value H is determined, i.e., if the second temperature value is smaller than the third preset temperature value and the second energy requirement difference value is greater than the maximum reduction correction value, the second energy requirement value is not reduced by the second preset energy requirement value, and the second energy requirement value is taken as the third energy requirement value. And if the second temperature value is less than a third preset temperature value and the second energy demand difference value is less than or equal to the maximum reduction correction value, reducing the second energy demand value by the second preset energy demand value to obtain a third energy demand value.

Further, step S310 further includes:

step S314, if the energy demand value after the second energy demand value is reduced by a second preset energy demand value is greater than or equal to the minimum preset energy demand value, reducing the second energy demand value by the second preset energy demand value to obtain a third energy demand value;

step S315, if the energy demand value after the second energy demand value is decreased by the second preset energy demand value is smaller than the minimum preset energy demand value, taking the second energy demand value as the third energy demand value.

In this step, it can be understood that, during the operation of the reheating system of the new fan, it needs to be corrected to ensure the normal operation of the system, in the process of correcting the new fan reheating system based on the temperature value of the liquid side coil, the minimum value of the energy requirement needs to be specified, which can be 1, namely, in the process that the temperature value of the coil pipe on the liquid side is continuously in the lower interval range shown in figure 3 and the energy requirement of the reheating system of the fresh air fan needs to be reduced, judging whether the energy requirement value reaches the minimum preset energy requirement value of 1, if the energy requirement value after the second energy requirement value is reduced by the second preset energy requirement value is more than or equal to the minimum preset energy requirement value, and if the second energy requirement value is reduced by the second preset energy requirement value and is smaller than the minimum preset energy requirement value, taking the second energy requirement value as the third energy requirement value.

In this embodiment, by obtaining a second energy demand difference between the first energy demand and the second energy demand, if the second energy demand difference is greater than the maximum reduction correction value, the second energy demand is taken as a third energy demand, if the second energy demand difference is less than or equal to the maximum reduction correction value, the second energy demand is reduced by a second preset energy demand to obtain a third energy demand, and if the second energy demand is reduced by the second preset energy demand by an energy demand greater than or equal to the minimum preset energy demand, the second energy demand is reduced by the second preset energy demand to obtain a third energy demand, and if the second energy demand is reduced by the second preset energy demand by an energy demand less than the minimum preset energy demand, the second energy demand is taken as the third energy demand, the situation that the excess energy demand of the reheating system of the fresh air fan coil needs to be corrected is avoided, and the liquid-side temperature sensing bag of the fresh air fan coil needs to be controlled for the target area is performed, the normal operation of the new fan is guaranteed, and the use comfort of indoor users is met.

Based on the first embodiment, a fourth embodiment of the method for controlling a fresh air machine according to the present invention is provided, in this embodiment, step S300 further includes:

step S316, acquiring an initial temperature value of the liquid side coil pipe;

step S317, if the initial temperature value of the liquid side coil is smaller than a third preset temperature value, acquiring a third temperature value of the liquid side coil after the operation of preset time;

step S318, if the third temperature value is smaller than a fourth preset temperature value, reducing the first energy demand by a first preset energy demand to obtain a fourth energy demand, controlling the fresh air machine based on the fourth energy demand, and obtaining a fourth temperature value of the liquid side coil pipe after the operation for a preset time;

step S319, if the fourth temperature value is smaller than a fourth preset temperature value, the fourth energy requirement is used as the first energy requirement, the first energy requirement is reduced by the first preset energy requirement to obtain a fourth energy requirement, the fresh air machine is controlled based on the fourth energy requirement, and a fourth temperature value of the liquid side coil pipe after the operation of the liquid side coil pipe for a preset time is obtained, wherein the third preset temperature value is smaller than the fourth preset temperature value.

In this embodiment, the control rule required by the new fan control method is that the interval from the lower side to the upper side in fig. 3 is determined, and the initial temperature value of the liquid side coil is obtained, as shown in fig. 3, the initial interval of the initial temperature value of the liquid side coil after the reheating device is turned on is the lower side in fig. 3, that is, the initial temperature value Ty of the liquid side coil is smaller than the third preset temperature value F, as in the first embodiment, the third temperature value of the liquid side coil after the preset operation time is obtained, wherein the preset operation time may be 2 minutes, that is, the third temperature value when the operation time passes through the preset operation time of 2 minutes after the initial temperature is determined to be smaller than F is obtained, and the temperature interval where the third temperature value is located in fig. 3 is determined, if the third temperature value is smaller than the fourth preset value, that is, that the detected temperature value of the liquid side coil is smaller than E after the preset operation time of 2 minutes, and reducing the first energy demand by a second preset energy demand to obtain a fourth energy demand, controlling the fresh air machine based on the fourth energy demand, and continuously obtaining a fourth temperature value of which the running time passes through the preset running time after the moment.

And if the fourth temperature value is smaller than a fourth preset temperature value, taking the fourth energy demand as the first energy demand, continuously reducing the first energy demand by the first preset energy demand to obtain a fourth energy demand, controlling the fresh air fan based on the fourth energy demand, and acquiring a fourth temperature value of the liquid side coil pipe after the operation for a preset time, wherein the third preset temperature value is smaller than the fourth preset temperature value.

It can be understood that, if the initial interval of the initial temperature value Ty of the liquid side coil after the reheating device is turned on is within the interval range where Ty in fig. 3 is greater than or equal to F being less than E, and the first temperature value of the liquid side coil after the operation for the preset time is still within the interval range where Ty is greater than or equal to F being less than E, then if the correction rule of the fresh air fan control method is determined from the lower side to the upper side in fig. 3, the first energy demand is reduced by the second preset energy demand to obtain the second energy demand, and the fresh air fan is controlled based on the second energy demand. If the correction rule of the fresh air fan control method is judged from the upper side to the lower side in fig. 3, the first energy demand is not subjected to addition and subtraction correction, and the fresh air fan is controlled based on the first energy demand.

In this embodiment, after the reheating device through if new fan reheating system launches, if the downside interval of liquid side coil pipe temperature initial interval in fig. 3, need to revise according to predetermineeing the rule that needs to revise that upwards judges from down, need to control to the ability of target area liquid side coil pipe temperature bulb of new fan coil pipe, guarantee new fan's normal operating, satisfy indoor user's comfort in use.

Based on the fourth embodiment, a fifth embodiment of the method for controlling a fresh air machine according to the present invention is provided, in this embodiment, step S318 further includes:

step S321, obtaining a third energy demand difference value between the first energy demand value and the fourth energy demand value;

step S322, if the third energy demand difference value is larger than the maximum reduction correction value, controlling the fresh air machine based on the first energy demand value;

step S323, if the third energy demand difference is less than or equal to the maximum reduction correction value, controlling the fresh air machine based on the fourth energy demand value.

In this embodiment, as in the above step, if the liquid side coil temperature value detected every other preset operation time is continuously within the temperature range smaller than E, the energy of the new fan reheating system needs to be reduced by the second preset energy requirement value for correction, and it can be understood that the new fan can have a lower limit range, i.e., -H, to avoid excessive energy requirement value for correction, during the energy requirement value for correction, a third energy requirement value between the first energy requirement value and the fourth energy requirement value needs to be obtained in real time, if the third energy requirement value is greater than the maximum reduction correction value, the new fan is controlled based on the first energy requirement value, and if the third energy requirement value is less than or equal to the maximum reduction correction value, the new fan is controlled based on the fourth energy requirement value.

Further, step S318 further includes:

step S324, if the fourth energy demand is larger than the minimum energy demand, controlling the fresh air machine based on the first energy demand;

step S325, if the fourth energy requirement is less than or equal to the minimum energy requirement, controlling the fresh air machine based on the fourth energy requirement.

In this step, understandably, in the process of operating the reheating system of the new fan, the requirement for correction needs to be performed to ensure the normal operation of the system, then in the process of performing the requirement for correction based on the temperature value of the liquid side coil, a minimum requirement value is specified, which can be 1, that is, in the process of performing downward correction on the new fan, that is, in the process of reducing the requirement value, whether the fourth requirement value reaches the minimum requirement value of 1 is judged, if the fourth requirement value is greater than the minimum requirement value of 1, the new fan is controlled based on the first requirement value, and if the fourth requirement value is less than or equal to the minimum requirement value, the new fan is controlled based on the fourth requirement value.

In this embodiment, by obtaining a third energy demand difference value between the first energy demand value and the fourth energy demand value, if the third energy demand difference value is greater than the maximum reduction correction value, the fresh air machine is controlled based on the first energy demand value, if the third energy demand difference value is less than or equal to the maximum reduction correction value, the fresh air machine is controlled based on the fourth energy demand value, and if the fourth energy demand value is greater than the minimum energy demand value, the fresh air machine is controlled based on the first energy demand value, and if the fourth energy demand value is less than or equal to the minimum energy demand value, the fresh air machine is controlled based on the fourth energy demand value, so that the situation that the excess energy of a reheating system of the fresh air machine needs to be corrected is avoided, and the liquid side coil temperature sensing package of the fresh air machine coil needs to be controlled according to the energy demand of a target area is performed, the normal operation of the fresh air machine is ensured, and the use comfort level.

Based on the fourth embodiment, a sixth embodiment of the method for controlling a fresh air machine according to the present invention is provided, in this embodiment, after step S319, the method further includes:

step S326, if the fourth temperature value is less than a first preset temperature value and the fourth temperature value is greater than or equal to a fourth preset temperature value, controlling the fresh air machine based on the fourth energy demand value, and continuing to perform the step of obtaining the fourth temperature value of the liquid side coil after the operation for a preset time.

In this embodiment, if the fourth temperature value is less than the first preset temperature value and greater than or equal to a fourth preset temperature value, where the fourth preset temperature value may be denoted as E, and F is less than E, optionally, the third preset temperature value F may be 1 ℃, the fourth required value is not modified, that is, the new air blower is controlled based on the fourth required value, specifically, when it is detected that the liquid side pan temperature value is continuously less than the first preset temperature value at every preset operation time, and is greater than or equal to the fourth preset temperature value, the fourth required value is not modified by addition or subtraction, and the new air blower is controlled based on the fourth required value, in this interval range, the liquid side coil temperature value may be changed by floating up and down, if the liquid side coil temperature value is greater than or equal to D after the preset operation time, the above step S318 is continuously performed, which is not described herein again.

Further, step S319 further includes:

step S327, if the fourth temperature value is greater than or equal to a first preset temperature value, increasing the fourth energy requirement by a first preset energy requirement to obtain a fifth energy requirement;

step S328, taking the fifth energy requirement as the fourth energy requirement, and continuing to execute the step of controlling the fresh air machine based on the fourth energy requirement and obtaining a fourth temperature value of the liquid-side coil pipe after the operation is performed for a preset time.

In this step, if the fourth temperature value is greater than or equal to the first preset temperature value, the fourth energy requirement is increased by the first preset energy requirement to obtain a fifth energy requirement, the fifth energy requirement is used as the fourth energy requirement, the new air blower is continuously controlled based on the fourth energy requirement, and the fourth temperature value of the liquid side coil pipe after the operation of the new air blower is obtained within the preset time.

If the fourth temperature value is still greater than or equal to the first preset temperature value after the step of continuously controlling the fresh air machine based on the fourth energy requirement and acquiring the fourth temperature value of the liquid side coil pipe after the operation preset time is executed, the step of continuously taking the fifth energy requirement as the fourth energy requirement, and continuously executing the step of controlling the fresh air machine based on the fourth energy requirement and acquiring the fourth temperature value of the liquid side coil pipe after the operation preset time.

In this embodiment, if the fourth temperature value is less than the first preset temperature value and the fourth temperature value is greater than or equal to the fourth preset temperature value, the new air blower is controlled based on the fourth energy requirement and the step of obtaining the fourth temperature value of the liquid side coil after the operation preset time is continuously executed, or if the fourth temperature value is greater than or equal to the first preset temperature value, the step of increasing the fourth energy requirement by the first preset energy requirement to obtain a fifth energy requirement, the fifth energy requirement is used as the fourth energy requirement, the new air blower is controlled based on the fourth energy requirement and the step of obtaining the fourth temperature value of the liquid side coil after the operation preset time is continuously executed, the energy requirement control of the liquid side coil temperature sensing package of the new air blower coil in the target area is performed, the situation that the standby air supply of the new air blower is preferentially defrosted due to the low temperature of the liquid side coil of the new air blower is avoided, and the normal operation of the new air blower is further ensured, the use comfort of indoor users is met.

Based on the sixth embodiment, a seventh embodiment of the method for controlling a fresh air machine according to the present invention is provided, in this embodiment, step S327 further includes:

step S329, acquiring a fourth energy requirement difference value between the fourth energy requirement value and the first energy requirement value;

step S330, if the fourth energy demand difference value is larger than the maximum increase correction value, taking the fourth energy demand value as the fifth energy demand value;

in step S331, if the fourth energy demand difference is smaller than or equal to the maximum increase correction value, the fourth energy demand is increased by the first preset energy demand to obtain a fifth energy demand.

In this embodiment, it is understood that, if the temperature value of the liquid side coil detected every preset operation time is continuously within the temperature range greater than or equal to C, the first preset energy requirement value is continuously increased to correct the temperature value of the liquid side coil, and it is understood that the fresh air machine can have an upper limit range, i.e., + G, to avoid excessive energy requirement correction, and during the energy requirement correction process, it is determined whether the current accumulated value of the energy requirement correction reaches the maximum value of the energy requirement correction G, i.e., it is determined whether the corrected accumulated value of the first energy requirement reaches the maximum value of the corrected increase, a fourth energy requirement difference between the fourth energy requirement value and the first energy requirement value is obtained every time the correction is required, and if the temperature value of the liquid side coil detected every preset operation time is greater than or equal to C, the fourth energy requirement difference is greater than the maximum value of the increased correction G, and taking the fourth energy requirement value as a fifth energy requirement value, and if the fourth energy requirement difference value is less than or equal to the maximum increase correction value G, increasing the fourth energy requirement value by the first preset energy requirement value to obtain the fifth energy requirement value.

In this embodiment, a fourth energy requirement difference value between the fourth energy requirement value and the first energy requirement value is obtained, if the fourth energy requirement difference value is greater than the maximum increase correction value, the fourth energy requirement value is used as the fifth energy requirement value, and if the fourth energy requirement difference value is less than or equal to the maximum increase correction value, the fourth energy requirement value is increased by the first preset energy requirement value to obtain the fifth energy requirement value, so that the situation that the excessive energy of a reheating system of the new fan needs to be corrected is avoided, and the energy requirement of a liquid side coil temperature sensing package of the new fan coil in a target area is controlled, so that the normal operation of the new fan is ensured, and the use comfort level of an indoor user is met.

Based on the above embodiment, an eighth embodiment of the method for controlling a fresh air machine according to the present invention is provided, in this embodiment, after step S300, the method further includes:

and S332, if the fact that the air supply temperature of the fresh air fan reaches the preset temperature is detected, disconnecting the reheating device, determining an energy demand correction value of the fresh air fan based on the air supply temperature of the fresh air fan and the first energy demand value, and controlling the fresh air fan based on the energy demand value.

In this embodiment, it can be understood that if it is detected that the air supply temperature of the fresh air machine is in the preset temperature range, the air supply of the fresh air machine does not need to be heated, the energy requirement of the fresh air machine on the basis of the temperature of the liquid side coil is stopped, the energy requirement of the fresh air machine on the basis of the temperature of the liquid side coil is cleared, that is, the energy requirement of the fresh air machine on the basis of the temperature of the liquid side coil is restored to the first energy requirement value, then the reheating device is disconnected, the energy requirement value of the fresh air machine is determined on the basis of the air supply temperature of the fresh air machine and the first energy requirement value, and the fresh air machine is controlled on the.

In this embodiment, through if detect fresh air machine's supply air temperature and reach preset temperature, then disconnection reheating device to based on fresh air machine's supply air temperature and first ability need value, confirm fresh air machine's ability need value, based on ability need value control fresh air machine guarantees fresh air machine's normal operating, satisfies indoor user's comfort in use.

In addition, an embodiment of the present invention further provides a computer-readable storage medium, where a new fan control program is stored on the computer-readable storage medium, and when being executed by a processor, the new fan control program implements the steps of the new fan control method.

The method implemented when the new fan control program running on the processor is executed may refer to each embodiment of the new fan control method of the present invention, and details are not described here.

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

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

controlling the reheating device to start operation;

2. The method of claim 1, wherein the steps of obtaining a temperature value of a liquid side coil of the fresh air machine at predetermined time intervals, determining an energy demand of the fresh air machine based on the temperature value of the liquid side coil and the first energy demand, and controlling the fresh air machine based on the energy demand comprise:

acquiring an initial temperature value of the liquid side coil pipe;

3. The fresh air machine control method of claim 2, wherein said step of controlling said fresh air machine based on said second energy demand comprises:

4. The method of controlling the fresh air machine as claimed in claim 2, wherein the step of obtaining the second temperature value of the liquid side coil after the preset operation time further comprises:

5. The method of controlling the fresh air machine as claimed in claim 2, wherein the step of obtaining the second temperature value of the liquid side coil after the preset operation time further comprises:

6. The fresh air machine control method of claim 5 wherein said step of reducing said second energy requirement by a second predetermined energy requirement to obtain a third energy requirement comprises:

7. The fresh air machine control method of claim 5 wherein said step of reducing said second energy requirement by a second predetermined energy requirement to obtain a third energy requirement further comprises:

8. The method of claim 1, wherein the steps of obtaining a temperature value of a liquid side coil of the fresh air machine at predetermined time intervals, determining an energy demand of the fresh air machine based on the temperature value of the liquid side coil and the first energy demand, and controlling the fresh air machine based on the energy demand further comprise:

acquiring an initial temperature value of the liquid side coil pipe;

9. The fresh air machine control method of claim 8, wherein said step of controlling said fresh air machine based on said fourth energy demand comprises:

acquiring a third energy demand difference value of the first energy demand value and the fourth energy demand value;

10. The fresh air machine control method of claim 8, wherein said step of controlling said fresh air machine based on said fourth energy demand further comprises:

11. The method of controlling the fresh air machine as claimed in claim 8, wherein the step of obtaining the fourth temperature value of the hydraulic side coil after the preset operation time further comprises:

12. The method of controlling the fresh air machine as claimed in claim 8, wherein the step of obtaining the fourth temperature value of the hydraulic side coil after the preset operation time further comprises:

13. The fresh air machine control method of claim 12 wherein said step of increasing said fourth energy requirement by a first predetermined energy requirement to obtain a fifth energy requirement comprises:

14. The method according to any one of claims 1 to 13, wherein the step of acquiring a temperature value of a liquid side coil of the fresh air machine at every preset time, the step of determining an energy demand of the fresh air machine based on the temperature value of the liquid side coil and the first energy demand, and the step of controlling the fresh air machine based on the energy demand further comprises:

15. The utility model provides a new fan, its characterized in that, new fan includes: a memory, a processor and a new fan control program stored on the memory and executable on the processor, the new fan control program when executed by the processor implementing the steps of the new fan control method according to any one of claims 1 to 14.

16. A computer-readable storage medium, having stored thereon a new fan control program, which when executed by a processor, performs the steps of a new fan control method according to any one of claims 1 to 14.