CN109798628B - Method and device for controlling pressure difference of refrigerant flow dividing device - Google Patents
Method and device for controlling pressure difference of refrigerant flow dividing device Download PDFInfo
- Publication number
- CN109798628B CN109798628B CN201910071240.3A CN201910071240A CN109798628B CN 109798628 B CN109798628 B CN 109798628B CN 201910071240 A CN201910071240 A CN 201910071240A CN 109798628 B CN109798628 B CN 109798628B
- Authority
- CN
- China
- Prior art keywords
- temperature
- internal machine
- working mode
- preset temperature
- machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention provides a method and a device for controlling pressure difference of a refrigerant flow dividing device, wherein the method comprises the following steps: acquiring a current working mode of an internal machine; acquiring a working mode switching signal of an internal machine; and controlling the pressure difference of the refrigerant shunting device according to the current working mode of the internal machine and the working mode switching signal of the internal machine. Therefore, according to the current working mode of the inner machine and the working mode switching signal of the inner machine, when the working mode of the inner machine is switched, the pressure equalization of the inner machine side is realized, so that the pressure difference between two sides of the corresponding on-off valve in the refrigerant shunting device is reduced, and therefore, in the working mode switching process of the inner machine, the noise generated when the refrigerant shunting device switches the on-off valve is reduced or avoided.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method for controlling the pressure difference of a refrigerant flow dividing device and a device for controlling the pressure difference of the refrigerant flow dividing device.
Background
At present, a heat recovery multi-split air conditioner system generally comprises a refrigerant shunting device, and a part of indoor units can operate in a cooling mode and a heating mode at the same time.
When the indoor unit of the related art performs the switching of the cooling and heating modes, the flow direction of the refrigerant is usually changed by switching the on-off valve of the refrigerant flow dividing device, so that the switching of the cooling and heating modes is realized.
However, the related technical problem lies in that when the on-off valve of the refrigerant distribution device is directly switched, or the pressure is relieved by the pressure equalizing valve (pressure relief valve) first, and then the on-off valve is switched, due to the large pressure difference at the two ends of the on-off valve of the refrigerant distribution device, when the refrigeration and heating modes are switched, a great noise is generated, and the use experience of a user is influenced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first object of the present invention is to provide a method for controlling a pressure difference of a refrigerant flow dividing device, which can realize pressure equalization on an inner machine side when an operation mode of an inner machine is switched to reduce the pressure difference of the refrigerant flow dividing device, thereby reducing or avoiding noise generated when the refrigerant flow dividing device switches an on-off valve during the operation mode switching process of the inner machine.
The second objective of the present invention is to provide a pressure difference control device for a refrigerant flow dividing device.
In order to achieve the above object, a first embodiment of the present invention provides a method for controlling a pressure difference of a refrigerant flow dividing device, where the refrigerant flow dividing device includes a plurality of sets of on-off valves, each set of on-off valves includes a first on-off valve and a second on-off valve, each set of on-off valves corresponds to an internal machine, and each set of on-off valves are independent of each other, and the method includes: acquiring a current working mode of an internal machine; acquiring a working mode switching signal of the internal machine; and controlling the pressure difference of the refrigerant shunting device according to the current working mode of the internal machine and the working mode switching signal of the internal machine.
According to the method for controlling the pressure difference of the refrigerant shunting device, the current working mode of the inner machine is obtained, the working mode switching signal of the inner machine is obtained, and the pressure difference of the refrigerant shunting device is controlled according to the current working mode of the inner machine and the working mode switching signal of the inner machine. Therefore, according to the current working mode of the inner machine and the working mode switching signal of the inner machine, when the working mode of the inner machine is switched, the pressure equalization of the inner machine side is realized, so that the pressure difference between two sides of the corresponding on-off valve in the refrigerant shunting device is reduced, and therefore, in the working mode switching process of the inner machine, the noise generated when the refrigerant shunting device switches the on-off valve is reduced or avoided.
In addition, the method for controlling the pressure difference of the refrigerant flow dividing device according to the above embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the present invention, the current operation mode of the indoor unit includes a heating mode and a cooling mode.
According to an embodiment of the present invention, the controlling a pressure difference of the refrigerant flow dividing device according to the current working mode of the internal machine and the working mode switching signal of the internal machine includes: judging whether the current working mode of the internal machine is a heating mode or not; if the current working mode of the indoor unit is a heating mode, judging whether a working mode switching signal of the indoor unit is that the heating mode of the indoor unit is switched to a cooling mode; if the working mode switching signal of the internal machine is that the internal machine is switched from a heating mode to a cooling mode, closing the first on-off valve and the second on-off valve corresponding to the internal machine in the refrigerant shunting device; and controlling a throttling part of the inner machine to open a first preset opening degree, and opening a fan of the inner machine.
According to an embodiment of the present invention, after the controlling the throttle part of the internal machine to open by a first preset opening degree and the fan of the internal machine to open, the method further includes: acquiring the temperature of an internal machine side heat exchanger and the temperature of an indoor environment; generating a first preset temperature and a second preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, wherein the first preset temperature is higher than the indoor environment temperature, and the second preset temperature is lower than the indoor environment temperature; judging whether the temperature of the heat exchanger on the inner machine side is less than or equal to a first preset temperature and is greater than or equal to a second preset temperature; and if the temperature of the heat exchanger on the side of the internal machine is less than or equal to a first preset temperature and greater than or equal to a second preset temperature, starting the first on-off valve corresponding to the internal machine in the refrigerant flow dividing device.
According to an embodiment of the present invention, the controlling a pressure difference of the refrigerant flow dividing device according to a current working mode of the internal machine and a working mode switching signal of the internal machine further includes: judging whether the current working mode of the internal machine is a refrigeration mode or not; if the current working mode of the internal machine is a refrigeration mode, judging whether a working mode switching signal of the internal machine is that the internal machine is switched from the refrigeration mode to a heating mode; if the working mode switching signal of the internal machine is that the internal machine is switched from a refrigeration mode to a heating mode, closing the first on-off valve and the second on-off valve corresponding to the internal machine in the refrigerant shunting device; and controlling the opening degree of a throttling part of the inner machine to be a first preset opening degree, and turning on a fan of the inner machine.
According to an embodiment of the present invention, after the controlling the throttle part of the internal machine to open a second preset opening degree and the fan of the internal machine to open, the method further includes: acquiring the temperature of an internal machine side heat exchanger and the temperature of an indoor environment; generating a third preset temperature and a fourth preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, wherein the third preset temperature is higher than the indoor environment temperature, and the fourth preset temperature is lower than the indoor environment temperature; judging whether the temperature of the heat exchanger on the inner machine side is less than or equal to a third preset temperature and is greater than or equal to a fourth preset temperature; and if the temperature of the indoor machine side heat exchanger is less than or equal to a third preset temperature and is greater than or equal to a fourth preset temperature, opening the second on-off valve.
In order to achieve the above object, a second aspect of the present invention provides a pressure difference control device for a refrigerant flow dividing device, where the refrigerant flow dividing device includes a plurality of sets of on-off valves, each set of on-off valves includes a first on-off valve and a second on-off valve, each set of on-off valves corresponds to an internal machine, and each set of on-off valves are independent from each other, and the device includes: the acquisition module is used for acquiring the current working mode of the internal machine and acquiring a working mode switching signal of the internal machine; and the control module is used for controlling the pressure difference of the refrigerant shunting device according to the current working mode of the internal machine and the working mode switching signal of the internal machine.
According to the control device for the pressure difference of the refrigerant shunting device, the current working mode of the inner machine is obtained through the obtaining module, the working mode switching signal of the inner machine is obtained, and then the pressure difference of the refrigerant shunting device is controlled through the control module according to the current working mode of the inner machine and the working mode switching signal of the inner machine. Therefore, according to the current working mode of the inner machine and the working mode switching signal of the inner machine, when the working mode of the inner machine is switched, the pressure equalization of the inner machine side is realized, so that the pressure difference between two sides of the corresponding on-off valve in the refrigerant shunting device is reduced, and therefore, in the working mode switching process of the inner machine, the noise generated when the refrigerant shunting device switches the on-off valve is reduced or avoided.
In addition, the control device for the pressure difference of the refrigerant distribution device according to the above embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the present invention, the current operation mode of the indoor unit includes a heating mode and a cooling mode.
According to an embodiment of the present invention, the control apparatus further includes: a judgment module; the judging module is used for judging whether the current working mode of the internal machine is a heating mode or not, and judging whether a working mode switching signal of the internal machine is that the heating mode of the internal machine is switched to a cooling mode when the current working mode of the internal machine is the heating mode; the control module is further configured to close the first on-off valve and the second on-off valve, corresponding to the internal machine, in the refrigerant distribution device when a working mode switching signal of the internal machine indicates that the internal machine is switched from a heating mode to a cooling mode; and controlling a throttling component of the inner machine to open a first preset opening degree, and opening a fan of the inner machine.
According to an embodiment of the present invention, the control apparatus further includes: a generation module; the acquisition module is also used for acquiring the temperature of the indoor unit side heat exchanger and the indoor environment temperature; the generating module is used for generating a first preset temperature and a second preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, wherein the first preset temperature is higher than the indoor environment temperature, and the second preset temperature is lower than the indoor environment temperature; the judging module is further configured to: judging whether the temperature of the heat exchanger on the inner machine side is less than or equal to a first preset temperature and is greater than or equal to a second preset temperature; the control module is further configured to: and when the temperature of the heat exchanger on the inner machine side is less than or equal to a first preset temperature and is greater than or equal to a second preset temperature, opening the first on-off valve corresponding to the inner machine in the refrigerant flow dividing device.
According to an embodiment of the present invention, the determining module is further configured to determine whether a current working mode of the internal machine is a cooling mode, and when the current working mode of the internal machine is the cooling mode, determine whether a working mode switching signal of the internal machine is that the internal machine is switched from the cooling mode to the heating mode; the control module is further used for closing the first on-off valve and the second on-off valve corresponding to the internal machine in the refrigerant flow dividing device when the working mode switching signal of the internal machine is that the internal machine is switched from the refrigeration mode to the heating mode; and controlling the opening degree of a throttling part of the inner machine to be a second preset opening degree, and turning on a fan of the inner machine.
According to an embodiment of the present invention, the obtaining module is further configured to: acquiring the temperature of an internal machine side heat exchanger and the temperature of an indoor environment; the generating module is further configured to generate a third preset temperature and a fourth preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, where the third preset temperature is greater than the indoor environment temperature, and the fourth preset temperature is less than the indoor environment temperature; the judging module is also used for judging whether the temperature of the heat exchanger on the inner machine side is less than or equal to a third preset temperature and is greater than or equal to a fourth preset temperature; the control module is further used for opening a second on-off valve corresponding to the indoor unit in the refrigerant distribution device when the temperature of the heat exchanger on the side of the indoor unit is less than or equal to a third preset temperature and is greater than or equal to a fourth preset temperature.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic configuration diagram of a multi-split system according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a method for controlling a pressure difference of a refrigerant flow dividing device according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a method for controlling a pressure difference of a refrigerant flow dividing device according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a method for controlling a pressure difference of a refrigerant flow dividing device according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a method for controlling a pressure difference of a refrigerant flow dividing device according to another embodiment of the present invention;
fig. 6 is a flowchart illustrating a method for controlling a pressure difference of a refrigerant flow dividing device according to another embodiment of the present invention;
fig. 7 is a block diagram illustrating a pressure difference control apparatus of a refrigerant distribution device according to an embodiment of the present invention;
fig. 8 is a block diagram illustrating a pressure difference control device of a refrigerant distribution device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes a method and an apparatus for controlling a pressure difference of a refrigerant flow dividing apparatus according to an embodiment of the present invention with reference to the drawings.
Fig. 1 is a schematic configuration diagram of a multi-split system according to an embodiment of the present invention.
As shown in fig. 1, the multi-split system according to an embodiment of the present invention may include a compressor INV, a low pressure reservoir ACC, an oil separator O/S, a mode switching device ST, a FAN, a throttle device EXV, a high pressure sensor PH, a low pressure sensor PL, and a heat exchanger HE.
Specifically, as shown in fig. 1, in some embodiments of the present invention, the refrigerant flow dividing device S may include a low pressure gas pipe, a high pressure gas pipe, a liquid pipe connected to the outer unit, and a gas pipe and a liquid pipe connected to the inner unit, and a plurality of sets of on-off valves, each set of on-off valves including a first on-off valve SVA and a second on-off valve SVB, wherein each set of on-off valves corresponds to one inner unit, each set of on-off valves is independent from each other, one side of the first on-off valve SVA is connected to the gas pipe of the inner unit, the other side of the first on-off valve SVA is connected to the low pressure gas pipe of the outer unit, one side of the second on-off valve SVB is connected to the gas pipe of the inner unit, and the other side of the.
Fig. 2 is a flow chart illustrating a method for controlling a pressure difference of a refrigerant flow dividing device according to an embodiment of the present invention.
As shown in fig. 2, the method for controlling the pressure difference of the refrigerant flow dividing device includes:
and S101, acquiring the current working mode of the internal machine.
Specifically, according to an embodiment of the present invention, the current operation mode of the indoor unit may include a heating mode and a cooling mode.
And S102, acquiring a working mode switching signal of the internal machine.
It can be understood that, when the user sets the current working mode of the internal unit through the mobile terminal or the remote controller, the mobile terminal or the remote controller sends a working mode switching signal to the internal unit.
And S103, controlling the pressure difference of the refrigerant shunting device according to the current working mode of the internal machine and the working mode switching signal of the internal machine.
Therefore, when the inner machine working mode is switched, the pressure difference of the refrigerant flow dividing device is reduced, and therefore noise generated when the refrigerant flow dividing device switches the on-off valve is reduced or avoided.
Further, according to an embodiment of the present invention, as shown in fig. 3, controlling a pressure difference of the refrigerant flow dividing device according to a current operating mode of the internal machine and an operating mode switching signal of the internal machine includes:
s201, judging whether the current working mode of the internal machine is a heating mode.
And S202, if the current working mode of the internal machine is the heating mode, judging whether the working mode switching signal of the internal machine is that the internal machine is switched from the heating mode to the cooling mode.
And S203, if the working mode switching signal of the internal machine is that the heating mode of the internal machine is switched to the cooling mode, closing a first on-off valve and a second on-off valve which correspond to the internal machine in the refrigerant shunting device.
That is, when the current operating mode of the internal machine is the heating mode and the operating mode switching signal of the internal machine is that the heating mode is switched to the cooling mode, the refrigerant flow dividing device is closed, that is, the first on-off valve SVA and the second on-off valve SVB corresponding to the internal machine in the refrigerant flow dividing device are closed.
It should be understood that, when the current operating mode of the internal machine is the heating mode and the operating mode switching signal of the internal machine is not obtained, the first on-off valve SVA corresponding to the internal machine in the refrigerant distribution device is in the closed state, and the second on-off valve SVB is in the open state.
And S204, controlling a throttling component of the inner machine to open a first preset opening degree, and opening a fan of the inner machine.
That is to say, when the current working mode of the internal machine is the heating mode and the working mode switching signal of the internal machine is that the heating mode is switched to the cooling mode, the throttling component EXV of the internal machine is also controlled to open the first preset opening degree, and the FAN of the internal machine is turned on to control the pressure difference of the refrigerant shunting device.
It can be understood that, in the above embodiment of the present invention, the first on-off valve SVA and the second on-off valve SVB are closed to make the refrigerant inside the inner machine be in a relatively closed region, and the throttling component EXV of the inner machine is controlled to open a first preset opening degree, and the FAN of the inner machine is turned on to implement pressure equalization on the relatively closed region inside the inner machine, so as to control the pressure difference of the refrigerant flow dividing device.
Further, according to an embodiment of the present invention, as shown in fig. 3, after controlling the throttle part of the internal machine to open by a first preset opening degree and turning on the fan of the internal machine, the method further includes:
and S205, acquiring the temperature of the indoor unit side heat exchanger and the indoor environment temperature.
Specifically, the temperature sensor may be provided on the inner machine side heat exchanger to obtain the temperature of the inner machine side heat exchanger, and the temperature sensor may be provided on the inner machine side to obtain the indoor ambient temperature.
And S206, generating a first preset temperature and a second preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, wherein the first preset temperature is greater than the indoor environment temperature, and the second preset temperature is less than the indoor environment temperature.
For example, when the indoor environment temperature is T1, a first preset temperature T1+ α 1 and a second preset temperature T1- α 2 corresponding to the indoor environment temperature are generated, wherein T1- α 2 < T1 < T1+ α 1; when the indoor environment temperature is T2, a first preset temperature T2+ alpha 1 and a second preset temperature T2-alpha 2 corresponding to the indoor environment temperature are generated, wherein T2-alpha 2 is more than T2 and less than T2+ alpha 1, and the like.
And S207, judging whether the temperature of the indoor unit side heat exchanger is less than or equal to a first preset temperature and is greater than or equal to a second preset temperature.
And S208, if the temperature of the heat exchanger on the side of the internal machine is less than or equal to a first preset temperature and greater than or equal to a second preset temperature, starting a first on-off valve corresponding to the internal machine in the refrigerant flow dividing device.
That is to say, when the temperature of the heat exchanger on the side of the internal machine is less than or equal to the first preset temperature and greater than or equal to the second preset temperature, the first on-off valve SVA corresponding to the internal machine in the refrigerant flow dividing device is opened, so that the internal machine is controlled to realize mode switching.
It should be noted that, in some embodiments of the present invention, when the temperature of the indoor unit-side heat exchanger is greater than the first preset temperature and the first preset time elapses, the first on-off valve SVA corresponding to the indoor unit in the refrigerant distribution device is opened, or when the temperature of the indoor unit-side heat exchanger is less than the second preset temperature and the first preset time elapses, the first on-off valve SVA corresponding to the indoor unit in the refrigerant distribution device is opened, so as to avoid the failure of the temperature sensor, which may cause the failure of the mode switching of the indoor unit.
For example, in one embodiment of the present invention, as shown in fig. 4, after the air conditioner is powered on, step S10 is executed.
S10, acquiring a working mode switching signal of the internal machine;
and S11, judging whether the working mode switching signal of the internal machine is that the internal machine is switched from the heating mode to the cooling mode. If so, go to step S12; if not, step S18 is performed.
And S12, closing a first on-off valve and a second on-off valve corresponding to the indoor unit in the refrigerant flow dividing device.
And S13, controlling a throttling component of the inner machine to open a first preset opening degree, and opening a fan of the inner machine.
And S14, acquiring the temperature of the indoor unit side heat exchanger and the indoor environment temperature, and generating a first preset temperature and a second preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, wherein the first preset temperature is greater than the indoor environment temperature, and the second preset temperature is less than the indoor environment temperature.
And S15, judging whether the temperature of the internal machine side heat exchanger is less than or equal to a first preset temperature and is greater than or equal to a second preset temperature. If so, go to step S16; if not, step S15 is performed.
S16, it is determined whether the first preset time has elapsed. If so, go to step S17; if not, step S15 is performed.
And S17, opening a first on-off valve corresponding to the indoor unit in the refrigerant flow dividing device.
And S18, controlling the switching of the working modes of the internal machine.
Further, according to an embodiment of the present invention, as shown in fig. 5, the controlling a pressure difference of the refrigerant flow dividing device according to a current operating mode of the internal machine and an operating mode switching signal of the internal machine further includes:
and S301, judging whether the current working mode of the internal machine is a refrigeration mode.
And S302, if the current working mode of the internal machine is the cooling mode, judging whether the working mode switching signal of the internal machine is that the internal machine is switched from the cooling mode to the heating mode.
And S303, if the working mode switching signal of the internal machine is that the internal machine is switched from the refrigeration mode to the heating mode, closing a first on-off valve and a second on-off valve which correspond to the internal machine in the refrigerant flow dividing device.
That is, when the current operating mode of the internal machine is the cooling mode and the operating mode switching signal of the internal machine is that the cooling mode is switched to the heating mode, the refrigerant flow dividing device is closed, that is, the first on-off valve SVA and the second on-off valve SVB corresponding to the internal machine in the refrigerant flow dividing device are closed.
It should be understood that, when the current operating mode of the internal machine is the cooling mode and the operating mode switching signal of the internal machine is not obtained, the first on-off valve SVA corresponding to the internal machine in the refrigerant distribution device is in the open state, and the second on-off valve SVB is in the closed state.
And S304, controlling the opening degree of a throttling part of the inner machine to be a second preset opening degree, and turning on a fan of the inner machine.
That is to say, when the current working mode of the internal machine is the cooling mode and the working mode switching signal of the internal machine is that the cooling mode is switched to the heating mode, the throttling component EXV of the internal machine is also controlled to open the second preset opening degree, and the FAN of the internal machine is also controlled to open, so as to control the pressure difference of the refrigerant shunting device.
It can be understood that, in the above embodiment of the present invention, the first on-off valve SVA and the second on-off valve SVB are closed to make the refrigerant inside the inner machine be in a relatively closed region, and the throttling component EXV of the inner machine is controlled to open the second preset opening degree, and the FAN of the inner machine is turned on to implement pressure equalization on the relatively closed region inside the inner machine, that is, to control the pressure difference of the refrigerant flow dividing device.
Further, according to an embodiment of the present invention, as shown in fig. 5, after controlling the throttle part of the internal machine to open the second preset opening degree and turning on the fan of the internal machine, the method further includes:
s305, obtaining the temperature of the indoor unit side heat exchanger and the indoor environment temperature.
Specifically, the temperature sensor may be provided on the inner machine side heat exchanger to obtain the temperature of the inner machine side heat exchanger, and the temperature sensor may be provided on the inner machine side to obtain the indoor ambient temperature.
And S306, generating a third preset temperature and a fourth preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, wherein the third preset temperature is higher than the indoor environment temperature, and the fourth preset temperature is lower than the indoor environment temperature.
For example, when the indoor environment temperature is T1, a third preset temperature T1+ β 1 and a fourth preset temperature T1- β 2 corresponding to the indoor environment temperature are generated, wherein T1- β 2 < T1 < T1+ β 1; when the indoor environment temperature is T2, a third preset temperature T2+ beta 1 and a fourth preset temperature T2-beta 2 corresponding to the indoor environment temperature are generated, wherein T2-beta 2 is more than T2 and less than T2+ beta 1, and the like.
And S307, judging whether the temperature of the indoor unit side heat exchanger is less than or equal to a third preset temperature and greater than or equal to a fourth preset temperature.
And S308, if the temperature of the heat exchanger on the side of the internal machine is less than or equal to the third preset temperature and greater than or equal to the fourth preset temperature, a second on-off valve corresponding to the internal machine in the refrigerant flow dividing device is opened.
That is to say, when the temperature of the heat exchanger on the side of the internal machine is less than or equal to the third preset temperature and greater than or equal to the fourth preset temperature, the second shutoff valve SVB corresponding to the internal machine in the refrigerant flow dividing device is opened, so that the internal machine is controlled to realize mode switching.
It should be noted that, in some embodiments of the present invention, when the temperature of the indoor unit-side heat exchanger is higher than the third preset temperature and the first preset time elapses, the second turn-off valve SVB corresponding to the indoor unit in the refrigerant flow dividing device is turned on, or when the temperature of the indoor unit-side heat exchanger is lower than the fourth preset temperature and the first preset time elapses, the second turn-off valve SVB corresponding to the indoor unit in the refrigerant flow dividing device is turned on, so as to avoid the failure of the temperature sensor, which may cause the failure of the mode switching of the indoor unit.
For example, in one embodiment of the present invention, as shown in fig. 6, after the air conditioner is powered on, step S20 is executed.
S20, acquiring a working mode switching signal of the internal machine;
and S21, judging whether the working mode switching signal of the internal machine is that the internal machine is switched from the cooling mode to the heating mode. If so, go to step S22; if not, step S28 is performed.
And S22, closing a first on-off valve and a second on-off valve corresponding to the indoor unit in the refrigerant flow dividing device.
And S23, controlling a throttling component of the inner machine to open a second preset opening degree, and opening a fan of the inner machine.
And S24, acquiring the temperature of the indoor unit side heat exchanger and the indoor environment temperature, and generating a third preset temperature and a fourth preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, wherein the third preset temperature is higher than the indoor environment temperature, and the fourth preset temperature is lower than the indoor environment temperature.
And S25, judging whether the temperature of the internal machine side heat exchanger is less than or equal to a third preset temperature and is greater than or equal to a fourth preset temperature. If so, go to step S27; if not, step S26 is performed.
S26, it is determined whether the first preset time has elapsed. If so, go to step S27; if not, step S25 is performed.
And S27, opening a second on-off valve corresponding to the indoor unit in the refrigerant flow dividing device.
And S28, controlling the switching of the working modes of the internal machine.
In summary, according to the method for controlling the pressure difference of the refrigerant flow dividing device in the embodiment of the present invention, the current working mode of the internal machine is obtained, the working mode switching signal of the internal machine is obtained, and further, the pressure difference of the refrigerant flow dividing device is controlled according to the current working mode of the internal machine and the working mode switching signal of the internal machine. Therefore, according to the current working mode of the inner machine and the working mode switching signal of the inner machine, when the working mode of the inner machine is switched, the pressure equalization of the inner machine side is realized, so that the pressure difference between two sides of the corresponding on-off valve in the refrigerant shunting device is reduced, and therefore, in the working mode switching process of the inner machine, the noise generated when the refrigerant shunting device switches the on-off valve is reduced or avoided.
Fig. 7 is a block diagram illustrating a pressure difference control device of a refrigerant distribution device according to an embodiment of the present invention.
As shown in fig. 7, the control device 100 for controlling the pressure difference of the refrigerant flow dividing device includes: the device comprises an acquisition module 1 and a control module 2.
The acquisition module 1 is used for acquiring the current working mode of the internal machine and acquiring a working mode switching signal of the internal machine; the control module 2 is used for controlling the pressure difference of the refrigerant shunting device according to the current working mode of the internal machine and the working mode switching signal of the internal machine.
Therefore, according to the current working mode of the inner machine and the working mode switching signal of the inner machine, when the working mode of the inner machine is switched, the pressure equalization of the inner machine side is realized to reduce the pressure difference of the refrigerant shunting device, so that in the working mode switching process of the inner machine, the noise generated when the refrigerant shunting device switches the on-off valve is reduced or avoided.
Further, according to an embodiment of the present invention, the current operation mode of the indoor unit may include a heating mode and a cooling mode.
Further, according to an embodiment of the present invention, as shown in fig. 8, the apparatus 100 for controlling a pressure difference of a refrigerant flow dividing device further includes: and a judging module 3.
The judging module 3 is used for judging whether the current working mode of the internal machine is a heating mode or not, and if so, judging whether the current working mode of the internal machine is the heating mode
When the current working mode of the indoor unit is judged to be the heating mode, judging whether a working mode switching signal of the indoor unit is that the heating mode of the indoor unit is switched to the cooling mode; the control module 2 is further configured to close a first on-off valve and a second on-off valve, corresponding to the indoor unit, in the refrigerant distribution device when the working mode switching signal of the indoor unit switches the heating mode to the cooling mode; and controlling a throttling component of the inner machine to open a first preset opening degree, and opening a fan of the inner machine.
That is to say, when the determining module 3 determines that the working mode switching signal of the internal machine is that the internal machine is switched from the heating mode to the cooling mode, the control module 2 closes the first on-off valve and the second on-off valve in the refrigerant flow distribution device corresponding to the internal machine, and controls the throttling component of the internal machine to open the first preset opening degree, and opens the fan of the internal machine to control the pressure difference of the refrigerant flow distribution device.
Further, according to an embodiment of the present invention, as shown in fig. 8, the apparatus 100 for controlling a pressure difference of a refrigerant flow dividing device further includes: a module 4 is generated.
The acquisition module 1 is further used for acquiring the temperature of the indoor unit side heat exchanger and the indoor environment temperature; the generating module 4 is configured to generate a first preset temperature and a second preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, where the first preset temperature is greater than the indoor environment temperature, and the second preset temperature is less than the indoor environment temperature; the judging module 3 is further configured to: judging whether the temperature of the indoor unit side heat exchanger is less than or equal to a first preset temperature and is greater than or equal to a second preset temperature; the control module 2 is further configured to: and when the temperature of the heat exchanger on the side of the internal machine is less than or equal to a first preset temperature and greater than or equal to a second preset temperature, starting a first on-off valve corresponding to the internal machine in the refrigerant flow dividing device.
That is to say, after obtaining interior machine side heat exchanger temperature and indoor ambient temperature through obtaining module 1, according to indoor ambient temperature, generate the first temperature of presetting and the second temperature of presetting that indoor ambient temperature corresponds through generating module 4 to when judging module 3 judges that interior machine side heat exchanger temperature is less than or equal to first temperature of presetting, and is greater than or equal to the second temperature of presetting, open the first on-off valve that corresponds with the interior machine in the refrigerant diverging device through control module 2.
Further, according to an embodiment of the present invention, the determining module 3 is further configured to determine whether the current working mode of the internal machine is the cooling mode, and when the current working mode of the internal machine is the cooling mode, determine whether the working mode switching signal of the internal machine is that the cooling mode of the internal machine is switched to the heating mode; the control module 2 is further configured to close a first on-off valve and a second on-off valve, corresponding to the internal machine, in the refrigerant flow dividing device when the working mode switching signal of the internal machine is that the internal machine is switched from the cooling mode to the heating mode; and controlling the opening degree of a throttling part of the inner machine to be a second preset opening degree, and turning on a fan of the inner machine.
That is to say, when the judging module 3 judges that the working mode switching signal of the internal machine is that the internal machine is switched from the cooling mode to the heating mode, the control module 2 is used for closing the refrigerant shunting device of the refrigerant shunting device, controlling the throttling component of the internal machine to open the second preset opening degree, and opening the fan of the internal machine so as to control the pressure difference of the refrigerant shunting device.
Further, according to an embodiment of the present invention, the obtaining module 1 is further configured to: acquiring the temperature of an internal machine side heat exchanger and the temperature of an indoor environment; the generating module 4 is further configured to generate a third preset temperature and a fourth preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, where the third preset temperature is greater than the indoor environment temperature, and the fourth preset temperature is less than the indoor environment temperature; the judgment module 3 is also used for judging whether the temperature of the heat exchanger on the inner machine side is less than or equal to a third preset temperature and is greater than or equal to a fourth preset temperature; the control module 2 is further configured to open a second on-off valve corresponding to the indoor unit in the refrigerant distribution device when the temperature of the indoor unit side heat exchanger is less than or equal to a third preset temperature and greater than or equal to a fourth preset temperature.
That is to say, after the temperature of the heat exchanger on the side of the indoor unit and the temperature of the indoor environment are acquired by the acquisition module 1, a third preset temperature and a fourth preset temperature corresponding to the temperature of the indoor environment are generated by the generation module 4 according to the temperature of the indoor environment, and when the temperature of the heat exchanger on the side of the indoor unit is judged to be less than or equal to the third preset temperature and greater than or equal to the fourth preset temperature by the judgment module 3, a second on-off valve corresponding to the indoor unit in the refrigerant flow dividing device is opened by the control module 2.
It should be understood that the control device for pressure difference of the refrigerant flow dividing device according to the embodiment of the present invention corresponds to the specific implementation of the control method for pressure difference of the refrigerant flow dividing device according to the above embodiment, and the detailed description thereof is omitted here.
In summary, according to the control device for pressure difference of the refrigerant flow dividing device in the embodiment of the present invention, the current working mode of the internal machine is obtained through the obtaining module, and the working mode switching signal of the internal machine is obtained, so that the pressure difference of the refrigerant flow dividing device is controlled through the control module according to the current working mode of the internal machine and the working mode switching signal of the internal machine. Therefore, according to the current working mode of the inner machine and the working mode switching signal of the inner machine, when the working mode of the inner machine is switched, the pressure equalization of the inner machine side is realized, so that the pressure difference between two sides of the corresponding on-off valve in the refrigerant shunting device is reduced, and therefore, in the working mode switching process of the inner machine, the noise generated when the refrigerant shunting device switches the on-off valve is reduced or avoided.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (6)
1. The method for controlling the pressure difference of the refrigerant distribution device is characterized in that the refrigerant distribution device comprises a plurality of groups of on-off valves, each group of on-off valves comprises a first on-off valve and a second on-off valve, each group of on-off valves corresponds to one indoor unit, and each group of on-off valves are mutually independent, and the method comprises the following steps:
acquiring a current working mode of an internal machine;
acquiring a working mode switching signal of the internal machine;
controlling the pressure difference of the refrigerant shunting device according to the current working mode of the internal machine and the working mode switching signal of the internal machine;
the current working mode of the internal machine comprises a heating mode and a cooling mode;
judging whether the current working mode of the internal machine is a heating mode or not;
if the current working mode of the indoor unit is a heating mode, judging whether a working mode switching signal of the indoor unit is that the heating mode of the indoor unit is switched to a cooling mode;
if the working mode switching signal of the internal machine is that the internal machine is switched from a heating mode to a cooling mode, closing the first on-off valve and the second on-off valve corresponding to the internal machine in the refrigerant shunting device;
controlling a throttling component of the inner machine to open a first preset opening degree, and opening a fan of the inner machine;
acquiring the temperature of an internal machine side heat exchanger and the temperature of an indoor environment;
generating a first preset temperature and a second preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, wherein the first preset temperature is higher than the indoor environment temperature, and the second preset temperature is lower than the indoor environment temperature;
judging whether the temperature of the heat exchanger on the inner machine side is less than or equal to a first preset temperature and is greater than or equal to a second preset temperature;
and if the temperature of the heat exchanger on the side of the internal machine is less than or equal to a first preset temperature and greater than or equal to a second preset temperature, starting the first on-off valve corresponding to the internal machine in the refrigerant flow dividing device.
2. The method as claimed in claim 1, wherein the controlling the pressure difference of the refrigerant dividing device according to the current operation mode of the indoor unit and the operation mode switching signal of the indoor unit further comprises:
judging whether the current working mode of the internal machine is a refrigeration mode or not;
if the current working mode of the internal machine is a refrigeration mode, judging whether a working mode switching signal of the internal machine is that the internal machine is switched from the refrigeration mode to a heating mode;
if the working mode switching signal of the internal machine is that the internal machine is switched from a refrigeration mode to a heating mode, closing the first on-off valve and the second on-off valve corresponding to the internal machine in the refrigerant shunting device;
and controlling the opening degree of a throttling part of the inner machine to be a second preset opening degree, and turning on a fan of the inner machine.
3. The method according to claim 2, wherein after the controlling the throttle member of the internal machine to open by a second preset opening degree and the fan of the internal machine to open, the method further comprises:
acquiring the temperature of an internal machine side heat exchanger and the temperature of an indoor environment;
generating a third preset temperature and a fourth preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, wherein the third preset temperature is higher than the indoor environment temperature, and the fourth preset temperature is lower than the indoor environment temperature;
judging whether the temperature of the heat exchanger on the inner machine side is less than or equal to a third preset temperature and is greater than or equal to a fourth preset temperature;
and if the temperature of the heat exchanger on the side of the internal machine is less than or equal to a third preset temperature and greater than or equal to a fourth preset temperature, opening a second on-off valve corresponding to the internal machine in the refrigerant flow dividing device.
4. The utility model provides a controlling means of refrigerant diverging device pressure differential which characterized in that, refrigerant diverging device includes the multiunit on-off valve, and every group on-off valve includes first on-off valve and second on-off valve, wherein, every group on-off valve corresponds an indoor unit, mutual independence between every group on-off valve, the device includes:
the acquisition module is used for acquiring the current working mode of the internal machine and acquiring a working mode switching signal of the internal machine;
the control module is used for controlling the pressure difference of the refrigerant shunting device according to the current working mode of the internal machine and the working mode switching signal of the internal machine;
the current working mode of the internal machine comprises a heating mode and a cooling mode;
the control device further comprises a judging module, wherein the judging module is used for judging whether the current working mode of the indoor unit is a heating mode or not, and judging whether a working mode switching signal of the indoor unit is that the heating mode of the indoor unit is switched to a cooling mode when the current working mode of the indoor unit is judged to be the heating mode;
the control module is further configured to close the first on-off valve and the second on-off valve, corresponding to the internal machine, in the refrigerant distribution device when a working mode switching signal of the internal machine indicates that the internal machine is switched from a heating mode to a cooling mode;
controlling a throttling component of the inner machine to open a first preset opening degree, and opening a fan of the inner machine;
the control device further includes: a generation module;
the acquisition module is also used for acquiring the temperature of the indoor unit side heat exchanger and the indoor environment temperature;
the generating module is used for generating a first preset temperature and a second preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, wherein the first preset temperature is higher than the indoor environment temperature, and the second preset temperature is lower than the indoor environment temperature;
the judging module is further configured to: judging whether the temperature of the heat exchanger on the inner machine side is less than or equal to a first preset temperature and is greater than or equal to a second preset temperature;
the control module is further configured to: and when the temperature of the heat exchanger on the inner machine side is less than or equal to a first preset temperature and is greater than or equal to a second preset temperature, opening the first on-off valve corresponding to the inner machine in the refrigerant flow dividing device.
5. The apparatus of claim 4,
the judging module is also used for judging whether the current working mode of the internal machine is a refrigerating mode or not, and judging whether a working mode switching signal of the internal machine is that the refrigerating mode of the internal machine is switched to a heating mode when the current working mode of the internal machine is the refrigerating mode;
the control module is further used for closing the first on-off valve and the second on-off valve corresponding to the internal machine in the refrigerant flow dividing device when the working mode switching signal of the internal machine is that the internal machine is switched from the refrigeration mode to the heating mode;
and controlling the opening degree of a throttling part of the inner machine to be a second preset opening degree, and turning on a fan of the inner machine.
6. The apparatus of claim 5,
the acquisition module is also used for acquiring the temperature of the indoor unit side heat exchanger and the indoor environment temperature;
the generating module is further configured to generate a third preset temperature and a fourth preset temperature corresponding to the indoor environment temperature according to the indoor environment temperature, where the third preset temperature is greater than the indoor environment temperature, and the fourth preset temperature is less than the indoor environment temperature;
the judging module is also used for judging whether the temperature of the heat exchanger on the inner machine side is less than or equal to a third preset temperature and is greater than or equal to a fourth preset temperature;
the control module is further used for opening a second on-off valve corresponding to the indoor unit in the refrigerant distribution device when the temperature of the heat exchanger on the side of the indoor unit is less than or equal to a third preset temperature and is greater than or equal to a fourth preset temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910071240.3A CN109798628B (en) | 2019-01-25 | 2019-01-25 | Method and device for controlling pressure difference of refrigerant flow dividing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910071240.3A CN109798628B (en) | 2019-01-25 | 2019-01-25 | Method and device for controlling pressure difference of refrigerant flow dividing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109798628A CN109798628A (en) | 2019-05-24 |
| CN109798628B true CN109798628B (en) | 2021-01-05 |
Family
ID=66558847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910071240.3A Active CN109798628B (en) | 2019-01-25 | 2019-01-25 | Method and device for controlling pressure difference of refrigerant flow dividing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109798628B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111473468B (en) * | 2020-04-24 | 2021-07-16 | 宁波奥克斯电气股份有限公司 | Control method and device for reducing noise through adjustment of outer valve and air conditioner |
| CN111473467B (en) * | 2020-04-24 | 2021-09-21 | 宁波奥克斯电气股份有限公司 | Control method and device for reducing noise by controlling differential pressure and air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086397A (en) * | 2006-06-06 | 2007-12-12 | 乐金电子(天津)电器有限公司 | Air conditioner refrigerant conversion device control method |
| KR20100078478A (en) * | 2008-12-30 | 2010-07-08 | 위니아만도 주식회사 | Control method of air conditioner |
| CN103017295A (en) * | 2012-12-05 | 2013-04-03 | 宁波奥克斯电气有限公司 | Refrigeration-to-heating mode starting method of multi-split air conditioner |
| CN106440455A (en) * | 2016-09-19 | 2017-02-22 | 广东美的暖通设备有限公司 | Multi-split system and switching control method of operating mode of indoor units thereof |
| US10094604B2 (en) * | 2012-12-20 | 2018-10-09 | Mitsubishi Electric Corporation | Air-conditioning apparatus with a plurality of indoor units and a cooling and heating mixed mode of operation |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5237833A (en) * | 1991-01-10 | 1993-08-24 | Mitsubishi Denki Kabushiki Kaisha | Air-conditioning system |
| KR100504887B1 (en) * | 2003-04-17 | 2005-07-29 | 엘지전자 주식회사 | Cooling/heating valve switching method for multi-type air conditioner in using cooling /heating the same time |
| KR100839596B1 (en) * | 2007-04-17 | 2008-06-20 | 한밭대학교 산학협력단 | Multi airconditioner |
| CN102192583B (en) * | 2010-03-12 | 2013-04-03 | 珠海格力电器股份有限公司 | Air-conditioner and method for switching working mode of air-conditioner |
| CN104748262B (en) * | 2015-03-31 | 2017-05-03 | 广东美的暖通设备有限公司 | Multi-split system |
| CN104748239B (en) * | 2015-03-31 | 2017-10-31 | 广东美的暖通设备有限公司 | Multiple on-line system |
| CN106152406B (en) * | 2016-07-04 | 2019-06-25 | 珠海格力电器股份有限公司 | A kind of control method of air-conditioning system and its cold and hot pattern switching |
| KR20180117935A (en) * | 2017-04-20 | 2018-10-30 | 엘지전자 주식회사 | Multi-type air conditioner |
| CN107238161B (en) * | 2017-07-25 | 2020-05-08 | 广东美的暖通设备有限公司 | Multi-split system and mode switching control method thereof |
-
2019
- 2019-01-25 CN CN201910071240.3A patent/CN109798628B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086397A (en) * | 2006-06-06 | 2007-12-12 | 乐金电子(天津)电器有限公司 | Air conditioner refrigerant conversion device control method |
| KR20100078478A (en) * | 2008-12-30 | 2010-07-08 | 위니아만도 주식회사 | Control method of air conditioner |
| CN103017295A (en) * | 2012-12-05 | 2013-04-03 | 宁波奥克斯电气有限公司 | Refrigeration-to-heating mode starting method of multi-split air conditioner |
| US10094604B2 (en) * | 2012-12-20 | 2018-10-09 | Mitsubishi Electric Corporation | Air-conditioning apparatus with a plurality of indoor units and a cooling and heating mixed mode of operation |
| CN106440455A (en) * | 2016-09-19 | 2017-02-22 | 广东美的暖通设备有限公司 | Multi-split system and switching control method of operating mode of indoor units thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109798628A (en) | 2019-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109945564B (en) | Multi-split air conditioning system and oil return method and oil return device of compressor of multi-split air conditioning system | |
| CN107036230B (en) | Air conditioner and method of controlling the same | |
| JP2004020179A (en) | Air conditioning device and its control method | |
| CN109798628B (en) | Method and device for controlling pressure difference of refrigerant flow dividing device | |
| JP5204987B2 (en) | Air conditioning system and control method of air conditioning system | |
| CN107036245B (en) | Multi-split air conditioner system and control device and method of outdoor compressor thereof | |
| KR20030097179A (en) | Heat-Pump Air Conditioner's Operating Method | |
| CN109883018B (en) | Air volume control method and device for air conditioning system | |
| JP2007255832A (en) | Air conditioning system | |
| CN110398033B (en) | Refrigerant circulation control method and device of heat recovery multi-split system | |
| CN107339780B (en) | Control method and device for differential pressure of high-pressure side and low-pressure side of multi-connected air conditioner compressor and air conditioner | |
| CN109883019B (en) | Air volume control method and device for air conditioning system | |
| CN109708273B (en) | Control method and device for low-temperature refrigerating air valve | |
| JP2007205615A (en) | Air conditioner | |
| CN109899927B (en) | Method and device for reducing refrigerant flowing noise of multi-split system | |
| WO2013161256A1 (en) | Heat pump device | |
| CN107763886B (en) | Control method and system of air conditioner and air conditioner | |
| CN111397164B (en) | Multi-split air conditioning system and control method and control device thereof | |
| CN111237982B (en) | Air conditioner, control method and device thereof, electronic equipment and storage medium | |
| JPH07103584A (en) | Air-conditioning equipment | |
| CN114087738A (en) | Control method and device of air conditioner, storage medium and air conditioner | |
| CN108444142B (en) | Air conditioner control method and air conditioner | |
| CN109357355B (en) | Air conditioner on-off control method | |
| CN107940796B (en) | Multi-split air conditioner system and starting control method of outdoor unit thereof | |
| CN111692722A (en) | Air conditioning system, control method and device thereof and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |