CN110686435A - Control method and control device for heating belt of fixed-frequency compressor - Google Patents
Control method and control device for heating belt of fixed-frequency compressor Download PDFInfo
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- CN110686435A CN110686435A CN201810724415.1A CN201810724415A CN110686435A CN 110686435 A CN110686435 A CN 110686435A CN 201810724415 A CN201810724415 A CN 201810724415A CN 110686435 A CN110686435 A CN 110686435A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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Abstract
The invention discloses a control method and a control device for a heating belt of a fixed-frequency compressor, and belongs to the field of compressors. The control method includes determining a state of a compressor; when the compressor is not started to work, acquiring the external environment temperature Tao; when Tao is more than T0, controlling the heating belt not to be electrified; when Tao is less than or equal to T0, acquiring exhaust temperature Td and coil temperature Tc; when Td is less than or equal to Tc +5 ℃, controlling the heating belt to be electrified. The control device comprises a first determination module, a second determination module and a control module, wherein the first determination module is used for determining the state of the compressor; the first acquisition module is used for acquiring the external environment temperature Tao when the compressor is not started to work; the first control module is used for controlling the heating belt not to be electrified when Tao is more than T0; a second acquisition module for acquiring an exhaust temperature Td and a coil temperature Tc when Tao is less than or equal to T0; and the second control module is used for controlling the heating belt to be electrified when the Td is less than or equal to Tc +5 ℃. The control method and the control device can reduce the energy consumption of the heating belt of the fixed-frequency compressor in use and reduce the loss of the heating belt.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a control method and a control device for a heating belt of a fixed-frequency compressor.
Background
The heating belt is an electric device which is wound on the shell of the compressor, generates heat when being electrified and is used for ensuring the oil temperature of the compressor so as to ensure the normal work of the compressor.
At present, a fixed-frequency compressor of a unit is usually controlled by a normally open main contact of an alternating current contactor, and a corresponding heating belt is controlled by an auxiliary normally closed contact of the contactor. When the unit is electrified, the heating belt is electrified to work through the normally closed contact of the contactor, when the normally open contact of the contactor is closed, the normally closed contact of the contactor is disconnected when the compressor is started, and the heating belt is powered off and stops working. In the running process of the unit, as long as the unit is not powered off, the heating belt is powered on and off along with the start and stop of the compressor in the mode.
Under the condition that the unit is powered on but is not started for use, the heating belt continuously consumes power, and meaningless energy consumption is generated. Under the condition that the unit is started and used, after the compressor meets the stop condition and stops, the compressor often stops for a short time and then starts, and the short-time electrifying work of the heating belt is completely unnecessary during the short-time stopping and restarting. When the external environment temperature is high, the compressor can be started without heating the heating belt, but the heating belt is still continuously electrified under the existing control method. Under the existing heating belt control method, the energy consumption of the heating belt of the fixed-frequency compressor is high in use, and the loss of the heating belt is large.
Disclosure of Invention
The embodiment of the invention provides a control method and a control device for a heating belt of a fixed-frequency compressor. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of the embodiments of the present invention, there is provided a method for controlling a heating belt of a fixed-frequency compressor, including: determining the state of a compressor, wherein the state of the compressor comprises the compressor non-starting work and the compressor starting work; when the compressor is not started to work, acquiring the external environment temperature Tao; when Tao is larger than a set value T0, the heating belt is controlled not to be electrified, Tao is larger than a set value T0, the external environment temperature is enough to start the compressor to work, the heating belt is not needed to be electrified for heating, and energy consumption is reduced; when Tao is less than or equal to T0, acquiring exhaust temperature Td and coil temperature Tc; when Td is less than or equal to Tc +5 ℃, controlling the heating belt to be electrified. When Tao is less than or equal to T0, if the oil temperature of the compressor is not enough to start the compressor, namely Td is less than or equal to Tc +5 ℃, the heating belt needs to be controlled to be electrified; on the contrary, if the oil temperature of the compressor is enough to start the compressor, i.e., Td > Tc +5 ℃, the heating belt is not required to be electrified for heating, thereby reducing the energy consumption of the heating belt and reducing the loss of the heating belt.
Optionally, the control method further includes: acquiring the duration t1 of the electrification of the heating belt after the electrification of the heating belt; determining a set value t10 of t1 based on Tao, wherein Tao is negatively correlated with t 10; when t1 equals t10, the control heating belt is powered off. When the duration t1 of the heating belt is equal to the set value t10, the oil temperature of the compressor can enable the compressor to start to work, and at the moment, the heating belt is controlled to be powered off, so that the heating belt is prevented from continuing to heat to generate meaningless energy consumption.
Optionally, the control method further includes: after the heating belt is electrified, when Td is more than or equal to Tc +10 ℃, obtaining the duration t2 of the Td more than or equal to Tc +10 ℃; when t2 is equal to the set value t20, the heating belt is controlled to be powered off. The compressor is heated after the heating belt is electrified, when the Td is more than or equal to the Tc +10 ℃, the oil temperature of the compressor can enable the compressor to start to work, when the duration t2 of the Td is more than or equal to the Tc +10 ℃ is equal to the set value t20, the oil temperature of the compressor is uniform and stable, at the moment, the heating belt is controlled to be powered off, and the meaningless energy consumption caused by the fact that the heating belt is continuously heated is avoided.
Optionally, the control method further includes: after the heating belt is powered off, acquiring the duration t3 of the power-off of the heating belt; determining a set value t30 of t3 according to Tao, wherein Tao is positively correlated with t 30; when t3 equals t30, the determining the state of the compressor is performed. When the duration t3 of the power failure of the heating belt is equal to the set value t30, the state of the compressor is determined again so as to ensure the starting operation of the compressor.
Optionally, the control method further includes: after the state of the compressor is determined, when the compressor starts to work, the state of a heating belt is determined, wherein the state of the heating belt comprises an electrified state and a power-off state; when the state of the heating belt is an energized state, acquiring a duration t of energization of the heating belt from when it is determined that the state of the heating belt is the energized state; when t is equal to the set value t0, the heating belt is controlled to be powered off. When the duration t of the heating belt energization from the time when the state of the heating belt is determined to be the energized state is equal to the set value t0, the heating belt is not required to be energized to continue heating, the energy consumption of the heating belt is reduced, and the loss of the heating belt is reduced.
According to a second aspect of the embodiments of the present invention, there is provided a control apparatus for a heating zone of a fixed-frequency compressor, including a first determining module, configured to determine a state of the compressor, where the state of the compressor includes a compressor non-start operation and a compressor start operation; the first acquisition module is used for acquiring the external environment temperature Tao when the compressor is not started to work; the first control module is used for controlling the heating belt not to be electrified when Tao is larger than a set value T0, the Tao is larger than a set value T0, the external environment temperature is enough to start the compressor to work, the heating belt is not needed to be electrified for heating, and the energy consumption is reduced; a second acquisition module for acquiring an exhaust temperature Td and a coil temperature Tc when Tao is less than or equal to T0; and the second control module is used for controlling the heating belt to be electrified when the Td is less than or equal to Tc +5 ℃. When Tao is less than or equal to T0, if the oil temperature of the compressor is not enough to start the compressor, namely Td is less than or equal to Tc +5 ℃, the heating belt needs to be controlled to be electrified; on the contrary, if the oil temperature of the compressor is enough to start the compressor, i.e., Td > Tc +5 ℃, the heating belt is not required to be electrified for heating, thereby reducing the energy consumption of the heating belt and reducing the loss of the heating belt.
Optionally, the control device further includes: the third acquiring module is used for acquiring the duration t1 of the electrification of the heating belt after the electrification of the heating belt; a second determination module for determining a set value t10 of t1 according to Tao; and the third control module is used for controlling the power off of the heating belt when t1 is equal to t 10. When the duration t1 of the heating belt is equal to the set value t10, the oil temperature of the compressor can enable the compressor to start to work, and at the moment, the third control module controls the heating belt to be powered off, so that the meaningless energy consumption caused by the fact that the heating belt is continuously heated is avoided.
Optionally, the control device further includes: the fourth acquisition module is used for acquiring the duration t2 of Td being more than or equal to Tc +10 ℃ when Td is more than or equal to Tc +10 ℃ after the heating belt is electrified; and the fourth control module is used for controlling the power off of the heating belt when t2 is equal to the set value t 20. And after the heating belt is electrified, the heating belt heats the compressor, when the Td is more than or equal to Tc +10 ℃, the oil temperature of the compressor can enable the compressor to start to work, when the duration t2 of the Td is more than or equal to Tc +10 ℃ is equal to a set value t20, the oil temperature of the compressor is uniform and stable, and at the moment, the fourth control module controls the heating belt to be powered off, so that the meaningless energy consumption caused by continuous heating of the heating belt is avoided.
Optionally, the control device further includes: the fifth acquisition module is used for acquiring the power-off duration t3 of the heating belt after the heating belt is powered off; a third determining module, configured to determine a set value t30 of t3 according to Tao; a first execution module to execute determining a state of the compressor when t3 equals t 30. When the duration t3 of the heating belt power-off is equal to the set value t30, the first execution module executes the re-determination of the state of the compressor to ensure the compressor to start working.
Optionally, the control device further includes: the fourth determining module is used for determining the state of the heating belt when the compressor starts to work after the first determining module determines the state of the compressor; a sixth acquisition module configured to acquire, when the state of the heating belt is the energized state, a duration t of energization of the heating belt from when it is determined that the state of the heating belt is the energized state; and the fifth control module is used for controlling the power off of the heating belt when t is equal to the set value t 0. When the duration t of the heating belt energization from the time when the fourth determination module determines that the state of the heating belt is the energized state is equal to the set value t0, the heating belt is not required to be energized to continue heating, so that the energy consumption of the heating belt is reduced, and the loss of the heating belt is reduced.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the method and the device for controlling the heating belt of the constant-frequency compressor control the heating belt according to the external environment temperature Tao, the exhaust temperature Td and the coil temperature Tc, reduce the energy consumption of the heating belt of the constant-frequency compressor in use and reduce the loss of the heating belt.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a first flowchart illustrating a method of controlling a constant frequency compressor heat belt in accordance with an exemplary embodiment;
FIG. 2 is a flow diagram illustrating a second method of controlling a constant frequency compressor heating belt in accordance with an exemplary embodiment;
FIG. 3 is a first block diagram illustrating a control arrangement for a constant frequency compressor heating belt in accordance with an exemplary embodiment;
FIG. 4 is a second block diagram of a control arrangement for a fixed frequency compressor heating belt in accordance with an exemplary embodiment;
description of reference numerals: 200-control device, 201-first determination module, 202-first acquisition module, 203-first control module, 204-second acquisition module, 205-second control module, 206-third acquisition module, 207-second determination module, 208-third control module, 209-fourth acquisition module, 210-fourth control module, 211-fifth acquisition module, 212-third determination module, 213-first execution module, 214-fourth determination module, 215-sixth acquisition module, 216-fifth control module.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the structures, products and the like disclosed by the embodiments, the description is relatively simple because the structures, the products and the like correspond to the parts disclosed by the embodiments, and the relevant parts can be just described by referring to the method part.
Fig. 1 is a first flowchart illustrating a method for controlling a heating belt of a fixed-frequency compressor according to an exemplary embodiment.
As shown in fig. 1, the present invention provides a method for controlling a heating belt of a fixed-frequency compressor, which can be used to reduce energy consumption of the heating belt of the fixed-frequency compressor in use and reduce loss of the heating belt, and specifically, the flow steps of the control method include:
s101, determining the state of a compressor;
after the unit is electrified, the states of the compressor comprise compressor non-starting work and compressor starting work, and different control methods are adopted for the two states of the compressor non-starting work and the compressor starting work.
S102, when the compressor is not started to work, acquiring the external environment temperature Tao;
s103, when Tao is larger than a set value T0, controlling the heating belt not to be electrified;
when the external environment temperature is high, namely Tao is greater than a set value T0, the compressor is started without heating the heating belt, the external environment temperature is enough to start the compressor to work, the heating belt is not needed to be electrified for heating, and the energy consumption is reduced. The value range of the set value T0 is 17-20 ℃. More specifically, T0 takes on values of 17 deg.C, 18 deg.C, 19 deg.C or 20 deg.C.
S104, when Tao is less than or equal to T0, acquiring an exhaust temperature Td and a coil temperature Tc;
when Tao is less than or equal to T0, if the oil temperature of the compressor is not enough to start the compressor, the heating belt needs to be controlled to be electrified to start the compressor.
S105, controlling the heating belt to be electrified when the Td is less than or equal to Tc +5 ℃.
When Tao is less than or equal to T0, if the oil temperature of the compressor is not enough to start the compressor, namely Td is less than or equal to Tc +5 ℃, the heating belt needs to be controlled to be electrified; on the contrary, if the oil temperature of the compressor is enough to start the compressor, i.e., Td > Tc +5 ℃, the heating belt is not required to be electrified for heating, thereby reducing the energy consumption of the heating belt and reducing the loss of the heating belt.
FIG. 2 is a flow diagram illustrating a second method of controlling a constant frequency compressor heating belt in accordance with an exemplary embodiment;
as shown in fig. 2, optionally, the control method further includes: acquiring the duration t1 of the electrification of the heating belt after the electrification of the heating belt; determining a set value t10 of t1 based on Tao, wherein Tao is negatively correlated with t 10; when t1 equals t10, the control heating belt is powered off. When the duration t1 of the heating belt is equal to the set value t10, the compressor can be started by the oil temperature of the compressor after the heating belt is electrified for heating t1, and at the moment, the heating belt is controlled to be powered off, so that the meaningless energy consumption caused by the fact that the heating belt is continuously heated is avoided.
The value range of the set value t10 is 1-5 h. More specifically, t10 takes the value of 1h, 2h, 3h, 4h or 5 h.
Tao and T10 are in negative correlation, and when the temperature is more than 10 ℃ and the Tao is less than or equal to T0, the value of T10 is 1 h; when Tao is more than 0 ℃ and less than or equal to 10 ℃, t10 takes a value of 2 h; when Tao is more than-10 ℃ and less than or equal to 0 ℃, t10 takes a value of 3 h; when Tao is less than or equal to-10 ℃, the value of t10 is 4 h.
In addition to controlling the power-off of the heating belt by using the duration t1 of the power-on of the heating belt, the power-off of the heating belt can be controlled by using the duration t2 that the exhaust temperature Td and the coil temperature Tc meet the condition that the Td is more than or equal to Tc +10 ℃.
Optionally, the control method further includes: after the heating belt is electrified, when Td is more than or equal to Tc +10 ℃, obtaining the duration t2 of the Td more than or equal to Tc +10 ℃; when t2 is equal to the set value t20, the heating belt is controlled to be powered off. The compressor is heated after the heating belt is electrified, when the Td is more than or equal to the Tc +10 ℃, the oil temperature of the compressor can enable the compressor to start to work, when the duration t2 of the Td is more than or equal to the Tc +10 ℃ is equal to the set value t20, the oil temperature of the compressor is uniform and stable, at the moment, the heating belt is controlled to be powered off, and the meaningless energy consumption caused by the fact that the heating belt is continuously heated is avoided.
The value range of the set value t20 is 4-8 min. More specifically, the value of t20 is 4min, 5min, 6min, 7min or 8 min.
After the heating belt is controlled to be powered off by using the duration t1 of the energization of the heating belt or using the duration t2 that the exhaust temperature Td and the coil temperature Tc meet the condition that the Td is more than or equal to Tc +10 ℃, when the duration t3 of the power-off of the heating belt meets the set condition, the state of the compressor is determined again, and when the compressor is not started to work, the external environment temperature Tao is obtained; when Tao is larger than a set value T0, controlling the heating belt not to be electrified; when Tao is less than or equal to T0, acquiring exhaust temperature Td and coil temperature Tc; when Td is less than or equal to Tc +5 ℃, controlling the heating belt to be electrified.
Optionally, the control method further includes: after the heating belt is powered off, acquiring the duration t3 of the power-off of the heating belt; determining a set value t30 of t3 according to Tao, wherein Tao is positively correlated with t 30; when t3 equals t30, determining the state of the compressor is performed. When the duration t3 of the heating belt power failure is equal to the set value t30, the state of the compressor is determined again so as to ensure that the compressor starts to work normally.
The value range of the set value t30 is 1-5 h. More specifically, t30 takes the value of 1h, 2h, 3h, 4h or 5 h.
Tao is positively correlated with T30, and when Tao is more than 10 ℃ and is less than or equal to T0, T30 takes a value of 4 h; when Tao is more than 0 ℃ and less than or equal to 10 ℃, t30 takes a value of 3 h; when Tao is more than-10 ℃ and less than or equal to 0 ℃, t30 takes a value of 2 h; when Tao is less than or equal to-10 ℃, the value of t30 is 1 h.
Optionally, the control method further includes: after the state of the compressor is determined, when the compressor starts to work, the state of the heating belt is determined, and the state of the heating belt comprises an electrified state and a power-off state. When the state of the heating belt is the power-off state, the power-off state of the heating belt is maintained. When the state of the heating belt is an energized state, acquiring a duration t of energization of the heating belt from when it is determined that the state of the heating belt is the energized state; when t is equal to the set value t0, the heating belt is controlled to be powered off. When the duration t of the heating belt energization from the time when the state of the heating belt is determined to be the energized state is equal to the set value t0, the heating belt is not required to be energized to continue heating, the energy consumption of the heating belt is reduced, and the loss of the heating belt is reduced.
The value range of the set value t0 is 4-8 min. More specifically, the value of t0 is 4min, 5min, 6min, 7min or 8 min.
Fig. 3 is a first block diagram of a control device for a heating belt of a fixed-frequency compressor according to an exemplary embodiment.
As shown in fig. 3, the present invention provides a control device 200 for a heating belt of a fixed-frequency compressor, which can be used to reduce energy consumption of the heating belt of the fixed-frequency compressor in use and reduce consumption of the heating belt, specifically, the control device 200 includes:
a first determination module 201 for determining a state of the compressor; after the unit is powered on, the state of the compressor comprises the compressor non-starting work and the compressor starting work.
The first obtaining module 202 is configured to obtain an external environment temperature Tao when the compressor is not started to operate;
the first control module 203 is used for controlling the heating belt not to be electrified when Tao is larger than a set value T0;
when the external environment temperature is high, namely Tao is greater than a set value T0, the compressor is started without heating the heating belt, the external environment temperature is enough to start the compressor to work, the heating belt is not needed to be electrified for heating, and the energy consumption is reduced. The value range of the set value T0 is 17-20 ℃. More specifically, T0 takes on values of 17 deg.C, 18 deg.C, 19 deg.C or 20 deg.C.
A second acquisition module 204 for acquiring an exhaust temperature Td and a coil temperature Tc when Tao is less than or equal to T0; when Tao is less than or equal to T0, if the oil temperature of the compressor is not enough to start the compressor, the heating belt needs to be controlled to be electrified to start the compressor.
And the second control module 205 is used for controlling the heating belt to be electrified when the Td is less than or equal to the Tc +5 ℃.
When Tao is less than or equal to T0, if the oil temperature of the compressor is not enough to start the compressor, namely Td is less than or equal to Tc +5 ℃, the second control module 205 is required to control the heating belt to be electrified; on the contrary, if the oil temperature of the compressor is enough to start the compressor, i.e., Td > Tc +5 ℃, the heating belt is not required to be electrified for heating, thereby reducing the energy consumption of the heating belt and reducing the loss of the heating belt.
Fig. 4 is a second block diagram of a control device for a heating belt of a fixed-frequency compressor according to an exemplary embodiment.
As shown in fig. 4, optionally, the control device 200 further includes: a third obtaining module 206, configured to obtain a duration t1 of the heating belt being powered after the heating belt is powered on; a second determination module 207 for determining a set value t10 of t1 according to Tao; and a third control module 208 for controlling the heating belt to be powered off when t1 is equal to t 10. When the duration t1 of the heating belt is equal to the set value t10, the compressor can be started by the oil temperature of the compressor through the time t1 of the heating belt being electrified, and at the moment, the third control module 208 controls the heating belt to be powered off, so that the heating belt is prevented from being continuously heated to generate meaningless energy consumption.
The value range of the set value t10 is 1-5 h. More specifically, t10 takes the value of 1h, 2h, 3h, 4h or 5 h.
Tao and T10 are in negative correlation, and when the temperature is more than 10 ℃ and the Tao is less than or equal to T0, the value of T10 is 1 h; when Tao is more than 0 ℃ and less than or equal to 10 ℃, t10 takes a value of 2 h; when Tao is more than-10 ℃ and less than or equal to 0 ℃, t10 takes a value of 3 h; when Tao is less than or equal to-10 ℃, the value of t10 is 4 h.
Optionally, the control device 200 further includes: the fourth obtaining module 209 is used for obtaining the duration t2 of the Td being more than or equal to the Tc +10 ℃ when the Td is more than or equal to the Tc +10 ℃ after the heating belt is electrified; and a fourth control module 210 for controlling the heating belt to be de-energized when t2 is equal to the set point t 20. The compressor is heated after the heating belt is electrified, when the Td is more than or equal to the Tc +10 ℃, the oil temperature of the compressor can enable the compressor to start to work, when the duration t2 of the Td is more than or equal to the Tc +10 ℃ is equal to the set value t20, the oil temperature of the compressor is uniform and stable, at the moment, the heating belt is controlled to be powered off, and the meaningless energy consumption caused by the fact that the heating belt is continuously heated is avoided.
The value range of the set value t20 is 4-8 min. More specifically, the value of t20 is 4min, 5min, 6min, 7min or 8 min.
Optionally, the control device 200 further includes: a fifth obtaining module 211, configured to obtain a duration t3 of power failure of the heating belt after the heating belt is powered off; a third determining module 212 for determining a set value t30 of t3 according to Tao; a first performing module 213 for performing the determining the state of the compressor when t3 equals t 30. When the duration t3 of the heating belt power-off is equal to the set value t30, the first execution module 213 executes the re-determination of the state of the compressor to ensure the compressor starts to work normally.
The value range of the set value t30 is 1-5 h. More specifically, t30 takes the value of 1h, 2h, 3h, 4h or 5 h.
Tao is positively correlated with T30, and when Tao is more than 10 ℃ and is less than or equal to T0, T30 takes a value of 4 h; when Tao is more than 0 ℃ and less than or equal to 10 ℃, t30 takes a value of 3 h; when Tao is more than-10 ℃ and less than or equal to 0 ℃, t30 takes a value of 2 h; when Tao is less than or equal to-10 ℃, the value of t30 is 1 h.
Optionally, the control device 200 further includes: a fourth determining module 214, configured to determine, after the first determining module 201 determines the state of the compressor, the state of the heating zone when the compressor starts to operate; a sixth acquiring module 215 for acquiring, when the state of the heating belt is the energized state, a duration t of energization of the heating belt from when it is determined that the state of the heating belt is the energized state; and a fifth control module 216 for controlling the heating belt to be de-energized when t is equal to a set value t 0. When the duration t of the heating belt energization from the time when the state of the heating belt is determined to be the energized state is equal to the set value t0, the heating belt is not required to be energized to continue heating, the energy consumption of the heating belt is reduced, and the loss of the heating belt is reduced.
The value range of the set value t0 is 4-8 min. More specifically, the value of t0 is 4min, 5min, 6min, 7min or 8 min.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, and/or components.
The corresponding structures, materials, acts, and equivalents of all means or step plus function elements in the claims below are intended to include any structure, material, or act for performing the function in combination with other claimed elements as specifically claimed. The description of the present invention has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope of the invention. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (10)
1. A control method for a heating belt of a fixed-frequency compressor is characterized by comprising the following steps:
determining a state of the compressor;
when the compressor is not started to work, acquiring the external environment temperature Tao;
when Tao is larger than a set value T0, controlling the heating belt not to be electrified;
when Tao is less than or equal to T0, acquiring exhaust temperature Td and coil temperature Tc;
when Td is less than or equal to Tc +5 ℃, controlling the heating belt to be electrified.
2. The control method according to claim 1, characterized by further comprising:
acquiring the duration t1 of the electrification of the heating belt after the electrification of the heating belt;
determining a set value t10 of t1 according to Tao;
when t1 equals t10, the control heating belt is powered off.
3. The control method according to claim 1, characterized by further comprising:
after the heating belt is electrified, when Td is more than or equal to Tc +10 ℃, obtaining the duration t2 of the Td more than or equal to Tc +10 ℃;
when t2 is equal to the set value t20, the heating belt is controlled to be powered off.
4. The control method according to claim 2 or 3, characterized by further comprising:
after the heating belt is powered off, acquiring the duration t3 of the power-off of the heating belt;
determining a set value t30 of t3 according to Tao;
when t3 equals t30, the determining the state of the compressor is performed.
5. The control method according to claim 1, characterized by further comprising:
after the state of the compressor is determined, when the compressor starts to work, the state of a heating belt is determined;
when the state of the heating belt is an energized state, acquiring a duration t of energization of the heating belt from when it is determined that the state of the heating belt is the energized state;
when t is equal to the set value t0, the heating belt is controlled to be powered off.
6. A control device for a heating belt of a fixed-frequency compressor is characterized by comprising:
a first determination module for determining a state of the compressor;
the first acquisition module is used for acquiring the external environment temperature Tao when the compressor is not started to work;
the first control module is used for controlling the heating belt not to be electrified when Tao is larger than a set value T0;
a second acquisition module for acquiring an exhaust temperature Td and a coil temperature Tc when Tao is less than or equal to T0;
and the second control module is used for controlling the heating belt to be electrified when the Td is less than or equal to Tc +5 ℃.
7. The control device according to claim 6, characterized by further comprising:
the third acquiring module is used for acquiring the duration t1 of the electrification of the heating belt after the electrification of the heating belt;
a second determination module for determining a set value t10 of t1 according to Tao;
and the third control module is used for controlling the power off of the heating belt when t1 is equal to t 10.
8. The control device according to claim 6, characterized by further comprising:
the fourth acquisition module is used for acquiring the duration t2 of Td being more than or equal to Tc +10 ℃ when Td is more than or equal to Tc +10 ℃ after the heating belt is electrified;
and the fourth control module is used for controlling the power off of the heating belt when t2 is equal to the set value t 20.
9. The control device according to claim 7 or 8, characterized by further comprising:
the fifth acquisition module is used for acquiring the power-off duration t3 of the heating belt after the heating belt is powered off;
a third determining module, configured to determine a set value t30 of t3 according to Tao;
a first execution module to execute determining a state of the compressor when t3 equals t 30.
10. The control device according to claim 6, characterized by further comprising:
the fourth determining module is used for determining the state of the heating belt when the compressor starts to work after the first determining module determines the state of the compressor;
a sixth acquisition module configured to acquire, when the state of the heating belt is the energized state, a duration t of energization of the heating belt from when it is determined that the state of the heating belt is the energized state;
and the fifth control module is used for controlling the power off of the heating belt when t is equal to the set value t 0.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810724415.1A CN110686435A (en) | 2018-07-04 | 2018-07-04 | Control method and control device for heating belt of fixed-frequency compressor |
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| CN201810724415.1A CN110686435A (en) | 2018-07-04 | 2018-07-04 | Control method and control device for heating belt of fixed-frequency compressor |
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Application publication date: 20200114 |