CN114322369B - Air source heat pump system, control method, computer device, and storage medium - Google Patents
Air source heat pump system, control method, computer device, and storage medium Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000003507 refrigerant Substances 0.000 claims abstract description 112
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- 238000001514 detection method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 6
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- 238000010438 heat treatment Methods 0.000 description 10
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- 238000005516 engineering process Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
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- 239000007924 injection Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
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- 238000010521 absorption reaction Methods 0.000 description 1
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Abstract
The invention discloses an air source heat pump system, a control method, a computer device and a storage medium, wherein the air source heat pump system comprises a compressor, a main loop pipeline, an auxiliary loop pipeline, an economizer and a control module, the main loop pipeline is respectively connected with a first refrigerant interface and a second refrigerant interface of the compressor, one end of the auxiliary loop pipeline is communicated with one position in the middle of the main loop pipeline, the other end of the auxiliary loop pipeline is connected with a third refrigerant interface of the compressor, the main loop pipeline and the auxiliary loop pipeline exchange heat through the economizer, and the control module is used for controlling the auxiliary loop pipeline to keep synchronous starting with the compressor. The auxiliary loop pipeline can be started in advance in the compressor, so that the effect of the auxiliary loop pipeline can be exerted in advance, the effect of controlling the exhaust temperature of the compressor is enhanced, and even if the environment temperature is too low, the exhaust temperature of the compressor is not too high, so that the good operation of the compressor is ensured. The invention is widely applied to the technical field of heat pumps.
Description
Technical Field
The invention relates to the technical field of heat pumps, in particular to an air source heat pump system, a control method, a computer device and a storage medium.
Background
The working principle of the heat pump is a mechanical device which forces heat to flow from a low-temperature object to a high-temperature object in a reverse circulation mode, only a small amount of reverse circulation net work is consumed, larger heat supply can be obtained, and low-grade heat energy which is difficult to apply can be effectively utilized to achieve the purpose of energy conservation. When the heat pump type water heater is applied to electric appliances such as a heat pump water heater, a low-temperature object facing the heat pump is an outdoor low-temperature environment, and a high-temperature object is hot water to be heated. In the related art of the present heat pump, when the outdoor environment temperature is too low, the exhaust temperature of the compressor in the heat pump is easy to be too high, for example, when the outdoor environment temperature is lower than 0 ℃, the exhaust temperature of the compressor is easy to reach more than 130 ℃, so that the phenomena of thinning of lubricating oil, carbonization of lubricating oil, cylinder pulling of the compressor and the like are caused, and the compressor is damaged, therefore, the present heat pump electrical appliance generally cannot normally operate when the outdoor environment temperature is lower than 0 ℃, and the adaptation surface of the heat pump electrical appliance is narrow.
Disclosure of Invention
Aiming at least one technical problem of overhigh heat pump exhaust caused by overlarge temperature difference between a heat absorption end and a heating end of the heat pump in the working process of the heat pump, the invention aims to provide an air source heat pump system, a control method, a computer device and a storage medium.
In one aspect, an embodiment of the present invention includes an air source heat pump system comprising:
a compressor; the compressor comprises a first refrigerant interface, a second refrigerant interface and a third refrigerant interface; the refrigerant flow directions of the first refrigerant interface and the second refrigerant interface are opposite, and the refrigerant flow directions of the second refrigerant interface and the third refrigerant interface are the same;
a main circuit line; one end of the main loop pipeline is connected with the first refrigerant interface, and the other end of the main loop pipeline is connected with the second refrigerant interface;
an auxiliary circuit line; one end of the auxiliary circuit pipeline is communicated with one part in the middle of the main circuit pipeline, and the other end of the auxiliary circuit pipeline is connected with the third refrigerant interface;
an economizer; the main loop pipeline exchanges heat with the auxiliary loop pipeline through the economizer;
a control module; the control module is used for controlling the auxiliary circuit pipeline to be opened before the compressor is started.
Further, the controlling the auxiliary circuit to be opened before the compressor is started comprises:
before the compressor is started, the auxiliary circuit pipeline is controlled to be opened at an initial opening degree.
Further, the controlling the auxiliary circuit to be opened before the compressor is started comprises:
predicting the starting time of the compressor to obtain predicted starting time;
and controlling the auxiliary circuit pipeline to be opened at an initial opening degree in a first time period before the predicted starting time.
Further, the predicting the start time of the compressor to obtain a predicted start time includes:
the water flow detection time is a first period;
the start delay of the fan is a second period;
the shortest compressor downtime is a third period;
the starting time of the compressor is the time which is simultaneously met by the first period, the second period and the third period.
Further, the predicting the start time of the compressor to obtain a predicted start time includes:
recording a plurality of actual start-up times of the compressor;
establishing a prediction model according to the actual starting times;
and determining the predicted starting time according to the prediction model.
Further, the control module is further configured to:
acquiring an ambient temperature and a water outlet temperature;
and determining the initial opening according to the ambient temperature and the outlet water temperature.
Further, the controlling the auxiliary circuit to be opened before the compressor is started comprises:
acquiring an ambient temperature and a water outlet temperature;
and when the ambient temperature is lower than a first temperature threshold and the outlet water temperature is higher than a second temperature threshold, controlling the auxiliary circuit pipeline to be started before the compressor is started, otherwise, controlling the auxiliary circuit pipeline to be started after the compressor is started for a period of time.
In another aspect, an embodiment of the present invention further includes a control method of an air source heat pump system, where the air source heat pump system includes:
a compressor; the compressor comprises a first refrigerant interface, a second refrigerant interface and a third refrigerant interface; in the same working mode of the compressor, the refrigerant flow directions of the first refrigerant interface and the second refrigerant interface are opposite, and the refrigerant flow directions of the second refrigerant interface and the third refrigerant interface are the same;
a main circuit line; one end of the main loop pipeline is connected with the first refrigerant interface, and the other end of the main loop pipeline is connected with the second refrigerant interface;
an auxiliary circuit line; one end of the auxiliary circuit pipeline is communicated with one part in the middle of the main circuit pipeline, and the other end of the auxiliary circuit pipeline is connected with the third refrigerant interface;
an economizer; the main loop pipeline exchanges heat with the auxiliary loop pipeline through the economizer;
the control method comprises the following steps:
and controlling the auxiliary circuit pipeline to be opened before the compressor is started.
In another aspect, an embodiment of the present invention further includes a computer apparatus including a memory for storing at least one program and a processor for loading the at least one program to perform the control method of the air source heat pump system in the embodiment.
In another aspect, the embodiment of the present invention further includes a storage medium in which a processor-executable program is stored, which when executed by a processor, is configured to perform the control method of the air source heat pump system in the embodiment.
The beneficial effects of the invention are as follows: in the air source heat pump system in the embodiment, the exhaust gas quantity of the compressor can be increased on the basis of the main loop pipeline by opening the auxiliary loop pipeline, so that the exhaust gas temperature of the compressor is prevented from being too high. And under extreme working conditions, when the compressor is started, the temperature is discharged and the temperature is risen. At this time, the auxiliary circuit pipeline can be opened before the compressor is started, so that the compressor is ensured to be in front of the abrupt rise of the discharge temperature. The function of the auxiliary circuit for reducing the exhaust temperature is exerted earlier. Thereby making the rising trend of the exhaust temperature smoother. And the condition that the alarm is stopped due to the overtemperature discharge protection caused by the surge of the discharge temperature is avoided when the compressor is started. Because the air source heat pump system in the embodiment has a good temperature discharge effect, even if the environment temperature is too low, the exhaust temperature of the compressor is not too high, so that the good operation of the compressor is ensured.
Drawings
Fig. 1 is a schematic diagram of the structure and working principle of an air source heat pump system in an embodiment.
Detailed Description
In this embodiment, the structure of the air source heat pump system is shown in fig. 1, and the air source heat pump system includes a compressor, a main circuit pipeline, an auxiliary circuit pipeline, an economizer, a control module and other components, where the compressor, the main circuit pipeline, the auxiliary circuit pipeline, and the economizer are all shown in fig. 1, the control module is not shown in fig. 1, a single chip microcomputer or a dedicated controller may be used as the control module, the control module obtains a corresponding control function through programming, and the control module may collect data from sensors such as an exhaust temperature probe and an intake temperature probe in fig. 1, and run a control algorithm program to generate instructions, so as to control components such as the auxiliary circuit electronic expansion valve and the main circuit electronic expansion valve in fig. 1.
Referring to fig. 1, the compressor includes a first refrigerant port 1, a second refrigerant port 2, and a third refrigerant port 3. The refrigerant flow directions of the first refrigerant interface 1 and the second refrigerant interface 2 are opposite, and the refrigerant flow directions of the second refrigerant interface 2 and the third refrigerant interface 3 are the same.
When the compressor is in operation, that is, the heat of the wind side heat exchanger in fig. 1 is to be transferred to the water side heat exchanger, the first refrigerant port 1 of the compressor serves as a discharge port, that is, the refrigerant compressed by the compressor is discharged, and the second refrigerant port 2 and the third refrigerant port 3 have the same refrigerant flow direction, which is opposite to the refrigerant flow direction of the first refrigerant port 1, so that the second refrigerant port 2 and the third refrigerant port 3 of the compressor serve as suction ports, that is, the refrigerant is input into the compressor for compression.
Referring to fig. 1, the main circuit includes a circuit led out from a first refrigerant interface 1 and a second refrigerant interface 2, and devices such as an exhaust temperature probe, a high-pressure switch, a four-way valve, a wind side heat exchanger, a fin temperature probe, a dry filter, a main circuit electronic expansion valve, a liquid reservoir, a water side heat exchanger, an intake temperature probe, a low-pressure switch, an intake pressure probe, and the like, which are connected to these circuits, that is, one end of the main circuit is connected to the first refrigerant interface 1, and the other end of the main circuit is connected to the second refrigerant interface 2.
Referring to fig. 1, the auxiliary circuit lines include the portions of the lines marked with diagonal line segments in fig. 1, as well as auxiliary circuit electronic expansion valves connected to these lines. One end of the auxiliary circuit line is connected to a middle portion of the main circuit line, that is, a portion near the main circuit electronic expansion valve in fig. 1, until it is connected to the third refrigerant port 3.
Referring to fig. 1, a part of each of the main circuit line and the auxiliary circuit line is led into the economizer, and the main circuit line and the auxiliary circuit line can exchange heat through the economizer.
The components in fig. 1 and their functions are shown in table 1.
TABLE 1
In fig. 1, the circulation of the refrigerant in the piping is indicated by arrows, wherein the solid arrows indicate the flow direction of the refrigerant in case the air source heat pump system is operated in heating mode, i.e. the heat of the wind side heat exchanger is transferred to the water side heat exchanger; the dashed arrow indicates the flow direction of the refrigerant in the case where the air source heat pump system is operating in defrost mode, i.e. the heat of the water side heat exchanger is carried to the wind side heat exchanger.
In this embodiment, the control module may control the conduction of the four ports of the four-way valve, thereby controlling the flow direction of the refrigerant. Referring to fig. 1, the four-way valve includes four interfaces A, B, C, D, when the control module controls the connection of the interface a and the interface B and the connection of the interface C and the interface D, compressed refrigerant gas discharged from the first refrigerant interface 1 of the compressor enters the main circuit pipeline, passes through the interface a and the interface B of the four-way valve to reach the water side heat exchanger, heats water in the water side heat exchanger, and absorbs heat to raise temperature, so that circulating water can be used for heating; the refrigerant continues to pass through the main circuit line to the economizer, exchanging heat with the refrigerant in the auxiliary circuit line, specifically, the refrigerant in the main circuit line transferring heat to the refrigerant in the auxiliary circuit line; the refrigerant continues to pass through the main loop pipeline to reach the wind side heat exchanger, absorbs the heat of the environment through the wind side heat exchanger, reaches the second refrigerant interface 2 of the compressor through the interface C and the interface D of the four-way valve, is compressed by the compressor and is discharged from the first refrigerant interface 1, so that one cycle is completed.
In this embodiment, when the control module controls the connection between the interface a and the interface D and the connection between the interface B and the interface C, the flow direction of the refrigerant in the main circuit pipeline is opposite to the flow direction when the connection between the interface a and the interface B and the connection between the interface C and the interface D are conducted, so that heat of the water side heat exchanger can be transported to the air side heat exchanger, and functions such as defrosting can be realized.
Since the difference between the heating function and the defrosting function of the air source heat pump system is mainly that the flow directions of the refrigerants in the main circuit line are opposite, only the heating function of the air source heat pump system will be described.
In this embodiment, after heat exchange by the water side heat exchanger, the condensed refrigerant is split into two paths before reaching the main electronic expansion valve, and one path continues to flow along the main circuit pipeline in the original flow direction to reach the main electronic expansion valve. The control module may control opening and closing of the auxiliary circuit line by controlling an opening degree of the auxiliary electronic expansion valve, i.e., if the opening degree of the auxiliary electronic expansion valve is less than a threshold value or 0, the refrigerant will not flow into the auxiliary circuit line, the auxiliary circuit line is closed, and if the opening degree of the auxiliary electronic expansion valve is greater than the threshold value or reaches a maximum, the refrigerant will flow into the auxiliary circuit line, and the auxiliary circuit line is opened. With the auxiliary circuit line open, another path of refrigerant enters the auxiliary circuit line.
The refrigerant liquid in the auxiliary circuit pipeline is reduced to a certain intermediate pressure through the auxiliary circuit electronic expansion valve, becomes a medium-pressure gas-liquid mixture, and then reaches the economizer. The refrigerant in the auxiliary circuit pipeline exchanges heat with the refrigerant liquid with higher temperature in the main circuit pipeline in the economizer, the refrigerant liquid in the auxiliary circuit pipeline absorbs heat to become gas, the gas is fed into the working cavity of the compressor through the third refrigerant interface 3 of the compressor, and the gas is discharged from the first refrigerant interface 1 after being compressed by the compressor. At the same time, through heat exchange in the economizer, the refrigerant in the main circuit line is supercooled, and the part of supercooled refrigerant in the main circuit line passes through the main circuit electronic expansion valve and then enters the wind side heat exchanger, so that heat is absorbed from the wind side heat exchanger and returned to the compressor.
The refrigerant in the main circuit pipeline, which returns to the compressor from the second refrigerant interface 2, is mixed with the refrigerant in the auxiliary circuit pipeline, which returns to the compressor from the third refrigerant interface 3, in the working cavity of the compressor, and then the two parts of the refrigerants are mixed while being compressed along with the rotation of the working cavity until the mixing process is finished, and the mixed refrigerant is discharged out of the compressor through the first refrigerant interface 1 after being further compressed by the compressor. Thus, a complete closed cycle is formed.
In this embodiment, the main circuit is used as a refrigeration circuit, and the auxiliary circuit is used as a jet circuit. Specifically, the compressor adopts a two-stage throttling middle air injection technology for compression, namely, air injection mixed cooling is performed while compression is performed at medium and low pressure, then normal compression is performed at high pressure, the exhaust capacity of the compressor is improved, gas-liquid separation is performed through the economizer, an auxiliary loop pipeline and the economizer are arranged, heat exchange is performed between the refrigerant in the auxiliary loop pipeline and the refrigerant in the main loop pipeline, the enthalpy increasing effect can be achieved, and the aim of improving the heating capacity in a low-temperature environment is fulfilled.
In this embodiment, the control module controls the start and stop of the compressor according to factors such as heating requirements, for example, the control module starts the compressor when heating is required, stops the compressor after one round of heating is completed, and starts the compressor again when a new round of heating is performed.
In this embodiment, the control module controls the auxiliary circuit to be started in advance when the compressor is started.
Specifically, the auxiliary circuit line is started in advance when the compressor is started, which may mean that the auxiliary circuit line is started in advance when the compressor is started, and the auxiliary circuit line is started, which means that the auxiliary electronic expansion valve is started.
In this embodiment, if the auxiliary circuit line is also started within a short period of time before each start of the compressor, the predicted start time may be obtained by predicting the start time of the compressor, and the auxiliary circuit line is controlled to be opened within the first period of time before the predicted start time.
Specifically, the starting time of the compressor is the time which is simultaneously satisfied by a first time period, a second time period and a third time period, wherein the first time period is the water flow detection time, the second time period is the fan starting delay, and the third time period is the shortest stopping time of the compressor, so that the starting time of the compressor is predicted to comprise the water flow detection time, the fan starting delay and the shortest stopping time of the compressor.
In this embodiment, whether the control auxiliary circuit line is kept started at the same time as the compressor or is kept started slightly earlier than the compressor, an initial opening degree may be set, and the opening degree of the control auxiliary circuit electronic expansion valve may be set to this initial opening degree immediately after the control auxiliary circuit line is started. After the auxiliary circuit pipeline is opened, the control module can control the opening degree of the auxiliary circuit electronic expansion valve through a PID control algorithm.
In this embodiment, under different ambient temperatures and water outlet temperatures, the initial opening of the control auxiliary electronic expansion valve may be different, i.e., the control module may set the initial opening according to the ambient temperature and the water outlet temperature. The control module can measure the ambient temperature through the fin temperature probe in fig. 1, and the water outlet temperature through the water outlet temperature probe. Then, the corresponding initial opening degree can be obtained through inquiring the corresponding relation among the environment temperature, the water outlet temperature and the initial opening degree shown in the table 2, and then the opening degree of the auxiliary electronic expansion valve is controlled to reach the initial opening degree.
TABLE 2
In this embodiment, by opening the auxiliary circuit line, the auxiliary temperature discharge control can be performed on the compressor by adjusting the refrigerant flow of the auxiliary circuit line on the basis of the main circuit line, thereby avoiding the compressor from having an excessively high temperature. And under extreme working conditions, when the compressor is started, the temperature is discharged and the temperature is risen. At this time, the auxiliary circuit pipeline can be started in advance before the compressor is started, so that the compressor is ensured to be in front of the abrupt rise of the exhaust temperature. The function of the auxiliary circuit for reducing the exhaust temperature is exerted earlier. Thereby making the rising trend of the exhaust temperature smoother. And the condition that the alarm is stopped due to the overtemperature discharge protection caused by the surge of the discharge temperature is avoided when the compressor is started. Because the air source heat pump system in this embodiment has a good exhaust temperature control effect, even if the ambient temperature is too low, for example, the exhaust temperature of the compressor is not easily too high when the ambient temperature is lower than 0 ℃, thereby ensuring good operation of the compressor.
In this embodiment, the control module may divide the initial opening interval control module of the auxiliary circuit pipeline according to the first temperature threshold and the second temperature threshold, and detect the relationship between the ambient temperature and the first temperature threshold and the relationship between the outlet temperature and the second temperature threshold, so as to obtain the initial opening of the auxiliary circuit pipeline set by which is applicable under the current working condition; when the detected ring temperature is larger or smaller than the maximum or minimum value of the first threshold value, taking the maximum or minimum value of the first threshold value; and when the water outlet Wen Dida is detected to be at or below the maximum or minimum value of the second threshold, taking the maximum or minimum value of the second threshold.
In this example, the control module determines whether to open and close the auxiliary circuit according to the third temperature threshold and the fourth temperature threshold. When the control module detects that the ambient temperature is higher than the third temperature threshold, the control module may not control the auxiliary circuit line to be started before the compressor is started, for example, the control module may control the auxiliary circuit line to be started after the compressor is started for a period of time. Because the conditions of low ambient temperature and high outlet water temperature do not exist, the possibility of overheat of the compressor is low under the condition that the technology of opening the auxiliary circuit pipeline in advance in the embodiment is not applied, so that the compressor is not easy to damage due to overheat, and the auxiliary circuit pipeline is controlled to be started after the compressor is started for a period of time. When the control module detects that the exhaust temperature is lower than the fourth temperature threshold value under the condition that the auxiliary circuit pipeline is opened, the auxiliary circuit pipeline can be closed. The working time of the auxiliary loop pipeline can be reduced, the input power is reduced, and energy sources are saved.
The same technical effects as those of the air source heat pump system in the embodiment can be achieved by writing a computer program for executing the control method of the air source heat pump system in the embodiment, writing the computer program into a computer device or a storage medium, and executing the control method of the air source heat pump system in the embodiment when the computer program is read out to run.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly or indirectly fixed or connected to the other feature. Further, the descriptions of the upper, lower, left, right, etc. used in this disclosure are merely with respect to the mutual positional relationship of the various components of this disclosure in the drawings. As used in this disclosure, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. In addition, unless defined otherwise, all technical and scientific terms used in this example have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description of the embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used in this embodiment includes any combination of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element of the same type from another. For example, a first element could also be termed a second element, and, similarly, a second element could also be termed a first element, without departing from the scope of the present disclosure. The use of any and all examples, or exemplary language (e.g., "such as") provided herein, is intended merely to better illuminate embodiments of the invention and does not pose a limitation on the scope of the invention unless otherwise claimed.
It should be appreciated that embodiments of the invention may be implemented or realized by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer readable memory. The methods may be implemented in a computer program using standard programming techniques, including a non-transitory computer readable storage medium configured with a computer program, where the storage medium so configured causes a computer to operate in a specific and predefined manner, in accordance with the methods and drawings described in the specific embodiments. Each program may be implemented in a high level procedural or object oriented programming language to communicate with a computer system. However, the program(s) can be implemented in assembly or machine language, if desired. In any case, the language may be a compiled or interpreted language. Furthermore, the program can be run on a programmed application specific integrated circuit for this purpose.
Furthermore, the operations of the processes described in the present embodiments may be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes (or variations and/or combinations thereof) described in this embodiment may be performed under control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications), by hardware, or combinations thereof, that collectively execute on one or more processors. The computer program includes a plurality of instructions executable by one or more processors.
Further, the method may be implemented in any type of computing platform operatively connected to a suitable computing platform, including, but not limited to, a personal computer, mini-computer, mainframe, workstation, network or distributed computing environment, separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, and so forth. Aspects of the invention may be implemented in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optical read and/or write storage medium, RAM, ROM, etc., such that it is readable by a programmable computer, which when read by a computer, is operable to configure and operate the computer to perform the processes described herein. Further, the machine readable code, or portions thereof, may be transmitted over a wired or wireless network. When such media includes instructions or programs that, in conjunction with a microprocessor or other data processor, implement the steps described above, the invention described in this embodiment includes these and other different types of non-transitory computer-readable storage media. The invention also includes the computer itself when programmed according to the methods and techniques of the present invention.
The computer program can be applied to the input data to perform the functions described in this embodiment, thereby converting the input data to generate output data that is stored to the non-volatile memory. The output information may also be applied to one or more output devices such as a display. In a preferred embodiment of the invention, the transformed data represents physical and tangible objects, including specific visual depictions of physical and tangible objects produced on a display.
The present invention is not limited to the above embodiments, but can be modified, equivalent, improved, etc. by the same means to achieve the technical effects of the present invention, which are included in the spirit and principle of the present invention. Various modifications and variations are possible in the technical solution and/or in the embodiments within the scope of the invention.
Claims (9)
1. An air source heat pump system, characterized in that the air source heat pump system comprises:
a compressor; the compressor comprises a first refrigerant interface, a second refrigerant interface and a third refrigerant interface; the refrigerant flow directions of the first refrigerant interface and the second refrigerant interface are opposite, and the refrigerant flow directions of the second refrigerant interface and the third refrigerant interface are the same;
a main circuit line; one end of the main loop pipeline is connected with the first refrigerant interface, and the other end of the main loop pipeline is connected with the second refrigerant interface;
an auxiliary circuit line; one end of the auxiliary circuit pipeline is communicated with one part in the middle of the main circuit pipeline, and the other end of the auxiliary circuit pipeline is connected with the third refrigerant interface;
an economizer; the main loop pipeline exchanges heat with the auxiliary loop pipeline through the economizer;
a control module; the control module is used for controlling the auxiliary loop pipeline to be opened before the compressor is started;
the controlling the auxiliary circuit line to be opened before the compressor is started comprises:
acquiring an ambient temperature and a water outlet temperature;
and when the ambient temperature is lower than a first temperature threshold and the outlet water temperature is higher than a second temperature threshold, controlling the auxiliary circuit pipeline to be started before the compressor is started, otherwise, controlling the auxiliary circuit pipeline to be started after the compressor is started for a period of time.
2. An air source heat pump system according to claim 1, wherein said controlling said auxiliary circuit line to open prior to start-up of said compressor comprises:
before the compressor is started, the auxiliary circuit pipeline is controlled to be opened at an initial opening degree.
3. An air source heat pump system according to claim 1, wherein said controlling said auxiliary circuit line to open prior to start-up of said compressor comprises:
predicting the starting time of the compressor to obtain predicted starting time;
and controlling the auxiliary circuit pipeline to be opened at an initial opening degree in a first time period before the predicted starting time.
4. An air source heat pump system according to claim 3, wherein said predicting a start-up time of said compressor to obtain a predicted start-up time comprises:
the water flow detection time is a first period;
the start delay of the fan is a second period;
the shortest compressor downtime is a third period;
the starting time of the compressor is the time which is simultaneously met by the first period, the second period and the third period.
5. An air source heat pump system according to claim 3, wherein said predicting a start-up time of said compressor to obtain a predicted start-up time comprises:
recording a plurality of actual start-up times of the compressor;
establishing a prediction model according to the actual starting times;
and determining the predicted starting time according to the prediction model.
6. An air source heat pump system according to any of claims 2-5, wherein the control module is further configured to:
acquiring an ambient temperature and a water outlet temperature;
and determining the initial opening according to the ambient temperature and the outlet water temperature.
7. A control method of an air source heat pump system is characterized in that:
the air source heat pump system includes:
a compressor; the compressor comprises a first refrigerant interface, a second refrigerant interface and a third refrigerant interface; in the same working mode of the compressor, the refrigerant flow directions of the first refrigerant interface and the second refrigerant interface are opposite, and the refrigerant flow directions of the second refrigerant interface and the third refrigerant interface are the same;
a main circuit line; one end of the main loop pipeline is connected with the first refrigerant interface, and the other end of the main loop pipeline is connected with the second refrigerant interface;
an auxiliary circuit line; one end of the auxiliary circuit pipeline is communicated with one part in the middle of the main circuit pipeline, and the other end of the auxiliary circuit pipeline is connected with the third refrigerant interface;
an economizer; the main loop pipeline exchanges heat with the auxiliary loop pipeline through the economizer;
the control method comprises the following steps:
controlling the auxiliary circuit pipeline to be opened before the compressor is started;
the controlling the auxiliary circuit line to be opened before the compressor is started comprises:
acquiring an ambient temperature and a water outlet temperature;
and when the ambient temperature is lower than a first temperature threshold and the outlet water temperature is higher than a second temperature threshold, controlling the auxiliary circuit pipeline to be started before the compressor is started, otherwise, controlling the auxiliary circuit pipeline to be started after the compressor is started for a period of time.
8. A computer apparatus comprising a memory for storing at least one program and a processor for loading the at least one program to perform the control method of the air source heat pump system of claim 7.
9. A storage medium having stored therein a processor-executable program, wherein the processor-executable program, when executed by a processor, is for performing the control method of the air source heat pump system of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111550750.2A CN114322369B (en) | 2021-12-17 | 2021-12-17 | Air source heat pump system, control method, computer device, and storage medium |
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| US8533975B2 (en) * | 2010-10-29 | 2013-09-17 | General Electric Company | Apparatus and method for refrigeration cycle elevation by modification of cycle start condition |
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| JPH11118266A (en) * | 1997-10-21 | 1999-04-30 | Daikin Ind Ltd | Refrigerant circuit |
| CN106871486A (en) * | 2017-04-24 | 2017-06-20 | 大连中星科技开发有限公司 | Control method for electronic expansion valve and air source heat pump system |
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