CN114963516A - Air source heat pump control method and device, electronic equipment and storage medium - Google Patents

Air source heat pump control method and device, electronic equipment and storage medium Download PDF

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Publication number
CN114963516A
CN114963516A CN202110998009.6A CN202110998009A CN114963516A CN 114963516 A CN114963516 A CN 114963516A CN 202110998009 A CN202110998009 A CN 202110998009A CN 114963516 A CN114963516 A CN 114963516A
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CN
China
Prior art keywords
heating unit
electric heating
heat pump
flow
water
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Pending
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CN202110998009.6A
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Chinese (zh)
Inventor
梁杰
管江勇
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Haier Smart Home Co Ltd
Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
Qingdao Haier New Energy Electric Appliance Co Ltd
Original Assignee
Haier Smart Home Co Ltd
Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
Qingdao Haier New Energy Electric Appliance Co Ltd
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Application filed by Haier Smart Home Co Ltd, Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd, Qingdao Haier New Energy Electric Appliance Co Ltd filed Critical Haier Smart Home Co Ltd
Priority to CN202110998009.6A priority Critical patent/CN114963516A/en
Publication of CN114963516A publication Critical patent/CN114963516A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18Water-storage heaters
    • F24H1/20Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
    • F24H1/201Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
    • F24H1/202Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply with resistances
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00Fluid heaters characterised by the use of heat pumps
    • F24H4/02Water heaters
    • F24H4/04Storage heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/0005Details for water heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/18Arrangement or mounting of grates or heating means
    • F24H9/1809Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818Arrangement or mounting of electric heating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices
    • F24H9/2007Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2021Storage heaters
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12Hot water central heating systems using heat pumps

Abstract

The invention belongs to the technical field of intelligent household appliances, and particularly relates to an air source heat pump control method and device, electronic equipment and a storage medium. The invention aims to solve the problem that the starting time of the existing air source heat pump with multiple heating units is not accurate. The method comprises the steps of acquiring configuration information, wherein the configuration information comprises the starting time interval of a first electric heating unit and the starting time interval of a second electric heating unit; if the current system time is in the starting time period of the first electric heating unit, acquiring flow information of the air source heat pump, wherein the flow information is used for representing the output water quantity of the air source heat pump within a preset time length; and starting the first electric heating unit and/or starting the first electric heating unit and the second electric heating unit according to the flow information, the starting time period of the first electric heating unit and the starting time period of the second electric heating unit. Through the opportunity that sets up first electric heating unit and second electric heating unit, avoided heating unit's the inaccurate problem of opportunity of opening, reduce the electric energy waste.

Description

Air source heat pump control method and device, electronic equipment and storage medium
Technical Field
The invention belongs to the technical field of intelligent household appliances, and particularly relates to an air source heat pump control method and device, electronic equipment and a storage medium.
Background
The air source heat pump is an electronic device which utilizes heat in air to generate heat energy and realizes water temperature heating, and compared with a traditional electric water heater, the air source heat pump is higher in heat efficiency and more energy-saving. In the prior art, in order to further increase the outlet water temperature of the air source heat pump, additional electric heating units are arranged at different positions in the liner of the air source heat pump, for example, the electric heating units are arranged at positions close to the water outlet, and the electric heating units are arranged at the middle lower part of the liner.
However, the electric heating units arranged at different positions have different functions, and in the prior art, the electric heating units can only be started through manual operation of users for starting different heating units, so that the problems of complex operation process and inaccurate heating time of the heating units are caused, and the problems of electric energy waste, influence on the comfort degree of water for the users and the like are caused.
Accordingly, there is a need in the art for a new air source heat pump control method, apparatus, electronic device, and storage medium to address the above-mentioned problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the starting time of the electric heating unit in the existing air source heat pump with multiple electric heating units is not accurate, the invention provides an air source heat pump control method, an air source heat pump control device, electronic equipment and a storage medium.
According to a first aspect of embodiments of the present invention, the present invention provides an air source heat pump control method, applied to an air source heat pump, the air source heat pump including a first electric heating unit and a second electric heating unit, including:
acquiring configuration information, wherein the configuration information comprises the starting time interval of the first electric heating unit and the starting time interval of the second electric heating unit; if the current system time is in the starting time period of the first electric heating unit, acquiring flow information of the air source heat pump, wherein the flow information is used for representing the output water quantity of the air source heat pump within a preset time length; and starting the first electric heating unit and/or starting the first electric heating unit and the second electric heating unit according to the flow information, the starting time period of the first electric heating unit and the starting time period of the second electric heating unit.
In a preferred embodiment of the air source heat pump control method, the configuration information further includes a first flow rate section corresponding to the first electric heating unit and a second flow rate section corresponding to the second electric heating unit; the flow information comprises outlet water flow, and the outlet water flow represents the output water quantity of the heat pump water heater in unit time; turning on the first electric heating unit and/or turning on the first electric heating unit and the second electric heating unit according to the flow rate information, the turn-on period of the first electric heating unit, and the turn-on period of the second electric heating unit, including: when the system time is in the starting time period of the first electric heating unit and is not in the starting time period of the second electric heating unit, only starting the first electric heating unit; when the system time is in the starting time period of the second electric heating unit, if the effluent flow is in the first flow interval, only starting the first electric heating unit; and if the water outlet flow is positioned in the second flow interval, starting the first electric heating unit and/or the second electric heating unit.
In a preferred embodiment of the air source heat pump control method, the configuration information further includes a first time threshold corresponding to the first electrical heating unit and a second time threshold corresponding to the second electrical heating unit; the flow information further comprises water outlet duration, and the water outlet duration represents the duration of hot water output by the heat pump water heater; if the effluent flow is located in the first flow interval, only starting the first electric heating unit, including: and if the water outlet flow is positioned in the first flow interval and the water outlet duration is less than the first time threshold, starting the first electric heating unit.
In a preferred embodiment of the above air source heat pump control method, the method further includes: and if the water outlet flow is positioned in the first flow interval and the water outlet time length is greater than the first time length threshold value, starting the first electric heating unit and/or the second electric heating unit.
In a preferred embodiment of the air source heat pump control method, the configuration information further includes a first time threshold corresponding to the first electrical heating unit and a second time threshold corresponding to the second electrical heating unit; the flow information further comprises water outlet duration, and the water outlet duration represents the duration of hot water output by the heat pump water heater; if the water outlet flow is located in the second flow interval, the first electric heating unit and/or the second electric heating unit are/is started, and the method comprises the following steps: and if the water outlet flow is positioned in the second flow interval and the water outlet time length is greater than the second time length threshold value, starting the first electric heating unit and/or the second electric heating unit.
In a preferred embodiment of the above air source heat pump control method, the method further includes: if the water outlet flow is located in the second flow interval and the water outlet duration is smaller than the second duration threshold, the first electric heating unit is closed and the second electric heating unit is opened.
In a preferred embodiment of the above air source heat pump control method, the method further includes: acquiring the outlet water temperature of the air source heat pump; determining the temperature change trend of the outlet water temperature according to the outlet water temperature, wherein the temperature change trend comprises a temperature rising trend and a temperature falling trend; when only the first electric heating unit is started, if the temperature change trend of the outlet water temperature is the temperature decrease trend, the first electric heating unit and the second electric heating unit are started simultaneously.
In a preferred embodiment of the air source heat pump control method, the configuration information includes a plurality of sub-on periods corresponding to the first electric heating unit and a plurality of sub-on periods corresponding to the second electric heating unit; each sub-starting time interval corresponding to the second electric heating unit corresponds to a first flow interval respectively; and each sub-starting time interval corresponding to the second electric heating unit corresponds to a second flow interval respectively.
According to a second aspect of the embodiments of the present invention, the present invention provides an air source heat pump control device applied to an air source heat pump, the air source heat pump including a first electric heating unit and a second electric heating unit, the air source heat pump control device including:
a configuration module, configured to obtain configuration information, where the configuration information includes an on-period of the first electric heating unit and an on-period of the second electric heating unit;
the acquisition module is used for acquiring flow information of the air source heat pump if the current system time is in the starting period of the first electric heating unit, wherein the flow information is used for representing the output water volume of the air source heat pump within a preset time length;
and the control module is used for starting the first electric heating unit and/or starting the first electric heating unit and the second electric heating unit according to the flow information, the starting time interval of the first electric heating unit and the starting time interval of the second electric heating unit.
In a preferred embodiment of the air source heat pump control apparatus, the configuration information further includes a first flow rate section corresponding to the first electric heating unit and a second flow rate section corresponding to the second electric heating unit; the flow information comprises outlet water flow, and the outlet water flow represents the output water quantity of the heat pump water heater in unit time; the control module is specifically configured to: when the system time is in the starting time period of the first electric heating unit and is not in the starting time period of the second electric heating unit, only starting the first electric heating unit; when the system time is in the starting time period of the second electric heating unit, if the effluent flow is in the first flow interval, only starting the first electric heating unit; and if the water outlet flow is positioned in the second flow interval, starting the first electric heating unit and/or the second electric heating unit.
In a preferred embodiment of the air source heat pump control apparatus, the configuration information further includes a first duration threshold corresponding to the first electrical heating unit, and a second duration threshold corresponding to the second electrical heating unit; the flow information further comprises water outlet duration, and the water outlet duration represents the duration of hot water output by the heat pump water heater; the control module is specifically configured to, when only the first electrical heating unit is turned on if it is determined that the effluent flow rate is within the first flow rate interval: and if the water outlet flow is positioned in the first flow interval and the water outlet duration is less than the first time threshold, starting the first electric heating unit.
In a preferred embodiment of the above air source heat pump control device, the control module is further configured to: and if the water outlet flow is positioned in the first flow interval and the water outlet time length is greater than the first time length threshold value, starting the first electric heating unit and/or the second electric heating unit.
In a preferred technical solution of the above air source heat pump control apparatus, the configuration information further includes a first time threshold corresponding to the first electrical heating unit, and a second time threshold corresponding to the second electrical heating unit; the flow information further comprises water outlet duration, and the water outlet duration represents the duration of hot water output by the heat pump water heater; the control module is specifically configured to, when the control module determines that the water outlet flow rate is within the second flow rate interval and the first electrical heating unit and/or the second electrical heating unit are/is turned on: and if the water outlet flow is positioned in the second flow interval and the water outlet time length is greater than the second time length threshold value, starting the first electric heating unit and/or the second electric heating unit.
In a preferred embodiment of the above air source heat pump control device, the control module is further configured to: if the water outlet flow is located in the second flow interval and the water outlet duration is smaller than the second duration threshold, the first electric heating unit is closed and the second electric heating unit is opened.
In a preferred embodiment of the above air source heat pump control device, the control module is further configured to: acquiring the outlet water temperature of the air source heat pump; determining the temperature change trend of the outlet water temperature according to the outlet water temperature, wherein the temperature change trend comprises a temperature rising trend and a temperature falling trend; when only the first electric heating unit is started, if the temperature change trend of the outlet water temperature is the temperature decrease trend, the first electric heating unit and the second electric heating unit are started simultaneously.
In a preferred embodiment of the air source heat pump control apparatus, the configuration information includes a plurality of sub-on periods corresponding to the first electric heating unit and a plurality of sub-on periods corresponding to the second electric heating unit; each sub-starting time interval corresponding to the second electric heating unit corresponds to a first flow interval respectively; and each sub-starting time interval corresponding to the second electric heating unit corresponds to a second flow interval respectively.
According to a third aspect of embodiments of the present invention, there is provided an electronic apparatus including: a memory, a processor, and a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to perform the air source heat pump control method according to any one of the first aspect of the embodiments of the invention.
According to a fourth aspect of embodiments of the present invention, there is provided a computer-readable storage medium having stored therein computer-executable instructions for implementing the air source heat pump control method according to any one of the first aspect of embodiments of the present invention when executed by a processor.
According to a fifth aspect of embodiments of the present invention there is provided a computer program product comprising a computer program for execution by a processor of a method of air source heat pump control according to any one of the first aspect of embodiments of the present invention.
As can be understood by those skilled in the art, the air source heat pump control method, apparatus, electronic device and storage medium of the present invention are implemented by obtaining configuration information, wherein the configuration information includes an on period of the first electric heating unit and an on period of the second electric heating unit; if the current system time is in the starting time period of the first electric heating unit, acquiring flow information of the air source heat pump, wherein the flow information is used for representing the output water quantity of the air source heat pump within a preset time length; and starting the first electric heating unit and/or starting the first electric heating unit and the second electric heating unit according to the flow information, the starting time period of the first electric heating unit and the starting time period of the second electric heating unit. Set up the opportunity of first electric heating unit and second electric heating unit through configuration information, avoided the manual first electric heating unit that leads to of opening of user and second electric heating unit, the inaccurate problem in the opportunity of opening of second electric heating unit, reduced the electric energy waste, improved user's water comfort level.
Drawings
The preferred embodiments of the air source heat pump control method, apparatus, and electronic device of the present invention are described below with reference to the accompanying drawings. The attached drawings are as follows:
fig. 1 is a schematic structural diagram of an air source heat pump according to an embodiment of the present invention;
FIG. 2 is a flow chart of an air-source heat pump control method according to an embodiment of the invention;
fig. 3 is a schematic diagram of sequentially turning on a first electric heating unit and a second electric heating unit according to an embodiment of the present invention;
FIG. 4 is a flow chart of an air-source heat pump control method according to another embodiment of the invention;
fig. 5 is a schematic structural diagram of an air source heat pump control device according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms to which the present invention relates will be explained first:
1) the intelligent household appliance equipment is a household appliance product formed by introducing a microprocessor, a sensor technology and a network communication technology into the household appliance equipment, has the characteristics of intelligent control, intelligent perception and intelligent application, and the operation process of the intelligent household appliance equipment usually depends on the application and processing of modern technologies such as the Internet of things, the Internet and an electronic chip, for example, the intelligent household appliance equipment can realize the remote control and management of a user on the intelligent household appliance equipment by connecting the intelligent household appliance equipment with the electronic equipment.
2) Terminal equipment indicates the electronic equipment who has wireless connection function, and terminal equipment can carry out communication connection through connecting the internet with intelligent household electrical appliances as above, also can directly carry out communication connection through modes such as bluetooth, wifi with intelligent household electrical appliances as above. In some embodiments, the terminal device is, for example, a mobile device, a computer, or a vehicle-mounted device built in a floating car, or any combination thereof. The mobile device may include, for example, a cell phone, a smart home device, a wearable device, a smart mobile device, a virtual reality device, or the like, or any combination thereof, wherein the wearable device includes, for example: smart watches, smart bracelets, pedometers, and the like.
3) "plurality" means two or more, and the other terms are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
4) "correspond" may refer to an association or binding relationship, and a corresponds to B refers to an association or binding relationship between a and B.
The following explains an application scenario of the embodiment of the present invention:
the air source heat pump control method provided by the embodiment of the invention can be applied to an air source heat pump water heater (hereinafter referred to as an air source heat pump) with a plurality of electric heating units, and fig. 1 is a schematic structural diagram of the air source heat pump provided by the embodiment of the invention. The inner container includes a first electric heating unit 13, a second electric heating unit 14 and a heat exchange plate (not shown in the figure), the first electric heating unit 13 is disposed near the lower portion of the inner container 1, and the second electric heating unit 14 is disposed near the inner container water outlet of the water outlet pipe 11 on the upper portion of the inner container. Because the high-temperature hot water in the inner container 1 flows to the upper part of the inner container 1 and the low-temperature hot water flows to the lower part of the inner container 1, when the first electric heating unit 13 is started, the water in the inner container 1 starts to be circularly heated from the lower part, so that the water temperature in the inner container 1 is uniformly increased; and after the second electric heating unit 14 is started, heat energy can be intensively released in water at the upper part of the liner 1, so that the water temperature at the upper part of the liner 1 can be preferentially and quickly increased, and the function of quickly outputting hot water by the air source heat pump under the condition that the stored water in the liner is not required to be completely heated is realized.
The thermal efficiency of the air source heat pump is related to the temperature rise, when the air source heat pump is used for carrying out temperature rise, the thermal efficiency of the air source heat pump is gradually reduced along with the increase of the temperature rise, and the water temperature can not be even further increased after the temperature rise reaches a certain amount. In an application scenario of using the air source heat pump as a water heater, a user has a higher water temperature requirement, for example, in a specific requirement scenario that the user needs to store water in a bathtub for bathing or take a foot bath, the user needs to use a higher water temperature, and in some cold regions, the user cannot heat the water to the temperature by only using the air source heat pump. Therefore, in order to further increase the outlet water temperature of the air source heat pump and improve the heating efficiency in different water usage scenarios, in the prior art, additional electric heating units are disposed at different positions in the liner of the air source heat pump, for example, the electric heating unit disposed at the upper portion of the liner in the embodiment shown in fig. 1, and the electric heating unit disposed at the lower portion of the liner, so as to meet different water usage requirements of users.
However, in the actual use process, the different electric heating units are usually started through manual operations of users, for example, the air source heat pump is provided with functions of "auxiliary heating", "rapid heating", and the like, and the users need to start corresponding functions to start the corresponding electric heating units, which leads to a problem of complicated operation, and under the condition that the users set unreasonable and forget to start, the water temperature cannot meet the water demand of the users. In other related technologies, the electric heating units can be controlled to be started by detecting the water temperature in the inner container of the air source heat pump and the set target outlet water temperature, but the electric heating units positioned at the lower part of the inner container or the electric heating units positioned at the upper part of the inner container are usually controlled independently, and different characteristics and effects of the plurality of electric heating units are not fully utilized, so that the starting time of each electric heating unit is unreasonable, the heating efficiency of the water temperature in the inner container is influenced, the electric energy is wasted, and the user experience is influenced.
In the embodiment of the invention, the plurality of electric heating units are jointly controlled at a certain time sequence, the electric heating unit positioned at the upper part of the inner container is controlled, and different characteristics and effects of the plurality of electric heating units are fully utilized, so that the starting time of the jointly controlled electric heating units is matched with the water using habit of a user, the heating efficiency is improved, and the electric energy waste is reduced.
The following describes the technical solution of the present invention and how to solve the above technical problems with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 2 is a flowchart of a control method of an air-source heat pump according to an embodiment of the present invention, which is applied to an air-source heat pump, where the air-source heat pump includes a first electrical heating unit and a second electrical heating unit, as shown in fig. 2, the control method of the air-source heat pump according to the embodiment includes the following steps:
step S101, obtaining configuration information, wherein the configuration information comprises the starting time interval of the first electric heating unit and the starting time interval of the second electric heating unit.
The air source heat pump is an intelligent household appliance, and the configuration information may be information sent by a user through a terminal device bound with the air source heat pump, and more specifically, for example, the user sets a time period during which hot water may be used, that is, an on time period of the first heating unit, for example, 7:00 in the morning-23: 00 in the evening through an Application (APP) running on the terminal device; and a period in which hot water of high temperature may be used, i.e., an on period of the second heating unit, for example, 20:00-22:00 at night. The terminal equipment communicates with the server and sends the configuration information to the air source heat pump through the server, so that the air source heat pump obtains the configuration information.
In an exemplary air source heat pump shown in fig. 1, the first heating unit is a heating unit located at a lower portion of the inner container, and the second electric heating unit is a heating unit located at an upper portion of the inner container. The first electric heating unit is used for uniformly improving the water temperature in the inner container, the second heating unit is used for rapidly improving the water temperature at the upper part of the inner container, and the air source heat pump rapidly outputs hot water in a local heating mode in the inner container.
Step S102, if the current system time is in the starting time period of the first electric heating unit, flow information of the air source heat pump is obtained, and the flow information is used for representing the output water quantity of the air source heat pump within a preset time period.
For example, after the air source content obtains configuration information, a starting time period of the first electric heating unit and a starting time period of the second electric heating unit can be determined according to the configuration information, according to the current system time, when the starting time period of the first electric heating unit is reached, in order to further determine the water demand of a user, the water outlet quantity of the water outlet is collected through a flow sensor arranged at the water outlet of the air source heat pump, when the user has water consumption behavior, the air source heat pump outputs hot water, and therefore flow information representing the water output quantity of the air source heat pump in a preset time length is obtained. The flow information may include, for example, a water outlet duration and a water outlet flow; the water outlet flow rate represents flow data collected by the sensor, and the water outlet duration represents the duration of flow collected by the flow sensor. Through the flow information of the air source heat pump, the water demand of a user can be further judged in the subsequent steps, so that the starting of the first electric heating unit and the second electric heating unit is accurately controlled.
Step S103, according to the flow information, the starting time interval of the first electric heating unit and the starting time interval of the second electric heating unit, the first electric heating unit is started, and/or the first electric heating unit and the second electric heating unit are started.
Illustratively, the hot water in the inner container reaches a first temperature, for example, 30 degrees after being heated by the heat exchange fins communicated with the heat pump, and at this time, the heat pump does not heat the water temperature in the inner container any more due to the limitation of the environmental temperature or the power consumption. After the starting time period of the first electric heating unit is reached, the air source heat pump starts the first electric heating unit to uniformly heat the water temperature in the liner, so that the water temperature is uniformly increased to a second temperature, for example, 40 ℃. The first temperature is the temperature reached after the water temperature is heated by the heat pump based on the Carnot cycle, the thermal efficiency of the air source heat pump is high in the process, the water temperature is heated to a high level with low energy consumption, but the water temperature cannot meet the water demand of a user (for example, when the user takes a bath with the first water temperature, the water temperature is low after certain cold water is mixed, and if the cold water is not mixed, the water amount is small).
When reaching the opening period of first electrical heating unit, through opening first electrical heating unit, can further heat the temperature in the inner bag, make the temperature reach the second temperature, the temperature at this moment can satisfy the general water demand of user, for example bathe, wash face etc.. The process of heating the water temperature from the first temperature to the second temperature is achieved through the first electric heating unit, the heat efficiency of the process is lower than that of the process of heating the water temperature to the first temperature through the heat pump, therefore, the first heating unit is controlled to be started only in the corresponding starting time interval through configuration information, the user requirements of users are matched, and electric energy waste caused by long-time starting is avoided. On the basis of the second temperature, the water temperature is further heated through the second electric heating unit, and the requirement of a user for higher-temperature water (for example, 50 degrees, used for bathing in a bathtub, or used for foot bath and the like) is met. In this process, by activating the second electrical heating unit, a higher energy consumption is caused, and therefore a more accurate matching of the user's needs is required. Specifically, after the current system time reaches the start time period of the second heating unit, whether a user needs to output hot water with a higher temperature is judged through flow information, wherein the flow information corresponds to the water using equipment, for example, the flow information is the water outlet flow; the water outlet flow corresponding to the opening of a kitchen faucet is A, and the water outlet flow corresponding to the opening of a bathroom faucet for discharging water to a bathtub is B, wherein B is larger than A. Through the water outlet flow, the water consumption equipment used by the user can be judged, the water consumption requirement of the user is further judged, and therefore whether the second electric heating unit is started or not is judged. The mapping relationship between the water utilization equipment and the water outlet flow can be determined by historical water utilization data of the user, and is not described herein again.
The configuration information further includes a first flow interval corresponding to the first electric heating unit and a second flow interval corresponding to the second electric heating unit, and the flow information includes a water outlet flow, which represents the output water volume of the heat pump water heater in a unit time length. Fig. 3 is a schematic diagram of sequentially turning on a first electric heating unit and a second electric heating unit according to an embodiment of the present invention, and referring to fig. 3, a specific manner of turning on the first electric heating unit and/or turning on the first electric heating unit and the second electric heating unit according to flow information, a turn-on period of the first electric heating unit, and a turn-on period of the second electric heating unit includes:
and judging whether the current system time is in the starting time period of the first electric heating unit (shown as the period A in the figure, the same below) or the starting time period of the second electric heating unit (shown as the period B in the figure, the same below, wherein the period B is in the period A) according to the current system time.
When the current system time is in the starting time period of the first electric heating unit and is not in the starting time period of the second electric heating unit, only the first electric heating unit is started.
When the system time is in the starting time period of the second electric heating unit, judging the effluent flow according to a preset flow interval, and if the effluent flow is in a first flow interval (shown as an a interval in the figure, the same applies below), only starting the first electric heating unit; and if the outlet water flow is positioned in a second flow interval (shown as an interval b in the figure, the same applies below), starting the first electric heating unit and/or the second electric heating unit.
In this embodiment, by acquiring configuration information, the configuration information includes an on period of the first electric heating unit and an on period of the second electric heating unit; if the current system time is in the starting time period of the first electric heating unit, acquiring flow information of the air source heat pump, wherein the flow information is used for representing the output water quantity of the air source heat pump within a preset time length; and starting the first electric heating unit and/or starting the first electric heating unit and the second electric heating unit according to the flow information, the starting time period of the first electric heating unit and the starting time period of the second electric heating unit. Set up the opportunity of first electric heating unit and second electric heating unit through configuration information, avoided the manual first electric heating unit that leads to of opening of user and second electric heating unit, the inaccurate problem in the opportunity of opening of second electric heating unit, reduced the electric energy waste, improved user's water comfort level.
Fig. 4 is a flowchart of an air source heat pump control method according to another embodiment of the present invention, and as shown in fig. 4, the air source heat pump control method according to this embodiment further details step S103 on the basis of the air source heat pump control method according to the embodiment shown in fig. 2, and then the air source heat pump control method according to this embodiment includes the following steps:
step S201, configuration information is acquired.
Illustratively, the configuration information includes an on period, a first flow interval and a first time threshold corresponding to the first electric heating unit, and an on period, a second flow interval and a second time threshold corresponding to the second electric heating unit.
Step S202, if the current system time is in the starting time period of the first electric heating unit, flow information of the air source heat pump is obtained, and the flow information is used for representing the output water quantity of the air source heat pump within a preset time period.
Illustratively, the traffic information includes: the water outlet flow and the water outlet time duration are characterized by the output water volume of the heat pump water heater in unit time duration; the water outlet time represents the duration of the hot water output by the heat pump water heater.
In step S203, when the system time is in the on period of the first electric heating unit and is not in the on period of the second electric heating unit, only the first electric heating unit is turned on.
Illustratively, the on-period of the first electric heating unit and the on-period of the second electric heating unit are set for a user, or the air source heat pump automatically generates information according to historical usage data of the user. More specifically, the turn-on period of the first electric heating unit is within the turn-on period of the first electric heating unit, for example, the turn-on period of the first electric heating unit is 16:00-22:00, and the turn-on period of the second electric heating unit is 20:00-22: 00. The hot water in the inner container reaches the first temperature after being heated by the heat exchange fins communicated with the heat pump, and at the moment, the heat pump does not heat the water temperature in the inner container any more under the limitation of factors such as environment temperature or power consumption. And then, after the starting time interval (16:00-22:00) of the first electric heating unit is reached and the starting time interval (20:00-22:00) of the second electric heating unit is not reached, the air source heat pump only starts the first electric heating unit to uniformly heat the water temperature in the inner container, so that the water temperature is uniformly increased to the second temperature. Compared with the second electric heating unit arranged on the upper part, the first electric heating unit uniformly heats the water in the inner container in a circulating way, the heat is more fully released, and the overall heat efficiency is higher. The low-power-consumption heating of the air source heat pump in the starting period of the first electric heating unit is realized.
Step S204, when the system time is in the starting time period of the second electric heating unit, if the water outlet flow is in the first flow interval, the starting states of the first electric heating unit and the second electric heating unit are determined according to the water outlet time length and the first time length threshold value.
Illustratively, the water outlet time length corresponds to the user behavior of the user, for example, when the user washes hands, the water using behavior of the user is short in duration, and accordingly, the water outlet time length of the air source heat pump is also short; on the contrary, when the user bathes, the duration of the water using action of the user is long, and the water outlet duration of the air source heat pump is also long. Therefore, according to the water outlet duration, the water using behavior of the user can be judged, and the water using requirement of the user is further determined. The mapping relationship between the water using behavior and the water outlet duration can be determined by the historical water using data of the user, and is not described herein again.
Exemplarily, the second electric heating unit is a heating unit for further heating the local water temperature in the interior to realize that the air source heat pump rapidly outputs high-temperature hot water. When the system time is in the starting period of the second electric heating unit, the system time corresponds to the high-temperature water demand of the user. Because the second electric heating unit is arranged on the upper part of the inner container, compared with the first electric heating unit arranged on the lower part of the inner container, the comprehensive heat efficiency is lower, and the starting of the second electric heating unit means higher energy consumption. Therefore, the activation of the second electric heating unit needs to be actually further refined so that the activation timing of the second electric heating unit can be matched with the water demand of the user, thereby reducing the ineffective heating of the second electric heating unit. Specifically, the water outlet flow rate and the water using equipment have a corresponding relationship, and if the water outlet flow rate is within the first flow rate interval, it indicates that the water using requirement corresponding to the water using equipment at this time is hot water at the second temperature, that is, the temperature requirement can be met only by starting the first electric heating unit. However, when the water outlet time of the air source heat pump is too long, the temperature in the inner container may be lowered as a whole, so that the water outlet temperature is affected, and therefore, on the basis of the water outlet flow, the opening states of the first electric heating unit and the second electric heating unit are judged based on the first time threshold.
Optionally, the determining the on-state of the first electric heating unit and the second electric heating unit according to the water outlet time length and the first time length threshold value comprises the following two steps.
Step S2041: if the water outlet time is less than the first time threshold, only the first electric heating unit is started.
Step S2042, if the water outlet duration is longer than the first duration threshold, the first electric heating unit and/or the second electric heating unit are/is started.
For example, when the water outlet time is less than the first time threshold (for example, 1 hour), the water temperature in the liner does not decrease greatly, and the hot water can be maintained within a certain range only by means of the first electric heating unit, and at this time, only the first electric heating unit is turned on. And when the water outlet duration is longer than the first duration threshold, the water temperature in the liner is greatly reduced, and at the moment, in order to ensure the water outlet temperature, the first electric heating unit and the second electric heating unit are simultaneously started. In addition, when the output power of the second electric heating unit is higher than that of the first electric heating unit, only the second electric heating unit may be turned on. In this embodiment, the length of the water outlet time is determined through the first time length threshold, so that the water temperature is guaranteed not to fluctuate and decrease when a user uses a water demand (corresponding to the water outlet temperature achieved by only starting the first electric heating unit) at an intermediate temperature, and the water comfort level is improved.
Step S205, when the system time is in the starting time period of the second electric heating unit, if the water outlet flow is in the second flow interval, the starting states of the first electric heating unit and the second electric heating unit are determined according to the water outlet time length and the second time length threshold.
For example, according to the correspondence relationship between the water outlet flow rate and the water using equipment, if the water outlet flow rate is in the second flow rate interval, the water using requirement corresponding to the water using equipment at this time is the hot water at the third temperature, that is, the temperature requirement can be met by starting the first electric heating unit and the second electric heating unit. However, when the water outlet time period of the air source heat pump is short, the first electric heating unit and the second electric heating unit can be further controlled based on the second time period threshold value, so as to further reduce the energy consumption.
Optionally, determining the on-state of the first electric heating unit and the second electric heating unit according to the water outlet time length and the second time length threshold includes the following two steps:
step S2051, if the water outlet duration is greater than the second duration threshold, the first electric heating unit and/or the second electric heating unit is/are turned on.
Step S2052, if the water outlet time is less than the second time threshold, the first electric heating unit is turned off, and the second electric heating unit is turned on.
For example, the water outlet duration corresponds to the water usage behavior of the user, and when the water outlet duration is greater than the second duration threshold, the water usage behavior corresponding to the user may be determined. For example, when the water outlet flow is a, it is determined that the corresponding water consuming device is a high-temperature water faucet of a bath, when the water continuously discharged from the high-temperature water faucet exceeds a second time threshold (e.g., 2 minutes), the user behavior is determined, and the water is heated with the heating power meeting the water demand (i.e., the first electric heating unit and the second electric heating unit are simultaneously turned on), otherwise, the first electric heating unit is turned off, only the second electric heating unit is turned on, the hot water in the inner container is heated with the lower heating power, the water demand of the user for a short time (e.g., washing hands) is met, and the energy consumption of the air source heat pump is reduced.
Optionally, after step S203, the method further comprises:
and S206, acquiring the outlet water temperature of the air source heat pump, and determining the temperature change trend of the water temperature according to the outlet water temperature, wherein the temperature change trend comprises a temperature rising trend and a temperature falling trend.
In step S207, when only the first electric heating unit is turned on, if the temperature variation trend of the outlet water temperature is a temperature decrease trend, the first electric heating unit and the second electric heating unit are turned on at the same time.
Exemplarily, the outlet water temperature of the air source heat pump is obtained through a temperature sensor arranged in the air source heat pump, and a corresponding temperature change trend is determined according to the outlet water temperature, wherein when the temperature change trend of the outlet water temperature is a temperature decrease trend, it indicates that the heat output by the first electric heating unit cannot maintain a stable outlet water temperature under the water demand corresponding to the activation of only the first electric heating unit, at this time, the second electric heating unit is used as a supplementary heat source to heat the water temperature in the inner container by activating the second electric heating unit, so that the problem that the heat power originally determined by the water demand of single-point water (that is, only the first electric heating unit is activated) cannot meet the water temperature demand of multi-point water due to the excessive water outlet amount under the condition of multi-point water consumption is avoided. Thereby improving the stability of the temperature of the outlet water.
In this embodiment, the implementation manners of step S201 to step S202 are the same as the implementation manners of step S101 to step S102 in the embodiment shown in fig. 2 of the present invention, and are not described again.
Fig. 5 is a schematic structural diagram of an air source heat pump control device according to an embodiment of the present invention, which is applied to an air source heat pump, where the air source heat pump includes a first electrical heating unit and a second electrical heating unit, and as shown in fig. 5, the air source heat pump control device 3 according to this embodiment includes:
a configuration module 31, configured to obtain configuration information, where the configuration information includes an on-period of the first electric heating unit and an on-period of the second electric heating unit;
the obtaining module 32 is configured to obtain flow information of the air source heat pump if the current system time is in the starting period of the first electric heating unit, where the flow information is used to represent an output water amount of the air source heat pump within a preset time period;
and the control module 33 is used for starting the first electric heating unit and/or starting the first electric heating unit and the second electric heating unit according to the flow information, the starting time period of the first electric heating unit and the starting time period of the second electric heating unit.
The configuration module 31, the acquisition module 32, and the control module 33 are connected in sequence. The air source heat pump control device 3 provided in this embodiment may implement the technical solution of the method embodiment shown in any one of fig. 2 to 4, and the implementation principle and the technical effect are similar, and are not described herein again.
In a possible implementation manner, the configuration information further includes a first flow rate interval corresponding to the first electrical heating unit, and a second flow rate interval corresponding to the second electrical heating unit; the flow information comprises outlet water flow, and the outlet water flow represents the output water volume of the heat pump water heater in unit time length; the control module 33 is specifically configured to: when the system time is in the starting time period of the first electric heating unit and is not in the starting time period of the second electric heating unit, only the first electric heating unit is started; when the system time is in the starting time period of the second electric heating unit, if the water outlet flow is positioned in the first flow interval, only the first electric heating unit is started; and if the water outlet flow is positioned in the second flow interval, starting the first electric heating unit and/or the second electric heating unit.
In a possible implementation manner, the configuration information further includes a first duration threshold corresponding to the first electrical heating unit, and a second duration threshold corresponding to the second electrical heating unit; the flow information also comprises water outlet duration which represents the duration of the hot water output by the heat pump water heater; the control module 33 is specifically configured to, when determining that the effluent flow rate is within the first flow rate interval and only turning on the first electrical heating unit: and if the water outlet flow is positioned in the first flow interval and the water outlet duration is less than the first time threshold, starting the first electric heating unit.
In one possible implementation, the control module 33 is further configured to: and if the water outlet flow is positioned in the first flow interval and the water outlet duration is greater than the first time threshold, starting the first electric heating unit and/or the second electric heating unit.
In a possible implementation manner, the configuration information further includes a first time length threshold corresponding to the first electrical heating unit, and a second time length threshold corresponding to the second electrical heating unit; the flow information also comprises water outlet duration which represents the duration of the hot water output by the heat pump water heater; the control module 33 is specifically configured to, when determining that the effluent flow rate is within the second flow rate interval and turning on the first electrical heating unit and/or the second electrical heating unit: and if the water outlet flow is positioned in the second flow interval and the water outlet time length is greater than the second time length threshold value, starting the first electric heating unit and/or the second electric heating unit.
In one possible implementation, the control module 33 is further configured to: if the water outlet flow is located in the second flow interval and the water outlet duration is smaller than the second duration threshold, the first electric heating unit is closed and the second electric heating unit is opened.
In one possible implementation, the control module 33 is further configured to: acquiring the outlet water temperature of an air source heat pump; determining the temperature change trend of the water temperature according to the outlet water temperature, wherein the temperature change trend comprises a temperature rising trend and a temperature falling trend; when only the first electric heating unit is started, if the temperature change trend of the outlet water temperature is a temperature decrease trend, the first electric heating unit and the second electric heating unit are started at the same time.
In one possible implementation manner, the configuration information includes a plurality of sub-on periods corresponding to the first electric heating unit and a plurality of sub-on periods corresponding to the second electric heating unit; each sub-starting time interval corresponding to the second electric heating unit corresponds to a first flow interval respectively; each sub-starting time interval corresponding to the second electric heating unit corresponds to a second flow interval respectively.
Fig. 6 is a schematic diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 6, an electronic device 4 according to the embodiment includes: a memory 41, a processor 42 and a computer program.
Wherein a computer program is stored in the memory 41 and configured to be executed by the processor 42 to implement the air source heat pump control method according to any one of the embodiments corresponding to fig. 2-4 of the present invention.
The memory 41 and the processor 42 are connected by a bus 43.
The relevant description may be understood by referring to the relevant description and effect corresponding to the steps in the embodiments corresponding to fig. 2 to fig. 4, and redundant description is not repeated here.
One embodiment of the present invention provides a computer readable storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the air source heat pump control method provided in any one of the embodiments corresponding to fig. 2-4 of the present invention.
The computer readable storage medium may be, among others, ROM, Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.
An embodiment of the invention provides a computer program product comprising a computer program for execution by a processor of a method of controlling an air source heat pump according to any one of the embodiments of the invention corresponding to fig. 2-4.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules is merely a division of logical functions, and an actual implementation may have another division, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements 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.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. An air source heat pump control method is applied to an air source heat pump, the air source heat pump comprises a first electric heating unit and a second electric heating unit, and the method comprises the following steps:
acquiring configuration information, wherein the configuration information comprises the starting time interval of the first electric heating unit and the starting time interval of the second electric heating unit;
if the current system time is in the starting time period of the first electric heating unit, acquiring flow information of the air source heat pump, wherein the flow information is used for representing the output water quantity of the air source heat pump within a preset time length;
and starting the first electric heating unit and/or starting the first electric heating unit and the second electric heating unit according to the flow information, the starting time period of the first electric heating unit and the starting time period of the second electric heating unit.
2. The method of claim 1, further comprising a first flow interval corresponding to the first electrical heating unit and a second flow interval corresponding to the second electrical heating unit in the configuration information; the flow information comprises outlet water flow, and the outlet water flow represents the output water quantity of the heat pump water heater in unit time;
turning on the first electric heating unit and/or turning on the first electric heating unit and the second electric heating unit according to the flow rate information, the turn-on period of the first electric heating unit, and the turn-on period of the second electric heating unit, including:
when the system time is in the starting time period of the first electric heating unit and is not in the starting time period of the second electric heating unit, only starting the first electric heating unit;
when the system time is in the starting time period of the second electric heating unit, if the effluent flow is in the first flow interval, only starting the first electric heating unit; and if the water outlet flow is positioned in the second flow interval, starting the first electric heating unit and/or the second electric heating unit.
3. The method of claim 2, further comprising a first time threshold corresponding to the first electrical heating unit and a second time threshold corresponding to the second electrical heating unit in the configuration information; the flow information further comprises water outlet duration, and the water outlet duration represents the duration of the hot water output by the heat pump water heater;
if the effluent flow is located in the first flow interval, only starting the first electric heating unit, including:
and if the water outlet flow is positioned in the first flow interval and the water outlet duration is less than the first time threshold, starting the first electric heating unit.
4. The method of claim 3, further comprising:
and if the water outlet flow is positioned in the first flow interval and the water outlet time length is greater than the first time length threshold value, starting the first electric heating unit and/or the second electric heating unit.
5. The method of claim 2, further comprising a first time threshold corresponding to the first electrical heating unit and a second time threshold corresponding to the second electrical heating unit in the configuration information; the flow information further comprises water outlet duration, and the water outlet duration represents the duration of the hot water output by the heat pump water heater;
if the water outlet flow is located in the second flow interval, the first electric heating unit and/or the second electric heating unit are/is started, and the method comprises the following steps:
and if the water outlet flow is positioned in the second flow interval and the water outlet time length is greater than the second time length threshold value, starting the first electric heating unit and/or the second electric heating unit.
6. The method of claim 5, further comprising: if the water outlet flow is located in the second flow interval and the water outlet time is smaller than the second time threshold, the first electric heating unit is closed and the second electric heating unit is opened.
7. The method according to any one of claims 1-6, further comprising:
acquiring the outlet water temperature of the air source heat pump;
determining the temperature change trend of the outlet water temperature according to the outlet water temperature, wherein the temperature change trend comprises a temperature rising trend and a temperature falling trend;
when only the first electric heating unit is started, if the temperature change trend of the outlet water temperature is the temperature decrease trend, the first electric heating unit and the second electric heating unit are started simultaneously.
8. An air source heat pump control device is applied to an air source heat pump, the air source heat pump comprises a first electric heating unit and a second electric heating unit, and the device comprises:
a configuration module, configured to obtain configuration information, where the configuration information includes an on-period of the first electric heating unit and an on-period of the second electric heating unit;
the acquisition module is used for acquiring flow information of the air source heat pump if the current system time is in the starting period of the first electric heating unit, wherein the flow information is used for representing the output water volume of the air source heat pump within a preset time length;
and the control module is used for starting the first electric heating unit and/or starting the first electric heating unit and the second electric heating unit according to the flow information, the starting time interval of the first electric heating unit and the starting time interval of the second electric heating unit.
9. An electronic device, comprising: a memory, a processor, and a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the air-source heat pump control method of any of claims 1 to 7.
10. A computer readable storage medium having stored thereon computer executable instructions for implementing the air source heat pump control method of any one of claims 1 to 7 when executed by a processor.
CN202110998009.6A 2021-08-27 2021-08-27 Air source heat pump control method and device, electronic equipment and storage medium Pending CN114963516A (en)

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CN201262474Y (en) * 2008-09-05 2009-06-24 李洪良 Stream impulse control water heater
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CN108286795A (en) * 2017-01-09 2018-07-17 芜湖美的厨卫电器制造有限公司 Water heater and its control method
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* Cited by examiner, † Cited by third party
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CN201262474Y (en) * 2008-09-05 2009-06-24 李洪良 Stream impulse control water heater
WO2013027312A1 (en) * 2011-08-24 2013-02-28 パナソニック株式会社 Heating system control method and heating system
CN103134188A (en) * 2011-11-29 2013-06-05 西安扩力机电科技有限公司 Integrated control system used for electrically heated boiler
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