CN117387179A

CN117387179A - Control method and control device of air conditioner and air conditioner

Info

Publication number: CN117387179A
Application number: CN202311407278.6A
Authority: CN
Inventors: 李梦璐; 李天阳; 李思佳
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2023-10-26
Filing date: 2023-10-26
Publication date: 2024-01-12

Abstract

The application provides a control method, a control device and an air conditioner of the air conditioner, wherein the air conditioner at least comprises a first valve, a second valve, an indoor heat exchanger, an outdoor heat exchanger and a water side economizer, the indoor heat exchanger and the outdoor heat exchanger are connected in series, the outdoor heat exchanger and the water side economizer are connected in parallel, the first valve is used for controlling a water source to enter the water side economizer, and the second valve is used for controlling the water source to enter the outdoor heat exchanger, and the method comprises the following steps: in a refrigerating mode, acquiring the temperature of the inlet water; when the water inlet temperature is smaller than the preset temperature, the first valve is controlled to be opened, the second valve is controlled to be closed, the indoor temperature and the set temperature are obtained, and when the absolute value of the difference value between the indoor temperature and the set temperature is larger than the preset difference value, the second valve is controlled to be opened; and under the condition that the water inlet temperature is greater than or equal to the preset temperature, controlling the first valve to be closed and controlling the second valve to be opened. Through this application, solved the air conditioner and carried out the big problem of mechanical refrigeration electric energy consumption.

Description

Control method and control device of air conditioner and air conditioner

Technical Field

The present disclosure relates to the field of air conditioner control technologies, and in particular, to a control method and device for an air conditioner, and a computer readable storage medium.

Background

The ground source heat pump has the advantages of energy conservation, environmental protection, safe and stable operation and the like, so that the ground source heat pump system is rapidly developed, can utilize a ground water source to exchange heat, and utilizes natural resources, so that the energy conservation and the environmental protection are realized. The groundwater temperature is generally lower, the low-temperature water source can be directly used for exchanging heat with the ambient temperature of the user side, and the water-air heat exchanger is connected in parallel with the air-refrigerant evaporator side to pre-cool the ambient temperature of the user side. For the refrigeration requirement of the middle latitude area in most time, the economic benefit of traditional pure mechanical refrigeration is not high, and especially when the water source temperature is low, mechanical refrigeration is still used, the heat of a low-temperature water source is not fully utilized, and when part of heat sources are wasted, the electric energy consumption caused by mechanical refrigeration is high, and the system efficiency is not high.

Therefore, a method for reasonably utilizing resources and improving the comprehensive efficiency of the system is needed.

Disclosure of Invention

The main object of the present application is to provide a control method and a control device for an air conditioner, an air conditioner and a computer readable storage medium, so as to at least solve the problem of high mechanical refrigeration electric energy consumption of the air conditioner in the prior art.

In order to achieve the above object, according to one aspect of the present application, there is provided a control method of an air conditioner including at least a first valve for controlling a water source to enter the water side economizer, a second valve for controlling a water source to enter the outdoor heat exchanger, an indoor heat exchanger, and a water side economizer connected in series, the indoor heat exchanger and the outdoor heat exchanger being connected in parallel, comprising: in a refrigeration mode, acquiring a water inlet temperature, wherein the water inlet temperature is the temperature of a water source entering the air conditioner; when the water inlet temperature is smaller than a preset temperature, the first valve is controlled to be opened, the second valve is controlled to be closed, the indoor temperature and the set temperature are obtained, and when the absolute value of the difference value between the indoor temperature and the set temperature is larger than the preset difference value, the second valve is controlled to be opened; and under the condition that the water inlet temperature is greater than or equal to the preset temperature, controlling the first valve to be closed and controlling the second valve to be opened.

Optionally, the air conditioner further includes a pressure sensor and a flow sensor, and the first valve, the pressure sensor and the flow sensor are sequentially connected, and the method further includes: under the condition that the first valve is opened, controlling the flow of the first valve to be preset flow, and acquiring the pressure measured by the pressure sensor under the preset flow to obtain the current pressure; acquiring a one-to-one mapping relation between flow and maximum pressure, and determining preset pressure corresponding to the preset flow according to the one-to-one mapping relation between the flow and the maximum pressure, wherein the one-to-one mapping relation between the flow and the maximum pressure is calibrated in advance and represents the maximum pressure which can be born by the water side economizer under each flow; comparing the preset pressure with the current pressure, and outputting an alarm signal under the condition that the current pressure is greater than or equal to the preset pressure, wherein the alarm signal is used for reminding a user that the water side economizer is at risk of blockage.

Optionally, controlling the flow rate of the first valve to be a preset flow rate includes: acquiring a one-to-one mapping relation between valve opening and flow, and determining a preset opening corresponding to the preset flow according to the one-to-one mapping relation between the valve opening and the flow, wherein the one-to-one mapping relation between the valve opening and the flow is calibrated in advance and represents the opening of the first valve corresponding to each flow; and controlling the opening of the first valve to be the preset opening so that the flow of the first valve is the preset flow.

Optionally, the air conditioner further comprises a plurality of filters, and the plurality of filters are sequentially connected in series and installed at the water inlet of the water side economizer, and after outputting the alarm signal, the method further comprises: outputting a replacement signal, wherein the replacement signal is used for prompting replacement of one or more filters.

Optionally, the method further comprises: and under the condition that the current pressure is smaller than the preset pressure, keeping the flow of the first valve to be the preset flow.

Optionally, the method further comprises: and controlling the second valve to be closed under the condition that the absolute value of the difference value between the indoor temperature and the set temperature is smaller than or equal to the preset difference value.

Optionally, the method further comprises: and in a heating mode, controlling the first valve to be closed and controlling the second valve to be opened so as to heat by using the outdoor heat exchanger.

According to another aspect of the present application, there is provided a control device of an air conditioner, which is applied to an air conditioner, the air conditioner including at least a first valve, a second valve, an indoor heat exchanger, an outdoor heat exchanger and a water side economizer, the indoor heat exchanger and the outdoor heat exchanger being connected in series, the outdoor heat exchanger and the water side economizer being connected in parallel, the first valve being for controlling a water source to enter the water side economizer, the second valve being for controlling the water source to enter the outdoor heat exchanger, the control device comprising: the first acquisition unit is used for acquiring the water inlet temperature in a refrigerating mode, wherein the water inlet temperature is the temperature of a water source entering the air conditioner; the first control unit is used for controlling the first valve to be opened and controlling the second valve to be closed under the condition that the water inlet temperature is smaller than a preset temperature, acquiring indoor temperature and set temperature, and controlling the second valve to be opened under the condition that the absolute value of the difference value between the indoor temperature and the set temperature is larger than the preset difference value; the second control unit is used for controlling the first valve to be closed and controlling the second valve to be opened under the condition that the water inlet temperature is greater than or equal to the preset temperature.

According to yet another aspect of the present application, there is provided an air conditioner comprising an air conditioner and a controller in communication with the air conditioner, the air conditioner comprising a first valve, a second valve, an indoor heat exchanger, an outdoor heat exchanger, a pressure sensor, a flow sensor and a plurality of filters, the indoor heat exchanger and the outdoor heat exchanger being connected in series, the outdoor heat exchanger and the water side economizer being connected in parallel, the first valve being for controlling a water source to enter the water side economizer, the second valve being for controlling a water source to enter the outdoor heat exchanger, the first valve, the pressure sensor and the flow sensor being connected in series in sequence, a plurality of filters being connected in series in sequence and being mounted to a water inlet of the water side economizer, the air conditioner being for performing any one of the methods.

According to still another aspect of the present application, there is provided a computer-readable storage medium including a stored program, wherein the program, when executed, controls a device in which the computer-readable storage medium is located to perform any one of the control methods.

By applying the technical scheme, under the refrigeration mode, the water inlet temperature is acquired, under the condition that the water inlet temperature is smaller than the preset temperature, the first valve is controlled to be opened, so that a water source enters the water side economizer, the second valve is controlled to be closed, the water side economizer is preferentially adopted for cooling, then the indoor temperature and the set temperature are acquired, under the condition that the absolute value of the difference value of the indoor temperature and the set temperature is larger than the preset difference value, the second valve is controlled to be opened, so that the water source simultaneously enters the outdoor heat exchanger, namely the indoor heat exchanger and the outdoor heat exchanger are adopted for cooling together; and under the condition that the water inlet temperature is greater than or equal to the preset temperature, the first valve is controlled to be closed, the second valve is controlled to be opened, and the outdoor heat exchanger is directly used for mechanical cooling. Compared with the prior art, the method for reasonably controlling the refrigeration mode according to different conditions of the water inlet temperature by only adopting mechanical cooling to cause unreasonable resource utilization and electric energy waste of the air conditioner, the method can reasonably control the refrigeration mode according to different conditions of the water inlet temperature, and the water source cooling of the water side economizer and the mechanical cooling of the outdoor heat exchanger are combined, so that the consumption of electric energy is reduced, and the purpose of reasonably utilizing energy is achieved. Therefore, the problem of high electric energy consumption of mechanical refrigeration in the prior art can be solved, and the purposes of reducing the electric energy consumption and reasonably utilizing resources are achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a schematic flow chart of a control method of an air conditioner according to an embodiment of the present application;

fig. 2 is a schematic structural view of an air conditioner according to an embodiment of the present application;

fig. 3 is a schematic flow chart of a specific control method of an air conditioner according to an embodiment of the present application;

fig. 4 is a block diagram showing a control apparatus of an air conditioner according to an embodiment of the present application.

Wherein the above figures include the following reference numerals:

1. a compressor; 2. an indoor heat exchanger; 3. a four-way valve; 4. an electronic expansion valve; 5. an outdoor heat exchanger; 6. a water side economizer; 7. a temperature sensor; 8. a second valve; 9. a first valve; 10. a pressure sensor; 11. a flow sensor.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As described in the background art, in order to solve the problem of large mechanical refrigeration power consumption, embodiments of the present application provide a control method and a control device for an air conditioner, and a computer readable storage medium.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Fig. 1 is a flowchart of a control method of an air conditioner according to an embodiment of the present application. The air conditioner at least comprises a first valve, a second valve, an indoor heat exchanger, an outdoor heat exchanger and a water side economizer, wherein the indoor heat exchanger and the outdoor heat exchanger are connected in series, the outdoor heat exchanger and the water side economizer are connected in parallel, the first valve is used for controlling a water source to enter the water side economizer, the second valve is used for controlling the water source to enter the outdoor heat exchanger, and the method comprises the following steps of:

step S201, under a refrigeration mode, obtaining a water inlet temperature, wherein the water inlet temperature is the temperature of a water source entering the air conditioner;

specifically, in the conventional ground source heat pump refrigeration mode, heat generated by the compressor is carried away by a low-temperature water source in the water-refrigerant type condenser, and low-temperature refrigerant enters the air refrigerant type evaporator to cool the return air flow of the whole machine. The water source and the refrigerant are physically isolated in the condenser, the low-temperature water source conducts heat of the high-temperature refrigerant through the heat conduction belt, and the whole machine has a high refrigeration coefficient. The refrigeration mode is mechanical refrigeration. For the climate of the mid-latitude area, the annual change is large, the outdoor temperature is not high in most of the time, and the refrigeration requirement is not large in most of the time. Therefore, the traditional pure mechanical refrigeration has low economic benefit. Under the condition that the refrigeration requirement in the mid-latitude area is not great, the underground water resource can be utilized for cooling, so that the consumption of electric energy can be reduced, but the air conditioner can only be used for cooling, namely the refrigeration of the air conditioner, and the air conditioner compressor is utilized for heating. Therefore, in the refrigeration mode, it is first judged whether the temperature of the water source can be used for cooling, and the temperature of the water source is measured by the temperature sensor before the water source enters the first valve or the second valve, and the water source in the application refers to the underground water source. The outdoor heat exchanger is a main machine side heat exchanger, the refrigeration is performed in the mechanical refrigeration mode, the indoor heat exchanger is a heat exchanger for cooling by adopting a refrigerant, and the water side economizer is a heat exchanger for cooling air by using a low-temperature water source, namely, the refrigeration is performed in the underground water source mode.

Step S202, controlling the first valve to be opened and controlling the second valve to be closed under the condition that the water inlet temperature is smaller than a preset temperature, obtaining the indoor temperature and the set temperature, and controlling the second valve to be opened under the condition that the absolute value of the difference value between the indoor temperature and the set temperature is larger than the preset difference value;

specifically, if the water inlet temperature is lower than the preset temperature, namely the water inlet temperature is lower, the first valve is controlled to be opened and the second valve is controlled to be closed, namely the water source is preferentially used for cooling, and the low-temperature water source enters the water side economizer for cooling. And then acquiring the indoor temperature after the water source is cooled and the set temperature of a user, calculating the difference value between the indoor temperature and the set temperature, and controlling the second valve to be opened at the moment when the absolute value of the difference value is larger than the preset difference value, namely the indoor temperature is still higher and the expected cooling effect is not achieved, namely the water source enters the outdoor heat exchanger to mechanically cool, and at the moment, the mechanical cooling and the water source cooling simultaneously play a role in cooling the indoor so as to achieve the better cooling effect.

Step S203, controlling the first valve to close and controlling the second valve to open when the water inlet temperature is greater than or equal to the preset temperature.

Specifically, when the temperature of the inlet water measured by the temperature sensor is greater than or equal to the preset temperature, namely, the inlet water temperature is higher, the cooling effect cannot be achieved, the first valve is closed, and the second valve is opened, namely, the outdoor heat exchanger is directly used for mechanical cooling. Therefore, when the water source temperature is lower, the water source cooling is preferentially adopted, the cooling effect does not reach the expected value, the water source cooling and the mechanical cooling are adopted simultaneously, when the water source temperature is higher, the mechanical cooling is directly adopted, the consumption of electric energy resources is reduced, the water resources are reasonably utilized for cooling, and the reasonable utilization of the energy sources is realized.

According to the embodiment, under a refrigeration mode, the water inlet temperature is obtained, under the condition that the water inlet temperature is smaller than a preset temperature, the first valve is controlled to be opened, so that a water source enters the water side economizer, the second valve is controlled to be closed, the water side economizer is preferentially adopted for cooling, then the indoor temperature and the set temperature are obtained, under the condition that the absolute value of the difference value of the indoor temperature and the set temperature is larger than the preset difference value, the second valve is controlled to be opened, so that the water source simultaneously enters the outdoor heat exchanger, namely the water side economizer and the outdoor heat exchanger are adopted for cooling together; and under the condition that the water inlet temperature is greater than or equal to the preset temperature, the first valve is controlled to be closed, the second valve is controlled to be opened, and the outdoor heat exchanger is directly used for mechanical cooling. Compared with the prior art, the method for reasonably controlling the refrigeration mode according to different conditions of the water inlet temperature by only adopting mechanical cooling to cause unreasonable resource utilization and electric energy waste of the air conditioner, the method can reasonably control the refrigeration mode according to different conditions of the water inlet temperature, and the water source cooling of the water side economizer and the mechanical cooling of the outdoor heat exchanger are combined, so that the consumption of electric energy is reduced, and the purpose of reasonably utilizing energy is achieved. Therefore, the problem of high electric energy consumption of mechanical refrigeration in the prior art can be solved, and the purposes of reducing the electric energy consumption and reasonably utilizing resources are achieved.

In a specific implementation process, the air conditioner further comprises a pressure sensor and a flow sensor, the first valve, the pressure sensor and the flow sensor are sequentially connected, and the method further comprises the following steps: step S301: under the condition that the first valve is opened, controlling the flow of the first valve to be a preset flow, and acquiring the pressure measured by the pressure sensor under the preset flow to obtain the current pressure; step S302: acquiring a one-to-one mapping relation between the flow and the maximum pressure, and determining preset pressure corresponding to the preset flow according to the one-to-one mapping relation between the flow and the maximum pressure, wherein the one-to-one mapping relation between the flow and the maximum pressure is calibrated in advance and represents the maximum pressure which can be born by the water side economizer under each flow; step S303: and comparing the preset pressure with the current pressure, and outputting an alarm signal under the condition that the current pressure is greater than or equal to the preset pressure, wherein the alarm signal is used for reminding a user that the water side economizer is blocked. According to the method, the pressure sensor and the flow sensor are arranged at the water inlet, so that the pressure and the flow of the inlet water can be detected, whether the water side economizer is blocked or not is indirectly detected, and a user is timely reminded of maintaining when the water side economizer is blocked.

Specifically, from the direction of inflow of the water flow, the first valve, the pressure sensor and the flow sensor are connected in series in this order, and then the water flow enters the water side economizer. Under the condition that the first valve is opened, detecting whether the indoor sensor is blocked, controlling the flow of the first valve to be a fixed preset flow by adopting a control variable method, and obtaining the pressure measured by the pressure sensor under the preset flow to obtain the corresponding current pressure under the preset flow. And then, obtaining a one-to-one mapping relation between the flow and the maximum pressure, and determining the maximum pressure corresponding to the preset flow, namely the preset pressure, through the one-to-one mapping relation, namely the maximum pressure corresponding to each preset flow, wherein if the current pressure is greater than or equal to the preset pressure, the current pressure indicates that the water side economizer is possibly blocked, and an alarm signal is generated and output to remind the water side economizer of risk.

In order to control the flow rate of the first valve to be the preset flow rate, in some alternative embodiments, the step S301 may be implemented by: acquiring a one-to-one mapping relation between valve opening and flow, and determining a preset opening corresponding to the preset flow according to the one-to-one mapping relation between the valve opening and the flow, wherein the one-to-one mapping relation between the valve opening and the flow is calibrated in advance and represents the opening of the first valve corresponding to each flow; controlling the opening of the first valve to be the preset opening so that the flow of the first valve is the preset flow. According to the method, the opening of the first valve is set so that the flow is the preset flow, and therefore the flow of the first valve can be accurately controlled.

Specifically, the larger the valve opening is, the larger the flow rate flowing through the first valve is, so that the opening corresponding to the preset flow rate, namely the preset opening, can be determined according to the one-to-one mapping relation by acquiring the one-to-one mapping relation between the flow rate and the valve opening, and the flow rate can be made to be the preset flow rate by controlling the opening of the first valve to be the preset opening.

In some alternative embodiments, the air conditioner further includes a plurality of filters connected in series in sequence and installed at the water inlet of the water side economizer, and after outputting the alarm signal, the method further includes: outputting a replacement signal, wherein the replacement signal is used for prompting replacement of one or more filters. The air conditioner in the method also comprises a plurality of filters, so that the excessive impurities such as sediment in the underground water source can be filtered, and after the alarm signal is output, a replacement signal is further output to prompt the timely replacement of the filters.

In the specific implementation process, a plurality of filters are used for filtering impurities in a water source entering the indoor heat exchanger, and the greater the degree of filter blockage is along with the increase of the service time, so that after the alarm signal is output, a replacement signal is further output to prompt a user to replace the filter.

In some alternative embodiments, the above method further comprises the steps of: and under the condition that the current pressure is smaller than the preset pressure, keeping the flow of the first valve to be the preset flow. According to the method, under the condition that the current pressure is smaller than the preset pressure, the first valve is kept to be at the preset flow, namely, the normal operation is kept, so that the indoor heat exchanger can be determined to be not blocked and kept to be in normal operation.

Specifically, when the current pressure is smaller than the preset pressure, it indicates that the pressure of the water side economizer is within the allowable pressure range, and the normal operation is maintained without warning, so that the flow of the first valve is kept to be the preset flow, and of course, the flow can also be other set flows, which means that the normal operation state of the first valve is kept, and the user is not prompted to maintain, replace and the like.

In order to reasonably utilize the water resource and the electric energy resource for cooling, the method further comprises the following steps: and controlling the second valve to be closed under the condition that the absolute value of the difference value between the indoor temperature and the set temperature is smaller than or equal to the preset difference value. According to the method, under the condition that the indoor temperature and the set temperature are small, the water source is continuously used for cooling, and the mechanical cooling mode of the outdoor heat exchanger is not used without opening the second valve, so that the cooling effect is achieved, and meanwhile, the electric energy resource is saved.

In the specific implementation process, after the first valve is opened and the water source is adopted for cooling, the indoor temperature is detected, and the absolute value of the difference value between the indoor temperature and the set temperature of the user is smaller than or equal to the preset difference value, so that the water source cooling of the water side economizer achieves the expected cooling effect, and therefore the second valve is not opened any more and the cooling is carried out in a mechanical cooling mode. Not only achieves the effect of cooling, but also saves the electric energy resource.

In some alternative embodiments, the above method further comprises the steps of: in the heating mode, the first valve is controlled to be closed, and the second valve is controlled to be opened, so that the outdoor heat exchanger is used for heating. Under the heating condition, the method only opens the second valve to adopt the outdoor heat exchanger to perform mechanical heating, so that a better heating effect can be achieved.

Specifically, under the heating condition, the underground water source cannot perform heating, so that the first valve is closed, the second valve is directly opened, and the compressor of the outdoor heat exchanger is used for performing heating.

In order to enable those skilled in the art to more clearly understand the technical solutions of the present application, the implementation process of the control method of the air conditioner of the present application will be described in detail below with reference to specific embodiments.

The embodiment relates to a specific air conditioner control method, fig. 2 shows an air conditioner, which comprises a compressor 1, an indoor heat exchanger 2, a four-way valve 3, an electronic expansion valve 4, an outdoor heat exchanger 5, a water side economizer 6, a temperature sensor 7, a second valve 8, a first valve 9, a pressure sensor 10 and a flow sensor 11, wherein a groundwater source is fed through a water inlet, and is discharged through a water outlet after flowing through the air conditioner, the indoor heat exchanger and the outdoor heat exchanger are connected in series, the outdoor heat exchanger and the water side economizer are connected in parallel, a plurality of filters are further added, the replacement period of the filters is judged by detecting pressure and flow, and a user is reminded of timely replacing the filter element, and fig. 3 shows a specific air conditioner control method, which comprises the following steps:

step S1: starting up a unit (an air conditioner);

step S2: judging whether the refrigerating mode is adopted, if so, executing the step S3, and if not, not entering the following control flow;

step S3: acquiring a water inlet temperature T1, judging whether the water inlet temperature is smaller than a preset temperature A, executing a step S4 under the condition of yes, and operating an outdoor side heat exchanger (outdoor heat exchanger) under the condition of no;

Step S4: the water side economizer is operated (the first valve is opened, and the water side economizer is operated);

step S5: judging whether the water side economizer meets the refrigeration requirement (acquiring the indoor temperature and the set temperature, and if the absolute value of the difference value between the indoor temperature and the set temperature is smaller than or equal to a preset difference value, the refrigeration requirement is met), if yes, executing a step S6, and if not, executing a step S7;

step S6: the compressor does not need to be started (the second valve is not started), and the operation is continued according to the mode;

step S7: the compressor is turned on (the second valve is turned on), and the outdoor side heat exchanger (the outdoor heat exchanger) and the water side economizer are operated simultaneously.

The embodiment of the application also provides a control device of the air conditioner, and the control device of the air conditioner can be used for executing the control method for the air conditioner. The device is used for realizing the above embodiments and preferred embodiments, and is not described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.

The following describes a control device of an air conditioner provided in an embodiment of the present application.

Fig. 4 is a schematic view of a control device of an air conditioner according to an embodiment of the present application. The device is applied to an air conditioner, the air conditioner at least comprises a first valve, a second valve, an indoor heat exchanger, an outdoor heat exchanger and a water side economizer, the indoor heat exchanger and the outdoor heat exchanger are connected in series, the outdoor heat exchanger and the water side economizer are connected in parallel, the first valve is used for controlling a water source to enter the water side economizer, the second valve is used for controlling the water source to enter the outdoor heat exchanger, and the device comprises:

a first obtaining unit 10, configured to obtain a water inlet temperature in a cooling mode, where the water inlet temperature is a temperature of a water source entering the air conditioner;

A first control unit 20, configured to control the first valve to be opened and the second valve to be closed when the inlet water temperature is less than a preset temperature, obtain an indoor temperature and a set temperature, and control the second valve to be opened when an absolute value of a difference between the indoor temperature and the set temperature is greater than a preset difference;

And a second control unit 30, configured to control the first valve to be closed and control the second valve to be opened when the inlet water temperature is greater than or equal to the preset temperature.

According to the embodiment, under a refrigeration mode, the water inlet temperature is obtained, under the condition that the water inlet temperature is smaller than a preset temperature, the first valve is controlled to be opened, so that a water source enters the water side economizer, the second valve is controlled to be closed, the water side economizer is preferentially adopted for cooling, then the indoor temperature and the set temperature are obtained, under the condition that the absolute value of the difference value of the indoor temperature and the set temperature is larger than the preset difference value, the second valve is controlled to be opened, so that the water source simultaneously enters the outdoor heat exchanger, namely the indoor heat exchanger and the outdoor heat exchanger are adopted for cooling together; and under the condition that the water inlet temperature is greater than or equal to the preset temperature, the first valve is controlled to be closed, the second valve is controlled to be opened, and the outdoor heat exchanger is directly used for mechanical cooling. Compared with the prior art, the air conditioner only adopts mechanical cooling to cause unreasonable resource utilization and electric energy waste device, the application can reasonably control the refrigeration mode according to different conditions of the water inlet temperature, adopts the combination of water source cooling of the water side economizer and mechanical cooling of the outdoor heat exchanger, reduces the consumption of electric energy, and achieves the purpose of reasonably utilizing energy. Therefore, the problem of high electric energy consumption of mechanical refrigeration in the prior art can be solved, and the purposes of reducing the electric energy consumption and reasonably utilizing resources are achieved.

In a specific implementation process, the air conditioner further comprises a pressure sensor and a flow sensor, the first valve, the pressure sensor and the flow sensor are sequentially connected, the device further comprises a second acquisition unit, a first determination unit and a first output unit, wherein the second acquisition unit is used for controlling the flow of the first valve to be preset flow under the condition that the first valve is opened, and acquiring the pressure measured by the pressure sensor under the preset flow to obtain the current pressure; the first determining unit is used for obtaining a one-to-one mapping relation between the flow and the maximum pressure, and determining preset pressure corresponding to the preset flow according to the one-to-one mapping relation between the flow and the maximum pressure, wherein the one-to-one mapping relation between the flow and the maximum pressure is calibrated in advance and represents the maximum pressure which can be born by the water side economizer under each flow; the first output unit is used for comparing the preset pressure with the current pressure, and outputting an alarm signal under the condition that the current pressure is greater than or equal to the preset pressure, wherein the alarm signal is used for reminding a user that the water side economizer is at risk of blockage. The device sets up pressure sensor and flow sensor in water inlet department, can detect the pressure and the flow of intaking like this to whether indirect detection water side economic ware takes place to block up, in time reminds the user to maintain when taking place to block up.

In order to control the flow rate of the first valve to be a preset flow rate, in some optional embodiments, the second obtaining unit includes a first determining module and a control module, where the first determining module is configured to obtain a one-to-one mapping relationship between the valve opening and the flow rate, and determine a preset opening corresponding to the preset flow rate according to the one-to-one mapping relationship between the valve opening and the flow rate, where the one-to-one mapping relationship between the valve opening and the flow rate is calibrated in advance and indicates the opening of the first valve corresponding to each flow rate; the control module is used for controlling the opening degree of the first valve to be the preset opening degree so that the flow rate of the first valve is the preset flow rate. The device enables the flow to be the preset flow by setting the opening of the first valve, so that the flow of the first valve can be accurately controlled.

In some alternative embodiments, the air conditioner further comprises a plurality of filters, the plurality of filters are sequentially connected in series and installed at the water inlet of the water side economizer, and the apparatus further comprises a second output unit for outputting a replacement signal after outputting the alarm signal, wherein the replacement signal is used for prompting replacement of one or more filters. The air conditioner in the device also comprises a plurality of filters, so that the unnecessary sediment and other impurities in the underground water source can be filtered, and after the alarm signal is output, a replacement signal is further output to prompt the timely replacement of the filters.

In some optional embodiments, the apparatus further includes a maintaining unit configured to maintain the flow rate of the first valve at the preset flow rate when the current pressure is less than the preset pressure. Under the condition that the current pressure is smaller than the preset pressure, the device keeps the first valve at the preset flow, namely keeps normal operation, so that the indoor heat exchanger can be determined to be not blocked and keep normal operation.

In order to reasonably utilize the water resource and the electric energy resource to cool, the device further comprises a third control unit, which is used for controlling the second valve to be closed under the condition that the absolute value of the difference value between the indoor temperature and the set temperature is smaller than or equal to the preset difference value. The device is under the less circumstances of indoor temperature and settlement temperature, continues to adopt the water source cooling, does not open the second valve and does not adopt the mechanical cooling's of outdoor heat exchanger mode to cool down promptly, can save electric energy resource when reaching the cooling effect like this.

In some alternative embodiments, the apparatus further comprises a fourth control unit for controlling the first valve to be closed and the second valve to be opened in a heating mode, so as to perform heating using the outdoor heat exchanger. Under the heating condition, the device only opens the second valve to adopt the outdoor heat exchanger to carry out mechanical heating, so that a better heating effect can be achieved.

The control device of the air conditioner comprises a processor and a memory, wherein the first acquisition unit, the second control unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions. The modules are all located in the same processor; alternatively, the above modules may be located in different processors in any combination.

The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The inner core can be provided with one or more than one, and the energy is reasonably utilized to cool by adjusting the parameters of the inner core.

The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.

The embodiment of the invention provides a computer readable storage medium, which comprises a stored program, wherein the program is used for controlling equipment where the computer readable storage medium is located to execute the control method of the air conditioner.

Specifically, the control method of the air conditioner comprises the following steps:

Optionally, the air conditioner further includes a pressure sensor and a flow sensor, where the first valve, the pressure sensor and the flow sensor are sequentially connected, and the method further includes: under the condition that the first valve is opened, controlling the flow of the first valve to be a preset flow, and acquiring the pressure measured by the pressure sensor under the preset flow to obtain the current pressure; acquiring a one-to-one mapping relation between the flow and the maximum pressure, and determining preset pressure corresponding to the preset flow according to the one-to-one mapping relation between the flow and the maximum pressure, wherein the one-to-one mapping relation between the flow and the maximum pressure is calibrated in advance and represents the maximum pressure which can be born by the water side economizer under each flow; and comparing the preset pressure with the current pressure, and outputting an alarm signal under the condition that the current pressure is greater than or equal to the preset pressure, wherein the alarm signal is used for reminding a user that the water side economizer is blocked.

Optionally, controlling the flow rate of the first valve to be a preset flow rate includes: acquiring a one-to-one mapping relation between valve opening and flow, and determining a preset opening corresponding to the preset flow according to the one-to-one mapping relation between the valve opening and the flow, wherein the one-to-one mapping relation between the valve opening and the flow is calibrated in advance and represents the opening of the first valve corresponding to each flow; controlling the opening of the first valve to be the preset opening so that the flow of the first valve is the preset flow.

Optionally, the method further comprises: in the heating mode, the first valve is controlled to be closed, and the second valve is controlled to be opened, so that the outdoor heat exchanger is used for heating.

The embodiment of the invention provides equipment, which comprises a processor, a memory and a program stored in the memory and capable of running on the processor, wherein the processor realizes at least the following steps when executing the program:

The device herein may be a server, PC, PAD, cell phone, etc.

The present application also provides a computer program product adapted to perform a program initialized with at least the following method steps when executed on a data processing device:

It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may be implemented in program code executable by computing devices, so that they may be stored in a storage device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.

From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

1) In the control method of the air conditioner, under a refrigeration mode, the water inlet temperature is obtained, under the condition that the water inlet temperature is smaller than the preset temperature, the first valve is controlled to be opened, so that a water source enters the water side economizer, the second valve is controlled to be closed, the water side economizer is preferentially used for cooling, then the indoor temperature and the set temperature are obtained, under the condition that the absolute value of the difference value of the indoor temperature and the set temperature is larger than the preset difference value, the second valve is controlled to be opened, so that the water source simultaneously enters the outdoor heat exchanger, namely the water side economizer and the outdoor heat exchanger are used for cooling together; and under the condition that the water inlet temperature is greater than or equal to the preset temperature, the first valve is controlled to be closed, the second valve is controlled to be opened, and the outdoor heat exchanger is directly used for mechanical cooling. Compared with the prior art, the method for reasonably controlling the refrigeration mode according to different conditions of the water inlet temperature by only adopting mechanical cooling to cause unreasonable resource utilization and electric energy waste of the air conditioner, the method can reasonably control the refrigeration mode according to different conditions of the water inlet temperature, and the water source cooling of the water side economizer and the mechanical cooling of the outdoor heat exchanger are combined, so that the consumption of electric energy is reduced, and the purpose of reasonably utilizing energy is achieved. Therefore, the problem of high electric energy consumption of mechanical refrigeration in the prior art can be solved, and the purposes of reducing the electric energy consumption and reasonably utilizing resources are achieved.

2) In the control device of the air conditioner, under a refrigeration mode, acquiring the water inlet temperature, controlling the first valve to be opened under the condition that the water inlet temperature is smaller than the preset temperature, enabling a water source to enter the water side economizer, controlling the second valve to be closed, preferentially adopting the water side economizer to cool, then acquiring the indoor temperature and the set temperature, and controlling the second valve to be opened under the condition that the absolute value of the difference value of the indoor temperature and the set temperature is larger than the preset difference value, enabling the water source to enter the outdoor heat exchanger at the same time, namely adopting the water side economizer and the outdoor heat exchanger to cool together; and under the condition that the water inlet temperature is greater than or equal to the preset temperature, the first valve is controlled to be closed, the second valve is controlled to be opened, and the outdoor heat exchanger is directly used for mechanical cooling. Compared with the prior art, the air conditioner only adopts mechanical cooling to cause unreasonable resource utilization and electric energy waste device, the application can reasonably control the refrigeration mode according to different conditions of the water inlet temperature, adopts the combination of water source cooling of the water side economizer and mechanical cooling of the outdoor heat exchanger, reduces the consumption of electric energy, and achieves the purpose of reasonably utilizing energy. Therefore, the problem of high electric energy consumption of mechanical refrigeration in the prior art can be solved, and the purposes of reducing the electric energy consumption and reasonably utilizing resources are achieved.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A control method of an air conditioner, wherein the air conditioner at least comprises a first valve, a second valve, an indoor heat exchanger, an outdoor heat exchanger and a water side economizer, the indoor heat exchanger and the outdoor heat exchanger are connected in series, the outdoor heat exchanger and the water side economizer are connected in parallel, the first valve is used for controlling a water source to enter the water side economizer, and the second valve is used for controlling the water source to enter the outdoor heat exchanger, comprising:

in a refrigeration mode, acquiring a water inlet temperature, wherein the water inlet temperature is the temperature of a water source entering the air conditioner;

when the water inlet temperature is smaller than a preset temperature, the first valve is controlled to be opened, the second valve is controlled to be closed, the indoor temperature and the set temperature are obtained, and when the absolute value of the difference value between the indoor temperature and the set temperature is larger than the preset difference value, the second valve is controlled to be opened;

And under the condition that the water inlet temperature is greater than or equal to the preset temperature, controlling the first valve to be closed and controlling the second valve to be opened.

2. The control method according to claim 1, wherein the air conditioner further includes a pressure sensor and a flow sensor, the first valve, the pressure sensor and the flow sensor being connected in sequence, the method further comprising:

under the condition that the first valve is opened, controlling the flow of the first valve to be preset flow, and acquiring the pressure measured by the pressure sensor under the preset flow to obtain the current pressure;

acquiring a one-to-one mapping relation between flow and maximum pressure, and determining preset pressure corresponding to the preset flow according to the one-to-one mapping relation between the flow and the maximum pressure, wherein the one-to-one mapping relation between the flow and the maximum pressure is calibrated in advance and represents the maximum pressure which can be born by the water side economizer under each flow;

comparing the preset pressure with the current pressure, and outputting an alarm signal under the condition that the current pressure is greater than or equal to the preset pressure, wherein the alarm signal is used for reminding a user that the water side economizer is at risk of blockage.

3. The control method according to claim 2, wherein controlling the flow rate of the first valve to be a preset flow rate includes:

acquiring a one-to-one mapping relation between valve opening and flow, and determining a preset opening corresponding to the preset flow according to the one-to-one mapping relation between the valve opening and the flow, wherein the one-to-one mapping relation between the valve opening and the flow is calibrated in advance and represents the opening of the first valve corresponding to each flow;

and controlling the opening of the first valve to be the preset opening so that the flow of the first valve is the preset flow.

4. The control method according to claim 2, wherein the air conditioner further comprises a plurality of filters, the plurality of filters being sequentially connected in series and installed at the water inlet of the water-side economizer, the method further comprising, after outputting the alarm signal:

outputting a replacement signal, wherein the replacement signal is used for prompting replacement of one or more filters.

5. The control method according to claim 2, characterized in that the method further comprises:

and under the condition that the current pressure is smaller than the preset pressure, keeping the flow of the first valve to be the preset flow.

6. The control method according to claim 1, characterized in that the method further comprises:

and controlling the second valve to be closed under the condition that the absolute value of the difference value between the indoor temperature and the set temperature is smaller than or equal to the preset difference value.

7. The control method according to claim 1, characterized in that the method further comprises:

and in a heating mode, controlling the first valve to be closed and controlling the second valve to be opened so as to heat by using the outdoor heat exchanger.

8. A control device of an air conditioner, characterized in that it is applied to the air conditioner, the air conditioner includes at least a first valve, a second valve, an indoor heat exchanger, an outdoor heat exchanger and a water side economizer, the indoor heat exchanger and the outdoor heat exchanger are connected in series, the outdoor heat exchanger and the water side economizer are connected in parallel, the first valve is used for controlling a water source to enter the water side economizer, the second valve is used for controlling the water source to enter the outdoor heat exchanger, the control device includes:

the first acquisition unit is used for acquiring the water inlet temperature in a refrigerating mode, wherein the water inlet temperature is the temperature of a water source entering the air conditioner;

The first control unit is used for controlling the first valve to be opened and controlling the second valve to be closed under the condition that the water inlet temperature is smaller than a preset temperature, acquiring indoor temperature and set temperature, and controlling the second valve to be opened under the condition that the absolute value of the difference value between the indoor temperature and the set temperature is larger than the preset difference value;

the second control unit is used for controlling the first valve to be closed and controlling the second valve to be opened under the condition that the water inlet temperature is greater than or equal to the preset temperature.

9. An air conditioner comprising an air conditioner and a controller in communication with the air conditioner, the air conditioner comprising a first valve, a second valve, an indoor heat exchanger, an outdoor heat exchanger, a pressure sensor, a flow sensor, and a plurality of filters, the indoor heat exchanger and the outdoor heat exchanger being connected in series, the outdoor heat exchanger and the water side economizer being connected in parallel, the first valve being for controlling a water source to enter the water side economizer, the second valve being for controlling a water source to enter the outdoor heat exchanger, the first valve, the pressure sensor, and the flow sensor being connected in series in sequence, a plurality of filters being connected in series in sequence and being mounted to a water inlet of the water side economizer, the air conditioner being for performing the method of any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that the computer-readable storage medium includes a stored program, wherein the program, when run, controls a device in which the computer-readable storage medium is located to execute the control method according to any one of claims 1 to 7.