CN112128892A - Air conditioning system and control method thereof - Google Patents
Air conditioning system and control method thereof Download PDFInfo
- Publication number
- CN112128892A CN112128892A CN202010950257.9A CN202010950257A CN112128892A CN 112128892 A CN112128892 A CN 112128892A CN 202010950257 A CN202010950257 A CN 202010950257A CN 112128892 A CN112128892 A CN 112128892A
- Authority
- CN
- China
- Prior art keywords
- water
- temperature
- conditioning system
- air conditioning
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
- F24F2005/0053—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground receiving heat-exchange fluid from a well
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
Abstract
The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioning system and a control method thereof. The invention aims to solve the problems that the existing water air conditioner cannot be automatically adjusted according to actual conditions and cannot reasonably utilize energy in the actual use of large bases requiring constant temperature, such as factories, production workshops, farms and the like. For this purpose, according to the air conditioning system and the control method thereof of the present invention, the water change line can be first conducted before the heating circulation line is conducted and when the condition that the water temperature of the water heater is less than the water temperature of the water well is satisfied. Therefore, before the air conditioning system heats, well water is used for replacing original low-temperature water in the air conditioning system along a water exchange pipeline formed among the water suction pump, the water replenishing pipe, the water return pipe, the water heater, the indoor heat exchanger and the water well in sequence, so that the heat energy in the underground water source is fully utilized, and the time and energy required by heating of the air conditioning system are saved.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioning system and a control method thereof.
Background
The water temperature of about 15 meters underground is usually kept at about 18 ℃, and the water temperature is relatively constant. In areas with sufficient water sources, water air conditioners (also called water-cooled air conditioners) can be used for circulating through underground water, water is pumped up by a water pump in summer and passes through an indoor fan coil to achieve the purpose of refrigeration, return water flows back to the underground through a pipeline, and the purpose of heating can be achieved through the circulation in winter.
Chinese patent document (CN2441068U) discloses a circulating well water air conditioner, which comprises a cabinet, a condenser and a fan, wherein the condenser is a water-cooled condenser, a water pump is connected to a water inlet pipe of the condenser, water valves are arranged on a water inlet pipe and a water outlet pipe of the condenser and are respectively connected to a water inlet main pipe and a water outlet main pipe, and the water inlet main pipe and the water outlet main pipe are inserted into a well. The water inlet pipe and the water outlet pipe of the condenser are connected with a water heating device in parallel, and water valves are arranged at two ends of the water heating device.
However, the conventional water air conditioner has problems that it cannot be automatically adjusted according to actual conditions and energy cannot be reasonably utilized in actual use of large-scale bases requiring constant temperature such as factories, production plants, and farms.
Accordingly, there is a need in the art for a new air conditioning system and a control method thereof to solve the above problems.
Disclosure of Invention
The invention provides an air conditioning system and a control method thereof, aiming at solving the problems that the existing water air conditioner cannot be automatically adjusted according to the actual situation and cannot reasonably utilize energy in the actual use of large bases requiring constant temperature in factories, production workshops, farms and the like.
Firstly, the air conditioning system provided by the invention comprises an indoor heat exchanger, a water heater and a water suction pump, wherein the water suction pump is used for pumping water in a water well; a refrigeration cycle pipeline, a heating cycle pipeline and a water changing pipeline are formed in the air conditioning system; on the refrigeration circulating pipeline, a water outlet of the water suction pump is communicated with a water inlet of the indoor heat exchanger through a water inlet pipe, and a water outlet of the indoor heat exchanger discharges water to a water well through a water outlet pipe; on the heating circulating pipeline, a water outlet of the water heater is communicated with a water inlet of the indoor heat exchanger through the water inlet pipe, and a water outlet of the indoor heat exchanger is communicated with a water inlet of the water heater through a water return pipe; on the water changing pipeline, a water outlet of the water suction pump is communicated with one end, close to the indoor heat exchanger, of the water return pipe through a water replenishing pipe, a water outlet of the water heater is communicated with a water inlet of the indoor heat exchanger through the water inlet pipe, and a water outlet of the indoor heat exchanger discharges water to a water well through a water outlet pipe; the controller of the air conditioning system is set to be capable of selectively conducting the refrigeration circulating pipeline or the heating circulating pipeline according to the comparison result of the indoor actual temperature and the indoor preset temperature; the controller of the air conditioning system is also set to be capable of switching on the water exchange pipeline before switching on the heating circulation pipeline and when the condition that the water temperature of the water heater is less than the water temperature of the water well is met.
As a preferable technical solution of the air conditioning system provided by the present invention, the water inlet pipe is selectively communicated with the water outlet of the water pump and the water outlet of the water heater through a first three-way reversing valve; a water outlet of the indoor heat exchanger is selectively communicated with the water outlet pipe or the water return pipe through a second three-way reversing valve; and a first on-off valve is arranged between the water outlet of the water suction pump and the first three-way reversing valve, and a second on-off valve is arranged on the water replenishing pipe.
As a preferable technical solution of the air conditioning system provided in the present invention, the indoor fan of the indoor heat exchanger is configured to adjust a rotation speed according to a difference between the indoor actual temperature and the indoor preset temperature.
As a preferable technical solution of the air conditioning system provided by the present invention, a circulating water pump of the air conditioning system is disposed on the water inlet pipe; and/or the water inlet pipe is also provided with a filter and/or a regulating valve; and/or the water heater is any one of a solar heating type, an electric heating type and a gas heating type.
As a preferable technical solution of the air conditioning system provided by the present invention, the first temperature detector of the air conditioning system is configured to obtain the water temperature of the water well; a second temperature detector of the air conditioning system is arranged to acquire the water temperature of the water heater; a third temperature detector of the air conditioning system is arranged to acquire an indoor actual temperature; a fourth temperature detector of the air conditioning system is arranged to obtain the temperature of the water at the outlet of the indoor heat exchanger.
Then, the invention also provides a control method of the air conditioning system, wherein the air conditioning system comprises an indoor heat exchanger, a water heater and a water pump; a refrigeration cycle pipeline, a heating cycle pipeline and a water changing pipeline are formed in the air conditioning system; on the refrigeration circulating pipeline, the water suction pump is used for sucking water in a well, a water outlet of the water suction pump is communicated with a water inlet of the indoor heat exchanger through a water inlet pipe, and a water outlet of the indoor heat exchanger discharges water to the well through a water outlet pipe; on the heating circulating pipeline, a water outlet of the water heater is communicated with a water inlet of the indoor heat exchanger through the water inlet pipe, and a water outlet of the inner heat exchanger is communicated with a water inlet of the water heater through a water return pipe; on the water changing pipeline, a water outlet of the water suction pump is communicated with one end, close to the indoor heat exchanger, of the water return pipe through a water replenishing pipe, a water outlet of the water heater is communicated with a water inlet of the indoor heat exchanger through the water inlet pipe, and a water outlet of the indoor heat exchanger discharges water to a water well through a water outlet pipe; the control method comprises the following steps: acquiring an indoor actual temperature; comparing the indoor actual temperature with an indoor preset temperature, and selectively conducting the refrigeration circulating pipeline or the heating circulating pipeline according to the comparison result; before the heating circulation pipeline is conducted, respectively acquiring the water temperature of the water heater and the water temperature of the water well; when the water temperature of the water heater is lower than that of the well, the water changing pipeline is firstly conducted.
As a preferable aspect of the control method of the air conditioning system according to the present invention, the step of selectively turning on the cooling circulation line or the heating circulation line according to the result of the comparison includes: when the indoor actual temperature is higher than the indoor preset temperature, the refrigeration cycle pipeline is conducted; and when the indoor actual temperature is lower than the indoor preset temperature, the heating circulating pipeline is conducted.
As a preferable aspect of the control method of the air conditioning system according to the present invention, the control method further includes, in addition to the step of "turning on the water change line": when the water temperature of the water heater is lower than that of the water well, the heating function of the water heater is turned off; and when the water temperature of the water heater is greater than or equal to the water temperature of the water well, starting the heating function of the water heater.
As a preferable aspect of the control method of the air conditioning system according to the present invention, after the step of "turning on the water change line", the control method further includes: acquiring the water temperature of a water outlet of the indoor heat exchanger; and when the water temperature of the water outlet of the indoor heat exchanger is greater than or equal to the water temperature of the water well, the heating circulating pipeline is conducted.
As a preferable technical solution of the control method of the air conditioning system provided by the present invention, the control method further includes: and when the refrigeration circulating pipeline or the heating circulating pipeline is conducted, adjusting the rotating speed of the water suction pump and/or the circulating water pump and the rotating speed of an indoor fan configured by the indoor heat exchanger according to the difference value between the indoor actual temperature and the indoor preset temperature.
According to the air conditioning system and the control method thereof, the water changing pipeline can be firstly conducted before the heating circulation pipeline is conducted and when the condition that the water temperature of the water heater is less than that of the water well is met. Therefore, before the air conditioning system heats, well water is used for replacing original low-temperature water in the air conditioning system along a water exchange pipeline formed among the water suction pump, the water replenishing pipe, the water return pipe, the water heater, the indoor heat exchanger and the water well in sequence, so that the heat energy in the underground water source is fully utilized, and the time and energy required by heating of the air conditioning system are saved.
In addition, according to the air conditioning system and the control method thereof of the present invention, when the water temperature of the water heater is greater than or equal to the water temperature of the water well while the step of turning on the water change line, the heating function of the water heater is started to heat the well water pumped by the water pump; with the discharge of water with lower temperature in the original air conditioning system, when the water temperature at the water outlet of the indoor heat exchanger is larger than or equal to the water temperature of the water well, the heating circulation pipeline is conducted. Therefore, the well water pumped by the water pumping pump can be heated in time while the water with lower temperature in the original air-conditioning system is discharged, so that the heating efficiency of the air-conditioning system is improved.
Drawings
An air conditioning system and a control method thereof of the present invention will be described with reference to the accompanying drawings. In the drawings:
fig. 1 is a schematic structural view of a refrigeration cycle line of the air conditioning system of the present embodiment;
fig. 2 is a schematic structural diagram of a heating cycle pipeline of the air conditioning system in the present embodiment;
FIG. 3 is a schematic structural view of a water exchange line of the air conditioning system of the present embodiment;
fig. 4 is a flowchart illustrating a control method of the air conditioning system according to this embodiment.
List of reference numerals
1-indoor heat exchanger; 2-a water heater; 3, a water pump;
41-a water inlet pipe; 42-a water outlet pipe; 43-a water return pipe; 44-water replenishing pipe;
51-a first three-way reversing valve; 52-a second three-way reversing valve; 53-first on-off valve; 54-a second on-off valve;
61-circulating water pump; 62-a filter; 63-regulating valve;
71-a first temperature detector; 72-a second temperature detector; 73-a third temperature detector; 74-a fourth temperature detector;
81-a first well; 82-second well.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the water inlet pipe in the drawings is selectively communicated with the water outlet of the water pump and the water outlet of the water heater through the first three-way reversing valve, and the water outlet of the indoor heat exchanger is selectively communicated with the water outlet pipe or the water return pipe through the second three-way reversing valve, the arrangement mode is not constant, and a person skilled in the art can adjust the water inlet pipe and the water outlet pipe as required to adapt to specific application occasions without departing from the principle of the invention. The water inlet pipe can be respectively communicated with the water outlet of the water suction pump and the water outlet of the water heater through two on-off valves, and the water outlet of the indoor heat exchanger can also be respectively selectively communicated with the water outlet pipe or the water return pipe through two on-off valves.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to solve the above problems in the prior art, that is, to solve the problems that the existing water air conditioner cannot be automatically adjusted according to actual conditions and cannot reasonably utilize energy in the actual use of large bases requiring constant temperature in factories, production workshops, farms, and the like, the present embodiment provides an air conditioning system and a control method thereof.
Firstly, the air conditioning system provided by the embodiment comprises an indoor heat exchanger 1, a water heater 2 and a water suction pump 3, wherein the water suction pump 3 is used for pumping water in a water well; the air conditioning system is formed with a refrigeration cycle pipeline, a heating cycle pipeline and a water exchange pipeline.
As shown in fig. 1, on the refrigeration cycle pipeline, the water outlet of the water pump 3 is communicated with the water inlet of the indoor heat exchanger 1 through a water inlet pipe 41, and the water outlet of the indoor heat exchanger 1 discharges water to the water well through a water outlet pipe 42.
As shown in fig. 2, on the heating circulation pipeline, the water outlet of the water heater 2 is communicated with the water inlet of the indoor heat exchanger 1 through a water inlet pipe 41, and the water outlet of the indoor heat exchanger 1 is communicated with the water inlet of the water heater 2 through a water return pipe 43.
As shown in fig. 3, on the water changing line, the water outlet of the water pump 3 is also communicated with one end of the water return pipe 43 close to the indoor heat exchanger 1 through a water replenishing pipe 44, the water outlet of the water heater 2 is communicated with the water inlet of the indoor heat exchanger 1 through a water inlet pipe 41, and the water outlet of the indoor heat exchanger 1 discharges water to the water well through a water outlet pipe 42.
A controller (not shown) of the air conditioning system is configured to selectively turn on the cooling circulation line or the heating circulation line according to a comparison result of an indoor actual temperature and an indoor preset temperature; the controller of the air conditioning system is also set to be capable of switching on the water changing pipeline before switching on the heating circulating pipeline and when the condition that the water temperature of the water heater 2 is less than that of the water well is met.
For example, the indoor heat exchanger 1 of the present embodiment may be a fin heat exchanger, a plate heat exchanger, or the like, and the indoor temperature is adjusted by exchanging heat between water inside the indoor heat exchanger and indoor air. Meanwhile, the indoor heat exchanger 1 is generally further provided with an indoor fan (not shown in the figure), and the indoor fan provided in the indoor heat exchanger 1 can be set to adjust the rotating speed according to the difference between the indoor actual temperature and the indoor preset temperature, that is, when the difference between the indoor actual temperature and the indoor preset temperature is large, the heating or cooling efficiency of the air conditioning system can be improved by increasing the wind speed of the indoor fan.
The water heater 2 of the present embodiment may be selected from any one of a solar heating type, an electric heating type, and a gas heating type. Of course, in the present embodiment, from the viewpoint of energy saving and environmental protection, the water heater 2 in the air conditioning system of the present embodiment may be preferentially selected as the solar heating type water heater 2.
In areas with sufficient water supply, groundwater may be constantly flowing, typically by pumping a well at the surface into the groundwater table, which may be understood as a hole that allows the suction pump 3 and the water pipe to be lowered. In order to prevent the water discharged from the water outlet pipe 42 from affecting the water temperature pumped by the water pump 3, it is preferable to communicate the water pump 3 and the water outlet pipe 42 with different wells spaced apart by a certain distance, such as the first well 81 and the second well 82 shown in fig. 1 to 3. Further, in order to make the air conditioning system have better heating or cooling effect, the water suction pump 3 may be disposed at the first water well 81 at the upstream of the water source, and the water outlet pipe 42 may be communicated with the second water well 82 at the downstream of the water source.
Although in fig. 1 to 3 of the present embodiment, the water inlet pipe 41 is selectively communicated with the water outlet of the water pump 3 and the water outlet of the water heater 2 through the first three-way reversing valve 51, and the water outlet of the indoor heat exchanger 1 is selectively communicated with the water outlet pipe 42 or the water return pipe 43 through the second three-way reversing valve 52, this arrangement is not a constant one, and those skilled in the art can adjust it as required to suit the specific application without departing from the principle of the present invention. The water inlet pipe 41 can be respectively communicated with the water outlet of the water pump 3 and the water outlet of the water heater 2 through two on-off valves, and the water outlet of the indoor heat exchanger 1 can also be respectively selectively communicated with the water outlet pipe 42 or the water return pipe 43 through two on-off valves.
As shown in fig. 1, the refrigeration cycle pipeline of this embodiment is a flow path line of water during refrigeration of the air conditioning system, at this time, the first three-way directional valve 51 conducts the water inlet pipe 41 line and the water outlet of the water pump 3, and at the same time, the second three-way directional valve 52 conducts the water outlet of the indoor heat exchanger 1 and the water outlet pipe 42; namely, the water flow path is as follows: the first water well 81 → the suction pump 3 → the water inlet pipe 41 → the indoor heat exchanger 1 → the water outlet pipe 42 → the second water well 82.
As shown in fig. 2, the heating circulation pipeline of this embodiment is a flow path line of water during heating of the air conditioning system, at this time, the first three-way reversing valve 51 conducts the line of the water inlet pipe 41 with the water outlet of the water heater 2, and at the same time, the second three-way reversing valve 52 conducts the water outlet of the indoor heat exchanger 1 with the water return pipe 43; namely, the water flow path is as follows: the water outlet of the water heater 2 → the water inlet pipe 41 → the indoor heat exchanger 1 → the water outlet pipe 42 → the water return pipe 43 → the water inlet of the water heater 2.
As shown in fig. 3, the water change line of this embodiment is a water flow line when the original water flow in the air conditioning system is completely replaced by water in the well water, at this time, the first three-way directional valve 51 conducts the water inlet pipe 41 line with the water outlet of the water pump 3, and at the same time, the second three-way directional valve 52 conducts the water outlet of the indoor heat exchanger 1 with the water outlet pipe 42; namely, the water flow path is as follows: the water suction pump 3 → the water replenishing pipe 44 → the water returning pipe 43 → the water inlet of the water heater 2 → the water inlet pipe 41 → the indoor heat exchanger 1 → the water outlet pipe 42 → the second water well 82.
Meanwhile, in this embodiment, a first on-off valve 53 may be further disposed between the water outlet of the water pump 3 and the first three-way reversing valve 51, and the first on-off valve 53 is used to control the on-off between the water pump 3 and the first three-way valve; the water replenishing pipe 44 may be provided with a second on-off valve 54, and the second on-off valve 54 may be used to control the water replenishing pipe 44 to be turned on when the water change line is turned on, and to be turned off when the water change line is turned off. The first on-off valve 53 and the second on-off valve 54 may be selected from solenoid valves and electric valves.
It is to be understood that in the present embodiment, only one of the refrigeration cycle line, the heating cycle line, and the refrigeration cycle line is turned on, and the others are turned off.
It can be understood that the controller in the air conditioning system of this embodiment can determine whether the air conditioning system needs to be adjusted to the heating mode or the cooling mode according to the comparison result between the indoor actual temperature and the indoor preset temperature, and then realize the switching control of the heating mode and the cooling mode of the air conditioning system by controlling the valves of the first three-way valve, the second three-way valve, and the like, and the machines of the water heater 2, the water pump 3, and the like in the air conditioning system. Here, the actual indoor temperature may be obtained by the third temperature detector 73 of the air conditioning system as shown in fig. 1 to 3, that is, the third temperature detector 73 of the air conditioning system is configured to obtain the actual indoor temperature.
Further, the controller in the air conditioning system of this embodiment can also switch on the water changing pipeline before switching on the heating circulation pipeline and when the condition that the water temperature of the water heater 2 is less than the water temperature of the well is satisfied. Wherein, the first temperature detector 71 of the air conditioning system is arranged to acquire the water temperature of the well, and the first temperature detector 71 can be directly arranged in the first well 81 or arranged on the water outlet of the water suction pump 3; a second temperature detector 72 of the air conditioning system is arranged to obtain the water temperature of the water heater 2.
According to the air conditioning system of the embodiment, the water change line can be first connected before the heating circulation line is connected and when the condition that the water temperature of the water heater 2 is lower than the water temperature of the well is satisfied. Therefore, before the air conditioning system heats, the well water replaces the original low-temperature water in the air conditioning system along the water exchange pipeline formed among the water suction pump 3, the water replenishing pipe 44, the water return pipe 43, the water heater 2, the indoor heat exchanger 1 and the water well in sequence, so that the heat energy in the underground water source is fully utilized, and the time and energy required by the air conditioning system for heating are saved.
As a preferred embodiment of the air conditioning system provided in this embodiment, a circulating water pump 61 of the air conditioning system is disposed on the water inlet pipe 41; and/or, the water inlet pipe 41 is also provided with a filter 62 and/or a regulating valve 63.
It is understood that the circulation water pump 61 may be used to power or increase the power of the flow of water in the corresponding line when the cooling circulation line, the heating circulation line, and the water change line are conducted. The filter 62 arranged on the water inlet pipe 41 is used for filtering water before entering the indoor heat exchanger 1, and in addition, another filter 62 can be arranged between the water suction pump 3 and the first three-way reversing valve 51 to filter well water pumped into the air conditioning system, so that the problems of blockage of pipelines in the air conditioning system, damage to various machines and the like are avoided.
The flow rate of water in the air conditioning system can be adjusted through the adjusting valve 63 arranged on the water inlet pipe 41, so that the purpose of adjusting the heating or cooling efficiency of the air conditioning system is achieved.
In addition, according to the air conditioning system of the embodiment, when the water changing pipeline is conducted and the water temperature of the water heater 2 is greater than or equal to that of the water well, the heating function of the water heater 2 is started to heat the well water pumped by the water suction pump 3; along with the discharge of water with lower temperature in the original air conditioning system, when the water temperature at the water outlet of the indoor heat exchanger 1 is larger than or equal to the water temperature of the water well, the heating circulation pipeline is conducted. Therefore, the well water pumped by the water pump 3 can be heated in time while the water with lower temperature in the original air-conditioning system is discharged, so that the heating efficiency of the air-conditioning system is improved. Wherein the fourth temperature detector 74 of the air conditioning system is arranged to obtain the water temperature at the water outlet of the indoor heat exchanger 1.
Of course, the above alternative embodiments, and the alternative embodiments and the preferred embodiments can also be used in a cross-matching manner, so that a new embodiment is combined to be suitable for a more specific application scenario.
Then, the embodiment further provides a control method of an air conditioning system, as shown in fig. 1 to 3, the air conditioning system includes an indoor heat exchanger 1, a water heater 2, and a water pump 3; a refrigeration cycle pipeline, a heating cycle pipeline and a water changing pipeline are formed in the air conditioning system; on the refrigeration circulating pipeline, the water suction pump 3 is used for sucking water in a well, the water outlet of the water suction pump 3 is communicated with the water inlet of the indoor heat exchanger 1 through a water inlet pipe 41, and the water outlet of the indoor heat exchanger 1 discharges water to the well through a water outlet pipe 42; on the heating circulating pipeline, a water outlet of the water heater 2 is communicated with a water inlet of the indoor heat exchanger 1 through a water inlet pipe 41, and a water outlet of the inner heat exchanger is communicated with a water inlet of the water heater 2 through a water return pipe 43; on the water changing pipeline, the water outlet of the water suction pump 3 is also communicated with one end of a water return pipe 43 close to the indoor heat exchanger 1 through a water replenishing pipe 44, the water outlet of the water heater 2 is communicated with the water inlet of the indoor heat exchanger 1 through a water inlet pipe 41, and the water outlet of the indoor heat exchanger 1 discharges water to a water well through a water outlet pipe 42; as shown in fig. 4, the control method includes:
s1, acquiring the actual indoor temperature;
s2, comparing the indoor actual temperature with the indoor preset temperature, and selectively conducting a refrigeration circulating pipeline or a heating circulating pipeline according to the comparison result;
s221, respectively acquiring the water temperature of the water heater 2 and the water temperature of the water well before the heating circulating pipeline is conducted;
s222, when the water temperature of the water heater 2 is lower than that of the well, the water changing pipeline is firstly conducted. It can be understood that when the water temperature of the water heater 2 is greater than or equal to the water temperature of the water well, the heating circulation pipeline can be directly conducted.
According to the control method of the air conditioning system of the embodiment, the water change pipeline can be firstly conducted before the heating circulation pipeline is conducted and when the condition that the water temperature of the water heater 2 is less than the water temperature of the water well is met. Therefore, before the air conditioning system heats, the well water replaces the original low-temperature water in the air conditioning system along the water exchange pipeline formed among the water suction pump 3, the water replenishing pipe 44, the water return pipe 43, the water heater 2, the indoor heat exchanger 1 and the water well in sequence, so that the heat energy in the underground water source is fully utilized, and the time and energy required by the air conditioning system for heating are saved.
As a preferable implementation of the control method of the air conditioning system provided by the present embodiment, the step of "selectively turning on the cooling circulation line or the heating circulation line according to the result of the comparison" in the step S2 includes:
s21, when the actual indoor temperature is higher than the preset indoor temperature, the refrigeration cycle pipeline is conducted;
and S22, when the indoor actual temperature is lower than the indoor preset temperature, conducting the heating circulation pipeline.
Therefore, the automatic control of the refrigeration mode and the heating mode of the air conditioning system is realized by comparing the indoor actual temperature with the indoor preset temperature.
It can be understood that when the actual indoor temperature is equal to the preset indoor temperature, the air conditioning system does not need to perform cooling or heating, but the indoor fan can be turned on as required to promote the circulation of the indoor air.
As a preferred implementation of the control method of the air conditioning system provided in this embodiment, the control method further includes, at the same time as the step of "turning on the water change line":
s2231, when the water temperature of the water heater 2 is lower than that of the water well, the heating function of the water heater 2 is turned off;
and S2232, when the water temperature of the water heater 2 is greater than or equal to the water temperature of the water well, starting the heating function of the water heater 2.
It can be understood that, when the well water from the first well 81 replaces the water in the water return pipe 43 and the water heater 2 of the original air conditioning system, the water temperature of the water heater 2 is theoretically equal to the water temperature of the well, and then the well water pumped into the air conditioning system can be heated within the shortest time after the heating function of the water heater 2 is started, so as to ensure the subsequent heating efficiency of the air conditioning system. Before the well water from the first water well 81 replaces the water in the water return pipe 43 and the water heater 2 in the original air conditioning system, the heating function of the water heater 2 can be turned off for the electric heating type water heater 2 or the gas type water heater 2, so as to save energy. However, as the solar water heater 2 does not consume energy by itself, the opening and closing thereof may not be particularly limited.
As a preferred implementation of the control method of the air conditioning system provided in this embodiment, after the step of "turning on the water change line", the control method further includes:
s224, acquiring the water temperature of a water outlet of the indoor heat exchanger 1;
and S22, when the water temperature at the water outlet of the indoor heat exchanger 1 is larger than or equal to the water temperature of the water well, the heating circulation pipeline is conducted.
It can be understood that, when the water temperature at the water outlet of the indoor heat exchanger 1 is greater than or equal to the water temperature of the water well, it indicates that the well water in the first water well 81 has replaced all the water in the original air conditioning system, at this time, the water exchange pipeline may be cut off, the heating circulation pipeline may be turned on, and the water pump 3 may also be stopped.
According to the control method of the air conditioning system, when the water temperature of the water heater 2 is larger than or equal to the water temperature of the water well, the heating function of the water heater 2 is started to heat the well water pumped by the water pump 3 while the step of conducting the water changing pipeline is carried out; along with the discharge of water with lower temperature in the original air conditioning system, when the water temperature at the water outlet of the indoor heat exchanger 1 is larger than or equal to the water temperature of the water well, the heating circulation pipeline is conducted. Therefore, the well water pumped by the water pump 3 can be heated in time while the water with lower temperature in the original air-conditioning system is discharged, so that the heating efficiency of the air-conditioning system is improved.
As a preferable implementation of the control method of the air conditioning system provided in this embodiment, the control method further includes: when the refrigeration circulating pipeline or the heating circulating pipeline is conducted, the rotating speed of the water suction pump 3 and/or the circulating water pump 61 and the rotating speed of an indoor fan configured on the indoor heat exchanger 1 are adjusted according to the difference value between the indoor actual temperature and the indoor preset temperature.
For example, in the cooling or heating process, if the difference between the actual indoor temperature and the preset indoor temperature is large, the flow rate of water in the air conditioning system may be increased by increasing the rotation speed of the water suction pump 3 and the water circulation pump 61, so as to improve the cooling or heating efficiency. Meanwhile, the efficiency of refrigeration or heating can be improved by increasing the rotating speed of the indoor fan.
It should be noted that although the detailed steps of the method of the present invention have been described in detail, those skilled in the art can combine, separate and change the order of the above steps without departing from the basic principle of the present invention, and the modified technical solution does not change the basic concept of the present invention and thus falls into the protection scope of the present invention.
For example, the water temperature at the water outlet of the indoor heat exchanger 1 in step S224, the water temperature of the water heater 2 in step S221, and the water temperature of the water well may be acquired at the same time, or step S221 may be executed first and then step S224 may be executed.
It should be understood by those skilled in the art that the control method of the air conditioning system provided in the present embodiment may be stored as a program in a computer-readable storage medium. The storage medium includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to perform some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims of the present invention, any of the claimed embodiments may be used in any combination.
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. The air conditioning system is characterized by comprising an indoor heat exchanger, a water heater and a water suction pump, wherein the water suction pump is used for pumping water in a water well; a refrigeration cycle pipeline, a heating cycle pipeline and a water changing pipeline are formed in the air conditioning system;
on the refrigeration circulating pipeline, a water outlet of the water suction pump is communicated with a water inlet of the indoor heat exchanger through a water inlet pipe, and a water outlet of the indoor heat exchanger discharges water to a water well through a water outlet pipe;
on the heating circulating pipeline, a water outlet of the water heater is communicated with a water inlet of the indoor heat exchanger through the water inlet pipe, and a water outlet of the indoor heat exchanger is communicated with a water inlet of the water heater through a water return pipe;
on the water changing pipeline, a water outlet of the water suction pump is communicated with one end, close to the indoor heat exchanger, of the water return pipe through a water replenishing pipe, a water outlet of the water heater is communicated with a water inlet of the indoor heat exchanger through the water inlet pipe, and a water outlet of the indoor heat exchanger discharges water to a water well through a water outlet pipe;
the controller of the air conditioning system is set to be capable of selectively conducting the refrigeration circulating pipeline or the heating circulating pipeline according to the comparison result of the indoor actual temperature and the indoor preset temperature;
the controller of the air conditioning system is also set to be capable of switching on the water exchange pipeline before switching on the heating circulation pipeline and when the condition that the water temperature of the water heater is less than the water temperature of the water well is met.
2. The air conditioning system as claimed in claim 1, wherein the water inlet pipe is selectively communicated with the water outlet of the suction pump and the water outlet of the water heater through a first three-way reversing valve;
a water outlet of the indoor heat exchanger is selectively communicated with the water outlet pipe or the water return pipe through a second three-way reversing valve;
and a first on-off valve is arranged between the water outlet of the water suction pump and the first three-way reversing valve, and a second on-off valve is arranged on the water replenishing pipe.
3. An air conditioning system according to claim 1, wherein the indoor fan of the indoor heat exchanger arrangement is arranged to adjust the rotational speed in dependence on the difference between the indoor actual temperature and the indoor preset temperature.
4. The air conditioning system as claimed in claim 1, wherein a circulating water pump of the air conditioning system is provided on the water inlet pipe; and/or the like and/or,
the water inlet pipe is also provided with a filter and/or an adjusting valve; and/or the like and/or,
the water heater is any one of a solar heating type, an electric heating type and a gas heating type.
5. The air conditioning system of claim 1,
a first temperature detector of the air conditioning system is arranged to acquire the water temperature of the water well;
a second temperature detector of the air conditioning system is arranged to acquire the water temperature of the water heater;
a third temperature detector of the air conditioning system is arranged to acquire an indoor actual temperature;
a fourth temperature detector of the air conditioning system is arranged to obtain the temperature of the water at the outlet of the indoor heat exchanger.
6. The control method of the air conditioning system is characterized in that the air conditioning system comprises an indoor heat exchanger, a water heater and a water pump; a refrigeration cycle pipeline, a heating cycle pipeline and a water changing pipeline are formed in the air conditioning system;
on the refrigeration circulating pipeline, the water suction pump is used for sucking water in a well, a water outlet of the water suction pump is communicated with a water inlet of the indoor heat exchanger through a water inlet pipe, and a water outlet of the indoor heat exchanger discharges water to the well through a water outlet pipe;
on the heating circulating pipeline, a water outlet of the water heater is communicated with a water inlet of the indoor heat exchanger through the water inlet pipe, and a water outlet of the indoor heat exchanger is communicated with a water inlet of the water heater through a water return pipe;
on the water changing pipeline, a water outlet of the water suction pump is communicated with one end, close to the indoor heat exchanger, of the water return pipe through a water replenishing pipe, a water outlet of the water heater is communicated with a water inlet of the indoor heat exchanger through the water inlet pipe, and a water outlet of the indoor heat exchanger discharges water to a water well through a water outlet pipe;
the control method comprises the following steps:
acquiring an indoor actual temperature;
comparing the indoor actual temperature with an indoor preset temperature, and selectively conducting the refrigeration circulating pipeline or the heating circulating pipeline according to the comparison result;
before the heating circulation pipeline is conducted, respectively acquiring the water temperature of the water heater and the water temperature of the water well;
when the water temperature of the water heater is lower than that of the well, the water changing pipeline is firstly conducted.
7. The control method according to claim 6, wherein the step of selectively turning on the cooling circulation line or the heating circulation line according to the result of the comparison includes:
when the indoor actual temperature is higher than the indoor preset temperature, the refrigeration cycle pipeline is conducted;
and when the indoor actual temperature is lower than the indoor preset temperature, the heating circulating pipeline is conducted.
8. The control method according to claim 6, wherein, simultaneously with the step of turning on the water change line, the control method further comprises:
and when the water temperature of the water heater is greater than or equal to the water temperature of the water well, starting the heating function of the water heater.
9. The control method according to claim 8, wherein after the step of turning on the water change line, the control method further comprises:
acquiring the water temperature of a water outlet of the indoor heat exchanger;
and when the water temperature of the water outlet of the indoor heat exchanger is greater than or equal to the water temperature of the water well, the heating circulating pipeline is conducted.
10. The control method according to claim 8, characterized by further comprising:
and when the refrigeration circulating pipeline or the heating circulating pipeline is conducted, adjusting the rotating speed of the water suction pump and/or the circulating water pump and the rotating speed of an indoor fan configured by the indoor heat exchanger according to the difference value between the indoor actual temperature and the indoor preset temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010950257.9A CN112128892B (en) | 2020-09-11 | 2020-09-11 | Air conditioning system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010950257.9A CN112128892B (en) | 2020-09-11 | 2020-09-11 | Air conditioning system and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112128892A true CN112128892A (en) | 2020-12-25 |
| CN112128892B CN112128892B (en) | 2022-06-14 |
Family
ID=73845496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010950257.9A Active CN112128892B (en) | 2020-09-11 | 2020-09-11 | Air conditioning system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112128892B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915724A (en) * | 2021-11-24 | 2022-01-11 | 宁波奥克斯电气股份有限公司 | Control device of air conditioner, air conditioner and control method of air conditioner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655267A (en) * | 2008-08-21 | 2010-02-24 | 杨志刚 | Refrigerating/heating device for underground water supply and drainage |
| CN107228436A (en) * | 2017-06-13 | 2017-10-03 | 武汉科技大学 | A kind of air-conditioning system cold with ground based on solar energy |
-
2020
- 2020-09-11 CN CN202010950257.9A patent/CN112128892B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655267A (en) * | 2008-08-21 | 2010-02-24 | 杨志刚 | Refrigerating/heating device for underground water supply and drainage |
| CN107228436A (en) * | 2017-06-13 | 2017-10-03 | 武汉科技大学 | A kind of air-conditioning system cold with ground based on solar energy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915724A (en) * | 2021-11-24 | 2022-01-11 | 宁波奥克斯电气股份有限公司 | Control device of air conditioner, air conditioner and control method of air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112128892B (en) | 2022-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206695309U (en) | A kind of fluorine pump natural cooling evaporating type condensing cooling-water machine | |
| CN102679482B (en) | Heat recovery multiplex system based on variable-frequency air conditioner and control method thereof | |
| CN102410629B (en) | Air source heat pump water heater system and operation control method thereof | |
| CN106322812A (en) | Cold-and-hot water unit | |
| CN103175276A (en) | Air-cooling direct-current frequency-conversion magnetic levitation nature cold source water chilling unit | |
| CN100470151C (en) | Air-conditioning water heater used in four seasons | |
| CN105890225A (en) | Partial heat recovery type air conditioner cold hot water and life hot water joint supply system | |
| CN112128892B (en) | Air conditioning system and control method thereof | |
| CN104613667A (en) | Combined air-conditioning system as well as control method thereof | |
| CN102434930A (en) | Water-cooled air conditioner dehumidifier with heat recycling function and running method thereof | |
| CN102721172A (en) | Compressor variable capacity regulated instant heat pump water heater | |
| CN202470558U (en) | Front external auxiliary heating anti-frosting device | |
| CN2847158Y (en) | Water heater of air conditioner | |
| CN201488141U (en) | Heap pump type energy saving integral air conditioner | |
| CN103557633B (en) | A kind of air source low-temperature trilogy supply heat-pump hot-water unit and implementation method thereof | |
| CN114543390B (en) | Cooling water loop structure of gas heat pump and control method thereof | |
| CN102353179B (en) | Air-conditioning hot-water system | |
| CN201344588Y (en) | Heat pump hot water unit capable of reliably supplying water | |
| CN203798008U (en) | Variable-frequency multifunctional water heater | |
| CN101220986B (en) | Cooling capacity recovering method of air source heat pump hot water units | |
| CN106322827A (en) | Terrestrial heat utilization method based on industrial waste water source | |
| CN104344600A (en) | Integrated multi-functional comfort system | |
| CN204285677U (en) | Heat recovery system | |
| CN203132025U (en) | Base station room air conditioner | |
| CN203011003U (en) | Air source heat pump hot water air conditioning unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220429 Address after: No.1 Gangcheng South Road, Jiangbei District, Chongqing, 400026 Applicant after: CHONGQING HAIER AIR-CONDITIONER Co.,Ltd. Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant after: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant before: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. Applicant before: Haier Zhijia Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |