CN111649417A - Air conditioner with water heater function and control method - Google Patents

Air conditioner with water heater function and control method Download PDF

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Publication number
CN111649417A
CN111649417A CN202010446871.1A CN202010446871A CN111649417A CN 111649417 A CN111649417 A CN 111649417A CN 202010446871 A CN202010446871 A CN 202010446871A CN 111649417 A CN111649417 A CN 111649417A
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China
Prior art keywords
temperature
water
water heater
air conditioner
compressor
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Pending
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CN202010446871.1A
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Chinese (zh)
Inventor
陈伟
王啸娟
袁前
颜景旭
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
Original Assignee
Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Publication date
Application filed by Aux Air Conditioning Co Ltd, Ningbo Aux Electric Co Ltd filed Critical Aux Air Conditioning Co Ltd
Priority to CN202010446871.1A priority Critical patent/CN111649417A/en
Publication of CN111649417A publication Critical patent/CN111649417A/en
Pending legal-status Critical Current

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    • 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
    • F24F5/0096—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 combined with domestic apparatus
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • 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
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • F24F11/84—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 using valves
    • 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
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • 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
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12—Hot water central heating systems using heat pumps

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner with a water heater function and a control method, and relates to the technical field of air conditioners, wherein the air conditioner comprises an air conditioner circulating system and a water heater heat exchange module; the air conditioner circulating system comprises a compressor, a four-way valve, an indoor heat exchanger and an outdoor heat exchanger, wherein the compressor is sequentially communicated with the indoor heat exchanger and the outdoor heat exchanger through the four-way valve to form a refrigerating loop or a heating loop; the air outlet of the compressor is communicated with the four-way valve through a first exhaust pipeline, and a secondary compression module connected with part of pipelines of the first exhaust pipeline in parallel is communicated with the first exhaust pipeline; a refrigerant inlet of the water heater heat exchange module is communicated with the first exhaust pipeline, and the position of the refrigerant inlet is positioned in a pipeline between a refrigerant outlet of the secondary compression module and the four-way valve; a refrigerant outlet of the water heater heat exchange module is communicated with a pipeline between the outdoor heat exchanger and the indoor heat exchanger; when the air conditioner is used, the air conditioner provides heating heat for the water heater by utilizing high-temperature exhaust of the compressor under different running states, and the temperature of the water heater is adjusted.

Description

Air conditioner with water heater function and control method
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner with a water heater function and a control method.
Background
The water heater used by the current user is mainly an electric water heater, and comprises a water storage type electric water heater and an instant electric water heater, wherein the water storage type electric water heater needs to be preheated in advance before being used, the waiting time is long, the continuous electrification and heat preservation are needed subsequently, and the power consumption is large; the instant electric water heater can continuously provide hot water without limit of hot water quantity, but has high power and still causes larger power consumption.
The prior referenced Chinese patent application with publication number CN110296520A discloses an instant heating, water storage, heating and control method and device for air-conditioning refrigeration and water heater, wherein a first valve and a second valve are arranged to respectively form an air-conditioning refrigeration loop and a water heater heating loop, but the design and control logic of the invention has the following defects:
for the water storage heating control of the water heater, the use scene of a user is not considered, if the user continuously starts the air conditioner when using the water heater, the compressor needs to continuously operate no matter whether the air conditioner is started, and the service life of the compressor is influenced by the continuous operation.
For the instant heating, water storage and heating control, the electric heating device of the water heater is still needed.
In the process of matching with the air conditioner for use, the capacity of the air conditioner is possibly reduced, and the air conditioner cannot meet the requirement of the user on cooling capacity; especially, the air conditioner has low energy efficiency in winter, the temperature in a room is slowly raised, and the heating capacity of the air conditioner is insufficient when the air conditioner is used for heating by a water heater.
When the air conditioner is operated in different modes, such as the air conditioner is operated in a silent gear or in a no-wind mode, the exhaust temperature of the compressor is relatively low, and the compressor cannot provide enough heat for the water heater to reach the temperature set by a user.
Disclosure of Invention
In order to solve the problems, the invention discloses an air conditioner with the function of a water heater and a control method.
According to an aspect of an embodiment of the present invention, there is provided an air conditioner having a water heater function, characterized in that: the system comprises an air conditioner circulating system and a water heater heat exchange module; the air conditioner circulating system comprises a compressor, a four-way valve, an indoor heat exchanger and an outdoor heat exchanger, wherein the compressor is sequentially communicated with the indoor heat exchanger and the outdoor heat exchanger through the four-way valve to form a refrigerating loop or a heating loop; the air outlet of the compressor is communicated with the four-way valve through a first exhaust pipeline, and a secondary compression module connected with part of pipelines of the first exhaust pipeline in parallel is communicated with the first exhaust pipeline; a refrigerant inlet of the heat exchange module of the water heater is communicated with the first exhaust pipeline, and the position of the refrigerant inlet is positioned in a pipeline between a refrigerant outlet of the secondary compression module and the four-way valve; and a refrigerant outlet of the water heater heat exchange module is communicated with a pipeline between the outdoor heat exchanger and the indoor heat exchanger.
By adopting the technical scheme, the compressor and the secondary compression module are arranged, and the heat exchange module of the water heater is added on the basis of the self circulation system of the air conditioner, so that the heating effect is provided for the water heater; the air conditioner and the water heater can be matched with each other for use, when the air conditioner runs, the compressor outputs a refrigerant with higher temperature, part of the refrigerant is used for a circulating system of the air conditioner, part of the refrigerant enters the water heater to heat water in the water heater, and the air conditioner and the water heater can be subjected to compensation heating through the arranged secondary compression module, so that the high-temperature exhaust of the compressor can be used for providing heating heat for the water heater when the air conditioner runs in a refrigeration or heating mode; the energy efficiency of the air conditioner is guaranteed, and meanwhile the use requirement of the water heater is met.
Preferably, the heat exchange module of the water heater comprises a water tank and an inner coil pipe positioned in the water tank; and a refrigerant inlet of the inner coil pipe is communicated with the first exhaust pipeline, and a refrigerant outlet of the inner coil pipe is communicated with a pipeline between the outdoor heat exchanger and the indoor heat exchanger.
Preferably, the inner coil is communicated with the first exhaust duct through a first bypass duct; and a first control valve for controlling the connection or disconnection of the first bypass pipeline is arranged on the first bypass pipeline.
By adopting the technical scheme, when the water heater is not used, the first control valve can be selectively closed, and when the water heater is used, the flow value of fluid in the bypass pipe can be adjusted by adjusting the opening degree of the first control valve, so that the water temperature of the water heater can be adjusted.
Preferably, the secondary compression module comprises a compression assembly for compressing the refrigerant; the air inlet of the compression assembly is communicated with the first exhaust pipeline through an air collecting pipeline; a third control valve for controlling the connection or disconnection of the gas collecting pipeline is arranged on the gas collecting pipeline; the air outlet of the compression assembly is communicated with the first exhaust pipeline through a second exhaust pipeline; and a second control valve used for controlling the connection or disconnection of the first exhaust pipeline is arranged on the first exhaust pipeline, and the second control valve is positioned in a pipeline between the air inlet of the air collecting pipeline and the air outlet of the second exhaust pipeline.
Through adopting above-mentioned technical scheme, through setting up second control valve and third control valve, when the air conditioner was in the mode of refrigerating, the compressor worked alone. In the use process, the compressor independently supplies heat to the air conditioner and the water heater, and in the process, the refrigerant passes through the water heater, and the hot water tank is equivalent to a heat exchanger to perform auxiliary refrigeration on the refrigerant. When the air conditioner is in the heating mode, the air conditioner needs certain heat to maintain indoor temperature, at the moment, heat supply to the air conditioner can be increased by opening the secondary compression module, air supply to the water heater can be realized, and the water heater is heated while the heating effect of the air conditioner is met. The air conditioner can still meet the heating effect of the water heater in the heating mode. The compressor/secondary compression module is equivalent to an electric heating device in the water heater, so that the water heater is prevented from being heated by the electric heating device, and the use is safer.
Preferably, one end of the indoor heat exchanger is communicated with the four-way valve through a first connecting pipeline, and the other end of the indoor heat exchanger is communicated with the outdoor heat exchanger through a middle communicating pipeline; the inner coil is communicated with the middle communicating pipeline through a second bypass pipeline.
Preferably, a first throttling element is arranged on the middle communication pipeline, and a second throttling element is arranged on the second bypass pipeline.
Through adopting above-mentioned technical scheme, through the first throttling element and the second throttling element that set up, can suitably adjust the flow on middle intercommunication pipeline and the second bypass pipeline.
According to another aspect of the embodiments of the present invention, there is provided a control method of an air conditioner with a water heater function, applied to the air conditioner with a water heater function described above, including the steps of: acquiring the running state of the air conditioner, and heating the heat exchange module of the water heater according to the running state of the air conditioner; wherein the operating state comprises an off state and an on state; and detecting the actual temperature of the water in the water tank in each operating state, and controlling the flow value of the first bypass pipeline based on the comparison result of the actual temperature of the water in the water tank in each operating state and the preset temperature.
By adopting the technical scheme, the water heater circulating system is added on the basis of the air conditioner self circulating system to provide heating heat for the water heater; when the air conditioner and the water heater are used, according to the running state of the air conditioner, when the air conditioner runs in a refrigerating or heating mode, the high-temperature exhaust gas of the compressor or the secondary compression module can be used for providing heating heat for the water heater. Meanwhile, the flow value of the first bypass pipeline is adjusted according to the actual temperature of water in the water tank, and accurate control of the water temperature is achieved.
Preferably, the step of heating the heat exchange module of the water heater according to the operation state of the air conditioner includes: when the running state is the closing state, triggering the compressor to supply air to the water heater heat exchange module; when the running state is the starting state and the air conditioner is in a non-heating mode, triggering the compressor to supply air to the air conditioner circulating system and the water heater heat exchange module; when the running state is an open state and the air conditioner is in a heating mode, if the water heater is in a closed state, the compressor is triggered to supply air to the air conditioner circulating system; and if the water heater is in an opening state, triggering the compressor and the secondary compression module to be both opened, and supplying air to the water heater heat exchange module and the air conditioner circulating system.
Preferably, the water heater is a water storage type water heater, the step of detecting an actual temperature of water in the water tank in each of the operation states, and controlling the flow value of the first bypass pipe based on a comparison result between the actual temperature of water in the water tank in each of the operation states and a preset temperature includes: when the running state is the closed state, detecting the actual temperature of water in the water tank to obtain a first water temperature, and controlling the running state of the compressor based on the comparison result of the first water temperature and the preset temperature; when the running state is an opening state, detecting the exhaust temperature of the refrigerant discharged by the compressor, comparing the exhaust temperature with a preset exhaust temperature, and controlling the frequency of the compressor and the opening and closing state of the first control valve based on the comparison result of the exhaust temperature and the preset exhaust temperature; and when the first control valve is in an open state, detecting the actual temperature of water in the water tank to obtain a second water temperature, and controlling the opening degree of the first control valve to control the flow value based on the comparison result of the second water temperature and the preset temperature.
By adopting the technical scheme, when the running state of the air conditioner is the closing state, whether the compressor is started or not can be judged according to the actual temperature and the set temperature. On the premise of ensuring the stability of the water temperature in the water heater, the compressor is prevented from continuously working, and the service life of the compressor is ensured to a certain extent.
When the air conditioner is in an open state, if the temperature of the refrigerant discharged by the compressor does not reach the temperature for heating the water heater, the frequency of the compressor can be properly increased, so that the temperature of the refrigerant discharged by the compressor is controlled, and the temperature for heating the water heater can be met.
When reaching water heater heating temperature, first control valve will be in the open mode in order to carry out the air feed heating to the water heater, and at the air feed in-process, through the actual temperature of the water in the water tank with predetermine the flow value of temperature contrast result control bypass pipe, the realization is to the accurate control of temperature in the water tank.
Preferably, the controlling the frequency of the compressor and the opening/closing state of the first control valve based on the comparison result between the exhaust temperature and the preset exhaust temperature includes: when the exhaust temperature is higher than the preset exhaust temperature, opening a first control valve; and when the exhaust temperature is less than or equal to the preset exhaust temperature, controlling the frequency of the compressor, and opening the first control valve after the exhaust temperature is equal to the exhaust temperature.
Through adopting above-mentioned technical scheme, through detecting exhaust temperature, when exhaust temperature is greater than predetermineeing exhaust temperature, can directly supply heat to the water heater, when exhaust temperature is less than predetermineeing exhaust temperature, increase compressor frequency improves exhaust temperature for exhaust temperature heats the water heater once more after reaching predetermineeing exhaust temperature.
Preferably, the controlling of the opening degree of the first control valve to control the flow rate value based on the comparison result of the second water temperature and the preset temperature includes: when the difference between the second water temperature and the preset temperature is larger than a first threshold value, controlling the opening degree of the first control valve to a first degree; when the difference between the second water temperature and the preset temperature is larger than a second threshold value and smaller than a first threshold value, controlling the opening degree of the first control valve to a second degree; when the difference between the second water temperature and the preset temperature is greater than a third threshold and less than a second threshold, controlling the opening degree of the first control valve to a third degree; when the difference between the second water temperature and the preset temperature is smaller than a third threshold value, controlling the opening degree of the first control valve to a fourth degree; when the second water temperature reaches the preset temperature, controlling the first control valve to be closed; when the difference between the second water temperature and the preset temperature is larger than a third threshold value, controlling the first control valve to be opened; wherein the first degree is greater than the second degree and greater than the third degree and greater than the fourth degree, and the first threshold is greater than the second threshold and greater than the third threshold.
Through adopting above-mentioned technical scheme, be used for realizing the accurate control of temperature through the first control valve that sets up, according to the actual temperature of the water in the water tank and the degree of openness that the temperature regulation first control valve was preset to the user to change the flow value, make the hydroenergy in the water tank reach the temperature range of setting for fast in, simultaneously, make the temperature keep in the temperature range of setting for.
Preferably, the step of controlling the operation state of the compressor based on the comparison result of the first water temperature and the preset temperature includes: when the first water temperature is lower than the preset temperature, controlling the compressor to work, and when the running time of the compressor is higher than a preset time period threshold value, if the difference between the preset temperature and the first water temperature is higher than a fourth threshold value, starting the compressor; and if the difference between the preset temperature and the first water temperature is smaller than a fourth threshold value, closing the compressor.
Through adopting above-mentioned technical scheme, when the air conditioner was closed, at this moment, the compressor heated the water heater alone for the water heater keeps to predetermineeing the temperature, after lasting operation preset time quantum threshold value, through whether being less than the fourth threshold value according to predetermineeing the difference of temperature and first temperature, selects the compressor to close or open, has avoided the compressor to continuously open, has protected the compressor to a certain extent, avoids it to reduce life because of continuously opening.
Preferably, when the water heater is an instantaneous water heater, the step of detecting the actual temperature of the water in the water tank in each of the operating states and controlling the flow value of the first bypass pipe based on a comparison result between the actual temperature of the water in the water tank in each of the operating states and a preset temperature includes: when the instant water heater is detected to be in a use state, increasing the frequency of the compressor and reducing the rotating speed of an inner fan of the air conditioner until the water temperature in the water tank reaches the temperature set by a user; detecting the actual temperature of the water in the water tank to obtain a third water temperature, and controlling the opening degree of the first control valve to control the flow value based on the comparison result of the third water temperature and the preset temperature.
By adopting the technical scheme, when the water heater uses the instant water heater, the working frequency of the compressor is improved, the rotating speed of the inner fan is reduced, and when the water heater is opened, the water temperature can reach the set temperature quickly.
In summary, the present invention has the following technical effects:
1. through setting up compressor and secondary compression module, when air supply to air conditioner circulation system, can supply air to water heater heat transfer module. The air conditioner and the water heater can be matched with each other for use, and the heating effect on the water heater is met while the operation energy efficiency of the air conditioner is ensured.
2. The high-temperature exhaust of the compressor is utilized to provide heating heat for the water heater, the capacity requirement of the air conditioner is not influenced, and the accurate control of the water temperature in the water heater is realized by adjusting the opening degree of the control valve.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a schematic view showing an overall structure of an air conditioner having a water heater function according to the present invention;
FIG. 2 is a schematic view of an air conditioner with a water heater function in a heating mode according to the present invention;
FIG. 3 is a schematic diagram showing a four-way valve connected in a burst heating mode in an air conditioner with a water heater function according to the present invention;
FIG. 4 is a schematic diagram illustrating the flow of refrigerant in the protruded cooling mode of the air conditioner with water heater function according to the present invention;
FIG. 5 is a schematic view of a secondary compression module protruding from an air conditioner with a water heater function according to the present invention;
FIG. 6 is a schematic diagram illustrating the flow of refrigerant in the heating mode of the air conditioner with water heater function according to the present invention;
FIG. 7 is a flowchart illustrating a method for controlling an air conditioner having a water heater function according to the present invention;
FIG. 8 is a logic diagram of a control method of an air conditioner having a water heater function according to the present invention;
fig. 9 is a flowchart illustrating a control method of an air conditioner with a water heater function according to the present invention when the air conditioner is turned off;
fig. 10 is a logic diagram of an air conditioner with a water heater function according to a control method of the air conditioner with a water heater function when the air conditioner is turned off;
FIG. 11 is a flowchart illustrating a method for controlling an air conditioner with a water heater according to the present invention when the air conditioner is turned on;
fig. 12 is a logic diagram for adjusting the compressor power when the air conditioner is turned on in the control method of the air conditioner with water heater function of the present invention;
fig. 13 is a logic diagram for adjusting a first control valve when an air conditioner is turned on in a control method of an air conditioner with a water heater function according to the present invention;
fig. 14 is a logic diagram of a control method of an air conditioner with a water heater function according to the present invention when the water heater is an instantaneous water heater.
Description of the reference numerals
100. An air conditioner circulation system; 110. a compressor; 111. a first exhaust duct; 112. a return air duct; 120. a four-way valve; 121. a first valve port; 122. a second valve port; 123. a third valve port; 124. a fourth valve port; 130. an indoor heat exchanger; 131. a first connecting pipe; 140. an outdoor heat exchanger; 141. a second connecting pipe; 150. the middle is communicated with the pipeline; 160. a first throttling element; 170. a second control valve; 180. a secondary compression module; 181. a compression assembly; 182. a gas collection conduit; 183. a second exhaust conduit; 184. a third control valve;
200. a water heater heat exchange module; 210. a water tank; 220. an inner coil pipe; 230. a first bypass conduit; 240. a first control valve; 250. a second bypass conduit; 260. a second throttling element.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
The present embodiment provides an air conditioner with a water heater function, as shown in fig. 1 to 2, including an air conditioner circulation system 100 and a water heater heat exchange module 200; the air conditioner circulating system 100 can drive the water heater heat exchange module 200 to work while meeting the working requirement of the air conditioner, so that the requirement of a user on the air conditioner can be met, and the requirement of the user on using the water heater can be met.
The air conditioner circulation system 100 includes a compressor 110, a four-way valve 120, an indoor heat exchanger 130, and an outdoor heat exchanger 140.
The compressor 110 is connected to the indoor heat exchanger 130 and the outdoor heat exchanger 140 in sequence through the four-way valve 120 to form a cooling circuit or a heating circuit. An air outlet of the compressor 110 is communicated with the four-way valve 120 through a first exhaust duct 111. A refrigerant inlet of the compressor 110 is communicated with the four-way valve 120 through a return air duct 112.
One end of the indoor heat exchanger 130 is communicated with the four-way valve 120 through a first connecting pipeline 131, and the other end is communicated with the outdoor heat exchanger 140 through an intermediate communicating pipeline 150; the other end of the outdoor heat exchanger 140 is connected to the four-way valve 120 through a second connection pipe 141.
Referring to fig. 2 and 3, in particular, the four-way valve 120 includes four ports, namely a first port 121, a second port 122, a third port 123 and a fourth port 124, wherein when the four-way valve 120 is powered off, the first port 121 is communicated with the fourth port 124, and the second port 122 is communicated with the third port 123; when the four-way valve 120 is energized, the first port 121 and the second port 122 are communicated, and the third port 123 and the fourth port 124 are communicated.
The first exhaust pipe 111 is communicated with the first valve port 121, and the return pipe 112 is communicated with the third valve port 123; the first connection pipe communicates with the first port 121, and the second connection pipe 141 communicates with the fourth port 124.
When the air conditioner is in the cooling mode, the four-way valve 120 is powered off, and when the air conditioner is in the heating mode, the four-way valve 120 is powered on.
As shown in fig. 4, in the cooling mode of the air conditioner, the refrigerant flows as follows: the refrigerant is compressed by the compressor 110, sequentially passes through the four-way valve 120, the outdoor heat exchanger 140, and the indoor heat exchanger 130, and then returns to the compressor 110 through the four-way valve 120.
As shown in fig. 6, in the heating mode of the air conditioner, the refrigerant flows as follows: the refrigerant is compressed by the compressor 110, sequentially passes through the four-way valve 120, the indoor heat exchanger 130, and the outdoor heat exchanger 140, and then returns to the compressor 110 through the four-way valve 120.
A refrigerant inlet of the water heater heat exchange module 200 is communicated with the first exhaust pipeline 111, and is positioned in a pipeline between a refrigerant outlet of the secondary compression module 180 and the four-way valve 120; the refrigerant outlet of the water heater heat exchange module 200 is communicated with the pipeline between the outdoor heat exchanger 140 and the indoor heat exchanger 130.
Specifically, the water heater heat exchange module 200 includes a water tank 210 and an inner coil 220 located in the water tank 210; in use, the inner coil 220 heats the water in the tank 210.
A refrigerant inlet of the inner coil 220 is connected to the first exhaust duct 111, and a refrigerant outlet of the inner coil 220 is connected to a duct between the outdoor heat exchanger 140 and the indoor heat exchanger 130.
The inner coil 220 is communicated with the first exhaust pipe 111 through a first bypass pipe 230; a first control valve 240 for controlling the connection or disconnection of the first bypass line 230 is provided in the first bypass line 230. The inner coil 220 is in communication with the intermediate communication conduit 150 via a second bypass conduit 250.
When the compressor 110 operates, the compressed refrigerant has a relatively high temperature, a portion of the refrigerant enters the outdoor heat exchanger 140 through the first exhaust pipe 111, and another portion of the refrigerant may enter the interior of the inner coil 220 through the first bypass pipe 230 to heat the water in the water tank 210.
During use, the bypass pipe is controlled to be connected or disconnected by the first control valve 240, or the opening degree of the first control valve 240 is controlled, thereby controlling the temperature of water inside the water tank 210. The first control valve 240 selects the flow valve to use. When the water heater is not used, the first control valve 240 is closed, and when the water heater is used, the flow rate in the first bypass pipeline 230 can be adjusted through the flow valve, so that the flow rate value of the refrigerant entering the inner coil 220 is adjusted. Here, the use at this time means that the water heater is required to heat the water inside the water tank 210.
It should be noted that the diameter of the first bypass pipe 230 is set smaller than the diameter of the first exhaust pipe 111, and specifically, the diameter of the first bypass pipe 230 may be one half of the diameter of the first exhaust pipe 111. By setting the diameter of the first bypass duct 230 to be relatively smaller than the diameter of the first exhaust duct 111, when in use, the water in the water tank 210 is heated while the influence on the refrigerant circulation of the air conditioner itself is reduced.
The specific flow direction of the refrigerant after entering from the first bypass pipe 230 is as follows: a part of the refrigerant in the first exhaust duct 111 enters the first bypass duct 230, and then enters the inner coil 220 to heat the water in the water tank 210, and then the refrigerant after heat exchange enters the intermediate communication duct 150 through the second bypass duct 250, joins the refrigerant in the intermediate communication duct 150, and is discharged into the indoor heat exchanger 130 or the outdoor heat exchanger 140.
When the air conditioner is in a cooling state, a part of the refrigerant discharged from the compressor 110 is cooled by the outdoor heat exchanger 140, and the other part of the refrigerant is cooled by the water heater, which is equivalent to a water-cooled condenser, so that the water inside the water heater can be heated, and the refrigerant discharged from the indoor heat exchanger 130 can be cooled to a certain extent. The air conditioner is favorable for circulating refrigeration, meanwhile, when the water in the water tank 210 is heated, the water heater is prevented from being heated by electric energy, the hot air flow of the air conditioner is reasonably utilized, and when the hot air flow heats the water heater, the temperature of the hot air flow is reduced, so that complementary effects are achieved.
A first throttle element 160 is arranged on the intermediate communication line 150, wherein the first throttle element 160 may be a capillary tube or an electronic expansion valve. A second throttling element 260 is provided in the second bypass conduit 250, the second throttling element 260 being selected as an electronic expansion valve. Wherein the connection point of the second bypass conduit 250 to the intermediate communication conduit 150 is located on the conduit between the first throttling element 160 and the indoor heat exchanger 130. During operation, the first throttling element 160 and the second throttling element 260 are adjusted, so that the refrigerant entering the indoor heat exchanger 130 is balanced, and thus, heat exchange with the indoor air is better performed.
When the air conditioner is used, the outlet pressure of the evaporator of the air conditioner and the suction superheat degree of the compressor are detected, the outlet pressure of the evaporator of the air conditioner and the suction superheat degree of the compressor are respectively transmitted to an air conditioner controller by a pressure sensor and a temperature sensor, after the controller processes signals, if the first throttling element 160 is a capillary tube, the controller outputs instructions to act on the second throttling element 260 in the water heater loop, and if the first throttling element 160 is an electronic expansion valve, the controller respectively outputs instructions to act on the first throttling element 160 in the air conditioner circulation loop and the second throttling element 260 in the water heater loop, so that the valves of the first throttling element 160 and the second throttling element 260 are stepped to required positions.
When the air conditioner is in operation, the air conditioner has different operation modes, such as the cooling mode, the heating mode, the mute mode, the no-wind mode, and the like. When the air conditioner operates in the heating mode, the outdoor temperature is relatively low, and the air conditioner is low in energy efficiency, and at this time, if the compressor 110 is used to supply heat to the water heater, the air conditioner may not meet the heating requirement. In order to solve the above problem, a secondary compression module 180 connected in parallel with a part of the exhaust duct is connected to the exhaust duct. The heating requirement of the air conditioner is met by the supplementary heating of the secondary compression module 180.
As shown in fig. 5 and 6, in detail, the secondary compression module 180 includes a compression assembly 181 for compressing the refrigerant. The air inlet of the compression component 181 is communicated with the first exhaust pipeline 111 through the air collecting pipeline 182; a third control valve 184 for controlling the connection or disconnection of the gas collecting pipeline 182 is arranged on the gas collecting pipeline 182; the air outlet of the compression component 181 is communicated with the first exhaust pipeline 111 through the second exhaust pipeline 183; a second control valve 170 for controlling the connection or disconnection of the first exhaust duct 111 is arranged on the first exhaust duct 111, and the second control valve 170 is positioned in a duct between the air inlet of the air collecting duct 182 and the air outlet of the second exhaust duct 183.
When the air conditioner is in the cooling mode, the second control valve 170 is opened and the third control valve 184 is closed, and at this time, the compressor 110 is operated alone. When the air conditioner is in the heating mode, the second control valve 170 is closed, the third control valve 184 is opened, and at this time, the compression assembly 181 compresses the refrigerant for the second time.
When the air conditioner works in the heating mode, the compressor 110 compresses and heats the refrigerant of the indoor heat exchanger 130 for the first time, the compressed and heated refrigerant enters the first exhaust pipeline 111, the refrigerant in the first exhaust pipeline 111 enters the compression assembly 181 through the gas collecting pipeline 182 for the second compression and heating, the compressed and heated refrigerant enters the first exhaust pipeline 111 again through the second exhaust pipeline 183, and the refrigerant in the first exhaust pipeline 111 is heated and warmed to a certain degree. Therefore, the air conditioner can meet the self requirement in the heating mode and heat the heater at the same time.
In summary, the working process of the air conditioner with the water heater function is as follows:
when the water heater is not in use or the air conditioner is operated in a cooling mode, the first control valve 240, the second control valve 170 are opened, and the third control valve 184 is closed.
When the water heater is used alone without using an air conditioner, a portion of the refrigerant compressed by the compressor 110 enters the first bypass pipe 230 to heat the water heater, then enters the indoor heat exchanger 130 through the second bypass pipe 250, and finally returns to the compressor 110, thereby forming a cycle period.
When the air conditioner is in a non-heating mode, such as a cooling mode, and the water heater is used at the same time, the first control valve 240 and the second control valve 170 are opened, the third control valve 184 is closed, the refrigerant is discharged into the first exhaust pipe 111 by the compressor 110, a part of the refrigerant in the first exhaust pipe 111 enters the first bypass pipe 230 to heat the water heater, the other part of the refrigerant enters the four-way valve 120 through the first exhaust pipe 111, and the refrigerant entering the water heater joins the refrigerant in the intermediate communication pipe 150 through the second exhaust pipe 183 and enters the indoor heat exchanger 130 again. The refrigerant introduced into the indoor heat exchanger 130 is returned to the compressor 110 again through heat exchange.
When the air conditioner is in a heating mode and the water heater is used, the first control valve 240 and the third control valve 184 are opened, and the second control valve 170 is closed; after the refrigerant is discharged into the first exhaust pipe 111 by the compressor 110, and compressed by the secondary compression module 180, a portion of the refrigerant enters the first bypass pipe 230 to heat the water heater. One portion enters four-way valve 120. The both are merged in the intermediate communication pipe 150, and then enter the outdoor heat exchanger 140, and finally return to the compressor 110.
Wherein, the real-time detection of the water temperature is realized by adding a temperature sensor.
The present embodiment further provides a method for controlling an air conditioner with a water heater function, as shown in fig. 6 to 7, including the following steps:
acquiring the running state of the air conditioner, and heating the water heater heat exchange module 200 according to the running state of the air conditioner; the operation state comprises an off state and an on state.
When the running state is the closing state, triggering the compressor 110 to supply air to the water heater heat exchange module 200; that is, when the air conditioner is not operated, the compressor 110 is operated alone to heat the water in the water tank 210. The mode of supplying heat by the compressor 110 alone replaces the mode of heating by an electric heating device arranged inside the water tank 210 to a certain extent.
When the operation state is the on state and the air conditioner is in the non-heating mode, the compressor 110 is triggered to supply air to the outdoor heat exchanger 140 and the water heater heat exchange module 200; in the non-heating mode, the operation state of the air conditioner includes a cooling mode, a mute mode, a no-wind mode, or the like.
When the running state is the opening state and the air conditioner is in the heating mode, if the water heater is in the closing state, the compressor 110 is triggered to supply air to the air conditioner circulating system 100; if the water heater is in the on state, the compressor 110 and the secondary compression module 180 are both triggered to be turned on, and air is supplied to the water heater heat exchange module 200 and the air conditioner circulation system 100.
When the air conditioner heats the mode, the general external environment temperature is relatively low, the energy efficiency of the air conditioner is low, and when the water heater heat exchange module 200 needs to be heated, the air is supplied to the water heater heat exchange module 200 through the secondary compression module 180 for auxiliary heating on the premise of ensuring the heating effect of the air conditioner.
The specific purpose of the gas supply is as follows: the water heater heat exchange module 200 is heated to provide power for the air conditioner circulation system 100 to exchange heat in a heating or cooling mode.
The water heater described above includes an off state and an on state, where the off state and the on state refer to whether water in the water tank 210 is heated, the off state refers to not heating water in the water tank 210, and the on state refers to heating water in the water tank 210.
When the water heater is not an instant heating type water heater, namely a common water storage type water heater is used.
The actual temperature of the water in the water tank 210 in each of the operation states is detected, and the flow rate value of the first bypass pipe 230 is controlled based on the comparison result of the actual temperature of the water in the water tank 210 in each of the operation states with the preset temperature. The method comprises the following specific steps:
as shown in fig. 8 to 9, the first substep: when the operation state is the closed state, the actual temperature of the water in the water tank 210 is detected to obtain a first water temperature TPractice 1Based on the first water temperature and the preset temperature TPreset ofControls the operation state of the compressor 110; the method comprises the following specific steps:
when the first water temperature TPractice 1Less than a predetermined temperature TPreset ofWhen the operation time of the compressor 110 is greater than the preset time threshold value deltat, if the preset temperature T is greater than the preset time threshold value deltatPreset ofWith a first water temperature TPractice 1When the difference is greater than the fourth threshold Δ T4, the compressor 110 is turned on; if the preset temperature T isPreset ofWith a first water temperature TPractice 1When the difference is less than the fourth threshold Δ T4, the compressor 110 is turned off.
Continuously detecting the first water temperature T after turning off the compressor 110Practice 1When the preset temperature T isPreset ofWith a first water temperature TPractice 1When the difference is again greater than the fourth threshold Δ T4, the compressor 110 is again turned on. Wherein, the value of the fourth threshold value can be between 10 ℃ and 15 ℃. The preset time period threshold value deltat ranges between 10 hours and 15 hours.
When the water heater is continuously started, the water in the water heater can be preheated through the compressor 110, and after the water is heated to a certain temperature, the compressor 110 can be turned off, so that the compressor 110 is prevented from continuously running. The compressor 110 can be shut down while the heating requirement of the water heater is met, and the service life of the compressor 110 is prevented from being influenced.
As shown in fig. 10 and 11, the second substep: when the operation state is the on state, the exhaust temperature T of the refrigerant discharged from the compressor 110 is detectedpAnd the exhaust temperature T is adjustedpAnd a predetermined exhaust temperature TmComparing based on the exhaust temperature TpAnd a predetermined exhaust temperature TmThe comparison result of (3) controls the frequency of the compressor 110 and the open/close state of the first control valve 240.
Specifically, the method comprises the following steps: when exhaust temperature TpGreater than a predetermined exhaust temperature TmThe first control valve 240 is opened if the exhaust temperature TpLess than a predetermined exhaust temperature TmIncreasing the compressor 110 frequency. By adjusting the frequency of the compressor 110, the discharge temperature of the compressor 110 can satisfy the temperature for heating the water heater.
At the same time, when the exhaust temperature TpEqual to the preset exhaust temperature TmThe first control valve 240 is directly opened.
Specific examples, e.g. when TpWhen the temperature is more than 50 ℃, the first control valve 240 is directly opened, and when T is higher thanpWhen the temperature is less than 50 ℃, the frequency of the compressor 110 is controlled so that the first control valve 240 is opened after the discharge temperature reaches 50 ℃.
As shown in fig. 12, substep three: when the first control valve 240 is in the open state, the actual temperature of the water in the water tank 210 is detected to obtain the second water temperature TPractice 2Based on the second water temperature TPractice 2And a preset temperature TPreset ofAs a result of the comparison, the opening degree of the first control valve 240 is controlled to control the flow rate value of the bypass pipe.
Specifically, the method comprises the following steps: when the second water temperature T is reachedPractice 2And a predetermined temperature TPreset ofThe difference is greater than the first threshold Δ T1, the degree of opening of the first control valve 240 is controlled to a first degree K1.
When the second water temperature T is reachedPractice 2And a predetermined temperature TPreset ofThe difference is greater than the second threshold Δ T2 and less than the first threshold Δ T1, the degree of opening of the first control valve 240 is controlled to a second degree K2.
When the second water temperature T is reachedPractice 2And a predetermined temperature TPreset ofThe difference is greater than that ofThe third threshold Δ T3 and less than the second threshold Δ T2 control the degree of opening of the first control valve 240 to a third degree K3.
When the second water temperature T is reachedPractice 2And a predetermined temperature TPreset ofThe difference is less than the third threshold Δ T3, the degree of opening of the first control valve 240 is controlled to a fourth degree K4.
When the second water temperature T is reachedPractice 2Reaches a preset temperature TPreset ofThe first control valve 240 is controlled to close.
When the second water temperature T is reachedPractice 2And a predetermined temperature TPreset ofWhen the difference is greater than the third threshold Δ T3, the first control valve 240 is controlled to reopen. And repeatedly judges the second water temperature TPractice 2And a preset temperature TPreset ofAnd controls the opening degree of the first control valve 240 based on the comparison result to control the flow rate value of the bypass pipe.
The first degree is greater than the second degree and greater than the third degree and greater than the fourth degree, and the first threshold is greater than the second threshold and greater than the third threshold.
The value range of the first threshold is more than or equal to 20 ℃; the value range of the second threshold is between 10 ℃ and 20 ℃; the third threshold value ranges from 10 ℃ to 3 ℃.
The first degree is between 100% open and 81% open of the first control valve 240; the second degree is between 80% open and 61% open; the third opening degree is between 60% and 51%; the fourth opening is between 50% and 40% opening.
It should be noted that, the detecting of the second water temperature may be continuously detecting the water temperature, or detecting the water temperature every time a certain time period is set, which is not limited herein.
In the above-described step of adjusting the opening degree of the first control valve 240, at each stage, when the exhaust temperature T ispThe regulating quantity is less than the exhaust temperature T when the temperature is more than 50 DEG CpEquivalent to the adjustment at 50 ℃.
As shown in fig. 13, when the water heater is an instantaneous water heater, the step of detecting the actual temperature of the water in the water tank 210 in each operation state and controlling the flow value of the bypass pipe based on the comparison result between the actual temperature of the water in the water tank 210 in each operation state and the preset temperature includes the following steps:
when the water heater is detected to be in a use state, judging whether the state of the water heater is started or not; when the water heater is in a closed state, the compressor 110 operates at a normal frequency, and the internal fan operates at a normal operating speed; when the water heater is in a use state, the following steps are operated: the method comprises the following steps:
the first substep: the frequency of the compressor 110 is increased and the rotation speed of the inner fan of the air conditioner is decreased until the temperature of the water in the water tank 210 reaches the user-set temperature. The first control valve 240 is operated at 100% open. Through the arrangement, when the instantaneous water heater is used, water can be rapidly heated to the set temperature. One embodiment is as follows: the working frequency of the compressor 110 is increased by 10%, and the rotating speed of the fan in the air conditioner is reduced by 20%.
And a second substep: when the actual temperature reaches the temperature set by the user, the operating frequency of the compressor 110 is restored to the normal frequency, and the rotating speed of the inner fan is restored to the normal operating rotating speed.
And a third substep: detecting the actual temperature of the water in the tank 210 to obtain a third water temperature TFact 3The opening degree of the first control valve 240 is controlled to control the flow rate value based on the comparison result of the third water temperature and the preset temperature. The specific adjustment mode is the same as that of a common water storage type water heater, and is not described herein.
In the above, the water heater is in a use state, specifically, a state in which the user turns on the water heater.
According to the invention, the compressor 110 and the secondary compression module 180 are adopted, and the water heater heat exchange module 200 is added on the basis of the air conditioner circulating system 100 to provide a heating effect for the water heater; the air conditioner and the water heater can be matched with each other for use, when the air conditioner runs, the compressor 110 generates a refrigerant with higher temperature, part of the refrigerant is used for air conditioner circulating heat exchange, part of the refrigerant enters the water heater to heat water in the water heater, and the air conditioner and the water heater can be compensated and heated through the arranged secondary compression module 180, so that the air conditioner can utilize high-temperature exhaust gas of the air conditioner compressor 110 to provide heating heat for the water heater when the air conditioner runs in a refrigerating or heating mode; the heating effect of the water heater is met while the operation energy efficiency of the air conditioner is guaranteed.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, and a communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The embodiments and features of the embodiments of the present invention may be combined with each other without conflict. In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (13)

1. The utility model provides an air conditioner with water heater function which characterized in that: the system comprises an air conditioner circulating system (100) and a water heater heat exchange module (200);
the air conditioner circulation system (100) comprises a compressor (110), a four-way valve (120), an indoor heat exchanger (130) and an outdoor heat exchanger (140),
the compressor (110) is sequentially communicated with the indoor heat exchanger (130) and the outdoor heat exchanger (140) through the four-way valve (120) to form a refrigerating loop or a heating loop;
the air outlet of the compressor (110) is communicated with the four-way valve (120) through a first exhaust pipeline (111), and a secondary compression module (180) which is connected with a part of pipelines of the first exhaust pipeline (111) in parallel is communicated with the first exhaust pipeline (111);
a refrigerant inlet of the water heater heat exchange module (200) is communicated with the first exhaust pipeline (111), and is positioned in a pipeline between a refrigerant outlet of the secondary compression module (180) and the four-way valve (120);
and a refrigerant outlet of the water heater heat exchange module (200) is communicated with a pipeline between the outdoor heat exchanger (140) and the indoor heat exchanger (130).
2. The air conditioner with a water heater function as claimed in claim 1, wherein:
the water heater heat exchange module (200) comprises a water tank (210) and an inner coil (220) positioned in the water tank (210);
the refrigerant inlet of the inner coil (220) is communicated with the first exhaust pipeline (111), and the refrigerant outlet of the inner coil (220) is communicated with a pipeline between the outdoor heat exchanger (140) and the indoor heat exchanger (130).
3. The air conditioner having a water heater function as claimed in claim 2, wherein:
the inner coil (220) is communicated with the first exhaust pipeline (111) through a first bypass pipeline (230); a first control valve (240) for controlling the connection or disconnection of the first bypass pipeline (230) is arranged on the first bypass pipeline (230).
4. The air conditioner with water heater function as claimed in claim 3, wherein:
the secondary compression module (180) comprises a compression component (181) for compressing a refrigerant; the air inlet of the compression component (181) is communicated with the first exhaust pipeline (111) through an air collecting pipeline (182);
a third control valve (184) used for controlling the connection or disconnection of the gas collecting pipeline (182) is arranged on the gas collecting pipeline (182);
the air outlet of the compression component (181) is communicated with the first exhaust pipeline (111) through a second exhaust pipeline (183);
and a second control valve (170) used for controlling the connection or disconnection of the first exhaust pipeline (111) is arranged on the first exhaust pipeline (111), and the second control valve (170) is positioned in a pipeline between the air inlet of the air collecting pipeline (182) and the air outlet of the second exhaust pipeline (183).
5. An air conditioner having a water heater function according to any one of claims 2 to 4, characterized in that:
one end of the indoor heat exchanger (130) is communicated with the four-way valve (120) through a first connecting pipeline (131), and the other end of the indoor heat exchanger is communicated with the outdoor heat exchanger (140) through a middle communicating pipeline (150);
the inner coil (220) is communicated with the intermediate communication pipeline (150) through a second bypass pipeline (250).
6. The air conditioner having a water heater function as claimed in claim 5, wherein:
a first throttling element (160) is arranged on the middle communication pipeline (150), and a second throttling element (260) is arranged on the second bypass pipeline (250).
7. A control method of an air conditioner with a water heater function, applied to the air conditioner with a water heater function of any one of claims 1 to 6, characterized in that: the method comprises the following steps:
acquiring the running state of the air conditioner, and heating the heat exchange module (200) of the water heater according to the running state of the air conditioner; wherein the operating state comprises an off state and an on state;
detecting the actual temperature of the water in the water tank (210) in each operating state, and controlling the flow value of the first bypass pipeline (230) based on the comparison result of the actual temperature of the water in the water tank (210) in each operating state and the preset temperature.
8. An air conditioner controlling method having a water heater function according to claim 7, characterized in that:
the step of heating the water heater heat exchange module (200) according to the running state of the air conditioner comprises the following steps:
when the running state is the closing state, triggering the compressor (110) to supply air to the water heater heat exchange module (200);
when the running state is the starting state and the air conditioner is in a non-heating mode, triggering the compressor (110) to supply air to the air conditioner circulating system (100) and the water heater heat exchange module (200);
when the running state is an open state and the air conditioner is in a heating mode, if the water heater is in a closed state, the compressor (110) is triggered to supply air to the air conditioner circulating system (100);
if the water heater is in the opening state, the compressor (110) and the secondary compression module (180) are triggered to be opened, and air is supplied to the water heater heat exchange module (200) and the air conditioner circulating system (100).
9. An air conditioner controlling method having a water heater function according to claim 8, characterized in that:
the water heater is a water storage type water heater,
the step of detecting an actual temperature of water in the water tank (210) in each of the operation states, and controlling a flow value of the first bypass pipe (230) based on a comparison result of the actual temperature of water in the water tank (210) in each of the operation states with a preset temperature includes:
when the operation state is a closed state, detecting the actual temperature of water in the water tank (210) to obtain a first water temperature, and controlling the operation state of the compressor (110) based on the comparison result of the first water temperature and the preset temperature;
when the running state is an opening state, detecting the exhaust temperature of the refrigerant discharged by the compressor (110), comparing the exhaust temperature with a preset exhaust temperature, and controlling the frequency of the compressor (110) and the opening and closing state of the first control valve (240) based on the comparison result of the exhaust temperature and the preset exhaust temperature;
when the first control valve (240) is in an open state, detecting the actual temperature of water in the water tank (210) to obtain a second water temperature, and controlling the opening degree of the first control valve (240) based on the comparison result of the second water temperature and the preset temperature to control the flow value.
10. An air conditioner controlling method having a water heater function according to claim 9, characterized in that:
the step of controlling the frequency of the compressor (110) and the open/close state of the first control valve (240) based on the comparison result of the exhaust temperature and the preset exhaust temperature includes:
opening a first control valve (240) when the exhaust temperature is greater than the preset exhaust temperature;
and when the exhaust temperature is less than or equal to the preset exhaust temperature, controlling the frequency of the compressor (110), and opening the first control valve (240) after the exhaust temperature is equal to the exhaust temperature.
11. An air conditioner controlling method having a water heater function according to claim 9, characterized in that:
the controlling of the opening degree of the first control valve (240) to control the flow rate value based on the comparison result of the second water temperature and the preset temperature includes:
controlling the opening degree of the first control valve (240) to a first degree when the difference between the second water temperature and the preset temperature is greater than a first threshold value;
controlling the opening degree of the first control valve (240) to a second degree when the difference between the second water temperature and the preset temperature is greater than a second threshold and less than a first threshold;
controlling the opening degree of the first control valve (240) to a third degree when the difference between the second water temperature and the preset temperature is greater than a third threshold and less than a second threshold;
controlling the opening degree of the first control valve (240) to a fourth degree when the difference between the second water temperature and the preset temperature is less than a third threshold;
controlling the first control valve (240) to close when the second water temperature reaches the preset temperature;
when the difference between the second water temperature and the preset temperature is larger than a third threshold value, controlling the first control valve (240) to be opened;
wherein the first degree is greater than the second degree and greater than the third degree and greater than the fourth degree, and the first threshold is greater than the second threshold and greater than the third threshold.
12. An air conditioner controlling method having a water heater function according to claim 9, characterized in that:
the step of controlling the operation state of the compressor (110) based on the comparison result of the first water temperature and the preset temperature includes:
when the first water temperature is lower than the preset temperature, controlling the compressor (110) to work,
when the compressor (110) run time is greater than a preset time period threshold,
if the difference between the preset temperature and the first water temperature is larger than a fourth threshold value, starting the compressor (110); and if the difference between the preset temperature and the first water temperature is less than a fourth threshold value, turning off the compressor (110).
13. An air conditioner controlling method having a water heater function according to claim 7, characterized in that:
when the water heater is an instantaneous type water heater,
the step of detecting an actual temperature of water in the water tank (210) in each of the operation states, and controlling a flow value of the first bypass pipe (230) based on a comparison result of the actual temperature of water in the water tank (210) in each of the operation states with a preset temperature includes:
when the instant water heater is detected to be in a use state, increasing the frequency of the compressor (110) and reducing the rotating speed of an internal fan of the air conditioner until the water temperature in the water tank (210) reaches the temperature set by a user;
detecting an actual temperature of water in the water tank (210) to obtain a third water temperature, and controlling an opening degree of a first control valve (240) to control the flow rate value based on a comparison result of the third water temperature and the preset temperature.
CN202010446871.1A 2020-05-25 2020-05-25 Air conditioner with water heater function and control method Pending CN111649417A (en)

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CN114992730A (en) * 2022-05-09 2022-09-02 乐歌人体工学科技股份有限公司 Office table heating system

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Application publication date: 20200911