CN113339949A - Multi-split system - Google Patents
Multi-split system Download PDFInfo
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- CN113339949A CN113339949A CN202110594633.XA CN202110594633A CN113339949A CN 113339949 A CN113339949 A CN 113339949A CN 202110594633 A CN202110594633 A CN 202110594633A CN 113339949 A CN113339949 A CN 113339949A
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- module
- outdoor unit
- water
- water module
- control module
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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
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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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
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
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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
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- 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
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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
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a multi-split system, comprising: an outdoor unit having an outdoor unit control module and a compressor; the indoor unit is connected with the outdoor unit through a refrigerant pipeline; a water module having one or more, the water module having a water module control unit communicatively connected with the outdoor unit; further comprising: and the water module state detection module is used for detecting the power failure state of the water module and sending a detection signal to the outdoor unit control module, and the outdoor unit control module controls the start and stop of the compressor according to the detection signal. According to the multi-split system, the water module state detection module is arranged and used for detecting the power failure state of the water module and sending a detection signal to the outdoor unit control module, and the outdoor unit control module directly controls the starting and stopping of the compressor according to the detection signal. The water in the water module can be prevented from being cooled and frozen in a short time, and the water module is protected.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a multi-split system.
Background
In many places which can not heat in a centralized way, more and more users use the multi-split air conditioning system to refrigerate in summer and heat in winter, and along with the expansion of the market of the water machine, more and more users select a ground heating water system to heat. The multi-split air conditioner that currently possesses the function of warming up is more complete than day water ground water two antithetical couplet confession function, possesses certain advantage, and the travelling comfort that warms up is accepted by market gradually, and the advantage of day fluorine ground water is prominent gradually, and the comfortable cold and warm demand of high-end house requires joinable water module to realize warming up.
When the multi-split air conditioner with the floor heating function is connected with the water modules to achieve the floor heating function, in the running process of the system, if the water modules are suddenly powered off, the outdoor unit cannot immediately react, the water modules and the whole system are extremely easy to freeze in a short time, and huge loss is caused to users. Therefore, when the water module is powered off, the outdoor unit can quickly perform linkage reaction, the whole system is stopped, the flowing of refrigerants in the system can be avoided, and the risk of freezing damage to the water module and the system is greatly reduced.
Disclosure of Invention
In order to solve the problem that a multi-split system with a water module in the prior art cannot respond in time when the water module is suddenly powered off, so that the water module and the whole system are frozen, the invention provides the multi-split system which is used for controlling the shutdown of a compressor and ensuring the safety of the water module by detecting the power-off state of the water module and directly sending a detection signal to an outdoor unit control module.
In order to achieve the purpose, the invention adopts the following technical scheme:
the present invention provides a multi-split system, comprising:
an outdoor unit having an outdoor unit control module and a compressor;
the indoor unit is connected with the outdoor unit through a refrigerant pipeline;
a water module having one or more, the water module having a water module control unit communicatively connected with the outdoor unit;
further comprising:
and the water module state detection module is used for detecting the power failure state of the water module and sending a detection signal to the outdoor unit control module, and the outdoor unit control module controls the start and stop of the compressor according to the detection signal.
Furthermore, when any water module is powered off, the outdoor unit control module controls the compressor to stop.
Further, the water module state detection module includes:
the detection switches are arranged in one-to-one correspondence with the water modules respectively, the on-off states of the detection switches are controlled by the corresponding water module control units, all the detection switches are connected in series to form a series circuit, and detection signals are output to the outdoor unit control module by the series circuit.
Furthermore, the output end of the series circuit is connected with the outdoor unit control module through a pluggable connection module.
Furthermore, the detection switch is a relay, one end of an input loop of the relay is connected with the first direct-current power supply, the other end of the input loop of the relay is connected with the water module control unit, and output loops of all the relays are sequentially connected in series to form the series circuit.
Further, the first direct current power source is provided by the water module.
Further, but plug connection module includes water module link and outdoor side link, water module link and outdoor side link have power supply terminal and signal terminal respectively, two terminals of water module link respectively with series circuit's both ends are connected, the power supply terminal and the second DC power supply of outdoor side link are connected, the signal terminal of outdoor side link with outdoor machine control module connects.
Further, the second dc power is provided by the outdoor unit.
Furthermore, a sampling circuit is connected between the signal terminal of the outdoor side connecting end and the outdoor unit control module.
Further, the outdoor unit control module controls the compressor to stop according to the detection signal and then performs timing, the compressor is restarted after the set time is met, and the outdoor unit control module continues to receive and judge the detection signal sent by the water module state detection module.
Further, when the number of times of restarting the compressor by the outdoor unit control module exceeds a set value, the compressor is not restarted, and a prompt signal is sent to give an alarm.
Compared with the prior art, the technical scheme of the invention has the following technical effects: according to the multi-split system, the water module state detection module is arranged and used for detecting the power failure state of the water module and sending a detection signal to the outdoor unit control module, and the outdoor unit control module directly controls the starting and stopping of the compressor according to the detection signal. That is, need not to wait for the complicated communication logic of indoor set and off-premises station, the feedback signal of water module can directly be sent and is used for shutting down the compressor for outdoor unit control module, and when water module suddenly shut down, the indoor set also responds immediately, closes the compressor, can avoid the compressor to continue the operation, and the refrigerant moves to water module department and water in the water module and lasts the heat transfer, leads to the water in the water module to take place in the condition that the water in the short time cools down and freezes, plays the effect of protection water module.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a system schematic diagram of an embodiment of a multi-split system according to the present invention;
fig. 2 is a communication schematic diagram of an embodiment of a multi-split system according to the present invention;
FIG. 3 is a schematic diagram of the circuit of FIG. 2;
fig. 4 is a control logic diagram of an embodiment of a multi-split system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The invention provides a multi-split system, in particular to a multi-split heat pump water heating system, which comprises an outdoor unit 11, a plurality of indoor units 12 and a plurality of water modules 13, wherein the indoor units 12 are connected with the outdoor unit 11 through refrigerant pipelines 14; the water module 13 comprises a water pump (not shown in the figure), a water supply pipeline 15 and a floor heating coil 16; wherein, the water pump provides circulating power for water module 13, and floor heating coil 16 is connected with water supply pipe 15.
The water module 13 is also called a water heating and supplying module, the water pump drives water to circulate between the water module 13 and the floor heating coil 16 through a water supply pipeline 15, the water in the water module 13 exchanges heat with flowing refrigerant, the water temperature rises, and the water circulates to the floor heating coil 16 to supply heat for users.
The water module is arranged at the indoor side, and the communication line is connected with the communication line between the outdoor unit and the indoor unit, so that the outdoor unit, the indoor unit and the water module are communicated with each other, and information is shared.
The water module 13 controls the inlet water temperature and the outlet water temperature by a separate indoor-side line controller.
The refrigerant cycle system is a system that performs a cooling or heating cycle of a refrigerant by using a compressor, a condenser, an expansion valve, and an evaporator. The cooling or heating cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the water module 13 or the indoor unit, which has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator may achieve a heating or cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant.
In the multi-split system of the present embodiment, the water module 13 functions as a condenser when heating, refrigerant circulates between the outdoor unit 11 and the water module 13, heat of the refrigerant is exchanged into water when the refrigerant circulates to the water module 13, and the water is circulated to the floor heating coil 16 for heating.
During cooling, a refrigerant circulates between the outdoor unit 11 and the indoor unit 12, the indoor unit has an evaporator, and the refrigerant circulating to the evaporator takes heat from air to achieve a cooling effect. However, during refrigeration, part of the refrigerant enters the water module 13, the water module 13 monitors the water temperature in real time, and when the temperature is lower than the set temperature, the water pump is controlled to be started to circulate the water in the system, so that an anti-freezing effect is achieved. However, if the water module 13 is powered down, the water temperature monitoring function is no longer available, and accordingly, the risk of freezing the water module 13 is brought.
The water module 13 can communicate with the indoor units 12, 12 and 11 by using, but not limited to, H-LINK protocol. Since the multi-split air-conditioning system may include a plurality of indoor units 12 and a plurality of water modules 13, in order to maintain stable operation of the system, communication between the indoor units and the water modules involves a plurality of logic judgments, and the waiting time is long, so that a power-down signal of the water module 13 is fed back to the outdoor unit 11 through a communication protocol at present, and the waiting time is as long as 100s, if a refrigerant is not stopped at this time, the water module 13 with power-down may be frozen within the time, and even the whole water module system may be damaged.
In order to solve the above problems, the present invention provides a multi-split system, as shown in fig. 1, an outdoor unit 11 is provided with an outdoor unit control module and a compressor (not shown).
The water module 13 has a water module control unit, the water module control unit is in communication connection with the outdoor unit 11, as shown in fig. 2, the multi-split system of the embodiment further includes a water module state detection module 17, the water module state detection module 17 is used for detecting a power failure state of the water module 13, and sending a detection signal to the outdoor unit control module, and the outdoor unit control module controls the start and stop of the compressor according to the detection signal.
Specifically, when the detection signal indicates that there is no power failure of the water module 13, the compressor is normally started, and the control operation logic operates according to the normal cooling or heating logic.
When power failure occurs to any water module 13, the outdoor unit control module controls the compressor to stop. It is possible to prevent the risk of freezing the water module 13.
The water module state detection module 17 can directly send a detection signal to the outdoor unit control module, and the priority of the detection signal is higher than the communication protocol of the outdoor unit 11 and the water module 13, so that once the water module is detected to be powered off, the compressor can be directly controlled to be shut down without waiting.
As a preferred embodiment, as shown in fig. 3, the water module state detection module includes:
the detection switches 18 are arranged in one-to-one correspondence with the water modules 13, the on-off states of the detection switches 18 are controlled by the corresponding water module control units, all the detection switches are connected in series to form a series circuit, and detection signals are output to the outdoor unit control module by the series circuit. By connecting the plurality of detection switches 18 in series, when any water module 13 is powered off, the detection switch 18 corresponding to the water module is switched off, and the corresponding whole series circuit is switched off, so that the external output signal of the series circuit jumps, and the external output signal can be detected by the outdoor unit control module and executes corresponding protection action. By adopting the scheme, the response to the power-down signal of the water module is timely, and the circuit is simple and reliable.
Since the outdoor unit 11 and the water module 13 may be installed at a far distance, in order to facilitate connection, the output end of the series circuit in this embodiment is connected to the outdoor unit control module through the pluggable connection module.
The pluggable connection module can be realized by adopting the structures of a socket and a plug, and is convenient to connect and disassemble.
As a preferred embodiment, the detection switch 18 may be implemented by using a relay, one end of an input loop of the relay is connected to the first dc power supply V1, the other end of the input loop is connected to the water module control unit, and output loops of the relay are sequentially connected in series to form a series circuit.
Wherein the first dc power supply V1 is provided by the water module 13. As shown in fig. 3, taking water module No. 1 as an example, when the water module is powered, the water module can normally provide the first direct current power supply V1, and simultaneously pull down the level of the other end of the input loop of the relay, so that the switch S1 of the output loop of the corresponding relay is closed. When the water module is powered down, the voltage of the first dc power source V1 disappears, and the switch S1 of the output circuit of the corresponding relay is turned off, so that the entire series circuit is turned off.
The series circuit is switched on only when the switches of the output circuits of the relays of all water modules are engaged.
In this embodiment, the water module 13 provides a 13V dc voltage to the first dc power supply V1.
The pluggable connection module comprises a water module connection end J1 and an outdoor side connection end J2, the water module connection end J1 and the outdoor side connection end J2 are respectively provided with a power supply terminal and a signal terminal, two terminals of the water module connection end J1 are respectively connected with two ends of a series circuit, the power supply terminal of the outdoor side connection end J2 is connected with a second direct-current power supply V2, and the signal terminal of the outdoor side connection end J2 is connected with the outdoor unit control module.
The second dc power V2 may be provided by the outdoor unit. When the whole series circuit is conducted, the second dc power supply V2 and the outdoor unit control module form a complete conduction loop, and the outdoor unit control module can detect that the series circuit outputs a high level signal.
When one or more detection switches 18 in the series circuit are disconnected, the conduction loop between the second direct current power supply V2 and the outdoor unit control module is disconnected, and the corresponding outdoor unit control module cannot detect a high-level signal, and if the water module is judged to be powered off, the compressor is controlled to stop. The fan can be shut down accordingly, or can be kept running for a certain period of time and then shut down again.
And a sampling circuit is also connected between the signal terminal of the outdoor side connecting end J2 and the outdoor machine control module. The water module state detection module is used for sampling the signal output by the water module state detection module 17 into a digital signal and sending the digital signal to the outdoor unit control module for judgment.
In order to avoid false alarms caused by conditions of instantaneous power failure of a water module, instantaneous power failure of a substrate and the like caused by power supply grid fluctuation, redundant monitoring control is added, and normal use of a user is prevented from being influenced.
As shown in fig. 4, the outdoor unit control module controls the compressor to stop according to the detection signal and then performs timing, the compressor is restarted after the set time is met, and the outdoor unit control module continues to receive and judge the detection signal sent by the water module state detection module.
When the number of times of restarting the compressor by the outdoor unit control module exceeds a set value, the compressor is not restarted any more, and a prompt signal is sent to give an alarm.
For example, when the water module is powered down, the outdoor unit is shut down, the number of times of occurrence of abnormality is accumulated, the outdoor unit retries to start after 3min, the system is normally started if the water module is powered up again, the outdoor unit is shifted to a repeated attempted start state if the water module is still in a power-down state, and when the number of times of attempted operation of the outdoor unit exceeds a preset threshold value within a fixed time threshold value, the system alarms and sends information such as the address of the abnormal water module to a user.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A multiple on-line system comprising:
an outdoor unit having an outdoor unit control module and a compressor;
the indoor unit is connected with the outdoor unit through a refrigerant pipeline;
a water module having one or more, the water module having a water module control unit communicatively connected with the outdoor unit;
it is characterized by also comprising:
and the water module state detection module is used for detecting the power failure state of the water module and sending a detection signal to the outdoor unit control module, and the outdoor unit control module controls the start and stop of the compressor according to the detection signal.
2. A multi-split system as claimed in claim 1, wherein the outdoor unit control module controls the compressor to be stopped when any one of the water modules is powered off.
3. The multi-split system as claimed in claim 1, wherein the water module state detecting module comprises:
the detection switches are arranged in one-to-one correspondence with the water modules respectively, the on-off states of the detection switches are controlled by the corresponding water module control units, all the detection switches are connected in series to form a series circuit, and detection signals are output to the outdoor unit control module by the series circuit.
4. A multi-split system as claimed in claim 3, wherein the output terminal of the series circuit is connected to the outdoor unit control module through a pluggable connection module.
5. The multi-online system as claimed in claim 4, wherein the detection switch is a relay, one end of an input loop of the relay is connected to the first dc power supply, the other end of the input loop is connected to the water module control unit, and output loops of all relays are sequentially connected in series to form the series circuit.
6. The multi-split system as claimed in claim 4, wherein the pluggable connection module includes a water module connection end and an outdoor side connection end, the water module connection end and the outdoor side connection end respectively have a power terminal and a signal terminal, two terminals of the water module connection end are respectively connected with two ends of the series circuit, the power terminal of the outdoor side connection end is connected with the second dc power supply, and the signal terminal of the outdoor side connection end is connected with the outdoor unit control module.
7. A multi-online system as claimed in claim 6, wherein the second dc power is supplied from the outdoor unit.
8. The multi-split system as claimed in claim 6, wherein a sampling circuit is further connected between the signal terminal of the outdoor side connection terminal and the outdoor unit control module.
9. The multi-split system as claimed in claim 6, wherein the outdoor unit control module controls the compressor to stop for timing according to the detection signal, restarts the compressor after a set time is met, and continues to receive and determine the detection signal sent by the water module status detection module.
10. The multi-split system as claimed in claim 9, wherein when the number of times the outdoor unit control module restarts the compressor exceeds a set value, the compressor is not restarted and a warning signal is transmitted for warning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110594633.XA CN113339949A (en) | 2021-05-28 | 2021-05-28 | Multi-split system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110594633.XA CN113339949A (en) | 2021-05-28 | 2021-05-28 | Multi-split system |
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| CN113339949A true CN113339949A (en) | 2021-09-03 |
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| CN202110594633.XA Pending CN113339949A (en) | 2021-05-28 | 2021-05-28 | Multi-split system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115218445A (en) * | 2022-07-15 | 2022-10-21 | 青岛海尔空调器有限总公司 | Air conditioner and air conditioner control method |
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| CN111486543A (en) * | 2020-04-21 | 2020-08-04 | 海信（山东）空调有限公司 | Air conditioner and control method thereof |
| CN212746644U (en) * | 2020-07-14 | 2021-03-19 | 宁波奥克斯电气股份有限公司 | Heat pump system |
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2021
- 2021-05-28 CN CN202110594633.XA patent/CN113339949A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104422076A (en) * | 2013-08-21 | 2015-03-18 | 珠海格力电器股份有限公司 | Air conditioner refrigerating unit and anti-freezing control method thereof |
| CN206861819U (en) * | 2017-06-22 | 2018-01-09 | 青岛海信日立空调系统有限公司 | A kind of air-conditioner control system and air-conditioning |
| CN207095109U (en) * | 2017-06-24 | 2018-03-13 | 佛山光腾新能源股份有限公司 | A kind of heat pump water pipeline heat exchanger anti-explosion detection device |
| CN111486543A (en) * | 2020-04-21 | 2020-08-04 | 海信（山东）空调有限公司 | Air conditioner and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115218445A (en) * | 2022-07-15 | 2022-10-21 | 青岛海尔空调器有限总公司 | Air conditioner and air conditioner control method |
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