CN114017903B - Floor heating and air conditioning integrated machine - Google Patents

Floor heating and air conditioning integrated machine Download PDF

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Publication number
CN114017903B
CN114017903B CN202111274103.3A CN202111274103A CN114017903B CN 114017903 B CN114017903 B CN 114017903B CN 202111274103 A CN202111274103 A CN 202111274103A CN 114017903 B CN114017903 B CN 114017903B
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Prior art keywords
temperature
preset
preset temperature
cold
compressor
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CN202111274103.3A
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CN114017903A (en
Inventor
郭来红
冯旭
张驰
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Qingdao Hisense Hitachi Air Conditioning System Co Ltd
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Qingdao Hisense Hitachi Air Conditioning System Co Ltd
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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
    • 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
    • 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
    • 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
    • F24F11/67—Switching between heating and cooling modes
    • 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
    • F24F11/85—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 variable-flow pumps
    • 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
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

Abstract

The invention relates to a floor heating and air conditioning integrated machine, which comprises: the cold and hot water unit is used for supplying circulating water; a control unit configured to perform the following: in the heating mode, when the circulating water temperature of the cold and hot water unit is higher than a first preset temperature, the cold and hot water unit is stopped, and when the circulating water temperature of the cold and hot water unit is lower than a second preset temperature, the cold and hot water unit is started; in the refrigeration mode, when the circulating water temperature of the cold and hot water unit is lower than a third preset temperature, the cold and hot water unit is stopped, and when the circulating water temperature of the cold and hot water unit is higher than a fourth preset temperature, the cold and hot water unit is started; the first preset temperature and the third preset temperature can be adjusted according to the running time of the compressor before the compressor is stopped in the corresponding mode, and the second preset temperature and the fourth preset temperature are adjusted according to the stopping time of the compressor before the compressor is started in the corresponding mode. The invention is used for solving the problems of unstable system operation and poor energy-saving effect caused by the existing temperature control start-stop mode.

Description

Floor heating and air conditioning integrated machine
Technical Field
The invention belongs to the technical field of floor heating air conditioner control, and particularly relates to a floor heating air conditioner all-in-one machine.
Background
As shown in fig. 1, the existing floor heating air conditioner includes an outdoor cold and hot water unit, an indoor end device and an indoor line controller, wherein the cold and hot water unit includes an outdoor unit and a water module integrated in the outdoor unit, so that the cold and hot water unit supplies circulating cold and hot water to the indoor end device through a water path circulating pipe, and the cold and hot water unit is provided with a water module controller for controlling the start and stop of the unit, the switching of the cooling and heating modes and the setting of the water temperature value; the indoor terminal equipment comprises heat exchangers such as a fan coil (wind disc for short), a floor heating coil (floor heating for short) or a radiator and the like.
The existing integrated floor heating and air conditioning machine generally adopts the inlet water temperature entering the outdoor cold and hot water unit or the outlet water temperature flowing out of the outdoor cold and hot water unit to judge the set value and the deviation value and execute temperature control shutdown.
The temperature control shutdown control mode has single control parameter and can not give consideration to the factors required by stable, energy-saving and reliable operation of the system. Particularly, under the conditions that the water capacity of a water system is too small, or a buffer water tank which is not matched with the water system is large enough, or the load of indoor end equipment is too small, the control mode can cause frequent starting and stopping of the compressor, bring abnormal noise on one hand, and is not energy-saving on the other hand, and on the other hand, the frequent starting can shorten the service life of the compressor and reduce the reliability of the water system.
Disclosure of Invention
The invention aims to provide a floor heating and air conditioning all-in-one machine which is used for solving the problems of unstable system operation and poor energy-saving effect caused by the existing temperature control start-stop mode.
In order to solve the technical problems, the invention provides the following technical scheme for solving the technical problems:
the utility model provides a warm up air conditioner all-in-one which characterized in that includes:
the cold and hot water unit is used for supplying circulating water;
a control unit configured to perform the following:
in the heating mode, when the temperature of circulating water of the cold and hot water unit is within a first preset temperature, the cold and hot water unit is stopped, and when the temperature of the circulating water of the cold and hot water unit is within a second preset temperature, the cold and hot water unit is started;
in a refrigeration mode, when the circulating water temperature of the cold and hot water unit is within a third preset temperature, the cold and hot water unit is stopped, and when the circulating water temperature of the cold and hot water unit is within a fourth preset temperature, the cold and hot water unit is started;
the first preset temperature and the third preset temperature can be adjusted according to the running time of the compressor before shutdown in the corresponding mode, and the second preset temperature and the fourth preset temperature are adjusted according to the stopping time of the compressor before startup in the corresponding mode.
In some embodiments of the present application, the first preset temperature and the third preset temperature can be adjusted according to the running time of the compressor before shutdown in the corresponding mode, specifically:
in the heating mode, the first preset temperature is adjusted by judging the relation between the running time of the compressor before shutdown and the preset running time;
and in the refrigeration mode, adjusting the third preset temperature by judging the relation between the running time of the compressor before shutdown and the preset running time.
In some embodiments of the present application,
in the heating mode, when the running time of the compressor is less than or equal to the preset running time before the compressor is stopped, the first preset temperature is increased, and the rotating speed of the water pump is increased, and when the running time of the compressor is greater than the preset running time, the first preset temperature is maintained, and the rotating speed of the water pump is reduced;
in the refrigeration mode, before the shutdown, the running time of the compressor is less than or equal to the preset running time, the third preset temperature is reduced, the rotating speed of the water pump is increased, and when the running time of the compressor is greater than the preset running time, the first preset temperature is maintained, and the rotating speed of the water pump is reduced.
In some embodiments of the present application, the second preset temperature and the fourth preset temperature can be adjusted according to a stop time of the compressor before starting in a corresponding mode, specifically:
in the heating mode, adjusting the second preset temperature by judging the relation between the shutdown time of the compressor before starting and the preset shutdown time;
and in the refrigeration mode, adjusting the fourth preset temperature by judging the relation between the shutdown time of the compressor before starting and the preset shutdown time.
In some embodiments of the present application,
in the heating mode, when the compressor shutdown time before starting is less than or equal to the preset shutdown time, reducing the second preset temperature, and when the compressor shutdown time is greater than the preset shutdown time, maintaining the second preset temperature;
in the cooling mode, when the compressor downtime is less than or equal to the preset downtime before starting, the fourth preset temperature is increased, and when the compressor downtime is greater than the preset downtime, the fourth preset temperature is maintained.
In some embodiments of the present application, the circulating water temperature is an inlet water temperature into the chiller/heater unit or an outlet water temperature out of the chiller/heater unit.
In some embodiments of the present application, the preset operation time and the preset shutdown time are set to 20 minutes, respectively.
Compared with the prior art, the floor heating and air conditioning all-in-one machine provided by the invention has the following advantages and beneficial effects:
under the condition of not increasing hardware cost, the running time of the compressor before starting and stopping and the stopping time of the compressor are modified and limited, and the preset temperature for controlling the temperature of the compressor to start and stop is modified, so that the frequent starting and stopping of the compressor are avoided, the energy conservation is realized, the running stability and reliability of the system are ensured, and the use experience of a user is improved; and the frequent start and stop of the compressor are avoided, and the service life of the compressor can be prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments of the present invention or the prior art will be briefly described below, and it is obvious that the drawings described below are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a structural diagram of an embodiment of a floor heating and air conditioning all-in-one machine provided by the invention;
FIG. 2 is a flow chart of temperature control start and stop in a heating mode of the floor heating air conditioner all-in-one machine embodiment provided by the invention;
fig. 3 is a flow chart of temperature control start and stop in a cooling mode of the floor heating and air conditioning all-in-one machine embodiment provided by the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all embodiments of the present invention. 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.
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.
Floor heating and air conditioning integrated machine
Referring to fig. 1, the outdoor side hot and cold water unit includes an outdoor unit and a water module integrated in the outdoor unit.
The outdoor unit mainly comprises a condenser, a variable frequency fan, a variable frequency compressor, an electronic expansion valve, a four-way valve and the like, and is controlled by an outdoor unit electric control plate to realize refrigeration and heating.
The target outlet water temperature Tso or target inlet water temperature Tsi can be set through the outdoor unit electric control board.
The water module is actually a water side heat exchanger and can be controlled by an indoor side wire controller.
The refrigerant side of the water module receives the refrigerant flowing out through the refrigerant pipeline of the outdoor unit, cold and hot water flows out from the water outlet side after heat exchange, and the cold and hot water flows into the indoor side end equipment through the waterway circulation pipeline, so that indoor side refrigeration and heating are realized.
Indoor side line controller passes through the software realization and is connected the communication of hot and cold water unit and indoor side end equipment, and line controller sends command control wind dish or warms up or the radiator, and intercommunication realizes opening of line controller control hot and cold water unit and controls water, system hot water simultaneously between line controller and the hot and cold water unit.
One chiller/heater unit may be connected to a plurality of line controllers (two rooms are shown in fig. 1) in a plurality of rooms, and each line controller may set its own machine number and transmit the machine number information to the chiller/heater unit.
The mode (comprising a heating mode and a cooling mode) and the set indoor target temperature Tin can be selected on the online controller; meanwhile, the wire controller is provided with a temperature sensor to detect the indoor actual temperature Ta, and the temperature sensor is used for detecting the indoor actual temperature Ta.
Temperature-controlled shutdown I
In the application, a first preset temperature and a second preset temperature are set aiming at the heating mode of the all-in-one machine.
And comparing the temperature of the circulating water of the cold and hot water unit with the first preset temperature, and when the temperature of the circulating water is greater than the first preset temperature, controlling the temperature of the compressor to stop.
And comparing the temperature of the circulating water with a second preset temperature, and starting the temperature control of the compressor when the temperature of the circulating water is less than the second preset temperature.
The circulating water temperature as described above may refer to the outlet water temperature Two and the inlet water temperature Twi of the chiller-heater unit.
The first preset temperature corresponding to the selected outlet water temperature Two is different from the first preset temperature corresponding to the selected inlet water temperature Two.
Similarly, the second predetermined temperature corresponding to the selected outlet water temperature Two is different from the second predetermined temperature corresponding to the selected inlet water temperature Twi.
The control mode of selecting the water outlet temperature Two to be used as the temperature control start-stop control is the same as the control mode of selecting the water inlet temperature Twi to be used as the temperature control start-stop control.
Therefore, in the present application, a control method using the leaving water temperature Two as the temperature-controlled start/stop control will be described as an example.
And comparing the water outlet temperature Two of the cold and hot water unit with a first preset temperature, and when the Two is greater than the first preset temperature, controlling the temperature of the unit to stop.
And in the unit temperature control stopping process, the outlet water temperature Two is compared with a second preset temperature, and when the Two is less than the second preset temperature, the compressor is started in a temperature control mode.
Wherein the first preset temperature is greater than the second preset temperature.
In the present application, the first preset temperature is the sum of a preset value and a first deviation value a, and the second preset temperature is the sum of a preset value and a second deviation value b, where the preset value is the target outlet water temperature Tso, and the first deviation value a is different from the second deviation value b.
In order to avoid frequent start and stop of the compressor, the start and stop time (including the preset running time M and the preset stop time N) of the compressor is set, and the control conditions (namely, the first preset temperature and the second preset temperature) of the temperature control start and stop are controlled and adjusted through the start and stop time.
For example, both the preset operation time M and the preset stop time N may be preset to 20 minutes.
The first predetermined temperature (the second predetermined temperature) is adjusted, i.e. the first deviation a (the second deviation b) is adjusted.
That is, increasing the first preset temperature (second preset temperature) is increasing the first deviation a (second deviation b), and decreasing the first preset temperature (second preset temperature) is decreasing the first deviation a (second deviation b).
Referring to fig. 2, the adjustment of the first preset temperature and the second preset temperature in the heating mode will be described in detail.
S11: and judging whether the Two is positioned in the range [ Tso + b, tso + a ], if not, proceeding to S12.
The outlet temperature twos may be the temperature of the water at the outlet side of the chiller/heater unit as actually measured by the temperature sensor.
And if the Two is within the range of Tso + b and Tso + a, the unit normally works and the temperature control start-stop control is not carried out.
In S11, tso is the target outlet water temperature, and the first deviation value a has an initial value, for example, an initial value of 5; the second deviation value b has an initial value, for example, 0.
S12: and judging whether Two is greater than Tso + a, if yes, stopping temperature control, and going to S13, otherwise, going to S16.
S13: and judging whether the running time T of the compressor before shutdown is less than or equal to the preset running time M, if so, going to S14, and if not, going to S15.
S14: the first preset temperature is increased and returns to S11.
Since the compressor operation time T before the shutdown is short, the first preset temperature is increased (i.e., the first deviation value a is increased) to indirectly increase the leaving water temperature Two when the temperature-controlled shutdown is achieved, thereby extending the compressor operation time T before the shutdown.
And because the temperature difference between the outlet water temperature and the inlet water temperature is large due to the increase of the outlet water temperature Two, the temperature difference is large, and the start-stop control of the unit is easy to trigger, so that the start-stop frequency of the whole unit can be reduced by increasing the rotating speed of a water pump in a cold-hot water unit.
Therefore, when the first preset temperature is increased, the rotating speed of the water pump is increased, and the starting and stopping frequency of the compressor is reduced.
In this case of the present application, the step size per first preset temperature increase may be set to 1.
S15: the first preset temperature is maintained and the process returns to S11.
When the preset operation time M is reached, the compressor operation time T is up to the standard before the shutdown, and at the moment, the first preset temperature is not adjusted.
In addition, the rotating speed of the water pump can be reduced while the first preset temperature is kept, so that energy conservation is realized.
S16: at Two < Tso + b, temperature control is initiated and proceeds to S17.
The outlet water temperature twos may be the temperature of the water at the outlet side of the chiller/heater unit as actually measured by the temperature sensor.
In S16, tso is the target outlet water temperature, and the second deviation value b has an initial value, for example, an initial value of 0.
S17: and judging whether the stop time of the compressor before starting is T' and is less than or equal to the preset stop time N, if so, going to S18, and if not, going to S19.
S18: the second preset temperature is decreased and the process returns to S11.
Since the compressor downtime T 'before this start is short, the second preset temperature is reduced (i.e., the second deviation b is reduced) to indirectly reduce the leaving water temperature Two when the temperature control start is reached, thereby prolonging the compressor downtime T' before the start.
Due to the reduction of the outlet water temperature Two and the compressor being in a stop state, the rotation speed of the water pump is not adjusted at this time.
In this case of the present application, the step size of each second preset temperature decrease may be set to 1.
S19: the second preset temperature is maintained and the process returns to S11.
When the preset stop time N is reached, it indicates that the compressor stop time T' has been reached before starting, at which point the second preset temperature is not adjusted.
And because the compressor is in a stop state, the rotating speed of the water pump is not adjusted at the moment.
Temperature-controlled shutdown II
And setting a third preset temperature and a fourth preset temperature aiming at the refrigeration mode of the all-in-one machine.
And comparing the temperature of the circulating water of the cold and hot water unit with a third preset temperature, and when the temperature of the circulating water is less than the third preset temperature, stopping the compressor by controlling the temperature.
And comparing the temperature of the circulating water with a fourth preset temperature, and starting the temperature control of the compressor when the temperature of the circulating water is higher than the fourth preset temperature.
The temperature of the circulating water as described above may be up to the outlet water temperature Two and the inlet water temperature Twi of the chiller-heater unit.
The third preset temperature corresponding to the selected outlet water temperature Two is different from the third preset temperature corresponding to the selected inlet water temperature Two.
The fourth preset temperature corresponding to the selected use of the outlet water temperature Two is different from the fourth preset temperature corresponding to the selected use of the inlet water temperature Two.
The control mode of selecting the water outlet temperature Two to be used as the temperature control start-stop control is the same as the control mode of selecting the water inlet temperature Twi to be used as the temperature control start-stop control.
Therefore, in the present application, a control method using the leaving water temperature Two as the temperature-controlled start/stop control will be described as an example.
And comparing the outlet water temperature Two of the cold and hot water unit with a third preset temperature, and when the Two is less than the third preset temperature, stopping the temperature control of the unit.
And in the unit temperature control stopping process, the outlet water temperature Two is compared with a fourth preset temperature, and when the Two is greater than the fourth preset temperature, the unit temperature control is started.
Wherein the third predetermined temperature is less than the fourth predetermined temperature.
In the present application, the third preset temperature is the sum of a preset value and a fourth deviation value c, and the fourth preset temperature is the sum of a preset value and a fourth deviation value d, where the preset value is the target outlet water temperature Tso, and the third deviation value c is different from the fourth deviation value d.
In order to avoid frequent start and stop of the compressor, the start and stop time (including the preset running time M and the preset stop time N) of the compressor is set, and the control conditions (namely, the third preset temperature and the fourth preset temperature) of the temperature control start and stop are controlled and adjusted through the start and stop time.
The third predetermined temperature (fourth predetermined temperature) is adjusted, i.e. the third deviation value c (fourth deviation value d) is adjusted.
That is, increasing the third preset temperature (fourth preset temperature) is increasing the third deviation value c (fourth deviation value d), and decreasing the third preset temperature (fourth preset temperature) is decreasing the third deviation value c (fourth deviation value d).
Referring to fig. 3, the adjustment of the third preset temperature and the fourth preset temperature in the cooling mode will be described in detail.
S21: and judging whether the Two is positioned in the range [ Tso + c, tso + d ], if not, proceeding to S22.
The outlet temperature twos may be the temperature of the water at the outlet side of the chiller/heater unit as actually measured by the temperature sensor.
And if the Two is within the range of Tso + b and Tso + a, the unit normally works and the temperature control start-stop control is not carried out.
In S21, tso is the target outlet water temperature, the third deviation value c has an initial value, such as-5, and the fourth deviation value d has an initial value, such as 0.
S22: and judging whether Two is smaller than Tso + c, if yes, stopping temperature control, and going to S23, and if not, going to S26.
S23: and judging whether the running time T of the compressor before shutdown is less than or equal to the preset running time M, if so, going to S24, and if not, going to S25.
S24: the third preset temperature is decreased and returns to S21.
Since the compressor operation time T before the shutdown is short, the third preset temperature is reduced (i.e., the third deviation value c is reduced) to indirectly reduce the leaving water temperature Two when the temperature-controlled shutdown is reached, thereby extending the compressor operation time T before the shutdown.
And the temperature difference between the water outlet temperature Two and the water inlet temperature Twi is large due to the reduction of the water outlet temperature Two, the temperature difference is large, and the start-stop control of the unit is easy to trigger, so that the start-stop frequency of the whole unit can be reduced by increasing the rotating speed of a water pump in the cold-hot water unit.
Therefore, when the third preset temperature is reduced, the rotating speed of the water pump is increased, and the starting and stopping frequency of the compressor is reduced.
In this case of the present application, the step size of each third preset temperature decrease may be set to 1.
S25: the third preset temperature is maintained and the process returns to S21.
When the preset operation time M is reached, the operation time T of the compressor before the shutdown is up to the standard, and at the moment, the third preset temperature is not required to be adjusted.
In addition, the rotating speed of the water pump can be reduced while the third preset temperature is kept, so that energy conservation is realized.
S26: when Two > Tso + d, temperature control is started, and proceeds to S27.
The outlet temperature twos may be the temperature of the water at the outlet side of the chiller/heater unit as actually measured by the temperature sensor.
In S26, tso is the target leaving water temperature, and the fourth deviation value d has an initial value, for example, an initial value of 0.
S27: and judging whether the stop time of the compressor before starting is T' and is less than or equal to the preset stop time N, if so, going to S28, otherwise, going to S29.
S28: the fourth preset temperature is increased and returns to S21.
Since the compressor downtime T 'before this start is short, the fourth preset temperature is increased (i.e., the fourth deviation d is increased) to indirectly increase the leaving water temperature Two when the temperature control start is reached, thereby prolonging the compressor downtime T' before the start.
Since the compressor is in a stopped state, the rotation speed of the water pump is not adjusted at this time.
In this case of the present application, the step size of each second preset temperature decrease may be set to 1.
S29: the fourth preset temperature is maintained and the process returns to S21.
When the preset stop time N is reached, it indicates that the compressor stop time T' has reached its standard before starting, at which point the fourth preset temperature does not have to be adjusted.
Since the compressor is in a stopped state, the rotation speed of the water pump is not adjusted at this time.
The floor heating and air conditioning all-in-one machine can reduce the starting and stopping frequency of the compressor by adjusting the starting and stopping conditions of the temperature control, so that the running reliability of the all-in-one machine is improved; and reduce the probability that the compressor frequently stops starting and stopping, help energy-conservation and postpone compressor life.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit of the technical solutions of the embodiments of the present invention.

Claims (4)

1. The utility model provides a warm up air conditioner all-in-one which characterized in that includes:
the cold and hot water unit is used for supplying circulating water;
a control unit configured to perform the following:
in the heating mode, when the circulating water temperature of the cold and hot water unit is higher than a first preset temperature, the cold and hot water unit is stopped, and when the circulating water temperature of the cold and hot water unit is lower than a second preset temperature, the cold and hot water unit is started; in a refrigeration mode, when the circulating water temperature of the cold and hot water unit is lower than a third preset temperature, the cold and hot water unit is stopped, and when the circulating water temperature of the cold and hot water unit is higher than a fourth preset temperature, the cold and hot water unit is started;
wherein the first preset temperature is increased when the compressor operation time before the shutdown in the heating mode is less than or equal to a preset operation time, the first preset temperature is maintained when the compressor operation time is greater than the preset operation time, the third preset temperature is decreased when the compressor operation time before the shutdown in the cooling mode is less than or equal to the preset operation time, and the third preset temperature is maintained when the compressor operation time is greater than the preset operation time; the second preset temperature and the fourth preset temperature are adjusted according to the stop time of the compressor before starting in the corresponding mode;
or the first preset temperature and the third preset temperature can be adjusted according to the running time of the compressor in the corresponding mode before shutdown; when the compressor downtime is less than or equal to the preset downtime before starting in the heating mode, the second preset temperature is reduced, when the compressor downtime is greater than the preset downtime, the second preset temperature is maintained, when the compressor downtime is less than or equal to the preset downtime before starting in the cooling mode, the fourth preset temperature is increased, and when the compressor downtime is greater than the preset downtime, the fourth preset temperature is maintained.
2. The all-in-one floor heating and air conditioning machine as claimed in claim 1,
increasing the first preset temperature and increasing the rotating speed of a water pump in the heating mode, and reducing the rotating speed of the water pump while maintaining the first preset temperature;
and when the third preset temperature is reduced in the refrigeration mode, the rotating speed of the water pump is increased, and when the third preset temperature is maintained, the rotating speed of the water pump is reduced.
3. The all-in-one machine of floor heating and air conditioning as claimed in claim 1 or 2, wherein the temperature of the circulating water is the temperature of inlet water entering the hot and cold water unit or the temperature of outlet water flowing out of the hot and cold water unit.
4. The all-in-one floor heating and air conditioning machine as claimed in claim 1 or 2, wherein the preset running time and the preset shutdown time are respectively set to be 20 minutes.
CN202111274103.3A 2021-10-29 2021-10-29 Floor heating and air conditioning integrated machine Active CN114017903B (en)

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JP4527392B2 (en) * 2003-12-25 2010-08-18 株式会社長府製作所 Hot water heater and control method thereof
CN205783575U (en) * 2016-05-31 2016-12-07 深圳市新环能科技有限公司 Based on prediction central air conditioner system optimal downtime and the energy conserving system of analysis
CN106287904A (en) * 2016-10-17 2017-01-04 广东美的暖通设备有限公司 Source pump and control method thereof
CN108507125B (en) * 2018-01-23 2020-12-18 青岛海尔空调电子有限公司 Air conditioning unit compound mode control method
CN108800488B (en) * 2018-06-01 2020-11-27 青岛海尔空调电子有限公司 Water system air conditioner control method
CN110686381B (en) * 2019-10-15 2021-09-14 广东美的暖通设备有限公司 Air conditioner control method and device and computer readable storage medium
CN112032917B (en) * 2020-08-31 2021-08-03 珠海格力节能环保制冷技术研究中心有限公司 Central air-conditioning cold water system and control method thereof

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