CN111678255A - Air source heat pump unit - Google Patents
Air source heat pump unit Download PDFInfo
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- CN111678255A CN111678255A CN202010494988.7A CN202010494988A CN111678255A CN 111678255 A CN111678255 A CN 111678255A CN 202010494988 A CN202010494988 A CN 202010494988A CN 111678255 A CN111678255 A CN 111678255A
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- 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
- F24H4/04—Storage heaters
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- 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
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- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses an air source heat pump unit, comprising: a water tank; the main unit is connected with the water tank; the sub-units are in communication connection with the main unit, the sub-units are connected to the water tank in parallel, and the number of compressors contained in each sub-unit is the same as that of the compressors contained in the main unit; a first temperature detection element; the main controller is in communication connection with the main unit, the water tank inside which the water tank is preset is used for setting water temperature, and the main controller is configured as follows: acquiring the actual water temperature of the water tank detected by the first temperature detection element, and acquiring the number of equivalent units according to the actual water temperature of the water tank, the set working time of the units and the heat required by the water tank; obtaining the number of compressors to be started according to the product of the number of equivalent units and the number of compressors corresponding to any unit; and judging the compressor to be started according to the accumulated running time of the compressor or the unit number. The invention solves the problems of large influence on system performance caused by impact on a power grid and low effective utilization rate of heat in the conventional air source heat pump unit.
Description
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to an improvement of an air source heat pump unit structure.
Background
The existing air source heat pump unit is generally provided with a main unit and a plurality of sub-units, the main unit and the sub-units are connected with a water tank, water in the water tank is heated, the water tank can provide hot water, 1 or 2 compressors are correspondingly arranged in each sub-unit, when the unit is required to work to prepare hot water, the compressors in all the units are controlled to be started simultaneously, and when actual water temperature reaches the set water temperature of the water tank, the compressors in all the units are stopped simultaneously.
By adopting the mode to control the unit to operate, the starting times and the stopping times of all the units in unit time are increased, and the frequent starting and stopping of all the units in unit time are easily caused. The frequent starting and stopping of the unit can increase the impact frequency to the power grid, and the impact to the power grid is large; the unit may be shut down if the minimum running time requirement of the compressor is not met, oil in the compressor enters into the system more, oil return is less, oil shortage of the compressor is caused, oil shortage inside the compressor can cause abrasion of parts inside the compressor, running efficiency of the compressor is reduced, performance of the unit is reduced, and service life of the compressor is reduced; when the hot water is not used in real time, all the units are started in sequence and then work simultaneously, and after the set water temperature of the water tank is reached quickly, the heat preservation time is long, the heat loss is large, and the heat utilization rate is low.
Disclosure of Invention
The invention provides an air source heat pump unit, which aims to solve the problems that impact on a power grid has great influence on system performance and the effective heat utilization rate is low when an air source heat pump unit in the prior art is used.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an air source heat pump unit, comprising:
a water tank;
the main unit is connected with the water tank;
the plurality of sub-units are in communication connection with the main unit, the plurality of sub-units are connected to the water tank in parallel and are connected with the main unit in parallel, and the number of compressors contained in each sub-unit is the same as that of the compressors contained in the main unit;
the first temperature detection element is arranged in the water tank and used for detecting the temperature of the water tank;
the main controller is in communication connection with the main unit, the water tank inside which the water tank is preset is used for setting water temperature, and the main controller is configured as follows:
acquiring the actual water temperature of the water tank detected by a first temperature detection element, and acquiring the number of equivalent units according to the actual water temperature of the water tank, the set water temperature of the water tank, the volume of the water tank, the set working time of the unit and the heat required by the water tank when the actual water temperature of the water tank is detected to be smaller than the set water temperature of the water tank;
obtaining the number of compressors to be started according to the product of the number of the equivalent units and the number of the compressors corresponding to any unit;
and judging the compressors to be started in the sub-unit and the main unit according to the accumulated running time of the compressors or the serial numbers of the sub-unit and the main unit.
Further, the number of the equivalent units is M, which is calculated by the formula: m =1.163 x (Ts-Tr) x V/(Q x delta time), wherein Tr is the actual water temperature of the water tank, Ts is the set water temperature of the water tank, V is the volume of the water tank, Q is the heat required for heating the water in the water tank, and delta time is the set working time of the unit.
Further, the master is configured to: and communicating with the main unit, acquiring the accumulated running time of the compressors corresponding to all the units, and controlling the units to sequentially start the compressors in each unit according to the serial numbers prestored in the main controller by the units when the accumulated running time of the compressors of all the units is the same until the number of the compressors required to be started is reached.
Further, the master is configured to: and acquiring the accumulated running time of the compressors of all the units through communication with the main unit, and controlling all the compressors to be sequentially started from small to large according to the accumulated running time when the accumulated running time of the compressors of all the units is different until the number of the compressors to be started is reached.
Further, the master is configured to:
and acquiring the actual water temperature of the water tank detected by the first temperature detection element, and controlling the compressor of the unit to stop according to the relation between the actual water temperature of the water tank and the set water temperature of the water tank.
Further, the master is configured to: and controlling all started compressors to be stopped in sequence according to the starting sequence when the compressors are stopped, and controlling the stopping time interval between every two adjacent compressors to be larger than or equal to Z.
Further, the method also comprises the following steps:
the second temperature detection element is used for detecting the ambient temperature around the water tank and is in communication connection with the main controller;
the master is configured to: when the environment temperature is detected to be lower than the preset environment temperature and the actual water temperature of the water tank is detected to be lower than the anti-freezing temperature of the water tank, the system is communicated with the main unit to obtain the accumulated running time of the compressors in the main unit and the sub-units, the number of the compressors is preset and started in the main controller according to the accumulated running time of the compressors in the units, and the compressors in the units are controlled to be sequentially started from small to large according to the accumulated running time;
and controlling the unloading of part of the started compressors when the acquired water temperature in the water tank reaches the second preset water tank temperature.
Further, the master is configured to: when the detected ambient temperature is lower than the preset ambient temperature and the actual water temperature of the water tank is lower than the anti-freezing temperature of the water tank, the volume and Q of the water tank are determined according to the third preset water tank temperature, the anti-freezing temperature of the water tank, the volume and the Q of the water tank prestored in the water tank0And calculating the heating quantity calibrated when the single unit leaves the factory to obtain the number of the compressors to be started, and sequentially controlling the compressors to be started from bottom to top according to the accumulated running time of the compressors until the number of the compressors to be started is reached.
further, the number of compressors to be turned on is X, which is obtained by the following formula X =4.187 × (Tz-ThAnti-freezing device）/V/3.6/Q0xm 1, where Tz is the third preset tank temperature, ThAnti-freezing deviceThe antifreezing temperature of the water tank, V is the volume of the water tank, Q0The heating capacity calibrated when a single unit leaves a factory.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
according to the air source heat pump unit provided by the invention, the actual water temperature of the water tank detected by the temperature detection element can be obtained through the main controller, and the equivalent unit quantity can be obtained according to the actual water temperature of the water tank, the set working time of the unit, the volume of the water tank and the heat required by the water tank; and then, obtaining the number of the compressors to be started by multiplying the number of the equivalent units by the number of the compressors corresponding to any unit, and judging the compressors to be started in the sub-unit and the main unit according to the accumulated running time of the compressors or the numbers of the sub-unit and the main unit. When the unit is used, all compressors in the unit do not need to be started completely, and the problem of large impact on a power grid caused by frequent starting of all the compressors is avoided;
meanwhile, when the unit is used, all the compressors do not need to be started frequently, but only part of the compressors are started, so that the problems that the compressors are in oil shortage due to frequent starting, the service life is short and the system performance is low are solved;
the main controller obtains the number of the compressors which just need to be started through calculation, and the problems that the heat provided for the whole water tank is too much and the heat loss is large due to the fact that redundant compressors are started are avoided.
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 schematic structural diagram of an air source heat pump unit according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart illustrating the loading of a compressor of the air source heat pump unit according to the embodiment of the 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 an embodiment of an air source heat pump unit, which comprises:
a water tank 100, wherein water is placed in the water tank 100 and can be used by a user after being heated;
the main unit 200, connected to the water tank 100,
a plurality of sub units 300 which are connected with the main unit 200 in a communication manner, wherein the plurality of sub units 300 are connected to the water tank 100 in parallel and connected with the main unit 200 in parallel, and the number of compressors contained in each sub unit 300 is the same as that of the compressors contained in the main unit 200; when the main unit 200 and the sub-unit 300 are shipped, the corresponding internal structures are completely the same, and when the main unit 200 and the sub-unit 300 are used, one of the units can be set as the main unit 200 in a dial setting mode.
The main unit group 200 and the sub unit group 300 each include:
the evaporimeter, compressor and heat exchanger, its compressor correspond and the evaporimeter, the heat exchanger is connected and is formed refrigerant circulation circuit, when being connected with water tank 100, can correspond and set up a coil pipe heat exchanger, its setting that corresponds is in the heat exchanger side, a heat for absorbing the heat that the heat exchanger side distributes, the coil pipe heat exchanger is including cold water inlet and hot water delivery port, cold water gets into and flows out to water tank 100 after the heat exchanger side heat is absorbed through the coil pipe heat exchanger in, make the water that enters into in the water tank 100 for the hot water that is heated, connect user water terminal on water tank 100, make the user can use hot water from water tank 100.
Each of the main unit 200 and the sub-unit 300 may include at least one compressor, that is, each of the main unit 200 and the sub-unit 300 may be correspondingly provided with a plurality of compressors, the number of the compressors in the main unit 200 is the same as that of the compressors in all the sub-units 300, and the specific structure may refer to an air source heat pump unit structure with a plurality of compressors of different numbers in the prior art, which is not described herein.
When the water tank is arranged, in order to quickly heat water in the water tank 100, a plurality of units can be correspondingly arranged when the water tank is arranged, namely the structure of the water tank can be set to a structural mode comprising one main unit 200 and a plurality of sub-units 300, and when the water tank is connected, the main unit 200 and the sub-units 300 are connected to the water tank 100 in parallel to provide heat for the water tank 100.
And the master controller is in communication connection with the host unit 200.
When the main unit 200 is specifically set, the main unit 200 is in communication connection with the main controller through the wire controller, and can be used for transmitting signals to the main controller, an auxiliary control panel is arranged on each sub-unit 300, a main control panel is also arranged on the main unit 200 in a corresponding manner, the auxiliary control panel is in communication connection with the main control panel on the main unit 200 in a corresponding manner, the main control panel is in communication connection with the main controller through the wire controller, signals such as accumulated running time of a compressor in each sub-unit 300 are mainly transmitted to the main control panel of the main unit 200, and then transmitted to the main controller through the main control panel, and communication between the sub-unit 300 and the main controller is realized through the.
The first temperature detecting element 110 is disposed in the water tank 100 and is used for detecting the actual temperature of the water tank 100, and preferably, when disposed, the first temperature detecting element 110 in the present embodiment may be a temperature sensor disposed inside the water tank 100 and used for detecting the actual temperature of the water in the water tank 100.
The water tank setting water temperature of the water tank 100 is preset in the main controller, and the water tank setting water temperature of the water tank 100 can be realized by directly storing the water tank setting water temperature in the main controller in advance, and the water tank setting water temperature setting device is configured as follows: when detecting that the actual water temperature of the water tank is less than the set water temperature of the water tank, the temperature of the water tank is too low, and at the moment, the main controller can obtain the equivalent unit quantity according to the actual water temperature of the water tank, the set working time of the unit and the heat required by the water tank 100.
For convenience of description, in this embodiment, the number of the equivalent units is set to M, which is calculated by the formula: m =1.163 × (Ts-Tr) × V/(Q × Δ time), where Tr is the actual water temperature of the tank, Ts is the set water temperature of the tank set in the controller, Q is the amount of heat required to heat the water in the tank, V is the tank volume, and Δ time is the set operating time of the unit.
Because the user can select different volumetric water tanks 100 and use with it when using air source heat pump set and water tank 100 cooperation, the volume of water tank 100 may be unknown, and the acquisition mode of water tank 100 container has following several in this embodiment:
if the water tank volume can be set in the controller, the actual water tank volume V on site is input into the main controller;
if the volume of the water tank cannot be set in the controller, the unit is required to automatically calculate the volume V of the water tank through the actual heating process.
The specific calculation process is as follows:
starting a P machine set (P is more than or equal to 1), operating TY1 time (TY 1 is more than 0 minute), after the machine is stabilized, the actual water temperature is Tr3, operating TY2 time (TY 2 is more than 0, unit: h), and increasing the water temperature to Tr4, wherein Tr4-Tr3 is more than or equal to 1 ℃, and then calculating the volume V of a water tank according to the following formula:
V=P×Q×TY2 /（Tr4 - Tr3）/ 1.163
in addition, the tank volume V can also be set by dialing on the main control board of the main unit 200.
The actual temperature of water tank accessible first temperature detect element 110 detects the back and sends the signal for the master controller, and the operating time that the unit set for can realize through the reservation setting of master controller: such as:
the time can be reserved by setting the master controller when setting, and the time is a specific time point, such as 12: 30; representing an actual tank water temperature Tr = Ts at 12: 30;
the main controller is set to reserve time, which is a specific time period, such as 1h, and the time period indicates that after 1h, the actual water temperature Tr = Ts of the water tank.
The method comprises the following steps of setting a main controller, setting starting time and stopping time, wherein the time is a specific time point, the starting time point of a unit is time1, the time point reserved and set by the main controller is time2, delta time = time2-time1 (unit: h) in the working time of the unit, and the actual water temperature of a water tank after the delta time meets the following requirements: tr = Ts.
And setting a controller to set the starting time and the stopping time, wherein the time is a specific time period, such as 1h, the time period indicates that the unit starts to work after 1h, and the actual water temperature Tr = Ts of the water tank is set when the stopping time is up.
The heat Q required for heating the water in the water tank 100 is represented by the formula: q = cm (Ts-Tr).
Obtaining the number of compressors to be started according to the product of the number of the equivalent units and the number of the compressors corresponding to any unit; for convenience of description, the requirements of the present embodiment are setThe number of the compressors to be started is m, n machine sets are arranged, the machine sets comprise a main machine set 200 and a sub machine set 300, and the number of the compressors corresponding to the main machine set 200 and the sub machine set 300 is m0、m1、m2、m3……mnAnd m is0、m1、m2、m3……mnAre equal.
i.e. M = M × M1
And judging the compressors to be started in the sub-unit 300 and the main unit 200 according to the accumulated running time of the compressors or the numbers of the sub-unit 300 and the main unit 200.
And after the number of the compressors needing to be started is determined, the main controller further judges the compressors needing to be started. The master is configured to: the method comprises the steps of communicating with a main unit group 200 to obtain the accumulated running time of compressors corresponding to all the units, directly transmitting the accumulated running time of the compressors included in the main unit group 200 to a main controller through a wire controller, communicating with the main unit group 200 correspondingly to the sub-unit groups 300, communicating with the main controller to correspondingly transmit the accumulated running time of the compressors of the sub-unit groups 300 to the main controller correspondingly to the main controller through the main controller.
And the main controller performs further judgment when acquiring the accumulated running time of the compressors in each unit, and controls the units to sequentially start the compressors in the units according to the serial numbers prestored in the main controller by the units when acquiring the same accumulated running time of the compressors of all the units until the number of the compressors required to be started is reached.
That is, when the accumulated running time of the compressors is the same, the compressors in each unit are sequentially started according to the sequence of the numbers pre-stored in the master controller by the compressors of each unit, for example, when the compressors are started, all the compressors in the unit 1 are started first, then all the compressors in the unit 2 are started sequentially, and the starting of the compressors is performed continuously and circularly.
When the main controller obtains that the accumulated running time of the compressors of all the units is different, all the compressors are controlled to be sequentially started from small to large according to the accumulated running time until the number of the compressors to be started is reached, and if the accumulated running time of part of the compressors is the same, the compressors are started according to the number sequence prestored in the main controller.
According to the air source heat pump unit provided by the invention, the actual water temperature of the water tank detected by the first temperature detection element 110 can be obtained through the main controller, and the equivalent unit quantity can be obtained according to the actual water temperature of the water tank, the set working time of the unit, the volume of the water tank and the heat required by heating of the water tank 100; and then, obtaining the number of the compressors to be started by the product of the number of the equivalent units and the number of the compressors corresponding to any unit, and judging the compressors to be started in the sub-unit 300 and the main unit 200 according to the accumulated running time of the compressors or the numbers of the sub-unit 300 and the main unit 200. When the unit is used, all compressors in the unit do not need to be started completely, and the problem of large impact on a power grid caused by frequent starting of all the compressors is avoided;
meanwhile, when the unit is used, all compressors do not need to be frequently started, only part of the compressors are started, and the compressors are started according to the accumulated running time of the compressors when the unit is started, so that the balance of each unit in the whole air source heat pump unit can be ensured, and the service life uniformity of each unit is ensured.
Meanwhile, the compressors are partially started, and the rest of the compressors are not started, so that the compressors can be alternately started, and the problems that the compressors are in oil shortage due to frequent starting of all the compressors, the service life is short and the system performance is low are solved;
the main controller calculates and acquires the number of the compressors which just need to be started for the heating water tank 100 by acquiring a plurality of parameters, and the problems that the heat provided for the whole water tank 100 is too much and the heat loss is large due to the fact that redundant compressors are started are avoided.
Further, the master is configured to:
and acquiring the actual temperature of the water tank 100 detected by the first temperature detection element 110, and controlling the compressor of the unit to stop according to the relation between the actual temperature of the water tank 100 and the set temperature of the water tank 100.
When the difference value between the actual temperature of the water tank 100 and the set temperature of the water tank 100 is detected to be larger than or equal to zero, all the units are correspondingly controlled to stop through the main controller.
And during specific control, all started compressors can be controlled to be stopped in sequence according to the starting sequence when the compressors are stopped, and the stopping time interval between two adjacent compressors is controlled to be larger than or equal to z.
And after the started unit is stopped, accumulating the working time of each compressor in the unit to the corresponding working time.
The air source heat pump unit in this embodiment can also protect by self in order to realize preventing frostbite, during concrete setting, can correspond and set up second temperature detection element at water tank 100 periphery, detects the ambient temperature around the water tank 100 through second temperature detection element, second temperature detection element with the master controller communication is connected to give the master controller with temperature signal, the optional temperature sensor that also can correspond of second temperature detection element.
The master is configured to: when detecting that ambient temperature is less than preset ambient temperature, when the actual temperature of water tank is less than the water tank freeze-proof temperature, then the control section unit that corresponds opens, because ambient temperature has been less than preset ambient temperature, and the actual temperature of water tank has been less than first preset water tank 100 temperature, then it is lower to indicate ambient temperature, and the temperature of water tank 100 is lower, may produce the condition of freezing, at this moment, needs to carry out freeze protection.
Specifically, the master controller communicates with the master unit 200 to obtain the accumulated running time of the compressors in the master unit 200 and each sub-unit 300, and then the compressors in the units are controlled to be sequentially started according to the accumulated running time of the compressors of each unit and the number of the preset starting compressors in the master controller;
during setting, the number of the compressors needing to be started during anti-freezing protection can be set to be R in the main controller in advance, R is larger than 1, then the compressors are controlled to be started from small to large according to the accumulated running time of the compressors of each unit, and if the accumulated running time of the compressors is the same, the compressors in the units can be started in sequence according to the serial numbers of the units in the main controller.
And when the water temperature in the water tank 100 reaches the preset temperature of the second water tank 100, controlling the unloading of part of the started compressors.
For convenience of description, in this embodiment, the preset ambient temperature is set as: th, the anti-freezing temperature of the water tank is ThAnti-freezing deviceThe preset temperature of the second water tank 100 is Tf。
When the ambient temperature is lower than Th (Th is more than 0), Tr is less than or equal to Th and the temperature of the water tank 100 is less than or equal to ThAnti-freezing device（ThAnti-freezing device> 0), the main controller starts the anti-freezing protection.
The unit is executed according to the following basic scheme:
the main controller determines R stations to be started according to the accumulated working time of the compressors in all the units, and Tr rises to the preset temperature T of the second water tank 100 after the units work stablyfDuring the operation, partial compressors can be unloaded, and the specific unloading number can be directly set in the main controller, so that the whole air source heat pump unit works with the minimum number of units to keep the temperature of water in the water tank 100 constant.
When the main controller detects that Ts-Tr is larger than or equal to 0, a shutdown instruction is executed, compressors in all the units are sequentially shut down according to the sequence of starting, and the shutdown time interval is Z seconds (Z is larger than 0).
And after each machine set of the R machine sets is shut down, the working time of each machine set is added to the corresponding working time.
The main controller in this embodiment may also perform freeze protection in another manner to control the starting of the compressors, that is, when the main controller detects that the ambient temperature is lower than the preset ambient temperature and the actual water temperature of the water tank is lower than the freeze protection temperature of the water tank, the number of the compressors to be started is calculated according to the third preset water tank 100 temperature, the freeze protection temperature of the water tank, the volume of the water tank 100 and the heating capacity of a single unit, which are prestored inside the main controller, and the main controller is sequentially started from small to large according to the accumulated running time of the compressors until the number of the compressors to be started is reached.
assuming that the number of compressors to be started is ×, × is obtained by the following formula of × =4.187 × (Tz-Th freeze prevention)/V/3.6/Q0xm 1, where Tz is the third preset tank 100 temperature, Th is the tank freezing point, V is the volume of the tank 100, Q0Heating calibrated when single unit leaves factoryThe quantity and the heating capacity are parameters obtained by testing and obtaining the unit when the unit leaves a factory.
Similarly, when the accumulated running time of the compressors is the same, the compressors are started in sequence according to the number of the unit prestored in the main controller.
When the accumulated operation time of the compressor is different, the compressors are started in sequence from small to large according to the accumulated operation time.
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 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 (9)
1. An air source heat pump unit comprises:
a water tank;
the main unit is connected with the water tank;
the sub-unit is provided with a plurality ofly, is connected with the communication of host computer group, and a plurality of sub-units connect in parallel to on the water tank and with the host computer group is parallelly connected, and the compressor quantity that every sub-unit contains is the same with the compressor quantity that the host computer group contains, its characterized in that still including:
the first temperature detection element is arranged in the water tank and used for detecting the temperature of the water tank;
the main controller is in communication connection with the main unit, the water tank inside which the water tank is preset is used for setting water temperature, and the main controller is configured as follows:
acquiring the actual water temperature of the water tank detected by a first temperature detection element, and acquiring the number of equivalent units according to the actual water temperature of the water tank, the set water temperature of the water tank, the volume of the water tank, the set working time of the unit and the heat required by the water tank when the actual water temperature of the water tank is detected to be smaller than the set water temperature of the water tank;
obtaining the number of compressors to be started according to the product of the number of the equivalent units and the number of the compressors corresponding to any unit;
and judging the compressors to be started in the sub-unit and the main unit according to the accumulated running time of the compressors or the serial numbers of the sub-unit and the main unit.
2. The air source heat pump unit of claim 1, wherein the number of equivalent units is M, which is calculated by the formula: m =1.163 x (Ts-Tr) x V/(Q x delta time), wherein Tr is the actual water temperature of the water tank, Ts is the set water temperature of the water tank, V is the volume of the water tank, Q is the heat required for heating the water in the water tank, and delta time is the set working time of the unit.
3. The air source heat pump unit of claim 1, wherein the master controller is configured to: and communicating with the main unit, acquiring the accumulated running time of the compressors corresponding to all the units, and controlling the units to sequentially start the compressors in each unit according to the serial numbers prestored in the main controller by the units when the accumulated running time of the compressors of all the units is the same until the number of the compressors required to be started is reached.
4. The air source heat pump unit of claim 1, wherein the master controller is configured to: and acquiring the accumulated running time of the compressors of all the units through communication with the main unit, and controlling all the compressors to be sequentially started from small to large according to the accumulated running time when the accumulated running time of the compressors of all the units is different until the number of the compressors to be started is reached.
5. The air source heat pump unit of claim 1, wherein the master controller is configured to:
and acquiring the actual water temperature of the water tank detected by the first temperature detection element, and controlling the compressor of the unit to stop according to the relation between the actual water temperature of the water tank and the set water temperature of the water tank.
6. The air source heat pump unit of claim 5, wherein the master controller is configured to: and controlling all started compressors to be stopped in sequence according to the starting sequence when the compressors are stopped, and controlling the stopping time interval between every two adjacent compressors to be larger than or equal to Z.
7. The air source heat pump unit of claim 1, further comprising:
the second temperature detection element is used for detecting the ambient temperature around the water tank and is in communication connection with the main controller;
the master is configured to: when the environment temperature is detected to be lower than the preset environment temperature and the actual water temperature of the water tank is detected to be lower than the anti-freezing temperature of the water tank, the system is communicated with the main unit to obtain the accumulated running time of the compressors in the main unit and the sub-units, the number of the compressors is preset and started in the main controller according to the accumulated running time of the compressors in the units, and the compressors in the units are controlled to be sequentially started from small to large according to the accumulated running time;
and controlling the unloading of part of the started compressors when the acquired water temperature in the water tank reaches the second preset water tank temperature.
8. The air source heat pump unit of claim 1, wherein the master controller is configured to: when the detected ambient temperature is lower than the preset ambient temperature and the actual water temperature of the water tank is lower than the anti-freezing temperature of the water tank, the volume and Q of the water tank are determined according to the third preset water tank temperature, the anti-freezing temperature of the water tank and the volume and Q of the water tank prestored in the water tank0And calculating the heating quantity calibrated when the single unit leaves the factory to obtain the number of the compressors to be started, and sequentially controlling the compressors to be started from bottom to top according to the accumulated running time of the compressors until the number of the compressors to be started is reached.
9. the air source heat pump unit of claim 8, wherein the number of compressors to be started is ×, and × is obtained by the formula of × =4.187 × (Tz-Th)Anti-freezing device）/V/3.6/Q0× m1, wherein Tz is the third preset tank temperatureTh anti-freezing temperature of water tank, V volume of water tank, Q0The heating capacity calibrated when a single unit leaves a factory.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303906A (en) * | 2020-10-29 | 2021-02-02 | 青岛海信日立空调系统有限公司 | Heat pump hot water unit and control method |
| CN112629022A (en) * | 2020-12-21 | 2021-04-09 | 珠海格力电器股份有限公司 | Multi-split water heater control method and device and multi-split water heater |
| CN113587201A (en) * | 2021-08-19 | 2021-11-02 | 国孚新能源有限公司 | Control method for air source heat pump centralized heat supply to participate in power grid peak regulation |
| CN113623868A (en) * | 2021-08-17 | 2021-11-09 | 青岛海信日立空调系统有限公司 | Air source heat pump water heater |
| CN115183465A (en) * | 2022-06-23 | 2022-10-14 | 青岛海尔空调电子有限公司 | Control method and control device for heat pump water heater, heat pump water heater and storage medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252399A (en) * | 2011-05-13 | 2011-11-23 | 珠海铨高机电设备有限公司 | Compressor energy regulating and controlling method of modular cold/hot water unit |
| CN107525174A (en) * | 2017-08-17 | 2017-12-29 | 青岛海信日立空调系统有限公司 | A kind of multi-online air-conditioning system and its control method |
| CN108489011A (en) * | 2018-03-20 | 2018-09-04 | 广东美的暖通设备有限公司 | Progress control method, device, air-conditioning water dispenser system and storage medium |
| CN208887120U (en) * | 2018-08-01 | 2019-05-21 | 广东万家乐燃气具有限公司 | A kind of defroster and water heater |
| US20190249901A1 (en) * | 2016-10-27 | 2019-08-15 | King Fahd University Of Petroleum And Minerals | Apparatus for water temperature regulation |
| JP6580530B2 (en) * | 2016-07-29 | 2019-09-25 | トヨタホーム株式会社 | Hot water system |
| EP3368830B1 (en) * | 2015-10-30 | 2019-10-16 | Edilvi SPA | Electronic control unit for plant system management |
| CN111121301A (en) * | 2018-11-01 | 2020-05-08 | 青岛海尔新能源电器有限公司 | Electricity saving amount calculation method of variable-frequency heat pump water heater and heat pump water heater |
| CN111191875A (en) * | 2019-11-28 | 2020-05-22 | 郑州众智科技股份有限公司 | Method for mixed dispatching of unit |
-
2020
- 2020-06-03 CN CN202010494988.7A patent/CN111678255A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252399A (en) * | 2011-05-13 | 2011-11-23 | 珠海铨高机电设备有限公司 | Compressor energy regulating and controlling method of modular cold/hot water unit |
| EP3368830B1 (en) * | 2015-10-30 | 2019-10-16 | Edilvi SPA | Electronic control unit for plant system management |
| JP6580530B2 (en) * | 2016-07-29 | 2019-09-25 | トヨタホーム株式会社 | Hot water system |
| US20190249901A1 (en) * | 2016-10-27 | 2019-08-15 | King Fahd University Of Petroleum And Minerals | Apparatus for water temperature regulation |
| CN107525174A (en) * | 2017-08-17 | 2017-12-29 | 青岛海信日立空调系统有限公司 | A kind of multi-online air-conditioning system and its control method |
| CN108489011A (en) * | 2018-03-20 | 2018-09-04 | 广东美的暖通设备有限公司 | Progress control method, device, air-conditioning water dispenser system and storage medium |
| CN208887120U (en) * | 2018-08-01 | 2019-05-21 | 广东万家乐燃气具有限公司 | A kind of defroster and water heater |
| CN111121301A (en) * | 2018-11-01 | 2020-05-08 | 青岛海尔新能源电器有限公司 | Electricity saving amount calculation method of variable-frequency heat pump water heater and heat pump water heater |
| CN111191875A (en) * | 2019-11-28 | 2020-05-22 | 郑州众智科技股份有限公司 | Method for mixed dispatching of unit |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303906A (en) * | 2020-10-29 | 2021-02-02 | 青岛海信日立空调系统有限公司 | Heat pump hot water unit and control method |
| CN112303906B (en) * | 2020-10-29 | 2023-08-15 | 青岛海信日立空调系统有限公司 | Heat pump hot water unit and control method |
| CN112629022A (en) * | 2020-12-21 | 2021-04-09 | 珠海格力电器股份有限公司 | Multi-split water heater control method and device and multi-split water heater |
| CN112629022B (en) * | 2020-12-21 | 2022-03-01 | 珠海格力电器股份有限公司 | Multi-split water heater control method and device and multi-split water heater |
| CN113623868A (en) * | 2021-08-17 | 2021-11-09 | 青岛海信日立空调系统有限公司 | Air source heat pump water heater |
| CN113587201A (en) * | 2021-08-19 | 2021-11-02 | 国孚新能源有限公司 | Control method for air source heat pump centralized heat supply to participate in power grid peak regulation |
| CN115183465A (en) * | 2022-06-23 | 2022-10-14 | 青岛海尔空调电子有限公司 | Control method and control device for heat pump water heater, heat pump water heater and storage medium |
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Application publication date: 20200918 |