CN108954897B - Multi-unit, terminal distribution system, control method thereof and distributor - Google Patents
Multi-unit, terminal distribution system, control method thereof and distributor Download PDFInfo
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- CN108954897B CN108954897B CN201811092658.4A CN201811092658A CN108954897B CN 108954897 B CN108954897 B CN 108954897B CN 201811092658 A CN201811092658 A CN 201811092658A CN 108954897 B CN108954897 B CN 108954897B
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- 238000009826 distribution Methods 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 83
- 230000000977 initiatory effect Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000009827 uniform distribution Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Other Air-Conditioning Systems (AREA)
- Flow Control (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a multi-connected unit, an end distribution system, a control method thereof and a distributor. The dispenser for uniformly dispensing a fluid, comprising: a hollow housing having an input pipe and a plurality of output pipes respectively communicating with the input pipes; and the rotor is rotatably arranged in the shell and is provided with a distribution cavity, a distribution inlet and a plurality of distribution outlets, the distribution cavity is communicated with the distribution inlet and the distribution outlets, the input pipe is communicated with the distribution inlet, and the output pipe is communicated with the distribution outlets. The rotor can rotate in the process of distributing fluid, so that the fluid can uniformly enter each output pipe under the action of centrifugal force, the same quantity of the fluid output by each output pipe is ensured, the uniform distribution of the fluid is realized, the uniform distribution of the fluid of the tail end distribution system is further ensured, the comfort of the tail end distribution system in use is improved, and the reliability of the multi-connected unit is ensured.
Description
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to a multi-unit, a tail end distribution system, a control method thereof and a distributor.
Background
For the current multi-connected unit, namely the multi-connected cold and hot water unit, the main machine is generally used for preparing chilled water or hot water, and then the chilled water or the hot water is conveyed to an air conditioner with the tail end for a user to adjust air through a pipeline. Compared with a fluorine system multi-split air conditioner, the tail end of the multi-split air conditioner is subjected to water heat exchange, and the tail end is provided with multiple inner machines or multiple outer machines. However, when the tail end waterway system of the multi-connected unit supplies water to a plurality of internal machines, the problem of uneven water flow distribution exists, and the comfort operation of the internal machines is affected.
Disclosure of Invention
Based on the above, it is necessary to provide a multi-unit, an end distribution system, a control method thereof and a distributor capable of uniformly distributing water flow in order to solve the problem of uneven distribution of current water flow.
The above purpose is achieved by the following technical scheme:
A dispenser for uniformly dispensing a fluid, comprising:
A hollow housing having an input pipe and a plurality of output pipes respectively communicating with the input pipes; and
The rotor is rotatably arranged in the shell and is provided with a distribution cavity, a distribution inlet and a plurality of distribution outlets, the distribution cavity is communicated with the distribution inlet and the distribution outlets, the input pipe is communicated with the distribution inlet, and the output pipe is communicated with the distribution outlets.
In one embodiment, the input pipe and the plurality of output pipes are respectively arranged at two opposite sides of the shell.
In one embodiment, the positions of the plurality of output pipes on the housing are located on the outer side of the rotor in the circumferential direction;
and/or a plurality of the distribution outlets are positioned on the circumference side of the rotor rotation axis.
In one embodiment, the dispenser further comprises a driving member disposed outside the housing and connected to the rotor.
In one embodiment, the driving member is located at a side of the housing having an output pipe;
the rotation axis of the driving piece coincides with the rotation center line of the shell.
An end distribution system comprises a plurality of end pipelines, an end heat exchanger arranged on each end pipeline and a distributor according to any technical characteristic;
the plurality of end pipelines are connected to the plurality of output pipes of the distributor.
In one embodiment, the end distribution system further includes a plurality of temperature detecting elements respectively disposed on the plurality of end pipelines for detecting the end ambient temperature.
In one embodiment, the end dispensing system further comprises a flow sensing member disposed at the inlet tube of the dispenser for sensing the actual flow of fluid at the inlet tube.
A control method of an end distribution system, applied to the end distribution system according to any of the above technical features, comprising the following steps:
The rotor of the dispenser is operated at an initial speed for a preset time;
Detecting the end environment temperature in real time, and calculating the end load of the end distribution system according to the end environment temperature; and/or detecting the actual flow in real time, and calculating the flow velocity difference at the input pipe according to the actual flow;
and adjusting the rotating speed of the rotor according to the end load and/or the flow speed difference in the current state at intervals of preset time.
In one embodiment, the step of detecting the end ambient temperature in real time and calculating the end load of the end distribution system based on the end ambient temperature comprises the steps of:
Acquiring the terminal environment temperature of the environment where the terminal heat exchanger is located;
and comparing the end environment temperature with a preset environment temperature, and determining the end load.
In one embodiment, the step of detecting the actual flow in real time and calculating the flow rate difference at the input pipe from the actual flow comprises the steps of:
acquiring the actual flow at an input pipe of the distributor;
Determining an actual flow rate of the input pipe according to the actual flow rate;
Determining a rated flow rate of the input pipe according to the rated flow at the input pipe;
and comparing the actual flow rate with the rated flow rate to determine the flow rate difference.
In one embodiment, the relationship between the rotational speed of the rotor and the end load and the flow rate difference is:
r=α×Δt- β×Δv+r Initial initiation , where α, β are constants, Δt is the end load, Δv is the flow velocity difference, and r Initial initiation is the initial speed of the rotor.
A multiple unit comprising a host system and an end distribution system according to any of the above technical features;
The host system comprises a compressor, a four-way valve, a first heat exchanger, a throttling device, a second heat exchanger and a water pump, wherein the compressor is connected with the four-way valve, the first heat exchanger, the throttling device and the second heat exchanger are circularly connected, the second heat exchanger is also connected with a distributor inlet of the terminal distribution system and the terminal pipeline, and the water pump is positioned between the terminal pipeline and the second heat exchanger.
After the technical scheme is adopted, the invention has at least the following technical effects:
When the distributor distributes fluid, the fluid enters the shell through the input pipe, enters the rotor through the distribution inlet, is distributed through the distribution cavity of the rotor, is sent out of the rotor from the distribution outlet, and flows out of the distributor through the output pipe. The rotor is rotatable in the process of distributing fluid, so that the fluid can uniformly enter each output pipe under the action of centrifugal force, the problem of uneven distribution of current water flow is effectively solved, the same output fluid quantity of each output pipe is ensured, uniform distribution of the fluid is realized, further, uniform fluid distribution of a terminal distribution system is ensured, the comfort of the terminal distribution system in use is improved, and the reliability of the multi-unit is ensured.
Drawings
FIG. 1 is a schematic cross-sectional view of a dispenser according to an embodiment of the invention;
FIG. 2 is an external view of the dispenser shown in FIG. 1;
FIG. 3 is a side view of the dispenser shown in FIG. 1;
FIG. 4 is a schematic view of the dispenser of FIG. 1 as applied to a multi-gang set;
Fig. 5 is a timing diagram of control of the rotor in the dispenser shown in fig. 1.
Wherein:
a 100-end dispensing system;
110-a dispenser;
111-a housing;
112-input tube;
113-an output tube;
114-a rotor; 1141-a dispensing chamber; 1142-a dispensing inlet; 1143-dispensing outlet;
115-a driver;
120-end piping;
130-end heat exchanger;
140-a temperature detecting member;
150-a flow detection member;
200-a host system;
210-a compressor;
220-a four-way valve;
230-a first heat exchanger;
240-throttle device;
250-a second heat exchanger;
260-a water pump;
270-main line;
280-heat exchange pipeline.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the multi-gang set, the end distribution system, the control method thereof and the distributor of the present invention will be described in further detail by examples below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Referring to fig. 1 and 4, the present invention provides a dispenser 110. The dispenser 110 is used to uniformly dispense fluid. The distributor 110 of the present invention is mainly applied to the end distribution system 100 of the multi-unit set, and is used for realizing uniform configuration of end water flow. Of course, in other embodiments of the present invention, the dispenser 110 may be used in other applications where uniform dispensing of fluid is desired. Moreover, the dispenser 110 may dispense gas or other liquids in addition to water. In the present embodiment, only an example in which the dispenser 110 is used to achieve uniform configuration of water flow is described.
Referring to fig. 1-4, in one embodiment, the dispenser 110 includes a housing 111 and a rotor 114. The housing 111 has a hollow structure, and the rotor 114 is rotatably disposed in the housing 111. The housing 111 has an input pipe 112 and a plurality of output pipes 113 respectively communicating with the input pipe 112. The input pipe 112 is used for connecting with the heat exchange pipeline 280 of the end distribution system 100, and the plurality of output pipes 113 are respectively connected with the plurality of end pipelines 120 of the end distribution system 100. The water in the heat exchange pipeline 280 enters the distributor 110 from the input pipe 112 of the shell 111, passes through the inner cavity of the shell 111, enters the corresponding end pipeline 120 from the output pipe 113 of the shell 111, and flows out of the distributor 110.
Optionally, the input pipe 112, the output pipe 113 and the housing 111 are of an integral structure, so that water leakage can be avoided, and reliable operation of the dispenser 110 is ensured. Of course, the input pipe 112, the output pipe 113 and the casing 111 may be provided separately, so long as the sealing property of the joint is ensured. Alternatively, the housing 111 is of cylindrical configuration. Optionally, the apertures of the output pipes 113 are the same, so that the water flow rate output by each output pipe 113 can be further ensured to be the same.
When there is little or too much water flow input at the input tubes 112, each input tube 112 may have a problem of uneven water flow configuration. Therefore, the distributor 110 of the invention is provided with the rotatable rotor 114 in the inner cavity of the shell 111, and ensures that the water flow entering each output pipe 113 is the same through the centrifugal force when the rotor 114 rotates, thereby realizing the uniform configuration of the water flow. Illustratively, the rotor 114 has a distribution chamber 1141, a distribution inlet 1142, and a plurality of distribution outlets 1143, the distribution chamber 1141 communicating the distribution inlet 1142 with the plurality of distribution outlets 1143, the input pipe 112 communicating with the distribution inlet 1142, and the output pipe 113 communicating with the distribution outlets 1143. Optionally, the rotor 114 is a rotatable cylinder. This ensures that the rotor 114 rotates smoothly within the housing 111, avoiding interference.
The water entering from the input pipe 112 enters the distribution chamber 1141 of the rotor 114 through the distribution inlet 1142 of the rotor 114, and the water in the distribution chamber 1141 can uniformly flow out from the input outlet under the centrifugal force, and enter the output pipe 113 of the housing 111 to be sent out. Moreover, dispensing inlet 1142 is positioned adjacent to input tube 112, which may reduce the water entry path. Preferably, the distribution inlet 1142 corresponds to the input pipe 112, and the input pipe 112 may extend into the distribution inlet 1142, so that water in the heat exchange pipe 280 directly enters the distribution chamber 1141 through the input pipe 112, thereby avoiding leakage of water. The distribution outlet 1143 is disposed adjacent to the output pipes 113, so as to reduce the outflow path of water and ensure uniform flow rate of water output by each output pipe 113.
When the distributor 110 of the present invention distributes the fluid, the fluid enters the housing 111 through the input pipe 112, enters the rotor 114 through the distribution inlet 1142, is distributed through the distribution chamber 1141 of the rotor 114, and then is sent out of the rotor 114 from the distribution outlet 1143, and flows out of the distributor 110 through the output pipe 113. The rotor 114 can rotate in the process of distributing the fluid, so that the fluid can uniformly enter each output pipe 113 under the action of centrifugal force, the problem of uneven distribution of the current water flow is effectively solved, the same output fluid quantity of each output pipe 113 is ensured, the uniform distribution of the fluid is realized, the uniform distribution of the fluid of the tail end distribution system 100 is further ensured, the comfort of the tail end distribution system 100 in use is improved, and the reliability of the multi-unit is ensured.
In one embodiment, the input pipe 112 and the plurality of output pipes 113 are disposed on opposite sides of the housing 111. That is, the input pipe 112 and the output pipe 113 are located on two non-adjacent surfaces of the housing 111, and water can enter from one end of the housing 111 and flow out from the other end. This can avoid problems such as short circuit of water flow and large pressure loss, and improve the distribution efficiency of the distributor 110.
In one embodiment, the plurality of dispensing outlets 1143 are located circumferentially about the axis of rotation of the rotor 114. Thus, when the rotor 114 rotates, the water in the distribution chamber 1141 of the rotor 114 flows uniformly to the inner wall of the distribution chamber 1141 under the centrifugal force, and flows out from the distribution outlet 1143 on the outer peripheral side of the rotor 114, so that the water is ensured to uniformly flow out from the distribution outlet 1143 and flow out through the output pipe 113.
In one embodiment, the positions of the plurality of output pipes 113 on the housing 111 are located circumferentially outward of the rotor 114. That is, the plurality of output pipes 113 are distributed on the outer ring of the rotor 114 as shown in fig. 1 and 3. In this way, the water sent from the distribution outlet 1143 on the peripheral side of the rotor 114 can be directly sent out through the output pipe 113, so as to ensure that the water flow of the output pipe 113 is sufficient, ensure that the terminal distribution system 100 operates reliably, and further ensure the usability of the multi-unit. If the outlet pipe 113 is located inside the rotor 114 at the position of the housing 111, the rotor 114 will block water from entering the outlet pipe 113, and affect the water flow of the outlet pipe 113.
In one embodiment, the dispenser 110 further includes a driving member 115 disposed outside the housing 111 and connected to the rotor 114. The driving member 115 is a power source for rotation of the rotor 114. Alternatively, the driving member 115 is a motor, and of course, the driving member 115 may have other structures for realizing rotation driving. In this embodiment, the driving member 115 is an asynchronous motor. Rotor 114 is driven to rotate by an asynchronous motor.
It will be appreciated that the drive 115 is controlled by the control system of the multi-gang. Therefore, the number of controllers can be reduced, the multi-unit can perform centralized control on the components of the multi-unit, and the operation is convenient. The control system of the multi-gang set can control the start and stop of the asynchronous motor, and further control the rotation and stop of the rotor 114. The control system of the linkage unit can also adjust the output rotation speed of the asynchronous motor, and further adjust the rotation speed of the rotor 114, so as to adjust the flow rate of water in the output pipe 113.
Moreover, the water flow at the output pipe 113 of the distributor 110 is proportional to the rotational speed r of the rotor 114 within the distributor 110. That is, the rotational speed r of the rotor 114 increases, and the water flow rate at the output pipe 113 correspondingly increases, whereas the rotational speed r of the rotor 114 decreases, and the water flow rate at the output pipe 113 correspondingly decreases. The adjustment of the rotational speed of the rotor 114 is described in detail later.
In one embodiment, the driver 115 is located on the side of the housing 111 having the output tube 113. This facilitates the connection of the driving member 115 with the rotor 114 in the housing 111, facilitating the rotational driving control of the rotor 114. The rotational axis of the driver 115 coincides with the rotational center line of the housing 111. This ensures that the rotor 114 rotates smoothly within the housing 111.
Referring to fig. 4, an embodiment of the present invention provides an end distribution system 100, which includes a plurality of end pipes 120, an end heat exchanger 130 disposed at each end pipe 120, and the distributor 110 in the above embodiment. The plurality of end pipes 120 are connected to the plurality of output pipes 113 of the distributor 110. The end distribution system 100 is used to exchange heat with an end, which is referred to herein as an indoor space. The end distribution system 100 exchanges heat with the indoor space, and can perform refrigeration or heating treatment on the indoor space so as not to meet the use requirement of a user. The end distribution system 100 of the invention adopts the distributor 110 to realize the uniform distribution of the inflow water flow, so that the cold water and the hot water of the main machine of the multi-unit can be uniformly distributed, and the service performance of the end distribution system 100 is ensured.
Specifically, one end of the distributor 110 is connected to the host system 200 of the multi-unit set through an input pipe 112, the other end of the distributor 110 is respectively connected to a plurality of end pipelines 120 through a plurality of output pipes 113, and at least one end heat exchanger 130 is disposed on each end pipeline 120. The end heat exchanger 130 is located in the indoor space, and the indoor space is cooled and heated by the end heat exchanger 130. Alternatively, the indoor heat exchanger may be a fan disc, a fin heat exchanger, a tube heat exchanger, or other type of end indoor unit. In this embodiment, the distributor 110 is connected to four end pipes 120, and the end heat exchangers 130 on the four end pipes 120 are arranged in parallel. Of course, in other embodiments of the invention, the number of end channels 120 may be greater or lesser, with the number of end heat exchangers 130 corresponding to the number of end channels 120.
In one embodiment, the end dispensing system 100 further includes a plurality of temperature detecting members 140 disposed on the plurality of end pipes 120, respectively, for detecting the end ambient temperature. That is, the temperature detecting member 140 may detect the temperature of the indoor space environment corresponding to the end heat exchanger 130 in real time. And, the temperature detecting member 140 is electrically connected with the control system of the multi-gang set to transmit the end ambient temperature into the control system. The control system stores the preset temperature of the end environment, and after comparing the temperature of the end environment with the preset temperature, the temperature difference of the end environment can be determined, namely, the end load is determined, and the control system adjusts the rotating speed of the rotor 114 through the end load.
Specifically, the preset temperature of the terminal environment (i.e., the set temperature) is denoted as T Presetting , the terminal environment temperature (i.e., the actual temperature of the indoor space) is denoted as the temperature of the temperature detecting element 140, denoted as T Room temperature , and the terminal load (i.e., the temperature difference of the terminal environment) is denoted as Δt=t Room temperature -T Presetting . The large end load means that the temperature difference between the end ambient temperature and the preset temperature is large, and more chilled water or hot water is needed for heat exchange. Conversely, chilled or hot water required for small end loads is also reduced.
As the end load increases, i.e., Δt, the water flow required by the end dispensing system 100 increases, and the rotational speed of the rotor 114 within the dispenser 110 correspondingly increases to ensure that sufficient water flow is output. Therefore, the rotational speed r of the rotor 114 and Δt are in positive correlation. In this way, the rotor 114 speed r can be adjusted according to the actual end load Δt demand to control the water flow of the outlet pipe 113 of the dispenser 110.
In one embodiment, the end dispensing system 100 further includes a flow sensing member 150 disposed at the input tube 112 of the dispenser 110 for sensing the actual flow of fluid at the input tube 112. That is, the flow rate detecting member 150 may detect the input flow rate of the dispenser 110. Since the cross-sectional area of the input pipe 112 is constant, the actual flow rate of water at the input pipe 112 can be calculated. And, the flow sensing member 150 is electrically connected with the control system of the multi-gang set to transmit the actual flow rate of water in the input pipe 112 into the control system. The control system stores the rated flow rate of the water in the input pipe 112, determines the rated flow rate of the water through the rated flow rate, compares the actual flow rate with the rated flow rate, determines the flow rate difference of the water at the input pipe 112, and adjusts the rotating speed of the rotor 114 through the flow rate difference. This avoids surge or jamming of the end dispensing system 100.
Specifically, the rated flow rate of water at the input pipe 112 of the distributor 110 is Q Rated for , the actual flow rate of water at the input pipe 112 detected by the flow rate detecting member 150 is Q Actual practice is that of , and the sectional area at the input pipe 112 is S. Accordingly, the rated flow rate of water at the input pipe 112 is V Rated for ＝Q Rated for /S, and the actual flow rate of water at the input pipe 112 is V Actual practice is that of ＝Q Actual practice is that of /S. The input tube 112 flow rate difference Δv=v Actual practice is that of -V Rated for .
As the water flow in the inlet pipe 112 increases, both Δv and the water flow at the outlet pipe 113 increase accordingly, which tends to cause load fluctuations in the end distribution system 100. At this time, the rotational speed of the rotor 114 in the distributor 110 is reduced, stabilizing the outflow rate. Therefore, the rotational speed r of the rotor 114 is inversely related to Δv. In this way, rotor 114 speed r may be adjusted according to the demand for flow rate differential DeltaV to ensure reliable operation of end dispense system 100.
Alternatively, the temperature detecting member 140 may be a bulb or a sensor. Of course, the temperature detecting element 140 may be other temperature sensing elements that can detect temperature. The flow rate detecting member 150 is a flow meter or the like.
It will be appreciated that the rotational speed of the rotor 114 may be adjusted solely by feedback of the end load, or the rotational speed of the rotor 114 may be adjusted solely by feedback of the flow rate difference, although the rotational speed of the rotor 114 may also be adjusted solely by feedback of both the end load and the flow rate difference.
An embodiment of the present invention further provides a control method of an end distribution system, which is applied to the end distribution system 100 in the above embodiment, and includes the following steps:
the rotor 114 of the dispenser 110 is operated at an initial speed for a preset time;
detecting the end ambient temperature in real time and calculating an end load of the end distribution system 100 based on the end ambient temperature; and/or detecting the actual flow in real time and calculating a flow rate difference at the input pipe 112 from the actual flow;
The rotational speed of the rotor 114 is adjusted at predetermined intervals according to the end load and/or the flow speed difference in the current state.
The end dispensing system 100 may be divided into start-up and control phases during operation. During the start-up phase, the asynchronous motor starts and drives the rotor 114 of the dispenser 110 to rotate at an initial speed r Initial initiation and to run for a preset time t 1. In the control phase, the temperature detector 140 detects the end ambient temperature T Room temperature , the control system calculates the end load Δt of the end distribution system 100 from the end ambient temperature T Room temperature , and/or the flow detector 150 detects the actual flow Q Actual practice is that of of water at the input pipe 112, and the control system calculates the flow rate difference Δv of the end distribution system 100 from the actual flow Q Actual practice is that of . The rotational speed r of the rotor 114 is adjusted at predetermined intervals, specifically, the rotational speed of the rotor 114 is adjusted according to the end load and/or the flow speed difference in the current state. It will be appreciated that the predetermined time may be a few seconds or even tens of seconds or the like.
As shown in fig. 5, during the start-up phase of the dispenser 110, the rotor 114 moves to a preset time t 1 at an initial speed r Initial initiation , during which the initial speed r Initial initiation is a constant speed. When the distributor 110 is in the control stage, the rotor 114 adjusts the rotation speed r of the rotor 114 according to the actual situation every preset time, so that the rotation speed r of the rotor 114 fluctuates up and down at r Initial initiation to realize the adjustment of the water flow at the output pipe 113.
In one embodiment, the step of detecting the end ambient temperature in real time and calculating the end load of the end distribution system 100 based on the end ambient temperature comprises the steps of:
acquiring the end ambient temperature of the environment in which the end heat exchanger 130 is located;
And comparing the end environment temperature with a preset environment temperature, and determining the end load.
The control system obtains an end environment temperature T Room temperature , stores a preset end environment temperature T Presetting in the control system, and compares the end environment temperature with the preset environment temperature, i.e., an end load Δt=t Room temperature -T Presetting . As the end load increases, i.e., Δt, the water flow rate required by the end distribution system 100 increases and the rotational speed of the rotor 114 within the distributor 110 correspondingly increases. Thus, the rotor 114 speed r can be adjusted according to the actual end load Δt requirement to control the water flow from the outlet pipe 113 of the dispenser 110.
In one embodiment, the step of detecting the actual flow in real time and calculating the flow rate difference at the input pipe 112 based on the actual flow comprises the steps of:
acquiring the actual flow at the input pipe 112 of the distributor 110;
Determining an actual flow rate of the input pipe 112 based on the actual flow rate;
determining a nominal flow rate of the input pipe 112 based on the nominal flow rate at the input pipe 112;
And comparing the actual flow rate with the rated flow rate to determine a flow rate difference.
The control system obtains the actual flow rate of water at the input pipe 112, which is detected by the flow detecting member 150, as Q Actual practice is that of , and the cross-sectional area at the input pipe 112 is S. The control system determines the actual flow rate, V Actual practice is that of ＝Q Actual practice is that of /S, of the input pipe 112 from the actual flow. The control system stores the rated flow rate Q Rated for of water in the input pipe 112, and determines the rated flow rate V Rated for ＝Q Rated for /S of water through the rated flow rate Q Rated for . By comparing the actual flow rate with the nominal flow rate, the flow rate difference Δv=v Actual practice is that of -V Rated for of the water at the input pipe 112 can be determined, and the control system adjusts the rotational speed of the rotor 114 by means of the flow rate difference. This avoids surge or jamming of the end dispensing system 100.
In one embodiment, the relationship between the rotational speed of rotor 114 and the end load and flow rate differences is:
r=α×Δt- β×Δv+r Initial initiation , where α, β are constants, Δt is an end load, Δv is a flow velocity difference, and r Initial initiation is an initial speed of the rotor 114.
The control system can realize the adjustment of the rotating speed of the rotor 114 according to the common feedback of the tail end load delta T and the flow speed difference delta V, so that the water flow of the output pipe 113 can be corrected according to the requirement of a user and the actual water flow to match the water flow actually required by the tail end, and meanwhile, the surge or blockage of the tail end distribution system 100 can be avoided, so that the use performance of the tail end distribution system 100 is ensured, and the use comfort of the user is improved.
An embodiment of the present invention further provides a multi-gang set including a host system 200 and the end distribution system 100 in the above embodiment. The host system 200 includes a compressor 210, a four-way valve 220, a first heat exchanger 230, a throttle device 240, a second heat exchanger 250, and a water pump 260, wherein the compressor 210 is connected to the four-way valve 220, the first heat exchanger 230, the throttle device 240, and the second heat exchanger 250 are circularly connected, the second heat exchanger 250 is also connected to an inlet of the distributor 110 and the end pipeline 120 of the end distribution system 100, and the water pump 260 is located between the end pipeline 120 and the second heat exchanger 250.
The host system 200 also includes a main line 270 and a heat exchange line 280. The main pipe 270 is circularly connected with the four-way valve 220, the first heat exchanger 230, the throttling device 240 and the second heat exchanger 250. The heat exchange line 280 is circularly connected to the end distribution system 100, the water pump 260 and the second heat exchanger 250. The fluid passing through the main pipe 270 exchanges heat with the water in the heat exchange pipe 280 in the second heat exchanger 250, so that the heated or cooled water enters the end heat exchanger 130 to heat or cool the indoor space. After the multi-unit machine set adopts the terminal distribution system 100, the water flow can be uniformly distributed, and the use comfort of a user can be improved. Optionally, throttle device 240 is an electronic expansion valve.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be regarded as the description scope of the present specification.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (11)
1. A method of controlling an end dispensing system, comprising the steps of:
The rotor (114) of the dispenser (110) is operated at an initial speed for a preset time; the distributor (110) is used for uniformly distributing fluid and comprises a hollow shell (111) and a rotor (114) rotatably arranged in the shell (111), the shell (111) is provided with an input pipe (112) and a plurality of output pipes (113) communicated with the input pipe (112) respectively, the rotor (114) is provided with a distribution cavity (1141), a distribution inlet (1142) and a plurality of distribution outlets (1143), the distribution cavity (1141) is communicated with the distribution inlet (1142) and the distribution outlets (1143), the input pipe (112) is communicated with the distribution inlet (1142), and the output pipes (113) are communicated with the distribution outlets (1143);
detecting an end ambient temperature in real time and calculating an end load of an end distribution system (100) from said end ambient temperature; and/or detecting the actual flow in real time and calculating a flow velocity difference at the input pipe (112) from the actual flow;
-adjusting the rotational speed of the rotor (114) at predetermined intervals in dependence of the end load and the flow speed difference in the current state;
wherein the relation between the rotational speed of the rotor (114) and the end load and the flow velocity difference is:
r=α×Δt- β×Δv+r Initial initiation , where α, β are constants, Δt is the end load, Δv is the flow velocity difference, and r Initial initiation is the initial speed of the rotor (114).
2. The control method according to claim 1, wherein the step of detecting the end ambient temperature in real time and calculating the end load of the end distribution system (100) from the end ambient temperature comprises the steps of:
Acquiring the end ambient temperature of the environment in which an end heat exchanger (130) is located;
and comparing the end environment temperature with a preset environment temperature, and determining the end load.
3. The control method according to claim 1, characterized in that the step of detecting an actual flow in real time and calculating a flow velocity difference at an input pipe (112) from the actual flow comprises the steps of:
-obtaining said actual flow at an input pipe (112) of said distributor (110);
Determining an actual flow rate of the input pipe (112) from the actual flow rate;
-determining a nominal flow rate of the input pipe (112) from a nominal flow rate at the input pipe (112);
and comparing the actual flow rate with the rated flow rate to determine the flow rate difference.
4. The control method according to claim 1, wherein the input pipe (112) and the plurality of output pipes (113) are provided on opposite sides of the housing (111).
5. The control method according to claim 1, characterized in that the positions of the plurality of output pipes (113) on the housing (111) are located on the circumferential outside of the rotor (114);
And/or a plurality of said dispensing outlets (1143) are located on the peripheral side of the axis of rotation of said rotor (114).
6. The control method according to any one of claims 1 to 5, characterized in that the dispenser (110) further comprises a driving member (115) arranged outside the housing (111) and connected to the rotor (114).
7. The control method according to claim 6, characterized in that the driving element (115) is located on the side of the housing (111) having the output pipe (113);
The axis of rotation of the drive member (115) coincides with the center line of rotation of the rotor (114) in the housing (111).
8. An end distribution system, characterized in that it comprises a plurality of end pipes (120), an end heat exchanger (130) provided to each of said end pipes (120) and a distributor (110), controlled by a control method according to any one of claims 1-7;
A plurality of said end pipes (120) are connected to a plurality of output pipes (113) of said distributor (110).
9. The tip dispensing system of claim 8, wherein the tip dispensing system (100) further comprises a plurality of temperature sensing elements (140) disposed on a plurality of the tip lines (120) for sensing a tip ambient temperature.
10. The end dispensing system according to claim 8 or 9, wherein the end dispensing system (100) further comprises a flow detection member (150) arranged at the input pipe (112) of the dispenser (110) for detecting the actual flow of fluid at the input pipe (112).
11. A multi-gang set comprising a host system (200) and an end distribution system (100) according to any of claims 8 to 10;
The host system (200) comprises a compressor (210), a four-way valve (220), a first heat exchanger (230), a throttling device (240), a second heat exchanger (250) and a water pump (260), wherein the compressor (210) is connected to the four-way valve (220), the first heat exchanger (230), the throttling device (240) and the second heat exchanger (250) are circularly connected, the second heat exchanger (250) is further connected to an inlet of a distributor (110) of the terminal distribution system (100) and the terminal pipeline (120), and the water pump (260) is located between the terminal pipeline (120) and the second heat exchanger (250).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811092658.4A CN108954897B (en) | 2018-09-19 | 2018-09-19 | Multi-unit, terminal distribution system, control method thereof and distributor |
| RU2021100507A RU2756611C1 (en) | 2018-09-19 | 2018-12-12 | Block with multiple connections, final distribution system and method to control it, and distributor |
| PCT/CN2018/120614 WO2020056940A1 (en) | 2018-09-19 | 2018-12-12 | Multi-connected unit, end distribution system and method for controlling same, and distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811092658.4A CN108954897B (en) | 2018-09-19 | 2018-09-19 | Multi-unit, terminal distribution system, control method thereof and distributor |
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| Publication Number | Publication Date |
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| CN108954897A CN108954897A (en) | 2018-12-07 |
| CN108954897B true CN108954897B (en) | 2024-05-21 |
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| CN201811092658.4A Active CN108954897B (en) | 2018-09-19 | 2018-09-19 | Multi-unit, terminal distribution system, control method thereof and distributor |
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| Country | Link |
|---|---|
| CN (1) | CN108954897B (en) |
| RU (1) | RU2756611C1 (en) |
| WO (1) | WO2020056940A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954897B (en) * | 2018-09-19 | 2024-05-21 | 珠海格力电器股份有限公司 | Multi-unit, terminal distribution system, control method thereof and distributor |
| CN109945431B (en) * | 2019-03-20 | 2020-11-24 | 珠海格力电器股份有限公司 | Temperature adjusting method, device and system and air conditioner |
| CN110131863A (en) * | 2019-05-13 | 2019-08-16 | 珠海格力电器股份有限公司 | Regulator, flow regulating method and air conditioner |
| CN110131931A (en) * | 2019-06-25 | 2019-08-16 | 北京鑫红苑制冷设备工程有限公司 | Spiral centrifugal dispenser |
| CN111780595B (en) * | 2020-06-23 | 2021-10-29 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Heat exchange plate and micro-channel heat exchanger |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108954897A (en) | 2018-12-07 |
| WO2020056940A1 (en) | 2020-03-26 |
| RU2756611C1 (en) | 2021-10-04 |
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