CN103134231A - Tree-joint-control system and control scheme thereof - Google Patents
Tree-joint-control system and control scheme thereof Download PDFInfo
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- CN103134231A CN103134231A CN2011103819266A CN201110381926A CN103134231A CN 103134231 A CN103134231 A CN 103134231A CN 2011103819266 A CN2011103819266 A CN 2011103819266A CN 201110381926 A CN201110381926 A CN 201110381926A CN 103134231 A CN103134231 A CN 103134231A
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Abstract
The invention provides a tree-joint-control system and a control scheme thereof. The tree-joint-control system supplies indoor refrigerating and heating and supplies domestic hot water. The operation mode of a set comprises pure refrigerating, pure heating, pure water heating, cold and heat recovery, and both heating and water heating. The tree-joint-control system comprises at least one indoor set, a main machine and a water tank component. The indoor set and the main machine are connected through a refrigerant pipe, and the main machine supplies indoor set refrigerants to achieve refrigerating or heating. The water tank component and the main machine are connected through a water pipeline, and the main machine supplies the water tank component with hot water. The control scheme comprises a set of control system and a control method. The control system collects an environment temperature, an indoor temperature, a set temperature, a hot water heat exchanger water inlet temperature, a hot water heat exchanger water outlet temperature, a water tank temperature and a water outlet set temperature to control the main machine, an indoor machine and the water tank component to operate. The energy saving effect of the clod and hot recovery is guaranteed to be achieved, an inverter compressor is used in the main machine, frequencies are changed to supply outlet water with appropriate temperatures to customers, water blending is avoided, and therefore energy consumption is reduced.
Description
Technical field
This patent belongs to the refrigerated air-conditioning system design, when satisfying the demand of client's cooling and warming and water heating, reduces units consumption, and can improve the reliability of unit, belongs to field of Refrigeration and Air-conditioning.
Background technology
Teat pump boiler has adopted contrary Carnot cycle, utilize heat exchanger to absorb the heat of low-temperature heat source, utilize in the compressor pump entry, its efficiency is high, cleaning, as an energy-saving clean technology, obtain the support energetically of the departments of science and technology, environmental administration also releases relevant preferential policy, form according to its low-temperature heat source, be divided into air source hot pump water heater, water source heat pump water heater, the associated heating resources Teat pump boiler, basically identical due to its circulation theory and air conditioner, and there are some can mutually borrow the power part, in the time of as summer, the room heat is pumped in water, realize free water heating, the hot water demand is generally less than the air-conditioning demand in addition, the water heating time is not long, air-conditioning neither use all day long simultaneously, can utilize free time, carry out water heating, thereby save a compressor and low-temperature heat source heat exchanger and corresponding parts, the installing space of also saving in addition.Occupy these advantages, client and house developer more and more parent are looked at this series products.Many air-conditionings manufacturer, water heater manufacturer also concentrates on this field with the emphasis of research and development.
the generally design of three present alliance units is that hot water heat exchanger is positioned between compressor air-discharging and four-way change-over valve, this design comparison is simple, but can only when opening, air-conditioning just can obtain hot water, the risk of single water heating is larger, the one, the operation of cross valve band liquid, dangerous, the entrance of the second condenser is with a large amount of liquid, cause the liquid storage of condenser sharply to increase, so just require unit that a large reservoir will be arranged, be used for cold-producing medium demand under the different operating modes of balance, unit need to fill the stable operation that a large amount of cold-producing mediums guarantees unit simultaneously, if there is no these assurances, unit easily lacks refrigerant under some operating mode, efficiency is low, the compressor operating operating mode is abominable.
Another common design is that hot water heat exchanger and four-way change-over valve is in parallel, and this scheme is complicated, is difficult to guarantee the reliability of unit, in service must have a heat exchanger to be in shut down condition, increases the possibility of hydrops, in addition after the high temperature of this scheme with hot water heating to 55～60 degree, be stored in boiler, when needing hot water, then the hot water of boiler is taken out, be watered, convert rear one-tenth warm water, about 40 degree clean and bathing, have so just produced thermal losses.Compressor often operates under high pressure, large pressure reduction state, and compressor displacement is fragile.
Summary of the invention
The present invention is according to the demand and shortcoming, provide a kind of combined supply system with and control program, this system provides indoor refrigeration, heats and supplies the domestic hot-water of suitable temperature, and the operational mode of unit comprises simple refrigeration, heats merely, refrigerating part recuperation of heat, the full recuperation of heat of freezing, heat water heating simultaneously.This system comprises at least one indoor units, main frame and cistern assembly.Connect by refrigerant pipe between indoor units and main frame, cistern assembly hot water is provided step by step.Control program comprises cover control system and a control method, this control system has gathered environment temperature, indoor temperature, design temperature, hot water heat exchanger inflow temperature, hot water heat exchanger leaving water temperature, water tank temperature, water outlet design temperature, come the operation of main control system, indoor set, cistern assembly, guaranteed that the refrigeration recuperation of heat reaches energy-saving effect, main frame adopts frequency-changeable compressor, the water outlet that rotating speed by the variable compression machine provides suitable temperature has been avoided being watered to the client, thereby reduces energy consumption.
This concrete system comprises main frame, at least one indoor unit, cistern assembly and corresponding connecting line, wherein main frame comprise contain at least one can freeze, heat, the refrigerant system of water heating, and to the master machine control unit that this unit is controlled, the rotating speed that can adjust compressor with the cold-producing medium of water feed-tank assembly that suitable temperature is provided, corresponding discharge to indoor set; Indoor unit is fan coil, contains a controlled restriction, as electric expansion valve; Cistern system can regulating water flow, and the flow direction that can regulate water.The refrigerant system of main frame comprises speed variable compressor, the first magnetic valve, four-way change-over valve, hot water heat exchanger, the second magnetic valve, the second electric expansion valve, the 3rd magnetic valve, the first electric expansion valve, condenser, gas divides and corresponding pipeline; The first magnetic valve is installed between the exhaust connector of compressor air-discharging and four-way change-over valve, and the second magnetic valve is installed between compressor air-discharging and hot water heat exchanger gas phase mouth; The 3rd magnetic valve is installed between hot water heat exchanger liquid phase mouth and low pressure port; The second electric expansion valve is installed between hot water heat exchanger liquid phase mouth and liquid pipeline; The first electric expansion valve is installed between condenser liquid phase mouth and liquid pipeline.Cistern assembly comprises a press-bearing water tank, the first waterway electromagnetic valve, the second waterway electromagnetic valve, moisturizing check valve, water circulating pump and relevant pipeline, it is characterized in that press-bearing water tank has filling pipe end and the lower mouth of a river, filling pipe end second waterway electromagnetic valve of directly ining succession wherein, the second waterway electromagnetic valve, the first waterway electromagnetic valve and water delivery port are connected the water route threeway and connect, and the lower mouth of a river of press-bearing water tank, running water moisturizing are connected the water route threeway and are connected with pump intake.
The invention provides a control program for this combined supply system, comprise a cover control system and corresponding control method.Control system is by interior machine controller, indoor temperature transmitter, console controller, outdoor temperature sensor, hot water heat exchanger inflow temperature sensor, hot water heat exchanger leaving water temperature sensor, hot water temperature sensor, running water temperature sensor, water demand input; Console controller is formulated the unit operational mode according to gathering temperature, room conditioning demand, the water demand input of coming, and controls each components and parts to realize corresponding function.Each controlled components and parts comprise variable speed compressor, four-way change-over valve, the first magnetic valve, the second magnetic valve, the 3rd magnetic valve, the first electric expansion valve, the second electric expansion valve, indoor set electric expansion valve, indoor fan, the first waterway electromagnetic valve, the second waterway electromagnetic valve, water pump.The unit operation pattern comprises that machine freezes merely, heats merely, refrigerating part recuperation of heat, the full recuperation of heat of freezing, heat water heating simultaneously.
Refrigeration mode wherein, the refrigeration demand that depends on indoor set, the action of host computer control all parts, wherein the first magnetic valve be in open mode, the second magnetic valve be in closed condition, four-way change-over valve be in refrigerating state, the second expansion valve be in closed condition, the 3rd magnetic valve be in open mode, indoor set electric expansion valve according to the degree of superheat and demand control, compressor rotary speed regulates according to demand.
Heating mode wherein, the demand that heats that depends on indoor set, the action of host computer control all parts, wherein the first magnetic valve be in open mode, the second magnetic valve be in closed condition, four-way change-over valve be in the state of heating, the second expansion valve be in closed condition, the 3rd magnetic valve be in open mode, indoor set electric expansion valve according to the degree of superheat and demand control, the first electric expansion valve according to the degree of superheat control, compressor rotary speed regulates according to demand.
Water heating pattern wherein, the hot water demand of depending on the water side, console controller controls that the first magnetic valve is in that closed condition, the second magnetic valve are in that open mode, four-way change-over valve are in that the state of heating, the second expansion valve are in that semi-open state, the 3rd magnetic valve are in that closed condition, indoor set electric expansion valve are closed, the first electric expansion valve according to the degree of superheat control, compressor rotary speed regulates according to demand.
Refrigerating part heat recovery mode wherein, depend on the hot water demand of water side and indoor refrigeration demand, refrigeration demand is higher than the hot water demand, console controller control the first magnetic valve be in opening, the second magnetic valve be in opening, four-way change-over valve be in refrigerating state, the second expansion valve be in complete opening, the 3rd magnetic valve be in closed condition, indoor set electric expansion valve according to the degree of superheat and demand control, compressor rotary speed regulates according to the indoor set demand.
The full heat recovery mode of wherein freezing, depend on the hot water demand of water side and indoor refrigeration demand, refrigeration demand approximates the hot water demand, console controller control the first magnetic valve be in closed condition, the second magnetic valve be in opening, four-way change-over valve be in refrigerating state, the second expansion valve be in complete opening, the 3rd magnetic valve be in closed condition, indoor set electric expansion valve according to the degree of superheat and demand control, compressor rotary speed regulates according to the indoor set demand.
Wherein heat simultaneously the water heating pattern, depend on the hot water demand of water side and indoor refrigeration demand, console controller is controlled the first magnetic valve and is in opening, the second magnetic valve and is in opening, four-way change-over valve and is in the state of heating, the second expansion valve and is in complete opening, the 3rd magnetic valve and is in that closed condition, indoor set electric expansion valve are controlled according to demand, compressor rotary speed is regulated according to indoor set demand and hot water demand's sum.
The client measures by hot water end input hot water demand: large, medium and small, be defaulted as trace.In the situation that the trace or do not input, the hot water that the client obtains comes self heating water tank.In the situation that in a small amount, the client decides according to unit ruuning situation (freeze, heat) at that time, if be refrigeration, adopt refrigerating part recuperation of heat form, if for heating, adopt to heat water heating simultaneously, increase compressor rotary speed, guarantee leaving water temperature, cistern assembly enters the low discharge pattern.In the situation that intermediate flow, the client decides according to unit ruuning situation (freeze, heat) at that time, if be refrigeration, when the indoor set demand is large, adopt refrigerating part recuperation of heat form, if indoor set demand hour adopts the full recuperation of heat form of refrigeration, cistern assembly enters the intermediate flow pattern; If for heating, adopt to heat water heating simultaneously, compressor rotary speed increases, and guarantees leaving water temperature, and leaving water temperature does not still reach requirement, reduces the indoor set load, preferentially guarantees the hot water supply.In the situation that large flow, the client decides according to unit ruuning situation (freeze, heat) at that time, if be refrigeration, adopts the full recuperation of heat form of refrigeration, and cistern assembly enters large flow rate mode; If for heating, adopt to heat water heating simultaneously, compressor rotary speed increases, and guarantees leaving water temperature, and leaving water temperature does not still reach requirement, reduces the indoor set load, preferentially guarantees the hot water supply.
Wherein micro-hot water demand's pattern belongs to default mode, and console controller is controlled the first waterway electromagnetic valve and is in that closed condition, the second waterway electromagnetic valve are in opening, water pump is in halted state; A small amount of hot water demand's pattern, the first waterway electromagnetic valve are in that opening, the second waterway electromagnetic valve are in closed condition, water pump is in halted state; Moderate fever water demand pattern, the first waterway electromagnetic valve are in that opening, the second waterway electromagnetic valve are in closed condition, water pump is in running status; Large hot water volume's demand model, its feature is characterized in that the first waterway electromagnetic valve is in that opening, the second waterway electromagnetic valve are in opening, water pump is in running status.
Description of drawings
Fig. 1 is systematic schematic diagram
1, host subsystem; 2, interior loom system; 3, cistern assembly; 11, frequency-changeable compressor; 12, the first magnetic valve; 13, four-way change-over valve; 14, hot water heat exchanger; 15, master machine control unit; 16, the second magnetic valve; 17, the second electric expansion valve; 18, the 3rd magnetic valve; 19, the first electric expansion valve; 21 interior machine blower fans; 22, interior machine radiator; 23, indoor set electric expansion valve; 24, interior machine control module; 25, indoor temperature transmitter; 31, the first waterway electromagnetic valve; 32, boiler; 33, water pump; 34, moisturizing check valve; 35, the second waterway electromagnetic valve.
The specific embodiment:
Refrigeration mode:
Interior machine sends the refrigeration signal, triggers this pattern.Main frame the first magnetic valve (12) be in open mode, the second magnetic valve (16) be in closed condition, four-way change-over valve (13) be in refrigerating state, the second expansion valve (17) be in closed condition, the 3rd magnetic valve (18) be in open mode, indoor set electric expansion valve (23) according to the degree of superheat and demand control, compressor rotary speed regulates according to demand.Cold-producing medium is discharged by compressor, through the first magnetic valve (12), four-way change-over valve (13), enter condenser, discharge after condenser condenses, through liquid line, enter indoor set, through the throttling expansion of interior organic electronic expansion valve (23), evaporation is discharged in indoor set heat exchanger (22), divides, gets back to compressor through gas piping, four-way change-over valve (13), gas.Form a process of refrigerastion.
Heating mode:
Claims (10)
1. combined supply system, comprise main frame (1), at least one indoor unit (2), cistern assembly (3) and corresponding connecting line, it is characterized in that: 1) main frame (1) rotating speed that can adjust compressor with the cold-producing medium of water feed-tank assembly that suitable temperature is provided, corresponding discharge to indoor set; 2) indoor unit is fan coil, contains a controlled restriction (23), as electric expansion valve; 3) cistern system can regulating water flow, and the flow direction that can regulate water.
Main computer unit according to claim 1 (1) comprise contain at least one can freeze, heat, the refrigerant system of water heating, and the master machine control unit (15) that this unit is controlled.
3. refrigerant system according to claim 2 comprises speed variable compressor (11), the first magnetic valve (12), four-way change-over valve (13), hot water heat exchanger (14), the second magnetic valve (16), the second electric expansion valve (17), the 3rd magnetic valve (18), the first electric expansion valve (19), condenser, gas divides and corresponding pipeline; It is characterized in that: the first magnetic valve (12) is installed between the exhaust connector of compressor (11) exhaust and four-way change-over valve (13), and the second magnetic valve (16) is installed between compressor (11) exhaust and hot water heat exchanger (14) gas phase mouth; The 3rd magnetic valve (18) is installed between hot water heat exchanger (14) liquid phase mouth and low pressure port; The second electric expansion valve (17) is installed between hot water heat exchanger (14) liquid phase mouth and liquid pipeline; The first electric expansion valve (19) is installed between condenser liquid phase mouth and liquid pipeline.
4. cistern assembly according to claim 1 (3) comprises a press-bearing water tank (32), the first waterway electromagnetic valve (31), the second waterway electromagnetic valve (35), moisturizing check valve (34), water circulating pump (33) and relevant pipeline, it is characterized in that press-bearing water tank (32) has filling pipe end and the lower mouth of a river, filling pipe end the second waterway electromagnetic valve (35) of directly ining succession wherein, the second waterway electromagnetic valve (35), the first waterway electromagnetic valve (31) is connected the water route threeway and connects with the water delivery port, the lower mouth of a river of press-bearing water tank (32), the running water moisturizing is connected 33 with water pump) water inlet connects by the water route threeway.
5. a control program that is directed to claim 1 described system, comprise a cover control system and corresponding control method.It is characterized in that, control system is by interior machine controller (24), indoor temperature transmitter (25), console controller (15), outdoor temperature sensor, hot water heat exchanger inflow temperature sensor, hot water heat exchanger leaving water temperature sensor, hot water temperature sensor, running water temperature sensor, water demand input; Console controller (15) is formulated the unit operational mode according to gathering temperature, room conditioning demand, the water demand input of coming, and controls each components and parts to realize corresponding function.
6. there are four kinds of operational modes in system according to claim 5, freezes, heats, refrigerating part recuperation of heat, the full recuperation of heat of freezing, heats and water heating simultaneously.
7. each controlled components and parts according to claim 5 comprise variable speed compressor (11), four-way change-over valve (13), the first magnetic valve (12), the second magnetic valve (16), the 3rd magnetic valve (18), the first electric expansion valve (19), the second electric expansion valve (17), indoor set electric expansion valve (23), indoor fan (21), the first waterway electromagnetic valve (31), the second waterway electromagnetic valve (35), water pump (33).
8. refrigeration mode according to claim 6, the refrigeration demand that depends on indoor set, it is characterized in that the first magnetic valve (12) be in open mode, the second magnetic valve (16) be in closed condition, four-way change-over valve (13) be in refrigerating state, the second expansion valve (17) be in closed condition, the 3rd magnetic valve (18) be in open mode, indoor set electric expansion valve (23) according to the degree of superheat and demand control, compressor rotary speed regulates according to demand.
9. heating mode according to claim 6, the demand that heats that depends on indoor set, it is characterized in that the first magnetic valve (12) be in open mode, the second magnetic valve (16) be in closed condition, four-way change-over valve (13) be in the state of heating, the second expansion valve (17) be in closed condition, the 3rd magnetic valve (18) be in open mode, indoor set electric expansion valve (23) according to the degree of superheat and demand control, the first electric expansion valve (19) according to the degree of superheat control, compressor rotary speed regulates according to demand.
10. water heating pattern according to claim 6, the hot water demand of depending on the water side, it is characterized in that the first magnetic valve (12) is in that closed condition, the second magnetic valve (16) are in that open mode, four-way change-over valve (13) are in that the state of heating, the second expansion valve (17) are in that semi-open state, the 3rd magnetic valve (18) are in that closed condition, indoor set electric expansion valve (23) are closed, the first electric expansion valve (19) according to the degree of superheat control, compressor rotary speed regulates according to demand.
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| CN2011103819266A CN103134231A (en) | 2011-11-24 | 2011-11-24 | Tree-joint-control system and control scheme thereof |
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| CN2011103819266A CN103134231A (en) | 2011-11-24 | 2011-11-24 | Tree-joint-control system and control scheme thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871492A (en) * | 2017-03-14 | 2017-06-20 | 挪信能源技术（上海）有限公司 | A kind of group control system of earth source heat pump |
| CN108495536A (en) * | 2018-05-29 | 2018-09-04 | 福建工程学院 | A kind of container-type data center computer-room air conditioning system and control method |
| CN112066497A (en) * | 2020-09-21 | 2020-12-11 | 珠海格力电器股份有限公司 | Integrated indoor unit heat pump air conditioning system and control method thereof |
| CN112432268A (en) * | 2020-11-18 | 2021-03-02 | 迪莫环境科技(武汉)有限公司 | Multifunctional water air conditioning system with multiple modes and control method thereof |
| CN112594821A (en) * | 2021-01-21 | 2021-04-02 | 广东积微科技有限公司 | Control method for simultaneously starting refrigeration and domestic hot water in multi-split air conditioner |
| CN112594822A (en) * | 2021-01-21 | 2021-04-02 | 广东积微科技有限公司 | Control method for simultaneously starting refrigeration and domestic hot water in multi-split air conditioner |
| CN114543161A (en) * | 2020-11-26 | 2022-05-27 | Lg电子株式会社 | Mixed multi-connected air conditioning system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106871492A (en) * | 2017-03-14 | 2017-06-20 | 挪信能源技术（上海）有限公司 | A kind of group control system of earth source heat pump |
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| CN108495536A (en) * | 2018-05-29 | 2018-09-04 | 福建工程学院 | A kind of container-type data center computer-room air conditioning system and control method |
| CN108495536B (en) * | 2018-05-29 | 2023-07-25 | 福建工程学院 | Air conditioning system of container type data center machine room and control method |
| CN112066497A (en) * | 2020-09-21 | 2020-12-11 | 珠海格力电器股份有限公司 | Integrated indoor unit heat pump air conditioning system and control method thereof |
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| CN114543161A (en) * | 2020-11-26 | 2022-05-27 | Lg电子株式会社 | Mixed multi-connected air conditioning system |
| CN114543161B (en) * | 2020-11-26 | 2023-08-11 | Lg电子株式会社 | Hybrid multi-connected air conditioning system |
| US11906208B2 (en) | 2020-11-26 | 2024-02-20 | Lg Electronics Inc. | Hybrid multi-air conditioning system |
| CN112594821A (en) * | 2021-01-21 | 2021-04-02 | 广东积微科技有限公司 | Control method for simultaneously starting refrigeration and domestic hot water in multi-split air conditioner |
| CN112594822A (en) * | 2021-01-21 | 2021-04-02 | 广东积微科技有限公司 | Control method for simultaneously starting refrigeration and domestic hot water in multi-split air conditioner |
| CN112594822B (en) * | 2021-01-21 | 2022-06-21 | 广东积微科技有限公司 | Control method for simultaneously starting refrigeration and domestic hot water in multi-split air conditioner |
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Application publication date: 20130605 |