CN1243936C

CN1243936C - Variable capacity one-driving-many control technique

Info

Publication number: CN1243936C
Application number: CN 03150543
Authority: CN
Inventors: 王春刚; 符春花; 郑一琨
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-26
Filing date: 2003-08-26
Publication date: 2006-03-01
Anticipated expiration: 2023-08-26
Also published as: CN1515843A

Abstract

The present invention discloses a variable capacity one-driving-many control technique which comprises a variable capacity one-driving-many central air-conditioning system and a control part having the control logic of coolant controlling distribution and energy regulation, wherein the central air conditioning system comprises an outdoor machine, an indoor machine, an intermediate energy distributing box and an intermediate coolant pipe line; the control part comprises an outdoor machine controller, an indoor machine controller, an intermediate controller, an indoor controller and correspondingly connected control circuits. The outdoor machine comprises an at least one electronic expansion valve used for generating heat and at least one variable capacity compressor. The intermediate energy distribution box comprises at least two electronic expansion valves used for refrigeration, at least two electromagnetic valves used for generating heat and an intermediate controller. The control logic of the control part has energy management logic, overheat control logic and rapid cooling/heating control logic. The central air conditioning system can output proper refrigeration energy according to the energy requirement of the indoor machine and regulate the allocation of coolant and the control of overheat along with the changes of environments and various conditions.

Description

A kind of varying capacity one drags many control technologys

Technical field

The present invention relates to a kind of varying capacity one and drag many control technologys, more particularly, relate to the control technology that varying capacity off-premises station of a kind of usefulness connects many indoor sets.

Technical background

2002 years are in residential central air-market, the output of refrigerant type product is a little more than the wind pipe type product, the output of cold water formula product comes at last, but process along with the residential central air-development, the ratio of refrigerant multiple product will further improve, expectation will reach about 40% in the ratio of refrigerant multiple residential central air-on the system quantity, and wind pipe type and cold water formula will be respectively about 30%.

Refrigerant multiple residential central air-has following superior characteristics: the one, and energy-conservation, comfortable, running balance; The 2nd, but each room independent regulation can satisfy the not demand of the different air conditioner loads of chummery; The 3rd, space hold is less, and is less demanding to floor height; The 4th, very standard is installed, standardized pipe fitting is complete, and operating expenses is low.Refrigerant multiple residential central air-(is fluorine Lyons with cold-producing medium, as R22 etc.) be pumped (conveying) medium, more close with common domestic air conditioning, it is a kind of multi-user's expansion to the normal domestic use air-conditioning, that is: an off-premises station can be to several indoor set delivering liquid cold-producing mediums by pipeline, refrigerant flow by each heat exchanger in control circulating mass of refrigerant of compressor and the inlet chamber in time satisfies indoor hot and cold burden requirement.The technology of the type residential central air-comes from Japan, and therefore at present domestic main refrigerant body multiple residential central air-manufacturing enterprise all has certain relatedly with Japanese Air-conditioning Enterprise, and itself does not also have bigger technological break-through.

Relate to a kind of one among the China utility model patent ZL01258284.0 (Granted publication number be CN2521540Y) and drag many air-conditioner controllers, can control a plurality of unilateral system thermoelectrical magnetic valves, a plurality of cooling magnetic valve and unloading magnetic valve, solved one to a certain extent and dragged many refrigeration refrigerant assignment problem, but because magnetic valve does not have regulating action, the regulatory demand that obviously can not adapt to various operating modes, multi-form indoor set is so and can not play energy-conservation regulating action owing to can not form degree of superheat control.

Summary of the invention

Technical problem to be solved by this invention is the problem that exists at prior art, providing a kind of can be used for dragging the varying capacity one of many central air conditioner systems to drag many control technologys, it can export suitable cooling power according to institute's energy requirement self adaptation of indoor set, and changes distribution of adjusting refrigerant and degree of superheat control with environment and various condition.

The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of varying capacity one drags many control technologys, comprise and have the control assembly that varying capacity one drags many central air conditioner systems and has the control logic of distribution of control refrigerant and energy adjustment, described central air conditioner system comprises an off-premises station, at least two indoor sets, at least one intermediate energy distributor disk and refrigerant pipe therebetween, described control assembly comprises at least one outdoor controller, at least two indoor set controllers, at least one middle controller, at least two corresponding control circuits that connect of indoor set controller, the technical measures of taking comprise: the described off-premises station of a. has at least one and heats with electric expansion valve and at least one variable conpacitance compressor; B. described intermediate energy distributor disk includes at least two cooling electric expansion valves, at least two and heats with magnetic valve and a middle controller; C. the control logic of described control assembly has energy control logic and degree of superheat control logic, and also has cold soon/fast thermal control logic.

For optimizing technique scheme, the technical measures of being taked also comprise:

The output of the energy of above-mentioned variable conpacitance compressor is controlled by the parameter of the signal of corresponding indoor demand and environment, protection; The degree of superheat when electric expansion valve of described off-premises station can heat according to the temp probe adjusting of the import of off-premises station coil pipe, centre, outlet.

Above-mentioned intermediate energy distributor disk, in the middle of it controller can and outdoor controller and indoor set controller between communication mutually, its refrigerating/heating electric expansion valve and magnetic valve can control to adjust according to the temp probe of the import of indoor set coil pipe, centre, outlet and the signal of indoor demand.

Above-mentioned indoor set coil pipe is equipped with the temp probe and the indoor return air temperature probe of import, centre, outlet.

Above-mentioned indoor set controller can and middle controller and indoor controller between mutually communication.

That above-mentioned indoor set controller has is cold soon/fast hot merit energy.

Above-mentioned energy control logic can be determined the energy rank of indoor set according to the temperature difference of return air temperature and design temperature, determining required refrigeration work consumption, and can export according to energy-the compressor variable capacity relationship determines compressor output; Described degree of superheat control logic can be regulated electric expansion valve according to the temperature difference of evaporator outlet and import or medium temperature.

Compared with prior art, off-premises station of the present invention has at least one and heats with electric expansion valve and at least one variable conpacitance compressor; The intermediate energy distributor disk includes at least two cooling electric expansion valves, at least two and heats with magnetic valve and a middle controller; The control logic of control assembly has energy control logic and degree of superheat control logic, and also has cold soon/fast thermal control logic.It can export suitable cooling power by the control logic self adaptation of regulating air conditioning area according to institute's energy requirement of indoor set, and change by regulating refrigerant assignment logic and degree of superheat control logic with environment and various condition, realized connecting the control technology of many indoor sets with a varying capacity off-premises station.Formed a kind of varying capacity one and dragged many central air conditioner systems with energy distributor.Thereby reach freely control, energy-conservation, comfortable effect.

Description of drawings

Fig. 1 is a principle of the invention schematic block diagram;

Fig. 2 is the control logic block diagram of Fig. 1;

Fig. 3 is compressor frequency/monitoring/protection control logic block diagram of Fig. 1.

Specific embodiment

The present invention is further described below in conjunction with drawings and Examples.

As shown in Figure 1, a kind of varying capacity one drags many control technologys, comprise and have the control assembly that varying capacity one drags many central air conditioner systems and has the control logic of distribution of control refrigerant and energy adjustment, described central air conditioner system comprises an off-premises station 1, at least two indoor sets 2, at least one intermediate energy distributor disk 3 and refrigerant pipes therebetween, and described control assembly comprises at least one outdoor controller, at least two indoor set controllers, at least one middle controller, at least two indoor set controllers and the corresponding control circuits that connect thereof; The indoor set controller can and middle controller and indoor controller between mutually communication; And that the indoor set controller has is cold soon/fast hot merit energy;

Off-premises station 1 has at least one and heats with electric expansion valve and at least one variable conpacitance compressor; The output of the energy of variable conpacitance compressor is controlled by the parameter of the signal of corresponding indoor demand and environment, protection; The degree of superheat when electric expansion valve of off-premises station 1 can heat according to the temp probe adjusting of off-premises station 1 coil pipe import, centre, outlet;

Intermediate energy distributor disk 3 includes at least two cooling electric expansion valves, at least two and heats with magnetic valve and a middle controller; Intermediate energy distributor disk 3, in the middle of it controller can and outdoor controller and indoor set controller between communication mutually, its refrigerating/heating electric expansion valve and magnetic valve can control to adjust according to indoor set 2 coil pipe imports, centre, the temp probe of outlet and the signal of indoor demand; Indoor set 2 coil pipes are equipped with the temp probe and the indoor return air temperature probe of import, centre, outlet;

The control logic of control assembly has energy control logic and degree of superheat control logic, and also has cold soon/fast thermal control logic; The energy control logic can be determined the energy rank of indoor set 2 according to the temperature difference of return air temperature and design temperature, determining required refrigeration work consumption, and can export according to energy-the compressor variable capacity relationship determines compressor output; Degree of superheat control logic can be regulated electric expansion valve according to the temperature difference of evaporator outlet and import or medium temperature.

As shown in Figure 2, indoor control mechanism device is accepted user instruction (start/shutdown, refrigerating/heating/ventilation, design temperature, whether cold soon/fast heat), send to outdoor controller together with indoor set 2 temperature signals by middle controller, outdoor controller draws the compressor power output by compressor frequency/capacity module, as indoor set 2 required rates altogether is 6kw, and then given compressor frequency is 60HZ.And regulate the switch of electronic expansion valve opening and magnetic valve by off-premises station 1 and indoor set 2 coil temperatures, as the electric expansion valve of regulating No. two indoor set correspondences makes the difference of its coil pipe outlet temperature and inlet temperature less than twice greater than once.When many indoor sets were opened simultaneously, the electric expansion valve of different indoor set correspondences was regulated voluntarily automatically according to the instruction of off-premises station 1, thus the reasonable distribution of regulating refrigerant.Also monitoring and calculating energy demand are carried out energy adjustment to off-premises station 1 in real time.As the pairing indoor design temperature that reaches of machine in certain, then compressor frequency is corresponding reduces.

As shown in Figure 3, outdoor controller can be monitored various protections and fault in real time, carries out various processing; as system overload, then compressor is corresponding carries out frequency reducing even shuts down, and takes place if any fault; then send the corresponding failure code to the indoor set controller, carry out troubleshooting.

Though the present invention illustrates and describes by preferred embodiment,, those skilled in the art should understand, and in claim of the present invention institute restricted portion, can carry out various variations in form and details.

Claims

1, a kind of varying capacity one drags many control technologys, comprise and have the control assembly that varying capacity one drags many central air conditioner systems and has the control logic of distribution of control refrigerant and energy adjustment, described central air conditioner system comprises an off-premises station (1), at least two indoor sets (2), at least one intermediate energy distributor disk (3) and refrigerant pipe therebetween, described control assembly comprises at least one outdoor controller, at least two indoor set controllers, at least one middle controller, at least two corresponding control circuits that connect of indoor set controller is characterized in that: the described off-premises station of a. (1) has at least one and heats with electric expansion valve and at least one variable conpacitance compressor; B. described intermediate energy distributor disk (3) includes at least two cooling electric expansion valves, at least two and heats with magnetic valve and a described middle controller; C. the control logic of described control assembly has energy control logic and degree of superheat control logic, and also has cold soon/fast thermal control logic.

2, a kind of varying capacity one according to claim 1 drags many control technologys, it is characterized in that: the output of the energy of described variable conpacitance compressor is controlled by the parameter of the signal of corresponding indoor demand and environment, protection; The degree of superheat when electric expansion valve of described off-premises station can heat according to the temp probe adjusting of the import of off-premises station coil pipe, centre, outlet.

3, a kind of varying capacity one according to claim 1 drags many control technologys, it is characterized in that: described intermediate energy distributor disk (3), its described middle controller can and outdoor controller and indoor set controller between mutually communication, its refrigerating/heating electric expansion valve and magnetic valve can control to adjust according to the temp probe of the import of indoor set coil pipe, centre, outlet and the signal of indoor demand.

4, a kind of varying capacity one according to claim 2 drags many control technologys, it is characterized in that: described intermediate energy distributor disk (3), its described middle controller can and outdoor controller and indoor set controller between mutually communication, its refrigerating/heating electric expansion valve and magnetic valve can control to adjust according to the temp probe of the import of indoor set coil pipe, centre, outlet and the signal of indoor demand.

5, a kind of varying capacity one according to claim 2 drags many control technologys, it is characterized in that: described indoor set coil pipe is equipped with the temp probe and the indoor return air temperature probe of import, centre, outlet.

6, a kind of varying capacity one according to claim 1 drags many control technologys, it is characterized in that: described indoor set controller has cold soon/fast hot merit energy.

7, a kind of varying capacity one according to claim 6 drags many control technologys, it is characterized in that: described energy control logic can be determined the energy rank of indoor set according to the temperature difference of return air temperature and design temperature, determining required refrigeration work consumption, and can export according to energy-the compressor variable capacity relationship determines compressor output; Described degree of superheat control logic can be regulated electric expansion valve according to the temperature difference of evaporator outlet and import or medium temperature.