CN208952326U - A kind of water system air-conditioner pump energy saving control device - Google Patents

Abstract

The utility model discloses a kind of water system air-conditioner pump energy saving control devices, for including A.C. contactor KM1, second A.C. contactor KM2, BP controller and CL current transformer when adjustable speed water pump MP, for including air switch QF, frequency converter B P, return water T1 and water outlet T2 temperature sensor when variable frequency pump MB.The utility model freezes according to air-conditioner set or heating capacity size is by control circuit adjustment pump power and flow, to reach energy saving purpose.

Description

A kind of water system air-conditioner pump energy saving control device

Technical field

The utility model relates to air conditioning control device field, specifically a kind of water system air-conditioner pump energy saving control device.

Background technique

In water system air-conditioner engineering field, it is often necessary to use water as medium and heat exchanger carry out it is cold and hot exchange, heat exchanger Internal flow needs suitable flow to guarantee the exchange of heat.Source air-conditioner water equipment at work, when inlet/outlet temperature difference control When system is less than or equal to 5 DEG C, air-conditioning equipment heat exchanger can preferably carry out heat exchange by water flow, when refrigerating/heating becomes larger When need larger flow, water pump is increased using power；Smaller flow is only needed when refrigerating/heating becomes smaller, water pump is reduced using power； When water temperature reaches set temperature, host press is shut down, and water system need to only keep certain minimal circulation flow, and water pump is made to use function Rate reaches minimum.

In water system air-conditioner equipment running process, the flow of water, the size of water pump are according to unit maximum cooling/heating amount Come what is determined, when unit work, water pump is operated with firm power, and the most of the time is not operation when actual set works In maximum cooling/heating amount section, but keeping warm mode is even shut down in unsaturated section, and the long-term output-constant operation of water pump makes water pump Consume unnecessary electric energy, the electric energy of water pump consumption accounts for the 20% of unit power consumption according to statistics, for energy-saving consumption-reducing more, it is necessary to according to Host cooling/heating amount adjusts pump capacity and power, to reach energy-efficient purpose and can reduce the noise of water pump operation.

Utility model content the purpose of the utility model is to provide a kind of water system air-conditioner pump energy saving control device, with It solves the problems, such as of the existing technology, realizes according to the size of host cooling/heating amount, adjust pump capacity and power.

In order to achieve the above object, the technology employed by the present utility model is

A kind of water system air-conditioner pump energy saving control device is used for adjustable speed water pump MP, it is characterised in that: including the first exchange Contactor KM1, the second A.C. contactor KM2, controller, wherein the main contacts of the first A.C. contactor KM1 accesses firewire L, zero Line N, firewire L, zero curve N by the main contacts 2 of the first A.C. contactor KM1, main contacts 4 respectively in air-conditioning compressor MC, Fan MF electrical connection, while firewire L passes through the high quick access of the normally opened contact 6 and water pump MP in air-conditioning of the first A.C. contactor KM1 Line terminals H connection, firewire L also pass through the first A.C. contactor KM1 auxiliary normally-closed contact NC12 in air-conditioning water pump MP it is low The D connection of quick access line terminals, the main contacts of the second A.C. contactor KM2 access zero curve N, and zero curve N passes through the second A.C. contactor KM2 Main contacts 1, main contacts 2 connect with the zero curve connecting terminal N1 of water pump MP in air-conditioning, the signal output end of the controller point It is not connect with the control terminal of the first A.C. contactor KM1, the second A.C. contactor KM2.

A kind of water system air-conditioner pump energy saving control device, it is characterised in that: it further include current transformer CL, electricity Current transformer CL is set to the first A.C. contactor KM1 on the firewire of compressor MC connection, current transformer CL output end with The signal input part of controller connects.

A kind of water system air-conditioner pump energy saving control device, it is characterised in that: firewire L passes through the first ac contactor The main contacts 2 of device KM1 is connect with compressor MC, the fan MF connecting terminal R in air-conditioning, and zero curve N passes through the first A.C. contactor The main contacts 4 of KM1 is connect with the connecting terminal C of compressor MC, fan MF in air-conditioning.

A kind of water system air-conditioner pump energy saving accurate control device is used for variable frequency pump MB, it is characterised in that: including air Circuit breaker Q F, frequency converter B P, three-phase alternating-current supply are connect with the terminal 1 of air-break circuit-breaker QF, terminal 3,5 terminals, air break Terminal 2, terminal 4, the terminal 6 of device QF is connect with the input terminal R of frequency converter B P, terminal S and terminal T, the output of frequency converter B P Terminal U, terminal V, terminal W are connected with connecting terminal U1, V1, W1 of variable frequency pump respectively, further include return water temperature sensor, Leaving water temperature sensors, return water temperature sensor are set on air-conditioning water return pipeline, and leaving water temperature sensors are set to air-conditioning and go out In water lines, the output end of return water temperature sensor is connect with the terminal T1 of frequency converter B P, the output end of leaving water temperature sensors It is connect with the terminal T2 of frequency converter B P, 485 interfaces of terminal A, B of frequency converter B P are connect with manual operator or higher controller.

The utility model adjusts pump capacity and power by host cooling/heating amount, with reach energy-efficient purpose and The noise of water pump operation can be reduced and improve air-conditioner set Operating ettectiveness.

Detailed description of the invention

Fig. 1 is the circuit diagram that the utility model is used for adjustable speed water pump.

Fig. 2 is that the utility model uses frequency converter precise control circuit figure.

Specific embodiment

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in Figure 1, a kind of water system air-conditioner pump energy saving control device, is used for adjustable speed water pump MP, including the first exchange Contactor KM1(EX9CS 25113P220V), the second A.C. contactor KM2 (EX9CS 18113P220V), frequency-variable controller (GVF-P2-4T0037C), wherein the first A.C. contactor KM1(EX9CS 25113P220V) 1 main contacts 3 of main contacts difference Access firewire L, zero curve N, firewire L, zero curve N pass through the first A.C. contactor KM1(EX9CS 25113P220V) main contacts 2, Main contacts 4 is electrically connected with compressor MC (ZW30KS), the fan MF (YDK140-90-6) in air-conditioning respectively, while firewire L passes through First A.C. contactor KM1(EX9CS 25113P220V) normally opened contact 6 and air-conditioning in water pump MP (XPS32-12) high speed Connecting terminal H connection, firewire L also pass through water pump MP in the auxiliary normally-closed contact NC12 and air-conditioning of the first A.C. contactor KM1 (XPS32-12) low speed connecting terminal D connection, the main contacts 1 of the second A.C. contactor KM2 access zero curve N, and zero curve N passes through the The zero curve wiring of water pump MP (XPS32-12) in the main contacts 2 and air-conditioning of two A.C. contactor KM2 (EX9CS 18113P220V) Terminal N1 connection, the signal output end of the controller respectively with the first A.C. contactor KM1(EX9CS 25113P220V), The control terminal of two A.C. contactor KM2 (EX9CS 18113P220V) connects.

It further include current transformer CL (BH0.66 100/5), current transformer CL (BH0.66 100/5) is set to One A.C. contactor KM1 is on the firewire of compressor MC connection, current transformer CL (BH0.66 100/5) output end and control The signal input part of device connects.

Firewire L pass through the first A.C. contactor KM1(EX9CS 25113P220V) main contacts 2 respectively with the pressure in air-conditioning Contracting machine MC (ZW30KS), fan MF (YDK140-90-6) connecting terminal R connection, zero curve N pass through the first A.C. contactor KM1's Connecting terminal C of the main contacts KM1 (4) respectively with compressor MC (ZW30KS), fan MF (YDK140-90-6) in air-conditioning connects It connects.

Current transformer CL (BH0.66 100/5) connection controller is for detecting compressor MC (ZW30KS) electric current, and second A.C. contactor KM2 (EX9CS 18113P220V) controls water pump start and stop.

The utility model, using adjustable speed water pump, uses the first A.C. contactor KM1(EX9CS by simply controlling Auxiliary normally opened contact NO and the auxiliary contact normally-closed contact OFF 25113P220V) controls water pump MP, when compressor MC starting, First A.C. contactor KM1(EX9CS 25113P220V), the second A.C. contactor KM2 (EX9CS 18113P220V) be attracted, Water pump MP (XPS32-12P) high-speed cruising, when air-conditioning to set temperature, compressor MC (ZW30KS) is shut down, the first ac contactor Device KM1(EX9CS 25113P220V) auxiliary normally-closed contact OFF closure, water pump MP (XPS32-12) low speed operation, reduce Water pump operation power and noise, to reach energy saving purpose.

As shown in Fig. 2, a kind of water system air-conditioner pump energy saving accurate control device, is used for variable frequency pump MB (XPS32- 12P), including air-break circuit-breaker QF (EX9BMN 3P M32A), frequency converter B P (GVF-P2-4T0037C), three-phase alternating-current supply with Input terminal 1, the terminal 3, terminal 5 of air-break circuit-breaker QF (EX9BMN 3P M32A), air-break circuit-breaker QF (EX9BMN 3P M32A input terminal R, the end of output terminal 2, output terminal 4, output terminal 6 and frequency converter B P (GVF-P2-4T0037C)) Sub- S is connected with terminal T, the output terminal U of frequency converter B P (GVF-P2-4T0037C), terminal V, terminal W respectively with variable frequency pump Connecting terminal U1, V1, W1 of MB (XPS32-12P) is connected, and further includes return water temperature sensor, leaving water temperature sensors, returns Water temperature sensor is set on air-conditioning water return pipeline, and leaving water temperature sensors are set on air-conditioner water outlet pipeline, return water temperature The output end of sensor is connect with the terminal T1 of frequency converter B P (GVF-P2-4T0037C), the output end of leaving water temperature sensors with The terminal T2 connection of frequency converter B P (GVF-P2-4T0037C), the 485 of terminal A, B of frequency converter B P (GVF-P2-4T0037C) Interface is connect with manual operator or higher controller.

The utility model is passed to frequency converter B P, frequency converter B P by measurement water lines upper water-out temperature T2 and return water temperature T1 Output frequency is adjusted according to △ T={ T2-T1 } value, when T >=5 DEG C △, frequency becomes larger, and variable frequency pump MP1 flow and power increase Add, when T≤5 DEG C △, frequency becomes smaller, and variable frequency pump MP1 flow and power are reduced, and makes 5 DEG C of value of △ T={ T2-T1 }, sky It adjusts host to be changed according to environment temperature and cooling/heating amount, adjusts water flow and variable frequency pump MP1 changed power, to reach energy conservation Noise reduction purpose.

Claims (4)

1. a kind of water system air-conditioner pump energy saving control device is used for adjustable speed water pump MP, it is characterised in that: connect including the first exchange Tentaculum KM1, the second A.C. contactor KM2, controller, wherein the main contacts of the first A.C. contactor KM1 accesses firewire L, zero curve N, firewire L, zero curve N by the main contacts (2) of the first A.C. contactor KM1, main contacts (4) respectively with the compressor in air-conditioning MC, fan MF electrical connection, while firewire L passes through the height of the normally opened contact (6) and water pump MP in air-conditioning of the first A.C. contactor KM1 The H connection of quick access line terminals, firewire L also pass through water pump MP in the auxiliary normally-closed contact NC12 and air-conditioning of the first A.C. contactor KM1 The D connection of low speed connecting terminal, the main contacts of the second A.C. contactor KM2 accesses zero curve N, and zero curve N passes through the second ac contactor Main contacts (1), the main contacts (2) of device KM2 is connect with the zero curve connecting terminal N1 of water pump MP in air-conditioning, the signal of the controller Output end is connect with the control terminal of the first A.C. contactor KM1, the second A.C. contactor KM2 respectively.

2. a kind of water system air-conditioner pump energy saving control device according to claim 1, it is characterised in that: further include electric current Mutual inductor CL, current transformer CL are set to the first A.C. contactor KM1 on the firewire of compressor MC connection, current transformer The connection of the signal input part of CL output end and controller.

3. a kind of water system air-conditioner pump energy saving control device according to claim 1, it is characterised in that: firewire L passes through The main contacts (2) of first A.C. contactor KM1 is connect with compressor MC, the fan MF connecting terminal R in air-conditioning, and zero curve N passes through The main contacts (4) of first A.C. contactor KM1 is connect with the connecting terminal C of compressor MC, fan MF in air-conditioning.

4. a kind of water system air-conditioner pump energy saving accurate control device is used for variable frequency pump MB, it is characterised in that: disconnected including air Road device QF, frequency converter B P, three-phase alternating-current supply are connect with the terminal (1) of air-break circuit-breaker QF, terminal (3), terminal (5), air Terminal (2), terminal (4), the terminal (6) of circuit breaker Q F is connect with the input terminal R of frequency converter B P, terminal S and terminal T, frequency conversion Output terminal U, terminal V, the terminal W of device BP is connected with connecting terminal U1, V1, W1 of variable frequency pump respectively, further includes return water Temperature sensor, leaving water temperature sensors, return water temperature sensor are set on air-conditioning water return pipeline, and leaving water temperature sensors are set It is placed on air-conditioner water outlet pipeline, the output end of return water temperature sensor is connect with the terminal T1 of frequency converter B P, leaving water temperature sensing The output end of device is connect with the terminal T2 of frequency converter B P, 485 interfaces and manual operator of terminal A, B of frequency converter B P or higher level's control Device connection processed.