CN2482013Y

CN2482013Y - Domestic central air conditioner temp. controller

Info

Publication number: CN2482013Y
Application number: CN 01238066
Authority: CN
Inventors: 陈羽; 张静明
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-01
Filing date: 2001-06-01
Publication date: 2002-03-13
Anticipated expiration: 2011-06-01

Abstract

The utility model provides a household central air conditioning temperature controller, which is composed of a controlling circuit, a temperature detecting circuit, and an output circuit. The utility model is characterized in that the controlling circuit adopts a trigger, a trigging signal is provided for the CD end of the trigger in the close of a main machine non-source contact point, the trigging signal is provided for the CLK end of the trigger in a manual switch; the output circuit forms an output buffer through a coincidence gate, thereby realizing the machine halt function of an extension machine controlled by a main machine or the manual switch, and the output signal is fed back to the main machine. The utility model can realize the linkage of the main machine and the extension machine, in order that the operation is convenient, and the energy consumption is reduced.

Description

Family central air-conditioning temperature controller

The utility model relates to attemperating unit.More particularly, be a kind of family central air-conditioning temperature controller.

The family mainly comprises main frame, extension set and hot and cold water conveyance conduit with central air conditioner system.Main frame plays refrigeration, heats the homenergic transformation; Extension set is fan coil, is the wind circulating radiator, plays a part energy exchange; It is the transmission that media carries out energy that the hot and cold water conveyance conduit is used between main frame and extension set with water.In this system, the temperature controller that is installed on the extension set is to control indoor temperature by the air circulation of control fan unit fan.This control mode is in use being deposited following problem:

1, making the user is many rooms, multi-level villa or commercial building with air-conditioning mostly, and temperature controller of the prior art can only be controlled at extension set, between main frame and the extension set without any Coordinated Control Signal, Shutdown Hosts must (be supposed in the 3rd buildings) from the room to master switch (supposing at Stall), just can finish, say nothing of the remote control of realization information household appliances.

2, temperature controller of the prior art is only controlled the start and stop of blower fan.When the controlled shutdown of blower fan, main frame still in running, still carrying out by the conveying on the hot water pipe, and the energy resource consumption of conveying still exists.In fact, the energy consumption of main frame is about 60%, and the energy consumption on the pipeline is also very big, thereby causes great energy waste.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art, and provide a kind of and can between main frame and extension set, realize chain control, and then the convenient family central air-conditioning temperature controller that uses, reduces energy consumption.

The purpose of this utility model is achieved through the following technical solutions:

The utility model is made of control circuit, temperature sensing circuit and output circuit.

Design feature of the present utility model is:

A, described control circuit adopt d type flip flop (74LS74), hold (13 pin) that triggering signal be provided by triode T1 to d type flip flop CD with the closure of the passive contact of main frame, are that d type flip flop CLK end (11 pin) provides triggering signal with hand switch SW;

B, described temperature sensing circuit have by the refrigeration of state selecting switch SW2 selection output, heat and shut down three kinds of circuit states;

C, described output circuit be by constituting the output buffering with door, with the two-way coincidence AND signal input of door respectively from the Q output (8 pin) and the state selecting switch SW2 of d type flip flop; Carry out relay L1, L2 with door output by triode T2 control, the contact signal of relay L1, L2 inserts the blower fan and the magnetic valve of main frame and extension set respectively through interface I/O.

Compared with the prior art, the utlity model has following advantage:

1, the utility model is by being provided with chain signal between extension set and main frame, and when can be implemented in whole extension sets and shutting down, main frame cuts out automatically.

2, the extension set in the utility model can be opened automatically by main frame, also can realize preferential control by switch on the controller panel.

3, the utility model also can provide the solenoid control signal by controller by magnetic valve is set on hot water pipe, and it is not only to close blower fan that extension set is shut down, and also closes the circulation waterway of corresponding extension set simultaneously.

In sum, the utility model is easy to use, energy-saving effect is remarkable, and provides guarantee for whole system realizes remote telephone or online remote control.

Accompanying drawing is the utility model circuit theory diagrams.

By the following examples, in conjunction with the accompanying drawings the utility model is further described.

Embodiment:

Referring to accompanying drawing, present embodiment is made of control circuit, temperature sensing circuit and output circuit.

Shown in the figure, control circuit adopts d type flip flop 74LS74, holds 13 pin that triggering signal be provided by triode T1 to d type flip flop CD with the closure of the passive contact of main frame; With hand switch SW is that d type flip flop CLK holds 11 pin that triggering signal is provided.Wherein, the passive contact signal of main frame is respectively its 3rd, the 4th pin from C, the D two ends of interface I/O.

Temperature sensing circuit has by the refrigeration of state selecting switch SW2 selection output, heats and shut down three kinds of circuit states.

Output circuit is by constituting output buffering with door, with the two-way coincidence AND signal input of door respectively from Q output 8 pin and the state selecting switch SW2 of d type flip flop; Carry out relay L1, L2 with door output by triode T2 control, the contact signal of relay L1, L2 inserts the blower fan and the magnetic valve of main frame and extension set respectively through interface I/O.

Shown in the figure, in the present embodiment, the relay L1 contact A, the B that insert main frame hold the 1st, 2 pin at interface I/O.Insert the relay L2 contact of extension set, one tunnel the 6th, 7,8 pin through air quantity selector switch SW1 access interface I/O, and to blower fan; Another road opens and closes the 5th pin of control signal access interface I/O as the hot water pipe magnetic valve.

Hand switch SW, SW1 and SW2 among the figure all are arranged on the controller panel.Wherein, hand switch SW is an extension set manual opening-closing switch, belongs to the work of table tennis formula, promptly presses once and starts working, and presses once to quit work again.Hand switch SW1 is the component selector switch of extension set.Hand switch SW2 is the mode selection switch of extension set.

Operation principle is as follows:

Control circuit receives the control signal that main frame is sent by resistance R 3 and capacitor C 3, cooperates resistance R 7, R8 to promote triode T1 and makes trigger U1:B enter duty; Hand switch SW constitutes the control that priority is higher than main frame on control circuit.Resistance R 6 and E3 make controller be in default off-mode when powering on.

Temperature sensing circuit adopts thermistor RT, and it detects output signal after the voltage follower buffering that amplifier U2:D constitutes, and gives hand switch SW2 with the voltage ratio of hysteresis contrast after in amplifier U2:C.

Output circuit constitutes the output buffer that has AND function by diode D1, D2, resistance R 19, R20, R21 and amplifier U2:A, can realize main frame or hand switch SW " shutdown " function control to extension set.

The course of work:

When switching on for the first time, R6 and E3 make controller output be in off-mode, i.e. U2:A output low level, and T2 ends, the equal dead electricity of relay L1, L2, its contact is in normally open.

After working on power, start working as main frame, then the C among the passive touch point interface I/O of main frame, D termination are led to, and controller is exported high level in response with the 8th pin of U1:B.SW2 as this moment does not select " shutdown " state, and then U2:A exports high level, the T2 conducting, and relay L1, L2 get electric, and the closure of the passive contact of L1 is sent the signal of " extension set work " to main frame.L2 is switched to SW1 with AC power, and connects corresponding blower fan circuit by the selection of SW1.L2 also sends the control signal of hot water pipe magnetic valve simultaneously.Be chosen as ground connection (being stopped status) as SW2, then L1, L2 must not be electric, and this is preferential for extension set control.

After working on power, as not work of main frame, can press SW, then extension set is devoted oneself to work, and the back action of closing of the passive contact by L1 sends the signal of " extension set work " to main frame, and then main frame is started working, and realizes interlock.Another effect of SW is when main frame and extension set are all worked, and directly presses SW extension set is quit work.

Claims

1, family central air-conditioning temperature controller is made of control circuit, temperature sensing circuit and output circuit, it is characterized in that:

2, family according to claim 1 central air-conditioning temperature controller is characterized in that, the contact signal of the relay L2 of described access extension set, the one tunnel through air quantity selector switch SW1 to blower fan, another road opens and closes control signal as the hot water pipe magnetic valve.