CN2293018Y

CN2293018Y - Temp. display controller for central air conditioning system

Info

Publication number: CN2293018Y
Application number: CN 97232897
Authority: CN
Inventors: 张春华; 张端桥
Original assignee: Tianyu Technology Development Co Of Shandong Polytechnical Univ Jinan Develop
Current assignee: Tianyu Technology Development Co Of Shandong Polytechnical Univ Jinan Develop
Priority date: 1997-05-05
Filing date: 1997-05-05
Publication date: 1998-09-30
Anticipated expiration: 2007-05-05

Abstract

The utility model relates to an indoor temperature controller for a central air conditioner with temperature digital display, which can be used for temperature monitoring occasions of a central air conditioner or other refrigerating and heating equipment. The temperature controller is characterized in that temperature digital display is adopted, a winter and summer transfer switch is designed with an electronic simulation switch, so that the winter and the summer operating states can be automatically recognized. When the entire device is power on, the temperature adjustment logical state of the season is entered, the indoor temperature is displayed, the temperature control range is more visual, and full automatic control is realized. Because the utility model adopts a novel and unique design, the bad phenomenon that other strong electricity control equipment has instant two-phase conduction now and then is totally avoided. Consequently, under any circumstances, the temperature controller can drive only one path, resulting in switching on or closing down, the rotation speed of a fan is controlled, and the purpose of constant temperature is achieved.

Description

Central air-conditioning temperature display controller

The utility model relates to a kind of central air-conditioning temperature controller that temperature digital shows that has.

The central air-conditioning temperature controller major part that China uses has at present adopted the TS-1 type room thermostat of U.S. Jiang Sen company, also has minority to use the temperature controller of Honeywell.It can be according to detected room temperature, and the action of control motor-driven valve is played the effect of regulating temperature, and can only be switched by the moving switch of armrest for the rotating speed control of blower fan, with the purpose that reaches further adjusting temperature and change wind.Regulate because motor-driven valve is a ratio, and open frequently, be subjected to the restriction of mechanical life, so very fragile.

To be that design is a kind of be used for summer refrigeration and winter heating all can be to the temperature required central air-conditioning temperature display controller of regulating to the purpose of this utility model.

But the purpose of this utility model is achieved in that the front of the channel selecting analog switch in including the central air-conditioning temperature display controller that fast comparator of fast comparator of reference voltage device, temperature signal amplifier, summers three, winters three, channel selecting analog switch constituted and installs state recognition in summer in the winter gating switch of an automatic transfer switch additional that this gating switch utilizes the CD4053 integrated circuit to be barricaded as.Simultaneously, install a temperature display driver additional in this controller, show Current Temperatures with digital form, this temperature display driver is to utilize an analog-digital converter ICL7107 and a copped wave inverting circuit to be barricaded as.So just constituted and a kind ofly be used for summer refrigeration and winter heating all can automatically adjust to temperature required, can carry out the central air-conditioning temperature display controller of digital demonstration simultaneously again temperature.

The utility model for summer in winter duty have and become manual switchover and be conversion automatically, the while can show the advantage of Current Temperatures again.

Below in conjunction with accompanying drawing the utility model further is illustrated.

Fig. 1 is a schematic diagram of the present utility model.

As seen from the figure, but the utility model is state recognition in summer in the winter gating switch 5 that the front of the channel selecting analog switch 6 in including the central air-conditioning temperature controller that fast comparator 4 of fast comparator 3 of reference voltage device 1, temperature signal amplifier 2, summers three, winters three, channel selecting analog switch 6 constituted installs an automatic transfer switch additional, installs a temperature display driver 7 simultaneously in this controller additional.State recognition in summer in winter gating switch utilizes the CD4053 integrated circuit to be barricaded as.12,2,5 ends of CD4053 respectively with summer three fast comparators 3 14,2,1 end be connected, and 3,1,13 ends respectively with winter three

fast comparators

48,1,7 ends be connected, 6,7, the 8 three ends ground end that is connected in parallel and meets power switch K, 9,10,11 3 ends are connected in parallel and are connected with the cutter of power switch K by a resistance R 2, another termination high level of K, 14,15,4 ends are connected with 11,10,9 ends of channel selecting analog switch 6 respectively.Temperature display driver 7 is to utilize an analog-digital converter ICL7107 and a copped wave inverting circuit to be barricaded as, the copped wave inverting circuit is by triode T, diode D1, D2 and Resistor-Capacitor Unit R1, C1, C2 is barricaded as, 26 ends of analog-digital converter ICL7107 are connected with the positive pole of the anode of diode D1 and electrochemical capacitor C2, the negative electrode of diode D1 is connected with the positive pole of electrochemical capacitor C1 and the anode of diode D2, the negative pole of the negative electrode of diode D2 and electrochemical capacitor C2 and an end of the resistance R 1 back ground connection that is connected, the other end of resistance R 1 is connected with the negative pole of electrochemical capacitor C1 and the emitter stage of triode T, the base stage of the 38 termination triode T of analog-digital converter ICL7107, the colelctor electrode of triode T connects power Vcc.

Operation principle of the present utility model and process are as follows:

State recognition in summer in winter gating switch 5 has 8 kinds of passage gating modes, this operation principle is to utilize the full conducting of CD4053 and the gating mode of full cut-off, when being gating control end (9,10,11 end) for low level, summer, the output state of three fast comparators 3 was delivered to 14,15,4 three outputs respectively by 12,2,5 ends of CD4053, and the gating control end is when being high level, winter, the output state of three fast comparators 4 was delivered to 14,15,4 three outputs respectively by 3,1,13 ends of CD4053, and summers three this moment, fast comparator 3 was output as cut-off state.This temperature controller is when connecting power supply, and K switch is closed simultaneously, and duty is also determined thereupon.

The copped wave inverting circuit that utilizes triode T, diode D1, D2 and Resistor-Capacitor Unit R1, C1, C2 to be barricaded as, its operation principle is to utilize the 38 end RC oscillating impulse cycles of ICL7107 to amplify the load resistance in R1 through T, because the unilateal conduction characteristic of diode, the C1 discharge loop is by R1, D2, the discharge loop of C2 is by D1, D2, and the discharge time constant in C2 loop is greater than C1 loop (τ=1/RC), therefore the anode at C2 has formed negative voltage, negative supply is provided for 26 ends of display driver 7 ICL7107, thereby makes the digital current temperature value that shows.

Central air-conditioning temperature display controller operation principle and process are that reference voltage device 1 provides high for summers three fast comparators 3; in; low three reference voltage values; compare with the output voltage of temperature signal amplifier 2; make the output of three fast comparators 3 in summer that four kinds of duties (000 be arranged; 100; 110; 111); this output state is connected to the input (12 of state recognition in summer in winter gating switch duty passage in 5 summer; 2; 5 ends); simultaneously again as the input signal of three fast comparators 4 in winter; winter, the output state of three fast comparators 4 was connected to the input (3 of state recognition in summer in winter gating switch duty passage in 5 winter; 1; 13 ends); be subjected to state recognition in summer in winter gating switch 5 channel selecting ends (9; 10; 11 ends) control; summer or winter unique a kind of duty and state recognition in summer in winter gating switch 5 14; 15; 4 three output conductings; promptly 11 of this duty and channel selecting analog switch 6; 10; 9 end conductings; thereby determine it is high speed (H); middling speed (M); low speed (L) or shutdown operation are to reach the purpose of constant temperature.

Claims

1. one kind includes reference voltage device (1), temperature signal amplifier (2), summers three fast comparator (3), winters three fast comparator (4), the central air-conditioning temperature display controller that channel selecting analog switch (6) is constituted, it is characterized in that in the said central air-conditioning temperature display controller channel selecting analog switch (6) but the front install state recognition in summer in the winter gating switch (5) of an automatic transfer switch additional, simultaneously, in this controller, install a temperature display driver (7) additional, state recognition in summer in winter gating switch (5) utilizes the CD4053 integrated circuit to be barricaded as, 12 of CD4053,2,5 ends respectively with summer three fast comparators (3) 14,2,1 end is connected, and 3,1,13 ends respectively with winter three fast comparators (4) 8,1,7 ends are connected, they are 6 years old, 7, the ground end that 8 three ends are connected in parallel and meet power switch K, they are 9 years old, 10,11 3 ends are connected in parallel and are connected with the cutter of power switch K by a resistance R 2, another termination high level of K, 14,15,4 ends respectively with 11 of channel selecting analog switch (6), 10,9 ends are connected, temperature display driver (7) is to utilize an analog-digital converter ICL7107 and a copped wave inverting circuit to be barricaded as, the copped wave inverting circuit is by triode T, diode D1, D2 and Resistor-Capacitor Unit R1, C1, C2 is barricaded as, 26 ends of analog-digital converter ICL7107 are connected with the positive pole of the anode of diode D1 and electrochemical capacitor C2, the negative electrode of diode D1 is connected with the positive pole of electrochemical capacitor C1 and the anode of diode D2, the negative pole of the negative electrode of diode D2 and electrochemical capacitor C2 and an end of the resistance R 1 back ground connection that is connected, the other end of resistance R 1 is connected with the negative pole of electrochemical capacitor C1 and the emitter stage of triode T, the base stage of the 38 termination triode T of analog-digital converter ICL7107, the colelctor electrode of triode T connects power Vcc.