CN202092283U

CN202092283U - Control circuit of electromagnetic clutch for automotive air conditioner

Info

Publication number: CN202092283U
Application number: CN201120189775XU
Authority: CN
Inventors: 龚文资
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-07
Filing date: 2011-06-07
Publication date: 2011-12-28
Anticipated expiration: 2021-06-07

Abstract

The utility model discloses a control circuit of an electromagnetic clutch for an automotive air conditioner, comprising a storage battery (1), an ignition switch (2), an air conditioner switch (3), a temperature control switch (4), a pressure switch (5), a compressor (6) with an electromagnetic clutch, an air conditioner normally opened relay (7) and an engine ECU (Electronically Controlled Unit), wherein the storage battery (1), the ignition switch (2), the air conditioner switch (3), the temperature control switch (4) and the pressure switch (5) are connected in sequence; one end of a coil terminal of the air conditioner normally opened relay (7) is connected with the pressure switch (5), and the other end of the coil terminal is grounded; one end of a switch terminal of the air conditioner normally opened relay (7) is connected with the storage battery (1) and the ignition switch (2), and the other end of the switch terminal is connected with the compressor (6) with the electromagnetic clutch. In the control circuit of the electromagnetic clutch for the automotive air conditioner in the utility model, the function of the circuit can be restored by only simply reforming the circuit, so that the cost is greatly reduced.

Description

A kind of automobile air conditioner electromagnetic clutch control circuit

Technical field

The utility model relates to the automobile air conditioning technology field, particularly a kind of automobile air conditioner electromagnetic clutch control circuit.

Background technology

At present, the operation of air conditioning for automobiles is mainly by engine electronic control unit (Electronic Control Unit, be called for short ECU) control, when ignition switch, air-conditioning switch closure, temperature detect switch (TDS), pressure switch are when satisfied temperature, pressure condition are also closed respectively, Engine ECU receives the air-conditioning start signal, then control the coil terminals bonding of air-conditioning normally opened relay, the switch contact adhesive of air-conditioning normally opened relay, connect the electromagnetic clutch power circuit of compressor, the electromagnetic clutch adhesive, compressor operating.Yet, if Engine ECU breaks down, can not control the electromagnetic clutch power circuit that the air-conditioning normally opened relay is connected compressor, uncontrollable compressor operating, need repairing or change Engine ECU this moment, and cost is very high.

The utility model content

The utility model provides a kind of automobile air conditioner electromagnetic clutch control circuit in order to solve the prior art defect of high cost, with implementation structure simple with the advantage that reduces maintenance cost.

In order to solve the problems of the technologies described above, the utility model provides following technical scheme:

A kind of automobile air conditioner electromagnetic clutch control circuit, the compressor 6, air-conditioning normally opened relay 7 and the Engine ECU that comprise battery 1, ignition switch 2, air-conditioning switch 3, temperature detect switch (TDS) 4, pressure switch 5, charged magnet clutch, wherein, battery 1, ignition switch 2, air-conditioning switch 3, temperature detect switch (TDS) 4 and pressure switch 5 link to each other successively, one end of the coil terminals of air-conditioning normally opened relay 7 is connected with pressure switch 5, the other end ground connection of coil terminals; One end of the switch terminal of air-conditioning normally opened relay 7 links to each other with ignition switch 2 with battery 1, and the other end of switch terminal is connected with the compressor of charged magnet clutch 6.

Automobile air conditioner electromagnetic clutch control circuit of the present utility model, when Engine ECU breaks down the work of uncontrollable compressor of air conditioner, only need circuit is simply reequiped, get final product the restoring circuit function, need not to change Engine ECU, also need not increase any element, greatly reduce maintenance cost.

Description of drawings

Fig. 1 is the operation principle schematic diagram of the automobile air conditioner electromagnetic clutch control circuit of prior art;

Fig. 2 is the operation principle schematic diagram of automobile air conditioner electromagnetic clutch control circuit of the present utility model.

[major part conventional letter]

The 1-battery; The 2-ignition switch; The 3-air-conditioning switch; The 4-temperature detect switch (TDS); The 5-pressure switch; The compressor of the charged magnet clutch of 6-; 7-air-conditioning normally opened relay.

The specific embodiment

For making the purpose of this utility model, technical scheme and advantage clearer, the utility model embodiment is described in further detail below in conjunction with accompanying drawing.

See also Fig. 1, Fig. 1 is the automobile air conditioner electromagnetic clutch control circuit schematic diagram of prior art.As shown in Figure 1, this automobile air conditioner electromagnetic clutch control circuit is made up of compressor 6, air-conditioning normally opened relay 7, the Engine ECU of battery 1, ignition switch 2, air-conditioning switch 3, temperature detect switch (TDS) 4, pressure switch 5, charged magnet clutch.When ignition switch 2, air-conditioning switch 3 closures, temperature detect switch (TDS) 4, pressure switch 5 is when satisfied temperatures, pressure condition are also closed respectively, Engine ECU receives the air-conditioning start signal, then control the coil terminals bonding of air-conditioning normally opened relay 7, the switch contact adhesive of air-conditioning normally opened relay 7, connect the electromagnetic clutch power circuit of compressor 6, electromagnetic clutch adhesive, compressor 6 work.If Engine ECU breaks down, can not control the electromagnetic clutch power circuit that air-conditioning normally opened relay 7 is connected compressor 6, then uncontrollable compressor operating, need repairing or change Engine ECU this moment, and cost is very high.

And automobile air conditioner electromagnetic clutch control circuit of the present utility model only need be reequiped foregoing circuit, sees also Fig. 2, and Fig. 2 is the structural representation of automobile air conditioner electromagnetic clutch control circuit of the present utility model.As shown in Figure 2, this automobile air conditioner electromagnetic clutch control circuit comprises compressor 6, air-conditioning normally opened relay 7 and the Engine ECU of battery 1, ignition switch 2, air-conditioning switch 3, temperature detect switch (TDS) 4, pressure switch 5, charged magnet clutch, wherein, battery 1, ignition switch 2, air-conditioning switch 3, temperature detect switch (TDS) 4 and pressure switch 5 link to each other successively, one end of the coil terminals of air-conditioning normally opened relay 7 is connected with pressure switch 5, the other end ground connection of coil terminals; One end of the switch terminal of air-conditioning normally opened relay 7 links to each other with ignition switch 2 with battery 1, and the other end of switch terminal is connected with the compressor of charged magnet clutch 6.Promptly no longer by Engine ECU control compressor operating, but when ignition switch 2, air-conditioning switch 3 closures, temperature detect switch (TDS) 4, pressure switch 5 is when satisfied temperatures, pressure condition are also closed respectively, directly connected the coil circuit of air-conditioning normally opened relay 7, the switch contact adhesive of air-conditioning normally opened relay 7, compressor 6 work.Get final product the restoring circuit function like this, need not to change Engine ECU, also need not increase any element, greatly reduce maintenance cost.

The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. automobile air conditioner electromagnetic clutch control circuit, the compressor (6), air-conditioning normally opened relay (7) and the Engine ECU that comprise battery (1), ignition switch (2), air-conditioning switch (3), temperature detect switch (TDS) (4), pressure switch (5), charged magnet clutch, it is characterized in that, described battery (1), ignition switch (2), air-conditioning switch (3), temperature detect switch (TDS) (4) and pressure switch (5) link to each other successively, one end of the coil terminals of air-conditioning normally opened relay (7) is connected with pressure switch (5), the other end ground connection of coil terminals; One end of the switch terminal of air-conditioning normally opened relay (7) links to each other with ignition switch (2) with battery (1), and the other end of switch terminal is connected with the compressor of charged magnet clutch (6).