CN207635589U - A kind of central air conditioner system device based on PLC - Google Patents

Abstract

The utility model discloses a PLC-based central air-conditioning system device, which comprises an auxiliary machine, a main machine and a PLC system. The auxiliary machine and the main machine are connected through a pipeline, and a fan is arranged on the pipeline, and the pipeline runs through a positioning plate, and The lower end of the pipeline is connected with a cover, the side wall of the cover is connected to the side wall of the inner cavity of the casing, and the upper end surface of the casing is fixedly connected to the lower end surface of the positioning plate. This central air-conditioning system based on PLC has a simple structure. Too much dust in the auxiliary machine will accumulate on the filter net. As the dust continues to accumulate, the weight of the filter net will increase, and the filter net will drive the first copper contact gradually close to the second copper contact below. On the one hand, it drives the rotation of the motor, drives the turntable to rotate, and the turntable winds the wire rope, driving the brush and the shovel to move together to clean the sundries on the surface of the filter screen.

Description

A central air-conditioning system device based on PLC

technical field

The utility model relates to the related technical field of air-conditioning, in particular to a central air-conditioning system device based on PLC.

Background technique

The central air conditioning system consists of one or more cold and heat source systems and multiple air conditioning systems. The principle of liquid vaporization refrigeration is used to provide the required cooling capacity for the air conditioning system to offset the cooling load of the indoor environment; the heating system provides the required heat for the air conditioning system to offset the heat load of the indoor environment. The refrigeration system is a crucial part of the central air-conditioning system, and its type, operation mode, and structural form directly affect the economy, efficiency, and rationality of the central air-conditioning system in operation. The existing PLC intelligent central air conditioner, because of long-term use, leads to the accumulation of internal debris, which is blocked in the air outlet, affecting the performance of the air conditioner, and it is difficult to disassemble and clean, which brings troubles to life. Therefore, a PLC-based Central air-conditioning system installation.

Utility model content

The purpose of this utility model is to provide a central air-conditioning system device based on PLC, to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A central air-conditioning system device based on PLC, including an auxiliary machine, a main machine and a PLC system, the auxiliary machine and the main machine are connected through a pipe, the pipe is provided with a fan, the pipe runs through a positioning plate, and the lower end of the pipe is connected There is a cover, the side wall of the cover is connected to the side wall of the inner cavity of the casing, the upper end surface of the casing is fixedly connected to the lower end surface of the positioning plate, fixed pulleys are symmetrically connected to both sides of the lower end surface of the cover, and the two A wire rope is wound around a fixed pulley, one end of the wire rope is connected with a brush, the side wall of the brush is connected to the inner side wall of the casing through a rubber rope, and the other end of the wire rope moves through the casing and is wound on the turntable, so The turntable is fixedly connected to the output end of the motor, and the outer wall of the motor is welded to the outer wall of the housing;

A filter screen is arranged below the brush, and the lower end surface of the filter screen is connected to the upper end surface of the activated carbon mesh by a spring. Two copper contact pieces, the second copper contact piece is vertically corresponding to the first copper contact piece connected to the lower end surface of the filter screen, and a through hole is opened on the side wall of the shell between the filter screen and the activated carbon mesh, and the through hole is connected through the through hole There is a dust collection bin, the dust collection bin is fixedly connected to the outer wall of the housing, and the through hole is rotatably connected to the electromagnet bin door, and the electromagnet bin door is matched with the permanent magnet connected to the upper inner side wall of the dust collection bin to achieve the through hole The opening and closing of the electromagnet door, the first copper contact piece, the second copper contact piece, the motor and the household electrical box form a series loop through wires, and the fan and the household electrical box form another series loop through wires. Series loop.

Preferably, a shovel arranged obliquely is fixedly connected to the side wall of the brush.

Preferably, the steel wire rope is wound into two parallel layers up and down, and the brush handle of the brush is slidably sleeved on the steel wire rope of the upper layer.

Preferably, there are four springs, and the springs are distributed in a matrix.

Preferably, the positioning plate is connected to the wall through expansion screws.

Compared with the prior art, the beneficial effect of the utility model is: the PLC-based central air-conditioning system device has a simple structure, when the dust in the auxiliary machine accumulates too much, it will accumulate on the filter net, and as the dust continues to accumulate, As a result, the weight of the filter screen will increase, and the filter screen will drive the first copper contact piece to gradually approach the second copper contact piece below, thus connecting the first circuit. On the one hand, it will drive the rotation of the motor and the turntable. The turntable winds the steel wire rope, drives the brush and the shovel to move together to clean the sundries on the surface of the filter screen, on the other hand, the electromagnet door is connected, which causes the electromagnet door and the permanent magnet to attract, and the electromagnet door opens. The brush and the shovel will push the sundries into the dust collection chamber, which will reduce the weight of the filter screen, and the first copper contact piece and the second copper contact piece will be separated, disconnecting this circuit, and under the action of the rubber rope, the hair The brush and shovel return to the original position together, and the electromagnet door is not powered, so it rotates under the action of gravity to block the through hole. The entire design transformation makes the air conditioner performance can always be automatically cleaned, prolonging the life of the air conditioner.

Description of drawings

Fig. 1 is a kind of central air-conditioning system device structural representation based on PLC that the utility model proposes;

Fig. 2 is an internal partial sectional view of the auxiliary machine in Fig. 1;

Fig. 3 is a schematic diagram of circuit connection in the PLC system involved in the internal structure of the utility model.

Among the figure: auxiliary machine 1, pipeline 101, fan 102, positioning plate 103, shell 104, cover 105, steel wire rope 106, turntable 107, hairbrush 108, fixed pulley 109, shovel 110, rubber rope 111, filter screen 112, spring 113, the first copper contact piece 114, the second copper contact piece 115, the electromagnet door 116, the permanent magnet 117, the dust collection bin 118, the activated carbon mesh sheet 119, and the host 2.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1-3, the utility model provides a technical solution:

A central air-conditioning system device based on PLC, including auxiliary machine 1, main machine 2 and PLC system, the single-chip microcomputer inside the PLC system controls the operation of the entire main machine 2 through the set program, and the connection between the auxiliary machine 1 and the main machine 2 The pipe 101 is connected through the pipe 101, the fan 102 is arranged on the pipe 101, the pipe 101 passes through the positioning plate 103, and the lower end of the pipe 101 is connected with the cover 105, and the side wall of the cover 105 is connected to the side wall of the inner cavity of the shell 104. , the upper end surface of the housing 104 is fixedly connected to the lower end surface of the positioning plate 103, fixed pulleys 109 are symmetrically connected to both sides of the lower end surface of the cover 105, and a steel wire rope 106 is wound around the two fixed pulleys 109, and one end of the steel wire rope 106 is connected with A hair brush 108, the side wall of the hair brush 108 is connected on the inner side wall of the housing 104 by a rubber rope 111, the other end of the wire rope 106 moves through the housing 104 and is wound on the turntable 107, and the turntable 107 is fixedly connected to the output end of the motor, The outer wall of the motor is welded to the outer wall of the housing 104 .

The bottom of hairbrush 108 is provided with filter screen 112, and the lower end surface of filter screen 112 is connected to the upper end face of activated carbon mesh 119 by spring 113, and the two ends of activated carbon mesh 119 are fixedly connected on the inner side wall of shell 104, and activated carbon mesh 119 The upper end surface of the upper end face is connected with the second copper contact piece 115, and the first copper contact piece 114 that the second copper contact piece 115 is connected with the filter screen 112 lower end face is arranged vertically, is positioned at the shell 104 between the filter screen 112 and the activated carbon mesh sheet 119 The side wall is provided with a through hole, and the through hole is connected with a dust collection bin 118, the dust collection bin 118 is fixedly connected on the outer side wall of the housing 104, and the through hole is connected with an electromagnet door 116 for rotation, and an electromagnet door 116 The permanent magnet 117 connected to the inner side wall of the upper end of the dust collection bin 118 is matched with the corresponding rotation setting to realize the opening and closing of the through hole, the electromagnet bin door 116, the first copper contact piece 114, the second copper contact piece 115, the motor and the household electrical box A series circuit is formed by wires between them, and another series circuit is formed by wires between the fan 102 and the household electric box.

The side wall of the hairbrush 108 is fixedly connected with a shovel 110 arranged obliquely. Objects that are difficult to clean on the surface of the filter screen 112 are shoveled away by the shovel 110, followed by the brush 108, which further improves the Efficiency in cleaning debris. The steel wire rope 106 is wound into two parallel layers up and down, and the brush handle of the brush 108 is slidably sleeved on the steel wire rope 106 on the upper layer. This threading method enables the brush 108 to move along the steel wire rope 106 more smoothly and brush away the filter screen 112 Dust accumulated on the surface. There are four springs 113, and the springs 113 are distributed in a matrix, so that it is more stable. The positioning plate 103 is connected to the body of wall by expansion screws, which is convenient for fixing.

Working principle: When the dust in the auxiliary machine 1 accumulates too much, it will accumulate on the filter screen 112. As the dust continues to accumulate, the weight of the filter screen 112 will increase, and the filter screen 112 will drive the first copper contact piece 114 Gradually close to the second copper contact piece 115 below, thereby connecting the first circuit, on the one hand, it drives the rotation of the motor, drives the turntable 107 to rotate, and the turntable 107 winds the wire rope 106, driving the brush 108 and the shovel 110 to move together The debris on the filter screen 112 surface is cleaned, on the other hand, the electromagnet door 116 is connected, thereby causing the electromagnet door 116 and the permanent magnet 117 to attract, the electromagnet door 116 is opened, and the hairbrush 108 and the shovel 110 The debris will be pushed into the dust collection bin 118, thereby reducing the weight of the filter screen 112, the first copper contact piece 114 and the second copper contact piece 115 are separated, and this circuit is disconnected. Under the action of the rubber cord 111, The hairbrush 108 and the shovel 110 get back to the original position together, and the electromagnet door 116 is not supplied with power, so the rotation under the action of gravity will block the through hole.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (5)

1. A central air-conditioning system device based on PLC, comprising an auxiliary machine (1), a main machine (2) and a PLC system, the auxiliary machine (1) and the main machine (2) are connected through a pipeline (101), and the pipeline (101 ) is provided with a fan (102), characterized in that: the pipeline (101) runs through the positioning plate (103), and the lower end of the pipeline (101) is connected with a cover (105), and the cover (105) The side wall of the housing (104) is connected to the side wall of the inner cavity of the housing (104), the upper end surface of the housing (104) is fixedly connected to the lower end surface of the positioning plate (103), and the lower end surface of the cover (105) is symmetrically connected with fixed Pulley (109), and a steel wire rope (106) is wound around on two fixed pulleys (109), and one end of described steel wire rope (106) is connected with hairbrush (108), and the side wall of hairbrush (108) passes rubber rope ( 111) connected to the inner side wall of the housing (104), the other end of the wire rope (106) moves through the housing (104) and is wound on the turntable (107), the turntable (107) is fixedly connected to the output end of the motor, The outer wall of the motor is welded to the outer wall of the casing (104); Described hairbrush (108) below is provided with filter screen (112), and the lower end surface of filter screen (112) is connected to the upper end surface of activated carbon mesh (119) by spring (113), and the two ends of activated carbon mesh (119) Fixedly connected on the inner side wall of the shell (104), the upper end surface of the activated carbon mesh (119) is connected with the second copper contact piece (115), and the second copper contact piece (115) is connected with the filter screen (112) lower end surface The first copper contact pieces (114) are vertically correspondingly arranged, and a through hole is provided on the side wall of the shell (104) between the filter screen (112) and the active carbon mesh sheet (119), and the through hole is connected with a dust collection bin ( 118), the dust collection bin (118) is fixedly connected on the outer sidewall of the casing (104), and the through hole is connected with the electromagnet bin door (116) in rotation, and the electromagnet bin door (116) and the dust collection bin (118) upper end The permanent magnets (117) connected to the inner side wall are matched with corresponding rotation settings to realize the opening and closing of the through hole, the electromagnet door (116), the first copper contact piece (114), the second copper contact piece (115), the motor A series loop is formed by wires with the household electrical box, and another series loop is formed by wires between the blower fan (102) and the household electrical box. 2. A central air-conditioning system device based on PLC according to claim 1, characterized in that: a shovel (110) arranged obliquely is fixedly connected to the side wall of the brush (108). 3. A PLC-based central air-conditioning system device according to claim 2, characterized in that: the steel wire rope (106) is wound into two layers parallel up and down, and the brush handle of the hair brush (108) is slidably socketed On the steel wire rope (106) of upper strata. 4. A PLC-based central air-conditioning system device according to claim 1, characterized in that: the number of said springs (113) is four, and the springs (113) are arranged in a matrix. 5. A PLC-based central air-conditioning system device according to claim 1, characterized in that: the positioning plate (103) is connected to the wall by expansion screws.