CN101144476A - Overloading protecting device and method for air-conditioner compressor - Google Patents
Overloading protecting device and method for air-conditioner compressor Download PDFInfo
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- CN101144476A CN101144476A CNA2006100156871A CN200610015687A CN101144476A CN 101144476 A CN101144476 A CN 101144476A CN A2006100156871 A CNA2006100156871 A CN A2006100156871A CN 200610015687 A CN200610015687 A CN 200610015687A CN 101144476 A CN101144476 A CN 101144476A
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Abstract
The invention relates to a compressor, in particular to an overload protective device and a method of the air-conditioner compressor. The invention solves the problem that the air-conditioner compressor is over-heated because of overload of the air-conditioner compressor or even the motor of the compressor is burnt out, the technical proposal to be solved comprises: a machine box in which machine parts are arranged; a compressor which is arranged on the machine box chassis of an outdoor machine; a reversing valve arranged in the pipeline of a compressor refrigerant circulation pipeline; an outdoor heat exchanger and an outdoor fan; an electronic expansion valve; an indoor heat exchanger and an indoor fan arranged in the indoor machine box; an air conditioning controller and an overload protective device of the air-conditioner compressor, the invention is characterized in that the overload protective device comprises a temperature and pressure sensor arranged at the air exhaust opening of the air-conditioner compressor, which is connected to the central microprocessor, and connected with the electronic expansion valve of the air-conditioner controller. The invention is used for various air-conditioners and multi-room air-conditioners, which can be used to prevent the air-conditioner compressor to be burnt out because of overload.
Description
Technical field
The invention belongs to the Compressor Technology field, is a kind of overload protection device and method of cooler compressor specifically.
Background technique
As shown in Figure 1, general cooler compressor is to constitute the mechanism portion of motor and the compression mechanical part with bent axle 4, piston 6, cylinder 5 that mechanism portion drives constitutes by being provided with in the can 1 by stator 2, rotor 3.
After the mechanism portion by 9 pairs of cooler compressors of compressor wiring terminal powers up, bent axle 4, piston 6 compression refrigerant gas cylinder 5 in that its electric motor starting drives compression mechanical part make it be discharged by compressor top relief opening DP, get back to compressor again through entering compressor air suction mouth SP behind the condenser (heat release, heat), expansion valve, vaporizer (heat absorption, freeze) in coolant circulating system.
Heat load is excessive in the air conditioning chamber; ambient temperature is too high; outdoor condenser radiating effect is very poor; when card cylinder and motor windings short circuit take place in compression mechanical part; all can cause the cooler compressor excess load and generate heat even compressor electric motor is burnt; therefore in the cooler compressor overload protection device 7 is installed all; 8; the overload protection device of compressor is generally made by the inconsistent bimetallic strip of thermal distortion; as among Fig. 18 and shown in Figure 2; it is by housing 20; two lead-in wires 21; adjust screw 22; movable contact 23; bimetallic strip 24; stationary contact 25 constitutes; it is sealed in the compressor electric motor power circuit; when air conditioner generation excess load, produce super-high-current; this electric current will produce heat during by heater element (as compressor or motor windings), make the bimetal distortion inconsistent and deflection will be moved; stationary contact disconnects and cuts off the compressor electric motor power supply.
The overload protection device 8 of compressor and compressor wiring terminal 9 are installed in compressor case 1 top; tenminal block 9 links to each other external circuit in the compressor case and parts; for safety and protect it to avoid drenching with rain; Exposure to Sunlight and damaged in collision; be provided with above it end cap 10 is installed; the end cap mounting structure of the overload protection device of existing cooler compressor and tenminal block as shown in Figure 4; the fully closed compressor that some power are bigger; the flush type overload protection devices that adopt are imbedded in the winding of motor more; as among Fig. 17 and Fig. 3 as shown in; it is oversize and when winding temperature being raise exceed allowed band, protector will cut off compressor power and make the compressor electric motor stall to produce excess current or operating time at short circuit in winding.
As shown in Figure 5; the overload protection device of above-mentioned existing cooler compressor shuts down compressor because of its air outlet temperature of excess load just cuts off motor power when rising to 125 ℃ for 45 ℃ when compressor operation; but As time goes on; when machine temperature to be compressed drops to 95 ℃; compressor starts running again; be not excluded under the situation in excess load, overcurrent fault like this; compressor will constantly start, stop a reciprocation cycle by Fig. 5 curve, and if things go on like this compressor electric motor will be burnt out.
Summary of the invention
The present invention provides a kind of overload protection device and method of cooler compressor for the problem that solves above-mentioned prior art and exist, and the overload protection device of its compressor includes: the cabinet that forms installation part in the appearance; Be installed on the compressor on the outdoor cabinet chassis; Be installed on the selector valve in the compressor medium circulation pipeline; Outdoor heat converter and outdoor fan; Electric expansion valve; Be installed on indoor heat converter and indoor fan in the indoor cabinet; The overload protection device of air-conditioner controller and cooler compressor is characterized in that: above-mentioned overload protection device is connected to central microprocessor, is connected to air-conditioner controller control electric expansion valve again and constitutes by the output of the temperature that is installed on the cooler compressor relief opening and pressure transducer.
Said temperature and pressure transducer also can be arranged at vaporizer relief opening and compressor air suction mouth place.
The overload protection method of cooler compressor of the present invention includes: power up in cooler compressor, make air conditioner by the stage of setting mode operation; Compressor air-discharging, intakeport sensor are experienced exhaust, intakeport temperature, force value stage; Experience temperature, force value and setting rated temperature, force value comparison phase; Experience the judgement stage whether temperature, pressure surpass rated temperature, force value; Judged result is if controller sends the control impuls stage to electric expansion valve; Electronic expansion valve opening adds ambassador's compressor temperature, force value reduces the stage; Whether experience temperature, pressure above busy hour temperature, force value judgement stage; If then air conditioner shows air conditioner overload fault code CH33 and makes cooler compressor shut down the wait maintenance stage.
Advantage and good effect: 1. the present invention sends electrical signal with temperature, the pressure transducer that is arranged on compressor air-discharging, intakeport and sends into CPU, controller and setting value relatively, send stepper motor forward or reverse that control impuls makes electric expansion valve after relatively and control its aperture and surpass predetermined range to prevent compressor temperature, keep compressor continuously running do not burnt out.
2. the present invention utilizes the variation of electronic expansion valve opening to regulate the temperature of control compressor in the multi-compressor system, has prevented the high frequent shutdown, makes compressor damage.As through above-mentioned adjusting, compressor air-discharging, intakeport temperature are still very high then to make compressor shut down, and just can remain in operation after resetting showing on the remote controller that the prompting of CH33 code need manually be fixed a breakdown simultaneously.
Description of drawings
Fig. 1 is existing sealed rotary compressor and overload protection device installation sectional view;
Fig. 2 is a bimetal overload protection device positive view;
Fig. 3 is a flush type overload protection device positive view;
Fig. 4 is existing cooler compressor power supply terminal and overload protection device end cap sectional view;
Fig. 5 starts, stops cyclic curve figure for the excess load of existing cooler compressor;
Fig. 6 is the overload protection device block diagram of cooler compressor of the present invention, and Fig. 8 is that it is concrete
Implement illustration;
Fig. 7 is the another kind of overload protection device block diagram of the present invention, and Fig. 9 is specific embodiment figure;
Figure 10 is existing electric expansion valve positive view;
Figure 11 is the overload protection plotted curve of cooler compressor of the present invention;
Figure 12 is the overload protection method flow diagram of cooler compressor of the present invention.
Among each figure:
1-shell 2-stator
3-rotor 4-bent axle
5-cylinder 6-piston
7-flush type overload protection device 8-bimetal overload protection device
9-tenminal block 10-end cap
DP-exhaust SP-intakeport
20-housing 21-lead-in wire
22-adjusts screw 23-movable contact
24-bimetallic strip 25-stationary contact
C-sensor F-outdoor fan
F '-indoor fan G-pipeline
H-selector valve K-controller
N-indoor heat converter P-electric expansion valve, expansion valve
W-outdoor heat converter X-cabinet
Y-compressor CPU-central microprocessor
Embodiment
In order to further specify structure of the present invention, technical characteristics and effect lift following example again and accompanying drawings as follows: the structure of the overload protection device technological scheme of cooler compressor of the present invention includes shown in Fig. 6-12: the cabinet X that forms installation part in the appearance; Be installed on the compressor Y on the outdoor cabinet chassis; Be installed on the selector valve H among the compressor medium circulation pipeline G; Outdoor heat converter W and outdoor fan F; Electric expansion valve P; Be installed on indoor heat converter N and indoor fan F ' in the indoor cabinet; The overload protection device of air-conditioner controller K and cooler compressor is characterized in that: above-mentioned overload protection device is connected to central microprocessor CPU, is connected to air-conditioner controller K control electric expansion valve P again and constitutes by the temperature that is installed on the cooler compressor relief opening and pressure transducer C output.
Said temperature and pressure transducer C also can be arranged at vaporizer relief opening and compressor air suction mouth place (shown in Fig. 7,9).
The overload protection method of cooler compressor of the present invention includes: power up in cooler compressor, make air conditioner by setting mode operation stage S0; Compressor air-discharging, intakeport sensor are experienced exhaust, intakeport temperature, force value stage S1; Experience temperature, force value and setting rated temperature, force value comparison phase S2; Whether experience temperature, pressure above rated temperature, force value judgement stage S3; Judged result is if controller sends control impuls stage S4 to electric expansion valve; Electronic expansion valve opening adds ambassador's compressor temperature, force value reduces stage S5; Whether experience temperature, pressure above busy hour temperature, force value judgement stage S6; If then air conditioner shows air conditioner overload fault code CH33 and makes cooler compressor shut down wait maintenance stage S7.
Claims (3)
1. the overload protection device of a cooler compressor includes: the cabinet that forms installation part in the appearance; Be installed on the compressor on the outdoor cabinet chassis; Be installed on the selector valve in the compressor medium circulation pipeline; Outdoor heat converter and outdoor fan; Electric expansion valve; Be installed on indoor heat converter and indoor fan in the indoor cabinet; The overload protection device of air-conditioner controller and cooler compressor is characterized in that: above-mentioned overload protection device is connected to central microprocessor, is connected to air-conditioner controller control electric expansion valve again and constitutes by the output of the temperature that is installed on the cooler compressor relief opening and pressure transducer.
2. the overload protection device of cooler compressor according to claim 1, it is characterized in that: said temperature and pressure transducer also can be arranged at vaporizer relief opening and compressor air suction mouth place.
3. the overload protection method of a cooler compressor, it is characterized in that: it includes: power up in cooler compressor, make air conditioner by setting the mode operation stage; Compressor air-discharging, intakeport sensor are experienced exhaust, intakeport temperature, force value stage; Experience temperature, force value and setting rated temperature, force value comparison phase; Whether experience temperature, pressure above rated temperature, force value judgement stage; Judged result is if controller sends the control impuls stage to electric expansion valve; Electronic expansion valve opening adds ambassador's compressor temperature, force value reduces the stage; Whether experience temperature, pressure above busy hour temperature, force value judgement stage; Judged result is if then air conditioner shows air conditioner overload fault code CH33 and makes cooler compressor shut down the wait maintenance stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100156871A CN101144476A (en) | 2006-09-15 | 2006-09-15 | Overloading protecting device and method for air-conditioner compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100156871A CN101144476A (en) | 2006-09-15 | 2006-09-15 | Overloading protecting device and method for air-conditioner compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101144476A true CN101144476A (en) | 2008-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100156871A Pending CN101144476A (en) | 2006-09-15 | 2006-09-15 | Overloading protecting device and method for air-conditioner compressor |
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| CN (1) | CN101144476A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141999A (en) * | 2013-05-06 | 2014-11-12 | 重庆美的通用制冷设备有限公司 | Control device of electronic expansion valve for air conditioner |
| CN104566763A (en) * | 2013-10-12 | 2015-04-29 | 珠海格力电器股份有限公司 | Control method and control device of air conditioning system and air conditioning system |
| CN104883004A (en) * | 2015-06-11 | 2015-09-02 | 广东美的暖通设备有限公司 | Motor cooling structure, air conditioner, and motor cooling method |
| CN108758965A (en) * | 2018-06-19 | 2018-11-06 | 宁波奥克斯电气股份有限公司 | A kind of overload protection control method, device and air-conditioning |
| CN111795479A (en) * | 2020-07-09 | 2020-10-20 | 广东Tcl智能暖通设备有限公司 | Control method and device for air conditioner outdoor unit, air conditioner outdoor unit and storage medium |
| CN115751663A (en) * | 2022-11-28 | 2023-03-07 | 贵州电网有限责任公司 | Automatic regulating device and method for heat dissipation load of central air conditioner external unit |
-
2006
- 2006-09-15 CN CNA2006100156871A patent/CN101144476A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141999A (en) * | 2013-05-06 | 2014-11-12 | 重庆美的通用制冷设备有限公司 | Control device of electronic expansion valve for air conditioner |
| CN104566763A (en) * | 2013-10-12 | 2015-04-29 | 珠海格力电器股份有限公司 | Control method and control device of air conditioning system and air conditioning system |
| CN104566763B (en) * | 2013-10-12 | 2017-08-08 | 珠海格力电器股份有限公司 | Control method and control device of air conditioning system and air conditioning system |
| CN104883004A (en) * | 2015-06-11 | 2015-09-02 | 广东美的暖通设备有限公司 | Motor cooling structure, air conditioner, and motor cooling method |
| CN108758965A (en) * | 2018-06-19 | 2018-11-06 | 宁波奥克斯电气股份有限公司 | A kind of overload protection control method, device and air-conditioning |
| CN111795479A (en) * | 2020-07-09 | 2020-10-20 | 广东Tcl智能暖通设备有限公司 | Control method and device for air conditioner outdoor unit, air conditioner outdoor unit and storage medium |
| CN115751663A (en) * | 2022-11-28 | 2023-03-07 | 贵州电网有限责任公司 | Automatic regulating device and method for heat dissipation load of central air conditioner external unit |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20080319 |