CN201038954Y

CN201038954Y - Multi-speed compressor

Info

Publication number: CN201038954Y
Application number: CNU2007200480748U
Authority: CN
Inventors: 王彤; 王文斌; 刘怀灿
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Priority date: 2007-01-31
Filing date: 2007-01-31
Publication date: 2008-03-19
Anticipated expiration: 2017-01-31

Abstract

The utility model relates to a compressor, in particular to a multi-speed compressor. The multi-speed compressor which is provided by the utility model includes a motor to provide power, the motor is provided with a main coil and an auxiliary coil, the utility model is characterized in that: the motor can change a terminal block of the resistance of the main coil or can change the terminal blocks of the resistances of the main coil and the auxiliary coil simultaneously. The multi-speed compressor which is provided by the utility model can replace the original single-speed compressor, and can meet various practical needs of designers and users under the situation of less cost input. The utility model can also replace an inverter compressor, and can meet high capacity output under harsh environments and reduce the technical and cost inputs caused by using the inverter compressors.

Description

Many fast compressors

Technical field

The utility model relates to compressor, relates in particular to how fast compressor.

Background technology

Compressor is the device that the mechanical energy of motor is converted to fluid pressure energy, is the necessary device in refrigeration, the heating equipment.

Existing invariable frequency compressor has only one grade of rotating speed, and its Principle of Electric Engine figure as shown in Figure 1.Because of its binding post has only three, the resistance of main and auxiliary coil all is fixed value, thereby has caused rotating speed of motor to have no idea to change, and promptly the rotating speed of compressor has no idea to change.

In the practice process,, and make the use of constant speed compressor some shortcomings occur because of the rotating speed of compressor can not change:

When 1) the practical capacity demand reduced, constant speed compressor can not carry out capacity adjustment, can only satisfy actual needs by the startup-shutdown state of high energy consumption;

2) when actual demand is various states, constant speed compressor can't satisfy.

Existing frequency-changeable compressor can reach the ability step-less adjustment substantially, the basic various demands that can satisfy design and user, but under rugged environment, its ability can not reach output preferably, pass through variable frequency control module controls compressor electric motor rotating speed because of it simultaneously, its technology input and cost are all higher, and the cost initial cost of frequency-changeable compressor is more than 2 times of invariable frequency compressor substantially at present.So frequency-changeable compressor can not replace constant speed compressor fully.

The utility model content

The purpose of this utility model provides a kind of speed changing function that has, cheaply how fast compressor.

For achieving the above object, the how fast compressor that the utility model provides comprises the motor that power is provided, and motor has main coil and auxiliary winding, it is characterized in that: motor also has the binding post that can change main coil resistance.

For achieving the above object, the another kind of how fast compressor that the utility model provides comprises the motor that power is provided, and motor has main coil and auxiliary winding, it is characterized in that: motor also has the binding post that can change main coil and auxiliary winding resistance simultaneously.

The how fast compressor that the utility model provides can substitute former single speed compressor, under the cost situation that less input, can satisfy designer and user's various actual demands.The utility model can also substitute frequency-changeable compressor, can satisfy the high ability output under the adverse circumstances, can also reduce because of using the technology that frequency-changeable compressor brings and the input of cost.

Description of drawings

Fig. 1 is the schematic diagram of the motor of existing single speed compressor;

The schematic diagram of the motor of the how fast compressor that Fig. 2, Fig. 3 provide for the utility model embodiment one;

The schematic diagram of the motor of the how fast compressor that Fig. 4, Fig. 5 provide for the utility model embodiment two.

Embodiment

The utility model by adjusting the input circuit of existing compressor electric motor, makes it have multiple motor speed in conjunction with existing tap motor technology.

Embodiment one

As shown in Figure 2, S and R are respectively the auxiliary winding of compressor electric motor and original binding post of main coil, present embodiment is by setting up binding post R1, make the different effective resistance of the corresponding motor main coil of binding post R and R1, thereby by between binding post R and R1, switching, can change the effective resistance of main coil, make the compressor electric motor input power change, reach the purpose that changes compressor rotary speed.As shown in Figure 3, the binding post that is used for changing compressor electric motor main coil effective resistance can be a plurality of (as figure R1, R2), thereby realizes the switching between multiple speed.

Embodiment two

As shown in Figure 4, C is master, the total original binding post of spoke coil of compressor electric motor, present embodiment is by increasing binding post C1, make at C, when the C1 binding post switches, can change the resistance of main and auxiliary coil simultaneously, thereby change the compressor electric motor input power, reach the purpose that changes compressor rotary speed.As shown in Figure 5, a plurality of binding posts (as figure C1, C2) that are used for changing simultaneously main and auxiliary coil resistance can be set, thereby realize the switching between multiple speed.

In conjunction with existing tap motor technology,, on the basis of existing single speed compressor, can realize how fast compressor of the present utility model by increasing the mode of binding post.Less input for its technology and the cost of raw material, and can reach advantage such as energy-conservation preferably, comfortable to a certain extent.Than frequency-changeable compressor very big space is arranged more.

The utility model according to different actual demands, by the automatic control system of equipment, is selected to use proper compression machine rotating speed and is carried out ability output in use, uses to reach best ability, efficiency.

For example: design a kind of heat pump air conditioner of two kinds of compressor rotary speeds, its low relatively rotating speed design, coupling are specified refrigerating capacity, and high relatively rotating speed coupling is high temperature refrigerating capacity and specified heating capacity.Higher refrigeration efficiency ratio be can obtain like this, refrigerating capacity bigger under the high temperature and higher heating capacity also can be obtained.

Again for example: can design the heat pump air conditioner of a kind of multi-compressor rotating speed (is example with three kinds of speed), refrigeration, the heating capacity of air conditioner be divided different sections, concrete advantage such as following table:

Ambient temperature	Temperature range	The cooler compressor operational situation	Advantage
Ambient temperature	Temperature range	The cooler compressor operational situation	Advantage	High	>35℃	The maximum (top) speed operation	Satisfy the demand that bad working environments is used
In	33～35℃	1. intermediate speed operation 3. or high, medium and low rotating speed alternate run are changeed in intermediate speed operation 2. first maximum (top) speed operations continuously thereafter	1. satisfy fast-refrigerating, heat; 2. continuous service cuts down the consumption of energy; 3. avoid shutting down, the demand variations in temperature is little, comfortable row	High	>35℃	The maximum (top) speed operation	Satisfy the demand that bad working environments is used
In	33～35℃			Low	≤33	1. slow-speed of revolution operation 2. or high, medium and low rotating speed alternate run	1. satisfy fast-refrigerating, heat; 2. continuous service cuts down the consumption of energy; 4. avoid shutting down, the demand variations in temperature is little, comfortable row

Claims

1. fast compressor more than a kind comprises the motor that power is provided, and motor has main coil and auxiliary winding, it is characterized in that: motor also has the binding post that can change main coil resistance.

2. fast compressor more than a kind comprises the motor that power is provided, and motor has main coil and auxiliary winding, it is characterized in that: motor also has the binding post that can change main coil and auxiliary winding resistance simultaneously.