CN106788093B

CN106788093B - The control method of compressor preheating noise reduction

Info

Publication number: CN106788093B
Application number: CN201611082685.4A
Authority: CN
Inventors: 璧甸福; 赵鸣
Original assignee: HANGZHOU XIANTU ELECTRONIC Co Ltd
Current assignee: HANGZHOU XIANTU ELECTRONIC Co Ltd
Priority date: 2016-11-30
Filing date: 2016-11-30
Publication date: 2019-02-22
Anticipated expiration: 2036-11-30
Also published as: CN106788093A

Abstract

The invention discloses a kind of control methods of compressor preheating noise reduction, comprising the following steps: microprocessor signals are powered on to compressor；In first carrier cycle T, U, V, W tri- of compressor is conducted n times, and turn-on time is respectively △ A1, △ A2, △ A3 ... △ AN；In the second carrier cycle T, U, V, W tri- of compressor is conducted 1 time, and turn-on time is △ A.The control method can be in the noise for guaranteeing that compressor is effectively reduced while preheating.

Description

The control method of compressor preheating noise reduction

Technical field

The present invention relates to the noise control technique fields of compressor, and in particular to one kind reduces compressor by preheating and makes an uproar The control method of sound.

Background technique

Theoretically, when the environment temperature in winter is lower, the lubricating oil viscosity in compressor increases, cooling and lubricating function It reduces, to will affect compressor operation performance, or even causes the irreversible damage of compressor.Therefore, before compressor operation Pre- heat function is introduced, stator coil, which remains powered on, rises compressor body temperature, to reduce the viscosity of its internal lubrication oil To improve compressor performance.

When preheating, the turn-on sequence of U, V, W are fixed in each carrier cycle, wherein the turn-on time of a phase is A, in addition two The turn-on time of phase is then A- △ A, and wherein A is determined by carrier cycle, and △ A depends on the size of compressor current.In △ A, Actual current by acquiring compressor is compared with target current adjusts △ A.

When preheating, U, V, W three-phase dc electric current can be connected once in a cycle.Primary conducting due to time of afterflow compared with It is long, therefore electric current can be gradually reduced, and when U, V, W three-phase dc electric current are connected one time again in new a cycle, electric current It can increased dramatically, so that direct current electro-mechanical wave can be caused excessively frequent.And slightly fluctuating for U, V, W three-phase dc electric current will generate Current sound, thus make human ear generate discomfort as the big ups and downs of this DC current flow often cause ear-piercing current sound Sense.

Summary of the invention

The technical problem to be solved by the present invention is to provide a kind of control method of compressor preheating noise reduction, the control method It can be in the noise for guaranteeing that compressor is effectively reduced while preheating.

The technical scheme is that providing a kind of control method of compressor preheating noise reduction, compressor U, V, W tri- is set The turn-on time of a wherein phase in phase is A, then the turn-on time of other two-phase is A- △ A, and A is determined that △ A takes by carrier cycle Certainly in the size of compressor current, △ A is that three-phase simultaneously turns on the time；Carrier cycle T, two adjacent carrier cycle T are set Respectively first carrier cycle T and the second carrier cycle T；It is △ Amin that a minimum turn-on time, which is arranged, so that △ A > △ Amin；It is N parts that △ A, which is arranged, and every part of time is respectively △ A1, △ A2, △ A3 ... △ AN；

The control method of the compressor preheating noise reduction the following steps are included:

(1), microprocessor signals are powered on to compressor；

(2), in first carrier cycle T, U, V, W tri- of compressor is conducted n times, and turn-on time is respectively △ A1, △ A2,△A3……△AN；

(3), in the second carrier cycle T, U, V, W tri- of compressor is conducted 1 time, and turn-on time is △ A.

△ A1=△ A2=△ the A3=...=△ AN.

Every M first carrier cycle T, a second carrier cycle T is executed.

The M=3.

After above method, compared with prior art, the present invention having the advantage that

The control method of compressor preheating noise reduction of the present invention is divided into 2 steps, i.e., is connected in current sample using single Mode can guarantee being normally carried out for current sample again in this way.Single conduction mode in a carrier cycle is changed to more Secondary conduction mode increases the frequency of conducting by repeatedly conducting in this way, so that compressor coil is powered, the time of power-off is short, To reduce time of afterflow, current fluctuation is thereby reduced, the noise of compressor is reduced.

Further, △ A1=△ A2=△ the A3=...=△ AN.Each turn-on time is consistent, so that Time of afterflow is completed unanimously, in turn ensure that the decibel of noise is more average while noise is effectively reduced.

Further, every M first carrier cycle T, a second carrier cycle T is executed.Every M first carrier week Movement in phase T executes the movement in a second carrier cycle T, is equivalent to noise and reduces M/mono-, thus effectively It further reduced noise.

Detailed description of the invention

Fig. 1 is the flow chart of the control method of compressor preheating noise reduction of the present invention.

Fig. 2 is the circuit diagram of Warming-up control circuit of the present invention.

Fig. 3 is that the conducting of the control method of compressor preheating noise reduction of the present invention disconnects schematic diagram.(primary conducting)

Fig. 4 is that the conducting of the control method of compressor preheating noise reduction of the present invention disconnects schematic diagram.(repeatedly conducting)

Specific embodiment

The present invention will be further explained below with reference to the attached drawings and specific examples.

Warming-up control circuit includes tri- microprocessor module, six control devices and U, V, W coils；The preheating Control circuit belongs to the prior art, therefore its specific connection relationship is as shown in Fig. 2, this will not be detailed here.Warming-up control circuit Working principle it is as follows, U, V, W tri- of compressor, which is conducted, to be realized by 6 on-off elements of SW1~SW6.SW1 and SW2 is the upper bridge arm and lower bridge arm of U phase respectively, and SW3 and SW4 are the upper bridge arm and lower bridge arm of V phase respectively, and SW5 and SW6 are respectively The upper bridge arm and lower bridge arm of W phase.The upper and lower bridge arm of same phase cannot simultaneously turn on；An ability must be connected in the upper and lower bridge arm of every phase Circuit loop can be formed with V1, V1 voltage is generally in 280V~380V.Such as SW1, SW4 and SW6 conducting, remaining disconnection are then electric Stream is flowed by SW1 from U phase by V1 anode, then flows back to V1 cathode respectively from V phase, SW4 and W phase, SW6.△ A indicate be exactly One subcarrier time inner looping turn-on time, remaining time are all to discharge to keep electric current by accumulation of energy.Accumulation of energy amount is by selected electricity Subcomponent determines, maintains the ability of electric current limited, thus can electric current be reduced.

As shown in figure 1, figure 3 and figure 4, compressor U, V, W is arranged in a kind of control method of compressor preheating noise reduction of the present invention The turn-on time of a wherein phase in three-phase is A, then the turn-on time of other two-phase is A- △ A, and A is determined by carrier cycle, △ A Depending on the size of compressor current, △ A is that three-phase simultaneously turns on the time；Carrier cycle T, two adjacent carrier cycles are set T is respectively first carrier cycle T and the second carrier cycle T, that is to say, that first carrier cycle T and the second interval carrier cycle T Setting；It is △ Amin that a minimum turn-on time, which is arranged, so that △ A > △ Amin；It is N parts that △ A, which is arranged, every part of time difference For △ A1, △ A2, △ A3 ... △ AN；For example, if △ A is 50 seconds, be divided into 5 parts, every part of time can for 2,8,10, 15,15.If mean allocation, every part of time is all 10 seconds.

(1), microprocessor signals are powered on to compressor；

△ A1=△ A2=△ the A3=...=△ AN.

Every M first carrier cycle T, a second carrier cycle T is executed.For example, if carried every 3 first Wave period T executes a second carrier cycle T；That is every movement for executing first carrier cycle T three times, executes execution The movement of second carrier cycle T.

The M=3.

Only highly preferred embodiment of the present invention is described above, but is not to be construed as limiting the scope of the invention.This Invention is not limited only to above embodiments, and specific structure is allowed to vary.In every case in the protection model of independent claims of the present invention Interior made various change is enclosed to be within the scope of the invention.

Claims

1. a kind of control method of compressor preheating noise reduction, it is characterised in that: the wherein phase in setting compressor U, V, W three-phase Turn-on time be A, then the turn-on time of other two-phase is A- △ A, and A determines by carrier cycle, and △ A depends on compressor current Size, △ A be three-phase simultaneously turn on the time；Carrier cycle T is set, and two adjacent carrier cycle T are respectively first carrier Cycle T and the second carrier cycle T；It is △ Amin that a minimum turn-on time, which is arranged, so that △ A > △ Amin；Setting △ A is N Part, every part of time is respectively △ A1, △ A2, △ A3 ... △ AN；

(1), microprocessor signals are powered on to compressor；

(2), in first carrier cycle T, U, V, W tri- of compressor is conducted n times, and turn-on time is respectively △ A1, △ A2, △ A3……△AN；

2. the control method of compressor preheating noise reduction according to claim 1, it is characterised in that: the △ A1=△ A2= △ A3=...=△ AN.

3. the control method of compressor preheating noise reduction according to claim 1, it is characterised in that: every M first carrier week Phase T executes a second carrier cycle T.

4. the control method of compressor preheating noise reduction according to claim 3, it is characterised in that: the M=3.