CN212720240U

CN212720240U - Noise reduction device and water chilling unit

Info

Publication number: CN212720240U
Application number: CN202021685017.2U
Authority: CN
Inventors: 周堂; 周宇; 张治平; 钟瑞兴
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-03-16
Anticipated expiration: 2030-08-13

Abstract

The utility model discloses a device and cooling water set of making an uproar fall, including at least one noise receiver who sets up the surface received noise signal of the part of being surveyed of equipment, install the sound-proof housing that covers noise receiver at the part of being surveyed surface. The utility model discloses with the noise signal 180 degrees backs of noise receiver receipt, and frequency, amplitude keep unchangeable and send through the vocal ware that corresponds, because two kinds of audio frequency, amplitude are the same, opposite phase, therefore the amplitude is close to for zero after the stack, reach the mesh of making an uproar that falls voluntarily, simultaneously through adopting the sound-proof housing, can effectively cut off each frequency section noise transmission, avoid disturbing noise receiver noise signal, improve the effect of making an uproar that falls voluntarily.

Description

Noise reduction device and water chilling unit

Technical Field

The utility model relates to an air conditioner field especially relates to a device and cooling water set of making an uproar falls.

Background

The centrifugal water chilling unit is generally installed in an air-conditioning refrigeration machine room as a central air-conditioning main machine device, the running noise of the centrifugal water chilling unit is more and more concerned along with the improvement of the requirements of the surrounding environment and the machine room on the environmental noise, the noise value of the centrifugal water chilling unit becomes one of important evaluation indexes of the centrifugal water chilling unit, especially in some special engineering application scenes such as hotels, hospitals, CBD office buildings and the like, the noise value has more strict requirements, and the requirement of octave noise limit values is often provided.

At present the mainstream fall the measure of making an uproar have two kinds, one kind is that isolated noise falls to make an uproar, for example compressor casing thickening sound insulation design, compressor exhaust small-angle design, the unit sets up the soundproof cotton design, another kind is through noise detector received noise source signal and the opposite phase is sent, carries out the impact with the noise source and realizes falling the noise, and the in-process that adopts this kind of mode to receive the noise source is easily by other sound interference in the environment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the technical problem who how prevents that the noise source is disturbed among the above-mentioned prior art, provide a device and cooling water set of making an uproar falls.

The utility model adopts the technical proposal that:

the utility model provides a device of making an uproar falls, include: at least one noise receiver arranged on the surface of the tested component of the equipment for receiving noise signals, and a sound-proof cover arranged on the surface of the tested component for covering the noise receiver.

The utility model discloses still include: at least one sounder mounted adjacent to and aligned with the component to be tested, and a control panel connected to the noise receiver and the sounder, the control panel inverting the received noise signal and then emitting the inverted signal through the sounder.

Preferably, the noise receiver is a microphone and the sound generator is a speaker.

Furthermore, a wire passing locking joint is arranged on the sound-proof housing.

The utility model discloses still provide a cooling water set and include foretell device of making an uproar that falls.

The water chilling unit includes: the air conditioner comprises a control cabinet, a compressor, an exhaust pipe connected with the compressor, an oil pump arranged on the compressor, an evaporator positioned below the compressor and a condenser arranged side by side with the evaporator.

The tested components are: compressor, blast pipe, oil pump. Sounders corresponding to the compressor and the oil pump are installed on the evaporator, and sounders corresponding to the exhaust pipe are installed on the condenser.

Furthermore, the tested part also comprises a control cabinet.

Preferably, the chiller is a centrifugal chiller.

Compared with the prior art, the utility model discloses with the noise signal 180 degrees backs of noise receiver receipt, and frequency, amplitude keep unchangeable send through the vocal ware that corresponds, because two kinds of audio frequency, amplitude are the same, opposite phase, consequently the amplitude is close to for zero after the stack, reach the mesh of making an uproar that initiatively falls, simultaneously through adopting the sound-proof housing, can effectively cut off each frequency section noise transmission, avoid disturbing noise receiver noise signal, improve the effect of making an uproar that initiatively falls.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

FIG. 1 is a cross-sectional view of a noise receiver mounting location in an embodiment of the present invention;

fig. 2 is a front view of a water chiller according to an embodiment of the present invention;

fig. 3 is a top view of a water chiller according to an embodiment of the present invention;

fig. 4 is a side view of a water chiller according to an embodiment of the present invention.

Description of the symbols: a noise receiver 1; a sound-proof cover 2; a sound generator 3; an exhaust pipe 4; one side is provided with an air suction pipe 5; a control cabinet 6; a compressor 7; an evaporator 8; a condenser 9; a wire-passing locking joint 21; a bolt 22; an oil pump 71.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and examples.

As shown in fig. 1, the utility model provides a device of making an uproar falls, include: noise receiver 1, sounder 3, control panel and sound-proof housing 2, noise receiver 1 sets up on the part surface of being surveyed for the noise signal that the part sent is surveyed in the receipt, the part of being surveyed still is equipped with sound-proof housing 2 in the position that corresponds noise receiver. The sound-proof housing 2 is fixed on the surface of the tested component by a bolt 22, the sound-proof housing 2 is hemispherical to cover the noise receiver, the top of the sound-proof housing is provided with a wire-passing locking joint 21, the lead wire of the noise receiver 1 is led out by the wire-passing locking joint, the sounder 3 is installed close to the tested component, the sounding direction of the sounder is aligned to the tested component, the control panel is connected with the noise receiver 1 and the sounder 3, the control panel inverts the phase of the noise signal received by the noise receiver by 180 degrees, and the frequency and the amplitude are kept unchanged and are sent out by the corresponding sounder, because the two audio frequencies and the amplitudes are the same and have opposite phases, the amplitude after superposition is close to zero (because of the reasons of component errors, response speed, environmental influence and the like, the amplitude cannot be completely eliminated to zero), thereby the purpose of active noise reduction is achieved, to avoid interfering with the reception of the noise signal by the noise receiver. And the active noise reduction effect is improved.

In a specific embodiment, the noise receiver is a microphone and the sound generator is a speaker.

The main noise sources in the operation process of the water chilling unit are noise generated by mechanical operation and refrigerant compression in a compressor, airflow noise in an exhaust pipe, noise generated by operation of an oil pump and the like.

Therefore, the utility model also provides a cooling water set, fall the device of making an uproar including the aforesaid.

As shown in fig. 2 to 4, the water chiller specifically includes: a control cabinet 6, a compressor 7, an exhaust pipe 4, an oil pump 71, an evaporator 8 and a condenser 9. Evaporimeter 8 and condenser 9 set up side by side, and switch board 6 is installed at the top edge of evaporimeter 8, and compressor 7 installs at the top of evaporimeter 8, and one side of compressor 7 is equipped with breathing pipe 5 and connects evaporimeter 8, and blast pipe 4 sets up the opposite side at compressor 7 and connects condenser 9, and the opposite side of compressor 7 still is equipped with oil pump 71.

The measured component includes: the compressor 7, the exhaust pipe 4, the oil pump 71 and the control cabinet 6 are arranged on the tested parts, and a noise receiver and a sound-proof cover are arranged on the tested parts. The compressor 7, the exhaust pipe 4 and the oil pump 71 are respectively and correspondingly provided with a sounder 3 to respectively reduce noise, the sounders 3 corresponding to the compressor 7 and the oil pump 71 are arranged on the evaporator 8 and respectively face the compressor 7 and the oil pump 71, and the sounder 3 corresponding to the exhaust pipe 4 is arranged on the condenser 9 and faces the exhaust pipe 4.

The utility model discloses in each microphone, the speaker that is surveyed the part setting can set up in the position of difference, its quantity according to actual need and increase according to actual need, and same part of being surveyed can its all around respectively set up a set of or multiunit microphone and speaker from top to bottom to realize better noise reduction.

The control panel sets up in switch board 6, and the noise waveform that noise receiver 1 feedback that sets up on switch board 6 comes carries out frequency division processing, and the waveform after the frequency division overlaps with the waveform that comes to noise receiver on the compressor, noise receiver on the blast pipe, noise receiver on the oil pump and gather, then exports by the vocal ware that corresponds compressor, oil pump and blast pipe respectively after the antiphase is handled, further eliminates the noise that each part produced.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A noise reducing device, comprising: at least one noise receiver arranged on the surface of the tested component of the equipment for receiving noise signals, and a sound-proof cover arranged on the surface of the tested component for covering the noise receiver.

2. The noise reduction apparatus of claim 1, further comprising: at least one sounder mounted adjacent to and aligned with the component to be tested, and a control panel connected to the noise receiver and the sounder, the control panel inverting the received noise signal and then emitting the inverted signal through the sounder.

3. The noise reduction device of claim 2, wherein the noise receiver is a microphone and the sound generator is a speaker.

4. The noise reducer according to claim 1, wherein the acoustic enclosure is provided with a wire-through locking joint.

5. A water chilling unit comprising a noise reduction device according to any one of claims 1 to 4.

6. The chiller according to claim 5 wherein said chiller comprises: the air conditioner comprises a control cabinet, a compressor, an exhaust pipe connected with the compressor, an oil pump arranged on the compressor, an evaporator positioned below the compressor and a condenser arranged side by side with the evaporator.

7. The chiller according to claim 6 wherein said measured components comprise: compressor, blast pipe and oil pump.

8. The chiller according to claim 7 wherein the sound generators corresponding to said compressor and oil pump are mounted on the evaporator and the sound generator corresponding to said vent pipe is mounted on the condenser.

9. The chiller according to claim 7 wherein said measured components further comprise a control cabinet.

10. The chiller according to claim 5 wherein said chiller is a centrifugal chiller.