CN115950089A - A noise reduction device for an air-cooled heat pump unit - Google Patents

Abstract

The invention provides a noise reduction device of an air-cooled heat pump unit, and relates to the technical field of noise reduction of the air-cooled heat pump unit. The device comprises a device body, wherein the device body comprises an air-cooled heat pump unit exhaust box and two air inlet boxes; the air-cooled heat pump unit is internally divided into an air-cooled heat pump unit cavity and an air exhaust cavity by an airflow partition plate, and the air exhaust cavity is positioned above the air-cooled heat pump unit cavity; the top of the air inlet box is provided with an air inlet, and a plurality of air inlet noise reduction and elimination sheets are vertically or folded in the air inlet; an air outlet is arranged at the top of the air exhaust cavity, and a plurality of air exhaust noise reduction and silencing sheets are vertically or folded in the air outlet. Through creatively designing the heat dissipation airflow organization form and the noise reduction mode of the top surface noise reduction air inlet and the top surface noise reduction air exhaust of the air conditioner main unit, the diffusion of direct sound transmission can be avoided, a sound insulation and sound absorption enclosure noise attenuation function box body is formed, and the emission of noise can be reduced to the maximum extent.

Description

A noise reduction device for an air-cooled heat pump unit

technical field

The invention relates to the technical field of noise reduction for air-cooled heat pump units, in particular to a noise reduction device for air-cooled heat pump units.

Background technique

The air-cooled heat pump is a kind of air-conditioning unit that is different from the air-cooled chiller in the air-conditioning industry; in addition to the function of the air-cooled chiller to produce cold water, the air-cooled heat pump can also switch to the heating mode to produce hot water. The basic principle of the air-cooled heat pump is based on the compression refrigeration cycle, using the refrigerant as the carrier, and through the forced heat exchange of the fan, heat is absorbed or discharged from the atmosphere to meet the needs of cooling or heating.

The main noise of the existing air-cooled heat pump air conditioner unit comes from the airflow noise at the air intake and exhaust ducts, and the noise generated by the vibration of mechanical equipment (compressors, fans, etc.). When working, multiple pump units will continue to generate noise, resulting in excessive noise in the area, and the generation of noise not only affects people's lives, but also affects the normal work of the staff and the health of the staff.

The exhaust box of the traditional air-cooled heat pump unit adopts the mechanism of side air intake and top exhaust air for noise reduction. Although the side and top are respectively silenced, the heat dissipation airflow organization form of side muffler air intake and top muffler exhaust air, It will lead to the diffusion of direct sound transmission, so it is impossible to achieve all-round noise reduction with a reasonable structure. For example, the patent number is CN202121514815.3, which is a patent for the invention of a new type of low-noise frequency conversion air-cooled heat pump unit. The noise reduction treatment on the side cannot achieve ideal noise reduction; and the piping layout around the air-cooled heat pump unit is complicated, and the size of the traditional side air inlet noise reduction channel is affected by the pipelines and other facilities around the unit. Arranged in a cramped space.

In view of the deficiencies in the prior art, it is necessary to provide a noise reduction device for an air-cooled heat pump unit that can solve the problems raised in the background art above.

Contents of the invention

The purpose of the present invention is to provide a noise reduction device for an air-cooled heat pump unit, which can provide a solution to the deficiencies in the prior art, can avoid the diffusion of direct sound transmission, and form a sound-insulating and sound-absorbing enclosed noise attenuation functional box body, which can minimize noise emission, the top muffler air inlet channel is not affected by the complex pipeline layout around the equipment, and the design of the air inlet muffler channel has a wide range of sizes, which can meet the requirements of large equipment in a cramped and narrow space. The scheme selection design of Class or Class 0 noise standards.

An embodiment of the present invention provides a noise reduction device for an air-cooled heat pump unit, which includes a device body, and the device body includes an air-cooled heat pump unit exhaust box and two air inlet boxes, and the two air inlet boxes are arranged on the wind turbine. Both sides of the exhaust box of the cold and heat pump unit;

The exhaust box of the air-cooled heat pump unit is divided into an air-cooled heat pump unit chamber and an exhaust chamber by an airflow partition, the exhaust chamber is located above the air-cooled heat pump unit chamber, and the air-cooled heat pump unit chamber is Installed with air-cooled heat pump unit;

The top of the air inlet box is provided with an air inlet, and a number of air inlet noise reduction and muffling sheets are arranged vertically or folded in the air inlet, and the bottom of the air inlet noise reduction muffling sheet and the air inlet box Form an air inlet airflow space; the top of the exhaust chamber is provided with an air exhaust port, and a number of exhaust air noise reduction and muffling sheets are arranged vertically or folded in the air exhaust port, and the exhaust noise reduction muffling sheets An exhaust airflow space is formed between the bottom and the exhaust cavity.

In some embodiments of the present invention, the height of the exhaust box of the air-cooled heat pump unit is higher than the height of the air intake boxes on both sides.

In some embodiments of the present invention, the exhaust box of the air-cooled heat pump unit is separated from the air inlet boxes on both sides by a noise reduction and sound insulation wall and a supporting steel frame, and the supporting steel frame is correspondingly arranged on the The side wall of the air intake space; the outer wall of the air intake box is isolated from the outside by a noise reduction and sound insulation wall.

In some embodiments of the present invention, the supporting steel frame is made of anti-corrosion treated steel.

In some embodiments of the present invention, the bottom of the air exhaust noise reduction and muffler sheet is provided with a tapered air exhaust guide point.

In some embodiments of the present invention, the air inlet noise-reducing and muffling sheets and the exhaust-air noise-reducing and muffling sheets are respectively arranged in parallel in sequence along the airflow direction of the air-cooled heat pump unit.

In some embodiments of the present invention, the air inlet noise reduction and muffling sheets and the exhaust air noise reduction muffling sheets are made of sound-absorbing glass fiber cotton and galvanized/aluminum alloy perforated plate composite materials.

In some embodiments of the present invention, the exhaust box of the air-cooled heat pump unit is provided with an installation base platform, and the air-cooled heat pump unit is installed on the installation base platform.

In some embodiments of the present invention, a soundproof inspection door is provided on one side of the exhaust box of the air-cooled heat pump unit.

In some embodiments of the present invention, there is a certain distance between the bottom inner wall of the sound-absorbing sheet of the exhaust box of the air-cooled heat pump unit and the air-cooled heat pump unit to form an inspection space.

Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

The present invention includes a device body, which includes an air-cooled heat pump unit exhaust box and two air inlet boxes, and the two air inlet boxes are arranged on both sides of the air-cooled heat pump unit exhaust box; the air-cooled heat pump The exhaust box of the unit is divided into an air-cooled heat pump unit chamber and an exhaust chamber by an airflow partition, the exhaust chamber is located above the air-cooled heat pump unit chamber, and an air-cooled heat pump is installed in the air-cooled heat pump unit chamber Unit; the top of the air inlet box is provided with an air inlet, and a number of air inlet noise reduction and muffling sheets are arranged vertically or folded in the air inlet, and the bottom of the air inlet noise reduction and muffling sheet is connected to the air inlet box An air inlet airflow space is formed between them; the top of the exhaust chamber is provided with an exhaust outlet, and a number of exhaust noise reduction and muffling sheets are arranged vertically or folded in the exhaust outlet, and the exhaust noise reduction and noise reduction An exhaust air flow space is formed between the bottom of the sheet and the exhaust cavity. Through the groundbreaking design of the heat dissipation airflow organization form and noise reduction mode of the top muffler air inlet and the top muffler exhaust air of the air conditioner, it is different from the traditional heat dissipation airflow organization form of the side muffler air intake and the top muffler exhaust air, which can avoid direct airflow. The diffusion of sound transmission forms a sound-insulating and sound-absorbing enclosed noise attenuation function box, which can minimize noise emissions; and the noise-reducing air inlet channel formed by the top air inlet noise reduction and muffling sheet is not affected by the complex pipeline layout around the equipment. Influence, the size selection range of the air inlet and silencer channel is wide, which can meet the scheme selection design of large equipment in a cramped and narrow space that meets the standard of Class 1 or Class 0 noise standards, ensuring the normal ventilation and heat dissipation of the host; and the air intake and exhaust of the host The wind is completely separated and kept at a certain distance, which is more conducive to heat dissipation and energy saving.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a top view of the noise reduction device of the air-cooled heat pump unit in the embodiment of the present invention;

Fig. 2 is the sectional view of A-A section among Fig. 1 of the present invention;

Fig. 3 is the sectional view of B-B section among Fig. 1 of the present invention;

Fig. 4 is the sectional view of C-C section among Fig. 1 of the present invention;

Fig. 5 is a side view of the noise reduction device of the air-cooled heat pump unit in the embodiment of the present invention.

Reference signs: 100, air inlet box; 101, air inlet noise reduction and muffler sheet; 102, air inlet airflow space; 200, air-cooled heat pump unit chamber; 201, installation base platform; 300, air exhaust chamber; 301, air exhaust Noise-reducing and muffling sheet; 302. Exhaust air flow space; 303. Exhaust air diversion tip; 400. Air flow partition; 500. Air-cooled heat pump unit exhaust box; 600. Noise-reducing and sound-insulating wall; 700. Supporting steel frame ; 800, soundproof inspection door.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Example

Referring to Fig. 1-Fig. 5, it shows a schematic structural diagram of a noise reduction device of an air-cooled heat pump unit in an embodiment of the present invention;

A noise reduction device for an air-cooled heat pump unit, specifically comprising: a device body, the device body includes an air-cooled heat pump unit exhaust box 500 and two air inlet boxes 100, and the two air inlet boxes 100 are arranged on two sides of the air-cooled heat pump unit 500 boxes side;

The exhaust box 500 of the air-cooled heat pump unit is divided into an air-cooled heat pump unit chamber 200 and an exhaust chamber 300 by an airflow partition 400, the exhaust chamber 300 is located above the air-cooled heat pump unit chamber 200, and the air-cooled heat pump unit chamber 200 is installed There are 500 air-cooled heat pump units;

An air inlet is provided on the top of the air inlet box 100, and a number of air inlet noise reduction and muffling sheets 101 are arranged vertically or folded in the air inlet, and an air inlet airflow is formed between the bottom of the air inlet and noise reduction muffling sheets 101 and the air inlet box 100. Space 102; the top of the exhaust cavity 300 is provided with an exhaust outlet, and a number of exhaust noise reduction and muffling sheets 301 are arranged vertically or in a folded direction in the exhaust outlet. An exhaust air flow space 302 is formed therebetween.

Next, a noise reduction device for an air-cooled heat pump unit in this exemplary embodiment will be further described.

In an implementation manner in this embodiment, the above-mentioned device body includes an air-cooled heat pump unit exhaust box 500 and two air inlet boxes 100, and the two air inlet boxes 100 are arranged at the top of the air-cooled heat pump unit exhaust box 500. Both sides, and the height of the exhaust box 500 of the air-cooled heat pump unit is higher than the height of the air intake box 100 on both sides, which can isolate the airflow discharged by the air-cooled heat pump unit 500 from the intake air outside, and prevent the exhaust air from entering the intake box 100 Inside: the exhaust box 500 of the air-cooled heat pump unit is divided into an air-cooled heat pump unit chamber 200 and an exhaust chamber 300 by an airflow partition 400. The above-mentioned exhaust chamber 300 is located above the air-cooled heat pump unit chamber 200. The above-mentioned air-cooled heat pump unit An air-cooled heat pump unit 500 is installed in the unit cavity 200 , and the air-cooled heat pump unit discharges the air upward through the exhaust fan on the top, and then discharges it through the exhaust cavity 300 after noise reduction and silencer.

In an implementation manner in this embodiment, the top of the air inlet box 100 is provided with an air inlet, and a number of air inlet noise reduction and muffling sheets 101 are arranged vertically or folded inside the air inlet. The air intake airflow space 102 is formed between the bottom of the noise reduction and muffling sheet 101 and the air inlet box 100, and the top air intake passes through the air intake and noise reduction and muffling sheet 101 and then flows to the air-cooled heat pump machine through the air intake airflow space 102; The top of the air chamber 300 is provided with an air exhaust port, and a number of air exhaust noise reduction and muffling sheets 301 are arranged vertically or folded in the above air outlet, and the bottom of the above air exhaust noise reduction and muffling sheets 301 and the exhaust chamber 300 An exhaust air flow space 302 is formed, the exhaust air of the air-cooled heat pump machine flows upward into the exhaust air flow space 302, and after being diverted by the exhaust air flow space 302, it is discharged from the exhaust air channel formed by several exhaust air noise reduction and muffling sheets 301 after being silenced. Wherein, the above-mentioned air intake noise reduction and muffling sheets 101 and exhaust air noise reduction and muffling sheets 301 are respectively arranged in parallel in sequence along the airflow direction of the air-cooled heat pump unit 500 .

By setting both the air intake and exhaust air on the top of the device, the heat dissipation airflow organization and noise reduction mode of the top surface muffler air intake and top surface muffler exhaust air of the air conditioner main unit are pioneered, which is different from the traditional side muffler air intake The heat dissipation airflow organization form of the top surface muffler and exhaust air can avoid the spread of direct sound transmission, forming a sound insulation and sound absorption enclosure with noise attenuation function box, which can minimize the noise emission; Affected by the complex pipeline layout around the equipment, the size selection range of the designed air inlet and muffler channel is wide, which can meet the scheme selection design of large equipment in a cramped and narrow space that meets the standard of Class 1 or Class 0 noise standards.

It should be noted that in order to ensure the heat dissipation effect, the larger the effective area of the air intake and exhaust, the better, and the smaller the airflow resistance, but it is not good for reducing noise, and the cost of construction will also increase. In actual engineering, the pipelines around the equipment The intricate space is narrow and limited; in order to ensure the normal use of the equipment and meet the compliance noise emission standards, and at the same time take into account the economy of investment, it is usually necessary to calculate the minimum ventilation and heat dissipation area according to the functional requirements of the equipment (to prevent the equipment from being exhausted due to poor heat dissipation. high-voltage alarm), as a benchmark, according to the equipment noise emission and noise emission standards, design the noise reduction, control the wind speed and cost, and at the same time meet the normal use and maintenance of the equipment, noise emission standards and cost economy; Calculate the effective area of the air-inlet and exhaust silencing channels according to the air-conditioning host’s air intake, exhaust, heat dissipation, resistance, airflow velocity, and alarm value of the host’s critical pressure. The effective area ensures the normal ventilation and heat dissipation of the host. The air-cooled heat pump unit 500 noise reduction program model is designed according to the size, quantity, various operating parameters and placement of the specific host, and the model is reviewed to check the operation and maintenance of the host and the compliance of noise emissions; the above structure is also suitable for cooling tower equipment and Design of noise reduction scheme for fan equipment.

In an implementation manner in this embodiment, the air-cooled heat pump unit exhaust box 500 is separated from the air inlet boxes 100 on both sides by a noise reduction and sound insulation wall 600 and a supporting steel frame 700. The supporting steel The frame 700 is correspondingly arranged on the side wall of the air intake air space 102, so that the air intake flows from the air intake air space 102 on both sides to the air-cooled heat pump unit 500 in the middle; External isolation, by using the noise reduction and sound insulation wall 600 to isolate the air inlet box 100 and the exhaust chamber 300 from the outside, it can further reduce the noise generated by the internal air-cooled heat pump unit 500 to the outside, improve the noise reduction performance of the device body, and avoid It affects the work and health of personnel; and by completely separating the air intake and exhaust of the host and keeping a certain distance, it is more conducive to heat dissipation and energy saving.

As an example, the above-mentioned supporting steel frame 700 is made of anti-corrosion treated steel with a certain thickness and strength, so as to prevent the supporting steel frame from being eroded by the air flow for a long time to cause corrosion and breakage, and the anti-corrosion treatment can improve its service life.

In an implementation manner in this embodiment, the bottom of the above-mentioned exhaust noise reduction and muffling sheet 301 is provided with a conical exhaust guide tip 303, and the bottom of the exhaust noise reduction and muffling sheet 301 The cone-shaped diversion tip can reduce the air exhaust resistance, prevent the noise caused by the impact of the exhaust air, and further reduce noise and silence.

In an implementation manner in this embodiment, the above-mentioned intake air noise reduction sheet 101 and exhaust air noise reduction sheet 301 are made of sound-absorbing glass fiber cotton and galvanized/aluminum alloy perforated plate composite materials , with A-class fireproof, water-repellent and moisture-proof, good sound-absorbing performance and other characteristics.

In an implementation manner in this embodiment, the air-cooled heat pump unit exhaust box 500 is provided with an installation base 201, the air-cooled heat pump unit 500 is installed on the installation base 201, and the air-cooled heat pump unit is arranged One side of the bellows 500 is provided with a soundproof inspection door 800, and there is a certain distance between the inner wall of the air-cooled heat pump unit exhaust box 500 and the air-cooled heat pump unit 500 to form an inspection space; Leave a certain space and a soundproof inspection door 800 to facilitate inspection or maintenance operations when the main engine fails.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A noise reduction device for an air-cooled heat pump unit, characterized in that it includes a device body, and the device body includes an air-cooled heat pump unit exhaust box and two air inlet boxes, and the two air inlet boxes are arranged on the wind turbine. Both sides of the exhaust box of the cold and heat pump unit; The exhaust box of the air-cooled heat pump unit is divided into an air-cooled heat pump unit chamber and an exhaust chamber by an airflow partition, the exhaust chamber is located above the air-cooled heat pump unit chamber, and the air-cooled heat pump unit chamber is Installed with air-cooled heat pump unit; The top of the air inlet box is provided with an air inlet, and a number of air inlet noise reduction and muffling sheets are arranged vertically or folded in the air inlet, and the bottom of the air inlet noise reduction muffling sheet and the air inlet box Form an air inlet airflow space; the top of the exhaust chamber is provided with an air exhaust port, and a number of exhaust air noise reduction and muffling sheets are arranged vertically or folded in the air exhaust port, and the exhaust noise reduction muffling sheets An exhaust airflow space is formed between the bottom and the exhaust cavity. 2 . The noise reduction device for an air-cooled heat pump unit according to claim 1 , wherein the height of the exhaust box of the air-cooled heat pump unit is higher than the height of the air inlet boxes on both sides. 3 . 3. The noise reduction device of the air-cooled heat pump unit according to claim 1, characterized in that, the air-cooled heat pump unit exhaust box and the air inlet boxes on both sides are connected by noise-reducing sound insulation walls and supporting steel The support steel frame is arranged on the side wall of the air inlet airflow space; the outer wall of the air inlet box is isolated from the outside by a noise-reducing and sound-insulating wall. 4. The noise reduction device for an air-cooled heat pump unit according to claim 3, wherein the supporting steel frame is made of anti-corrosion treated steel. 5 . The noise reduction device for an air-cooled heat pump unit according to claim 1 , characterized in that, the bottom of the air exhaust noise reduction and muffler sheet is provided with a tapered air exhaust guide point. 6 . 6. The noise reduction device of the air-cooled heat pump unit according to claim 1, characterized in that, the air intake noise reduction and noise reduction sheet and the exhaust air noise reduction and noise reduction sheet are respectively along the sides of the air-cooled heat pump unit. Airflow directions are arranged in parallel in turn. 7. The noise reduction device for air-cooled heat pump unit according to claim 1, characterized in that, the air intake noise reduction sheet and the exhaust air noise reduction sheet are made of sound-absorbing glass fiber cotton and galvanized / Made of aluminum alloy perforated plate composite material. 8. The noise reduction device of the air-cooled heat pump unit according to claim 1, characterized in that, the exhaust box of the air-cooled heat pump unit is provided with an installation foundation platform, and the air-cooled heat pump unit is installed on the installation foundation on stage. 9 . The noise reduction device of the air-cooled heat pump unit according to claim 1 , wherein a soundproof inspection door is provided on one side of the exhaust box of the air-cooled heat pump unit. 10 . 10 . The noise reduction device of the air-cooled heat pump unit according to claim 1 , wherein there is a certain distance between the inner wall of the exhaust box of the air-cooled heat pump unit and the air-cooled heat pump unit to form an inspection space. 11 .

Images