CN115950089A - Noise reduction device of air-cooled heat pump unit - Google Patents
Noise reduction device of air-cooled heat pump unit Download PDFInfo
- Publication number
- CN115950089A CN115950089A CN202310194051.1A CN202310194051A CN115950089A CN 115950089 A CN115950089 A CN 115950089A CN 202310194051 A CN202310194051 A CN 202310194051A CN 115950089 A CN115950089 A CN 115950089A
- Authority
- CN
- China
- Prior art keywords
- air
- heat pump
- pump unit
- cooled heat
- noise reduction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
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
Technical Field
The invention relates to the technical field of noise reduction of air-cooled heat pump machines, in particular to a noise reduction device of an air-cooled heat pump machine.
Background
The air-cooled heat pump is an air-conditioning unit which is different from an air-cooled water chilling unit in the air-conditioning industry; besides the function of preparing cold water by the air-cooled water chilling unit, the air-cooled heat pump can be switched to a heating working condition to prepare hot water. The basic principle of the air-cooled heat pump is based on a compression refrigeration cycle, a refrigerant is used as a carrier, and heat is absorbed or discharged from the atmosphere through forced heat exchange of a fan so as to meet the requirements of refrigeration or heating.
The main noise of current air-cooled heat pump air conditioning unit during operation derives from air current noise of air inlet and exhaust pipe department to and the noise that mechanical equipment (compressor and fan etc.) vibrations produced, when a plurality of pump assembly carried out the during operation in same region, a plurality of pump assembly can be continuous produces the noise, leads to regional noise to exceed standard, and the production of noise has not only brought the influence to people's life and also can influence staff's normal work and staff's healthy.
The exhaust box of the traditional air-cooled heat pump unit adopts a side air inlet and top air exhaust mechanism to reduce noise, and although the side surface and the top are respectively subjected to silencing treatment, the heat dissipation airflow organization forms of side silencing air inlet and top silencing air exhaust can cause the diffusion of direct sound transmission, so that the omnibearing silencing can not be realized by a reasonable structure, for example, the invention patent with the patent number of CN202121514815.3 and the name of a novel low-noise variable-frequency air-cooled heat pump unit is subjected to silencing treatment from the side surface of the unit, and completely ideal standard-reaching silencing can not be realized; and the pipeline arrangement around the air-cooled heat pump unit equipment is complicated, and the size of the traditional side air inlet silencing channel is influenced by facilities such as pipelines around the unit and has a narrow selection range, so that the requirement that large-scale equipment is arranged in a narrow space cannot be met.
In view of the deficiencies of the prior art, it is desirable to provide a noise reduction device for an air-cooled heat pump unit that solves the above-mentioned problems of the prior art.
Disclosure of Invention
The invention aims to provide a noise reduction device of an air-cooled heat pump unit, which can provide a solution for the defects in the prior art, can avoid the diffusion of direct sound, form a sound-proof sound-absorbing enclosure noise attenuation function box body, can reduce the emission of noise to the maximum extent, has a top surface silencing air inlet channel which is not influenced by the arrangement of complex pipelines around equipment, has a wide size selection range for designing the air inlet silencing channel, and can meet the scheme type selection design of the standard of the type 1 or type 0 noise of large-scale equipment in narrow and narrow space arrangement.
The embodiment of the invention provides a noise reduction device of an air-cooled heat pump unit, which comprises a device body, wherein the device body comprises an air-cooled heat pump unit air exhaust box and two air inlet boxes;
the air-cooled heat pump unit is characterized in that the inside of an exhaust box of the air-cooled heat pump unit is divided into an air-cooled heat pump unit cavity and an exhaust cavity by an airflow partition plate, the exhaust cavity is positioned above the air-cooled heat pump unit cavity, and an air-cooled heat pump unit is arranged in the air-cooled heat pump unit cavity;
the top of the air inlet box is provided with an air inlet, a plurality of air inlet noise reduction and elimination sheets are vertically or folded in the air inlet, and an air inlet airflow space is formed between the bottom of each air inlet noise reduction and elimination sheet and the air inlet box; an air outlet is formed in the top of the air exhaust cavity, a plurality of air exhaust noise reduction and elimination pieces are vertically or folded in the air outlet, and an air exhaust airflow space is formed between the bottoms of the air exhaust noise reduction and elimination pieces and the air exhaust cavity.
In some embodiments of the present invention, the height of the air discharge box of the air-cooled heat pump unit is higher than the height of the air inlet boxes on both sides.
In some embodiments of the present invention, the air-cooled heat pump unit exhaust box and the air inlet boxes on both sides are separated by a noise reduction and sound insulation wall and a support steel frame, and the support steel frame is correspondingly arranged on the side wall of the air inlet airflow space; the outer side wall of the air inlet 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 steel after being subjected to corrosion prevention treatment.
In some embodiments of the present invention, the bottom of the air exhaust noise reduction and silencing sheet is provided with a conical air exhaust flow guide tip.
In some embodiments of the present invention, the air inlet noise reduction and noise reduction sheet and the air exhaust noise reduction and noise reduction sheet are respectively arranged in parallel along the airflow direction of the air-cooled heat pump unit.
In some embodiments of the present invention, the air intake noise reduction and noise reduction sheet and the air exhaust noise reduction and noise reduction sheet are made of a composite material of sound absorption glass fiber cotton and a galvanized/aluminum alloy perforated plate.
In some embodiments of the present invention, a mounting base is disposed in the exhaust box of the air-cooled heat pump unit, and the air-cooled heat pump unit is mounted on the mounting base.
In some embodiments of the present invention, a sound insulation access door is provided at one side of the exhaust box of the air-cooled heat pump unit.
In some embodiments of the present invention, a distance is provided between the inner wall of the bottom of the sound-deadening sheet of the exhaust box of the air-cooled heat pump unit and the air-cooled heat pump unit to form an overhaul space.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:
the air-cooled heat pump unit air exhaust box comprises an air-cooled heat pump unit air exhaust box and two air inlet boxes, wherein the two air inlet boxes are arranged on two sides of the air-cooled heat pump unit air exhaust box; the air-cooled heat pump unit is characterized in that the interior of an exhaust box of the air-cooled heat pump unit is divided into an air-cooled heat pump unit cavity and an exhaust cavity by an airflow partition plate, the exhaust cavity is positioned above the air-cooled heat pump unit cavity, and the air-cooled heat pump unit is internally provided with an air-cooled heat pump unit; the top of the air inlet box is provided with an air inlet, a plurality of air inlet noise reduction and elimination sheets are vertically or folded in the air inlet, and an air inlet airflow space is formed between the bottom of each air inlet noise reduction and elimination sheet and the air inlet box; an air outlet is formed in the top of the air exhaust cavity, a plurality of air exhaust noise reduction and elimination pieces are vertically or folded in the air outlet, and an air exhaust airflow space is formed between the bottoms of the air exhaust noise reduction and elimination pieces and the air exhaust cavity. 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 are creatively designed, the heat dissipation airflow organization form is different from the heat dissipation airflow organization form of the traditional side surface noise reduction air inlet and top surface noise reduction air exhaust, the diffusion of direct sound can be avoided, a sound insulation and absorption enclosure noise attenuation function box body is formed, and the emission of noise can be reduced to the maximum extent; the noise reduction and noise reduction sheet on the top surface forms a noise reduction and air intake channel which is not influenced by the arrangement of complex pipelines around the equipment, the size selection range of the air intake and noise reduction channel is wide, the type selection design of a scheme that large-scale equipment is arranged in a narrow space to reach the standard of class 1 or class 0 noise can be met, and the normal ventilation and heat dissipation of a host machine are ensured; and the air intake and the air exhaust of the main machine are completely separated and keep a certain distance, which is more beneficial to heat dissipation and energy conservation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a top view of a noise reduction device of an air-cooled heat pump unit according to an embodiment of the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken along section A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view of section B-B of FIG. 1 in accordance with the present invention;
FIG. 4 is a cross-sectional view of section C-C of FIG. 1 in accordance with the present invention;
FIG. 5 is a side view of a noise reduction device of an air-cooled heat pump unit according to an embodiment of the present invention.
Reference numerals are as follows: 100. an air inlet box; 101. an air inlet noise reduction and silencing sheet; 102. an air intake flow space; 200. an air-cooled heat pump unit cavity; 201. installing a base platform; 300. an exhaust chamber; 301. an air exhaust noise reduction and silencing sheet; 302. an air exhaust space; 303. air exhaust diversion tip; 400. an airflow baffle; 500. an exhaust box of the air-cooled heat pump unit; 600. a noise reduction and sound insulation wall; 700. supporting the steel frame; 800. a sound insulation access door.
Detailed Description
In order to make the objects, 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 with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Examples
Referring to fig. 1-5, a schematic structural diagram of a noise reduction device of an air-cooled heat pump unit according to an embodiment of the present invention is shown;
the utility model provides a device of making an uproar falls in air cooled heat pump set specifically includes: the device body comprises an air-cooled heat pump unit exhaust box 500 and two air inlet boxes 100, wherein the two air inlet boxes 100 are arranged on two sides of the air-cooled heat pump unit 500;
the air-cooled heat pump unit exhaust box 500 is internally divided into an air-cooled heat pump unit cavity 200 and an exhaust cavity 300 by an airflow partition plate 400, the exhaust cavity 300 is positioned above the air-cooled heat pump unit cavity 200, and the air-cooled heat pump unit 500 is arranged in the air-cooled heat pump unit cavity 200;
an air inlet is formed in the top of the air inlet box 100, a plurality of air inlet noise reduction and elimination sheets 101 are vertically or folded in the air inlet, and an air inlet airflow space 102 is formed between the bottoms of the air inlet noise reduction and elimination sheets 101 and the air inlet box 100; an air outlet is formed in the top of the air exhaust cavity 300, a plurality of air exhaust noise reduction and elimination sheets 301 are vertically or reversely arranged in the air outlet, and an air exhaust airflow space 302 is formed between the bottoms of the air exhaust noise reduction and elimination sheets 301 and the air exhaust cavity 300.
Next, a noise reduction device of an air-cooled heat pump unit according to the present exemplary embodiment will be further described.
In one embodiment of this embodiment, the device body includes an air-cooled heat pump unit exhaust box 500 and two air inlet boxes 100, the two air inlet boxes 100 are disposed on two sides of the air-cooled heat pump unit exhaust box 500, and the height of the air-cooled heat pump unit exhaust box 500 is higher than the height of the air inlet boxes 100 on two sides, so that the air flow discharged from the air-cooled heat pump unit 500 can be isolated from the outside of the intake air, and the intake air is prevented from entering the inside of the air inlet boxes 100; the air-cooled heat pump unit is characterized in that an exhaust box 500 of the air-cooled heat pump unit is internally divided into an air-cooled heat pump unit cavity 200 and an exhaust cavity 300 by an airflow partition board 400, the exhaust cavity 300 is positioned above the air-cooled heat pump unit cavity 200, the air-cooled heat pump unit 500 is installed in the air-cooled heat pump unit cavity 200, and the air-cooled heat pump unit upwards exhausts airflow by an exhaust fan at the top of the air-cooled heat pump unit and exhausts the airflow after noise reduction and silencing of the exhaust cavity 300.
In an implementation manner of this embodiment, an air inlet is formed at the top of the air inlet box 100, a plurality of air inlet noise reduction and silencing pieces 101 are vertically or zigzag arranged in the air inlet, an air inlet airflow space 102 is formed between the bottoms of the air inlet noise reduction and silencing pieces 101 and the air inlet box 100, and top inlet air is silenced by the air inlet noise reduction and silencing pieces 101 and then flows to the air-cooled heat pump machine through the air inlet airflow space 102; an air outlet is arranged at the top of the air exhaust cavity 300, a plurality of air exhaust noise reduction and silencing pieces 301 are vertically or folded in the air outlet, an air exhaust air flow space 302 is formed between the bottom of each air exhaust noise reduction and silencing piece 301 and the air exhaust cavity 300, air exhausted by the air-cooled heat pump machine upwards flows into the air exhaust air flow space 302, is exhausted after being silenced through an air exhaust channel formed by the air exhaust noise reduction and silencing pieces 301 after being divided by the air exhaust air flow space 302, and the air inlet noise reduction and silencing pieces 101 and the air exhaust noise reduction and silencing pieces 301 are sequentially arranged in parallel along the air flow direction of the air-cooled heat pump machine 500 respectively.
The air inlet and the air exhaust are arranged at the top of the device, 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 are creatively designed, the heat dissipation airflow organization form is different from the traditional heat dissipation airflow organization form of the side surface noise reduction air inlet and the top surface noise reduction air exhaust, the diffusion of direct sound can be avoided, a sound insulation and absorption enclosure noise attenuation function box body is formed, and the noise emission can be furthest reduced; meanwhile, the air inlet channel is designed to be a top surface silencing air inlet channel, the influence of complex pipeline arrangement around the equipment is avoided, the size selection range of the designed air inlet silencing air inlet channel is wide, and the design of type selection of a scheme that large-scale equipment is arranged in a narrow space to reach the standard of type 1 or type 0 noise can be met.
It should be noted that, in order to ensure the heat dissipation effect, the larger the effective area of the air intake and exhaust is, the better it is, the smaller the air flow resistance is, but it is very unfavorable to reduce the noise, the cost will rise, and in the actual engineering, the complicated and complicated space of the pipeline around the equipment is limited; in order to ensure normal use of equipment and reach a compliant noise emission standard, and simultaneously consider the economy of investment, the minimum ventilation and heat dissipation area is usually calculated according to the functional requirements of the equipment (to prevent the equipment from high-pressure alarm caused by unsmooth heat dissipation and overhigh exhaust pressure), so that the noise elimination and reduction amount is designed according to the noise emission amount and the noise emission standard of the equipment by taking the minimum ventilation and heat dissipation area as a reference, the wind speed and the cost are controlled, and the normal use and the overhaul of the equipment, the standard noise emission and the cost economy are simultaneously met; the effective area of the air inlet and exhaust silencing channel can be calculated according to the requirements of air inlet, air exhaust, heat dissipation capacity, resistance, air flow speed and the critical pressure alarm value of the main unit of the air conditioner, and the normal ventilation and heat dissipation of the main unit can be ensured by changing the effective area of the silencing channel by changing the thickness or the length of the noise reduction silencing sheet and the like. The noise reduction scheme model of the air-cooled heat pump unit 500 is designed according to the size, the number, various operation parameter indexes and the placing position of a specific host, and the running maintenance condition and the noise emission standard reaching condition of the host are modeled and rechecked; the above structure is also suitable for the design of noise reduction schemes of cooling tower equipment and fan equipment.
In one embodiment of 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 support steel frame 700, and the support steel frame 700 is correspondingly disposed on the sidewall of the air inlet airflow space 102, so that the inlet air flows from the air inlet airflow spaces 102 on both sides to the air-cooled heat pump unit 500 in the middle; the outer side wall of the air inlet box 100 is isolated from the outside by the noise reduction and sound insulation wall 600, and the air inlet box 100 and the air exhaust cavity 300 are isolated from the outside by the noise reduction and sound insulation wall 600, so that the noise generated by the internal air-cooled heat pump unit 500 to the outside can be further reduced, the noise reduction performance of the device body is improved, and the influence on the work and the body health of personnel is avoided; and the air inlet and the air exhaust of the main machine are completely separated and kept at a certain distance, so that the heat dissipation and the energy conservation are facilitated.
As an example, the supporting steel frame 700 is made of steel with certain thickness and strength after being subjected to corrosion prevention treatment, so that the supporting steel frame is prevented from being broken due to corrosion caused by long-time air flow scouring, and the service life of the supporting steel frame can be prolonged through the corrosion prevention treatment.
In one embodiment of this embodiment, the bottom of the exhaust noise reduction and muffling sheet 301 is provided with a tapered exhaust air guiding tip 303, and the bottom of the exhaust noise reduction and muffling sheet 301 is provided with a tapered air guiding tip, so that exhaust air resistance can be reduced, noise caused by impact of exhaust air can be prevented, and noise can be further reduced and muffled.
In one embodiment of this embodiment, the air intake noise reduction and noise reduction sheet 101 and the air exhaust noise reduction and noise reduction sheet 301 are made of a composite material of sound-absorbing glass fiber cotton and a galvanized/aluminum alloy perforated plate, and have the characteristics of a-level fire resistance, a hydrophobic moisture resistance, good sound-absorbing performance, and the like.
In one embodiment of this embodiment, an installation base 201 is disposed in the air-cooled heat pump unit exhaust box 500, the air-cooled heat pump unit 500 is installed on the installation base 201, a sound insulation access door 800 is disposed on one side of the air-cooled heat pump unit exhaust box 500, and a certain distance is provided 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 access space; the air inlet silencing passage and the air exhaust silencing passage of the main machine reserve a certain space and a sound insulation access door 800, so that the main machine can be conveniently overhauled or maintained during the failure of the main machine.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The noise reduction device of the air-cooled heat pump unit is characterized by comprising a device body, wherein the device body comprises an air-cooled heat pump unit exhaust box and two air inlet boxes, and the two air inlet boxes are arranged on two sides of the air-cooled heat pump unit exhaust box;
the air-cooled heat pump unit is characterized in that the interior of an exhaust box of the air-cooled heat pump unit is divided into an air-cooled heat pump unit cavity and an exhaust cavity by an airflow partition plate, the exhaust cavity is positioned above the air-cooled heat pump unit cavity, and the air-cooled heat pump unit is internally provided with an air-cooled heat pump unit;
the top of the air inlet box is provided with an air inlet, a plurality of air inlet noise reduction and elimination sheets are vertically or folded in the air inlet, and an air inlet airflow space is formed between the bottom of each air inlet noise reduction and elimination sheet and the air inlet box; an air outlet is formed in the top of the air exhaust cavity, a plurality of air exhaust noise reduction and silencing pieces are vertically or folded in the air outlet, and an air exhaust airflow space is formed between the bottoms of the air exhaust noise reduction and silencing pieces and the air exhaust cavity.
2. The noise reducer of an air-cooled heat pump unit as set forth in claim 1, wherein the height of the exhaust box of the air-cooled heat pump unit is higher than the height of the intake boxes on both sides.
3. The noise reduction device of the air-cooled heat pump unit of claim 1, wherein the air-cooled heat pump unit exhaust box is separated from the air inlet boxes at two sides by a noise reduction and sound insulation wall and a support steel frame, and the support steel frame is correspondingly arranged on the side wall of the air inlet airflow space; the outer side wall of the air inlet box is isolated from the outside by a noise reduction and sound insulation wall.
4. The noise reduction device of the air-cooled heat pump unit according to claim 3, wherein the supporting steel frame is made of steel after being subjected to corrosion prevention treatment.
5. The noise reducer of the air-cooled heat pump unit of claim 1, wherein the bottom of the air-discharging noise-reducing and silencing sheet is provided with a conical air-discharging flow-guiding tip.
6. The noise reduction device of the air-cooled heat pump unit of claim 1, wherein the air intake noise reduction and silencing sheet and the air exhaust noise reduction and silencing sheet are respectively arranged in parallel along the airflow direction of the air-cooled heat pump unit.
7. The noise reduction device of an air-cooled heat pump unit according to claim 1, wherein the air intake noise reduction and noise reduction sheet and the air exhaust noise reduction and noise reduction sheet are made of sound-absorbing glass fiber cotton and a galvanized/aluminum alloy perforated plate composite material.
8. The noise reduction device of an air-cooled heat pump unit according to claim 1, wherein a mounting base table is provided in the exhaust box of the air-cooled heat pump unit, and the air-cooled heat pump unit is mounted on the mounting base table.
9. The noise reducer of an air-cooled heat pump unit of claim 1, wherein a sound insulation access door is provided at one side of the exhaust box of the air-cooled heat pump unit.
10. The noise reduction device of an air-cooled heat pump unit of claim 1, wherein a distance is provided 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 overhaul space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310194051.1A CN115950089A (en) | 2023-03-03 | 2023-03-03 | Noise reduction device of air-cooled heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310194051.1A CN115950089A (en) | 2023-03-03 | 2023-03-03 | Noise reduction device of air-cooled heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115950089A true CN115950089A (en) | 2023-04-11 |
Family
ID=87297719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310194051.1A Pending CN115950089A (en) | 2023-03-03 | 2023-03-03 | Noise reduction device of air-cooled heat pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115950089A (en) |
-
2023
- 2023-03-03 CN CN202310194051.1A patent/CN115950089A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102538083A (en) | Outdoor unit for air conditioner | |
| ITTO990028A1 (en) | FAN DUCT FOR AN AIR CONDITIONER MOUNTED ON A FRAME. | |
| CN201318290Y (en) | Noise reducing structure in oil-free screw rod compressor sound screening hood | |
| CN220397819U (en) | Noise reduction device of air-cooled heat pump unit | |
| CN115950089A (en) | Noise reduction device of air-cooled heat pump unit | |
| CN113027567B (en) | Silencer assembly of automobile exhaust system | |
| JP5521648B2 (en) | Blower with silencer box | |
| CN212583819U (en) | Ultra-silent low-noise generator set | |
| CN210637208U (en) | Steel-wood mixed inner box type heat dissipation structure of compressor silence box of oil-free air compressor | |
| CN209744688U (en) | High sound insulation volume sound insulation cover | |
| CN220118266U (en) | Air compressor machine installing cabinet | |
| CN218030350U (en) | Noise-reduction active refrigeration type generator set | |
| JPH0526422Y2 (en) | ||
| CN221728772U (en) | Refrigerating noise-reducing cabinet for hoisting air conditioner | |
| CN110469921A (en) | A kind of naval vessels integrated form air-conditioning station | |
| CN217584844U (en) | Noise-reduction heat exchange unit and air conditioner | |
| CN212930279U (en) | Domestic new trend dehumidifier and inhale sound noise reduction structure thereof | |
| CN219414999U (en) | Refrigerating constant humidity integrated unit | |
| CN221403971U (en) | Cooling tower noise elimination structure and cooling tower | |
| CN116312436A (en) | Metal sound absorption and insulation cover capable of automatically controlling temperature | |
| CN219355775U (en) | Oxygen generator structure with small noise and fast heat dissipation | |
| CN220750864U (en) | Low-noise type cooling tower | |
| CN218918441U (en) | Sound insulation cover | |
| CN216924802U (en) | Integrated water-cooling direct-expansion unit | |
| CN213931225U (en) | Real-time monitoring's constant temperature dehydrating unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |