CN207702765U - A kind of refrigeration that can reduce noise or heat pump unit gas exhaust piping - Google Patents
A kind of refrigeration that can reduce noise or heat pump unit gas exhaust piping Download PDFInfo
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- CN207702765U CN207702765U CN201721611851.5U CN201721611851U CN207702765U CN 207702765 U CN207702765 U CN 207702765U CN 201721611851 U CN201721611851 U CN 201721611851U CN 207702765 U CN207702765 U CN 207702765U
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- noise
- exhaust
- heat pump
- pump unit
- inlet channels
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- Exhaust Silencers (AREA)
- Compressor (AREA)
Abstract
The utility model discloses a kind of refrigeration that can reduce noise or heat pump unit gas exhaust pipings, for the compressor with double-exhaust port；It is characterized in that tool, there are two inlet channel, which converges and directly forms an exhaust passage, and for length of two inlet channels before point there are length difference, the length difference is directly proportional to the wavelength of noise waves in two inlet channels；The import of two inlet channels and two exhaust outlets of compressor are respectively communicated with.Compare exhaust silencer, and principle is simpler, and of low cost, not will produce the additional pressure loss.
Description
Technical field
The utility model is related to freeze（Heat pump）A kind of unit, and in particular to refrigeration compressor exhaust with double-exhaust port
The noise reduction technology of pipeline.
Background technology
Refrigeration（Heat pump）Unit generally existing exhaust noise, these exhaust noises become audible sound source in system, influence
The noise of entire unit and vibration.The method for cutting down exhaust noise is usually to install to resist on exhaust outlet of compressor or discharge duct
Property silencer, reflection and interference using sound wave in reactive muffler inside cavity reach noise elimination purpose.
Reactive muffler usually will produce certain pressure loss, influence unit performance, for complicated silencer,
Also it is easy due to Oil-gas Separation long-pending oil in its noise elimination cavity body, needs to design special oil return line.Especially for double
For the compressor of exhaust outlet, individually silencer is installed on every exhaust pipe and not only needs higher cost, but also will produce
The larger pressure loss, influences unit performance.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of refrigeration that can reduce noise or heat pump unit exhaust
Pipeline, which, which is suitable for the refrigeration compressor with double-exhaust port, effectively reduces compressor air-discharging noise, and the exhaust that compares disappears
Sound device, principle is simpler, and of low cost, not will produce the additional pressure loss；Also avoid long-pending oil simultaneously.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution：
A kind of refrigeration that can reduce noise or heat pump unit gas exhaust piping, the compressor for exhaust outlet there are two have；
It is characterized in that tool is there are two inlet channel, which converges and direct one exhaust passage of formation, two
There are length difference, the settings of the length difference so that two row are made an uproar in two inlet channels for length of a inlet channel before point
Acoustic wave energy mutually neutralizes；The import of two inlet channels and two exhaust outlets of compressor are respectively communicated with.
Further, the caliber of two inlet channels forms an exhaust passage in meet, and two inlet channels
Converge in Y types with exhaust passage central axes central axes.
Further, respectively the caliber ratio of caliber and exhaust pipe is 1 to two air inlet pipe：（0.6-1.6）.
Further, wavelength of two inlet channels in the length difference before point and noise waves in two inlet channels
It is directly proportional.
Further, length difference is the odd-multiple of the wavelength half value of noise waves in two inlet channels.
When noise waves are respectively from when two inlet channel air inlets propagate to point, since propagation distance differs wavelength
The odd-multiple of half value, therefore two row noise waves are just that wave crest and trough converge, according to noise waves superposition and principle of interference, two row
The energy offset of noise waves, to achieve the purpose that reduce exhaust noise.
Secondly, when conventional muffler long-pending oil passes through silencer expansion chamber due to gas mixture, flow velocity reduces, major diameter oil
Drop is easy because the influence of gravity is separated from gas mixture, if muffler outlet is higher than silencer expansion chamber bottom,
Then these refrigerator oils separated can not flow out silencer, can only be deposited in silencer expansion chamber bottom.This programme due to
There is no expansion chamber, air velocity not to reduce, oil droplet can rely on the inertia that speed generates by exhaust pipe, therefore this programme is not
It will produce long-pending oil.
Description of the drawings
Fig. 1 is the gas exhaust piping structure chart of the utility model.
Each reference numeral is as follows in Fig. 1：The air inlet of first passage 1, second channel 2, third channel 3, first passage
1.1, the air inlet 2.1 of second channel, the gas outlet 3.1 of third channel, point 4.
Attached drawing 2 is the application structure figure of the utility model.
Specific implementation mode
In order to further illustrate the technical solution of the utility model, 1 pair of the utility model progress is detailed below in conjunction with the accompanying drawings
Explanation.
In attached drawing 1, the refrigeration that noise can be reduced or heat pump unit gas exhaust piping of the utility model, including first passage
1, second channel 2 and third channel 3, the sealing of three channels are connected, wherein the length of first passage and the length of second channel it
Between there are length differences.
Further, by the flow direction of cold media gas, gas is respectively from the air inlet of first passage 1.1 and second channel
Air inlet 2.1 flow into, from the gas outlet of third channel 3.1 flow out.
Further, the central axes in three channels meet at point 4.The caliber of first passage 1, second channel 2
A third channel 3 is gradually smoothly formed in meet, and in first passage 1, the central axes of second channel 2 and third channel 3
Axis converges in round and smooth Y types, and either there is no the blending spaces for specially expanding or expanding on each pipeline for junction.Two into
The caliber of tracheae and escape pipe can be identical or different, there is no limit.It is preferred that the pipe of two air inlet pipe respectively caliber and exhaust pipe
Diameter ratio is 1：（0.6-1.6）.
Further, the length of first passage is the distance that first passage air inlet 1.1 arrives point 4, second channel
Length is the distance that second channel air inlet 2.1 arrives point 4.
The value of the length difference is the odd-multiple of the wavelength half value of noise waves, and can rationally be selected in certain deviation
It takes, namely（λ/2）*N-（λ/2）* 0.2)~(（λ/2）*N+（λ/2）*0.1)；Wherein λ is indicated in first passage and second channel
The wavelength of noise waves, N are odd number.The import of the first passage 1, second channel 2 is connected to two exhaust outlets of compressor respectively
When the noise waves that wavelength is λ propagate to point 4 from air inlet 1.1 and air inlet 2.1 respectively, since propagation distance difference is set
Multiple is determined, therefore two row noise waves are just that wave crest and trough converge, according to noise waves superposition and principle of interference, two row noise waves
Energy offset, to achieve the purpose that reduce exhaust noise.
Finally, when conventional muffler long-pending oil passes through silencer expansion chamber due to gas mixture, flow velocity reduces, major diameter oil
Drop is easy because the influence of gravity is separated from gas mixture, if muffler outlet is higher than silencer expansion chamber bottom,
Then these refrigerator oils separated can not flow out silencer, can only be deposited in silencer expansion chamber bottom.This programme due to
There is no expansion chamber, air velocity not to reduce, oil droplet can rely on the inertia that speed generates by exhaust pipe, therefore this programme is not
It will produce long-pending oil.
Fig. 2 is the application structure figure of this gas exhaust piping.By two exhaust outlets of compressor respectively with the utility model two
A air inlet（Air inlet 1.1 and air inlet 2.1）It is respectively communicated with.
Claims (5)
1. a kind of refrigeration that can reduce noise or heat pump unit gas exhaust piping, for having the compressor there are two exhaust outlet；Its
Be characterized by having two inlet channels, two inlet channel central axes converge and directly formed an exhaust passage, two
There are length difference, the settings of the length difference to make two row noises in two inlet channels for length of the inlet channel before point
Wave energy mutually neutralizes；The import of two inlet channels and two exhaust outlets of compressor are respectively communicated with.
2. the refrigeration according to claim 1 that noise can be reduced or heat pump unit gas exhaust piping, it is characterised in that two
The caliber of inlet channel forms an exhaust passage, and the central axes of two inlet channels and exhaust passage central axes in meet
It is in Y types to converge.
3. the refrigeration according to claim 1 or 2 that noise can be reduced or heat pump unit gas exhaust piping, it is characterised in that two
A air inlet pipe is respectively 1 with the caliber ratio of exhaust pipe：（0.6-1.6）.
4. the refrigeration according to claim 1 that noise can be reduced or heat pump unit gas exhaust piping, it is characterised in that two
Inlet channel is directly proportional to the wavelength of noise waves in two inlet channels in the length difference before point.
5. the refrigeration according to claim 4 that noise can be reduced or heat pump unit gas exhaust piping, it is characterised in that length
Difference is the odd-multiple of the wavelength half value of noise waves in two inlet channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721611851.5U CN207702765U (en) | 2017-11-28 | 2017-11-28 | A kind of refrigeration that can reduce noise or heat pump unit gas exhaust piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721611851.5U CN207702765U (en) | 2017-11-28 | 2017-11-28 | A kind of refrigeration that can reduce noise or heat pump unit gas exhaust piping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207702765U true CN207702765U (en) | 2018-08-07 |
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ID=63023970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721611851.5U Active CN207702765U (en) | 2017-11-28 | 2017-11-28 | A kind of refrigeration that can reduce noise or heat pump unit gas exhaust piping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207702765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822785A (en) * | 2018-08-14 | 2020-02-21 | Bsh家用电器有限公司 | Domestic refrigeration appliance |
-
2017
- 2017-11-28 CN CN201721611851.5U patent/CN207702765U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822785A (en) * | 2018-08-14 | 2020-02-21 | Bsh家用电器有限公司 | Domestic refrigeration appliance |
| CN110822785B (en) * | 2018-08-14 | 2022-10-14 | Bsh家用电器有限公司 | Domestic refrigeration appliance |
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