CN105020876A - Noise reducing filter and air conditioner - Google Patents
Noise reducing filter and air conditioner Download PDFInfo
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- CN105020876A CN105020876A CN201410167817.8A CN201410167817A CN105020876A CN 105020876 A CN105020876 A CN 105020876A CN 201410167817 A CN201410167817 A CN 201410167817A CN 105020876 A CN105020876 A CN 105020876A
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Abstract
The invention discloses a noise reducing filter and an air conditioner and relates to the technical field of air conditioning system pipeline filtering and noise reducing. The filter can achieve a noise reducing function, and the circulation amount of fluid in the filter cannot be reduced. The noise reducing filter comprises a pipe and a filter screen located in the pipe. A spiral noise reducing device is arranged in the filter screen, and the length direction of the spiral noise reducing device is consistent with the main flowing direction of the fluid in the pipe. The noise reducing filter can be applied to air conditioning systems.
Description
Technical field
The present invention relates to air-conditioning system pipeline to filter and noise reduction technology field, particularly relate to a kind of silencing filter and air-conditioning.
Background technology
Along with the raising day by day of people's environmental consciousness, also more and more higher to the requirement of air conditioner noises level.The factor affecting air conditioner noises level is many, wherein except wind is made an uproar and Main Noise Sources except mechanical oscillation noise (as compressor of air conditioner starts noise) is the refrigerant flow noise that the pressure fluctuation of air-conditioning inside causes, specifically: in the pipeline of air-conditioning inside, be provided with electric expansion valve, the operation principle of electric expansion valve is the motion by needle, the reducing narrowed cross section that refrigerant is flowed through, realizes the object of throttling; But meanwhile the refrigerant of high speed and high pressure can produce compressional wave (i.e. pressure fluctuation cause refrigerant flow noise) at the section that narrows, and then produces vibration and the noise by vibration initiation.
In order to reduce the vibration that electric expansion valve in air-conditioning produces and the noise caused by this vibration, general employing damping shock absorption method in prior art, and damping shock absorption method is indirect noise-reduction method, first allows noise send and then blocks noise.Obviously, this method does not abate the noise from the source producing noise.
The refrigerant flow noise that pressure fluctuation causes to be eliminated from source, also have a kind of comparatively conventional method, exactly muffler assembly is set in system pipeline.Muffler assembly can be arranged in filter.
As shown in Figure 1, filter comprises: body 11, screen pack 12, filters rack 13.In order to the function making filter have noise reduction, prior art can realize the integrated of filtering function and silencing function by increasing silk screen layer 14 in screen pack 12, silk screen layer is made up of very tiny silk, also exists tiny to be communicated with gap between silk with silk; When noise is by being converted into heat energy to reach the object reducing noise with its friction during silk screen gap.But, because silk screen layer can play barrier effect to refrigerant, so can refrigerant circulation be reduced.
Summary of the invention
Embodiments of the invention provide a kind of silencing filter and air-conditioning, make filter to play noise elimination function, too much can not reduce again the internal circulating load of fluid in filter.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The invention provides a kind of silencing filter, comprising: body and be arranged in the screen pack of described body; Described screen pack inside is provided with spirality silencing means, and the length direction of described spirality silencing means is consistent with the main flow direction of fluid in described body.
Optionally, one end of described spirality silencing means is positioned at the opening part of described screen pack, and the other end is resisted against the opposite end of the opening of described screen pack.
Optionally, described silencing filter also comprises: be fixedly installed on the filtration rack in described body, and described filtration rack is used for the opening of fixing described screen pack.
Optionally, the filtration rack of silencing filter comprises: sidewall and the barrier sheet be connected with sidewall, and described sidewall is close on described inboard wall of tube body, and the spirality silencing means one end being positioned at the opening part of described screen pack is resisted against on described barrier sheet.
Preferably, the sidewall of silencing filter filtration rack adopts the mode of slot rolling spinning to be fixed on the inwall of described body.
Optionally, the gabarit of spirality silencing means is close on the madial wall of described screen pack.
Optionally, the gabarit of described spirality silencing means and the gabarit of described screen pack are Rotary-table, and the larger one end of two Rotary-table radiuses is all positioned at the side of described filtration rack.
Preferably, the axis of spirality silencing means overlaps with the axis of described screen pack.
Preferably, spirality silencing means is spring.
Present invention also offers a kind of air-conditioning, described air-conditioning comprises any one silencing filter above-mentioned.
Silencing filter provided by the invention and air-conditioning, the flow direction along fluid is provided with spirality silencing means in screen pack inside; Like this when fluid flows through the screen pack being provided with spirality silencing means, the shape of spiral makes silencing means can play the effect of pipe cyclone, fluid is allowed to do swirling motion, reduce fluid pulsation, reduce fluid flow noise, thus reduction system noise, also change into the kinetic energy of swirling fluid by sonorific vibrational energy, to realize silencing function., compare and silk screen layer, spirality silencing means can not too much stop the fluid flowed through meanwhile, thus can not make a big impact to the internal circulating load of fluid in filter to a certain extent, also namely too much can not reduce the internal circulating load of fluid in filter.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the silencing filter that Fig. 1 provides for prior art;
The structural representation of the silencing filter that Fig. 2 provides for the embodiment of the present invention one;
The structural representation of the silencing filter that Fig. 3 provides for the embodiment of the present invention two;
The small-sized household Air Conditioning Cycle schematic diagram that Fig. 4 provides for the embodiment of the present invention three;
The multi-online air-conditioning system circulation schematic diagram that Fig. 5 provides for the embodiment of the present invention three.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it will be appreciated that, orientation or the position relationship of the instruction such as term "left", "right", " interior ", " outward ", " level ", " vertically " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
Embodiment one
As shown in Figure 2, embodiments provide a kind of silencing filter, comprising: body 21 and be arranged in the screen pack 22 of described body 21.
Wherein, the shape of body 21 can reference diagram 2, be the cylindrical of hollow in the middle part of it, two ends have the interface of contraction respectively, the cross section that fluid is flowed through first is expanded and is shunk, thus cause sound wave reflection and have the loss of transmission, also namely have employed the principle of expansion chamber silencer, body can be made to play the effect reducing noise to a certain extent.Certainly, body 21 also can be designed to other shapes, as long as hollow.
The shape of screen pack 22 can reference diagram 2, and its gabarit is Rotary-table and one end has opening.Example, one end (left end namely in figure) that two Rotary-table radiuses are larger has opening 221.Certainly, screen pack 22 shape is not unique, and example, its gabarit can also be cylinder, cone, cube etc.Screen pack 22 is generally fixedly installed in body 21, and existing mode can be adopted to fix, not shown in the example shown.
In order to the function making filter possess noise reduction, in the present embodiment, screen pack 22 inside is provided with spirality silencing means 23, and spirality silencing means 23 is arranged along the main flow direction of fluid in described body, and also namely the length direction of spirality silencing means 23 is consistent with the main flow direction of fluid.
So-called spiral is a kind of shaped form, and the device (also can be described as helical shaped devices) that shape is spiral will allow fluid do swirling motion if be arranged in screen pack 22, reduce fluid pulsation, reduce fluid flow noise, thus reduction system noise, the function therefore in the present invention in order to embody its noise reduction is referred to as spirality silencing means.It should be noted that, shape is that the device of spiral has certain length herein, and that is, shape is that the coil of the device of spiral is not in same plane.
Optionally, spirality silencing means 23 can be spring in this application, and wherein, can be common cylinder helical spring, its gabarit be cylinder, as shown in Figure 2; Can also be Reducing screw spring, its gabarit be Rotary-table or cone.Certainly, the spirality silencing means 23 in the application can also be that shape is identical with spring, but the not flexible device of tool; Such as, spring shape can be made, the non-yielding devices obtained by the material such as aluminium alloy.
Optional again, spirality silencing means 23 can also be many helical structures in this application, and it has at least two nemutogens and coils the shape presented.Such as, can with reference to the shape of two chain coiling gained of DNA in biology (Deoxyribonucleic acid, DNA).
In addition, when fluid flows through silencing filter, fluid flows into from body 21 one end, and the other end flows out.In the present invention, fluid being called the main flow direction of fluid from inflow silencing filter to the direction of flowing out silencing filter, the left and right directions shown in Fig. 2, is also horizontal direction.In order to make the length direction of spirality silencing means 23 consistent with the main flow direction of fluid, spirality silencing means 23 horizontal positioned in Fig. 2.
Wherein, spirality silencing means 23 can be placed in screen pack 22 and not to fix, and preferably spirality silencing means 23 can be fixedly installed in screen pack 22 in the present embodiment.As shown in Figure 2, can the two ends of spirality silencing means 23 be fixed in screen pack 22, example, can the two ends of spirality silencing means be welded on screen pack 22 respectively, the two ends of spirality silencing means can also be articulated on the mesh of screen pack respectively.Certainly, can also only be fixed in screen pack 22 by one end of spirality silencing means 23, the other end is in not to be fixed, as long as ensure that spirality silencing means 23 is arranged along direction of flow.
Like this, when fluid flows through the screen pack being provided with spirality silencing means, spirality silencing means can play the effect of pipe cyclone, fluid is allowed to do swirling motion, reduce fluid pulsation, reduce fluid flow noise, thus reduce system noise, also the kinetic energy of swirling fluid is changed into by sonorific vibrational energy, to realize silencing function.Meanwhile, because spirality silencing means can not too much stop the fluid flowed through, the internal circulating load of fluid in filter can not thus be reduced.The silencing filter provided due to the present embodiment is generally applied in air-conditioning, and therefore so-called fluid can be refrigerant.In addition, in the pipe-line system of reality, there is various pipe fitting, as bend, runner sudden enlargement or reduce, valve, threeway etc.When fluid is through the regional area of these pipelines, flow velocity size and Orientation is forced to changing sharply, thus occurs the shock of fluid particle, produces whirlpool, the separation of Secondary Flow and flowing and attached wall phenomenon again.Now due to the effect of viscosity, between fluid particle, there is violent friction and momentum-exchange, thus hamper the motion of fluid.The loss that fluid produces at this partial barriers place is called local resistance loss.The present embodiment by arranging spirality silencing means in screen pack, and when flowing through the spirality silencing means in filter screen when fluid, spirality silencing means has cushioned the flow velocity flowing through fluid, thus reduce the local resistance loss of fluid.
It should be noted that, as long as have the spirality silencing means 23 that the main flow direction along fluid is arranged in the present embodiment in screen pack 22 inside, whether the length of spirality silencing means 23, cross section size and spirality silencing means 23 axis are overlapped with body 21 axis and all there is no other requirements.Example, the length of the spirality silencing means 23 in Fig. 2 is much smaller than the length of screen pack 22, and spirality silencing means 23 cross section is much smaller than the screen pack cross section of corresponding position, now also can play a role for noise reduction, and the internal circulating load of fluid can not be reduced.
Embodiment two
Present embodiments provide a kind of preferred silencing filter, its body and screen pack can reference examples one, do not add repeat at this.The present embodiment is only introduced in detail to further limiting.Wherein, the spirality silencing means in the present embodiment for spring, because spring is spirality in the present embodiment, for this spring hereinafter referred to as helical spring.
Silencing filter can be applied to air-conditioning, and air-conditioning refrigerant in process of refrigerastion flows along a direction, and in heating operations, refrigerant can along its flowing in the other direction.As shown in Figure 3, when refrigerant reverse flow from right to left, the distortion of screen pack is easily caused.In order to address this problem, one end 231 of embodiment of the present invention helical spring 23 is fixed in described screen pack 22, and the other end 232 is resisted against the opening opposite end 222 of described screen pack.Like this, helical spring 23 plays certain supporting role in screen pack 22 inside, thus strengthens the confining force of screen pack 22 opening opposite end, reduces the risk of the screen pack deformation failure brought due to refrigerant reverse flow.
For fixing helical spring one end 231 easily, embodiments provide a kind of preferred version.Above-mentioned silencing filter also comprises: be fixedly installed on the filtration rack 24 in body 21, filters the opening 221 of rack 24 for fixing screen pack; Filter rack 24 to comprise: sidewall 241 and the barrier sheet 242 be connected with sidewall 241, sidewall 241 is close on body 21 inwall, and the helical spring one end 231 being positioned at the opening part of described screen pack is resisted against on barrier sheet 242.This just requires the roughly equal to the length of opening opposite end from opening of the drift of helical spring 23 (length when not stressing) and screen pack.
Its process of installing can be first be placed in screen pack 22 by helical spring 23, then is fixed on by screen pack 22 on filtration rack 24, and now, helical spring 23, screen pack 22 and filtration rack 24 three become a single piece.Afterwards, this single piece is placed in body 21, and filtration rack 24 is fixed in body.
Fixing mode of filtering rack 24 can have multiple, such as, can be the modes such as welding, in the present embodiment preferably, adopts the mode of slot rolling spinning to be fixed on the inwall of body 21 by the sidewall filtering rack 24.
The mode of slot rolling spinning can be: the recessed pinch roller utilizing channelling machine to rotate drives pipe to rotate, convex pinch roller slowly pressurizes to pipe under oil cylinder effect, thus the groove (being grooves from the words viewed from tube exterior, is protruding from the words viewed from tube interior) needed for being formed.
Specifically in embodiments of the present invention, the mode of slot rolling spinning can be adopted to form groove in the outside of body 21 and (i.e. the inwall of body 21 to form projection, hereafter be collectively referred to as projection), protruding quantity does not limit, as long as the sidewall filtering rack can be fixed.Example can be 3 projections as shown in Figure 1.But filter rack 24 in order to more fixing, as shown in Figure 3, preferably the mode of slot rolling spinning is being adopted on the inwall of body 21, to arrange two to protruding 211 (i.e. 4 projections) in the present embodiment, two pairs of projections 211 can block the sidewall filtering rack 24, thus filtration rack 24 can not move left and right.
Further, if the gabarit of helical spring 23 does not contact with the madial wall of screen pack 22, so when refrigerant flows in the filter, the sidewall of screen pack 22 is also easily out of shape.Therefore, strengthen the effect of screen pack 22 confining force to give full play to helical spring 23, therefore preferred in the present embodiment, the gabarit of helical spring 23 is close on the madial wall of screen pack 22, to support the sidewall of screen pack 22.
As described in embodiment one, the gabarit of helical spring 23 and the gabarit of screen pack 22 can be Rotary-table, and both shape is consistent, and the gabarit for helical spring 23 is close to and is provided condition with the madial wall of screen pack 22.Now, be preferably the larger one end of two Rotary-table radiuses and be all positioned at the side of filtering rack 24, that is, the opening 221 of screen pack 22 is larger than the radius of the opening opposite end 222 of screen pack, and the radius of helical spring one end 231 is also large than the radius of the helical spring other end 232.
In addition, when helical spring 23 is placed on screen pack 22 inside along direction of flow, if helical spring axis does not overlap with the axis of screen pack, helical spring can produce cyclonic action to the fluid that flows through, and does not flow through helical spring fluid to another part and be not subject to cyclonic action.Meanwhile, the flow velocity of the fluid of eddy flow is not had to be greater than the flow velocity of the fluid through eddy flow, so do not have the flow of swirling fluid will be greater than flow through swirling fluid, thus cause screen pack to be partial to there is no the fluid side of eddy flow, screen pack is offset, and the flow direction of fluid can produce break-in along with the skew of screen pack.For making helical spring 23 can produce more uniform cyclonic action to fluid, when making fluid flow therein, can not produce break-in because of screen pack skew, preferably, the axis of helical spring 23 overlaps with the axis of screen pack 22 simultaneously.
Embodiment three
Existing air-conditioning can be small-sized household air-conditioning, i.e. one-to-one; Can also be multi-online air-conditioning system, namely one drag many.One-to-one refers to an off-premises station connects indoor set air-conditioning system by pipe arrangement; One drags the air-conditioning system referring to an off-premises station more and connected more than two (namely at least two) indoor sets by pipe arrangement.
No matter all can comprise above-mentioned silencing filter for small-sized household air-conditioning or multi-online air-conditioning system.Based on this, as shown in Figure 4, Figure 5, embodiments provide a kind of air-conditioning, comprising: off-premises station 31 and indoor set 32.Wherein, off-premises station 31 generally comprises: condenser 311, compressor 312; Certainly, for ensureing the reliability of air-conditioning system, off-premises station 31 can also further comprise oil eliminator 313, gas-liquid separator 314, but for air-conditioning, these two parts are not necessary.Indoor set 32 comprises evaporimeter 321.Wherein, the air-conditioning shown in Fig. 4 comprises: an off-premises station 31 and an indoor set 32.Air-conditioning shown in Fig. 5 comprises: an off-premises station 31 and two indoor sets 32; Certainly the air-conditioning system comprising more than three indoor sets 32 is suitable for too.
Further, air-conditioning duct is provided with throttling arrangement 41.Generally speaking, off-premises station 31 pipeline throttling arrangement 41 be can be provided with and the both sides of throttling arrangement 41 or the silencing filter 42 (diagram arranges silencing filter 42 respectively for the both sides at throttling arrangement 41) of side are arranged in; Wherein, silencing filter 42 can be any one silencing filter in embodiment one or embodiment two; Further alternative, as shown in Figure 4 and Figure 5, the pipeline of indoor set 32 also can be provided with throttling arrangement 41 and be arranged in the both sides of throttling arrangement 41 or the silencing filter 42 (diagram arranges silencing filter 42 respectively for the both sides at throttling arrangement 41) of side.
Wherein, the throttling arrangement in above-mentioned air-conditioning can be electric expansion valve, capillary throttle device or brass throttle valve body etc.Select electric expansion valve in embodiments of the present invention, and dirty stifled for preventing it from occurring, about electric expansion valve, all will filter be set.In order to make the filter in air-conditioning play noise elimination function, the internal circulating load of fluid in filter can not be reduced again, also can not increase the local resistance loss of fluid simultaneously, thus preferably adopt the silencing filter that above-described embodiment provides.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a silencing filter, comprising: body and be arranged in the screen pack of described body; It is characterized in that, described screen pack inside is provided with spirality silencing means, and the length direction of described spirality silencing means is consistent with the main flow direction of fluid in described body.
2. silencing filter according to claim 1, is characterized in that, one end of described spirality silencing means is fixed in described screen pack, and the other end is resisted against the opening opposite end of described screen pack.
3. silencing filter according to claim 2, is characterized in that, described silencing filter also comprises: be fixedly installed on the filtration rack in described body, and described filtration rack is used for the opening of fixing described screen pack.
4. silencing filter according to claim 3, it is characterized in that, described filtration rack comprises: sidewall and the barrier sheet be connected with sidewall, and described sidewall is close on described inboard wall of tube body, and the spirality silencing means one end being positioned at the opening part of described screen pack is resisted against on described barrier sheet.
5. silencing filter according to claim 4, is characterized in that, the sidewall of described filtration rack adopts the mode of slot rolling spinning to be fixed on the inwall of described body.
6. silencing filter according to claim 1, is characterized in that, the gabarit of described spirality silencing means is close on the madial wall of described screen pack.
7. the silencing filter according to any one of claim 1-6, is characterized in that, the gabarit of described spirality silencing means and the gabarit of described screen pack are Rotary-table, and the larger one end of two Rotary-table radiuses is all positioned at the side of described filtration rack.
8. silencing filter according to claim 1, is characterized in that, the axis of described spirality silencing means overlaps with the axis of described screen pack.
9. the silencing filter according to any one of claim 1-6 or 8, is characterized in that, described spirality silencing means is spring.
10. an air-conditioning, is characterized in that, described air-conditioning comprises the silencing filter described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410167817.8A CN105020876A (en) | 2014-04-24 | 2014-04-24 | Noise reducing filter and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410167817.8A CN105020876A (en) | 2014-04-24 | 2014-04-24 | Noise reducing filter and air conditioner |
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| CN105020876A true CN105020876A (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410167817.8A Pending CN105020876A (en) | 2014-04-24 | 2014-04-24 | Noise reducing filter and air conditioner |
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Cited By (6)
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| CN107289678A (en) * | 2016-04-13 | 2017-10-24 | 珠海格力电器股份有限公司 | Microchannel heat exchanger and heat pump water heater |
| CN110131420A (en) * | 2018-02-08 | 2019-08-16 | 浙江三花智能控制股份有限公司 | Electric expansion valve and its manufacturing method |
| CN110152369A (en) * | 2018-02-13 | 2019-08-23 | 新昌县四通机电有限公司 | Filter assemblies and filter |
| CN110152370A (en) * | 2018-02-13 | 2019-08-23 | 新昌县四通机电有限公司 | Filter assemblies and filter |
| WO2021184828A1 (en) * | 2020-03-19 | 2021-09-23 | 青岛海尔空调器有限总公司 | Ejector and air conditioning device |
| WO2022217815A1 (en) * | 2021-04-12 | 2022-10-20 | 广东美的暖通设备有限公司 | One-way valve and air conditioning system |
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Application publication date: 20151104 |