CN201616265U - Novel phase-reversing tube - Google Patents
Novel phase-reversing tube Download PDFInfo
- Publication number
- CN201616265U CN201616265U CN2009202384439U CN200920238443U CN201616265U CN 201616265 U CN201616265 U CN 201616265U CN 2009202384439 U CN2009202384439 U CN 2009202384439U CN 200920238443 U CN200920238443 U CN 200920238443U CN 201616265 U CN201616265 U CN 201616265U
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- Prior art keywords
- phase
- reversing tube
- tube body
- groove
- reversing
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Abstract
The utility model discloses a novel phase-reversing tube, which is provided with a phase-reversing tube body, wherein one end of the phase-reversing tube body is provided with an outer opening, and the other end thereof is provided with an inner opening; and a plurality of axially extending grooves are uniformly distributed at the periphery of the inner wall of the phase-reversing tube body. The novel phase-reversing tube has simple structure, and the axially extending grooves are uniformly distributed at the periphery of the inner wall of the phase-reversing tube body, thereby improving the sound energy conversion efficiency of the phase-reversing tube, increasing the low-frequency energy, improving the instaneous response and lowering the vortex noise, so as to reduce the distortion of the tone quality and improving the effect of the tone quality.
Description
Technical field
The utility model relates to a kind of phase-reversing tube, is specifically related to a kind of novel phase-reversing tube of architecture advances, belongs to the sound system technical field.
Background technology
Along with the social progress people also promote gradually to the demand of act of music.Follow the development of sound technique simultaneously, various high-quality stereo set is constantly released, and also is various aspect audio amplifier, emerges in an endless stream.And the audio amplifier of sound system is a main product with opening box (inverted phase type/band general formula audio amplifier etc.) always.Sound box inverted tube mainly is to be used to cooperate tank-volumes to form a heimholtz resonator, with loudspeaker backward radiative acoustic wave utilize, the outer opening of sound box inverted tube has just become ' second vibrating diaphragm ' of being instigated by loudspeaker back side radiative acoustic wave, working medium radiation sound wave towards periphery, and with front radiative acoustic wave superposition.The existing structural defective of traditional phase-reversing tube makes its resistance air flow wadding disorderly cause the acoustic energy conversion efficiency low, and transient response is poor, and the eddy current noise is big, influences tonequality.
The utility model content
The purpose of this utility model is at the problems referred to above weak point, provides that a kind of tonequality is good, the novel sound box inverted tube of high-fidelity.
In order to achieve the above object, the utility model is by the following technical solutions:
Novel phase-reversing tube, it has a phase-reversing tube body, and described phase-reversing tube body one end is outer opening, and the other end is an inner opening, and described phase-reversing tube inboard wall of tube body circumferentially is evenly distributed with some axially extended grooves.
Further, above-mentioned groove is non-quadrilateral groove.
Further concrete again, above-mentioned groove groove width is dwindled gradually from notch to bottom land.Above-mentioned groove groove width is dwindled from notch to bottom land linearity; Perhaps, above-mentioned groove groove width is dwindled from notch to bottom land parabolic linearity.
Above-mentioned outer opening is a bell mouth shape.
Above-mentioned inner opening is a bell mouth shape.
The utility model is simple in structure, and the phase-reversing tube inboard wall of tube body circumferentially is evenly distributed with some axially extended grooves, and groove structure has improved phase-reversing tube acoustic energy conversion efficiency, increase low frequency energy, improved transient response, reduced the eddy current noise, thereby reduce quality distortion, promoted acoustical quality.
Description of drawings
Fig. 1 is for adopting the phase inverted cabinet inner structure synoptic diagram of the utility model phase-reversing tube;
Fig. 2 is for adopting the phase inverted cabinet side view of the utility model phase-reversing tube;
Fig. 3 is the utility model phase-reversing tube perspective view;
Fig. 4 is a V-type cross section groove synoptic diagram;
Fig. 5 is a U type arc transition cross section groove synoptic diagram.
Below by the drawings and specific embodiments the utility model is further described:
Embodiment
As Fig. 1 and 2, novel phase-reversing tube described in the utility model is the important component part of phase inverted cabinet, and phase inverted cabinet comprises casing 3, loudspeaker 2 and phase-reversing tube 1.Shown in Fig. 2 and 3, phase-reversing tube 1 of the present utility model, it has a phase-reversing tube body 11, and described phase-reversing tube body 11 1 ends are outer opening 12, the other end is an inner opening 13, and the inwall of described phase-reversing tube body 11 circumferentially is evenly distributed with some axially extended grooves 14.
Above-mentioned groove 14 is non-quadrilateral groove, and particularly, above-mentioned groove 14 is non-square groove, non-dovetail groove or is non-rhombus groove etc.Further, above-mentioned groove 14 groove widths are dwindled gradually from notch to bottom land.Particularly, above-mentioned groove 14 groove widths are dwindled from notch to bottom land linearity, as the xsect of groove 14 V-shaped (shown in Fig. 2,3,4); Perhaps, above-mentioned groove 14 groove widths are dwindled from notch to bottom land parabolic linearity, are U type arc transition (as shown in Figure 5) or are arbitrary circular arc shape as the xsect of groove 14.
Further concrete, above-mentioned outer opening is a bell mouth shape, and above-mentioned inner opening also is a bell mouth shape.
Below by result of use the utility model is further described:
As Fig. 1, phase inverted cabinet comprises casing 3, loudspeaker 2, phase-reversing tube 1, during speaker operation, when low frequency, back side radiative acoustic wave is after case internal volume and phase-reversing tube are formed this heimholtz resonator conversion, sound wave falls turnback, opening is to case external space radiative acoustic wave outside phase-reversing tube, with loudspeaker radiative acoustic wave superposition forward, thereby effectively utilized the radiation acoustic energy at the back side.Make its resistance air flow wadding disorderly cause the acoustic energy conversion efficiency low because of passing the existing structural defective of traditional phase-reversing tube, transient response is poor, and the eddy current noise is big, influences tonequality.Novel phase-reversing tube of the present utility model is circumferentially to be evenly distributed with some axially extended grooves at the phase-reversing tube inboard wall of tube body, because the effect of groove makes the effect wall of phase-reversing tube inwall increase, because the effect of wall attachment effect is accelerated the velocity of propagation of sound wave, make air particles generation ordering simultaneously and do not produce the eddy current distortion when sound wave moves in body.Phase-reversing tube structure of the present utility model had both made full use of the advantage of phase-reversing tube and because of groove is set, had improved the acoustic energy conversion efficiency, had increased low frequency energy, improved transient response, reduced the eddy current noise.Thereby reduce quality distortion, promoted acoustical quality.
Claims (6)
1. novel phase-reversing tube has a phase-reversing tube body, and described phase-reversing tube body one end is outer opening, and the other end is an inner opening, it is characterized in that: described phase-reversing tube inboard wall of tube body circumferentially is evenly distributed with some axially extended grooves.
2. novel phase-reversing tube according to claim 1 is characterized in that: described groove groove width is dwindled gradually from notch to bottom land.
3. novel phase-reversing tube according to claim 2 is characterized in that: described groove groove width is dwindled from notch to bottom land linearity.
4. novel phase-reversing tube according to claim 2 is characterized in that: described groove groove width is dwindled from notch to bottom land parabolic linearity.
5. novel phase-reversing tube according to claim 1 is characterized in that: described outer opening is a bell mouth shape.
6. novel phase-reversing tube according to claim 1 is characterized in that: described inner opening is a bell mouth shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202384439U CN201616265U (en) | 2009-11-04 | 2009-11-04 | Novel phase-reversing tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202384439U CN201616265U (en) | 2009-11-04 | 2009-11-04 | Novel phase-reversing tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616265U true CN201616265U (en) | 2010-10-27 |
Family
ID=43002630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202384439U Expired - Fee Related CN201616265U (en) | 2009-11-04 | 2009-11-04 | Novel phase-reversing tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201616265U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105491480A (en) * | 2015-10-29 | 2016-04-13 | 李世煌 | Audio radiant tube as well as module and loudspeaker box provided with audio radiant tube |
| CN110809206A (en) * | 2019-09-27 | 2020-02-18 | 深圳市火乐科技发展有限公司 | Phase inversion type sound box and micro projector |
-
2009
- 2009-11-04 CN CN2009202384439U patent/CN201616265U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105491480A (en) * | 2015-10-29 | 2016-04-13 | 李世煌 | Audio radiant tube as well as module and loudspeaker box provided with audio radiant tube |
| CN110809206A (en) * | 2019-09-27 | 2020-02-18 | 深圳市火乐科技发展有限公司 | Phase inversion type sound box and micro projector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20131104 |