SU977819A1

SU977819A1 - Air conditioner

Info

Publication number: SU977819A1
Application number: SU813272908A
Authority: SU
Inventors: Петр Петрович Харитошин; Юрий Николаевич Власов
Original assignee: Предприятие П/Я М-5703
Priority date: 1981-04-08
Filing date: 1981-04-08
Publication date: 1982-11-30

Description

Изобретение относится к горному делу и может быть использовано для кондиционирования воздуха в подземньсг. условиях.The invention relates to mining and can be used for air conditioning in the underground. conditions.

Известен кондиционер, включающий корпус с установленным в нем детандером, 5 выхлопную трубу детандера, выполненную с окнами, глушитель шума выхлопа детан* дера, выполненный в виде корпуса, обли.'- * цованного звукопоглощающим материалом, с концентрично расположенными в нем 10 обтекателем со звукопоглощающим материалом, внутри которого размещены резонаторные камеры, сообщенные с выхлопной трубой детандера, и глушитель шума вентилятора (13 . ^,5 Air conditioning is known, including a housing with an expander installed in it, 5 an expander exhaust pipe made with windows, an exhaust muffler * dedera silencer made in the form of a housing lined with sound-absorbing material, with a 10 fairing with sound-absorbing concentric located in it material, inside of which there are resonator chambers in communication with the exhaust pipe of the expander, and a fan noise muffler (13. ^{, 5}

Недостатком этого кондиционера является невысокая эффективность шумопоглощения, так как аэродинамический шум, создаваемый вентилятором, заглушается только со стороны всасывания и не заглушается со стороны нагнетания.The disadvantage of this air conditioner is its low noise absorption efficiency, since the aerodynamic noise generated by the fan is drowned out only on the suction side and is not drowned out on the discharge side.

Наиболее близким по технической сущности к предлагаемому является кон— диционер, включающий корпус с установленным в нем детандером, выхлопную трубу детандера, выполненную с окнами, глушитель шума выхлопа детандера, выполненный в виде облицованного звукопоглощающим материалом корпуса, глушитель шума вентилятора и соосно расположенную выхлопной трубе винтовую перфорированную ;спираль с переменным наружным диаметром, внутренняя полость которой заполнена звукопоглощающим материалом f 2 ] .The closest in technical essence to the proposed one is the air conditioner, which includes a housing with an expander installed in it, an expander exhaust pipe made with windows, an expander exhaust silencer made in the form of a housing lined with sound-absorbing material, a fan noise muffler and a coaxially arranged exhaust pipe screw perforated, a spiral with a variable outer diameter, the inner cavity of which is filled with sound-absorbing material f 2].

Недостатком известного устройства является сложность конструкции, вызванная необходимостьювыполнения специальных резонаторных камер в глушителе шума выхлопа детандера, что приводит к увеличению металлоемкости и массы глу— . шителя и, как следствие, кондиционера в целом.A disadvantage of the known device is the design complexity caused by the need to perform special resonator chambers in the exhaust silencer of the expander, which leads to an increase in the metal consumption and the mass of the glue. shutter and, as a result, the air conditioner as a whole.

Целью изобретения — повышение эффективности шумоглушения и снижение металлоёмкости.The aim of the invention is to increase the efficiency of sound attenuation and reduce metal consumption.

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Поставленная цель достигается тем, что в кондиционере, включающем корпус с размещенным в нем детандером, выхлопную трубу детандера, выполненную с окнами, глушитель шума выхлопа детандера, выполненный в виде облицованного звукопоглощающим материалом корпуса, глушитель шума вентилятора и соосно . расположенную выхлопной трубе винтовую перфорированную спираль с переменным наружным диаметром, внутренняя полость которой заполнена звукопоглощающим материалом, винтовая перфорированная спираль закреплена на выхлопной трубе, при этом внутренняя полость спирали сообщена с окнами выхлопной трубы.This goal is achieved by the fact that in an air conditioner including a housing with an expander placed therein, an expander exhaust pipe made with windows, an expander exhaust silencer made in the form of a housing lined with sound-absorbing material, a fan silencer and coaxial. a perforated spiral spiral with a variable outer diameter located in the exhaust pipe, the inner cavity of which is filled with sound-absorbing material, a perforated spiral spiral is fixed to the exhaust pipe, while the inner cavity of the spiral is in communication with the exhaust pipe windows.

Таким образом, внутренний объём спирали является резонаторными камерами глушителя выхлопа детандера, что позволяет исключить массивную конструкцию обтекателя. .Thus, the internal volume of the spiral is the resonator chambers of the silencer exhaust muffler, which eliminates the massive structure of the fairing. .

На 'чертеже представлен кондиционер. Кондиционер состоит из корпуса 1, детандера 2 с вентилятором 3, глушителя 4 шума вентилятора, снабженного обтекателем 5 с лопатками 6, глушителя шума 7 выхлопа детандера с корпусом и полой винтовой перфорированной спиралью 9 с переменным наружным диаметром и шагом, кратным· . четверти длины ₃₀волны собственной частоты колебания вен-, тилятора, внутренняя полость которой заполнена звукопоглотителем 10, закрепленной на выхлопной трубе 11, в стенках которой выполнены окна 12, при этом внутренняя полость спирали сообщена с окнами 12 выхлопной трубы 11.The drawing shows air conditioning. The air conditioner consists of a housing 1, an expander 2 with a fan 3, a silencer 4 for a fan noise fitted with a cowl 5 with blades 6, a silencer 7 for an exhaust expander with a housing and a hollow screw perforated spiral 9 with a variable outer diameter and a multiple of ·. a quarter of the wavelength _{30 of the} natural frequency of the oscillation of the fan, the inner cavity of which is filled with a sound absorber 10, mounted on the exhaust pipe 11, the walls of which are made windows 12, while the internal cavity of the spiral is in communication with the windows 12 of the exhaust pipe 11.

Кондиционер работает следующим образом.Air conditioning works as follows.

Сжатый воздух из пневмомагистрали поступает в установленный в корпусе 1 детандер 2 и приводит во вращение вентилятор 3,который создает направленный поток воздушной струи. Звуковые волны воздушного потока, взаимодействуя с лопатками 6, закреплёнными на обтекателе 5 глушителя 4 шума вентилятора и полой винтовой перфорированной спиралью 9 с переменным наружным диаметром, внутренняя полость которой заполнена звукопоглотителем' 10, установленной на выхлопной трубе 11 в корпусе 8 глушителя 7 шума выхлопа детандера, теряют свою энергию в звукопоглотителе. Так как у спирали 9 шаг кратен четверти длины волны собственной частоты колебаний вентилятора, то звуковая волна этой частоты, попадая между спиральными витками, заглушается как в четверть-волновом резонаторе, чем обеспечивается глушение аэродинамического шума вентилятора 3. Другой составляющей шума кондиционера является выхлоп детандера.Compressed air from the pneumatic line enters the expander 2 installed in the housing 1 and drives the fan 3, which creates a directed stream of air stream. Sound waves of the air flow, interacting with the blades 6, mounted on the cowl 5 of the silencer 4 fan noise and a hollow screw perforated spiral 9 with a variable outer diameter, the inner cavity of which is filled with a sound absorber '10, mounted on the exhaust pipe 11 in the housing 8 of the silencer 7 of the expander noise muffler 7 , lose their energy in a sound absorber. Since the spiral 9 has a step that is a multiple of a quarter wavelength of the natural frequency of the fan’s vibrations, the sound wave of this frequency, falling between the spiral turns, is drowned out as in a quarter-wave resonator, which ensures the damping of the aerodynamic noise of fan 3. Another component of the air conditioner noise is the expander exhaust.

Звуковые волны при выхлопе, распространяясь по выхлопной трубе 11, достигают окон 12, выполненных в её стенках, и попадают в полую винтовую перфорированную спираль 9 с переменным наружным диаметром, заполненную звукопоглотителем 10, где и заглушаются.Sound waves during the exhaust, propagating through the exhaust pipe 11, reach the windows 12 made in its walls, and fall into a hollow screw perforated spiral 9 with a variable outer diameter, filled with a sound absorber 10, where they are muffled.

Поскольку витки спирали 9 имеют различный диаметр, а следовательно, и объём, тр эффективность заглушения шума выхлопа¹’детандера возрастает, так как каждый виток, сообщенный с выхлопной трубой 11 через окна 12, по существу, является четвертьволновым резонаторным глушителем, настроенным на определенную частоту.Since the coils of the spiral 9 have a different diameter, and therefore the volume, mp, the noise damping efficiency of the expander exhaust ¹ 'increases, since each coil connected with the exhaust pipe 11 through the windows 12 is essentially a quarter-wave resonator muffler tuned to a certain frequency .

Таким образом, полая винтовая перфорированная спираль 9 заглушает одновременно и шум от вращающегося вентилятора 3, и шум выхлопа детандера 2.Thus, the hollow helical perforated spiral 9 drowns out at the same time the noise from the rotating fan 3 and the exhaust noise of the expander 2.

Предлагаемое техническое решение позволит повысить эффективность шумотлушения и снизить металлоёмкость.The proposed technical solution will increase the efficiency of noise suppression and reduce metal consumption.

Claims

(54) AIR CONDITIONING 1. The invention is mining related and can be used for air conditioning in subterranean conditions. There is a known air conditioner that includes a housing with an installed expander in it, an expander exhaust pipe made with windows, a detandera exhaust silencer made in the form of a housing, coated with a sound-absorbing material, concentricly arranged in it with a sound absorbing material, and there is a place where the body, which has a body that has a body that has a body that has a body that has a body that is covered by a sound absorber, with a sound absorber located in it; connected to the exhaust pipe of the expander and the Cio silencer of the fan. The disadvantage of this air conditioner is the low efficiency of noise absorption, since the aerodynamic noise created by the fan is damped by the total suction side and is not damped by the pressure side. The closest in technical essence to the present invention is an air conditioner, including a housing with an expander installed in it, an exhaust exhaust pipe made with windows, an exhaust silencer for the exhaust air expander made in the form of a housing material that is muffled with a sounding material, and a coaxial exhaust noise muffler and coaxially located exhaust pipe perforated screw; spiral with a variable outer diameter, the inner cavity of which is filled with sound absorbing material G2. The disadvantage of the known device is the structural complexity caused by the need to perform special resonate chambers in the exhaust silencer of the expander, which leads to an increase in metal intensity and the mass of the sound. shitel and, as a result, the air conditioner in general. The aim of the invention is to increase the efficiency of sound attenuation and reduce metal consumption. The goal is achieved by the fact that the air conditioner, which includes a case with an expander placed in it, an exhaust expander pipe with windows, an exhaust expander noise silencer made in the form of a housing lined with sound-absorbing material, a fan silencer of the fan and a coaxially arranged exhaust pipe screwed a spiral with a variable outer diameter, the inner cavity of which is filled with sound-absorbing material, a screw perforated spiral is fixed on the exhaust pipe, while inside Rennes spiral cavity is connected with the exhaust windows rude. Thus, the internal volume of the helix is sent by the resonator chambers of the exhaust silencer of the expander, which eliminates the massive construction of the fairing. The drawing shows the air conditioner The air conditioner consists of the housing 1, the expander 2 with the fan noise 3, equipped with the fairing 5 with blades 6, silencer 7 noise 7 exhaust expander with body 8 and hollow screw perforated spiral 9 with variable outer diameter and pitch multiple. a quarter of the wavelength of the natural frequency of the oscillation of the fan, the internal cavity of which is filled with an airfoil 10, located on the exhaust pipe 11, in the walls of which are windows 12, with the internal cavity of the helix communicated with. Windows 12 exhaust pipe 11. Air conditioning works as follows. The compressed air from the pneumatic main enters the expander 2 installed in the housing 1 and drives the fan 3 to rotate, which creates a directional flow of the air jet. The sound waves of the air flow interact with the blades 6 attached to the fairing 5 silencer 4 fan noise and a semi-perforated spiral 9 with a variable outer diameter, the internal cavity of which is filled with a sound absorber 10 installed on the exhaust pipe 11 in the cortus 8 silencer 7 exhaust damper lose their energy in the sound absorber. Since the stfali 9 step is a multiple of a quarter of the wavelength of the natural oscillation frequency of the fan, the spuk wave of this frequency between the spiral turns is heard as in a quarter-wave resistor, which ensures the damping of the aerodynamic noise of the fan 3. is the exhaust expander. The sound waves at the exhaust, propagated through the exhaust pipe 11, reach the windows 12, which are made into its walls, fall into the hollow perforated spiral coil 9 with a variable external diameter, filled with the sound absorber 10, where they are muffled. Since the coils of coil 9 have a pascal diameter and, consequently, a volume, the efficiency of damping the exhaust expander noise increases as each coil connected to the exhaust pipe 11 through windows 12 essentially enters a quarter-wave resonator silencer tuned to a specific frequency. Thus, the screw floor perforated helix 9 muffles both the noise from the rotating fan 3 and the exhaust sound of the expander

2. The proposed solution will improve the efficiency of sound fada and reduce metal consumption. The invention includes an air conditioner that includes a case with an expander placed in it, an exhaust expander pipe with windows, an exhaust silencer for the expander, made in the form of a veneer lined with absorbing material for the case, a fan silencer for the fan, and a coaxially arranged exhaust pipe with a coaxially perforated spiral alternating external ventilation tube and a coaxially arranged exhaust pipe, a helical perforated spiral pattern with a variable outer air pipe and a coaxially arranged exhaust pipe, a helical perforated spiral pattern with a changeable outer side, and a coaxially arranged exhaust pipe with a variable helical perforated spiral pattern with external , the internal cavity of which is filled with sound-absorbing material, characterized in that, in order to increase the efficiency of sound attenuation and reduce metal consumption, ntova perforated spiral fastened on the exhaust pipe, wherein the spiral inner cavity communicates with the exhaust pipe windows. Sources of information taken into account in the examination 1. USSR author's certificate in application No. 21О2567, cl. E 21 P 3/00, 1975. 2, USSR Copyright Certificate No. 761714, cl. E 21 F C / PA, 1978 (prototype).

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