Noise reduction device for air source heat pump unit

Abstract

The noise reduction device for the air source heat pump unit comprises an air outlet pipe and a connecting cover, the connecting cover is arranged in the air outlet pipe, four sets of L-shaped buckles are arranged on the inner wall of the air outlet pipe at equal intervals, four sets of limiting buckles are installed on the outer wall of the connecting cover at equal intervals, and the limiting buckles are in sliding connection with the L-shaped buckles. Locking pins are symmetrically installed on the outer wall of the air outlet pipe and penetrate through the air outlet pipe, inserting holes are formed in the positions, on one sides of the locking pins, of the side wall of the connecting cover, the locking pins can be inserted into the inserting holes, multiple sets of A external threads are arranged on the side, away from the air outlet pipe, of the connecting cover at equal intervals, and silencing cylinders are arranged on the surfaces of the A external threads. And B internal threads are arranged on the inner walls of the silencing cylinders. According to the utility model, convenient multi-position noise elimination and noise reduction are realized, the device can be conveniently and quickly disassembled and assembled, and the disassembly and assembly convenience and the noise reduction effect of the device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of noise reduction device, concretely to a kind of for air source heat pump unit's noise reduction device. BACKGROUND

[0002] Air source heat pump is a kind of high energy makes heat flow from low heat source (such as air) to high heat source energy-saving device. It absorbs heat from the surrounding air by consuming a small amount of electric energy, and transfers it to the medium (such as water or air) that needs to be heated, so as to realize the function of heating, refrigeration or hot water, the existing air source heat pump unit, due to the existence of noise, air source heat pump unit needs to be assisted noise reduction treatment, traditional noise reduction mode is mostly attached to sound insulation cotton or use sound insulation cover, its noise reduction mode is single, effect is poor, in order to improve the situation, so a kind of for air source heat pump unit's noise reduction device is presented.

[0003] As disclosed in the authorized announcement No. CN222317255U, a kind of for air source heat pump unit's noise reduction device, including unit body, unit body is arranged with condenser, unit body top is symmetrically provided with the air duct with heat dissipation fan, unit body top is installed with heat dissipation wind tube, heat dissipation wind tube is internally provided with air guide cavity, air guide cavity's middle section is installed with air-permeable mesh plate, the inner side of heat dissipation wind tube is installed with noise reduction plate between corresponding two air-permeable mesh plates, air guide cavity is provided with air outlet at one end, heat dissipation wind tube is installed with low-frequency sound-absorbing cotton corresponding air outlet, low-frequency sound-absorbing cotton is provided with several;

[0004] It realizes effective dispersion through air-permeable mesh plate and preliminary noise reduction treatment of airflow through the set noise reduction plate, and low-frequency noise reduction treatment of noise in airflow through low-frequency sound-absorbing cotton.

[0005] But it does not solve the problem that the existing noise reduction device is not convenient for multi-position noise reduction when in use, and is not conducive to the quick disassembly and assembly of the device, affecting the convenience of disassembly and assembly and the noise reduction effect of the device. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a kind of for air source heat pump unit's noise reduction device to solve the problem that the noise reduction device is not convenient for multi-position noise reduction in the above background technology, and is not conducive to the quick disassembly and assembly of the device, affecting the convenience of disassembly and assembly and the noise reduction effect of the device.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: A kind of noise reduction device for air source heat pump unit, including air outlet pipe and connecting cover, the inside of air outlet pipe is provided with connecting cover, the inner wall of air outlet pipe is provided with four groups of L type buckles of equal interval, the outer wall of connecting cover is installed four groups of limiting buckles of equal interval, and limiting buckle and L type buckle slidingly connect, the outer wall of air outlet pipe is symmetrically installed locking pin, and locking pin penetrates air outlet pipe, the side wall of connecting cover of locking pin side is all provided with jack, and locking pin can be inserted into the inside of jack, the side of connecting cover away from air outlet pipe is provided with multiple groups of A outer thread of equal interval.

[0008] Preferably, the surface of the A outer thread is provided with a sound attenuation cylinder, the inner wall of the sound attenuation cylinder is provided with a B inner thread, and the B inner thread is threadedly connected with the A outer thread.

[0009] Preferably, the inside of the sound attenuation cylinder is provided with multiple groups of sound attenuation bowls of equal interval, and the sound attenuation bowls are fixedly connected with the sound attenuation cylinder.

[0010] Preferably, the outer wall of the sound attenuation cylinder is provided with a B outer thread, and the outer surface of the sound attenuation cylinder is provided with a protective cap.

[0011] Preferably, the inner wall of the protective cap is provided with an A inner thread, and the A inner thread is threadedly connected with the B outer thread.

[0012] Compared with the prior art, the utility model has the beneficial effects that: the noise reduction device not only realizes convenient multi-position sound attenuation and noise reduction, facilitates quick disassembly and assembly of the device, but also improves the convenience of disassembly and assembly of the device and the noise reduction effect.

[0013] (1) the protective cap is sleeved on the surface of the muffler barrel, the protective cap is installed on the surface of the muffler barrel under the threaded connection of the A outer thread and the B inner thread by rotating the protective cap, the muffler barrel is inserted on the surface of the A outer thread, the muffler barrel is installed on the surface of the A outer thread under the threaded connection of the A outer thread and the B inner thread by rotating the muffler barrel, the limiting buckle is inserted into the inside of the L-shaped buckle, the limiting buckle is clamped in the inside of the L-shaped buckle by rotating the connecting cover and driving the limiting buckle to rotate in the inside of the L-shaped buckle when the limiting buckle moves to the turning position of the L-shaped buckle, the connecting cover is fixed in the inside of the air outlet pipe by inserting the locking pin into the inside of the insertion hole, the air discharged from the air source heat pump unit is discharged from the air outlet pipe, the airflow is discharged into the inside of the muffler barrel through the air outlet pipe and the A outer thread, the noise brought by the airflow is muffled under the action of a plurality of muffling bowls in the inside of the muffler barrel, wherein the working principle of the muffling bowl is that the noise is reduced by reflecting and interfering sound waves in the propagation process through structures such as pipe section mutation or expansion chamber, so as to reduce the noise of the air source heat pump unit, the device adopts threaded and buckling connection, convenient to disassemble, replace and maintain, realizes convenient multi-position muffling and noise reduction, facilitates rapid disassembly and assembly of the device, and improves the convenience of disassembly and assembly of the device and the noise reduction effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0015] Figure 2 It is a three-dimensional explosion structure schematic diagram of the utility model;

[0016] Figure 3 It is a three-dimensional structure schematic diagram of the air outlet pipe and the connecting cover of the utility model;

[0017] Figure 4 It is a three-dimensional perspective structure schematic diagram of the muffler barrel of the utility model;

[0018] Figure 5 It is a side view sectional structure schematic diagram of the muffler barrel of the utility model.

[0019] In the drawing: 1, air outlet pipe; 2, muffler barrel; 3, protective cap; 4, locking pin; 5, connecting cover; 6, A outer thread; 7, muffling bowl; 8, B outer thread; 9, L-shaped buckle; 10, A inner thread; 11, B inner thread; 12, insertion hole; 13, limiting buckle. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] Please refer to Figures 1-5 The utility model provides an embodiment: a kind of noise reduction device for air source heat pump unit, including air outlet pipe 1 and connecting cover 5, the inside of air outlet pipe 1 is provided with connecting cover 5, and the inner wall of air outlet pipe 1 is provided with four groups of L type buckles 9 of equal interval, four groups of limiting buckles 13 of equal interval are installed on the outer wall of connecting cover 5, and limiting buckle 13 is slidably connected with L type buckle 9, and the outer wall of air outlet pipe 1 is symmetrically installed with locking pin 4, and locking pin 4 passes through air outlet pipe 1, and the side wall of connecting cover 5 on the side of locking pin 4 is all provided with jack 12, and locking pin 4 can be inserted into the inside of jack 12, and the side of connecting cover 5 away from air outlet pipe 1 is provided with multiple groups of A outer thread 6 of equal interval;

[0022] The surface of A outer thread 6 is all provided with sound attenuation cylinder 2, the inner wall of sound attenuation cylinder 2 is all provided with B inner thread 11, and B inner thread 11 is threadedly connected with A outer thread 6;

[0023] The inside of sound attenuation cylinder 2 is all provided with multiple groups of sound attenuation bowl 7 of equal interval, and sound attenuation bowl 7 is fixedly connected with sound attenuation cylinder 2, the outer wall of sound attenuation cylinder 2 is all provided with B outer thread 8, the outer surface of sound attenuation cylinder 2 is all provided with protective cap 3, the inner wall of protective cap 3 is all provided with A inner thread 10, and A inner thread 10 is threadedly connected with B outer thread 8;

[0024] The protective cap 3 is sleeved on the surface of the muffler cylinder 2, the protective cap 3 is installed on the surface of the muffler cylinder 2 under the threaded connection of the A inner thread 10 and the B outer thread 8 by rotating the protective cap 3, the muffler bowl 7 inside the muffler cylinder 2 is protected by the protective cap 3, then the muffler cylinder 2 is inserted on the surface of the A outer thread 6, the muffler cylinder 2 is installed on the surface of the A outer thread 6 under the threaded connection of the A outer thread 6 and the B inner thread 11 by rotating the muffler cylinder 2, then the limiting buckle 13 is inserted into the inside of the L-shaped buckle 9, the limiting buckle 13 is clamped in the inside of the L-shaped buckle 9 by rotating the connecting cover 5 to drive the limiting buckle 13 to rotate in the inside of the L-shaped buckle 9 when the limiting buckle 13 moves to the turning position of the L-shaped buckle 9, then the locking pin 4 is inserted into the inside of the insertion hole 12 through the air outlet pipe 1 to fix the connecting cover 5 in the inside of the air outlet pipe 1, the air discharged by the air source heat pump unit is discharged from the air outlet pipe 1, the airflow is discharged into the inside of the muffler cylinder 2 through the air outlet pipe 1 and the A outer thread 6, the noise brought by the airflow is silenced under the action of multiple groups of muffler bowls 7 in the inside of the muffler cylinder 2, wherein the working principle of the muffler bowl 7 is that the noise is reduced by the reflection and interference of sound waves in the transmission process through the structure of pipe section mutation or expansion chamber, so as to reduce the noise of the air source heat pump unit, the device adopts threaded and buckle connection, which is convenient to disassemble, replace and maintain, realizes convenient multi-position muffling and noise reduction, facilitates the quick disassembly and assembly of the device, and improves the convenience of disassembly and assembly of the device and the noise reduction effect.

[0025] Working principle: the protective cap 3 is sleeved on the surface of the muffler 2, the protective cap 3 is installed on the surface of the muffler 2 under the threaded connection of the A inner thread 10 and the B outer thread 8, the muffler 2 is inserted on the surface of the A outer thread 6, the muffler 2 is installed on the surface of the A outer thread 6 under the threaded connection of the A outer thread 6 and the B inner thread 11, the limiting buckle 13 is inserted into the inside of the L-shaped buckle 9, the limiting buckle 13 is clamped in the inside of the L-shaped buckle 9 by rotating the connecting cover 5, the connecting cover 5 drives the limiting buckle 13 to rotate in the inside of the L-shaped buckle 9, the locking pin 4 is inserted into the inside of the insertion hole 12 through the air outlet pipe 1, the connecting cover 5 is fixed in the inside of the air outlet pipe 1, the air discharged by the air source heat pump unit is discharged from the air outlet pipe 1, the airflow is discharged into the inside of the muffler 2 through the air outlet pipe 1 and the A outer thread 6, the noise brought by the airflow is eliminated under the action of multiple groups of muffling bowls 7 in the inside of the muffler 2, the working principle of the muffling bowl 7 is that the reflection and interference principle of sound wave is used, the sound wave is reflected and interfered in the propagation process through the structure of pipe section mutation or expansion chamber, so as to reduce the noise, thereby the air source heat pump unit is reduced in noise, the device adopts threaded and buckle connection, is convenient to disassemble and replace and maintain, realizes convenient multi-position muffling and noise reduction, facilitates the quick disassembly and assembly of the device, improves the convenience of disassembly and assembly of the device and the effect of noise reduction.

Claims

1. A noise reduction device for an air source heat pump unit, comprising an air outlet pipe (1) and a connecting cover (5), characterized in that: The inside of the air outlet pipe (1) is provided with a connecting cover (5), the inner wall of the air outlet pipe (1) is provided with four groups of L-shaped buckles (9) at equal intervals, the outer wall of the connecting cover (5) is installed with four groups of limiting buckles (13) at equal intervals, the limiting buckles (13) and the L-shaped buckles (9) are in sliding connection, the outer wall of the air outlet pipe (1) is symmetrically installed with locking pins (4), the locking pins (4) penetrate through the air outlet pipe (1), the side wall of the connecting cover (5) on one side of the locking pin (4) is provided with a jack (12), and the locking pin (4) can be inserted into the inside of the jack (12), and the side of the connecting cover (5) away from the air outlet pipe (1) is provided with a plurality of groups of A external threads (6) at equal intervals.

2. The noise reduction device for an air source heat pump unit according to claim 1, characterized in that: The surface of the A external thread (6) is provided with a sound reduction cylinder (2), the inner wall of the sound reduction cylinder (2) is provided with a B internal thread (11), and the B internal thread (11) is in threaded connection with the A external thread (6).

3. The noise reduction device for an air source heat pump unit according to claim 2, characterized in that: The inside of the sound reduction cylinder (2) is provided with a plurality of groups of sound reduction bowls (7) at equal intervals, and the sound reduction bowls (7) and the sound reduction cylinder (2) are fixedly connected.

4. The noise reduction device for an air source heat pump unit according to claim 2, characterized in that: The outer wall of the sound reduction cylinder (2) is provided with a B external thread (8), and the outer surface of the sound reduction cylinder (2) is provided with a protective cap (3).

5. The noise reduction device for an air source heat pump unit according to claim 4, characterized in that: The inner wall of the protective cap (3) is provided with an A internal thread (10), and the A internal thread (10) is in threaded connection with the B external thread (8).

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