KR20200033516A - Sound absorbing and sound blocking material for clothes dryer compressor or air conditioner compressor and manufacturing method for the same - Google Patents

Abstract

The present invention relates to a sound absorbing and insulating material for a cloth dryer compressor or an air conditioner compressor and a manufacturing method thereof. The sound absorbing and insulating material for a cloth dryer compressor or an air conditioner compressor can effectively block noise and vibration of the cloth dryer compressor or the air conditioner compressor as a sound-absorbing layer comprising synthetic rubber and a sound-absorbing layer comprising a non-woven fabric are stacked. In addition, since the installation is completed by simply placing the sound absorbing and insulating material on the outer surface of the cloth dryer compressor or the air conditioner compressor and attaching the same by applying heat thereto, safety can be secured by omitting a process that is dangerous to a worker, and simplification of the process can be realized, thereby reducing working time.

Description

Sound absorbing and sound blocking material for clothes dryer compressor or air conditioner compressor and manufacturing method for the same}

The present invention relates to a sound absorbing and insulating material for a clothes dryer compressor or an air conditioner compressor and a method for manufacturing the same.

Household appliances including compressors, such as clothes dryers and air conditioners, generate vibrations and noises when the compressor compresses and circulates refrigerant during operation. Since the home appliance is used inside the home, a device for suppressing such vibration or noise is essential, and for this purpose, a sound absorbing and insulating material is installed on the outside of the compressor in the process of manufacturing a clothes dryer or air conditioner.

In the existing sound absorbing and insulating material installation, an asphalt sheet or an ethylene-vinyl acetate copolymer (EVA) sheet is placed on the outer surface of a clothes dryer compressor or air conditioner compressor, and heat is applied to the clothes dryer compressor or air conditioner compressor using a hot air fan. It is made by attaching a non-woven fabric having sound-absorbing properties after making the asphalt sheet or the EVA sheet adhesive.

In the process of attaching the nonwoven fabric, the nonwoven fabric must be firmly attached to the curved portion of the compressor, and the operator must press the nonwoven fabric by hand. The temperature of the outer surface of the clothes dryer compressor or air conditioner compressor that has passed through the hot air fan is at least 150 ° C or higher, and the asphalt sheet or EVA sheet loses adhesion when the temperature decreases, so work must be performed immediately after passing through the hot air fan. In this process, there is a problem that the operator is placed at risk of burns.

Therefore, development of a sound absorbing and insulating material that is easy to install while having excellent sound insulation and sound absorption characteristics is required.

Republic of Korea Registered Patent No. 10-0638937

An object of the present invention is to provide a sound absorbing and insulating material for a compressor of a clothes dryer or air conditioner according to various embodiments of the present invention.

Another object of the present invention is to provide a method for manufacturing a sound absorbing and insulating material for a compressor of a clothes dryer or air conditioner according to various embodiments of the present invention.

Another object of the present invention is to provide a clothes dryer or air conditioner comprising a sound absorbing and insulating material for a compressor of a clothes dryer or air conditioner according to various embodiments of the present invention.

One aspect of the present invention for achieving the above object is a sound insulating layer comprising a synthetic rubber; And a sound absorbing and insulating material for a laundry dryer compressor or an air conditioner compressor in which a sound absorbing layer including a nonwoven fabric is stacked.

Another aspect of the present invention to prepare a synthetic rubber dough by stirring 80 to 95 parts by weight of butadiene rubber, 2 to 20 parts by weight of butyl rubber and 1 to 10 parts by weight of natural rubber ; Forming a sound insulating layer sheet with the synthetic rubber dough; And it relates to a method for producing a sound absorbing and insulating material for a laundry dryer compressor or an air conditioner compressor comprising the step of attaching the sound absorbing layer sheet including the sound insulating layer sheet and the nonwoven fabric through a calender roll preheated to a temperature of 130 to 170 ° C.

Another aspect of the present invention to prepare a synthetic rubber dough by stirring 80 to 95 parts by weight of butadiene rubber, 2 to 20 parts by weight of butyl rubber and 1 to 10 parts by weight of natural rubber step; Forming a sound insulating layer sheet with the synthetic rubber dough; Preparing a sound absorbing and insulating material for a laundry dryer compressor or an air conditioner compressor by attaching the sound absorbing layer sheet including the sound insulating layer sheet and the nonwoven fabric through a calender roll preheated to a temperature of 130 to 170 ° C; And positioning the soundproof layer of the sound absorbing and insulating material for the clothes dryer compressor or the air conditioner compressor to be in contact with the outer surface of the clothes dryer compressor or air conditioner and heat-sealing at a temperature of 100 to 120 ° C for 2 to 10 minutes. It relates to a method of manufacturing a compressor or air conditioning compressor.

Another aspect of the present invention relates to a clothes dryer or air conditioner comprising a sound absorbing and insulating material for a clothes dryer compressor or an air conditioner compressor manufactured by the above method.

The sound absorbing and insulating material for a clothes dryer compressor or an air conditioner compressor of the present invention can effectively block noise and vibration of a clothes dryer compressor or an air conditioner compressor by stacking a sound absorbing layer including synthetic rubber and a sound absorbing layer including a nonwoven fabric. In addition, since the installation is completed by simply placing the sound absorbing and insulating material on the outer surface of the clothes dryer compressor or the air conditioner compressor and attaching it by heating, safety can be secured by omitting a process that is dangerous to the worker, and simplification of the process reduces the working time. It has the effect of shortening.

1 is a conceptual diagram of a sound absorbing and insulating material for a clothes dryer compressor or an air conditioner compressor according to an embodiment of the present invention.
2 is a conceptual diagram showing a method of manufacturing a sound absorbing and insulating material for a laundry dryer compressor or an air conditioner compressor according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail.

One aspect of the present invention is a sound insulating layer comprising a synthetic rubber; And it provides a sound absorbing and insulating material for a laundry dryer compressor or air conditioner compressor is laminated a sound absorbing layer comprising a non-woven fabric.

In the sound absorbing and insulating material of the present invention, a sound insulating layer containing the synthetic rubber and a sound absorbing layer containing the nonwoven fabric are laminated to form an integral body. After placing the sound insulating layer comprising the synthetic rubber of the sound absorbing and insulating material in contact with the outer surface of a laundry dryer compressor or an air conditioner compressor without an external panel, pass the compressor through a hot air fan so that the sound insulating layer containing the synthetic rubber has adhesive properties. Therefore, since the attachment of the sound absorbing and insulating material is completed, the process of manually attaching the nonwoven fabric to the high-temperature outer surface can be omitted. Therefore, it is possible to secure the safety of the work and to shorten the working time significantly. The sound absorbing and insulating material may be used without limitation if it is a household appliance generating noise as well as a laundry dryer compressor and an air conditioner compressor.

In addition, the sound-absorbing layer comprising the synthetic rubber and the sound-absorbing layer comprising the non-woven fabric are integrally combined to suppress vibration of the clothes dryer compressor or air conditioner compressor, and at the same time, to absorb and prevent noise and effectively reduce noise.

1 is a conceptual diagram of a sound absorbing and insulating material for a laundry dryer compressor or an air conditioner compressor according to an embodiment of the present invention.

According to one embodiment of the present invention, the synthetic rubber comprises 80 to 95 parts by weight of butadiene rubber, 2 to 20 parts by weight of butyl rubber and 1 to 10 parts by weight of natural rubber You can.

In general, rubber has inherent elasticity, cushioning, resilience, flexibility, and heat resistance, and has high-frequency vibration blocking characteristics due to the resistance of the rubber itself to internal friction. The synthetic rubber has butadiene rubber as its main component, and may not only remove vibrations generated by a laundry dryer compressor or an air conditioner compressor, but also may serve to block noise.

The butadiene rubber, which is the main component of the synthetic rubber, has the characteristics of good abrasion resistance and low heat generation, but has the disadvantage of poor processability and elasticity. When the butyl rubber and natural rubber are added according to the above-described range, processability, elasticity, as well as flexibility and waterproofness are improved, making it suitable for catching vibration and blocking noise of a laundry dryer compressor or air conditioner compressor.

 Meanwhile, the synthetic rubber may be adhered to the sound absorbing layer and the clothes dryer compressor or the air conditioner compressor by applying heat to the sound insulating layer by using the property having the adhesive property at a temperature above the melting point. The synthetic rubber produced by mixing according to the range of the substrate has strong adhesiveness at high temperature, and exhibits improved adhesion to the curved side of the clothes dryer compressor or air conditioner compressor due to its flexible properties.

According to another embodiment of the present invention, the thickness of the sound insulating layer is 1 to 5 mm, the melting point may be 130 to 170 ℃.

If the thickness is less than the range, the adhesion of the sound insulation layer may be insufficient, and there may be a problem of melting when heat-pressed to adhere to the outer surface of the clothes dryer compressor or air conditioner compressor. When the layer is subjected to force, it may be easily broken, which is undesirable.

As described above, the sound insulating layer containing synthetic rubber has a property of exhibiting adhesiveness when heat is applied. When the butadiene rubber, butyl rubber and natural rubber are mixed in the above-described range ratio, the processability is remarkably improved by having a relatively constant melting point. This property can be used to heat-bond the sound insulating layer and the sound absorbing layer, and can also be used in the process of installing the sound absorbing and insulating material in a laundry dryer compressor or an air conditioner compressor in the future.

According to another embodiment of the present invention, the thickness of the sound absorbing layer is 5 to 20 mm, and the weight per unit area may be 600 to 1000 g / m 2.

The sound absorbing layer includes a nonwoven fabric, and when sound waves are incident on a fibrous porous medium such as a nonwoven fabric, air molecules in the internal pores vibrate due to sound pressure. This vibration is converted into heat due to a series of phenomena such as vibration of the fiber structure, heat flow from the air to the fiber, and viscous resistance at the boundary of the pores or the surface of the fiber. The same sound absorbing material makes the noise-reducing properties appear.

Therefore, the sound absorption properties of the nonwoven fabric are determined by factors such as the thickness and specific surface area of the fiber, the thickness of the nonwoven fabric, density, and surface treatment. In general, when the specific surface area that can come into contact with sound waves inside the fiber structure increases, the efficiency of viscous loss of sound waves increases, so that sound absorption performance is improved. In addition, if the thickness of the nonwoven fabric is increased, the low-frequency band sound absorption rate is improved, and when the density is increased, the high-frequency band sound absorption rate is improved.

The non-woven fabric included in the sound-absorbing layer can be widely used non-woven fabric having sound-absorbing properties known in the art, and the thickness and weight can also be appropriately selected according to the noise characteristics of the clothes dryer compressor or air conditioner compressor used.

However, if it is less than the above range, it may be difficult to achieve a desired sound absorption force, and if it exceeds the above range, it may be difficult to install in a laundry dryer compressor or air conditioner compressor due to an excessively thick thickness, and a large amount of nonwoven fabric should be used. So it is not economical.

Another aspect of the present invention to prepare a synthetic rubber dough by stirring 80 to 95 parts by weight of butadiene rubber, 2 to 20 parts by weight of butyl rubber and 1 to 10 parts by weight of natural rubber ; Forming a sound insulating layer sheet with the synthetic rubber dough; And it provides a method for producing a sound absorbing and insulating material for a laundry dryer compressor or an air conditioner compressor comprising the step of attaching the sound absorbing layer sheet including the sound insulating layer sheet and the nonwoven fabric through a calender roll preheated to a temperature of 130 to 170 ° C.

According to one embodiment of the present invention, the step of forming the sound insulation layer sheet may be formed by passing a calender roll preheated to a temperature of 130 to 170 ° C.

The calendering process is a process of forming a film, sheet, or the like using a calender, that is, a rolling machine in which several heating rolls are arranged. The calendering process is one of the representative methods for making films, sheets, etc. because it has a faster production speed and a thinner thickness than the extrusion process.

A calendering process in which the synthetic rubber dough is applied to the sound absorbing layer sheet containing the nonwoven fabric at a constant thickness in the manufacturing method and can be adhered using heat of a calender roll at the same time may be suitable. The step of pressing the coated synthetic rubber dough with the calender roll may be performed using a calendering device known in the art, and is not particularly limited.

According to another embodiment of the present invention, the thickness of the sound insulating layer is 1 to 5 mm, the melting point may be 130 to 170 ℃.

According to another embodiment of the present invention, the thickness of the sound absorbing layer sheet is 5 to 20 mm, and the weight per unit area may be 600 to 1000 g / m 2.

2 is a view showing a conceptual diagram of a method for manufacturing a sound absorbing and insulating material for a laundry dryer compressor or an air conditioner compressor according to an embodiment of the present invention. The manufacturing method according to FIG. 2 is configured as follows.

First, a synthetic rubber dough is prepared and supplied to the hopper 100, and then the synthetic rubber dough is passed between calender rolls to form a sound insulating layer sheet 10. In this process, the calender roll 200 in contact with the synthetic rubber dough may be preheated to a temperature of 130 to 170 ° C. If the temperature is less than the above range, the moldability of the synthetic rubber dough may be deteriorated, and if it exceeds the above range, there is a risk of burning the synthetic rubber dough, which is not preferable.

Subsequently, the sound absorbing layer sheet 20 including the non-woven fabric is supplied using a calender roll 200 and passed through the calender roll 200 together with the sound insulating layer sheet 10 so that the sound absorbing layer sheet 20 and the sound insulating layer are passed. The sheet 10 is attached to complete the sound absorbing and insulating material. Here, the temperature of the calender roll 200 may also be 130 to 170 ° C. If the range is less than the above range, the sound insulation layer sheet including synthetic rubber may not have sufficient adhesive strength, and when it exceeds the range, the sound insulation layer sheet There is a danger of burning.

Another aspect of the present invention to prepare a synthetic rubber dough by stirring 80 to 95 parts by weight of butadiene rubber, 2 to 20 parts by weight of butyl rubber and 1 to 10 parts by weight of natural rubber step; Forming a sound insulating layer sheet with the synthetic rubber dough; Preparing a sound absorbing and insulating material for a laundry dryer compressor or an air conditioner compressor by attaching the sound absorbing layer sheet including the sound insulating layer sheet and the nonwoven fabric through a calender roll preheated to a temperature of 130 to 170 ° C; And positioning the soundproof layer of the sound absorbing and insulating material for the clothes dryer compressor or the air conditioner compressor to be in contact with the outer surface of the clothes dryer compressor or air conditioner and heat-sealing at a temperature of 100 to 120 ° C for 2 to 10 minutes. Provided is a method of manufacturing a compressor or air conditioner compressor.

As described above, the sound absorbing and insulating material for the laundry dryer compressor or the air conditioner compressor of the present invention is completed by simply applying heat to the sound absorbing and insulating material, so a cumbersome process can be omitted to shorten the working time and ensure safety of work. have.

On the other hand, the method of attaching the sound absorbing and insulating material to the outer surface of the clothes dryer compressor or air conditioner compressor is not limited to the above-described heat compression, but can be made by various methods known in the art. For example, after installing the Velcro on both ends of the sound absorbing and insulating material surrounding the compressor, the sound absorbing and insulating material may wrap around the outer surface, and then both ends may be attached by the Velcro. You can also do it by way of

Another aspect of the present invention provides a clothes dryer or air conditioner comprising a sound absorbing and insulating material for a clothes dryer compressor or an air conditioner compressor manufactured by the above manufacturing method.

10: sound insulation layer
20: sound absorbing layer
100: hopper
200: calendar roll

Claims (10)

Sound insulating layer comprising a synthetic rubber; And
A sound absorbing and insulating material for a laundry dryer compressor or air conditioner compressor in which a sound absorbing layer including a nonwoven fabric is laminated. The laundry dryer compressor according to claim 1, wherein the synthetic rubber comprises 80 to 95 parts by weight of butadiene rubber, 2 to 20 parts by weight of butyl rubber, and 1 to 10 parts by weight of natural rubber. Or sound absorbing and insulating material for air conditioning compressors. The sound absorbing and insulating material for a laundry dryer compressor or an air conditioner compressor according to claim 1, wherein the sound insulation layer has a thickness of 1 to 5 mm and a melting point of 130 to 170 ° C. The thickness of the sound absorbing layer is 5 to 20 mm, and the weight per unit area is 600 to 1000 g / m 2. Preparing a synthetic rubber dough by stirring 80 to 95 parts by weight of butadiene rubber, 2 to 20 parts by weight of butyl rubber and 1 to 10 parts by weight of natural rubber;
Forming a sound insulating layer sheet with the synthetic rubber dough; And
A method of manufacturing a sound absorbing and insulating material for a laundry dryer compressor or an air conditioner compressor, comprising passing the sound absorbing layer sheet including the sound insulating layer sheet and the nonwoven fabric through a calender roll preheated to a temperature of 130 to 170 ° C. The method for manufacturing the sound absorbing and insulating material for a laundry dryer compressor or an air conditioner compressor according to claim 5, wherein the forming of the sound insulation layer sheet is performed by passing a calender roll preheated to a temperature of 130 to 170 ° C. The method of claim 5, wherein the sound insulation layer has a thickness of 1 to 5 mm and a melting point of 130 to 170 ° C. The method of claim 5, wherein the thickness of the sound absorbing layer sheet is 5 to 20 mm, and the weight per unit area is 600 to 1000 g / m 2. Preparing a synthetic rubber dough by stirring 80 to 95 parts by weight of butadiene rubber, 2 to 20 parts by weight of butyl rubber and 1 to 10 parts by weight of natural rubber;
Forming a sound insulating layer sheet with the synthetic rubber dough;
Preparing a sound absorbing and insulating material for a laundry dryer compressor or an air conditioner compressor by attaching the sound absorbing layer sheet including the sound insulating layer sheet and the nonwoven fabric through a calender roll preheated to a temperature of 130 to 170 ° C; And
Positioning the outer surface of the clothes dryer compressor or air conditioner compressor and the sound insulating layer of the sound absorbing and insulating material for the clothes dryer compressor or air conditioner compressor, and heat-sealing at a temperature of 100 to 120 ° C for 2 to 10 minutes; Or a method of manufacturing an air conditioner compressor. A clothes dryer or air conditioner comprising a sound absorbing and insulating material for a clothes dryer compressor or an air conditioner compressor manufactured by claims 5 to 8.

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