WO2017134220A1

WO2017134220A1 - A compressor with suction muffler

Info

Publication number: WO2017134220A1
Application number: PCT/EP2017/052374
Authority: WO
Inventors: Cengiz Kayahan OZLAV; Serkan Kara
Original assignee: Arcelik Anonim Sirketi
Priority date: 2016-02-05
Filing date: 2017-02-03
Publication date: 2017-08-10
Also published as: TR201601561A2

Abstract

The present invention relates to a compressor (1) comprising a motor (2) consisting of two main parts, a stator (3) and a rotor (4); a cylinder (5) providing the pumping of the refrigerant fluid; a cylinder head (6) that is disposed on the cylinder (5) and that provides the circulation of the refrigerant fluid at low and high pressure; a valve table (10) that provides the intake of the refrigerant fluid at low pressure to the cylinder (5) and provides the transmission of the refrigerant fluid at high pressure to the cylinder head (6); a suction muffler (7) that is produced from thermoplastic material, that enables the refrigerant fluid to reach the cylinder (5) without getting heated up and that minimizes the noise; a suction muffler head (8) that enables the suction muffler (7) to be mounted to the cylinder head (6), and a spring (9) that is disposed between the suction muffler (7) and the cylinder head (6).

Description

A COMPRESSOR WITH SUCTION MUFFLER

The present invention relates to a compressor comprising, used in cooling devices, comprising a suction muffler that minimizes the noise generated during the cycling of the refrigerant fluid in the refrigeration cycle and the connection thereof to the cylinder.

In compressors used in the cooling cycle in cooling devices, a suction muffler which provides coming of the cooling fluid used to provide cooling to the cylinder region without getting heated and suppression of the noise that may originate from the cooling fluid is used. The suction muffler is generally made of plastic material and disposed on the cylinder head or between the cylinder head and the valve table. Sucked cooling fluid passes through the suction muffler of which the part making up the suction manifold is disposed within the cylinder head before reaching the cylinder. During this process, the resulting noise must be tried to be minimized and at the same time thermodynamic efficiency improved. However, heat transfer occurs in the sections where the cylinder head and the suction muffler combine in such amount that may affect the thermodynamic cycle. In such applications, the cylinder head is manufactured as a single piece and some part of the cylinder head comes into contact with surfaces of the suction muffler that make up the chamber of it. It is observed, however, in the compressors that the suction muffler head becomes loose and move in the gap of the cylinder head over the time. This is caused by wearing of the pins on the suction muffler head during mounting or operation. As a result of this, the contact between the suction muffler head and the valve table is interrupted.

In the state of the art, it is known that a spring is used to prevent the contact between the suction muffler and the valve table. The movement of the said spring is limited by means of the housing arranged in the cylinder head and wherein the suction muffler is disposed. However, this limits the design of the spring and prevents the creation of a simple design.

In the state of the art United States patent documents no. US5613842 and US5207564, placement of a plate acting as spring on the side of the suction muffler head facing the cylinder head is disclosed.

In another embodiment of the state of the art an international patent application document no. WO9822712 and European patent application document no. EP1347174, placement of a plate acting as a spring on the side of the suction muffler head facing the cylinder head is disclosed.

The aim of the present invention is the realization of a compressor wherein a full contact is provided between the suction muffler and the valve table.

The compressor realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof comprises two holders that are oppositely disposed on the rear wall of the suction muffler and that provide the fixing of the component serving as a spring. The holders are mounted to the rear wall of the suction muffler and the spring pushing the suction muffler head towards the valve table can be easily disposed between the said holders. Thus, since the spring is fixed to the suction muffler by means of the said holders, the spring is enabled to be positioned independently from the cylinder head.

By means of the holders, the movement of the spring on the cylinder head is prevented and the unfavorable situations in the transmission of the force applied by means of the spring to the suction muffler towards the valve table are eliminated. Thereby, even if the pins joining the suction muffler head and the cylinder head are worn, full contact of the suction muffler with the valve table is provided.

The holders are L-formed. The holders are positioned parallel to each other in the vertical plane and the spring is positioned between the said holders.

Each holder comprises a first arm and a second arm with one end fixed to the first arm and the other end being free. By means of the second arm, the spring is prevented from being dislodged from between the holders.

In the preferred embodiment of the present invention, a very simple spring can be used by means of the said holders. The spring preferably in V or U form is fixed so that the edges thereof remain between the holders. Thus, the spring is prevented from moving left or right but can only stretch between the holders.

The holder is produced as a single piece from the same material as the suction muffler. Thus, savings both in labor and time are provided. Thus, the need for mounting an additional component during the assembly is eliminated and when the suction muffler is mounted to the cylinder head, the contact between the suction muffler and the valve table is automatically provided.

Sample embodiments related to the compressor realized in order to attain the aim of the present invention are shown in the attached figures where

Figure 1 – is the schematic view of the compressor of the present invention.

Figure 2 – is the front view of the suction muffler and the holders.

Figure 3 – is the perspective view of the suction muffler and the holders.

Figure 4 – is the perspective view of the suction muffler, the holders and the spring disposed between the holders.

The elements in the figures are numbered as follows:

Compressor
Motor
Stator
Rotor
Cylinder
Cylinder head
Suction muffler
Suction muffler head
Spring
Valve table
Holder
First arm
Second arm
Gap
Base
Wall
Extension

The compressor (1) comprises a motor (2) consisting of two main parts, a stator (3) and a rotor (4); a cylinder (5) providing the pumping of the refrigerant fluid; a cylinder head (6) that is disposed on the cylinder (5) and that provides the circulation of the refrigerant fluid at low and high pressure; a valve table (10) that provides the intake of the refrigerant fluid at low pressure to the cylinder (5) and provides the transmission of the refrigerant fluid at high pressure to the cylinder head (6); a suction muffler (7) that enables the refrigerant fluid to reach the cylinder (5) without getting heated up and that minimizes the noise; a suction muffler head (8) that enables the suction muffler (7) to be mounted to the cylinder head (6); a spring (9) that is disposed between the suction muffler (7) and the cylinder head (6), and at least one holder (11)

that extends from the suction muffler (7) towards the cylinder head (6) and
that fixes the spring (9) to the suction muffler (7)

(Figure 1 and Figure 2).

One end of the holder (11) is fixed to the suction muffler (7) while the other end thereof is free. By means of the holder (11), the spring (9) is fixed onto the suction muffler (7). Thus, the spring (9) is enabled to be properly and completely positioned on the suction muffler (7) independently from the cylinder head (6).

The holder (11) is disposed between the suction muffler (7) and the cylinder head (6), on the rear wall of the suction muffler (7) facing the cylinder head (6). In this case the spring (9) fixed to the suction muffler (7) by the holder (11) pushes the suction muffler head (9) towards the valve table (10). By means of the holder, the spring (9) is enabled to be fixed to the suction muffler (7) independently from the cylinder head (6). Thus, the suction muffler head (8) is prevented from creating a gap between the same and the cylinder head (6) after a certain time and from moving.

In an embodiment of the present invention, the holder (11) comprises a first arm (12) with one end connected to the suction muffler (7) and a second arm (13) with one end connected to the first arm (12) and the other end being free, the second arm (13) extending almost parallel to the suction muffler (7) and the cylinder head (6). The holders (11) are L-formed (Figure 3). In this embodiment, the two holders (11) are oppositely disposed in parallel to each other in the vertical direction. Thus, the spring (9) disposed between the holders (11) is prevented from moving left or right and in the horizontal axis. By means of the holders (11), the spring (9) is fixed to the suction muffler (7) independently from the cylinder head (6) and the compression force delivered from the cylinder head (6) is enabled to be homogeneously distributed in the suction muffler head (8) and the suction muffler head (8) is enabled to fully press onto the valve table (10). Moreover, by means of the present invention, a spring (9) with a simple design can be used.

A gap (14) is provided between the suction muffler (7) and the holder (11) fixed to the rear wall of the same. The spring (9) is fitted into the said gaps (14) arranged in the oppositely-disposed holders (11).

In the preferred embodiment of the present invention, the spring (9) is in form of V or U, and comprises a base (15), two walls (16) extending sideways from two edges of the said base (15) and two extensions (17) that enter the gaps (14) under the second arm (13). The spring (9) is fixed to the suction muffler (7) so that the extensions (17) enter between the holders (11) and the walls (16) are squeezed between the holders (11). In this case the spring (9) stretches between the holders (11) but is not dislodged from between the holders (11) (Figure 4).

The holder (11) is produced from the same material as the suction muffler (7). The suction muffler (7) is preferably produced from thermoplastic material. Moreover, the holder (11) is produced as a single piece with the suction muffler (7). Thus, the need for using an additional component is eliminated.

Claims

A compressor (1) comprising a motor (2) consisting of two main parts, a stator (3) and a rotor (4); a cylinder (5) providing the pumping of the refrigerant fluid; a cylinder head (6) that is disposed on the cylinder (5) and that provides the circulation of the refrigerant fluid at low and high pressure; a valve table (10) that provides the intake of the refrigerant fluid at low pressure to the cylinder (5) and provides the transmission of the refrigerant fluid at high pressure to the cylinder head (6); a suction muffler (7) that enables the refrigerant fluid to reach the cylinder (5) without getting heated up and that minimizes the noise; a suction muffler head (8) that enables the suction muffler (7) to be mounted to the cylinder head (6); a spring (9) that is disposed between the suction muffler (7) and the cylinder head (6), characterized by at least one holder (11)

- that extends from the suction muffler (7) towards the cylinder head (6) and

- that fixes the spring (9) to the suction muffler (7).
A compressor (1) as in Claim 1, characterized by the holder (11) with one end connected to the suction muffler (7) and the other end being free.
A compressor (1) as in Claim 1, characterized by the holder (11) that is disposed between the suction muffler (7) and the cylinder head (6), on the rear wall of the suction muffler (7) facing the cylinder head (6).
A compressor (1) as in any one of the Claims 1 to 3, characterized by the holder (11) having a first arm (12) with one end connected to the suction muffler (7) and a second arm (13) with one end connected to the first arm (12) and the other end being free, the second arm (13) extending almost parallel to the suction muffler (7) and the cylinder head (6).
A compressor (1) as in Claim 4, characterized by the holder (11) that is in form of L.
A compressor (1) as in Claim 1, characterized by two holders (11) that are oppositely disposed parallel to each other in the vertical direction.
A compressor (1) as in Claim 1, characterized by the holder (11) that is fixed to the rear wall of the suction muffler (7) and that creates a gap (14) between the holder (11) and the suction muffler (7).
A compressor (1) as in Claim 1, characterized by the holder (11) that is produced from the same material as the suction muffler (7).
A compressor (1) as in Claim 1, characterized by the holder (11) that is produced as a single piece with the suction muffler (7).
A compressor (1) as in Claim 1, characterized by the spring (9) comprising a base (15), two walls (16) extending sideways from two edges of the said base (15) and two extensions (17) that enter the gaps (14) under the second arm (13).
A compressor (1) as in Claim 10, characterized by the spring (9) that is in form of V.
A compressor (1) as in Claim 10, characterized by the spring (9) that is in form of U.