초록 ▼

A separation chamber type anti-surge valve may include a valve body formed with a charge air passage inlet and a charge air passage outlet, and a valve cover coupled to the valve body by a fastening member to define an empty inner space between the valve body and the valve cover, in which the inner

A separation chamber type anti-surge valve may include a valve body formed with a charge air passage inlet and a charge air passage outlet, and a valve cover coupled to the valve body by a fastening member to define an empty inner space between the valve body and the valve cover, in which the inner space is divided into a diaphragm chamber and a bypass chamber by a valve guide, one side tip of a valve rod being fixed in the diaphragm chamber, a valve disc fixed to another side tip of the valve rod, and the diaphragm chamber is divided into a control pressure chamber and a normal static pressure chamber.

대표청구항 ▼

1. A separation chamber type anti-surge valve comprising: a valve body formed with a charge air passage inlet through which charge air defined by compression of air is introduced and a charge air passage outlet through which the charge air is discharged, and a valve cover coupled to the valve body b

1. A separation chamber type anti-surge valve comprising: a valve body formed with a charge air passage inlet through which charge air defined by compression of air is introduced and a charge air passage outlet through which the charge air is discharged, and a valve cover coupled to the valve body by a fastener to define an empty inner space between the valve body and the valve cover, wherein:the inner space is divided into a diaphragm chamber and a bypass chamber by a valve guide located at the valve body, a diaphragm being located in the diaphragm chamber, a first side tip of a valve rod being fixed in the diaphragm chamber so that the valve rod is operationally moved along with movement of the diaphragm chamber, a valve disc fixed to a second side tip of the valve rod being located in the bypass chamber, andthe diaphragm chamber is divided into a control pressure chamber in which a suction pressure defined as a negative pressure, equal to or less than atmospheric pressure, by the charge air is provided in a space above the diaphragm so that the diaphragm is pulled, and a normal static pressure chamber in which a static pressure greater than the negative pressure is provided between a space beneath the diaphragm and a space above the valve guide. 2. The separation chamber type anti-surge valve of claim 1, wherein the control pressure chamber and the normal static pressure chamber are formed using inner spaces of the valve body and the valve cover, the bypass chamber is formed using the inner space of the valve body, the charge air passage inlet communicates with the charge air passage outlet through the bypass chamber, and the charge air passage inlet and the charge air passage outlet have a phase difference of 90 degrees relative to each other. 3. The separation chamber type anti-surge valve of claim 1, wherein the valve guide is located at a position stepped portion forming a stepped surface on an inner wall of the valve body. 4. The separation chamber type anti-surge valve of claim 1, wherein the diaphragm is made of a rubber material, and has an edge protrusion formed at an edge thereof such that the edge protrusion is fitted between adhered surfaces of the valve body and the valve cover. 5. The separation chamber type anti-surge valve of claim 4, wherein a reinforced fabric is attached on one side surface of the diaphragm. 6. The separation chamber type anti-surge valve of claim 4, wherein one side surface of the diaphragm is provided with a diaphragm cup through which the valve rod passes such that the valve rod is fastened by a flange nut, and another side surface of the diaphragm is provided with a diaphragm plate through which the valve rod passes. 7. The separation chamber type anti-surge valve of claim 1, wherein the control pressure chamber is connected with a control pressure passage nipple for provision of the negative pressure, and the normal static pressure chamber is connected with a normal static pressure passage nipple for provision of the static pressure. 8. The separation chamber type anti-surge valve of claim 1, wherein the valve guide is provided with a guide bush through which the valve rod passes. 9. The separation chamber type anti-surge valve of claim 1, wherein a lower surface of the valve disc is provided with a valve seat adhered to a valve seat seating surface formed at an inlet surface of the charge air passage outlet, and the valve seat and the valve disc are fixed to the valve rod by a rivet. 10. The separation chamber type anti-surge valve of claim 9, wherein the valve disc is further provided with an O-ring, and the O-ring is fitted into the valve disc to surround the valve rod. 11. The separation chamber type anti-surge valve of claim 1, wherein the valve body comprises: a body flange through which the fastener passes;a body nipple hole connected with a normal static pressure passage nipple for provision of the static pressure to the normal static pressure chamber;an airtight groove recessed at an edge of the body flange such that an edge of the diaphragm is fitted into the airtight groove;a position stepped portion forming a stepped surface on an inner wall of the inner space such that the valve guide is located at the position stepped portion; anda valve seat seating surface formed at an inlet surface of the charge air passage outlet to come into contact with the valve disc. 12. The separation chamber type anti-surge valve of claim 11, wherein the valve body is further formed with a plug hole communicating with the inner space at a portion opposite to the body nipple hole such that a plug is fitted into the plug hole. 13. The separation chamber type anti-surge valve of claim 1, wherein the valve cover comprises: a cover flange through which the fastener passes;a cover nipple hole connected with a control pressure passage nipple for provision of the negative pressure to the control pressure chamber; anda spring boss on which a control spring for elastically supporting the diaphragm is seated. 14. The separation chamber type anti-surge valve of claim 1, wherein the fastener includes at least four fasteners, and each of the at least four fasteners evenly fastens the valve body and the valve cover.