Flow control device and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-10920894-B2
Application number	US-201716307866-A
Country	US
Kind code	B2
Filing date	Jun 8, 2017
Priority date	Jun 8, 2016
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

A flow control device used in a vehicle heat exchange system and a method for manufacturing the same are provided. The flow control device includes a housing and a valve body assembly. The valve body assembly comprises a first valve plate, a second valve plate, and a transmission n part. The housing has an accommodating portion and a protruding limiter, in which the protruding limiter circumferentially limits the first valve plate, a lower side surface of the second valve plate ( 22 ) is disposed opposite to the protruding limiter, and at least a part of the lower side surface of the second valve plate is in contact with the first valve plate. The transmission part drives the second valve plate to open or close the circulating valve port of the first valve plate and/or adjust the opening degree of the circulating valve port, such that the product sealing performance can be improved.

First claim

The invention claimed is:

1. A flow rate control device, comprising:
a housing, and
a valve body assembly,
wherein the housing has a mounting chamber, at least one inlet and at least one outlet, the valve body assembly is at least partially accommodated in the mounting chamber, and the valve body assembly comprises a first valve plate, a second valve plate and a transmission part,
wherein the housing has a position-limiting protrusion and an accommodating portion at a bottom side of the mounting chamber, the first valve plate is at least partially located at the accommodating portion, the position-limiting protrusion limits the position of the first valve plate in a circumferential direction, a lower surface of the second valve plate is arranged at least partially opposite to the position-limiting protrusion, and the lower surface of the second valve plate is in surface contact with an upper surface of the first valve plate in a sealed manner; and
the housing has at least one opening at the bottom side of the mounting chamber, the at least one opening is in communication with the outlet, the first valve plate has at least one flow valve port corresponding to and in communication with the opening of the housing, the second valve plate is relatively securely connected to the transmission part, and under the driving of the transmission part, the second valve plate opens or closes the flow valve port of the first valve plate and/or regulates the opening degree of the flow valve port,
wherein the accommodating portion and the position-limiting protrusion are complementarily arranged in the housing, and in a direction perpendicular to the first valve plate, a lower surface of the first valve plate is lower than an upper surface of the position-limiting protrusion, the upper surface of the first valve plate is higher than or flush with the upper surface of the position-limiting protrusion, and both sides of the position-limiting protrusion are respectively formed with a first block portion and a second block portion, the first valve plate has a first engaging portion and a second engaging portion, the first engaging portion and the first block portion of the position-limiting protrusion are oppositely arranged, and the second engaging portion and the second block portion of the position-limiting protrusion are oppositely arranged, such that the first block portion and the second block portion limit the position of the first valve plate in the circumferential direction,
wherein the first block portion and/or the second block portion of the position-limiting protrusion are arranged opposite to a side edge of the first valve plate, the first block portion and the second block portion are formed at both side edges of the position-limiting protrusion, the side edges of the position-limiting protrusion are arranged to intersect with the upper surface of the position-limiting protrusion, the first valve plate has a fan-shaped main body portion having a fan shape, the main body portion comprises an arc-shaped portion, and the arc-shaped portion, the first engaging portion, and the second engaging portion form the fan-shaped main body portion.

2. The flow rate control device according to claim 1 , wherein a clearance fit is formed between the first valve plate and the housing, and a clearance which is less than 2 mm is presented between the first engaging portion and the first block portion of the position-limiting protrusion, and/or a clearance which is less than 2 mm is presented between the second engaging portion and the second block portion.

3. The flow rate control device according to claim 1 , wherein the second valve plate is a movable valve plate, the first valve plate is a relatively secured valve plate relative to the second valve plate, the second valve plate is configured to rotate along the upper surface of the first valve plate, the lower surface of the second valve plate has a roughness smaller than or equal to the roughness of an upper surface of the second valve plate, and the upper surface of the first valve plate has a roughness smaller than or equal to the roughness of the lower surface of the first valve plate, and wherein a clearance fit is formed between the first valve plate and the housing, and a clearance which is less than 2 mm is presented between the first engaging portion and the first block portion of the position-limiting protrusion, and/or a clearance which is less than 2 mm is presented between the second engaging portion and the second block portion.

4. The flow rate control device according to claim 3 , wherein the roughness of the upper surface of the first valve plate is greater than 0.03 μm and smaller than 0.48 μm, and/or the roughness of the lower surface of the second valve plate is greater than 0.03 μm and smaller than 0.48 μm.

5. The flow rate control device according to claim 1 , wherein the opening of the housing comprises a first opening and a second opening at the bottom side of the mounting chamber, and the housing has a first outlet and a second outlet, the first outlet is in communication with the first opening, and the second outlet is in communication with the second opening; and the flow valve port of the first valve plate comprises a first flow port corresponding to and in communication with the first opening and a second flow port corresponding to and in communication with the second opening, the first valve plate has a partition, wherein the partition is integrally connected to an inner side of the fan-shaped main body portion, such that the first flow port and the second flow port are formed at both sides of the partition, the flow rate control device has a flow channel via which the inlet is in communication with at least one of the first outlet and the second outlet; and
the second valve plate is a movable valve plate, the first valve plate serves as a relatively secured valve plate relative to the second valve plate, and the second valve plate is rotatable along the upper surface of the first valve plate, the second valve plate comprises a first position and a second position, and when the second valve plate is at the first position, the second valve plate opens the first flow port such that the first outlet conducts, and closes the second flow port such that the second outlet is cut off, and when the second valve plate is at the second position, the second valve plate opens the second flow port such that the second outlet conducts, and closes the first flow port such that the first outlet is cut off.

6. The flow rate control device according to claim 5 , wherein when the second valve plate reaches the first position, the first flow port is opened to a maximum opening degree and the opening degree of the second flow port is zero, and when the second valve plate reaches the second position, the opening degree of the first flow port is zero and the second flow port is opened to a maximum opening degree, and when the second valve plate moves to a position between the first position and the second position, both the first port and the second flow port are opened, and the sum of the opening degree of the first flow port and the opening degree of the second flow port is equal to the maximum flow opening degree of the first flow port or the maximum flow opening degree of the second flow port.

7. The flow rate control device according to claim 6 , wherein the accommodating portion comprises a fan-shaped region, and the housing comprises a dividing portion, a first distribution chamber and a second distribution chamber, the dividing portion integrally extends from a bottom side of the housing, the dividing portion is integrally connected to the position-limiting protrusion, the upper surface of the position-limiting protrusion is higher than an upper surfac

Assignees

• Hangzhou Sanhua Res Inst Co Ltd

Inventors

• Wu Zhi
• Jiang Huayuan
• Yu Yumin

Classifications

• F16K3/314

  Forms or constructions of slides; Attachment of the slide to the spindle · CPC title

• F16K11/074 Primary

  with flat sealing faces · CPC title

• B23P15/001

  valves or valve housings (welding B23K; valve housings per se F16K) · CPC title

• F16K27/045

  with pivotal obturating members · CPC title