JP5205213B2 - Fluid controller - Google Patents

Description

  The present invention relates to a fluid controller that opens or closes a fluid passage provided in a body and controls fluid flowing through the passage, and more particularly to a fluid controller that requires heating or cooling from the outside.

BACKGROUND ART Conventionally, a fluid controller that performs heating or cooling using a heat medium is known as disclosed in, for example, Patent Document 1.
JP-A-11-125344

  Heating using hot water as a heat medium is advantageous in that it does not require the use of electricity and can use hot wastewater, etc., compared to heating using a heater, but compared to a heater. There is a problem that it is difficult to increase the hot water temperature, and improvement in heating efficiency is desired.

  The objective of this invention is providing the fluid controller which can improve the heating efficiency at the time of using warm water.

  A fluid controller according to the present invention is a fluid controller comprising a body having a block portion provided with a fluid passage and a cylindrical portion extending from the top surface thereof, and an actuator for opening and closing the fluid passage in the body. A top cover that forms an upper heat medium space for holding a heat medium between the top surface of the body block portion and the outer peripheral surface of the cylinder portion of the body is covered, and the bottom surface of the block portion of the body is placed on the bottom surface of the body block portion. A lower cover for forming a lower heat medium space for holding the heat medium is placed between the upper heat medium space and the lower heat medium space. The heat medium passage is formed avoiding the fluid passage.

  In the present invention, regarding the upper and lower sides, the distal end side of the cylindrical portion of the body is referred to as the upper side, and the base end side (block portion side) is referred to as the lower side. It may be used by turning it upside down or upside down.

  The fluid controller may be a general on-off valve or a control valve. In any case, the configuration of the fluid controller including the actuator is not limited, and may have various configurations and various functions. That is, with respect to a fluid controller including a body in which a fluid passage is provided and an actuator for opening and closing (controlling) the fluid passage, the block portion of the body is covered by the upper cover from above and from the bottom to the bottom. By providing a heat medium space between the body and the upper cover and between the body and the lower cover so as to be sandwiched between the covers, and further providing a heat medium passage in the body for communicating these heat medium spaces. The conventional actuator can be used for heating or cooling.

  The heat medium flowing through the heat medium passage may be hot water (for heating), cooling water (for cooling), steam, or other liquid or gas (vaporization). It may be an easy liquid or a fluid with good thermal conductivity.

  A coating is applied to the body in contact with the heat medium as required (according to the type of the heat medium). The coating may be applied only to the surface of the body, and may be applied not only to the surface of the body but also to the flow path surface of the heat medium passage (the entire surface in contact with the heat medium).

  As a heating means in the fluid controller, a planar heater is often used, but electricity is essential for this, and it may be difficult to adopt it. In addition, from the viewpoint of energy saving, heating using high temperature waste water is required. The fluid controller according to the present invention is suitable for such applications.

  For example, the body of the fluid controller is made of stainless steel such as SUS316 or 316L, and the lower cover and the upper cover are made of stainless steel such as SUS316, for example, but are not limited thereto. It is not a thing.

  Since the plurality of heat medium passages are provided inside the body, the heating or cooling efficiency is higher than that of heating or cooling only from the outside of the body. Moreover, pressure loss can be reduced by adjusting the number of the heat medium passages and the diameter of each passage. Moreover, when applied to an existing fluid controller, it is necessary to change its outer shape and add upper and lower covers, but the internal configuration (configuration other than the heat medium passage) can be used as it is, and the heat medium can be used. A fluid controller that can be used for efficient heating or cooling can be easily obtained.

  According to the fluid controller of the present invention, since the heat medium passage is formed inside the block portion of the body, the efficiency of heating or cooling becomes high, and the number of heat medium passages and the diameter of each passage are adjusted. By doing so, pressure loss can be easily reduced.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 5 show an embodiment of a fluid controller according to the present invention.

  The fluid controller (1) includes a body (2) having a regular quadrangular columnar block portion (3) provided with a fluid passage and a cylindrical portion (4) extending upward from the top surface thereof, and a block portion of the body (2). (3) The upper cover (11) provided on the top surface, the block part (3) of the body (2), the lower cover (12) provided on the bottom surface, and the ground (6) above the body (2) And an actuator (5) attached thereto.

  The block (3) of the body (2) is provided with an inlet side joint (7) and an outlet side joint (8). In the casing (5a) of the actuator (5), although not shown, a stem drive mechanism for blocking and opening the fluid passage in the fluid controller (1) is built. The stem drive mechanism has, for example, a piston fixed to the upper end portion of the stem, a biasing member that biases the piston downward, a compressed air introduction portion for introducing compressed air to the lower surface of the piston, and the like. By using the stem drive mechanism, the stem that is movably moved up and down in the cylindrical part (4) of the body (2) is moved up and down using the operating pressure of the compressed air, and the inside of the block (3) of the body (2) The fluid passage is shut off / opened by the vertical movement or deformation of the valve element disposed in the position along with the vertical movement of the stem. The ground (6) has a flange (6a) provided at the lower end thereof attached to the top surface of the cylindrical part (4) of the body (2) by a plurality of bolts (9), and an actuator (5) and a nut. Combined by (10).

  The upper cover (11) forms an upper heat medium space (S1) for holding the heat medium between the cylindrical part (4) and the outer peripheral surface of the body (2). Is formed in a cylindrical shape, and is attached to the top surface of the block portion (3) of the body (2) by bolts (13) from above inserted through the four corners. The lower cover (12) forms a lower heat medium space (S2) for holding the heat medium between the bottom surface of the block (3) of the body (2), and is a regular quadrilateral having a recess (25). The block body is a prism block, and is attached to the bottom surface of the block portion (3) of the body (2) by bolts (14) from below that are inserted into the four corners.

  The upper cover (11) is provided with a heat medium introduction joint (15) for introducing a heat medium therein, and the lower cover (12) is provided with a heat medium discharge for discharging the heat medium from the inside. A joint (16) is provided. Here, the joints (15) and (16) are tightened joints using ferrules (15a) and (16a), but other joints may of course be used.

  As shown in FIGS. 3 and 4, the cylindrical portion (4) of the body (2) includes a small-diameter portion (21) connected to the top surface of the block portion (3) and a large-diameter portion (22) connected above the small-diameter portion (22). And have. The outer diameter of the large diameter part (22) is smaller than the diameter of the top surface of the block part (3) (the length of one side of the square) by the thickness of the upper cover (11). Since the outer diameter of (21) is smaller than the outer diameter of the large-diameter portion (22), the upper heat is between the outer peripheral surface of the small-diameter portion (21) and the inner peripheral surface of the upper cover (11). A medium space (S1) is secured.

  The inner diameter of the upper cover (11) is made equal to the outer diameter of the large diameter part (22) of the cylindrical part (4), and the lower surface of the upper heat medium space (S1) is defined by the top surface of the block part (3) The upper surface of the upper heat medium space (S1) is defined by the lower surface of the large-diameter portion (22) of the cylindrical portion (4). The upper surface of the upper cover (11) and the upper surface of the large diameter portion (22) of the cylindrical portion (4) are flush with each other and are pressed downward by the flange portion (6a) of the ground (6).

  An O-ring (23) for sealing is interposed between the outer peripheral surface near the lower end of the large diameter portion (22) of the cylindrical portion (4) and the inner peripheral surface of the upper cover (11). The top of the block (3) has an outer diameter equal to the diameter of the inner peripheral surface of the upper cover (11) so that the lower end of the upper cover (11) can be fitted. An O-ring (24) for sealing is also interposed between the outer peripheral surface of the top of 3) and the inner peripheral surface of the upper cover (11).

  A cylindrical recess (25) is formed on the top surface of the lower cover (12). A lower heat medium space (S2) is formed by the peripheral surface and bottom surface of the recess (25) and the bottom surface of the block portion (3) of the body (2). The diameter of the peripheral surface of the recess (25) is slightly smaller than the diameter of the inner peripheral surface of the upper cover (11). An O-ring (26) for sealing is interposed between the peripheral edge portion of the top surface of the lower cover (12) and the outer peripheral portion of the bottom surface of the block portion (3).

  The block portion (3) is provided with a plurality of heat medium passages (27) extending vertically through the block portion (3) along a pitch circle surrounding the small diameter portion (21) of the cylindrical portion (4). ing. The upper end of the heat medium passage (27) communicates between the outer peripheral surface of the small diameter portion (21) and the inner peripheral surface of the upper cover (11), that is, the upper heat medium space (S1), and the heat medium passage (27). The lower end of this leads to the opening of the recess (25) of the lower cover (12), that is, the lower heat medium space (S2).

  In FIG. 5, the block (3) of the body (2) has a fluid passage (3a) as a whole from the left to the right of the drawing, as shown by a broken line in FIG. ) Are provided three by three so as to face each other through the fluid passages (3a) so as not to interfere with these fluid passages (3a).

  Thus, the heat medium introduced from the heat medium introduction joint (15) of the upper cover (11) passes through the upper heat medium space (S1), the plurality of heat medium passages (27), and the lower heat medium space (S2), A heat medium circulation passage that is discharged from the heat medium discharge joint (16) of the lower cover (12) is formed. The heat medium can be introduced from the joint (16) of the lower cover (12) and discharged from the joint (15) of the upper cover (11).

  In the fluid controller (1), due to adiabatic cooling by adiabatic expansion when the fluid is adjusted from high pressure to low pressure, the body (2) etc. may be cooled, and moisture in the ambient air may be condensed on the outer surface. There are some problems that prevent the dew condensation. In this case, if the heat medium is hot water, the fluid controller (1) can be heated effectively, and condensation can be prevented. If the heat medium is cooling water, the fluid controller (1) can be cooled.

It is a side view which shows one Embodiment of the fluid controller by this invention. It is a front view of the fluid controller by this invention. It is side surface sectional drawing of the fluid controller by this invention. It is front sectional drawing of the fluid controller by this invention. FIG. 5 is a plan sectional view of the fluid controller according to the present invention (a sectional view taken along line V-V in FIG. 2).

Explanation of symbols

(1) Fluid controller
(2) Body
(3a) Fluid passage
(3) Block part
(4) Tube section
(5) Actuator
(11) Top cover
(12) Bottom cover
(27) Heat medium passage
(S1) Upper heat medium space
(S2) Lower heat medium space

Claims (1)

In a fluid controller comprising: a body having a block portion provided with a fluid passage and a cylindrical portion extending from the top surface thereof; and an actuator for opening and closing the fluid passage in the body.
A top cover that forms an upper heat medium space for holding a heat medium between the top surface of the body block portion and the outer peripheral surface of the cylindrical portion of the body is covered, and the bottom surface of the block portion of the body is covered with the bottom surface of the block portion of the body. A lower cover for forming a lower heat medium space for holding the heat medium is placed between the upper heat medium space and the lower heat medium space. A fluid controller, wherein the heat medium passage is formed avoiding the fluid passage.

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