TWI795931B - Drain trap - Google Patents

Abstract

Provides a highly durable drain trap that is easy to maintain and prevents condensation. The drain trap includes: a bottomed cylindrical body part formed on the side wall by a receiving pipe part for receiving liquid and a discharge pipe part for discharging liquid; . A cover that closes the inner space of the main body, and an airtight case that encloses at least a part of the outer surface of the main body forming the storage space in an airtight state. A gap is formed between the airtight case and the main body. Both the airtight case and the main body are transparent. When the airtight case is installed on the main body, the cover and the separator are detachable.

Description

drain trap

The invention relates to a drainage trap arranged in a drainage channel.

The drain trap is installed in the drain passage that discharges liquid such as the drain of the air conditioner to the waste water tank. In the past, generally known drainage traps include: a bottomed cylindrical body part formed on the side wall by a receiving pipe part for receiving liquid and a discharge pipe part for discharging liquid; The cover part and the detachable partition body divide the internal space into a storage space communicating with the receiving pipe part and storing liquid, and a discharge space communicating with the discharge pipe part and discharging liquid (refer to Patent Document 1).

The drainage trap described in Patent Document 1 penetrates the partition body to make the storage space and the discharge space non-communicative, and together with the water sealing function of the liquid stored in the storage space, it prevents the reverse flow of polluted air or odor. When the liquid stored in the storage space of this drain trap contaminates the inner surface of the main body or the separator, the cover and the separator are detachable, so it is easy to clean. On the other hand, for drain traps used in places with high temperature and high humidity, dew condensation is likely to occur on the outer surface of the main body due to the temperature difference between the outside air and the liquid stored in the storage space. When condensation occurs, water droplets will fall, causing inconvenience such as flooding the surrounding area. In addition, the extremely low temperature outside air may cause the liquid stored in the storage space to freeze and expand, and it may also cause inconveniences such as damage to the drain trap.

Patent Documents 2 and 3 disclose techniques for preventing dew condensation in drain traps and preventing liquids in storage spaces from freezing. In the drain trap described in Patent Document 2, the outer surface of the metal part is covered with a foamed urethane layer to prevent condensation. In the drain trap described in Patent Document 3, the outer surface except the bottom surface is covered with a thermal insulation material made of foamed resin to prevent the drain trap from being damaged due to freezing of the liquid in the storage space.

In addition, Patent Documents 4 to 6 disclose piping valves without a partition. Patent Document 4 discloses a thermal insulation cover that is in close contact with a piping valve body and an outlet-side connection port. On the branch pipe on the bathtub side of the U-shaped piping valve, the thermal insulation material and heat-insulation cover for the branch pipe are installed separately. Covering parts.

Patent Document 5 discloses an inner body from which cold water flows out from a water outlet, an anti-odor gas cover covering the opening of the inner pipe at the bottom of the inner body, and a state where a drain pipe is formed at the bottom and a gap is formed with the outer surface of the inner body. The outer body that covers the inner body. Drainage is stored inside the inner body, and when it is stored to a specified amount, it will be discharged to the drain through the gap between the cover body and the inner pipe.

Patent Document 6 discloses a U-shaped piping valve having a body portion to which an outflow portion is connected through a joint nut. The U-shaped piping valve is covered with a valve cover as a whole, and when a transparent piping valve is used, the valve cover should preferably be opaque.

prior art literature

Patent Document 1: International Publication No. 2007/116531

Patent Document 2: Japanese Publication No. 53-9761

Patent Document 3: Japanese Utility Model Publication No. 2-106087

Patent Document 4: Japanese Unexamined Patent Publication No. 2002-322706

Patent Document 5: Japanese Publication No. 53-29549

Patent Document 6: Japanese Patent Application Laid-Open No. 10-82085

The drain traps described in Patent Documents 2 and 3 use foamed resin to cover the outer surface of the drain trap. Therefore, when the drain trap is provided with a detachable partition as described in Patent Document 1, the main body cannot be visually recognized. interior of the department. In addition, even if it is described in Patent Documents 4 to 6, valves such as piping valves without a partition, or valves where a partition cannot be attached and detached, if the outer surface is covered with foamed resin, the inside of the valve cannot be seen. Therefore, it is impossible to confirm the contamination status of the inner surface of the main body or the separator, and maintenance problems arise. In addition, as described in Patent Document 6, when the entire outer surface of the drain trap is covered with a valve cover, the entire valve cover must be removed for maintenance, and the heat insulation function cannot be exhibited. In addition, the foamed resin lacks durability, and the foamed resin may be damaged under a severe use environment, and may not be able to exhibit a desired heat insulating function.

Therefore, there is a need for a highly durable drain trap that is easy to maintain and prevents condensation.

The characteristic structure of the drain trap in the present invention is to have: a cylindrical body part formed on the side wall by a receiving pipe part for receiving liquid and a discharge pipe part for discharging liquid; A detachable partition that communicates with the discharge pipe and discharges the liquid from the discharge space, a cover that closes the internal space of the main body, and surrounds at least a part of the outer surface of the main body that forms the storage space in an airtight state. Airtight shell, formed between the airtight shell and the body part The gap, the airtight case and the main body are transparent. When the airtight case is mounted on the main body, the cover and the separator are detachable.

In this configuration, at least a storage space is formed in the main body, and a gap is formed between the airtight case surrounding a part of the outer surface of the main body in a sealed state and the main body, even if there is a temperature difference between the liquid stored in the storage space of the main body and the outside air, Condensation can also be suppressed through gaps. Therefore, it is possible to prevent water droplets from falling and the surrounding area from being flooded. Moreover, if it is an airtight case, it can form an integral unit with the main body, so it is more beautiful than conventional foamed resins, and at the same time has high durability, and can be used as a drain trap for long-term use.

In addition, if both the airtight case and the main body are of a transparent structure as in the present structure, the visibility of the inner space of the main body can be improved, and the contamination status of the inner surface of the main body or the separator can be confirmed. Furthermore, if the cover and partition are detachable when the airtight case is mounted on the main body, dew condensation can be prevented and the detachable partition can be cleaned by removing the cover, making maintenance extremely easy. easy. And when the drain trap located in the drain pipe of the air conditioner is dirty or blocked, the drip pan in the air conditioner body is in a dirty state. If the dirt in the air conditioner body is not dealt with, the drip pan will be blocked and water will leak from the air conditioner body. However, to check the dirtiness of the drip pan, it is necessary to disassemble the air conditioner installed in the space above the ceiling, etc., which takes a lot of time. energy. According to this structure, both the airtight case and the main body are transparent, so that the dirty state of the drain trap can be easily confirmed visually, and it can be judged whether it is necessary to clean the drip tray of the air conditioner main body. Therefore, water leakage caused by not cleaning the drip tray can be prevented in advance. In this way, it is possible to provide a highly durable drain trap that is easy to maintain and prevents condensation.

Another characteristic structure is that the connection between the side wall and the receiving pipe portion and the connection between the side wall and the discharge pipe portion are covered by the airtight case while forming a gap with the airtight case.

Since liquid tends to accumulate at the connection between the receiving pipe or the discharge pipe and the side wall, this structure can reliably prevent dew condensation on the surface of the receiving pipe or discharge pipe by creating a gap between the connection and the airtight case.

As for other characteristic structures, the airtight shell is composed of plural segments that are separated from each other.

According to this structure, the airtight case can be easily attached to the main body even if the receiving pipe portion and the drain pipe portion form a drain trap having a complicated shape in the main body.

1: Separator

2: Undertake the management department

2A: Connection

3: Discharge pipe

3A: Connection

3a: lower end

4: Internal space

5: Main body

6: Cover

6a: convex part

7: storage space

8: Evacuate the space

8a: a part

9: airtight shell

10: The first partition

10a: hanging part

11: The second partition

12: Gap

13: Opening

14:Sealing part

14a: Body side sealing part

14b: Separator side seal

15: valve body

16: valve seat

17: Protective parts

18: Screw part

19: feet

20: Resin parts

21: Height adjustment parts

23: reflector

51: side wall

51a: flat surface

51b: Inclined section

52: bottom

91: Void

92: split body

92A: The first split body

92a: joint surface

92a1: concave part

92a2: convex part

92B: The second split body

92b: The first adhesive surface

92c: Second Adhesive Surface

92d: flat surface

92e: flat surface

92f: joint section

92f1: joint recess

92f2: Engagement protrusions

92g: ring sealing surface

92h: Engagement recess

92i: Engagement recess

93: Bottom side connecting member

93a: engagement protrusion

93A: bottom wall

93a1: engagement recess

93B: side wall

94: Lid side connecting member

94A:Engine

94a: first engagement protrusion

94B: Establishment Department

94b: second engagement protrusion

94c: Engagement protrusions

95: Gap

X: drain trap

Y: Tube axis direction

Figure 1: Longitudinal sectional view of a drain trap.

Figure 2: Sectional view of line II-II in Figure 1.

Figure 3: Sectional view of line III-III in Figure 1.

Figure 4: Appearance oblique view of the drain trap.

Figure 5: An exploded oblique view of the drain trap.

Fig. 6: A longitudinal sectional view of other implementation types of drainage traps.

Fig. 7: A sectional view along line VII-VII of Fig. 6 .

Figure 8: Sectional view of line VIII-VIII in Figure 6.

Fig. 9: An exploded oblique view of other implementation types of drainage traps.

The implementation of the drainage trap of the present invention will be described below with reference to the drawings. However, the present invention is not limited to the following embodiments, and various modifications can be made without departing from the gist.

As shown in Figures 1 to 5, the drainage trap X includes: a bottomed cylindrical body part 5 formed on a side wall 51 by a receiving pipe part 2 for receiving liquid and a discharge pipe part 3 for discharging liquid. The cover part 6 that the internal space 4 is closed, and the partition body 1, the partition body 1 divides the internal space 4 into a storage space 7 that stores and stores liquid from the receiving pipe part 2, and a storage space that communicates with the discharge pipe part 3 and discharges the liquid. discharge space8. In addition, the drain trap X is provided with an airtight case 9 that encloses at least a part of the side wall 51 of the main body 5 and the bottom 52 of the main body 5 (at least a part of the outer surface of the main body 5 forming the storage space 7 ) in a sealed state. In the following description, the side of the cover part 6 is on the top, and the side of the bottom 52 of the main body part 5 is on the bottom.

The main body 5 is molded using a resin material, and the bottom 52 is formed in a flat cylindrical shape. The receiving pipe portion 2 and the discharge pipe portion 3 are integrally formed with the side wall 51 as a water flow channel extending horizontally from the side wall 51 , and connected to the side wall 51 of the main body 5 in opposite directions. There is a height difference between the joint 2A of the receiving pipe part 2 and the joint 3A of the discharge pipe part 3, and the receiving pipe part 2 is higher than the discharge pipe part 3 by a small specified value (for example, 5 mm). The pipe axis direction Y of the receiving pipe part 2 and the pipe axis direction Y of the discharge pipe part 3 are translated in the vertical direction in the longitudinal section view (side view) shown in FIG. 1 , and viewed in the cross section shown in FIG. (Plane viewing) is also the same. The above-mentioned structure makes it easy for the liquid to flow from the receiving pipe part 2 to the discharge pipe part 3 by forming a height difference between the receiving pipe part 2 and the discharge pipe part 3 .

Of the outer surfaces of the side wall 51 of the main body 5, a surface perpendicular to the direction in which the receiving pipe portion 2 and the discharge pipe portion 3 are connected is a flat surface 51a (see FIGS. 4 and 5). In addition, on the outer surface of the side wall 51, there is provided an inclined section 51b inclined from the top of the receiving pipe part 2 to the bottom of the discharge pipe part 3, and the diameter of the cover part 6 side of the inclined section 51b is larger than the diameter of the bottom 52 side of the inclined section 51b. .

The cover part 6 is circular in plan view, and can be attached to the main body part 5 by screwing the screw parts 18 formed on the outer peripheral surface of the main body part 5 and the inner peripheral surface of the cover part 6 (refer to FIG. 1 ). In addition, on the outer periphery of the cover part 6, several protrusions 6a protruding radially outward at equal intervals are formed, and the user's fingers can hook the protrusions 6a to easily attach the cover part 6 to the main body 5 (see FIG. 4). The cover portion 6 can be attached and detached with the airtight case 9 attached to the main body portion 5 .

Moreover, the reflector 23 (for example, reflective tape) is attached to the outer part of the cover part 6, and the whole periphery of the circumferential direction (refer FIG. 4 and FIG. 5). Accordingly, when the drain trap X is installed in the space above the ceiling, the operator can easily recognize the installation position of the drain trap X by irradiating light on the reflector 23 . In addition to the drainage passage equipped with the drainage trap X, various passages are also provided, so for example, it is possible to make the installation in the drainage The reflector 23 of the steam trap X is red, and the members provided in other passages are provided with yellow reflectors, and reflectors of different colors are used for each passage.

The partition 1 is composed of a cylindrical first partition 10 and a plate-shaped second partition 11 extending outward from the first partition 10 along its entire circumference in the circumferential direction. The first partition 10 has a notch 12 in which a part of the circumference is notched along the vertical direction and a rectangular opening 13 in a region above the second partition 11 (see FIG. 5 ). The opening 13 is disposed at a position facing the notch 12 . The second partition 11 is disposed on the entire circumference of the first partition 10 in an inclined state with the vicinity of the lower end of the notch 12 as the lowest position and the vicinity of the center of the opening 13 as the uppermost position (see FIG. 1 ). ).

The partition body 1 can be attached to and detached from the internal space 4 of the main body part 5, and in the state installed in the internal space 4 of the main body part 5, the lower side of the internal space 4 of the main body part 5 is partitioned into a storage space 7, and the internal space 4 The upper side of the partition is the discharge space 8 . In this way, the internal space 4 is divided by the partition body 1 , and the entire bottom 52 of the main body portion 5 is used as the storage space 7 . In addition, the separator 1 includes: when the storage space 7 stores more than a predetermined amount of liquid, a floating spherical valve body 15 that allows the liquid to flow from the storage space 7 to the discharge space 8, and a valve seat that receives and supports the valve body 15 16. The valve seat 16 is annular and disposed inside the first partition 10 . The valve body 15 has a structure in which the opening of the annular valve seat 16 is normally closed.

As shown by the double dotted line in Figure 1, when more than a set amount of liquid is stored in the storage space 7, the valve body 15 will float from the valve seat 16 to open the valve, and the liquid will flow from the storage space 7 to the discharge space 8, and then The discharge pipe section 3 discharges. And when the liquid storage volume in the storage space 7 does not reach the set volume, the valve body 15 will descend and abut against the valve seat 16 to close the valve. At this time, the inner peripheral surface of the first partition 10 guides the valve body 15 to float and descend in the vertical direction.

When the partition body 1 is attached to the internal space 4 of the main body 5 , the valve seat 16 is disposed on the partition body 1 at a position lower than the lower end portion 3 a of the discharge pipe 3 . In other words, there is a time difference between when the valve body 15 floats from the valve seat 16 and when the liquid is discharged from the discharge pipe portion 3 . Through this time difference, even if the self-contained tube 2 The amount of liquid flowing into the storage space 7 is small, and the valve body 15 can also be suppressed from repeatedly floating from the valve seat 16 and falling toward the valve seat 16 in a short period of time, thereby suppressing the generation of noise.

In addition, the valve seat 16 is disposed above the lower end of the first partition 10 in the vertical direction, and the first partition 10 has a hanging portion 10 a extending downward from the valve seat 16 . By setting the hanging portion 10a in this way, the storage space 7 forms an inverted U-shaped passage at the bottom 52 of the main body 5, and the storage space 7 is water-sealed by the liquid stored in the storage space 7. In addition, by disposing the storage space 7 on the bottom 52 side of the main body 5, when the valve body 15 floats up from the valve seat 16, the storage space 7 can be normally water-sealed through the liquid stored in the storage space 7.

Between the cover 6 and the separator 1 installed in the internal space 4 , there is provided a protective member 17 which is in close contact with the cover 6 and reduces the coefficient of friction between the cover 6 and the separator 1 . The protective member 17 is formed into a disk shape through a resin such as silicone. In the protective member 17 , the upper surface on the side contacting the cover 6 is in close contact with the inner surface of the cover 6 through the sucker effect. In addition, the lower surface of the protective member 17 on the side in contact with the separator 1 installed in the internal space 4 is smoothed to reduce the coefficient of friction between the lower surface of the protective member 17 and the separator 1 .

The side wall 51 of the separator 1 and the body part 5 has a sealing part 14. When the cover part 6 is installed on the body part 5, the sealing part 14 bears the pressing force of the cover part 6 from the up and down direction, and acts on the component force along the up and down direction. Part of the separator 1 and the entire circumference of the side wall 51 are brought into close contact with each other. The seal portion 14 has a body-side seal portion 14 a formed on the side wall 51 of the body portion 5 and a separator-side seal portion 14 b formed on the separator 1 .

The main body side seal portion 14 a is a step portion provided on the entire circumference of the side wall 51 in a state protruding inward from the side wall 51 . And the section portion of the body side sealing portion 14a is in the circumferential direction of the body portion 5, with the vicinity of the upper end position of the receiving pipe portion 2 as the uppermost position, and the vicinity of the lower end position of the discharge pipe portion 3 as the lowest position, in the body portion 5 The entire circumference of the circumferential direction is set in an inclined state. The separator-side sealing portion 14 b is an outer end portion of the second partition 11 inclined along the entire circumference of the separator 1 in the circumferential direction. On the separator side seal 14b, a resin member 20 (for example, elastomer resin) is provided in a state sandwiched from top to bottom at the separator side sealing portion 14b.

In the state where the separator 1 is installed in the inner space 4 of the main body 5 , the cover 6 is attached to the main body 5 by screwing the protective member 17 and the screw part 18 between the separator 1 . At this time, the lid part 6 pushes the separator 1 downward, and the body-side sealing part 14a and the separator-side sealing part 14b receive the downward pressing force. The body-side seal portion 14a and the separator-side seal portion 14b press the separator-side seal portion 14b against the body-side seal portion 14a by their downward pressing force to make close contact. In this way, the partition side seal portion 14b and the body side seal portion 14a are brought into close contact with each other on the entire inner surface of the side wall 51 of the main body portion 5, and the storage space 7 and the discharge space 8 are blocked.

In the resin member 20 of the separator side sealing part 14b, in the state where the separator 1 is installed in the internal space 4, the height adjustment member 21 faces the side wall 51 to the part 8a of the discharge space 8 of the discharge pipe part 3, and the discharge pipe part 3. The lower end portions 3a are arranged at the same height. In the circumferential direction of the side wall 51 of the main body 5 , corresponding to the position of the discharge pipe 3 , the stage of the main body side sealing portion 14 a is located below the lower end 3 a of the discharge pipe 3 . Therefore, when the separator 1 is attached to the internal space 4 , a part 8 a of the discharge space 8 facing the discharge pipe portion 3 is lower than the lower end portion 3 a of the discharge pipe portion 3 . Therefore, by forming the height adjustment member 21, the liquid is suppressed from accumulating in the part 8a of the discharge space 8 facing the discharge pipe portion 3, and the corrosion caused by the liquid is suppressed. Moreover, the resin member 20 which provided the height adjustment member 21 in the separator sealing part 14a is used together.

As shown in FIG. 5 , when the separator 1 is installed in the internal space 4 , it includes leg portions 19 protruding downward from the internal space 4 . A plurality of leg portions 19 are provided at regular intervals in the circumferential direction of the first partition portion 10 . take this. If the partition body 1 is inserted into the internal space 4 in the upside-down state, the legs 19 protrude upward from the internal space 4 , and the cover 6 cannot be attached to the main body 5 . In this way, when inserting the separator 1 into the internal space 4 , it is possible to prevent the upper and lower directions of the separator 1 from being mistaken.

The main body 5 and the separator 1 are transparent, and the valve body 15 is a color (for example, blue) that can be identified from the main body 5 and the separator 1 . Thereby, in the state where the partition body 1 is installed in the internal space 4 of the main body part 5, An operator can view and recognize the position of the valve body 15 from the outside of the main body part 5 . Therefore, it is possible to easily confirm whether the separator 1 is installed at an appropriate position, and to confirm the contamination of the separator 1 . The term "transparent" here refers to a state in which the inside of the main body 5 can be seen through, and includes colorless and transparent, colored and transparent, and translucent.

As shown in FIG. 1 , the airtight case 9 is attached to the outside of the main body 5 and is formed of the same transparent resin material as that of the main body 5 . The airtight case 9 encloses almost the entire area of the side wall 51 of the main body 5 and the bottom 52 of the main body 5 in an airtight state, and a gap 91 is formed between the airtight case 9 and the main body 5 by air. Thereby, even if there is a temperature difference between the liquid stored in the storage space 7 on the bottom 52 side of the main body 5 and the outside air, the occurrence of dew condensation can be suppressed through the gap 91 . In addition, the junction 2A between the side wall 51 and the receiving pipe portion 2 and the junction 3A between the side wall 51 and the discharge pipe portion 3 are covered by the airtight case 9 with a gap 91 formed therebetween. The joints 2A, 3A between the receiving pipe portion 2 or the discharge pipe portion 3 and the side wall 51 are places where liquid is easy to accumulate, so if like this embodiment, a gap 91 is formed between the joints 2A, 3A and the airtight case 9, That is, dew condensation can be reliably prevented from forming on the surface of the receiving pipe portion 2 or the discharge pipe portion 3 .

As mentioned above, the airtight case 9 is formed of the same transparent resin material as the main body 5, so the see-through ratio of the airtight case 9 and the main body 5 is the same, and air is present between the airtight case 9 and the main body 5, so the operator can easily The position of the valve body 15 is seen from the outside of the main body portion 5 . On the other hand, when the drain trap X installed in the drain pipe of the air conditioner is dirty or clogged, the drip pan in the air conditioner body is in a dirty state. If the dirt in the air conditioner body is not dealt with, the drip pan will be blocked and water will leak from the air conditioner body. However, in order to check the dirtiness of the drip pan, it is necessary to disassemble the air conditioner installed in the space above the ceiling, etc., which will cost a lot of money. time strength. If both the airtight case 9 and the main body 5 are made transparent like this embodiment, the dirt condition of the drain trap X can be easily confirmed visually, and it can be judged whether the drip tray of the air conditioner body needs to be cleaned. Thus, water leaks due to uncleaned drip trays can be prevented in advance.

The airtight case 9 includes: a plurality (two in this embodiment) of split bodies 92 that are split from each other, and a cup-shaped bottom-side connecting member 93 ( An example of the first connecting member), and connecting the pair of split bodies 92 from the side of the cover 6 (connecting member 93 on the bottom side) The opposite side) is connected to the annular columnar cover side connecting member 94 (an example of the second connecting member) (see FIGS. 4 and 5 ).

The split body 92 is composed of a first split body 92A and a second split body 92B, and the first split body 92A and the second split body 92B are symmetrical with respect to the pipe axis direction Y of the receiving pipe part 2 and the discharge pipe part 3 (Refer to Figure 2). In other words, the above-mentioned first split body 92A and the second split body 92B are in a half-shape formed from the sides of the main body portion 5 and combined with each other. As shown in FIG. 5 , the first split body 92A and the second split body 92B respectively have: a flat joint surface 92a along the tube axis direction Y, and an arc-shaped first adhering surface that is in close contact with the outer peripheral surface of the receiving tube portion 2 92b, and the arc-shaped second adhering surface 92c that is in close contact with the outer peripheral surface of the discharge pipe part 3. Recesses 92 a 1 and protrusions 92 a 2 are respectively formed on the first segment 92A and second segment 92B along the bonding surface 92 a , and the recesses 92 a 1 and protrusions 92 a 2 are fitted to form the segments 92 . In addition, the concave portion 92a1 and the convex portion 92a2 are fitted to form a labyrinth structure, and air in the gap 91 is prevented from leaking to the outside. Furthermore, the first adhering surface 92b and the second adhering surface 92c are in close contact with the outer peripheral surfaces of the receiving pipe portion 2 and the discharge pipe portion 3, thereby preventing the air in the gap 91 from leaking to the outside.

As shown in FIG. 3 and FIG. 5 , on the inner surfaces of the first divided body 92A and the second divided body 92B, towards the inner surface of the flat surface 51 a of the main body portion 5, a flat flat surface 92 d is formed respectively, and a flat surface 92 d is formed. The outer surface of the portion also forms a flat surface 92e. In addition, the bottoms of the first divided body 92A and the second divided body 92B each form a step portion receding radially inward from the outer surface, that is, a joining step portion 92f joined to the bottom-side connecting member 93 . A flat surface 92e is continuously formed on the outer surface of the joining step portion 92f, and the cross-sectional shape of the bottom of the split body 92 is circular having a pair of opposing linear side portions. The linear portion of the bottom outer surface of the joining step portion 92f is formed with an engaging recessed portion 92f1 that engages with the engaging protrusion 93a of the bottom side connection member 93 . The cross-sectional shape of the bottom of the split body 92 is circular with a pair of opposing linear side portions, thereby preventing rotation of the bottom-side connecting member 93 joined to the joint segment portion 92f.

The upper ends of the first split body 92A and the second split body 92B respectively form an annular sealing surface 92g protruding radially inward, and the annular sealing surface 92g is in close contact with the outer surface of the main body 5, thereby preventing The air in the space 91 is prevented from leaking to the outside. In addition, on the outer surfaces of the upper ends of the first divided body 92A and the second divided body 92B, an engaging recessed portion 92h engaged with the first engaging protrusion 94a of the cover side connection member 94 is formed.

The bottom-side connection member 93 has a cup-shaped structure, and has a bottom wall 93A and a side wall 93B protruding from the outer periphery of the bottom wall 93A in an annular shape. The side wall 93B has a shape formed along the side surface of the bottom of the divided body 92 . The bottom side connecting member 93 is attached to the bottom of the pair of split bodies 92 joined to each other, thereby connecting the pair of split bodies 92 . At this time, the engagement protrusion 93 a formed on the side wall 93B engages with the engagement recess 92 f 1 of the division body 92 in a state where the gap 95 is formed between the bottom of the division body 92 and the bottom wall 93A. The void 95 is filled with air in the same manner as the void 91 described above.

The cover side connecting member 94 is a circular columnar structure having an annular flange portion 94A and an erected portion 94B. The inner diameter of the flanged portion 94A is larger than the outer diameter of the main body portion 5, and the erected portion 94B is erected from the outer circumference of the flanged portion 94A. It is provided on the bottom 52 side. The lower surface (inner surface) of the collar portion 94A is in contact with the upper surface of the split body 92 . The upstanding portion 94B has a first engagement protrusion 94a engaged with the engagement recess 92h of the split body 92 on the base end side, and a second engagement protrusion 94b engaged on the upper end of the flat surface 92e of the split body 92 on the front end side. The first engagement protrusion 94 a and the second engagement protrusion 94 b are engaged with the split body 92 , thereby firmly fixing the lid side connection member 94 to the split body 92 .

In this embodiment, the airtight case 9 surrounds almost the entire area of the side wall 51 and the bottom 52 of the main body 5, and a gap 91 is formed between the airtight case 9 and the main body 5. There is a temperature difference between the liquid in the storage space 7 and the outside air, and the occurrence of dew condensation can also be suppressed through the gap 91 . Therefore, it is possible to prevent the inconvenient situation in which the periphery is soaked in water due to falling water droplets. In addition, the bottom 52 side of the main body 5 is the storage space 7 for the liquid, so if, like this embodiment, the gap 95 formed between the bottom of the split body 92 and the bottom wall 93A of the bottom-side connecting member 93 is provided, The heat preservation effect can be improved through the gap 91 and the gap 95, and the liquid can be prevented from freezing. In addition, the joints 2A, 3A between the receiving pipe portion 2 or the discharge pipe portion 3 and the side wall 51 are easy to accumulate liquid, so if, like this embodiment, a gap 91 is formed between the joints 2A, 3A and the airtight case 9, That is, dew condensation can be reliably prevented from forming on the surface of the receiving pipe portion 2 or the discharge pipe portion 3 . and, If it is the airtight case 9 in this embodiment, it forms a continuous integral unit structure with the appearance of the main body 5, so it is not only beautiful, but also has high durability, and can be used as a drainage trap X for long-term use.

If, like this embodiment, the joint surface 92a of the split body 92 is along the pipe axis direction Y of the receiving pipe part 2 and the discharge pipe part 3, it can be installed from the side direction of the receiving pipe part 2 and the discharge pipe part 3. The airtight case 9 is therefore easy to install. In addition, when the gap 91 is formed between the airtight case 9 and the main body 5, if the bottom side connecting member 93 and the cover side connecting member 94 are provided on the bottom side and the cover side, the drainage trap X can be easily manufactured.

Other implementation types

(1) In Fig. 6 to Fig. 9, the drain trap X of another embodiment is shown. In addition, in order to make the drawings easy to understand, the same components are given the same names and symbols, and only the different structures will be described below. In the airtight case 9 in this embodiment, the arc-shaped first adhesive surface 92b closely attached to the outer peripheral surface of the receiving pipe part 2 and the arc-shaped second adhesive surface closely attached to the outer peripheral surface of the discharge pipe part 3 92c are closely attached to the middle part along the pipe axis direction Y of the receiving pipe part 2 and the discharge pipe part 3 respectively. Thereby, compared with the above-mentioned embodiment, more gaps 91 can be ensured between the airtight case 9 and the receiving pipe part 2 and the discharge pipe part 3 in the main body part 5, so that the receiving pipe part 2 or the discharge pipe can be reliably prevented from being damaged. Dew condensation is formed on the surface of the portion 3 .

In addition, in this embodiment, the joining state of the split body 92 and the cover side connecting member 94 is made different. Specifically, an engagement recess 92i is provided on the outer surfaces of the upper ends of the first split body 92A and the second split body 92B, and an engagement protrusion 94c is provided on the base end side of the upstanding portion 94B of the cover-side connecting member 94, so that the engagement recess 92i Engages with the engaging protrusion 94c, and fixes the cover side connecting member 94 to the split body 92 (see FIGS. 8 and 9 ). In other words, as in the above-mentioned embodiment, the second engagement protrusion 94b that engages with the upper end of the flat surface 92e of the split body 92 is not provided on the front end side of the upstanding portion 94B. In this arrangement, the cover 6 is screwed to the main body 5 , whereby the cover 6 pushes the cover-side connecting portion 94 downward, so the cover-side connecting portion 94 is firmly fixed to the split body 92 . In addition, in this embodiment, the joint form of the split body 92 and the bottom side connection member 93 is different. Specifically, in the above-mentioned embodiment, the engagement protrusion 93a of the bottom side connecting member 93 is used as the engagement recess 93a1, and the engagement recess 92f1 of the split body 92 is used as the engagement protrusion 92f2.

(2) A heat insulating sheet may be attached to the gap 95 formed between the bottom of the divided body 92 and the bottom wall 93A of the bottom side connecting member 93 . The heat insulating sheet is a laminated material in which aluminum is coated on the surface of a heat insulating material such as aluminum or a laminated resin layer. The bottom 52 side of the main body 5 is the liquid storage space 7, so if a heat insulating sheet is provided on the bottom side connecting member 93 disposed on the bottom 52 side of the main body 5, the liquid in the storage space 7 can be prevented from freezing. Furthermore, when the heat insulating sheet is disposed on the bottom 52 side of the main body 5 , the visibility of the internal space 4 of the main body 5 is not hindered.

(3) The heat insulating sheet installed in the gap 95 can also be replaced by a hygroscopic agent, or additionally added with a hygroscopic agent. At this time, even if the air with high humidity is sealed in the space 95, condensation inside the space 95 can be prevented. Therefore, the heat reflow rate is lowered, and the effect of preventing dew condensation is improved.

(4) The airtight case 9 can also be arranged only in the storage space 7 part. In other words, the airtight case 9 can also be disposed opposite to the side wall 51 of the main body 5 below the inclined section 51b. In addition, the airtight case 9 can also be disposed on the side wall 51 of the main body 5 opposite to the bottom of the receiving pipe portion 2 and the discharge pipe portion 3 , and there is no special limitation.

(5) The split body 92 of the airtight case 9 is symmetrical to the pipe axis direction Y of the receiving pipe portion 2 and the discharge pipe portion 3, but the split body 92 of the airtight case 9 can also be divided into two vertically.

(6) A sealing member may be provided on the joint surface 92a or the adhesive surfaces 92b, 92c.

(7) The void 91 or the void 95 may also be formed in a vacuum.

(8) The cover part 6 may be omitted, and the separator 1 may have a non-attachable structure.

(9) In the above-mentioned embodiment, the cover 6 can be mounted on the main body 5 by screwing the screw 18 , but it can also be formed by pressing the cover 6 into the main body 5 . Fitting structure that can be attached to the main body 5. In other words, it is possible to appropriately change the means for attaching the cover portion 6 to the main body portion 5 .

(10) In the above-mentioned embodiment, the bottom of the body part 5 is flat, and the bottom of the body part 5 is used as a storage space 7 as a whole, but it is also possible to change the body appropriately, for example, by adding a height difference to the bottom of the body part 5 The shape of the bottom of the body part 5 makes the bottom of the body part 5 as a storage space 7 as a whole.

(11) In the above-mentioned embodiment, although the shape of the side wall 51 of the main body 5 and the shape of the separator 1 in a planar view are roughly elliptical, they can also be rectangular, and can also be appropriately changed to any shape.

(12) In the above-mentioned embodiment, the valve body 15 is exemplified as a spherical shape, but for example, the valve body 15 can be configured as a plate-shaped body that can freely swing around the horizontal axis, and the shape of the valve body 15 can be appropriately changed.

Industrial availability

The present invention is applicable to a drain trap having a cylindrical body having an inner space communicating with a receiving pipe portion and a discharge pipe portion, and a partition body dividing the inner space of the body into a storage space and a discharge space.

1: Separator

2: Undertake the management department

2A: Connection

3: Discharge pipe

3A: Connection

3a: lower end

4: Internal space

5: Main body

6: Cover

6a: convex part

7: storage space

8: Evacuate the space

8a: a part

9: airtight shell

10: The first partition

10a: hanging part

11: The second partition

12: Gap

13: Opening

14:Sealing part

14a: Body side sealing part

14b: Separator side seal

15: valve body

16: valve seat

17: Protective parts

18: Screw part

19: feet

20: Resin parts

21: Height adjustment parts

23: reflector

51: side wall

52: bottom

91: Void

92: split body

92b: The first adhesive surface

92c: Second Adhesive Surface

92d: flat surface

92e: flat surface

92f: joint section

92f1: joint recess

92g: ring sealing surface

92h: Engagement recess

93: Bottom side connecting member

93a: engagement protrusion

93A: bottom wall

93B: side wall

94: Lid side connecting member

94A:Engine

94a: first engagement protrusion

94B: Establishment Department

94b: second engagement protrusion

95: Gap

X: drain trap

Y: Tube axis direction

Claims (3)

A drain trap comprising: A cylindrical body part, the body part is formed on the side wall by a receiving pipe part for receiving liquid and a discharge pipe part for discharging liquid; A detachable partition body, the partition system divides an internal space of the body part into a storage space communicating with the receiving pipe part and storing liquid, and a discharge space communicating with the discharge pipe part and discharging liquid; a detachable cover portion which closes off the interior space of the body portion; and an airtight case enclosing at least a part of the outer surface of the body portion forming the storage space in a hermetically sealed state; A gap is formed between the airtight case and the body portion; the airtight case and the body part are transparent; The airtight shell is composed of a plurality of partitions which are separated from each other, and the partitions are combined with each other from the sides of the main body. The drainage trap as described in claim 1, wherein, a joint between the side wall and the receiving pipe, and a joint between the side wall and the discharge pipe form the gap with the airtight case In the state, it is covered by the airtight shell. The drain trap according to claim 1 or 2, wherein the cover and the partition are detachable in a state where the airtight case is mounted on the main body.

Images