CN213178815U

CN213178815U - Liquid heating device

Info

Publication number: CN213178815U
Application number: CN202021818189.2U
Authority: CN
Inventors: 朱泽春; 楼伟; 尉迟衍敏; 郭红伟
Original assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Current assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-05-11
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses a liquid heating device has solved the inconvenient problem of radial seal circle installation, and the technical scheme who solves this problem mainly includes external heating pipe, internal heating body and end cover, and the external heating pipe box is located the outside of internal heating body and is formed the heating runner that supplies liquid to flow, and the periphery side of external heating pipe and/or internal heating body is equipped with sealed face, is equipped with radial seal circle between sealed face and the end cover, and the lateral surface of end cover is equipped with the seal groove that supplies the radial seal circle installation, the notch department of seal groove is equipped with the guide face that the guide radial seal circle impresses the seal groove along the axial, and the guide face sets up along the direction leanin of impressing of radial seal circle. The utility model discloses in the seal groove of well spigot surface quick guide radial seal ring impressing, guarantee that the radial seal ring installation targets in place, it is more laborsaving to operate.

Description

Liquid heating device

Technical Field

The utility model relates to a household electrical appliances technical field, especially a liquid heating device.

Background

In order to improve the heating efficiency of the instant heating pipe, the prior art provides an internal and external heating liquid heating pipe, which comprises an internal heating pipe and an external heating pipe sleeved outside the internal heating pipe, a heating flow channel for liquid flowing is arranged between the internal heating pipe and the external heating pipe, the two ends of the internal heating pipe and the external heating pipe are hermetically connected through a sealing end cover, in order to ensure the sealing cooperation of the internal heating pipe and the external heating pipe with the sealing end cover, a first sealing groove and a second sealing groove are generally arranged on the inner peripheral side surface of the sealing end cover, a first sealing ring and a second sealing ring are arranged in the first sealing groove and the second sealing groove, the internal heating pipe and the sealing end cover clamp the first sealing ring in the radial direction to realize sealing, and the external heating pipe and the sealing end cover clamp the second sealing. However, in the whole installation process, the first sealing ring and the second sealing ring are firstly installed in the first sealing groove and the second sealing groove, and then the inner heating pipe and the outer heating pipe are inserted, but in the insertion process, the first sealing ring and the second sealing ring are easily moved out of the first sealing groove and the second sealing groove along with the movement of the heating pipe, so that the operation is inconvenient, the two sealing rings are not installed in place, and the sealing effect is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to reach the purpose of providing a liquid heating device, in the seal groove is impressed to the quick guide radial seal circle, guarantee that the radial seal circle installation targets in place, operate more laborsavingly.

In order to achieve the above object, the utility model discloses a following technical scheme a liquid heating device, including external heating pipe, internal heating body and end cover, the external heating pipe box is located the outside of internal heating body and is formed the heating runner that supplies liquid flow, and the periphery side of external heating pipe and/or internal heating body is equipped with sealed face, is equipped with radial seal ring between sealed face and the end cover, and the lateral surface of end cover is equipped with the seal groove that supplies the radial seal ring installation, the notch department of seal groove is equipped with the guide radial seal ring and follows the axial direction guide surface of the seal groove of impressing, and the guide surface sets up along the direction leanin of impressing of radial seal ring.

Further, the maximum radial distance D1 between the guide surface and the sealing surface is greater than the radial width s of the radial seal ring.

Further, the width H1 of the guide surface in the axial direction is less than half the axial width d of the radial seal ring.

Further, the width H1 of the guide surface in the axial direction is more than or equal to 0.2 d.

Further, a radial distance D2 between the outer ring side wall of the seal groove and the seal surface is smaller than a radial width s of the radial seal ring.

Further, the radial distance D2 between the outer ring side wall of the seal groove and the seal surface is 0.5 s-0.7 s.

Further, the depth H2 of the seal groove in the axial direction is greater than the axial width d of the radial seal ring.

Further, the depth H2 of the seal groove in the axial direction is 1.2 d-1.8 d.

Furthermore, the radial sealing ring comprises a first radial sealing ring for realizing sealing between the sealing end cover and the outer heating pipe, the sealing groove comprises a first sealing groove for mounting the first radial sealing ring, a support is sleeved on the outer side of the outer heating pipe, and the support is axially abutted against the sealing end cover and presses the first radial sealing ring into the first sealing groove;

and/or, the inner heating body axially extends out of the outer heating pipe, a gland is arranged at one end of the inner heating body, which extends out of the outer heating pipe, the radial sealing ring comprises a second radial sealing ring used for realizing sealing between the sealing end cover and the inner heating body, the sealing groove comprises a second sealing groove used for installing the second radial sealing ring, and the gland is abutted against the sealing end cover along the axial direction and presses the second radial sealing ring into the second sealing groove.

Further, the inner heating body is a carbon fiber heating pipe, and the outer heating pipe is a nano-film heating pipe; and/or a water inlet or a water outlet communicated with the heating flow channel is arranged on the sealing end cover.

After the technical scheme is adopted, the utility model has the advantages of as follows:

1. on the one hand, the lateral surface of end cover is equipped with the seal groove, and the notch orientation of seal groove is the same with the axial promptly, and radial seal ring can be followed the axial and installed in the seal groove so to radial seal ring can overlap earlier and locate the outside of sealed face, and radial seal ring stretches into in the seal groove along with the removal of sealed face, and radial seal ring can follow the removal of external heating pipe or interior heating member promptly and cooperate with end cover, and the installation is simple and convenient, has also reduced radial seal ring's installation resistance, and the installation is more laborsaving. On the other hand, the notch department of seal groove sets up the spigot surface to the notch edge of seal groove is more smooth and level, has reduced the installation resistance of radial seal circle installation, and the installation is laborsaving, also avoids the notch department of seal groove too sharp and cuts through radial seal circle. Finally, the guide surface is arranged in an inward inclined mode along the pressing-in direction of the radial sealing ring, namely when the radial sealing ring is pressed in and installed to the sealing groove, the radial sealing ring is firstly in contact with one end with the large inner diameter of the guide surface to achieve positioning, then the radial sealing ring slides into the sealing groove along the guide surface, namely the radial sealing ring is quickly guided to be pressed in the sealing groove, the radial sealing ring is guaranteed to be installed in place, and the operation is more labor-saving.

2. The maximum radial distance D1 between the guide surface and the sealing surface is greater than the radial width s of the radial seal ring. The gap between the upstream end of the guide surface and the sealing surface is thus large enough for the radial seal ring to align with the sealing groove, and damage to the radial seal ring due to the upstream edge of the guide surface pressing against the radial seal ring is also avoided.

3. The width H1 of the guide surface in the axial direction is less than half the axial width d of the radial seal ring. Therefore, more than half of the radial sealing ring in the axial direction can be pressed into the sealing groove, the maximum outer ring size part of the radial sealing ring is guaranteed to be clamped into the sealing groove, and the radial sealing ring can be reliably clamped in the radial direction by the aid of the sealing groove and the sealing surface.

4. The width H1 of the guide surface in the axial direction is more than or equal to 0.2 d. The large enough contact area between the guide surface and the radial sealing ring is ensured, the radial sealing ring is guided to be pressed into the sealing groove in the axial direction, and the radial sealing ring is prevented from being scratched due to the fact that the part of the radial sealing ring and the guide surface are extruded and deformed too much.

5. The radial distance D2 between the outer ring side wall of the sealing groove and the sealing surface is smaller than the radial width s of the radial sealing ring. Therefore, the sealing groove and the sealing surface can clamp the radial sealing ring in the radial direction, the radial sealing ring is promoted to deform in the radial direction, and the radial sealing ring is ensured to be tightly attached to the sealing surface and the inner wall of the sealing groove to realize sealing.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of a liquid heating apparatus according to the present invention;

FIG. 2 is an exploded view of the liquid heating apparatus of the present invention;

FIG. 3 is a partially assembled cross-sectional view of the liquid heating apparatus of the present invention;

FIG. 4 is a partially exploded cross-sectional view of the liquid heating apparatus of the present invention;

fig. 5 is an enlarged view of the liquid heating apparatus of the present invention at the sealing position.

Detailed Description

As shown in fig. 1 to 5, the utility model provides a liquid heating device, including external heating pipe 1, internal heating body 2 and end cover 3, the outside of internal heating body 2 is located and heating runner 5 that forms the confession liquid flow is located to 1 cover of external heating pipe, and the periphery side of external heating pipe 1 and/or internal heating body 2 is equipped with sealed face, is equipped with radial seal 4 between sealed face and the end cover 3, and the lateral surface of end cover 3 is equipped with the seal groove 31 that supplies the installation of radial seal 4, the notch department of seal groove 31 is equipped with guide radial seal 4 along the axial seal groove 31's of impressing spigot surface 32, and spigot surface 32 sets up along the direction leanin of impressing of radial seal 4.

On the one hand, the lateral surface of end cover 3 is equipped with seal groove 31, the notch orientation of seal groove 31 is the same with the axial promptly, radial seal 4 can be installed in seal groove 31 along the axial then, thereby radial seal 4 can overlap earlier and locate the outside of sealed face, radial seal 4 stretches into in seal groove 31 along with the removal of sealed face, radial seal 4 can be along with external heating pipe 1 or the removal of internal heating body 2 and end cover 3 cooperation promptly, the installation is simple and convenient, the installation resistance of radial seal 4 has also been reduced, it is more laborsaving to install. On the other hand, notch department of seal groove 31 sets up spigot surface 32 to the notch edge of seal groove 31 is more smooth and level and smooth, has reduced the installation resistance of radial seal 4 installation, and the installation is laborsaving, also avoids notch department of seal groove 31 too sharp and cuts through radial seal 4. Finally, the guide surface 32 is arranged in an inward inclined manner along the pressing-in direction of the radial sealing ring 4, namely when the radial sealing ring 4 is pressed in and installed in the sealing groove 31, the radial sealing ring 4 is firstly contacted with one end with a large inner diameter of the guide surface 32 to realize positioning, and then slides into the sealing groove 31 along the guide surface 32, namely the radial sealing ring 4 is quickly guided to be pressed in the sealing groove 31, so that the radial sealing ring 4 is ensured to be installed in place, and the operation is more labor-saving.

In order to achieve a quick positioning of radial seal ring 4 relative to guide surface 32, guide surface 32 is spaced radially from the sealing surface by a maximum distance D1 that is greater than radial width s of radial seal ring 4. So that the clearance between the upstream end of guide surface 32 and the sealing surface is large enough to align radial seal ring 4 with seal groove 31, and also to avoid damage to radial seal ring 4 by the upstream edge of guide surface 32 pressing against radial seal ring 4.

In this embodiment, to ensure that the radial seal ring 4 is tightly fitted with the seal groove 31, the width H1 of the guide surface 32 in the axial direction is smaller than half of the axial width d of the radial seal ring 4. Therefore, more than half of the radial sealing ring 4 in the axial direction can be pressed into the sealing groove 31, the maximum outer ring size part of the radial sealing ring 4 is guaranteed to be clamped into the sealing groove 31, and the radial sealing ring 4 can be reliably clamped between the sealing groove 31 and the sealing surface in the radial direction.

To ensure the guiding effect of the guide surface 32, the width H1 of the guide surface 32 in the axial direction is greater than or equal to 0.2 d. The large enough contact area between the guide surface 32 and the radial seal ring 4 is ensured, so that the radial seal ring 4 is guided to be pressed into the seal groove 31 in the axial direction, and the radial seal ring 4 is prevented from being scratched due to the overlarge extrusion deformation of the part of the radial seal ring 4 and the guide surface 32.

In this embodiment, the radial distance D2 between the outer ring side wall of the seal groove 31 and the seal surface is smaller than the radial width s of the radial seal ring 4. Therefore, the sealing groove 31 and the sealing surface can clamp the radial sealing ring 4 in the radial direction, the radial sealing ring 4 is promoted to deform in the radial direction, and the radial sealing ring 4 is ensured to be tightly attached to the sealing surface and the inner wall of the sealing groove 31 to realize sealing.

Preferably, in order to ensure the radial seal ring 4 to be convenient to mount and to have a long service life, the radial distance D2 between the outer ring side wall of the seal groove 31 and the seal surface is 0.5s to 0.7 s. When the distance D2 is larger than 0.7s, the radial seal ring 4 has small deformation in the radial direction, the processing precision requirements of the external heating pipe 1, the internal heating body 2 and the seal end cover 3 are high, and the processing difficulty and the processing cost are increased; when the distance D2 is smaller than 0.5s, the radial seal ring 4 deforms too much in the radial direction, which easily causes fatigue damage to the radial seal ring 4, the radial seal ring 4 has a short service life, and the entire installation operation is more laborious.

To ensure that radial seal ring 4 has a sufficiently large deformation space in seal groove 31, the depth H2 of seal groove 31 in the axial direction is greater than the axial width d of radial seal ring 4. Therefore, when the radial sealing ring 4 is clamped by the sealing groove 31 and the sealing surface in the radial direction, the radial sealing ring 4 can deform in the sealing groove 31 along the axial direction, the thermal expansion and the cold contraction of the radial sealing ring 4 are facilitated, the upper stress of the radial sealing ring 4 is released, and the service life is prevented from being influenced by the excessive fatigue.

Specifically, the depth H2 of the seal groove 31 in the axial direction is 1.2d to 1.8d, which not only can ensure the sealing effect and the service life, but also can avoid the oversize of the whole liquid heating device. When the depth H2 is greater than 1.8d, the size of the seal end cover 3 in the axial direction is too large, and when the depth H2 is less than 1.2d, the deformation space reserved for the radial seal ring 4 in the seal groove 31 is small, so that not only is the stress on the radial seal ring 4 incompletely released, but also the radial seal ring 4 is easily deformed to extend out of the notch of the seal groove 31, and the sealing effect is poor.

In this embodiment, in order to realize the sealing between end cover 3 and outer heating tube 1, radial seal 4 is including being used for realizing sealed first radial seal 41 between end cover 3 and the outer heating tube 1, and seal groove 31 is including the first seal groove 311 that is used for installing first radial seal 41, and the outside cover of outer heating tube 1 is equipped with support 6, and support 6 is contradicted and is impressed first radial seal 41 into first seal groove 311 along axial and end cover 3. Therefore, the bracket 6 can realize the fixed installation of the whole liquid heating device, and can press the first radial sealing ring 41 into the first sealing groove 311 along the axial direction without pushing the first radial sealing ring 41 by other auxiliary tools, so that the operation is simple and convenient.

Similarly, in order to realize the sealing between the end cover 3 and the inner heating body 2, the inner heating body 2 axially extends out of the outer heating pipe 1, a gland 7 is arranged at one end of the inner heating body 2 extending out of the outer heating pipe 1, the radial seal ring 4 comprises a second radial seal ring 42 used for realizing the sealing between the end cover 3 and the inner heating body 2, the seal groove 31 comprises a second seal groove 312 used for installing the second radial seal ring 42, and the gland 7 axially abuts against the end cover 3 and presses the second radial seal ring 42 into the second seal groove 312. Meanwhile, the two radial sealing rings 4 are in interference fit between the sealing groove 31 and the sealing surface, so that the installation and the positioning between the sealing end cover 3 and the external heating pipe 1 as well as between the sealing end cover and the internal heating body 2 are facilitated, and the connection of the sealing end cover, the external heating pipe 1 and the internal heating body is integrated.

In this embodiment, the internal heating body 2 is a carbon fiber heating pipe, which has high heating efficiency and long service life, and the external heating pipe 1 is a nano-film heating pipe with low cost.

In this embodiment, the end cover 3 may be provided with a water inlet or a water outlet communicated with the heating flow passage 5, so as to effectively avoid opening on the side wall of the external heating pipe 1, simplify the structure of the external heating pipe 1, and facilitate ensuring the strength of the external heating pipe 1.

In this embodiment, the radial width s and the axial width d of the radial seal ring 4 may be equal, for example, the cross section of the radial seal ring 4 is circular, and in this case, the radial width s and the axial width d of the radial seal ring 4 are both the cross-sectional diameter of the radial seal ring 4. Of course, the radial width s and the axial width d of the radial seal ring 4 may also be unequal.

In this embodiment, the upstream end of the guide surface 32 is an end that is first in contact with the radial seal ring 4 in the axial direction during the process of pressing the radial seal ring 4 into the seal groove 31 in the axial direction.

In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.

Claims

1. The liquid heating device is characterized by comprising an outer heating pipe, an inner heating body and a sealing end cover, wherein the outer heating pipe is sleeved on the outer side of the inner heating body and forms a heating flow channel for liquid to flow, a sealing surface is arranged on the peripheral side surface of the outer heating pipe and/or the inner heating body, a radial sealing ring is arranged between the sealing surface and the sealing end cover, a sealing groove for mounting the radial sealing ring is formed in the outer side surface of the sealing end cover, a guide surface for guiding the radial sealing ring to be pressed into the sealing groove along the axial direction is arranged at the notch of the sealing groove, and the guide surface is arranged in an inwards inclined.

2. Liquid heating device as claimed in claim 1, characterized in that the maximum radial spacing D1 of the guide surfaces from the sealing surfaces is greater than the radial width s of the radial sealing ring.

3. Liquid heating device according to claim 1, wherein the width H1 of the guide surface in the axial direction is less than half the axial width d of the radial sealing ring.

4. A liquid heating device as claimed in claim 3, wherein the width H1 of the guide surface in the axial direction is 0.2d or more.

5. The liquid heating apparatus as claimed in claim 1, wherein a radial distance D2 between the outer ring side wall of the seal groove and the seal surface is smaller than a radial width s of the radial seal ring.

6. The liquid heating apparatus as claimed in claim 5, wherein a radial distance D2 between the outer ring side wall of the seal groove and the seal surface is 0.5s to 0.7 s.

7. The liquid heating apparatus according to claim 1, wherein a depth H2 of the seal groove in the axial direction is larger than an axial width d of the radial seal ring.

8. The liquid heating apparatus according to claim 7, wherein the depth H2 of the seal groove in the axial direction is 1.2d to 1.8 d.

9. The liquid heating apparatus according to any one of claims 1 to 8, wherein the radial seal ring comprises a first radial seal ring for sealing between the seal cover and the outer heating pipe, the seal groove comprises a first seal groove for mounting the first radial seal ring, a support is sleeved on the outer side of the outer heating pipe, and the support axially abuts against the seal cover and presses the first radial seal ring into the first seal groove;

10. The liquid heating apparatus according to any one of claims 1 to 8, wherein the inner heating body is a carbon fiber heating tube, and the outer heating tube is a nano-film heating tube; and/or a water inlet or a water outlet communicated with the heating flow channel is arranged on the sealing end cover.