Steam generator
By using an I-shaped silicone sealing ring in the steam generator to form a negative pressure zone in the steam tank, the problem that traditional steam generators cannot achieve air pressure equalization inside and outside the steam tank is solved, simplifying the product structure and enhancing the sealing property.
Patent Information
- Application Number
- CN202420428967.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-05
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-05
AI Technical Summary
Because the ordinary sealing ring cannot form a negative pressure zone in the steam tank, the external air cannot enter and the pressure equalization between the inside and outside the steam tank is impossible. An additional gas replenishment mechanism is needed, which affects the simplification of the product structure.
I-shaped silicone sealing ring is adopted. When the inner ring surface forms a negative pressure zone in the steam box, the connection gap between the steam box and the inner cover can be opened, allowing external air to enter, achieving balance between the air pressure inside and outside the steam box, and canceling the gas replenishment mechanism. demand.
The air pressure balance between the inside and outside the steam tank is achieved, the product structure is simplified, the additional gas replenishment mechanism is avoided, and the sealing and convenience of use is enhanced.
Smart Images
Figure CN222164746U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a structural improvement of a steam generator. Background Art
[0002] Conventional steam generators use common sealing rings to seal the gap between the steam box and the box cover. Since common sealing rings only have a closing function but no opening function, it is impossible to allow outside air to enter the steam box from the gap between the steam box and the box cover when a negative pressure area is formed in the steam box to achieve pressure balance inside and outside the steam box. To achieve the above function, conventional steam generators are equipped with an additional air replenishment mechanism, which is obviously not conducive to simplifying the product structure. Utility Model Content
[0003] The utility model discloses a steam generator which can replenish air through a sealing ring.
[0004] To this end, the utility model adopts the following technical solutions:
[0005] A steam generator comprises a connecting plate, a steam box, an inner cover and a sealing ring. The connecting plate is provided with a steam outlet. The steam box is a top-opening box body and an electric heating pipe is fixedly arranged at the bottom. The steam box is fixedly arranged below the connecting plate and its top opening is butted against the steam outlet. The inner cover is fixedly arranged at the top of the connecting plate. The sealing ring is arranged between the steam box, the inner cover and the connecting plate to close the connection gap between the three.
[0006] The inner cover includes a cover surface and an outer cover ring and an inner cover ring which are concentrically arranged at the bottom of the cover surface. The cover surface covers the top of the outer ring to close the steam outlet and is provided with a steam exhaust hole connected to the steam outlet. A steam exhaust one-way valve is provided in the steam exhaust hole. The outer cover ring is arranged inside the outer ring and is locked and fixed to the connecting plate by a screw-on device to fix the inner cover to the cover opening. The inner cover ring is arranged inside the inner ring. The longitudinal cross-section of the inner cover ring is V-shaped and its outer peripheral wall is arc-shaped and convexly inclined inwardly and downwardly.
[0007] The sealing ring is an I-shaped silicone ring, including an integrally formed bottom ring, a neck ring and a top ring. The neck ring is extended upward along the ring opening of the bottom ring, and the top ring is arranged at the top of the neck ring. The top ring is provided with an outer ring surface exposed to the outside of the neck ring and an inner ring surface exposed to the inside of the neck ring. The inner ring surface gradually becomes thinner from the outside to the inside and tilts inward and downward; the bottom ring is arranged between the top of the steam box and the connecting plate, the neck ring is arranged in the steam outlet, and the inner ring surface is sleeved on the outer periphery of the inner cover ring and fits tightly with the inner cover ring.
[0008] As a preferred embodiment, a connecting ring is sleeved on the outer periphery of the steam box, and the connecting ring supports the first outer folding ring arranged on the top of the steam box. A second outer folding ring is arranged at the bottom of the connecting ring, and the second outer folding ring is fixed to the connecting plate by screws to fix the steam box to the bottom surface of the connecting plate.
[0009] As a preferred solution, the top of the connecting plate outside the steam outlet is provided with an inner ring and an outer ring concentric with the steam outlet, and the inner ring is lower than the outer ring, so that the two together form a cover with a lower inner ring and a higher outer ring.
[0010] As a preferred solution, an outer cover is provided on the top of the cover opening, and the outer cover is screwed to the outer thread provided on the outer wall of the outer ring through the internal thread provided on the bottom cover cavity, so as to be fixedly connected to the connecting plate and close the inner cover inside; a second steam hole is provided on the top of the outer cover which is connected to the exhaust hole.
[0011] As a preferred embodiment, the inner cover is arranged inside the cover opening, and the cover surface of the inner cover is closed and covered on the top of the outer ring. The outer cover ring is located inside the outer ring and is locked with the first screw buckle provided on its outer wall and the second screw buckle provided on the inner wall of the outer ring. The inner cover ring is located inside the inner ring.
[0012] As a preferred solution, the inner peripheral wall of the inner cover ring is upright, and a pressure relief hole is provided on the cover surface above it, a pressure relief valve is provided in the pressure relief hole, and a first steam hole connected to the pressure relief hole is provided on the outer cover.
[0013] As a preferred solution, a bottom ring which is concentric with the steam outlet and larger than the outer ring is provided on the bottom surface of the connecting plate outside the steam outlet, and the top opening of the steam box is inserted into the bottom ring.
[0014] The utility model provides an inner ring surface on the sealing ring, and the inner ring surface can open the connection gap between the steam box and the inner cover when a negative pressure area is formed in the steam box, so that the outside air can enter the steam box from the gap between the outer cover and the inner cover and the gap between the inner cover and the steam box, so that the air pressure inside and outside the steam box is balanced, so there is no need to set up an air replenishing mechanism separately, which is conducive to simplifying the product structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;
[0016] Figure 2 It is an exploded view of the overall structure of the above embodiment;
[0017] Figure 3 It is a cross-sectional view of the overall structure of the above embodiment;
[0018] Figure 4 for Figure 3 Exploded diagram. DETAILED DESCRIPTION
[0019] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.
[0020] Reference Figure 1-4 :
[0021] A steam generator comprises a connecting plate 1, a steam box 2, a connecting ring 3, an inner cover 4, a sealing ring 5 and an outer cover 6.
[0022] A steam outlet 1.1 is provided on the connecting plate 1. An inner ring 1.21 and an outer ring 1.22 are provided on the top of the connecting plate 1 outside the steam outlet 1.1, which are concentric with the steam outlet 1.1. The inner ring 1.21 is lower than the outer ring 1.22, so that the two together form a cover 1.2 with a lower inner ring and a higher outer ring. A bottom ring 1.3 is provided on the bottom surface of the connecting plate outside the steam outlet 1.1, which is concentric with the steam outlet 1.1 and larger than the outer ring 1.22.
[0023] The steam box 2 is a top-opening box body and an electric heating pipe 2.1 is fixedly arranged at the bottom thereof. The steam box 2 is arranged below the connecting plate 1 and its top opening is inserted into the bottom ring 1.3 to connect with the steam outlet 1.1.
[0024] The connecting ring 3 is sleeved on the periphery of the steam box 2 and supports the first outer folding ring 2.2 arranged on the top of the steam box 2. A second outer folding ring 3.1 is arranged at the bottom of the connecting ring 3. The second outer folding ring 3.1 is fixed to the connecting plate 1 by screws to fix the steam box 2 to the bottom surface of the connecting plate 1.
[0025] The inner cover 4 is arranged inside the cover opening 1.2, and the inner cover 4 includes a cover surface 4.1 and an outer cover ring 4.2 and an inner cover ring 4.3 which are concentrically arranged at the bottom of the cover surface 4.1. The cover surface 4.1 covers the top of the outer ring 1.22 to close the steam outlet 1.1. The outer cover ring 4.2 is arranged inside the outer ring 1.22 and is locked with a first screw buckle 4.21 arranged on its outer wall and a second screw buckle arranged on the inner wall of the outer ring 1.22 to lock the inner cover 4.1. The inner cover ring 4.3 is fixed to the cover opening 1.2; the inner cover ring 4.3 is arranged inside the inner ring 1.21, and the longitudinal section of the inner cover ring 4.3 is V-shaped, and its inner peripheral wall is upright, and the outer peripheral wall is arc-shaped and convexly inclined inward and downward. The cover surface 4.1 above the inner cover ring 4.3 is provided with a pressure relief hole 4.11 and a steam exhaust hole 4.12 connected to the steam box 2, and a pressure relief valve 7 is arranged in the pressure relief hole 4.11, and a steam exhaust one-way valve 8 is connected to the steam exhaust hole 4.12.
[0026] The sealing ring 5 is arranged between the steam box 2, the inner cover 4 and the connecting plate 1 to close the connection gap between the three. The sealing ring 5 is an I-shaped silicone ring, including an integrally formed bottom ring 5.1, a neck ring 5.2 and a top ring 5.3. The bottom surface outer edge of the bottom ring 5.1 is provided with a first clamping ring 5.11, the neck ring 5.2 is extended upward along the ring opening of the bottom ring 5.1, and the top ring 5.3 is arranged on the top of the neck ring 5.2. The top ring 5.3 is provided with an outer ring surface 5.31 exposed to the outside of the neck ring 5.2 and an inner ring surface 5.32 exposed to the inside of the neck ring 5.2. The bottom surface outer edge of the outer ring surface 5.31 is provided with a second clamping ring 5.311, and a groove ring 5.4 is separated between the second clamping ring 5.311 and the neck ring 5.2, and the inner ring surface 5.32 gradually becomes thinner from the outside to the inside and tilts inward and downward.
[0027] The bottom ring 5.1 is arranged inside the bottom ring 1.3 on the inner side of the steam box 2, the first clamping ring 5.11 is arranged between the bottom ring 1.3 and the first outer folding ring 2.2, the neck ring 5.2 is arranged in the steam outlet 1.1, the top ring 5.3 is arranged between the inner cover ring 4.3 and the outer ring 1.22, the groove ring 5.4 is sleeved on the inner ring 1.21, the second clamping ring 5.311 is arranged between the inner ring 1.21 and the outer ring 1.22, and the inner ring surface 5.32 is sleeved on the outer periphery of the inner cover ring 4.3 and fits tightly with the inner cover ring 4.3.
[0028] The outer cover 6 is covered on the top of the cover opening 1.2, and is screwed to the outer thread provided on the outer wall of the outer ring 1.22 through the inner thread provided on the cover cavity on its bottom surface, so as to be fixedly connected to the connecting plate 1.1 and seal the inner cover 4 inside; the top of the outer cover 6 is provided with a first steam hole 6.1 connected to the pressure relief hole 4.11 and a second steam hole 6.2 connected to the exhaust hole 4.12.
[0029] During operation, the electric heating tube 2.1 is energized to heat the water in the steam box 2. The steam formed by the water can gradually increase the air pressure in the box. The higher the air pressure in the box, the tighter the inner ring surface 5.32 on the sealing ring 5 presses the inner cover ring 5.21 on the inner cover 4.3, and the stronger the sealing performance.
[0030] When idle, the water in the steam box 2 will gradually cool down, resulting in the formation of a low-pressure area in the steam box 2 that is lower than the external air pressure. At this time, the external air can break through the inner ring surface 4.32 along the connection gap between the outer cover 6 and the inner cover 4 and enter the steam box 2, so that the air pressure in the steam box 2 is balanced with the external air pressure.
[0031] The utility model can be used to prevent the air at the steam-using end from returning to the steam box 2 along the steam outlet one-way valve 8.
Claims
1. A steam generator, comprising a connecting plate, a steam box, an inner cover and a sealing ring, wherein a steam outlet is arranged on the connecting plate, the steam box is a top-opening box body and an electric heating pipe is fixedly arranged at the bottom thereof, the steam box is fixedly arranged below the connecting plate and its top opening is butted against the steam outlet, the inner cover is fixedly arranged at the top of the connecting plate, and the sealing ring is arranged between the steam box, the inner cover and the connecting plate to seal the connection gap between the three. Features: The inner cover comprises a cover surface and an outer cover ring and an inner cover ring which are concentrically arranged at the bottom of the cover surface. The cover surface covers the top of the outer ring to close the steam outlet and is provided with a steam exhaust hole connected to the steam outlet. A steam exhaust check valve is provided in the steam exhaust hole. The outer cover ring is arranged inside the outer ring and is locked and fixed to the connecting plate by a screw-fastening device to fix the inner cover to the cover opening. The inner cover ring is arranged inside the inner ring. The longitudinal section of the inner cover ring is V-shaped and its outer peripheral wall is arc-shaped and convexly inclined inwardly and downwardly. The sealing ring is an I-shaped silicone ring, including an integrally formed bottom ring, a neck ring and a top ring. The neck ring is extended upward along the ring opening of the bottom ring, and the top ring is arranged at the top of the neck ring. The top ring is provided with an outer ring surface exposed to the outside of the neck ring and an inner ring surface exposed to the inside of the neck ring. The inner ring surface gradually becomes thinner from the outside to the inside and tilts inward and downward; the bottom ring is arranged between the top of the steam box and the connecting plate, the neck ring is arranged in the steam outlet, and the inner ring surface is sleeved on the outer periphery of the inner cover ring and fits tightly with the inner cover ring.
2. A steam generator according to claim 1, Features: A connecting ring is sleeved on the periphery of the steam box, and the connecting ring supports the first outer folding ring arranged on the top of the steam box. A second outer folding ring is arranged at the bottom of the connecting ring, and the second outer folding ring is fixed to the connecting plate by screws to fix the steam box to the bottom surface of the connecting plate.
3. A steam generator according to claim 1, Features: An inner ring and an outer ring concentric with the steam outlet are arranged on the top of the connection plate outside the steam outlet, and the inner ring is lower than the outer ring, so that the two together form a cover with a lower inner ring and a higher outer ring.
4. A steam generator according to claim 3, Features: An outer cover is provided on the top of the cover opening, and the outer cover is screwed to the outer thread provided on the outer wall of the outer ring through the inner thread provided on the bottom cover cavity, so as to be fixedly connected to the connecting plate and seal the inner cover inside; a second steam hole is provided on the top of the outer cover to connect with the exhaust hole.
5. A steam generator according to claim 3, Features: The inner cover is arranged inside the cover opening, and the cover surface of the inner cover is closed and covered on the top of the outer ring. The outer cover ring is located inside the outer ring and is locked with the first screw buckle provided on its outer wall and the second screw buckle provided on the inner wall of the outer ring. The inner cover ring is located inside the inner ring.
6. A steam generator according to claim 3, Features: A bottom ring which is concentric with the steam outlet and larger than the outer ring is arranged on the bottom surface of the connecting plate outside the steam outlet, and the top opening of the steam box is inserted into the bottom ring.
7. A steam generator according to claim 1, Features: A pressure relief hole communicated with the steam box is also arranged on the cover surface of the inner cover, and a pressure relief valve is arranged in the pressure relief hole.