Atomizer and condensation type gas water heater

Abstract

The utility model belongs to the technical field of atomization, and particularly discloses an atomizer and a condensation type gas water heater, the atomizer comprises a shell, a piezoelectric ceramic piece and a flexible sealing sleeve, the shell is provided with atomization holes, the piezoelectric ceramic piece is provided with an acid-resistant protection piece, and the piezoelectric ceramic piece can transmit high-frequency vibration to the protection piece; the flexible sealing sleeve is arranged in the shell, one end of an opening of the flexible sealing sleeve is connected to the periphery of the atomization hole in a sealed mode, the outer periphery of the protection piece and the inner side wall of the flexible sealing sleeve form sealing, one face of the protection piece faces the atomization hole, and the other face of the protection piece faces the piezoelectric ceramic piece. The condensation type gas water heater adopts the atomizer, so that the piezoelectric ceramic piece in the atomizer can be prevented from being corroded in acidic condensate water in the condensation type gas water heater, the atomization effect is guaranteed, and the phenomena that the atomization effect is reduced or atomization fails and the like due to damage of the piezoelectric ceramic piece are reduced as much as possible.

Description

Technical Field

[0001] This utility model relates to the field of atomization technology, and in particular to an atomizer and a condensing gas water heater. Background Technology

[0002] One of the core components of an atomizer is a piezoelectric ceramic plate. After receiving a high-frequency electrical signal, the piezoelectric ceramic plate can vibrate mechanically at the same frequency, thereby transferring the high-frequency vibration energy to the liquid. The high-frequency vibration of the liquid produces a water column, and the surface of the water column continuously absorbs energy, which breaks the surface tension between the liquids and forms a water mist, thus achieving liquid atomization.

[0003] Currently, atomizers are also used in condensing gas water heaters. In condensing gas water heaters, air and gas mix and burn to form flue gas. The flue gas flows through the main heat exchanger and then exchanges heat with the condensing heat exchanger. After heat exchange, the flue gas is discharged. At this time, the condensate produced by the condensing heat exchanger enters the atomization chamber where the atomizer is located and is atomized. The atomized water mist is discharged with the flue gas. The flue gas contains components such as sulfur, nitrogen, and carbon. The flue gas comes into direct contact with the condensate, which causes the condensate to contain sulfate, nitrate, and carbonate ions. The condensate becomes a relatively acidic liquid with a pH of about 2.5-4. The atomizer is directly immersed in this condensate. Over time, the piezoelectric ceramic plates of the atomizer are easily corroded, affecting the atomization effect and even causing atomization failure, thus increasing the maintenance cost of condensing gas water heaters. Utility Model Content

[0004] One of the technical problems solved by this utility model is to provide an atomizer that avoids corrosion of the piezoelectric ceramic sheet due to an acidic environment;

[0005] The second technical problem solved by this utility model is to reduce the maintenance cost of condensing gas water heaters.

[0006] The above-mentioned technical problems are solved by the following technical solutions:

[0007] An atomizer, the atomizer comprising:

[0008] The housing is provided with atomizing holes;

[0009] A piezoelectric ceramic sheet, wherein an acid-resistant protective sheet is disposed on the piezoelectric ceramic sheet, and the piezoelectric ceramic sheet is capable of transmitting high-frequency vibrations to the protective sheet;

[0010] A flexible sealing sleeve is disposed inside the housing. One end of the opening of the flexible sealing sleeve is sealed to the outer periphery of the atomizing hole. The piezoelectric ceramic sheet is disposed inside the flexible sealing sleeve. The outer periphery of the protective sheet forms a seal with the inner sidewall of the flexible sealing sleeve. One side of the protective sheet faces the atomizing hole, and the other side faces the piezoelectric ceramic sheet.

[0011] The atomizer described in this utility model has the following advantages compared with the prior art:

[0012] A protective plate is installed on the piezoelectric ceramic sheet, with the piezoelectric ceramic sheet located below it. The protective plate is fixed by a flexible sealing sleeve, which seals the atomizing hole and the outer periphery of the protective plate. When the atomizer is immersed in acidic condensate, the condensate directly contacts the protective plate. The piezoelectric ceramic sheet transmits high-frequency vibrations to the protective plate, which in turn transmits them to the condensate for atomization. During this process, the condensate does not come into contact with the piezoelectric ceramic sheet, thus protecting it from corrosion by the acidic condensate and ensuring effective atomization. Furthermore, the outer periphery of the protective plate forms a seal with the inner wall of the flexible sealing sleeve. The flexible sealing sleeve is flexible and deformable, supporting the vibration of the protective plate. The protective plate receives the high-frequency vibrations of the piezoelectric ceramic sheet and can atomize normally. The flexible sealing sleeve also seals the atomizing hole and the outer periphery of the protective plate, preventing acidic liquid from entering the housing through the atomizing hole.

[0013] In some embodiments, the protective sheet is a glass sheet, which is bonded to the piezoelectric ceramic sheet.

[0014] In some embodiments, an adhesive layer is provided between the glass sheet and the piezoelectric ceramic sheet, and the temperature resistance range of the adhesive layer is 100℃-300℃.

[0015] In some embodiments, the glass sheet is a quartz glass sheet, a microcrystalline glass sheet, or a borosilicate glass sheet; and / or, the thickness of the glass sheet is 1mm-4mm.

[0016] In some embodiments, the inner wall of the flexible sealing sleeve is provided with a groove, and the periphery of the piezoelectric ceramic sheet and / or the periphery of the protective sheet is embedded in the groove.

[0017] In some embodiments, the housing has a raised edge around the edge of the atomizing hole, the raised edge extending into the housing, and the flexible sealing sleeve is fitted onto the raised edge.

[0018] In some embodiments, there is a gap between the protrusion and the protective sheet.

[0019] In some embodiments, the interior of the housing is filled with thermosetting epoxy resin.

[0020] In some embodiments, the atomizer is further provided with a pressure plate, the inner wall of the housing is provided with a connecting post, the pressure plate is fixed on the connecting post, and the flexible sealing sleeve is clamped and fixed between the pressure plate and the housing wall.

[0021] In some embodiments, the pressure plate is detachably connected to the connecting post.

[0022] This application also provides a condensing gas water heater, which includes a condensing chamber and an atomizing chamber connected to each other. A condensing heat exchanger is provided in the condensing chamber, and an atomizer as described above is installed in the atomizing chamber.

[0023] Compared with the prior art, the condensing gas water heater of this utility model has the following advantages:

[0024] By adopting the atomizer with the above structure, the occurrence of reduced atomization effect or atomization failure due to damage to the piezoelectric ceramic plate can be reduced, thereby lowering the maintenance cost of condensing gas water heaters. Attached Figure Description

[0025] Figure 1 Top view of the atomizer provided by this utility model;

[0026] Figure 2 A cross-sectional view of the atomizer provided by this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the condensing heat exchange device in the condensing gas water heater provided by this utility model.

[0029] Label Explanation:

[0030] 10. Atomizer;

[0031] 1. Housing; 11. Atomizing hole; 12. Protruding edge; 13. Connecting post;

[0032] 2. Piezoelectric ceramic sheet;

[0033] 3. Protective film;

[0034] 4. Flexible sealing sleeve; 41. Groove; 42. Protrusion;

[0035] 5. Adhesive layer;

[0036] 6. Tableting;

[0037] 7. Sealing wall;

[0038] 20. Condensation chamber;

[0039] 30. Atomizing chamber;

[0040] 40. Condensing heat exchanger. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] like Figures 1 to 4 As shown, this application provides an atomizer 10, which is applied to a condensing gas water heater and can be immersed in the condensate water of the condensing gas water heater. The atomizer 10 includes a housing 1, a piezoelectric ceramic plate 2, and a flexible sealing sleeve 4. The housing 1 is provided with an atomizing hole 11. An acid-resistant protective plate 3 is provided on the piezoelectric ceramic plate 2. The piezoelectric ceramic plate 2 can transmit high-frequency vibration to the protective plate 3. The flexible sealing sleeve 4 is disposed inside the housing 1. One end of the opening of the flexible sealing sleeve 4 is sealed to the outer periphery of the atomizing hole 11. The piezoelectric ceramic plate 2 is disposed inside the flexible sealing sleeve 4. The outer periphery of the protective plate 3 forms a seal with the inner sidewall of the flexible sealing sleeve 4. One side of the protective plate 3 faces the atomizing hole 11, and the other side faces the piezoelectric ceramic plate 2.

[0045] A protective plate 3 is set on the piezoelectric ceramic plate 2, with the piezoelectric ceramic plate 2 located below the protective plate 3. The protective plate 3 is fixed by a flexible sealing sleeve 4. The flexible sealing sleeve 4 can seal the atomizing hole 11 and the outer periphery of the protective plate 3. Thus, when the atomizer 10 is immersed in condensate in an acidic environment, the condensate directly contacts the protective plate 3. The piezoelectric ceramic plate 2 can transmit high-frequency vibration to the protective plate 3, and then to the condensate for atomization. During this period, the condensate will not come into contact with the piezoelectric ceramic plate 2, thus protecting the piezoelectric ceramic plate 2 from corrosion by the acidic condensate and ensuring the atomization effect. Moreover, the outer periphery of the protective plate 3 forms a seal with the inner wall of the flexible sealing sleeve 4. The flexible sealing sleeve 4 is flexible and deformable, which can support the vibration of the protective plate. The protective plate 3 can receive the high-frequency vibration of the piezoelectric ceramic plate 2 and can atomize normally. In addition, the flexible sealing sleeve 4 can also seal the atomizing hole 11 and the outer periphery of the protective plate 3, preventing acidic liquid from seeping into the housing 1 through the atomizing hole 11 and the outer periphery of the protective plate 3.

[0046] It should be noted that the atomizer 10 also includes components such as a control board, connecting wires, an ultrasonic generator, and a heat sink. These components are commonly used in the atomizer 10 in the prior art, and their specific structures will not be described in detail here.

[0047] like Figure 1 As shown, in some embodiments, the number of atomizing holes 11 can be set to multiple, and the corresponding piezoelectric ceramic sheets 2 are also set to multiple, thereby improving atomization efficiency. In the current embodiment, two atomizing holes 11 are set, and the two atomizing holes 11 are set at intervals.

[0048] In some embodiments, the protective sheet 3 is a glass sheet, which is bonded to the piezoelectric ceramic sheet 2. This stable bonding allows high-frequency vibrations to be transmitted from the piezoelectric ceramic sheet 2 to the glass sheet, and then stably conducted to the condensate water for atomization. Exemplarily, the glass sheet can be, but is not limited to, a quartz glass sheet, a microcrystalline glass sheet, or a borosilicate glass sheet. These glass sheets not only have acid resistance but also high temperature resistance and thermal conductivity, which is beneficial for the glass sheet to heat up during vibration and for heat dissipation during vibration. In this embodiment, the protective sheet 3 is a quartz glass sheet. Furthermore, the thickness of the glass sheet is 1mm-4mm to avoid breakage during vibration due to excessive thinness, while also avoiding excessive thickness, which would hinder vibration transmission. In this embodiment, the thickness of the glass sheet is 1.7mm.

[0049] In some embodiments, an adhesive layer 5 is provided between the glass sheet and the piezoelectric ceramic sheet 2, and the temperature resistance range of the adhesive layer 5 is 100℃-300℃. In the current embodiment, the adhesive layer 5 is formed of thermosetting epoxy resin, thereby stably bonding the glass sheet and the piezoelectric ceramic sheet 2 together, enabling the piezoelectric ceramic sheet 2 and the glass sheet to vibrate at the same frequency and promptly transmit the vibration energy to the glass sheet, ensuring stable atomization; furthermore, the adhesive layer 5 can also transfer the heat generated by the piezoelectric ceramic sheet 2 during operation to the protective sheet 3, facilitating heat dissipation.

[0050] like Figure 2 and Figure 3 As shown, in some embodiments, to fix the piezoelectric ceramic sheet 2 and the protective sheet 3, the atomizer 10 further includes a pressing plate 6. A flexible sealing sleeve 4 is disposed inside the housing 1. The piezoelectric ceramic sheet 2 and the protective sheet 3 are fixed to the inner wall of the flexible sealing sleeve 4. The pressing plate 6 is fixed to the housing 1, thereby clamping and fixing the flexible sealing sleeve 4 between the pressing plate 6 and the housing wall of the housing 1, so that the flexible sealing sleeve 4 covers the atomization hole 11. The flexible sealing sleeve 4 fixes the piezoelectric ceramic sheet 2 and causes the protective sheet 3 on the piezoelectric ceramic sheet 2 to close the atomization hole 11. Accordingly, the flexible sealing sleeve 4 is flexible to support the vibration of the piezoelectric ceramic sheet 2 and the protective sheet 3. Specifically, a groove 41 is provided on the inner wall of the flexible sealing sleeve 4. The groove 41 surrounds the circumference of the flexible sealing sleeve 4. The periphery of the piezoelectric ceramic sheet 2 and the periphery of the protective sheet 3 are sealed and embedded in the groove 41, thereby stably fixing the piezoelectric ceramic sheet 2 and the protective sheet 3. In the current embodiment, the piezoelectric ceramic sheet 2 and the protective sheet 3 are interference-fitted into the groove 41. Specifically, the inner wall of the flexible sealing sleeve 4 is provided with two protrusions 42 spaced apart along the axial direction of the flexible sealing sleeve 4, and the groove 41 is formed between the two protrusions 42. To ensure stability, the two protrusions 42 are arranged circumferentially along the inner wall of the flexible sealing sleeve 4.

[0051] In some alternative embodiments, the size of the piezoelectric ceramic sheet 2 is larger than the size of the protective sheet 3, or the size of the piezoelectric ceramic sheet 2 is smaller than the size of the protective sheet 3, so that after the protective sheet 3 is bonded to the piezoelectric ceramic sheet 2, a limiting step is formed at the periphery of the piezoelectric ceramic sheet 2 or the periphery of the protective sheet 3; thus, during installation, only the periphery of the piezoelectric ceramic sheet 2 or the periphery of the protective sheet 3 needs to be embedded in the above-mentioned groove 41 for fixation; when only the periphery of the piezoelectric ceramic sheet 2 is embedded in the above-mentioned groove 41, the part of the flexible sealing sleeve 4 located outside the groove 41 is in close contact with the periphery of the sealing protective sheet 3 to prevent leakage.

[0052] For example, the flexible sealing sleeve 4 is made of fluorosilicone, forming a fluorosilicone sealing sleeve, which gives the flexible sealing sleeve 4 strong acid resistance, extending its service life. Furthermore, the material also has a certain degree of flexibility, capable of supporting the vibration of the piezoelectric ceramic sheet 2 and the protective sheet 3; it can also provide a certain sealing effect when the pressure plate 6 fixes it to the shell wall. In addition, in this embodiment, placing the piezoelectric ceramic sheet 2 and the protective sheet 3 on the flexible sealing sleeve 4 can minimize direct contact between the piezoelectric ceramic sheet 2 and the protective sheet 3 and the harder shell 1, thereby reducing the impact of the harder shell 1 on them during vibration and extending the service life of the piezoelectric ceramic sheet 2 and the protective sheet 3.

[0053] like Figure 2 and Figure 3 As shown, to further stabilize the flexible sealing sleeve 4 and minimize its displacement during the vibration of the piezoelectric ceramic sheet 2, thereby reducing the displacement of the protective sheet 3 and preventing acidic condensate from entering the flexible sealing sleeve 4, in some embodiments, the housing 1 has a raised edge 12 around the edge of the atomizing hole 11. The raised edge 12 extends into the housing 1, and the flexible sealing sleeve 4 is fitted onto the raised edge 12, thereby fixing the flexible sealing sleeve 4 in place and maintaining its fixed position. Exemplarily, the raised edge 12 is arranged circumferentially along the edge of the atomizing hole 11, thereby further improving the stability of the support.

[0054] like Figure 2 and Figure 3 As shown, there is a gap between the protruding edge 12 and the protective plate 3. The size of the gap is not specifically limited. The gap is set so that the protective plate 3 minimizes contact with the protruding edge 12 during vibration, thereby reducing wear on the protective plate 3 and extending its service life.

[0055] In some embodiments, the pressure plate 6 is detachably connected to the housing 1, thereby facilitating assembly. Specifically, the housing 1 has a connecting hole, and the pressure plate 6 has a through hole. A locking member can pass through the through hole and be fixed in the connecting hole to fix the pressure plate 6 to the housing 1. Exemplarily, the connecting hole is a screw hole, and the locking member can be, but is not limited to, a bolt or screw. Further, to improve stability, the housing 1 is provided with a connecting post 13, and a screw hole is provided at the end of the connecting post 13, allowing the locking member to increase the screw-in length to improve the stability of the fixation. In the current embodiment, multiple connecting holes are provided, and correspondingly multiple through holes are also provided on the pressure plate 6, thereby improving stability through multiple locking points. Exemplarily, two connecting posts 13 are arranged opposite each other, located on opposite sides of the atomizing hole 11, to stabilize the flexible sealing sleeve 4. In some alternative embodiments, the connecting post 13 can be annular, with the connecting post 13 circumferentially surrounding the atomizing hole 11, and multiple screw holes can be circumferentially spaced on the connecting post 13 to increase the stability of the connection.

[0056] like Figure 3 As shown, in some embodiments, the end of the flexible sealing sleeve 4 furthest from the atomizing hole 11 is provided with a sealing wall 7 for sealing. This sealing wall 7 increases the contact area with the pressure plate 6 and prevents external debris from entering, reducing interference with the piezoelectric ceramic sheet 2. Furthermore, for ease of wiring, both the sealing wall 7 and the pressure plate 6 are provided with wiring holes. In one embodiment, for example, the sealing wall 7 and the flexible sealing sleeve 4 are integrally formed. In another alternative embodiment, after the piezoelectric ceramic sheet 2 and the pressure plate 6 are installed, thermosetting epoxy resin can be injected into the housing 1 to further fix the pressure plate 6 and the flexible sealing sleeve 4. Therefore, the sealing wall 7 can also be formed by injecting thermosetting epoxy resin through the wiring holes of the pressure plate 6. In some embodiments, a gap can be provided between the sealing wall 7 and the piezoelectric ceramic sheet 2 to reduce contact between the piezoelectric ceramic sheet 2 and the sealing wall 7, thereby reducing the possibility of damage to the piezoelectric ceramic sheet 2.

[0057] This application also provides a condensing gas water heater, which, compared to conventional gas water heaters, adds features such as... Figure 4The condensing heat exchange device shown includes a condensing shell, which has a condensing chamber 20 and an atomizing chamber 30 that are interconnected. The atomizing chamber 30 is located on one side of the condensing chamber 20 and is connected to the condensing chamber 20 through a water passage. A condensing heat exchanger 40 is located in the condensing chamber 20, and an atomizer 10 is located in the atomizing chamber 30. The condensing gas water heater in the current embodiment uses the aforementioned atomizer 10, which can prevent the piezoelectric ceramic plate 2 in the atomizer 10 from being corroded in the acidic condensate in the condensing gas water heater, thereby ensuring the atomization effect and minimizing the occurrence of phenomena such as reduced atomization effect or atomization failure due to damage to the piezoelectric ceramic plate 2, thus reducing the maintenance cost of the condensing gas water heater.

[0058] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0059] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An atomizer, characterized in that, The atomizer (10) includes: The housing (1) is provided with atomizing holes (11); A piezoelectric ceramic sheet (2) is provided with an acid-resistant protective sheet (3), and the piezoelectric ceramic sheet (2) can transmit high-frequency vibrations to the protective sheet (3); A flexible sealing sleeve (4) is disposed inside the housing (1). One end of the opening of the flexible sealing sleeve (4) is sealed to the outer periphery of the atomizing hole (11). The piezoelectric ceramic sheet (2) is disposed inside the flexible sealing sleeve (4). The outer periphery of the protective sheet (3) forms a seal with the inner wall of the flexible sealing sleeve (4). One side of the protective sheet (3) faces the atomizing hole (11), and the other side faces the piezoelectric ceramic sheet (2).

2. The atomizer according to claim 1, characterized in that, The protective sheet (3) is a glass sheet, which is bonded to the piezoelectric ceramic sheet (2).

3. The atomizer according to claim 2, characterized in that, An adhesive layer (5) is provided between the glass sheet and the piezoelectric ceramic sheet (2), and the temperature resistance range of the adhesive layer (5) is 100℃-300℃.

4. The atomizer according to claim 2, characterized in that, The glass sheet is a quartz glass sheet, a microcrystalline glass sheet, or a borosilicate glass sheet; and / or, the thickness of the glass sheet is 1mm-4mm.

5. The atomizer according to claim 1, characterized in that, The inner wall of the flexible sealing sleeve (4) is provided with a groove (41), and the periphery of the piezoelectric ceramic sheet (2) and / or the periphery of the protective sheet (3) are embedded in the groove (41).

6. The atomizer according to claim 5, characterized in that, The housing (1) has a raised edge (12) around the edge of the atomizing hole (11), the raised edge (12) extends into the housing (1), and the flexible sealing sleeve (4) is sleeved on the raised edge (12).

7. The atomizer according to claim 6, characterized in that, There is a gap between the protruding edge (12) and the protective sheet (3).

8. The atomizer according to any one of claims 1-7, characterized in that, The interior of the housing (1) is filled with thermosetting epoxy resin.

9. The atomizer according to any one of claims 1-7, characterized in that, The atomizer is also provided with a pressure plate (6), and the inner wall of the housing (1) is provided with a connecting post (13). The pressure plate (6) is fixed on the connecting post (13), and the flexible sealing sleeve (4) is clamped and fixed between the pressure plate (6) and the shell wall of the housing (1).

10. The atomizer according to claim 9, characterized in that, The pressure plate (6) is detachably connected to the connecting column (13).

11. A condensing gas water heater, comprising a condensing chamber (20) and an atomizing chamber (30) connected in series, wherein a condensing heat exchanger (40) is provided in the condensing chamber (20), characterized in that, The atomizing chamber (30) is equipped with an atomizer (10) as described in any one of claims 1-10.

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