Heat exchange device and gas water heater

Abstract

The utility model belongs to the technical field of household appliances, specifically discloses a heat exchange device and gas water heater, heat exchange device includes heat exchanger, water inlet pipe and electronic release subassembly, and the water outlet of water inlet pipe is connected with the heat exchange water inlet of heat exchanger and is arranged, and electronic release subassembly is connected in water inlet pipe. Among them, electronic release subassembly includes casing, and the anode piece and cathode piece of interval in the inner chamber of casing, and the inner chamber of casing is connected with the water inlet of water inlet pipe and is arranged, and at least part of water flow in the inner chamber of casing can flow between anode piece and cathode piece and enter water inlet pipe. The heat exchange device provided by the utility model, anode piece and cathode piece are electrified, and the water flow in the casing forms the current flowing from anode piece to cathode piece, which is conducive to increasing the free electron in the water flow in the casing, and part of the free electron will flow through the water inlet pipe and the heat exchanger in turn with the water flow, and the water flow with free electron flowing through the heat exchanger can inhibit the oxidation corrosion of the heat exchanger.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a heat exchange device and a gas water heater. Background Technology

[0002] In recent years, with economic development and scientific and technological progress, people's living standards have greatly improved, and gas water heaters have entered thousands of households.

[0003] In related technologies, heat exchangers in gas water heaters are typically made of copper to ensure good heat exchange performance. Poor water quality flowing into the heat exchanger can cause oxidation and corrosion, potentially leading to perforation and leakage over prolonged use. Therefore, there is an urgent need for a heat exchange device and a gas water heater to solve these technical problems. Utility Model Content

[0004] One of the technical problems solved by this utility model is to provide a heat exchange device that can effectively inhibit the oxidation and corrosion of the heat exchanger.

[0005] The second technical problem solved by this utility model is to provide a gas water heater that can effectively inhibit the oxidation and corrosion of the heat exchanger.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] A heat exchange device, comprising:

[0008] Heat exchanger;

[0009] The water inlet pipe is connected to the heat exchange inlet of the heat exchanger.

[0010] An electronic release assembly is connected to the water inlet pipe. The electronic release assembly includes a housing and a positive electrode and a negative electrode spaced apart within the inner cavity of the housing. The inner cavity of the housing is connected to the water inlet of the water inlet pipe, and at least a portion of the water flow within the inner cavity of the housing can flow between the positive electrode and the negative electrode and enter the water inlet pipe.

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

[0012] The positive and negative electrodes, when energized, can be connected by the water flowing between them. This creates a current flowing from the positive electrode to the negative electrode within the water flow inside the casing. This increases the number of free electrons in the water flow, and some of these free electrons flow sequentially through the inlet pipe and the heat exchanger. The free electrons within the heat exchanger can inhibit oxidation and corrosion, reducing the risk of perforation and leakage due to oxidation and corrosion, and extending the service life of the heat exchange device.

[0013] In one embodiment, the housing includes:

[0014] The positive electrode and the negative electrode are both disposed within the intermediate shell portion;

[0015] The first tube is connected to the top of the intermediate shell and is connected to the heat exchange inlet of the heat exchanger.

[0016] The second tube is connected to the bottom of the intermediate shell.

[0017] The cross-sectional areas of the first tube and the second tube are both smaller than the cross-sectional area of ​​the intermediate shell.

[0018] In one embodiment, both the positive electrode and the negative electrode are plate-shaped structures, and both the positive electrode and the negative electrode are attached to the shell wall of the housing.

[0019] In one embodiment, the negative electrode is coated with a conductive coating on the side facing the positive electrode.

[0020] In one embodiment, the voltage U applied between the positive electrode and the negative electrode is ≤36V.

[0021] In one embodiment, the electronic release assembly further includes an indicator disposed outside the housing, the indicator being capable of forming a conductive loop with the water flow inside the housing, and the indicator being used to indicate whether the positive electrode and the negative electrode are electrically connected through the water flow inside the housing.

[0022] In one embodiment, the positive lead of the indicator is electrically connected to the positive electrode, the housing is provided with a mounting hole, the mounting hole and the negative electrode are located on the same side of the housing, and the positive electrode is located on the side of the housing away from the negative electrode;

[0023] In one embodiment, the negative electrode wire of the indicator passes through the mounting hole and extends into the cavity of the housing, and the negative electrode wire of the indicator forms a seal with the mounting hole; or, the electronic release assembly further includes an electrical connector, the electrical connector passes through the mounting hole and forms a seal with the mounting hole, the first end of the electrical connector is located inside the cavity of the housing, and the second end of the electrical connector is located outside the housing and is electrically connected to the negative electrode wire of the indicator.

[0024] In one embodiment, the mounting hole is located upstream of the negative electrode along the flow direction of the water flow.

[0025] In one embodiment, the indicator includes at least one of an indicator light and a potentiometer.

[0026] In one embodiment, the electron release component further includes:

[0027] A water flow detection element, wherein the water flow detection element is disposed on the housing;

[0028] The controller, the water flow detection device, the positive electrode, and the negative electrode are all electrically connected to the controller;

[0029] The water flow detection device is used to detect the water flow rate inside the cavity of the housing and send a flow rate signal to the controller. The controller can adjust the voltage value applied between the positive electrode and the negative electrode according to the flow rate signal.

[0030] The second technical problem mentioned above is solved by the following technical solution:

[0031] A gas water heater comprising the heat exchange device described in any of the above claims.

[0032] Compared with the prior art, the gas water heater described in this utility model has the following beneficial effects:

[0033] The heat exchange device in a gas water heater increases the number of free electrons in the water flowing through it, thereby inhibiting oxidation and corrosion. This reduces the risk of perforation and leakage due to oxidation and corrosion, and extends the lifespan of the heat exchange device. Attached Figure Description

[0034] Figure 1 A schematic diagram of the heat exchange device provided by this utility model;

[0035] Figure 2 A schematic diagram of the working principle of the electronic release component provided by this utility model;

[0036] Figure 3 A schematic diagram of the distribution of free electrons in the water exchange pipe provided by this utility model;

[0037] Figure 4 This is a schematic diagram of the structure of the heat exchange device provided by this utility model at the heat exchanger.

[0038] Label Explanation:

[0039] 100. Heat exchanger; 110. Heat exchanger shell; 120. Hot water pipe;

[0040] 200. Water inlet pipe;

[0041] 300, Shell; 310, Intermediate Shell Section; 320, First Tube Section; 330, Second Tube Section;

[0042] 400. Positive electrode;

[0043] 500. Negative electrode component; 510. Conductive coating;

[0044] 600. Water outlet pipe;

[0045] 700. Indicator; 710. Electrical connector;

[0046] 800. Water flow detection components;

[0047] 900, Controller. Detailed Implementation

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0049] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0050] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0051] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0052] Reference Figures 1 to 4 As shown, this embodiment provides a heat exchange device, which includes a heat exchanger 100, a water inlet pipe 200, and an electronic release component.

[0053] The outlet of the water inlet pipe 200 is connected to the heat exchange inlet of the heat exchanger 100, and the electronic release component is connected to the water inlet pipe 200. The electronic release component includes a housing 300, and a positive electrode 400 and a negative electrode 500 spaced apart in the inner cavity of the housing 300. The inner cavity of the housing 300 is connected to the water inlet of the water inlet pipe 200, and at least a portion of the water flow in the inner cavity of the housing 300 can flow between the positive electrode 400 and the negative electrode 500 and enter the water inlet pipe 200.

[0054] It is understandable that the water can flow through the shell 300 and the inlet pipe 200 in sequence before entering the heat exchanger 100, and the water flowing through the heat exchanger 100 can be used by the user after exchanging heat and heating up.

[0055] In this embodiment, the energized positive electrode 400 and negative electrode 500 are connected by the water flowing between them. This creates a current flowing from the positive electrode 400 to the negative electrode 500 within the water flow inside the housing 300. This increases the number of free electrons in the water flow within the housing 300, and some of these free electrons flow sequentially through the inlet pipe 200 and the heat exchanger 100. The free electrons within the heat exchanger 100 can suppress oxidation and corrosion, reducing the risk of perforation and leakage due to oxidation and corrosion, and extending the service life of the heat exchange device. Figure 2 The larger arrows indicate the direction of water flow, while the smaller arrows indicate the direction of free electron movement. Figure 1 and Figure 3 The arrows in the diagram indicate the direction of water flow. Among them, Figure 2 and Figure 3 The letter 'e' in the equation represents a free electron.

[0056] Understandably, the flow of water with free electrons through the inlet pipe 200 can inhibit the oxidation and corrosion of the inlet pipe 200, which helps to reduce the risk of perforation and leakage of the inlet pipe 200 due to oxidation and corrosion, and improves the service life of the inlet pipe 200.

[0057] For example, to ensure water safety, the voltage U applied between the positive electrode 400 and the negative electrode 500 is ≤36V. In this embodiment, the voltage U applied between the positive electrode 400 and the negative electrode 500 can be set to 5V, 12V, or 24V. It is understood that the higher the voltage applied between the positive electrode 400 and the negative electrode 500, the greater the distance between them, thereby reducing the current in the water flow. This ensures water safety while effectively suppressing oxidation corrosion by maintaining a high density of free electrons in the water flowing into the heat exchanger 100.

[0058] For example, the housing 300 is designed as a one-piece structure, but it can also be a split design; this embodiment does not limit the design.

[0059] For example, the heat exchanger 100 includes a heat exchange shell 110 and a hot water pipe 120 disposed within the heat exchange shell 110. Water can flow sequentially through the shell 300 and the inlet pipe 200 before entering the hot water pipe 120. The flow of water with free electrons through the hot water pipe 120 can suppress the oxidation and corrosion of the hot water pipe 120. The hot water pipe 120 can be a copper pipe. It is understood that free electrons can prevent the hot water pipe 120 from changing from a solid state to a free ionic state and existing in the solution, thereby suppressing the occurrence of oxidation and corrosion.

[0060] For example, the negative electrode 500 is coated with a conductive coating 510 on the side facing the positive electrode 400, which helps to increase the existence time of free electrons in the water flow and helps to suppress the oxidation and corrosion of the heat exchanger 100. The conductive coating 510 can be a copper-nickel catalyst resin coating.

[0061] For example, the housing 300 can be made of an insulating material. For instance, the material of the housing 300 can be polyphenylene sulfide (PPS).

[0062] In this embodiment, reference is made to Figure 1 and Figure 4As shown, the heat exchange device also includes a water outlet pipe 600, which is connected to the heat exchange outlet of the heat exchanger 100. At least a portion of the water outlet pipe 600 is wound around the heat exchanger 100 to further increase the outlet water temperature. It is understood that the flow of water with free electrons through the water outlet pipe 600 can inhibit oxidation and corrosion, thus reducing the risk of perforation and leakage due to oxidation and corrosion, and extending the service life of the water outlet pipe 600. The water outlet pipe 600 can be made of copper.

[0063] In this embodiment, reference is made to Figure 1 and Figure 2 As shown, the housing 300 includes an intermediate housing portion 310, a first tube portion 320, and a second tube portion 330. Both the positive electrode 400 and the negative electrode 500 are disposed within the intermediate housing portion 310. The first tube portion 320 is connected to the top of the intermediate housing portion 310 and is also connected to the heat exchange inlet of the heat exchanger 100. The second tube portion 330 is connected to the bottom of the intermediate housing portion 310. The cross-sectional areas of both the first tube portion 320 and the second tube portion 330 are smaller than the cross-sectional area of ​​the intermediate housing portion 310. It is understood that a water source can be connected to the second tube portion 330, and the water flows sequentially through the second tube portion 330, the intermediate housing portion 310, and the first tube portion 320, i.e., the water flows upwards, which facilitates the filling of the intermediate housing portion 310. Furthermore, the cross-sectional area of ​​the intermediate shell 310 is relatively large, and the water flow inside the intermediate shell 310 is relatively slow, which is conducive to increasing the free electrons in the water flow inside the intermediate shell 310. The water flow can also carry more free electrons into the heat exchanger 100, increasing the density of free electrons in the water flow inside the heat exchanger 100, which is more conducive to suppressing the oxidation and corrosion of the heat exchanger 100.

[0064] For example, the positive electrode 400 and the negative electrode 500 are located on opposite sides of the intermediate shell 310. In other words, the positive electrode 400 is located on the side of the intermediate shell 310 away from the negative electrode 500. This helps to reduce the structural size of the intermediate shell 310. Increasing the distance between the positive electrode 400 and the negative electrode 500 can reduce the problem of excessive local electric field. The distribution of free electrons is more uniform, and the density of free electrons in the water flow inside the heat exchanger 100 is more stable. This helps to reduce the risk of perforation and leakage of the heat exchanger 100 due to oxidation and corrosion, and improves safety.

[0065] For example, both the positive electrode 400 and the negative electrode 500 are plate-shaped structures, and both are attached to the shell wall of the housing 300. For instance, both the positive electrode 400 and the negative electrode 500 are attached to the shell wall of the intermediate shell 310 for easy assembly. It is understood that the plate-shaped positive electrode 400 and negative electrode 500 have a large contact area with the water flow, which is beneficial for increasing the number of free electrons in the water flow within the intermediate shell 310, improving the uniformity of free electron distribution, and enhancing the stability of the free electron density value in the water flow within the heat exchanger 100.

[0066] For example, the positive electrode 400 and the negative electrode 500 are parallel to each other.

[0067] In some embodiments, the electronic release assembly further includes an indicator 700 disposed outside the housing 300. The indicator 700 is capable of forming a conductive loop with the water flow within the cavity of the housing 300, and the indicator 700 is used to indicate whether the positive electrode 400 and the negative electrode 500 are electrically connected through the water flow within the housing 300, thereby providing feedback information on whether the electronic release assembly is operating and improving safety. It is understood that when the indicator 700 is on, it indicates that a current is formed in the water flow within the housing 300, flowing from the positive electrode 400 to the negative electrode 500; when the indicator 700 is off, it indicates that no current is formed in the water flow within the housing 300.

[0068] For example, the positive lead of the indicator 700 is electrically connected to the positive electrode 400.

[0069] For example, the housing 300 has a mounting hole (not shown), the mounting hole and the negative electrode 500 are located on the same side of the housing 300, and the positive electrode 400 is located on the side of the housing 300 away from the negative electrode 500. For example, the intermediate housing portion 310 has a mounting hole, the mounting hole and the negative electrode 500 are located on the same side of the intermediate housing portion 310, and the positive electrode 400 is located on the side of the intermediate housing portion 310 away from the negative electrode 500.

[0070] In one feasible implementation, the negative electrode wire of the indicator 700 passes through the mounting hole and extends into the cavity of the housing 300, and the negative electrode wire of the indicator 700 forms a seal with the mounting hole, which facilitates the assembly of the indicator 700 and enables the indicator 700 to indicate whether the positive electrode 400 and the negative electrode 500 are electrically connected through the water flow in the housing 300.

[0071] In another feasible embodiment, the electronic release assembly further includes an electrical connector 710. The electrical connector 710 passes through a mounting hole and forms a seal with the mounting hole. The first end of the electrical connector 710 is located inside the cavity of the housing 300, and the second end of the electrical connector 710 is located outside the housing 300 and is electrically connected to the negative lead of the indicator 700. It is understood that integrating the electrical connector 710 onto the housing 300 facilitates the replacement of the indicator 700 and enables the indicator 700 to indicate whether the positive electrode 400 and the negative electrode 500 are electrically connected through the water flow within the housing 300. Exemplarily, the electrical connector 710 can be configured as a terminal structure, and the negative lead of the indicator 700 is connected to the electrical connector 710 via a plug-in connection.

[0072] For example, the mounting hole is located upstream of the negative electrode 500 along the direction of water flow. It is understood that air may be present at the top of the cavity inside the housing 300. Positioning the mounting hole upstream of the negative electrode 500 along the direction of water flow helps reduce the risk of poor contact caused by air present in the cavity inside the housing 300 affecting the contact between the negative electrode wire or electrical connector 710 and the water flow, thereby improving the indicating reliability of the indicator 700.

[0073] For example, the indicator 700 includes at least one of an indicator light and a potentiometer. It is understood that the indicator light illuminates when a current flows from the positive electrode 400 to the negative electrode 500 in the water flow within the housing 300, making it easy to observe, and the magnitude of the current in the water flow within the housing 300 can be determined by observing the brightness of the indicator light. It is understood that the potentiometer can detect the potential difference of the water flow within the housing 300 more accurately.

[0074] For example, the electron release assembly also includes a water flow detection element 800, which is disposed on the housing 300 and used to detect the water flow rate inside the cavity of the housing 300. Based on the detected flow rate, the voltage applied between the positive electrode 400 and the negative electrode 500 is adjusted to stabilize the current value in the water flow within the housing 300, thereby stabilizing the density of free electrons in the water flow within the heat exchanger 100. This helps reduce the risk of perforation and leakage in the heat exchanger 100 due to oxidation and corrosion. It is understood that an increase in the water flow velocity within the housing 300 leads to an increase in water resistance and a decrease in the current, resulting in a decrease in the density of free electrons in the water flow within the heat exchanger 100. In this case, the voltage applied between the positive electrode 400 and the negative electrode 500 can be increased to increase the density of free electrons in the water flow within the heat exchanger 100.

[0075] For example, the water flow detection element 800 may be provided on the second pipe section 330.

[0076] For example, the electronic release assembly also includes a controller 900, and a water flow detection element 800, a positive electrode 400, and a negative electrode 500 are all electrically connected to the controller 900. The water flow detection element 800 detects the water flow rate within the cavity of the housing 300 and sends a flow signal to the controller 900. The controller 900 can adjust the voltage applied between the positive electrode 400 and the negative electrode 500 based on the flow signal for convenient control.

[0077] For example, the controller 900 is electrically connected to the indicator 700, meaning that the controller 900, the indicator 700, and the water flow detection element 800 form a feedback regulation mechanism. It is understood that the controller 900 can adjust the voltage value applied between the positive electrode 400 and the negative electrode 500 based on the flow signal, and the controller 900 can also fine-tune the voltage value applied between the positive electrode 400 and the negative electrode 500 based on feedback from the indicator 700. Maintaining a relatively stable brightness of the indicator light or keeping the potentiometer reading within a relatively stable range ensures that the current value within the water flow remains within a suitable range.

[0078] This embodiment also provides a gas water heater, which includes the aforementioned heat exchange device. Other structures of the gas water heater are existing technologies and are not the focus of this invention, so they will not be described in detail here. In this embodiment, by incorporating a heat exchange device, the gas water heater increases the number of free electrons in the water flowing through the heat exchanger 100, thereby inhibiting oxidation and corrosion of the heat exchanger 100. This reduces the risk of perforation and leakage due to oxidation and corrosion, and improves the service life of the heat exchange device.

[0079] 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.

[0080] 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. A heat exchange device, characterized by, include: Heat exchanger (100); The water inlet pipe (200) is connected to the heat exchange inlet of the heat exchanger (100) through its outlet. An electronic release assembly is connected to the water inlet pipe (200). The electronic release assembly includes a housing (300) and a positive electrode (400) and a negative electrode (500) spaced apart in the inner cavity of the housing (300). The inner cavity of the housing (300) is connected to the water inlet of the water inlet pipe (200), and at least a portion of the water flow in the inner cavity of the housing (300) can flow between the positive electrode (400) and the negative electrode (500) and enter the water inlet pipe (200).

2. The heat exchange device of claim 1, wherein The housing (300) includes: The intermediate shell portion (310) contains both the positive electrode (400) and the negative electrode (500). The first tube (320) is connected to the top of the intermediate shell (310), and the first tube (320) is connected to the heat exchange inlet of the heat exchanger (100). The second tube (330) is connected to the bottom of the intermediate shell (310); The cross-sectional area of ​​the first tube (320) and the cross-sectional area of ​​the second tube (330) are both smaller than the cross-sectional area of ​​the intermediate shell (310).

3. The heat exchange device of claim 1, wherein Both the positive electrode (400) and the negative electrode (500) are plate-shaped structures, and both the positive electrode (400) and the negative electrode (500) are attached to the shell wall of the housing (300).

4. The heat exchange device of claim 1, wherein The negative electrode (500) is coated with a conductive coating (510) on the side facing the positive electrode (400).

5. The heat exchange device of claim 1, wherein The voltage U applied between the positive electrode (400) and the negative electrode (500) is ≤36V.

6. The heat exchange device according to any one of claims 1 to 5, characterized in that, The electronic release assembly also includes an indicator (700) disposed outside the housing (300), the indicator (700) being able to form a conductive circuit with the water flow inside the cavity of the housing (300), and the indicator (700) being used to indicate whether the positive electrode (400) and the negative electrode (500) are electrically connected through the water flow inside the housing (300).

7. The heat exchange device of claim 6, wherein The positive lead of the indicator (700) is electrically connected to the positive electrode (400). The housing (300) is provided with a mounting hole. The mounting hole and the negative electrode (500) are located on the same side of the housing (300). The positive electrode (400) is located on the side of the housing (300) away from the negative electrode (500). In this embodiment, the negative electrode wire of the indicator (700) passes through the mounting hole and extends into the cavity of the housing (300), and the negative electrode wire of the indicator (700) forms a seal with the mounting hole; or, the electronic release assembly further includes an electrical connector (710), the electrical connector (710) passes through the mounting hole and forms a seal with the mounting hole, the first end of the electrical connector (710) is located inside the cavity of the housing (300), and the second end of the electrical connector (710) is located outside the housing (300) and is electrically connected to the negative electrode wire of the indicator (700).

8. The heat exchange device of claim 7, wherein The mounting hole is located upstream of the negative electrode (500) along the direction of water flow.

9. The heat exchange device of claim 6, wherein, The indicator (700) includes at least one of an indicator light and a potentiometer.

10. The heat exchange device according to any one of claims 1 to 5, wherein The electronic release component also includes: A water flow detection element (800) is disposed on the housing (300); The controller (900) is electrically connected to the water flow detection device (800), the positive electrode (400) and the negative electrode (500); The water flow detection device (800) is used to detect the water flow rate in the inner cavity of the housing (300) and send a flow rate signal to the controller (900). The controller (900) can adjust the voltage value applied between the positive electrode (400) and the negative electrode (500) according to the flow rate signal.

11. A gas water heater, characterised by, Includes the heat exchange device as described in any one of claims 1-10.

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