electric water heater

Abstract

The present application relates to the technical field of electric water heaters, and discloses an electric water heater comprising an inner tank, wherein a magnesium rod is provided inside the inner tank, and an inner tank wall is provided with an opening. The present application also comprises: a fixing sleeve fixed to the outside of the inner tank wall around the edge of the opening, and provided with a through hole corresponding to the shape of the opening; a base corresponding to the shape of the opening, comprising a first section and a second section, and detachably connected to the fixing sleeve; the first section extends into the inner tank through the through hole and is configured to install the magnesium rod; the second section is placed in the through hole; a sealed cabin is provided in the inner tank, covers the opening, and has an enclosed accommodation space inside, which is configured to accommodate the magnesium rod. By providing the sealed cabin and the fixing sleeve, the present application eliminates the need to drain all the water in the electric water heater and then turn off the power before replacing the magnesium rod, thereby saving the time of replacing the magnesium rod and reducing the complexity of the operation.

Description

Technical Field

[0001] The present application relates to the technical field of water heating devices, for example, to an electric water heater. Background Art

[0002] At present, in order to prevent excessive corrosion of the inner tank of electric water heaters, the inner tank of the water heater is generally protected by enamel technology. However, the existing technology cannot guarantee that the inner tank is completely covered with enamel, and due to the frequent alternation of hot and cold during use, it cannot be guaranteed that the enamel layer will not crack. Once the enamel layer cracks, the part of the inner tank exposed to the water will continue to corrode.

[0003] In response to the above problems, an electrochemical protection technology has been adopted in the prior art, which introduces a sacrificial anode to further protect the inner tank. That is, in the electric water heater, a magnesium rod is set as an anode to provide cathodic protection for the inner tank. However, the effective service life of the magnesium rod is greatly affected by the water quality, and the magnesium rod needs to be inspected and replaced regularly. Therefore, a magnesium rod assembly that is easy to replace or disassemble should be used to solve the problem of cumbersome operation. The related technology provides a solution for replacing the magnesium rod, such as Figure 1 As shown, it includes an inner tank 2, a tightening plug 3, a tension sensor 31, and a control device 10. A connecting rope 32 is provided at the bottom of the tension sensor 31, and the connecting rope passes through the tightening plug 3. A center rod 33 is fixed to the bottom of the connecting rope, and a cylindrical magnesium rod 34 is sheathed on the outside of the center rod. When the magnesium rod needs to be replaced, the control device 10 is operated to process the information fed back by the tension sensor 31 at this time. If the cylindrical magnesium rod 34 needs to be replaced, the control device 10 reminds you to replace it, stops the water heater from working, drains the water in the inner tank 2, unscrews the tightening plug 3, replaces the combination of the center rod 33 and the cylindrical magnesium rod 34, and then re-fixes the tightening plug 3 on the inner tank 2. However, in this technology, all the water in the water heater needs to be drained and the power supply needs to be cut off before replacement, which does not fundamentally solve the problem of the cumbersome operation process of replacing the magnesium rod.

[0004] In the process of implementing the embodiments of the present disclosure, it was found that there are at least the following problems in the related technology: before replacing the magnesium rod, all the water in the inner tank needs to be drained and the power supply needs to be cut off, which makes the operation process of replacing the magnesium rod cumbersome and takes a long time to replace the magnesium rod. Summary of the Invention

[0005] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0006] The disclosed embodiment provides an electric water heater to solve the problem that the operation process of replacing a magnesium rod is complicated and takes a long time.

[0007] In some embodiments, an electric water heater includes an inner tank, a magnesium rod is provided inside the inner tank, and an opening is provided in the inner tank wall. It also includes: a fixing sleeve, fixed to the outside of the inner tank wall around the edge of the opening, and provided with a through hole corresponding to the shape of the opening; a base, corresponding to the shape of the opening, including a first section and a second section, which are detachably connected to the fixing sleeve; the first section extends into the inner tank through the through hole and is configured to install the magnesium rod; the second section is placed in the through hole; a sealed cabin is arranged in the inner tank, covering the opening, and has a sealed accommodation space inside, which is configured to accommodate the magnesium rod.

[0008] The disclosed embodiment provides an electric water heater that can achieve the following technical effects: when the magnesium rod of the electric water heater needs to be replaced, the magnesium rod is placed in the sealed accommodation space of the sealed cabin, the water in the sealing device is drained, and the base and the magnesium rod are simultaneously pulled out of the fixed sleeve. After the new magnesium rod is replaced, the magnesium rod and the base are inserted into the fixed sleeve and fixed. By providing the sealed cabin and fixed sleeve, the user does not need to drain all the water in the electric water heater and then turn off the power before replacing the magnesium rod, which saves the time of replacing the magnesium rod and reduces the complexity of the operation.

[0009] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0011] Figure 1 This is a front view of a device for easily replacing a magnesium rod provided by the related art;

[0012] Figure 2 is a schematic diagram of the planar structure of the electric water heater provided by an embodiment of the present disclosure;

[0013] Figure 3 is a structural diagram of an electric water heater provided by an embodiment of the present disclosure;

[0014] Figure 4 is a cross-sectional view of an electric water heater provided by an embodiment of the present disclosure;

[0015] Figure 5 The embodiment of the present disclosure provides Figure 4 A partial schematic diagram of .

[0016] Reference numerals:

[0017] 1. Inner liner; 10. Opening; 11. Seal; 2. Magnesium rod; 3. Fixing sleeve; 30. Through hole; 31. Slot; 32. Limit block; 4. Base; 40. Groove; 41. First section; 42. Second section; 43. Positioning block; 5. Sealed cabin; 50. Accommodation space; 51. First side wall; 52. First top wall; 53. Second side wall; 54. Second top wall; 55. Connecting rod; 60. First sensor; 61. Second sensor; 7. Electric module; 8. Drainage assembly; 81. Water pipe; 82. Water pump; 9. Exhaust assembly; 91. Air pipe; 92. Air valve. DETAILED DESCRIPTION

[0018] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0019] Figure 2 is a schematic diagram of the planar structure of the electric water heater provided by an embodiment of the present disclosure; Figure 3 This is a partial structural diagram of the electric water heater provided by the embodiment of the present disclosure. Figure 2 、 Figure 3 As shown, an embodiment of the present disclosure provides an electric water heater, comprising an inner tank 1, a magnesium rod 2, a fixing sleeve 3, a base 4 and a sealed cabin 5. A magnesium rod 2 is provided inside the inner tank 1, and an opening 10 is provided on the side wall of the inner tank 1; the fixing sleeve is fixed to the outside of the side wall of the inner tank 1 around the edge of the opening 10, and is provided with a through hole 30 corresponding to the shape of the opening 10; the base 4, corresponding to the shape of the opening 10, comprises a first section 41 and a second section 42, and is detachably connected to the fixing sleeve 3; the first section 41 extends into the inner tank 1 through the through hole 30 and is configured to install the magnesium rod 2; the second section is placed in the through hole 30; the sealed cabin 5 is arranged in the inner tank 1, covers the opening 10, and is provided with a sealed accommodation space 50 inside, which is configured to accommodate the magnesium rod 2.

[0020] The magnesium rod 2 is arranged inside the inner liner 1. During use, in order to prevent the inner liner 1 from being corroded, the magnesium rod acts as an anode to apply cathodic protection to the inner liner 1, which is an electrochemical protection technology.

[0021] An opening 10 is provided on the side wall of the inner container 1 , so that the magnesium rod 2 can be placed inside the inner container 1 through the opening 10 .

[0022] A fixing sleeve 3 is provided around the edge of the opening 10 for fixing the base 4 to the inner liner 1. Optionally, the fixing sleeve 3 is fixed to the outside of the side wall of the inner liner 1. In this way, the service life of the fixing sleeve can be guaranteed and the fixing sleeve can be prevented from falling off the inner liner 1 after a long time. Optionally, the fixing sleeve 3 is provided with a through hole 30 corresponding to the opening 10. In this way, the opening 10 and the through hole 30 together form a channel through which the magnesium rod 2 can be placed in or taken out of the electric water heater.

[0023] The base 4 corresponds to the shape of the opening 10 and can be placed into the interior of the inner liner 1 through the channel formed by the through hole 30 and the opening 10. Optionally, the base 4 includes a first section 41 and a second section 42. The first section 41 extends into the interior of the inner liner 1 through the through hole 30 and is configured to install the magnesium rod 2; the second section 42 is placed in the through hole 30, fits tightly with the inner wall of the through hole 30, and is detachably connected to the fixing sleeve 3. In this way, after the magnesium rod 2 is placed in the interior of the inner liner 1 by being installed on the first section of the base 4, and after the second section of the base 4 is connected to the fixing sleeve 3, the base 4 is connected to the inner liner 1; when the magnesium rod 2 needs to be replaced, the base 4 is removed from the fixing sleeve 3, and the magnesium rod 2 is taken out at the same time.

[0024] The sealed chamber 5 is disposed inside the inner liner 1, covering the opening 10. It has a sealed accommodation space 50 inside, which is configured to accommodate the magnesium rod 2. When the magnesium rod 2 needs to be replaced, the water in the accommodation space 50 is drained, and the base 4 is removed from the fixing sleeve 3. The magnesium rod can then be taken out and replaced. After the replacement is completed, the magnesium rod is placed inside the inner liner 1 through the base 4, and the base 4 is connected to the fixing sleeve 3 to complete the fixing of the magnesium rod. In this way, the magnesium rod can be replaced quickly and conveniently without draining all the water inside the inner liner 1 or cutting off the power.

[0025] Figure 4 is a cross-sectional view of an electric water heater provided by an embodiment of the present disclosure, Figure 5 The embodiment of the present disclosure provides Figure 4 A partial schematic diagram of the combined Figure 4 、 Figure 5 As shown, in some embodiments, a slot 31 is provided on the side wall of the fixing sleeve 3, and a positioning block 43 is provided on the side wall of the base 4, which can be embedded in the slot 31. Optionally, the shape of the slot 31 corresponds to the shape of the positioning block 43. In this way, when the positioning block 43 is embedded in the slot 31, it can fit tightly with the side wall of the slot 31, thereby tightly cooperating with the slot 31 and ensuring the fixing strength of the fixing sleeve 3 to the base 4.

[0026] In some embodiments, a stopper 32 is provided within the slot 31, slidably connected to the slot 31 and configured to limit the length of the positioning block 43 that can be inserted into the slot 31. Optionally, a guide rail is provided on the side of the stopper 32 that contacts the slot 31, and a slide groove that mates with the guide rail is provided on the corresponding side of the slot 31. This allows the stopper 32 to slide freely within the slot 31. Optionally, the length of the slide groove is less than or equal to two-thirds of the length of the slot. This limits the length of the positioning block 43 that can be inserted into the slot 31 to no more than the length of the slot. Optionally, a stopper is provided at the end of the slide groove opposite the positioning block 43. This prevents the stopper 32 from being ejected from the slot 31 by the action of the positioning block 43 when the positioning block 43 is inserted into the slot 31. The interaction between the positioning block 43, the slot 31, and the stopper 32 ensures that the fixing sleeve 3 is securely attached to the base 4.

[0027] In some embodiments, a groove 40 is provided on the sidewall of the base 4, configured to accommodate a positioning block 43. The groove 40 on the sidewall of the base 4 corresponds in shape to the positioning block 43 and accommodates the positioning block 43. The positioning block 43 is connected to the base 4 via the groove 40. Optionally, the positioning block can slide freely within the groove 40. The portion of the positioning block 43 that slides out of the groove 40 can be inserted into the slot 31.

[0028] In some embodiments, the positioning block 43 is elastically connected to the groove 40. Optionally, the positioning block 43 is connected to the groove 40 via a spring member. In this way, under the action of the tightening spring, the positioning block 43 is completely accommodated in the groove 40. At this time, the connection between the base 4 and the fixing sleeve 3 is released, and the base 4 and the magnesium rod 2 are removed from the inner container. After replacing the new magnesium rod 2, the base 4 is placed back into the fixing sleeve 3. Under the action of the spring elasticity, the positioning block is ejected from the groove 40 and embedded in the card slot 31, so that the base 4 is connected to the fixing sleeve 3, completing the installation of the base 4.

[0029] In some embodiments, a sealing member 11 is provided at the opening 10 and fixedly connected to the opening 10. The sealing member 11 is tightly fixedly connected to the side wall of the opening 10, ensuring that the water heater is sealed and isolated from the external environment when the base 4 is installed on the fixing sleeve 3.

[0030] In some embodiments, the electric water heater further includes a first sensor 60. The first sensor 60 is disposed at the junction of the seal 11 and the second section 42 and is electrically connected to a control module of the electric water heater. The first sensor 60 is configured to transmit a detected pressure signal to the control module of the electric water heater; the control module is configured to determine installation information of the base 4. During installation of the base 4, the first sensor 60 receives pressure from the second section 42 of the base 4 and transmits the detected pressure signal to the control module of the electric water heater. The pressure signal is then compared with a preset pressure value. When the detected pressure signal exceeds the preset pressure value, the control module confirms that the installation of the base 4 is complete.

[0031] In some embodiments, the sealed cabin 5 includes a first side wall 51, a first top wall 52, a second side wall 53 and a second top wall 54. The first side wall 51 is fixedly connected to the inner liner; the first top wall 52 is fixedly connected to the first side wall; the second side wall 53 is arranged opposite to the first side wall and is slidably connected to the inner liner; the second top wall 54 is fixedly connected to the second side wall. Optionally, the first side wall 51 and the first top wall 52 constitute the fixed part of the sealed cabin, and the second side wall 53 and the second top wall 54 constitute the movable part of the sealed cabin. When the first side wall and the second side wall, the first top wall and the second top wall are docked together, an enclosed accommodating space is enclosed. In this way, when the magnesium rod 2 is in the enclosed accommodating space 50 enclosed by the sealed cabin 5, the replacement operation of the magnesium rod 2 can be started when the water in the sealed cabin 5 is discharged.

[0032] In some embodiments, the electric water heater further includes a connecting rod 55 and an electric module 7. One end of the connecting rod 55 is fixedly connected to the second side wall 53, while the other end extends through the inner tank wall and is fixedly connected to the electric module 7. The electric module 7 is disposed outside the inner tank 1. The electric module 7 is configured to drive the connecting rod 55 to move the second side wall 53 and the second top wall 54. The electric module 7 is electrically connected to the electric water heater's control module, which is configured to control the electric module's on and off.

[0033] In some embodiments, the electric water heater also includes a drainage assembly 8. The drainage assembly 8 includes a water pipe 81 and a water pump 82. One end of the water pipe 81 passes through the first side wall 51 and is connected to the accommodating space 50, and the other end is connected to the water pump 82. When the magnesium rod 2 needs to be replaced, the sealed cabin 5 encloses the closed accommodating space 50 and the water pump 82 is turned on. At this time, the water in the accommodating space 50 can be discharged from the sealed cabin to the inner tank 1 through the water pipe 81, and the exhaust assembly 9 is turned on to inflate the accommodating space 50 to ensure the internal and external air pressure balance of the accommodating space 50; the water in the inner tank can also be injected into the interior of the accommodating space 50, and the exhaust assembly 9 is turned on to exhaust air from the accommodating space 50 to the outside.

[0034] Optionally, the water pump 82 is connected to an external water pipeline. In this way, the water in the accommodating space 50 can be discharged to the outside of the sealed cabin 5; after the magnesium rod 2 is replaced and reinstalled in the inner tank, the external water can also be filled into the accommodating space 50. Optionally, the water pump is set as a one-way water valve. In this way, when drainage is required, the exhaust component 9 is opened to inflate the accommodating space 50. At this time, the pressure gradually increases, and under the action of the pressure, the water in the accommodating space 50 is discharged along the water pipe 81 and the one-way water valve.

[0035] In some embodiments, the electric water heater further includes an exhaust assembly 9. The exhaust assembly 9 includes an air pipe 91 and an air valve 92. One end of the air pipe 91 passes through the first top wall to communicate with the accommodating space 50, and the other end passes through the inner tank wall to be connected to the air valve. When the magnesium rod 2 needs to be replaced, after the sealed cabin 5 encloses the closed accommodating space 50, the water pump 82 is turned on to drain the water, and at the same time, the air valve 92 is opened to inflate the accommodating space 50 to ensure that the internal and external air pressures of the accommodating space 50 are balanced; or when the water pump 82 is injecting water into the accommodating space 50, the air valve 92 can be opened to exhaust the air outside the accommodating space 50.

[0036] Alternatively, the air valve 92 can be configured as an air pump. This allows the air pump to be controlled to directly fill the accommodating space with gas, making the exhaust or inflation operation more convenient. Furthermore, if only an air valve is provided, the air valve requires the coordination of other auxiliary components to complete the exhaust or inflation operation of the accommodating space 50. By configuring the air valve 92 as an air pump, the air valve and other auxiliary components can be replaced, thereby reducing costs.

[0037] In some embodiments, the electric water heater further includes: a second sensor 61. The second sensor 61 is disposed on the first top wall 52, electrically connected to the control module of the electric water heater, and configured to transmit the water level information detected in the sealed cabin 5 to the control module of the electric water heater. After the magnesium rod 2 is replaced and reinstalled on the fixed sleeve 3 with the base 4, the water pump 82 is turned on to inject water into the accommodating space 50, and at the same time, the air valve 92 is opened to exhaust air outside the accommodating space 50. When the second sensor 61 detects the water level, the detected water level information is transmitted to the control module of the electric water heater. At this time, the control module of the electric water heater receives the signal of the water level information, determines that the accommodating space 50 is full of water, controls the water pump 82 to stop working, and drives the connecting rod 55 to separate the second side wall 53 and the second top wall 54 from the first side wall 51 and the first top wall 52 by controlling the electric module 7.

[0038] The disclosed embodiment provides an electric water heater, which eliminates the need to drain all the water in the electric water heater and then turn off the power before replacing the magnesium rod, thereby saving the time for replacing the magnesium rod and reducing the complexity of the operation.

[0039] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

[0040] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0041] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0042] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0043] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0044] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An electric water heater, comprising an inner tank, a magnesium rod is provided inside the inner tank, and an opening is provided on the inner tank wall, wherein: Also includes: A fixing sleeve, fixed to the outside of the inner liner wall around the edge of the opening, and provided with a through hole corresponding to the shape of the opening; The base, corresponding to the shape of the opening, includes a first section and a second section, and is detachably connected to the fixing sleeve; the first section extends into the inner container through the through hole and is configured to install the magnesium rod; the second section is placed in the through hole; A sealed cabin is disposed in the inner container, covers the opening, and has a sealed accommodation space therein, configured to accommodate the magnesium rod; Wherein, the sealed cabin comprises: a first side wall, fixedly connected to the inner container; a first top wall, fixedly connected to the first side wall; a second side wall, disposed opposite to the first side wall and slidably connected to the inner container; a second top wall, fixedly connected to the second side wall; When the first side wall and the second side wall, the first top wall and the second top wall are butted together, the sealed accommodating space is enclosed; Wherein, the electric water heater further comprises: A drainage assembly, comprising a water pipe and a water pump; one end of the water pipe passes through the first side wall and communicates with the accommodating space, and the other end is connected to the water pump; The exhaust assembly includes an air pipe and an air valve; one end of the air pipe passes through the first top wall and is connected to the accommodating space, and the other end passes through the inner tank wall and is connected to the air valve.

2. The electric water heater according to claim 1, characterized in that The side wall of the fixing sleeve is provided with a slot, and the side wall of the base is provided with a positioning block which can be embedded in the slot.

3. The electric water heater according to claim 2, characterized in that: A limiting block is provided in the card slot and is slidably connected to the card slot and is configured to limit the length of the positioning block embedded in the card slot.

4. The electric water heater according to claim 2, characterized in that The side wall of the base is provided with a groove configured to accommodate the positioning block.

5. The electric water heater according to claim 4, characterized in that: The positioning block is elastically connected to the groove.

6. The electric water heater according to claim 1, characterized in that A sealing member is provided at the opening and is fixedly connected to the opening.

7. The electric water heater according to claim 6, characterized in that Also includes: The first sensor is disposed at the connection between the sealing member and the second section, is electrically connected to the control module of the electric water heater, and is configured to transmit a detected pressure signal to the control module of the electric water heater.

8. The electric water heater according to any one of claims 1 to 7, characterized in that: Also includes: A connecting rod, one end of which is fixedly connected to the second side wall.

9. The electric water heater according to claim 8, characterized in that Also includes: an electric module, disposed outside the inner container, fixedly connected to the second side wall via a connecting rod penetrating the inner container wall, and configured to drive the connecting rod to move the second side wall and the second top wall; The electric module is electrically connected to a control module of the electric water heater, and the control module is configured to control the opening or closing of the electric module.

10. The electric water heater according to claim 1, characterized in that The water pump is configured as a one-way water valve.

11. The electric water heater according to claim 1, characterized in that The gas valve is configured as an air pump, so that the air pump is controlled to be turned on to directly fill the accommodating space with gas.

12. The electric water heater according to claim 1, characterized in that Also includes: The second sensor is arranged on the first top wall, is electrically connected to the control module of the electric water heater, and is configured to transmit the water level height information detected in the sealed cabin to the control module of the electric water heater.

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