Hot water supply device

Abstract

A hot water supply device comprises a shell, a water tank, a main body device, a pipeline, a water pan and a safety valve. The main body device is connected with the water tank and is configured to supply water and heat to the water tank. And the pipeline is arranged in the main body device and the water tank. And the water pan is arranged between the main body device and the water tank. And the pipeline is arranged on the water pan in a penetrating manner. The water pan comprises a bottom plate and a first through hole. And the first through hole is formed in the bottom plate. The safety valve is arranged in the first through hole in a penetrating mode. One part of the safety valve is located on the side, away from the water tank, of the water pan. One part of the safety valve extends into the cavity of the inner container, the other part of the safety valve extends into the cavity of the inner container, the other part of the safety valve is located on the side, close to the water pan, of the cavity, and the safety valve is configured to conduct pressure relief on the water tank.

Description

Hot water supply equipment

[0001] This application claims priority to the Chinese patent application with application number 202210917212.0 filed on August 1, 2022; priority to the Chinese patent application with application number 202222010063.8 filed on August 1, 2022; priority to the Chinese patent application with application number 202210918589.8 filed on August 1, 2022; priority to the Chinese patent application with application number 202210937190.4 filed on August 5, 2022, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the technical field of household appliances, and in particular to a hot water supply device. Background Art

[0003] With technological advancements and rising living standards, hot water supply equipment has become an essential component of our lives. Using a heat source, hot water supply equipment can convert cold water into hot water within a certain timeframe. Hot water supply equipment can provide water for domestic use, swimming pools, or other applications.

[0004] Summary of the Invention

[0005] A hot water supply device is provided. The hot water supply device includes a housing, a water tank, a main unit, a pipeline, a water receiving tray, and a safety valve. The water tank is disposed in the housing. The water tank includes an inner tank. A cavity is provided in the inner tank. The main unit is disposed in the housing and is located on the upper side of the water tank. The main unit is connected to the water tank and is configured to supply water and heat to the water tank. The pipeline is disposed in the main unit and the water tank, and the main unit and the water tank are connected through the pipeline. The water receiving tray is disposed between the main unit and the water tank and is respectively connected to the main unit and the water tank. The pipeline is provided through the water receiving tray. The water receiving tray includes a bottom plate and a first through hole. The first through hole is provided on the bottom plate. The safety valve is provided through the first through hole. A portion of the safety valve is located on the side of the water receiving tray away from the water tank. The other part extends into the cavity of the inner tank, and the other part is located on a side of the cavity close to the water receiving tray. The safety valve is configured to relieve pressure on the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] To more clearly illustrate the technical solutions of the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. However, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can also derive other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the products involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signals, etc.

[0007] FIG1 is a structural diagram of a hot water supply device according to some embodiments;

[0008] FIG2 is a structural diagram of a hot water supply device without a housing according to some embodiments;

[0009] FIG3 is a structural diagram of a hot water supply device with the housing removed from another perspective according to some embodiments;

[0010] FIG4 is a structural diagram of a hot water supply device with the housing removed from another perspective according to some embodiments;

[0011] FIG5 is an exploded view of a hot water supply device according to some embodiments;

[0012] FIG6 is an exploded view of a hot water supply device according to some embodiments from another perspective;

[0013] FIG7 is a structural diagram of a second side plate in a housing according to some embodiments;

[0014] FIG8 is a partial enlarged view of the circle A in FIG7 ;

[0015] FIG9 is a partial enlarged view of the area circled B in FIG7 ;

[0016] FIG10 is a structural diagram of a first sub-side plate in a housing according to some embodiments;

[0017] FIG11 is a structural diagram of a second sub-side plate in a housing according to some embodiments;

[0018] FIG12 is a structural diagram of a fifth side plate in a housing according to some embodiments;

[0019] FIG13 is a partial enlarged view of circle C in FIG12;

[0020] FIG14 is a structural diagram of a water tank of a hot water supply device according to some embodiments;

[0021] FIG15 is a cross-sectional view of FIG14;

[0022] FIG16 is a partial enlarged view of circle D in FIG15 ;

[0023] FIG17 is a structural diagram of a main device of a hot water supply device according to some embodiments;

[0024] FIG18 is a structural diagram of a connection plate according to some embodiments;

[0025] FIG19 is another structural diagram of a hot water supply device with the housing removed according to some embodiments;

[0026] FIG20 is a partial enlarged view of circle E in FIG19 ;

[0027] FIG21 is a partial enlarged view of circle F in FIG19 ;

[0028] FIG22 is another structural diagram of a hot water supply device with the housing removed according to some embodiments;

[0029] FIG23 is a partial enlarged view of circle G in FIG22;

[0030] FIG24 is a structural diagram of a water receiving tray in a hot water supply device according to some embodiments;

[0031] FIG25 is a structural diagram of a water receiving tray in a hot water supply device according to some embodiments from another perspective;

[0032] FIG26 is a rear view of a hot water supply apparatus according to some embodiments;

[0033] FIG27 is a structural diagram of a blocking member in a hot water supply device according to some embodiments;

[0034] FIG28 is a block diagram of a hot water supply apparatus according to some embodiments;

[0035] FIG29 is a structural diagram of a water tank in a hot water supply device according to some embodiments;

[0036] FIG30 is a flow chart of a controller of a hot water supply device according to some embodiments;

[0037] FIG31 is another structural diagram of a hot water supply device according to some embodiments;

[0038] FIG32 is another flow chart of a controller of a hot water supply device according to some embodiments;

[0039] FIG33 is another flow chart of a controller of a hot water supply device according to some embodiments;

[0040] FIG34 is another flow chart of a controller of a hot water supply device according to some embodiments;

[0041] FIG. 35 is yet another flow chart of a controller of a hot water supply device according to some embodiments. DETAILED DESCRIPTION

[0042] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0043] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0044] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0045] When describing some embodiments, the word "connected" and its derivatives may be used. The term "connected" should be understood broadly. For example, "connected" can mean fixed, removable, or integrated; it can be directly connected or indirectly connected through an intermediary. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0046] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0047] As used herein, the term "if" is optionally interpreted to mean "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined that" or "if [stated condition or event] is detected" are optionally interpreted to mean "upon determining" or "in response to determining" or "upon detecting [stated condition or event]" or "in response to detecting [stated condition or event]," depending on the context.

[0048] The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0049] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0050] As used herein, "parallel," "perpendicular," and "equal" include the stated conditions and conditions approximating the stated conditions within an acceptable range of deviation as determined by one of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0051] In this document, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., to indicate orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to has a specific orientation, is constructed and operates in a specific orientation, and therefore cannot be understood as limiting the present disclosure.

[0052] For ease of description, the directions of up, down, left, right, front, and back in this disclosure are all based on the state of the hot water supply device when in use. The side of the hot water supply device facing the user when in use is defined as the front side, and the opposite side is defined as the back side.

[0053] Typically, hot water supply systems use a water tank to store water and heat it using a heating device to produce hot water. During the heating process, some of the water in the tank evaporates, generating steam. As a pressure-bearing component of hot water supply systems, the water in the tank generates more steam when the temperature is high. This leads to higher pressure in the tank, which can easily cause the tank to burst, posing a safety hazard.

[0054] In order to solve the above problems, some embodiments of the present disclosure provide a hot water supply device 100.

[0055] FIG. 1 is a structural diagram of a hot water supply device according to some embodiments.

[0056] As shown in Figure 1, the present application provides a hot water supply device 100, which includes a main device 1, a water tank 2, a housing 3, and a base 4. The main device 1 is configured to supply heat and water to the water tank 2. The water tank 2 is configured to store water.

[0057] The housing 3 is mounted on the base 4 and houses the main unit 1 and water tank 2, thereby limiting and protecting them. The water tank 2 is mounted on the base 4, which protects the bottom of the water tank 2 from moisture. The main unit 1 is mounted on the side of the water tank 2 (the upper side) away from the base 4 and is connected to the water tank 2. The main unit 1 and water tank 2 are arranged along a first direction to reduce the footprint of the hot water supply device 100.

[0058] It should be noted that the first direction is substantially parallel to the height direction of the hot water supply device 100 (refer to the up-down direction shown in FIG1 ). The main unit 1 is part of an external heating device (such as a heat pump or a solar energy supply device), and the main unit 1 can transfer heat provided by the external heating device to the water tank 2 to heat the water.

[0059] In some embodiments, the housing 3 may be prism-shaped. For example, as shown in FIG1 , the housing 3 may be quadrangular-shaped to facilitate placement of the hot water supply device 100 .

[0060] Figure 2 is a structural diagram of a hot water supply device with the housing removed according to some embodiments. Figure 3 is a structural diagram of a hot water supply device with the housing removed from another perspective according to some embodiments. Figure 4 is a structural diagram of a hot water supply device with the housing removed from yet another perspective according to some embodiments.

[0061] 2 and 3 , the hot water supply device 100 further includes a first frame 11. The first frame 11 is located at the outermost side of the main body 1 and is used to define the shape of the main body 1. The first frame 11 includes a first sub-frame 111 and a second sub-frame 112.

[0062] For example, as shown in Figures 2 and 3, the first frame 11 includes two first sub-frames 111 and four second sub-frames 112. The two first sub-frames 111 are each square-shaped and are located on either side (e.g., the left and right sides) of the main device 1 in the second direction. The two first sub-frames 111 extend along the first direction. The four second sub-frames 112 are each linear and are located between the two first sub-frames 111 and extend along the second direction. For example, the two ends of the second sub-frames 112 are connected to two opposite corners of the two first sub-frames 111. Of the four second sub-frames 112, two are located on the side (front side) of the main device 1 that is close to the fourth side panel 34 (e.g., the front side panel), and one second sub-frame 112 is closer to the base 4 than the other second sub-frames 112. The other two second sub-frames 112 are located on the side (rear side) of the main device 1 that is away from the fourth side panel 34, and one second sub-frame 112 is closer to the base 4 than the other second sub-frames 112. The fourth side plate 34 will be described later.

[0063] It should be noted that the second direction is substantially parallel to the longitudinal direction of the hot water supply device 100 (refer to the left-right direction shown in FIG. 1 ).

[0064] In some embodiments, as shown in Figures 2 and 4, the first frame 11 further includes a third sub-frame 113 and a fourth sub-frame 114. The third sub-frame 113 and the fourth sub-frame 114 are respectively arranged on the two first sub-frames 111. In addition, the third sub-frame 113 is located on the side of the main device 1 close to the second side panel 32 (right side). The fourth sub-frame 114 is located on the side of the main device 1 close to the third side panel 33 (left side). The third sub-frame 113 and the fourth sub-frame 114 are respectively connected to the corresponding first sub-frames 111 to improve the structural strength of the first frame 11 and prevent the first frame 11 from bending. The second side panel 32 and the third side panel 33 will be described later.

[0065] Figure 5 is an exploded view of a hot water supply device according to some embodiments. Figure 6 is an exploded view of a hot water supply device according to some embodiments from another perspective.

[0066] In some embodiments, as shown in Figures 5 and 6, the shell 3 includes a first side panel 31, a second side panel 32, a third side panel 33, a fourth side panel 34, and a fifth side panel 35. The first side panel 31 is arranged opposite to the base 4 and is parallel to the plane in which the second direction and the third direction are located. The second side panel 32, the third side panel 33, the fourth side panel 34, and the fifth side panel 35 are respectively arranged on the side (lower side) of the first side panel 31 close to the base 4 and are respectively connected to the first side panel 31. The second side panel 32 is arranged opposite to the third side panel 33, and the fourth side panel 34 is arranged opposite to the fifth side panel 35. For example, the second side panel 32 is arranged on the side (right side) of the main unit 1 and the water tank 2 away from the third side panel 33, and the fourth side panel 34 is arranged on the side (front side) of the main unit 1 and the water tank 2 away from the fifth side panel 35. The fifth side panel 35 is used to limit and protect the main unit 1 and the water tank 2. The second side plate 32 , the third side plate 33 , the fourth side plate 34 and the fifth side plate 35 extend along the first direction respectively.

[0067] It should be noted that the third direction is substantially parallel to the width direction of the hot water supply device 100 (refer to the front-to-back direction shown in FIG. 1 ).

[0068] FIG. 7 is a structural diagram of a second side plate in a housing according to some embodiments.

[0069] 7 , the second side panel 32 includes a second side panel body 320 and a first flange 321 . The first flange 321 is disposed around the second side panel body 320 and extends toward the third side panel 33 .

[0070] In some examples, as shown in FIG7 , the first flange 321 includes a first sub-flange 3211, a second sub-flange 3212, a third sub-flange 3213, and a fourth sub-flange 3214. The first sub-flange 3211 is disposed opposite the second sub-flange 3212. For example, the first sub-flange 3211 is disposed on a side (upper side) of the second side panel body 320 away from the base 4. The third sub-flange 3213 is disposed opposite the fourth sub-flange 3214. For example, the third sub-flange 3213 is disposed on a side (front side) of the second side panel body 320 closer to the fourth side panel 34.

[0071] Figure 8 is a partial enlarged view of the circle A in Figure 7. Figure 9 is a partial enlarged view of the circle B in Figure 7.

[0072] In some embodiments, as shown in Figures 7 and 8, the third sub-flange 3213 has a first connection hole 361. As shown in Figure 9, the fourth sub-flange 3214 is provided with a first hook set 371. In addition, the second side plate 32 and the third side plate 33 have the same shape and size.

[0073] In some embodiments, the second side panel 32 includes multiple screw holes. For example, the second side panel 32 includes three screw holes, one located at the bottom, one at the middle, and one at the top of the third sub-flange 3213. In this case, corresponding screw holes are provided on the base 4, located on the side (front) of the base 4 near the fourth side panel 34. The screw holes at the bottom of the third sub-flange 3213 can mate with the screw holes in the base 4 to securely connect the base 4 to the housing 3 via screws.

[0074] Since the third side plate 33 has a similar structure to the second side plate 32 , corresponding portions of the third side plate 33 are also provided with screw holes, first connection holes 361 and a first hook set 371 .

[0075] In some embodiments, as shown in FIG5 , the fourth side panel 34 includes a first sub-side panel 341 and a second sub-side panel 342. The first sub-side panel 341 is connected to the second sub-side panel 342, and the second sub-side panel 342 is located on a side (lower side) of the first sub-side panel 341 that is closer to the base 4. The first sub-side panel 341 and the second sub-side panel 342 are separate components.

[0076] FIG10 is a structural diagram of a first sub-side plate in a housing according to some embodiments.

[0077] 10 , the first sub-side plate 341 includes a first sub-side plate body 340 and a second flange 343. The second flange 343 surrounds the first sub-side plate body 340 and extends toward the main device 1.

[0078] In some embodiments, as shown in FIG10 , the first sub-side panel 341 further includes a connecting assembly 345 , which is disposed on the first sub-side panel body 340 on a side (rear side) close to the main device 1 , and is located on a side (upper side) of the first sub-side panel body 340 away from the water tank 2 , and on a side (rear side) of the first sub-side panel body 340 close to the main device 1 . The first sub-side panel 341 is connected to the first frame 11 via the connecting assembly 345 .

[0079] For example, as shown in Figure 10, the connecting assembly 345 includes a first flat plate 3450 and two second flat plates 3451, with the two second flat plates 3451 being disposed on either side of the first flat plate 3450. Screw holes are provided on the first flat plate 3450. Of the two second sub-frames 112 located on the front side of the main device 1, the second sub-frame 112 furthest from the water tank 2 is provided with screw holes that mate with the screw holes on the first flat plate 3450 to securely connect the connecting assembly 345 to the second sub-frames 112 via screws.

[0080] In some embodiments, in the first direction, the height of the first sub-side panel 341 is greater than the height of the first frame 11, so that the connecting assembly 345 can be arranged above the first frame 11. In this way, screws can be inserted through the connecting assembly 345 and the second sub-frame 112 along the first direction to fix the first sub-side panel 341.

[0081] In some embodiments, as shown in FIG10 , the first sub-side panel 341 further includes a viewing window 7 . The viewing window 7 is disposed on and extends through the first sub-side panel body 340 . The viewing window 7 is used to secure a wired controller 6 . The hot water supply device 100 further includes a wired controller 6 , which is disposed on the viewing window 7 so that the user can easily view the wired controller 6 through the viewing window 7 . The wired controller 6 is configured to set parameters of the hot water supply device 100 .

[0082] FIG. 11 is a structural diagram of a second sub-side plate in a housing according to some embodiments.

[0083] In some embodiments, as shown in FIG11 , the second sub-side panel 342 includes a second sub-side panel body 346 and a third flange 347. The third flange 347 is disposed around the second sub-side panel body 346 and extends toward a side (the rear side) proximal to the fifth side panel 35. A second hook set 372 is provided on the third flange 347, and the second hook set 372 is connected (e.g., clipped) to the first connection hole 361 to securely connect the second sub-side panel 342 to the second side panel 32 and the third side panel 33.

[0084] In some embodiments, the third flange 347 has an insertion hole, which is corresponding to the plug-in portion 344 of the first sub-side plate 341. The plug-in portion 344 is plugged into the insertion hole to fix the first sub-side plate 341 and the second sub-side plate 342 together.

[0085] In some embodiments, as shown in Figure 11, the second sub-side panel 342 also includes a first mounting piece 348. The first mounting piece 348 is arranged on the third flange 347 and is close to the first sub-side panel 341. The first mounting piece 348 extends in a direction close to the first sub-side panel 341. The first mounting piece 348 is provided with a screw hole. The first frame 11 is located on the side (rear side) of the first mounting piece 348 close to the main device 1, and the first sub-frame 111 and the second sub-frame 112 are respectively provided with screw holes corresponding to the screw holes of the first mounting piece 348. Screws can be passed through the first mounting piece 348, the first sub-frame 111 and the second sub-frame 112 to fix the first mounting piece 348, the first sub-frame 111 and the second sub-frame 112 in connection.

[0086] In some embodiments of the present disclosure, the provision of a connection assembly 345 and a first mounting plate 348 eliminates the need for screw holes on the side of the fourth side panel 34 facing away from the main unit 1 (the front side) or on both sides (the left and right sides) of the fourth side panel 34. This allows the screw holes on the first and second sub-side panels 341, 342 to be obscured after installation, improving the aesthetics of the hot water supply device 100. Furthermore, when the main unit 1 or water tank 2 requires repair, only the first or second sub-side panel 341, 342 need to be removed for maintenance, facilitating inspection of the hot water supply device 100.

[0087] Figure 12 is a structural diagram of a fifth side plate in a housing according to some embodiments. Figure 13 is a partial enlarged view of circle C in Figure 12 .

[0088] In some embodiments, as shown in Figures 12 and 13, the fifth side panel 35 includes a fifth side panel body 350 and a fourth flange 353. The fourth flange 353 is arranged at the edge of the fifth side panel body 350 and extends in a direction close to the fourth side panel 34. For example, the fourth flange 353 includes a fifth sub-flange 3521, a sixth sub-flange 3522, and a seventh sub-flange 3523. The fifth sub-flange 3521 is arranged on the side (upper side) of the fifth side panel body 350 away from the base 4, and the sixth sub-flange 3522 and the seventh sub-flange 3523 are arranged opposite each other. For example, the sixth sub-flange 3522 and the seventh sub-flange 3523 are respectively arranged on both sides (left and right sides) of the fifth side panel body 350. The sixth sub-flange 3522 has a second connecting hole 362 for connecting with the first hook group 371 of the second side panel 32. Similarly, the seventh sub-flange 3523 also has a second connection hole 362 for connecting with the first hook set 371 of the third side plate 33 .

[0089] In some embodiments, the fifth side plate 35 is connected to the first frame 11. The fifth side plate 35 is provided with a plurality of screw holes, and the second sub-frame 112 located at the rear side of the main device 1 is provided with corresponding screw holes.

[0090] For example, the fifth side plate 35 has six screw holes. Three screw holes are located on the upper portion of the fifth side plate 35 and are arranged along the second direction. Another three screw holes are located on the fifth side plate 35 and are arranged along the second direction. Furthermore, the three screw holes located on the upper portion of the fifth side plate 35 are located directly above the other three screw holes.

[0091] In this case, the first frame 11 includes six corresponding screw holes. Of the six screw holes in the first frame 11, three are located on a side (rear side) of a second sub-frame 112 located on the rear side of the main device 1 that is away from the main device, and are arranged along the second direction; the other three are located on a side (rear side) of another second sub-frame 112 located on the rear side of the main device 1 that is away from the main device, and are arranged along the second direction. The six screw holes in the first frame 11 correspond to the six screw holes in the fifth side plate 35, so that the screws pass through the six screw holes in the first frame 11 and the six screw holes in the fifth side plate 35, thereby fixing the fifth side plate 35 to the first frame 11.

[0092] In some embodiments, the fourth side panel 34 has the same size as the fifth side panel 35. For example, the height of the fourth side panel 34 is the same as the height of the fifth side panel 35, and the width of the fourth side panel 34 is the same as the width of the fifth side panel 35, so as to improve the aesthetics of the hot water supply device 100.

[0093] In some embodiments, the ends of the second side panel 32 , the third side panel 33 , the fourth side panel 34 and the fifth side panel 35 away from the base 4 (such as the upper end) have the same height so that the first side panel 31 is in a horizontal plane, thereby facilitating the installation of the first side panel 31 .

[0094] In some embodiments, the first side plate 31 may be a sheet metal member having a uniform thickness.

[0095] Figure 14 is a structural diagram of a water tank of a hot water supply device according to some embodiments. Figure 15 is a cross-sectional view of Figure 14. Figure 16 is a partial enlarged view of circle D in Figure 15.

[0096] In some embodiments, as shown in Figures 14 to 16 , the hot water supply device 100 further includes a pipeline 8 . The pipeline 8 is disposed within the main device 1 and the water tank 2 , connecting the main device 1 and the water tank 2 via the pipeline 8 . The pipeline 8 includes a heating coil 80 , an inlet pipe 83 , and an outlet pipe 84 . The heating coil 80 is configured to transfer heat to the water in the water tank 2 , thereby heating the water. The inlet pipe 83 and the outlet pipe 84 extend from the top of the main device 1 into the water tank 2 . The inlet end of the inlet pipe 83 and the outlet end of the outlet pipe 84 are respectively located above the first side panel 31 . The inlet pipe 83 is configured to deliver water from an external water source to the water tank 2 . The outlet pipe 84 is configured to discharge the water from the water tank 2 . The water flowing out of the outlet pipe 84 can be used for domestic use, swimming pool water, or other purposes. For example, the outlet pipe 84 can be connected to a faucet, floor heating, or shower to meet user needs.

[0097] In some embodiments, as shown in FIG5 , the housing 3 further includes a first mounting opening 311. The first mounting opening 311 is disposed on the first side panel 31 and is adjacent to the fifth side panel 35. The outlet and inlet ends of the heating coil 80 are respectively disposed through the first mounting opening 311, and the outlet and inlet ends of the heating coil 80 extend in a direction away from the water tank 2.

[0098] In some embodiments, as shown in Figure 15, the heating coil 80 includes a first coil 81 and a second coil 82. The first coil 81 is connected to a heat pump located outside the hot water supply device 100, and is configured to supply heat to the water in the water tank 2 to heat the water. The inlet end and the outlet end of the first coil 81 are respectively located on the side (upper side) of the first side plate 31 away from the base 4. The first coil 81 includes a first sub-coil and a second sub-coil. The first sub-coil is arranged in the main body device 1. The second sub-coil is arranged in the water tank 2. The first sub-coil is connected to the second sub-coil. The heat transmitted by the heat pump enters the second sub-coil through the first sub-coil to heat the water in the water tank 2.

[0099] The second coil 82 is connected to a solar heating device located outside the hot water supply apparatus 100 and is configured to supply heat to the water in the water tank 2 to heat the water. The inlet and outlet ends of the second coil 82 are respectively located on the upper side of the first side panel 31. The second coil 82 includes a third sub-coil and a fourth sub-coil. The third sub-coil is disposed within the main unit 1. The fourth sub-coil is disposed within the water tank 2 and is connected to the fourth sub-coil. Heat transmitted by the solar energy supply device passes through the third sub-coil and enters the fourth sub-coil to heat the water in the water tank 2.

[0100] In some embodiments, as shown in FIG15 , the hot water supply device 100 further includes an electric heater 85. The electric heater 85 is disposed on the water tank 2, with at least a portion of the electric heater 85 extending into the water tank 2. The electric heater 85 is configured to heat the water in the water tank 2. The electric heater 85 is disposed on a side (upper side) of the second and fourth sub-coils that is away from the base 4 to provide additional heat to the water tank 2.

[0101] The user can select at least one of the solar energy supply device, the heat pump, and the electric heater 85 through the wired controller 6 to heat the water in the water tank 2 according to different situations.

[0102] For example, when the second coil 82 is unable to heat the water in the water tank 2 to the set temperature due to insufficient sunlight, the water in the water tank 2 can be heated by using at least one of the first coil 81 or the electric heater 85 .

[0103] When the heat pump has difficulty heating the water in the water tank 2 to the set temperature due to the low temperature of the external environment or the heat pump is in a frosted state, the water in the water tank 2 can be heated by using at least one of the second coil 82 or the electric heater 85.

[0104] When there is insufficient sunlight and the ambient temperature is low, the water in the water tank 2 can be heated to a set temperature by using the electric heater 85 .

[0105] Of course, the user can also select at least one of the second coil 82, the first coil 81 or the electric heater 85 to heat the required amount of water to the set temperature to meet the heat demand.

[0106] In some embodiments, the first coil 81 has heating and cooling functions. That is, the first coil 81 can heat or cool the water in the water tank 2 to meet the user's needs for hot water and cold water.

[0107] For example, when the first coil 81 serves as the evaporator of the heat pump, the outdoor heat exchanger of the heat pump serves as the condenser. The refrigerant condenses and releases heat in the outdoor heat exchanger of the heat pump. The refrigerant evaporates in the first coil 81 and absorbs heat from the water in the water tank 2 to lower the temperature of the water in the water tank 2, thereby cooling the water in the water tank 2.

[0108] When the first coil 81 serves as the condenser of the heat pump, the outdoor heat exchanger of the heat pump serves as the evaporator. The refrigerant evaporates in the outdoor heat exchanger of the heat pump and absorbs heat from the outdoor environment. The refrigerant condenses in the first coil 81 and releases heat to the water in the water tank 2 to increase the temperature of the water in the water tank 2, thereby heating the water in the water tank 2.

[0109] In some embodiments, the portion of the first coil 81 located in the water tank 2 (the second sub-coil) and the portion of the second coil 82 located in the water tank 2 (the fourth sub-coil) are concentrically or eccentrically arranged. Furthermore, the portions of the first coil 81 and the second coil located in the water tank 2 are located near the bottom of the water tank 2 to disturb the bottom water flow within the water tank 2, thereby enhancing the heat exchange efficiency between the first coil 81 and the second coil 82 and the water.

[0110] It should be noted that the concentric arrangement of the first coil 81 and the second coil 82 may mean that the central axis of the spiral extension trajectory of the first coil 81 coincides with the central axis of the spiral extension trajectory of the second coil 82. The eccentric arrangement of the first coil 81 and the second coil 82 may mean that the central axis of the spiral extension trajectory of the first coil 81 and the central axis of the spiral extension trajectory of the second coil 82 do not coincide. Furthermore, parameters such as the heat exchange area, tube type, and tube length of the first coil 81 and the second coil 82 can be selected based on heating requirements.

[0111] For example, the layout of the first and second coils 81, 82 is determined based on their respective lengths. If the first coil 81 is longer than the second coil 82, the portion of the first coil 81 located within the water tank 2 is located on the side (outside) of the portion of the second coil 82 located within the water tank 2 that is closer to the housing 3. If the second coil 82 is longer than the first coil 81, the portion of the first coil 81 located within the water tank 2 is located on the side (inside) of the portion of the second coil 82 located within the water tank 2 that is farther from the housing 3.

[0112] FIG. 17 is a structural diagram of a main body device of a hot water supply device according to some embodiments.

[0113] In some embodiments, as shown in FIG17 , the hot water supply device 100 further includes a nut 87 and a connector 88 . One end of the nut 87 is connected to one end (the inlet or outlet) of the heating coil 80 , and the other end is connected to the connector 88 . For example, the nut 87 may have a threaded hole, and the portion of the heating coil 80 near the nut 87 (e.g., the upper portion of the heating coil) may be provided with external threads. This portion is threadedly engaged with the nut 87 .

[0114] FIG. 18 is a structural diagram of a connection plate according to some embodiments.

[0115] In some embodiments, as shown in Figures 16 and 18 , the hot water supply device 100 further includes a connecting plate 12. The connecting plate 12 is connected to a portion (e.g., the top) of the first frame 11 near the first side panel 31, and includes a third through hole 611. The connecting portion 88 is disposed through the third through hole 611.

[0116] For example, as shown in FIG18 , the connecting plate 12 includes a first sub-connecting plate 121 and a second sub-connecting plate 122. The first sub-through hole 1210 is defined on the first sub-connecting plate 121, and the second sub-through hole 1220 is defined on the second sub-connecting plate 122. One side of the first sub-through hole 1210 and the second sub-through hole 1220 are open, and the opening directions of the first sub-through hole 1210 and the second sub-through hole 1220 are opposite. The first sub-connecting plate 121 and the second sub-through hole 1220 are plugged together so that the first sub-through hole 1210 and the second sub-through hole 1220 partially overlap, forming the third through hole 611. During installation, the connecting portion 88 can be inserted from the open side of the first sub-through hole 1210, and then the first sub-connecting plate 121 and the second sub-connecting plate 122 are plugged together to securely clamp the connecting portion 88 to the connecting plate 12.

[0117] In some embodiments, as shown in FIG17 , the hot water supply device 100 includes two connecting plates 12. In the second direction, the length of one connecting plate 12 can be the same as the distance between the two first sub-frames 111, so that the connecting plate 12 can be installed between the tops of the two first sub-frames 111. The length of the other connecting plate 12 in the second direction is less than or equal to the length of the first connecting plate 12, and the other connecting plate 12 is connected to the angle between the first sub-frame 111 and the second sub-frame 112 connected to the first sub-frame 111.

[0118] In some embodiments, the hot water supply device 100 further includes a connecting pipe. The connecting pipe is disposed on a side (upper side) of the heating coil 80 away from the base 4 . One end of the connecting pipe is connected to one end of the heating coil 80 (e.g., the outlet or inlet end of the heating coil 80 ), and the other end is connected to a heat pump or solar energy supply device. For example, the connecting pipe is connected to the heating coil 80 via a connecting portion 88 . In this manner, the hot water supply device 100 can exchange heat with the heat pump or solar energy supply device via the connecting pipe.

[0119] In some embodiments, the hot water supply device 100 further includes a power cord. The power cord is mounted on the connection plate 12. One end of the power cord (the wiring port / outlet) is located above the first side panel 31, and the other end of the power cord extends into the mounting opening 311. The power cord of an external power source is arranged above the hot water supply device 100 and is connected to the one end of the power cord. Because the mounting opening 311 is close to the fifth side panel 35, the power cord of the external power source connected to the power cord can be located on the rear side of the hot water supply device 100.

[0120] Figure 19 is another structural diagram of a hot water supply device with the housing removed according to some embodiments. Figure 20 is a partial enlarged view of circle E in Figure 19. Figure 21 is a partial enlarged view of circle F in Figure 19.

[0121] In some embodiments, as shown in FIG19 , the main device 1 includes an electrical box 89. The electrical box 89 is disposed within the first frame 11 and is close to the fourth side panel 34. Thus, when the fourth side panel 34 is removed, the electrical box 89 can be directly seen.

[0122] In some embodiments, as shown in Figures 19 to 21, the electrical box 89 includes a box body 891, a door body 892, a first rotating shaft 893, and a second rotating shaft 894. The box body 891 can be a sheet metal part, and the side (front side) of the box body 891 near the fourth side panel 34 is open to form a first opening. The door body 892 is arranged on the front side of the box body 891 and is configured to open or close the first opening. The size and shape of the door body 892 match the size and shape of the first opening so that the door body 892 can completely close the first opening. In addition, the door body 892 is pivotally connected to the box body 891 via the first rotating shaft 893. For example, one side of the door body 892 (such as the left or right side) is pivotally connected to the box body 891 via the first rotating shaft 893. The second rotating shaft 894 is connected to the first frame 11 and the box body 891 respectively, so that the box body 891 can be pivotally connected to the first frame 11 via the second rotating shaft 894. For example, one side (eg, the left side or the right side) of the box body 891 is pivotally connected to the first frame 11 via the second rotating shaft 894 .

[0123] In some embodiments, the electrical box 89 further includes components. The components are located within the box body 891. When the components are damaged, the components within the box body 891 can be directly replaced or repaired by simply opening the door 892, thereby facilitating the inspection of the electrical box 89.

[0124] Figure 22 is another structural diagram of a hot water supply device according to some embodiments with the housing removed. Figure 23 is a partial enlarged view of circle G in Figure 22. It should be noted that in order to illustrate the structure of the rear side of the electrical box 89, Figure 22 removes the electrical box 89.

[0125] In some embodiments, as shown in Figures 22 and 23, the main device 1 further includes a water pump 13, an electric heating element 14, and an electric three-way valve 15. An installation space is provided on the side (rear side) of the electrical box 89 away from the fourth side panel 34. The water pump 13, the electric heating element 14, and the electric three-way valve 15 are each located within the installation space and adjacent to the electrical box 89.

[0126] When at least one of the water pump 13, the electric heating component 14 and the electric three-way valve 15 is damaged, just remove the first sub-side panel 341 and then rotate the electrical box 89 around the second rotating shaft 894 to directly see the water pump 13, the electric heating component 14 and the electric three-way valve 15, which is convenient for maintenance and replacement of the main unit 1.

[0127] In some embodiments, as shown in FIG15 , the water tank 2 includes an inner liner 21 and a wrapping layer 22 . The inner liner 21 has a cavity 211 therein. The cavity 211 is used to hold water. The wrapping layer 22 is sleeved on the outer side of the inner liner 21 .

[0128] In some embodiments, the inner liner 21 is a single piece. Compared to a split inner liner 21, a single piece inner liner 21 can reduce water leakage, thereby increasing the service life of the inner liner 21.

[0129] In some embodiments, the water tank 2 can be prepared using an integrated foaming process. For example, a second opening is provided at one end of the inner liner 21. The inner liner 21 is placed and fixed so that the end of the inner liner 21 provided with the second opening faces downward. After an isolation bag is sleeved on the outside of the inner liner 21, a foaming mold is sleeved on the outside of the isolation bag to squeeze the isolation bag so that it fits the inner liner 21. Then, a foaming filler is injected into the sealed cavity between the foaming mold and the inner liner 21 sleeved with the isolation bag. The foaming filler foams and solidifies in the sealed cavity to form a wrapping layer 22. After the foaming filler has completed foaming, the wrapping layer 22 is taken out and placed according to the installation position in the hot water supply device 100 to remove the isolation bag in the wrapping layer 22, thereby obtaining the wrapping layer 22.

[0130] In some embodiments, the inner liner 21 includes a first end cap, a second end cap, and a body. The body is connected between the first end cap and the second end cap. The inner liner 21 can be made of stainless steel.

[0131] In some embodiments, the wrapping layer 22 may be made of a polyurethane rigid foam material to keep the inner liner 21 warm, thereby reducing heat exchange between the inner liner 21 and the external environment.

[0132] In some embodiments, the cross-section of the wrapping layer 22 on the horizontal plane may be a polygon (eg, a hexagon) to improve the supporting strength of the wrapping layer 22 .

[0133] In some embodiments, as shown in FIG14 , the hot water supply device 100 further includes a water receiving tray 5. The water receiving tray 5 is disposed between the water tank 2 and the main device 1 and is connected to the main device 1 and the water tank 2.

[0134] In some embodiments, the water tray 5 includes multiple screw holes. For example, the water tray 5 includes four screw holes, and corresponding screw holes are provided at each end of the two second sub-frames 112 located on the front side of the first frame 11. The four screw holes in the water tray 5 mate with the four screw holes in the first frame 11, thereby securing the first frame 11 to the water tray 5 via screws.

[0135] In some embodiments, the hot water supply device 100 further includes an anode rod and a first temperature sensor 101 (as shown in FIG15 ). At least one portion of the electric heater 85, at least one portion of the anode rod, and at least one portion of the first temperature sensor 101 respectively extend into the cavity 211 of the inner tank 21. The anode rod is used to prevent water from corroding the inner tank 21. The first temperature sensor 101 is used to detect the water temperature in the water tank 2. It should be noted that the anode rod can be a magnesium rod. Through the principle of electrochemical corrosion protection, the magnesium rod is used as the anode and the metal inner tank (inner tank 21) is used as the cathode, so that the sacrificial anode protects the cathode to protect the metal inner tank.

[0136] In some embodiments, as shown in Figure 19, the hot water supply device 100 further includes a first mounting hole 612. The first mounting hole 612 is located in the middle of the water tank 2. The electric heater 85 is installed in the first mounting hole 612, and the electric heater 85 extends along the second direction.

[0137] For example, as shown in Figure 19, the water tank 2 also includes a second mounting hole 614 and a third mounting hole 613. The anode rod is arranged in the third mounting hole 613. The first temperature sensor 101 is arranged in the second mounting hole 614. The first mounting hole 612, the second mounting hole 614 and the third mounting hole 613 are arranged in sequence in a direction away from the base 4, and pass through the wrapping layer 22 and the inner tank 21 in sequence to communicate with the cavity 211. When at least one of the anode rod, the first temperature sensor 101 and the electric heater 85 is damaged, the anode rod, the first temperature sensor 101 and the electric heater 85 can be directly inspected by disassembling the second sub-side plate 342, which facilitates the maintenance of the hot water supply equipment 100.

[0138] In some embodiments, a drain outlet is provided in a portion (lower portion) of the water tank 2 located at the front side and close to the base 4. The drain outlet is configured to discharge the filtered sewage in the water tank 2. In addition, if the drain outlet is blocked and cannot operate normally, the drain outlet can be inspected and repaired by simply removing the second sub-side panel 342.

[0139] In some embodiments, as shown in Figure 14 , the hot water supply device 100 further includes a water receiving tray 5 . The water receiving tray 5 is positioned between the water tank 2 and the main unit 1 and is connected to both the main unit 1 and the water tank 2. This allows the water tank 2 to support the water receiving tray 5 , which in turn supports the main unit 1. This eliminates the need for additional support components between the water tank 2 and the main unit 1, reducing the number of components in the hot water supply device 100 and lowering costs. Furthermore, the water receiving tray 5 is positioned on the side of the wrapping layer 22 away from the base 4 (the upper side), which reduces heat loss from the wrapping layer 22 on its upper side.

[0140] In some embodiments, the water receiving tray 5 includes a plurality of screw holes. For example, the water receiving tray 5 includes four screw holes. In this case, as shown in Figure 17, the first sub-frame 111 includes a first sub-connecting plate 1111 and a second sub-connecting plate 1112. The first sub-connecting plate 1111 and the second sub-connecting plate 1112 are arranged along the first direction and are parallel to each other. The second sub-connecting plate 1112 is located on the side of the first sub-connecting plate 1111 close to the water tank 2, and the second sub-connecting plate 1112 is provided with a plurality of (such as two) screw holes. Since the first frame 11 includes two first sub-frames 111, there are a total of 4 screw holes on the second sub-connecting plates 1112 of the two first sub-frames 111 to cooperate with the four screw holes of the water receiving tray 5, so that the first frame 11 is fixedly connected to the water receiving tray 5 by screws.

[0141] Figure 24 is a structural diagram of a water receiving tray in a hot water supply device according to some embodiments. Figure 25 is a structural diagram of a water receiving tray in a hot water supply device according to some embodiments from another perspective. Figure 26 is a rear view of a hot water supply device according to some embodiments.

[0142] In some embodiments, as shown in Figures 24 and 25, the water receiving tray 5 includes a bottom plate 51, a plurality of baffles 52, and a drainage hole 511. The plurality of baffles 52 are arranged around the bottom plate 51, and the plurality of baffles 52 extend in a direction away from the base 4. The drainage hole 511 is provided on the bottom plate 51, and is close to the connection between two adjacent baffles 52. The drainage hole 511 is located at the lowest position of the bottom plate 51. For example, the surface (upper surface) of the bottom plate 51 close to the main device 1 is a slope, and the drainage hole 511 is located at the lowest point of the upper surface of the bottom plate 51, so that condensed water flows from the upper surface of the bottom plate 51 into the drainage hole 511 and is discharged from the drainage hole 511, which is conducive to draining the condensed water in the water receiving tray 5, avoiding water accumulation in the water receiving tray 5, and breeding of bacteria, thereby improving the efficiency of drainage.

[0143] For example, as shown in FIG26 , the hot water supply device 100 further includes a drain pipe 510, and a fourth mounting hole 615 is provided on the housing 3. The fourth mounting hole 615 is provided on the fifth side panel 35, and is located in the middle portion of the fifth side panel 35 and close to one side (e.g., the left or right side) of the fifth side panel 35. The drain pipe 510 is provided through the fourth mounting hole 615 and is connected to the drain hole 511 to quickly drain the condensed water flowing out of the drain hole 511. In addition, the fourth mounting hole 615 is located near the bottom of the water receiving tray 5. In this way, the condensed water in the water receiving tray 5 can flow out along the drain pipe 510 due to gravity, eliminating the need for an additional water pump for drainage.

[0144] In some embodiments, the upper surface of the bottom plate 51 is an inclined plane. A flat surface is easier to clean than a curved surface and can reduce the accumulation of foreign matter.

[0145] In some embodiments, as shown in FIG24 , the water receiving tray 5 includes four baffles 52. In the first direction, the four baffles 52 are higher than the bottom plate 51. In addition, the water receiving tray 5 also includes a plurality of positioning posts 520. The plurality of positioning posts 520 are arranged on a surface (upper surface) of a baffle 52 close to the main device 1, and the plurality of positioning posts 520 are symmetrically arranged. The plurality of positioning posts 520 abut against the outer side of the bottom of the first frame 11 to position the first frame 11, thereby positioning the main device 1, and avoiding positional misalignment between the main device 1 and the water receiving tray 5 during installation.

[0146] In some embodiments, as shown in FIG25 , the water tray 5 further includes reinforcing ribs 53. The ribs 53 are provided on the surface (lower surface) of the bottom plate 51 away from the main device 1 and extend away from the main device 1. The ribs 53 are plugged into a portion (upper portion) of the wrapping layer 22 proximal to the water tray 5, thereby securing the ribs 53 to the wrapping layer 22. Furthermore, the ribs 53 increase the contact area between the water tray 5 and the wrapping layer 22, thereby enhancing the structural strength of the water tray 5 and thereby supporting the main device 1.

[0147] In some embodiments, as shown in FIG16 , the water tray 5 further includes a groove 50 . The groove 50 is disposed on the side (lower side) of the baffle 52 away from the main device 1 . For example, as shown in FIG16 , the baffle 52 includes a first sub-baffle 521 , a second sub-baffle 522 , and a third sub-baffle 523 . One end (lower end) of the first sub-baffle 521 is connected to the bottom plate 51 , and the other end (upper end) is connected to one end of the second sub-baffle 522 . The other end of the second sub-baffle 522 is connected to one end (upper end) of the third sub-baffle 523 . The third sub-baffle 523 is located on the side of the first sub-baffle 521 away from the bottom plate 51 .

[0148] A portion (upper portion) of the wrapping layer 22 near the water receiving tray 5 is protruded to form a protrusion 220. The protrusion 220 is plugged into the groove 50 to increase the contact area between the baffle 52 and the wrapping layer 22, thereby improving the support force of the wrapping layer 22 on the baffle 52 and the strength of the baffle 52.

[0149] In some embodiments, in the first direction, the orthographic projection of the bottom plate 51 on the horizontal plane can cover the orthographic projection of the main device 1 on the horizontal plane, so that the condensed water generated by the main device 1 can flow into the bottom plate 51, preventing the condensed water from flowing to the outside of the water receiving tray 5.

[0150] In some embodiments, as shown in FIG24 , the water receiving tray 5 further includes a plurality of second through holes 616 , and the plurality of second through holes 616 are provided on the bottom plate 51 . The inner diameter of the second through hole 616 is greater than or equal to the outer diameter of the pipeline 8 (such as the heating coil 80 , the first water inlet pipe 83 , and the first water outlet pipe 81 ) so that the pipeline 8 is passed through the second through hole 616 . For example, as shown in FIG24 and FIG25 , the water receiving tray 5 includes six second through holes 616 . Two second through holes 616 are respectively used to install the inlet and outlet ends of the first coil 81 . Two second through holes 616 are respectively used to install the inlet and outlet ends of the second coil 82 . Two second through holes 616 are respectively used to install the first water inlet pipe 83 and the first water outlet pipe 84 . In this way, the heating coil 80 (the first coil 81 and the second coil 82) in the water tank 2 passes through the water receiving tray 5 and is connected to the heating coil 80 in the main device 1, and the first water inlet pipe 83 and the first water outlet pipe 84 in the water tank 2 pass through the water receiving tray 5 and are connected to the first water inlet pipe 83 and the first water outlet pipe 84 in the main device 1 respectively.

[0151] In some embodiments, the outer surfaces of the heating coil 80, the first water inlet pipe 83, and the first water outlet pipe 84 located between the water receiving tray 5 and the inner tank 21 are respectively tightly attached to the wrapping layer 22, and the wrapping layer 22 has a closed-cell structure to prevent condensed water on the pipe 8 from flowing into the wrapping layer 22. The closed-cell structure refers to a structure having multiple spaced cells, and the multiple cells are not connected to each other.

[0152] In some embodiments, as shown in FIG24 , the edge of the second through hole 616 extends away from the water tank 2 to form a fifth flange 363 (flange) for positioning the pipe 8. A gap is provided between the pipe 8 and the inner side of the fifth flange 363 to facilitate application of waterproof glue between the fifth flange 363 and the pipe 8, thereby further preventing condensed water on the surface of the pipe 8 above the water receiving tray 5 from flowing through the second through hole 616 into the wrapping layer 22.

[0153] In some embodiments, since the water receiving tray 5 is disposed on the top of the water tank 2 , the power cord of the water tank 2 can pass through the water receiving tray 5 and be connected to the electrical box 89 .

[0154] In some embodiments, as shown in Figure 14, the hot water supply device 100 further includes a safety valve 86. As shown in Figures 24 and 25, the water receiving tray 5 further includes a first through hole 617, and the safety valve 86 is disposed in the first through hole 617. A portion of the safety valve 86 is located on the side (upper side) of the water receiving tray 5 away from the water tank 2, and another portion of the safety valve 86 extends into the cavity 211 of the inner tank 21, and another portion of the safety valve 86 is located on the side of the cavity 211 close to the water receiving tray 5. The safety valve 86 is configured to relieve pressure on the water tank 2. When the pressure in the water tank 2 is too high or the water temperature exceeds a set value, the safety valve 86 can relieve pressure on the water tank 2 to prevent the water tank 2 from exploding due to excessive pressure or temperature. The safety valve 86 is connected to the electrical box 89 so that the electrical box 89 provides electrical energy to the safety valve 86.

[0155] In some embodiments, the safety valve 86 includes a pressure relief port located on the upper side of the water receiving pan 5. When the safety valve 86 releases pressure from the water tank 2, water discharged from the pressure relief port flows onto the bottom plate 51 of the water receiving pan 5 and then drains through the drain hole 511. This eliminates the need for a separate drain pipe for the safety valve 86, saving costs.

[0156] In some embodiments, the hot water supply device 100 further includes a support foot disposed between the inner tank 21 and the base 4 .

[0157] 22 , the hot water supply device 100 further includes a tray 90, which is disposed on a side of the base 4 away from the water tank 2. The tray 90 may be a wooden structure to prevent electric shock accidents caused by water leakage from the water tank 2.

[0158] FIG. 27 is a structural diagram of a blocking member in a hot water supply device according to some embodiments.

[0159] In some embodiments, as shown in Figure 27, the hot water supply device 100 also includes a blocking member 91. The blocking member 91 is provided at the water outlet end of the first water inlet pipe 83 in the water tank 2. The blocking member 91 has a cylindrical structure. The end of the blocking member 91 away from the first water inlet pipe 83 is closed, and a plurality of water outlet holes 911 are provided on the side of the blocking member 91. Water from an external water source flows into the blocking member 91 from the first water inlet pipe 83, and flows into the inner tank 21 from the plurality of water outlet holes 911. In this way, the water can be evenly discharged into the inner tank 21 through the blocking member 91, thereby preventing the water flowing out of the first water inlet pipe 83 from directly impacting the top of the water tank 2 and affecting the normal water inlet and outlet in the water tank 2.

[0160] FIG. 28 is a block diagram of a hot water supply apparatus according to some embodiments.

[0161] 28 , the hot water supply device 100 further includes a controller 895 located in the electrical box 89 . The first temperature sensor 101 is coupled to the controller 895 so that the controller 895 receives the water temperature detected by the first temperature sensor 101 .

[0162] The controller 895 includes a processor. The processor may include a central processing unit (CPU), a microprocessor, or an application specific integrated circuit (ASIC), and may be configured to perform the corresponding operations described in the controller 895 when the processor executes a program stored in a non-transitory computer-readable medium coupled to the controller 895. The non-transitory computer-readable storage medium may include a magnetic storage device (e.g., a hard disk, a floppy disk, or a tape), a smart card, or a flash memory device (e.g., an erasable programmable read-only memory (EPROM), a card, a stick, or a keyboard drive).

[0163] FIG. 29 is a structural diagram of a water tank in a hot water supply device according to some embodiments.

[0164] As shown in Figure 29, the height of the first temperature sensor 10 is a first height H1, the height of the inner tank 21 is a fifth height H5, and the first height H1 is less than or equal to half of the fifth height H5 (H1 ≤ H5 / 2). The height of the electric heater 85 is a second height He, and the second height He is less than or equal to half of the fifth height H5 (He ≤ H5 / 2). For example, the first temperature sensor 101 is located on the side of the electric heater 85 away from the base 4 (the upper side) and in the middle of the water tank 2.

[0165] 30 is a flow chart of a controller of a hot water supply device according to some embodiments.

[0166] As shown in FIG. 30 , when the first coil 81 or the electric heater 85 is heated, the controller 895 is configured to perform steps 11 to 14 .

[0167] In step 11 , the controller 895 determines the heating time Δt of the first coil 81 or the electric heater 85 .

[0168] For example, when the first coil 81 heats from a first time t1 to a second time t2, the first heating time Δtr (heating time Δt) of the first coil 81 is the difference between the second time t2 and the first time t1 (Δt = t1 - t2). Alternatively, when the electric heater 85 heats from a third time t3 to a fourth time t4, the second heating time Δtd (heating time Δt) of the electric heater 85 is the difference between the fourth time t4 and the third time t3 (Δtd = t4 - t3). It should be noted that the controller 895 includes a timer configured to measure the heating time of the water tank 2. The timer can be implemented in hardware or software.

[0169] In step 12 , the controller 895 calculates the preset temperature T according to the heating time Δt, the first height H1 , and the second height He.

[0170] The preset temperature T satisfies the following formula: T=a×△t+b×H1+c×Hd+d; (1)

[0171] Here, the preset distance Hd is the absolute value of the difference between the first height H1 of the first temperature sensor 101 and the second height He of the electric heater 85 (Hd=|H1-He|), that is, the distance between the first temperature sensor 101 and the electric heater 85. a, b, c, and d are preset parameters.

[0172] In step 13 , the controller 895 calculates the water temperature change ΔT based on the water temperature detected by the first temperature sensor 101 and the heating time Δt.

[0173] For example, when the first coil 81 is heated from a first time t1 to a second time t2, the first temperature sensor 101 detects the water temperature as a first water temperature Tr1 at the first time t1 and as a second water temperature Tr2 at the second time t2. The first change value ΔTr (water temperature change ΔT) is the difference between the second water temperature Tr2 and the first water temperature Tr1 (ΔTr = Tr2 - Tr1). Alternatively, when the electric heater 85 is heated from a third time t3 to a fourth time t4, the first temperature sensor 101 detects the water temperature as a third water temperature Td1 at the third time t3 and as a fourth water temperature Td2 at the fourth time t4. The second change value ΔTd (water temperature change ΔT) is the difference between the fourth water temperature Td2 and the third water temperature Td1 (ΔTd = Td2 - Td1).

[0174] In step 14 , the controller 895 adjusts the operating state of the heat pump or determines the operating state of the electric heater 85 according to the water temperature change ΔT and the preset temperature T.

[0175] When the hot water supply device 100 uses a heat pump to heat water, the first coil 81 supplies heat to the water in the water tank 2. The first coil 81 is heated from the first time t1 to the second time t2. The first temperature sensor 101 detects that the water temperature in the water tank 2 is a first water temperature Tr1 at the first time t1 and a second water temperature Tr2 at the second time t2.

[0176] Based on the first time t1 and the second time t2, the controller 895 calculates the first heating time Δtr (heating time Δt) of the first coil 81. The first heating time Δtr is the absolute value of the difference between the second time t2 and the first time t1 (Δtr=|t2-t1|).

[0177] Then, based on the first heating time Δtr, the first height H1, and the second height He, the controller 895 calculates the first preset temperature T0 (preset temperature T). In this case, a=a1, b=b1, c=0, d=c1 in formula (1), and the first preset temperature T0 satisfies the following formula: T0=a1×Δtr+b1×H1+c1; (2)

[0178] It should be noted that, since the electric heater 85 is in the off state when the hot water supply device 100 only uses the heat pump to heat water, the parameter of the electric heater 85 (preset distance Hd) in formula (1) does not affect the operation of the hot water supply device 100, that is, c=0.

[0179] Then, the controller 895 calculates a first change value ΔTr based on the first water temperature Tr1 and the second water temperature Tr2. The first change value ΔTr is the absolute value of the difference between the second water temperature Tr2 and the first water temperature Tr1 (ΔTr=|Tr2-Tr1|).

[0180] When the first change value ΔTr is greater than or equal to the first preset temperature T0, the controller 895 determines that the water temperature in the water tank 2 is too high and controls the heat pump to turn off, so that the first coil 81 stops heating the water in the water tank 2. When the first change value ΔTr is less than the first preset temperature T0, the controller 895 determines that the water temperature in the water tank 2 is low and controls the heat pump to turn on, so that the first coil 81 heats the water in the water tank 2.

[0181] It should be noted that since the calculation formula for the first preset temperature T0 (Formula (2)) is a binary function of the first heating time Δtr and the first height H1, the first preset temperature T0 can change with changes in the first heating time Δtr and the first height H1. In this way, when the controller 895 starts and stops the heat pump based on the first change value ΔTr and the first preset temperature T0, it can effectively eliminate the interference of the first heating time Δtr and the first height H1 on the first preset temperature T0, thereby improving the accuracy of calculating the first preset temperature T0.

[0182] When the hot water supply device 100 uses the electric heater 85 to heat water, the electric heater 85 heats the water from the third time t3 to the fourth time t4. The first temperature sensor 101 detects that the water temperature in the water tank 2 is a third water temperature Td1 at the third time t3 and a fourth water temperature Td2 at the fourth time t4.

[0183] Based on the third time t3 and the fourth time t4, the controller 895 calculates the second heating time Δtd (heating time Δt) of the electric heater 85. The second heating time Δtd is the absolute value of the difference between the fourth time t4 and the third time t3 (Δtd=|t4-t3|).

[0184] Then, the controller 895 calculates the second preset temperature Ts (preset temperature T) based on the second heating time Δtd, the first height H1, and the second height He. In this case, a=a2, b=b2, c=c2 in formula (1), and the second preset temperature Ts satisfies the following formula: Ts=a2×Δtd+b2×H1+c2×Hd+d; (3)

[0185] Then, the controller 895 calculates a second change value ΔTd based on the third water temperature Td1 and the fourth water temperature Td2. The second change value ΔTd is the absolute value of the difference between the fourth water temperature Td2 and the third water temperature Td1 (ΔTd=|Td2-Td1|).

[0186] When the second change value ΔTd is greater than or equal to the second preset temperature Ts, the controller 895 determines that the electric heater 85 is operating normally. When the second change value ΔTd is less than the second preset temperature Ts, the controller 895 determines that the electric heater 85 is malfunctioning.

[0187] It should be noted that since the calculation formula for the second preset temperature Ts (Formula (3)) is a three-variable function of the second heating time Δtd, the first height H1, and the preset distance Hd, the second preset temperature Ts can change with changes in the second heating time Δtd, the first height H1, and the preset distance Hd. In this way, when the controller 895 determines the operating state of the electric heater 85 based on the second change value ΔTd and the second preset temperature Ts, it can effectively eliminate the interference of the second heating time Δtd, the first height H1, and the preset distance Hd on the second preset temperature Ts, thereby improving the accuracy of calculating the second preset temperature Ts.

[0188] FIG. 31 is another structural diagram of a hot water supply device according to some embodiments.

[0189] As shown in Figure 31, the hot water supply device 100 also includes a relay 106, a first thermostat 104, a second thermostat 105, a second temperature sensor 102, a third temperature sensor 103, a wire 107, a connecting wire 108, and a temperature control switch 898. The relay 106, the first thermostat 104, the second thermostat 105, and the electric heater 85 are connected in series via the wire 107 to form a power circuit. The relay 106, the first thermostat 104, the second thermostat 105, and the temperature control switch 898 are configured to connect or disconnect the power circuit of the electric heater 85. The relay 106, the first thermostat 104, and the second thermostat 105 are disposed within the main unit 1. The first temperature sensor 101, the electric heater 85, the second temperature sensor 102, and the third temperature sensor 103 are each disposed within the water tank 2, with the second temperature sensor 102 and the third temperature sensor 103 disposed between the first temperature sensor 101 and the electric heater 85.

[0190] The second temperature sensor 102, the third temperature sensor 103, and the relay 106 are respectively coupled to the controller 895. The controller 895 is further configured to receive the water temperatures detected by the second temperature sensor 102 and the third temperature sensor 103, and control the relay 106 to connect or disconnect the power circuit of the electric heater 85 to control the electric heater 85 to turn on or off.

[0191] The second temperature sensor 102 and the first thermostat 104 are connected via a connecting line 108. The second temperature sensor 102 absorbs the heat of the water in the water tank 2, and the absorbed heat can be transferred to the first thermostat 104 via the connecting line 108. A first probe is provided in the first thermostat 104, and the first probe is filled with liquid. The liquid has the characteristic of thermal expansion and contraction. The thermal expansion and contraction characteristic may refer to the characteristic that the volume increases with increasing temperature and decreases with decreasing temperature. For example, after absorbing a certain amount of heat, the temperature of the first probe increases, and the liquid in the first probe expands, thereby increasing the volume of the first probe and disconnecting the power circuit of the electric heater 85. After releasing a certain amount of heat, the temperature of the first probe decreases, and the liquid in the first probe contracts, thereby decreasing the volume of the first probe and connecting the power circuit of the electric heater 85.

[0192] The third temperature sensor 103 and the second thermostat 105 are connected via a connecting line 108. After the third temperature sensor 103 absorbs heat from the water in the water tank 2, the absorbed heat can be transferred to the second thermostat 105 via the connecting line 108. A second probe is provided within the second thermostat 105. The second probe is filled with liquid. After absorbing a certain amount of heat, the temperature of the second probe rises, and the liquid within the second probe expands, thereby increasing the volume of the second probe. The power circuit of the electric heater 85 is disconnected. After releasing a certain amount of heat, the temperature of the second probe decreases, and the liquid within the second probe contracts, thereby reducing the volume of the second probe and connecting the power circuit of the electric heater 85.

[0193] In some embodiments, as shown in FIG29 , the height of the second temperature sensor 102 is a third height H2, and the height of the third temperature sensor 103 is a fourth height H3. The second temperature sensor 102 and the third temperature sensor 103 can be at the same height (H2=H3). Of course, in some embodiments, the second temperature sensor 102 and the third temperature sensor 103 can also be at different heights (H2≠H3).

[0194] In some embodiments, the distance between the second temperature sensor 102 and the first temperature sensor 101 is a first distance Hd2, and the distance between the third temperature sensor 103 and the first water temperature sensor 102 is a second distance Hd3. In other words, the difference between the third height H2 of the second temperature sensor 102 and the first height H1 of the first temperature sensor 101 is the first distance Hd2, and the difference between the fourth height H3 of the third temperature sensor 103 and the first height H1 of the first temperature sensor 101 is the second distance Hd3. When the second temperature sensor 102 and the third temperature sensor 103 are at the same height, the first distance Hd2 and the second distance Hd3 are the same.

[0195] In some embodiments, the first distance Hd2 and the second distance Hd3 are respectively smaller than the preset distance Hd.

[0196] In some embodiments, the hot water supply device 100 operates in a first mode and a second mode. In the first mode, the hot water supply device 100 heats the water in the water tank 2 using only the heat pump or the electric heater 85. In the second mode, the hot water supply device 100 heats the water in the water tank 2 using the first coil 81 and the electric heater 85. This second mode allows the water in the water tank 2 to be quickly heated to a high temperature.

[0197] FIG. 32 is yet another flow chart of a controller of a hot water supply device according to some embodiments.

[0198] In some embodiments, as shown in FIG. 32 , when the hot water supply device 100 operates in the first mode, the controller 895 is configured to perform steps 21 to 24 .

[0199] In step 21 , the controller 895 obtains the current water temperature Tp detected by the first temperature sensor 101 .

[0200] In step 22, based on the current water temperature Tp, the controller 895 determines whether the current water temperature Tp is greater than or equal to the first preset water temperature. If so, the controller 895 executes step 23; if not, the controller 895 executes step 24.

[0201] In step 23 , the controller 895 controls the heat pump or the electric heater 85 to turn off to stop heating the water in the water tank 2 .

[0202] In step 24 , the controller 895 controls the heat pump or the electric heater 85 to turn on to heat the water in the water tank 2 .

[0203] The first preset water temperature is the temperature of hot water required by the user, and the first preset water temperature can be set by the controller 895.

[0204] FIG. 33 is yet another flow chart of a controller of a hot water supply device according to some embodiments.

[0205] In some embodiments, as shown in FIG. 33 , when the hot water supply device 100 operates in the second mode, the controller 895 is configured to perform steps 31 to 34 .

[0206] In step 31 , the controller 895 obtains the current water temperature Tp detected by the first temperature sensor 101 .

[0207] In step 32, based on the current water temperature Tp, the controller 895 determines whether the current water temperature Tp is greater than or equal to the first limited water temperature. If so, the controller 895 executes step 33; if not, the controller 895 executes step 34.

[0208] In step 33 , the controller controls the relay 106 to disconnect the power circuit of the electric heater 85 and controls the heat pump to turn off.

[0209] In step 34 , the controller controls the relay 106 to connect the power circuit of the electric heater 85 .

[0210] After disconnecting the power circuit of the electric heater 85, the controller 895 issues a fault alarm and controls the heat pump and the electric heater 85 to stop heating. By disconnecting the power circuit of the electric heater 85 when the current water temperature Tp is greater than or equal to the first limit water temperature, the electric heater 85 is protected and safety accidents caused by a failure of the electric heater 85 are avoided.

[0211] It should be noted that the first limited water temperature can be set according to user needs and is less than or equal to the difference between the highest water temperature of the water tank 2 and a fifth threshold. The fifth threshold can be set according to the position of the first temperature sensor 101.

[0212] In some embodiments, when the controller 895 determines that the current water temperature Tp is greater than or equal to the first limited water temperature, and the controller 895 determines that the power circuit of the electric heater 85 is not disconnected, the first thermostat 104 is configured to disconnect the power circuit of the electric heater 85 when the second temperature sensor 102 detects that the first current water temperature Tp1 is greater than or equal to the first set temperature, and to connect the power circuit of the electric heater 85 when the second temperature sensor 102 detects that the first current water temperature Tp1 is less than the first set temperature; and / or, the second thermostat 105 is configured to disconnect the power circuit of the electric heater 85 when the third temperature sensor 103 detects that the second current water temperature Tp2 is greater than or equal to the first set temperature, and to connect the power circuit of the electric heater 85 when the third temperature sensor 103 detects that the second current water temperature Tp2 is less than the first set temperature.

[0213] It should be noted that the controller 895 receives the water temperatures detected by the second temperature sensor 102 and the third temperature sensor 103, and determines the relationship between the current water temperature Tp detected by the second temperature sensor 102 and the third temperature sensor 103 and the first set temperature. When the controller 895 determines that at least one of the first current water temperature Tp1 or the second current water temperature Tp2 is greater than or equal to the first set temperature, the controller 895 generates a fault alarm and controls the heat pump to shut down.

[0214] FIG. 34 is yet another flow chart of a controller of a hot water supply device according to some embodiments.

[0215] In some embodiments, as shown in Figure 34, when the controller 895 determines that the current water temperature Tp is greater than or equal to the first limited water temperature, the second temperature sensor 102 detects that the first current water temperature Tp1 is greater than or equal to the first set temperature, and the controller 895 determines that the power circuit of the electric heater 85 is not disconnected, the controller 895 is also configured to execute steps 41 to 44.

[0216] In step 41 , the controller 895 obtains the second current water temperature Tp2 detected by the third temperature sensor 103 .

[0217] In step 42, the controller 895 determines whether the second current water temperature Tp2 detected by the third temperature sensor 103 is greater than or equal to the second set temperature. If so, the controller 895 executes step 43; if not, the controller 895 executes step 44.

[0218] In step 43 , the controller 895 controls the temperature control switch 898 (such as a bimetallic strip) in the power circuit of the electric heater 85 to be disconnected, so as to cut off the power circuit of the electric heater 85 .

[0219] In step 44 , the controller 895 controls the electric heater 85 to operate normally.

[0220] If the third temperature sensor 103 detects that the second current water temperature Tp2 is greater than or equal to the second set temperature, the controller 895 controls the temperature control switch 898 in the power circuit of the electric heater 85 to disconnect, thereby cutting off the power circuit of the electric heater 85. This prevents the electric heater 85 from heating the gas in the water tank 2 when there is no liquid water in the water tank 2, which could cause excessive pressure in the water tank 2 and damage it. Furthermore, convection heat transfer between the heated gas and the third temperature sensor 103 could also increase the temperature of the third temperature sensor 103, thereby damaging the temperature sensor.

[0221] It should be noted that, as shown in FIG31 , the temperature control switch 898 is provided in the power circuit of the electric heater 85 to connect or disconnect the power circuit of the electric heater 85 .

[0222] After step 43, the controller 895 performs a fault alarm and notifies the personnel to perform maintenance. When the maintenance is completed, the personnel need to manually confirm that the maintenance is completed and turn on the power circuit of the electric heater 85 to restart the electric heater 85.

[0223] It should be noted that a current sensor or a voltage sensor may be provided in the power circuit of the electric heater 85, and the controller 895 may be coupled to the current sensor or the voltage sensor. In this way, the controller 895 can determine whether the power circuit of the electric heater 85 is disconnected based on the current or voltage signal detected by the current sensor or the voltage sensor.

[0224] In some embodiments, the hot water supply device 100 further includes a pressure sensor and a fourth temperature sensor 110 .

[0225] The pressure sensor is disposed at the top of the water tank 2 and is configured to measure the pressure P at the top of the water tank 2. When there is a lot of water vapor at the top of the cavity 211 of the inner tank 21, the pressure sensor can measure the pressure P of the water vapor.

[0226] The fourth temperature sensor 110 is disposed at one end (top) of the water tank 2 near the water tray 5, with at least a portion of the fourth temperature sensor 110 located at the top of the inner tank 21. The fourth temperature sensor 110 is configured to measure the temperature at the top of the cavity 211. When a high amount of water vapor is present at the top of the inner tank 21, the fourth temperature sensor 110 can measure the temperature of the water vapor. The fourth temperature sensor 110 is located at a sixth height H4.

[0227] FIG. 35 is yet another flow chart of a controller of a hot water supply device according to some embodiments.

[0228] In some embodiments, as shown in FIG. 35 , the controller 895 is further configured to execute steps 51 to 54 .

[0229] In step 51 , the controller 895 obtains the temperature detected by the fourth water temperature sensor 110 .

[0230] In step 52, the controller 895 determines whether the temperature detected by the fourth water temperature sensor 110 is greater than or equal to the third preset temperature, or whether the pressure value P detected by the pressure sensor is greater than or equal to the preset pressure. If so, the controller 895 executes step 52; if not, the controller 895 executes step 53.

[0231] In step 53 , the safety valve 86 is controlled to open to release the pressure of the water tank 2 .

[0232] In step 54 , the safety valve 86 is controlled to close.

[0233] After step 53, the controller 895 issues a fault alarm and controls the heat pump and the electric heater 85 to turn off to stop heating.

[0234] In some embodiments, the first distance Hd2 is greater than or equal to a first threshold, and the difference between the fifth height H5 and the sixth height H4 is less than or equal to a second threshold. The first threshold or the second threshold can be determined based on the specific structure of the water tank. Furthermore, the difference between the third preset temperature and the second preset temperature is greater than or equal to a third threshold, and the second preset temperature and the first preset temperature are both greater than or equal to a fourth threshold. The third and fourth thresholds can be set based on the corresponding sensor positions.

[0235] It should be noted that the first limited water temperature is lower than the first set temperature, the first set temperature is lower than the second set temperature, and the second set temperature is lower than the third preset temperature.

[0236] In addition, since the first temperature sensor 101, the second temperature sensor 102, the third temperature sensor 103, and the fourth temperature sensor 110 are located at different positions of the water tank 2, at the same time, the temperatures detected by the first temperature sensor 101, the second temperature sensor 102, the third temperature sensor 103, and the fourth temperature sensor 110 are different. For example, at the same time, the temperature detected by the fourth temperature sensor 110 is greater than the temperature detected by the third temperature sensor 103, the temperature detected by the third temperature sensor 103 is greater than the temperature detected by the second temperature sensor 102, and the temperature detected by the second temperature sensor 102 is greater than the temperature detected by the first temperature sensor 101.

[0237] Those skilled in the art will understand that the scope of the present invention is not limited to the above specific embodiments, and that certain elements of the embodiments may be modified and replaced without departing from the spirit of the present application. The scope of the present application is limited by the appended claims.

Claims

1. A hot water supply device, comprising: case; A water tank is disposed in the shell, the water tank comprising an inner liner, and a cavity is provided in the inner liner; a main body device, disposed in the housing and located on the upper side of the water tank, the main body device being connected to the water tank and configured to supply water and heat to the water tank; a pipeline, provided in the main device and the water tank, the main device and the water tank being connected through the pipeline; A water receiving tray is provided between the main device and the water tank. The main device and the water tank are connected to each other respectively. The pipeline is passed through the water receiving tray. The water receiving tray includes: base plate; and A first through hole is provided on the bottom plate; and A safety valve is provided in the first through hole, a portion of the safety valve is located on the side of the water receiving tray away from the water tank, and another portion extends into the cavity of the inner tank, and the other portion is located on the side of the cavity close to the water receiving tray. The safety valve is configured to relieve pressure in the water tank.

2. The hot water supply device according to claim 1, wherein: The pipeline includes: a heating coil connected to an external heating device, wherein the heating coil is configured to transfer heat to the water in the water tank to heat the water in the water tank; a water inlet pipe extending into the water tank and configured to deliver water from an external water source to the water tank; and The water outlet pipe extends into the water tank and is configured to discharge the water in the water tank.

3. The hot water supply device according to claim 2, wherein: The heating coil comprises: a first coil connected to the heat pump, wherein the first coil is configured to supply heat to the water in the water tank to heat the water in the water tank; and The second coil is connected to the solar heating device, and the second coil is configured to supply heat to the water in the water tank to heat the water in the water tank.

4. The hot water supply device according to claim 3, wherein: The portions of the first coil and the second coil extending into the inner container are close to the bottom of the inner container, and the portion of the first coil extending into the inner container is located on a side of the portion of the second coil extending into the inner container close to or away from the inner container.

5. The hot water supply device according to claim 3, wherein: The water receiving tray also includes a plurality of second through holes, which are arranged on the bottom plate. The inlet end and the outlet end of the first coil are respectively arranged in two second through holes, the inlet end and the outlet end of the second coil are respectively arranged in the other two second through holes, and the water outlet pipe and the water inlet pipe are respectively arranged in the remaining two second through holes.

6. The hot water supply device according to claim 5, wherein: The edge of the second through hole extends in a direction away from the water tank to form a flange for positioning the pipeline.

7. The hot water supply device according to claim 2, further comprising: The electric heater is arranged on the water tank, at least a portion of the electric heater extends into the water tank, and is configured to heat the water in the water tank.

8. The hot water supply device according to claim 7, further comprising: a first mounting hole, wherein the electric heater is arranged in the first mounting hole; Second mounting hole; a third mounting hole, wherein the first mounting hole, the second mounting hole, and the third mounting hole are sequentially arranged in a direction away from the main device and are communicated with the cavity of the liner; an anode rod, disposed in the third mounting hole, at least a portion of the anode rod extending into the cavity to prevent water from corroding the inner container; as well as The first temperature sensor is disposed in the second mounting hole, at least a portion of the first temperature sensor extends into the cavity, and is configured to detect the water temperature in the water tank.

9. The hot water supply device according to claim 2, wherein: The surface of the bottom plate close to the main device is inclined to accommodate condensed water on the pipeline and the main device, and the water receiving tray further includes: a baffle, disposed on a side of the bottom plate close to the main device and surrounding the bottom plate, the baffle extending in a direction close to the main device; and The drainage hole is arranged at the lowest position of the bottom plate close to the surface of the main device.

10. The hot water supply device according to claim 9, wherein: The water receiving tray further comprises a groove, which is arranged on a side of the baffle close to the water tank. A portion of the water tank close to the water receiving tray protrudes to form a protrusion, which is plugged into the groove.

11. The hot water supply device according to claim 9, wherein: The water receiving tray further comprises a plurality of positioning posts, which are symmetrically arranged on a side of the baffle close to the main body device to position the main body device.

12. The hot water supply device according to claim 9, wherein: The shell is provided with a fourth mounting hole, and the hot water supply equipment further includes a drain pipe, which is passed through the fourth mounting hole to be connected with the drain hole.

13. The hot water supply device according to claim 12, wherein: The safety valve includes a pressure relief port, which is located on a side of the water receiving tray close to the main device, so that when the safety valve relieves pressure on the water tank, the water in the water tank flows from the pressure relief port into the bottom plate and is discharged to the outside of the water tank through the drainage hole and the drainage pipe.

14. The hot water supply device according to claim 2, wherein: The water receiving tray further comprises a reinforcing rib, which is arranged on a surface of the bottom plate away from the main device and extends in a direction away from the main device, and the reinforcing rib is plugged into the water tank.

15. The hot water supply device according to claim 2, further comprising: The blocking piece is arranged at the water outlet end of the water inlet pipe, and a plurality of water outlet holes are provided on the side surface of the blocking piece so that the water flowing into the blocking piece from the water inlet pipe flows into the inner tank from the plurality of water outlet holes.

16. The hot water supply device according to claim 1, wherein The main device includes: A first frame connected to the water receiving tray; and The electrical appliance box is disposed in the first frame and is pivotally connected to the first frame.

17. The hot water supply device according to claim 1, wherein: The liner comprises: First head; Second header; and The body is arranged between the first head and the second head, and is connected to the first head and the second head respectively.

18. The hot water supply device according to claim 1, wherein: The water tank further comprises a wrapping layer, which is sleeved on the outside of the inner tank. The wrapping layer is an integral piece and fits tightly with the inner tank.

19. The hot water supply device according to claim 18, wherein: The water receiving tray is arranged on a side of the wrapping layer close to the main device to reduce heat loss of the wrapping layer.

20. The hot water supply device according to claim 1, wherein The orthographic projection of the base plate on the horizontal plane is greater than or equal to the orthographic projection of the main device on the horizontal plane.

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