Water tank

Abstract

The utility model relates to a water tank which comprises a tank body, a first connecting pipe, a second connecting pipe, a water inlet pipe and a water outlet pipe, and one end of the first connecting pipe, one end of the second connecting pipe, one end of the water inlet pipe and one end of the water outlet pipe are all located in the tank body; the height position of one end of the first connecting pipe in the box body is higher than the height positions of one end of the water inlet pipe and one end of the second connecting pipe in the box body; the horizontal position of one end of the first connecting pipe in the box body is far away from one end of the water inlet pipe and the horizontal position of one end of the second connecting pipe in the box body. Heat exchange between cold water and hot water in the water tank can be reduced, and the heat exchange efficiency in the domestic hot water heat exchanger is improved.

Description

Technical Field

[0001] The utility model relates to the field of heat pump circulation, in particular to a water tank. Background Art

[0002] Existing HVAC equipment usually has a separate large-volume split water tank. The design of the split water tank makes the entire HVAC equipment occupy a large space, which cannot meet the current market customers' demand for miniaturization. In addition, there is heat exchange between cold and hot water in the existing water tank, resulting in low water heat exchange efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an improved water tank.

[0004] The utility model adopts the following technical solutions:

[0005] Construct a water tank, comprising a tank body, a first connecting pipe, a second connecting pipe, a water inlet pipe and a water outlet pipe, wherein one end of the first connecting pipe, one end of the second connecting pipe, one end of the water inlet pipe and one end of the water outlet pipe are all located in the tank body;

[0006] The height position of one end of the first connecting pipe in the box is higher than the height position of one end of the water inlet pipe and the height position of one end of the second connecting pipe in the box;

[0007] One end of the first connecting pipe is at a horizontal position in the box body away from one end of the water inlet pipe and one end of the second connecting pipe is at a horizontal position in the box body.

[0008] In some embodiments, one end of the water outlet pipe is at a horizontal position in the box body away from one end of the water inlet pipe and one end of the second connecting pipe is at a horizontal position in the box body.

[0009] In some embodiments, a horizontal position of one end of the water outlet pipe in the box is far away from a horizontal position of one end of the first connecting pipe in the box.

[0010] In some embodiments, the water tank is arranged in a longitudinal direction, one end of the water inlet pipe and one end of the second connecting pipe are located at one end of the tank body, one end of the water outlet pipe is located at the other end of the tank body, and one end of the first connecting pipe is located in the axial position of the tank body between one end of the water outlet pipe and one end of the water inlet pipe and one end of the second connecting pipe.

[0011] In some embodiments, the height position of one end of the water outlet pipe in the box is higher than the height position of one end of the water inlet pipe and the height position of one end of the second connecting pipe in the box.

[0012] In some embodiments, one end of the first connecting pipe is located at a height position within the box body between one end of the water outlet pipe and one end of the water inlet pipe and one end of the second connecting pipe.

[0013] In some embodiments, one end of the water inlet pipe and one end of the second connecting pipe correspond to each other in horizontal positions within the box;

[0014] And / or, one end of the water inlet pipe and one end of the second connecting pipe are at corresponding height positions within the box.

[0015] In some embodiments, the box body is formed with a circulating water outlet, a circulating water inlet, a water inlet and a water outlet for respectively passing through the second connecting pipe, the first connecting pipe, the water inlet pipe and the water outlet pipe, and the circulating water outlet, the circulating water inlet, the water inlet and the water outlet are all formed at one end of the box body.

[0016] In some embodiments, at least part of the water outlet pipe is a nano straight heating pipe;

[0017] And / or, the water tank further comprises a heat preservation cover arranged outside the box body, and the heat preservation cover is sleeved outside the box body;

[0018] And / or, a plurality of through holes penetrating along the thickness direction of the pipe wall are formed on one end of the second connecting pipe and / or one end of the first connecting pipe and / or one end of the water inlet pipe and / or one end of the water outlet pipe;

[0019] And / or, the water tank further includes a drain valve, a drain outlet is provided at the lower end of the tank body, and the drain valve is provided on the drain outlet.

[0020] In some embodiments, one end of the water outlet pipe and one end of the water inlet pipe are both located on one side of the cross-section where their axes are located in the box, and one end of the first connecting pipe and one end of the second connecting pipe are both located on the other side of the cross-section in the box.

[0021] The utility model has the following advantages:

[0022] The utility model can effectively utilize the principle that the higher the water temperature, the smaller the density, by setting the height position of the port of the first connecting pipe to be higher than the ports of the water inlet pipe and the second connecting pipe, and avoid the intersection of hot water and cold water in the vertical direction, so that the hot water that enters the water tank through the first connecting pipe after being heated can be directly above the ports of the water inlet pipe for inputting and outputting cold water and the second connecting pipe, thereby reducing the heat exchange between the hot and cold water in the water tank;

[0023] By setting the horizontal position of the first connecting pipe port to be far away from the ports of the water inlet pipe and the second connecting pipe, the intersection of hot water and cold water can be avoided in the horizontal direction, further reducing the heat exchange between the hot and cold water in the water tank.

[0024] By avoiding the crossover of cold and hot water in both the vertical and horizontal directions, the water flowing out of the heat exchanger can be prevented from re-entering the heat exchanger through the pipeline to a greater extent, thereby ensuring that the temperature of the water entering the heat exchanger for heat exchange is low, thereby maximizing the heat exchange efficiency in the domestic hot water heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0026] Figure 1 It is a structural schematic diagram of a water tank in the first embodiment of the utility model;

[0027] Figure 2 yes Figure 1 The schematic diagram of the AA section structure of the water tank shown;

[0028] Figure 3 yes Figure 1 Right side view of the water tank shown;

[0029] Figure 4 yes Figure 1 The schematic diagram of the internal structure distribution of the water tank shown;

[0030] Figure 5 Is has Figure 1 A schematic diagram of the structure of a heat pump system device for a water tank shown;

[0031] Figure 6 yes Figure 1 Schematic diagram of the location of the water tank in the heat pump system equipment. DETAILED DESCRIPTION

[0032] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "bottom", "inside", "inside", "outside", etc. are based on the directions or positional relationships shown in some of the drawings, and are constructed and operated in a specific direction. They are only for the convenience of describing the present technical solution, and do not indicate that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0033] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0034] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.

[0035] First embodiment:

[0036] Figures 1 to 4 The water tank 1 in the first embodiment of the utility model is shown, which is used with the heat pump system equipment 2 (with Figure 5 to Figure 6The heat exchanger of the refrigerant circulation module in the heat pump system device 2 shown in the figure is connected to form a domestic hot water loop to heat the water inside for use by users. The water tank 1 includes a box body 10, a first connecting pipe 20, a second connecting pipe 30, a water inlet pipe 40 and a water outlet pipe 50. The first connecting pipe 20, the second connecting pipe 30, the water inlet pipe 40 and the water outlet pipe 50 are all penetrated on the box body 10, and one end of each is located in the box body 10. The other end of the first connecting pipe 20 and the other end of the second connecting pipe 30 are respectively connected to the water outlet and the water inlet of the heat exchanger of the refrigerant circulation module, thereby forming a water circulation loop, the first connecting pipe 20 inputs the domestic water that has been heated by the heat exchanger into the box body 10, and the second connecting pipe 30 outputs the domestic water to be heated from the box body 10 to the heat exchanger, thereby realizing the heating of domestic water. The other end of the water inlet pipe 40 and the other end of the water outlet pipe 50 extend to the outside of the frame 201 of the heat pump system device 2, respectively. The other end of the water inlet pipe 40 is used to communicate with the water outlet device to input the domestic water to be heated into the box 10. The other end of the water outlet pipe 50 is used to communicate with the water-using device to output the heated domestic water for use by the user.

[0037] like Figure 2 and Figure 4 As shown, the height position of one end of the first connecting pipe 20 in the box body 10 is higher than the height positions of one end of the water inlet pipe 40 and one end of the second connecting pipe 30 in the box body 10. The horizontal position of one end of the first connecting pipe 20 in the box body 10 is far away from the horizontal position of one end of the water inlet pipe 40 and one end of the second connecting pipe 30 in the box body 10.

[0038] The first connecting pipe 20, the water inlet pipe 40 and the second connecting pipe 30 are arranged in the housing 10, and the principle that the higher the water temperature, the lower the density can be effectively utilized, so that the circulating water output by the first connecting pipe 20 can be directly output to the upper part of the water inlet pipe 40 and the second connecting pipe 30, so as to avoid the hot and cold water heat exchange with the domestic water to be heated around the water inlet pipe 40 and the second connecting pipe 30, and also avoid the heated domestic water input from the first connecting pipe 20 into the housing 10 to be repeatedly heated through the second connecting pipe 30. At the same time, one end of the first connecting pipe 20 is far away from the water inlet pipe 40 and the second connecting pipe 30 in a horizontal position, and further separates the heated domestic water from the domestic water to be heated. According to the distribution of the ports of the pipelines in the housing 10, the temperatures of the domestic water flowing in different pipelines are different, so as to avoid the cross convection between the two, form the hot and cold water heat exchange, and avoid the hot water output from the heat exchanger to return to the heat exchanger. The cold water that has not been heat exchanged is always heat exchanged with the hot water in the housing 10, thereby improving the heat exchange efficiency.

[0039] It should be understood that the "height position" refers to the height of each component with the bottom plate of the rack 201 as a reference when the water tank 1 is horizontally arranged in the rack 201. The "horizontal position" refers to the position of each component on the plane without considering the height factor (that is, all height positions are regarded as the same height position).

[0040] like Figure 1 and Figure 2 As shown, in this embodiment, the water tank 1 is arranged in a longitudinal direction, the middle part of which is arranged in a cylindrical shape, and both ends are hemispherical, and the three parts are connected to form a columnar structure with protruding ends. Then the "horizontal position" is the position with axis Q as the coordinate axis reference, and the "height position" is the position with axis P as the coordinate axis reference.

[0041] In some other optional embodiments, the "horizontal position" can also be understood as the axial position of the water tank 1. The "height position" can also be understood as the radial position of the water tank 1. In this case, without considering how the water tank 1 is placed in the rack 201, as long as the ports of each pipeline are spaced along a certain radial direction of the water tank 1, and when installed in the rack 201 of the heat pump system device 2, the side wall of the box body 10 close to the side of the water inlet pipe 40 and the second connecting pipe 30 away from the first connecting pipe 20 is set as the lower end, and the side wall of the box body 10 close to the first connecting pipe 20 is set as the upper end, the same effect can be achieved.

[0042] In some other optional embodiments, the water tank 1 may also be in other columnar structures, or in other structures such as a hemisphere, a cube, an irregular body, etc.

[0043] For example Figure 2 As shown, the box body 10 is formed with a circulating water outlet 12, a circulating water inlet 11, a water inlet 13 and a water outlet 14 for connecting the internal space of the box body 10 with the outside. The heat exchanger is formed with a cold water inlet, a hot water outlet, a first refrigerant port and a second refrigerant port.

[0044] Among them, one end of the second connecting pipe 30 extends to the inside of the box body 10 through the circulating water outlet 12, and the other end is connected to the cold water inlet. One end of the first connecting pipe 20 extends to the inside of the box body 10 through the circulating water inlet 11, and the other end is connected to the hot water outlet. One end of the water inlet pipe 40 extends to the inside of the box body 10 through the water inlet 13, and the other end extends to the outside of the rack 201 through the wall of the frame 2011. One end of the water outlet pipe 50 extends to the inside of the box body 10 through the water outlet 14, and the other end also extends to the outside of the rack 201 through the wall of the frame 2011.

[0045] In some embodiments, the circulating water outlet 12, the circulating water inlet 11, the water inlet 13 and the water outlet 14 are all formed at one end of the housing 10 to ensure that one end of the second connecting pipe 30, the first connecting pipe 20, the water inlet pipe 40 and the water outlet pipe 50 are all extended from one end of the housing 10 to the other end, so as to ensure that the hot water output from the first connecting pipe 20 is sprayed from the pipe into the housing 10 and approaches one end of the water outlet pipe 50 under the action of inertia. At the same time, it is also convenient for the installation and maintenance of the pipeline, so as to facilitate the connection with the refrigerant circulation module, and the connection of the water delivery equipment and the water-using equipment pipeline, and at the same time avoid the first connecting pipe 20, the second connecting pipe 30, the water inlet pipe 40 and the water outlet pipe 50 extending and arranging in the rack 201, reducing the utilization rate of the internal space of the rack 201, and realizing the miniaturization of the water tank 1.

[0046] In some other optional embodiments, the circulating water outlet 12 and / or the circulating water inlet 11 and / or the water inlet 13 and / or the water outlet 14 may also be formed on the side wall of the box body 10 .

[0047] Read also Figure 3 In this embodiment, the water inlet 13 and the water outlet 14 are located on the same side of the vertical section where the axis P of the box body 10 is located, the circulating water outlet 12 and the circulating water inlet 11 are located on the horizontal section where the axis Q of the box body 10 is located, and the line between the circulating water outlet 12 and the circulating water inlet 11 is perpendicular to the line between the water inlet 13 and the water outlet 14.

[0048] In some embodiments, the height position of one end of the water outlet pipe 50 in the box body 10 is higher than the height position of one end of the water inlet pipe 40 and one end of the second connecting pipe 30 in the box body 10, so as to ensure that the temperature of the hot water flowing out of the water outlet pipe 50 is higher, and the cold water to be heated flowing into the box body 10 from the water inlet pipe 40 exchanges heat with the hot water as little as possible, and at the same time avoid the heated hot water being output from the second connecting pipe 30 for heating again, thereby reducing the heat exchange efficiency.

[0049] For example Figure 4 As shown, in this embodiment, the height position of one end of the first connecting pipe 20 in the box 10 is between one end of the water outlet pipe 50 and one end of the water inlet pipe 40 and one end of the second connecting pipe 30. That is, one end of the water outlet pipe 50 is at the highest position in the box 10, one end of the first connecting pipe 20 is second, and one end of the water inlet pipe 40 and one end of the second connecting pipe 30 are at the lowest. Thus, while avoiding heat exchange and repeated heating of cold and hot water, it can be ensured that the water output to the user for use is the hottest water located at the top of the box 10.

[0050] Specifically, one end of the first connecting pipe 20 is approximately located at the midpoint of a line connecting one end of the water outlet pipe 50 , one end of the water inlet pipe 40 , and one end of the second connecting pipe 30 .

[0051] In some other optional embodiments, the water outlet pipe 50 and one end of the first connecting pipe 20 may also be at similar heights in the box body 10, such as being at the same height, or one of them being slightly higher / lower than the other.

[0052] In some embodiments, one end of the water outlet pipe 50 is in a horizontal position inside the box 10 away from one end of the water inlet pipe 40 and one end of the second connecting pipe 30 is in a horizontal position inside the box 10, so as to avoid the cold water input from the water inlet pipe 40 being directly output from the water outlet pipe 50 to the user for use, or to avoid the domestic water to be heated around the second connecting pipe 30 being not yet heated and being directly output from the water outlet pipe 50 to the user for use.

[0053] In some embodiments, the horizontal position of one end of the water outlet pipe 50 in the box body 10 is far away from the horizontal position of one end of the first connecting pipe 20 in the box body 10 .

[0054] In this embodiment, one end of the water inlet pipe 40 and one end of the second connecting pipe 30 are located at one end of the housing 10, one end of the water outlet pipe 50 is located at the other end of the housing 10, and one end of the first connecting pipe 20 is located between one end of the water outlet pipe 50 and one end of the water inlet pipe 40 and one end of the second connecting pipe 30 in the axial position of the housing 10 (the position with the axis Q as the coordinate axis reference). Thus, the water outlet pipe 50 for outputting hot water to the user is spaced farthest from one end of the water inlet pipe 40 and one end of the second connecting pipe 30 with cold water distributed around, and the end of the first connecting pipe 20 outputting hot water into the housing 10 is next, thereby further avoiding the heat exchange of hot and cold water in the housing 10 and improving the heat exchange efficiency.

[0055] Furthermore, one end of the first connecting pipe 20 is approximately located at the midpoint of a line connecting one end of the water outlet pipe 50 , one end of the water inlet pipe 40 , and one end of the second connecting pipe 30 .

[0056] In some other optional embodiments, the horizontal position of one end of the water outlet pipe 50 in the box body 10 can also be close to the horizontal position of one end of the water inlet pipe 40 and / or one end of the second connecting pipe 30 in the box body 10. The horizontal position of one end of the water outlet pipe 50 in the box body 10 can also be close to the horizontal position of one end of the first connecting pipe 20 in the box body 10. Or the horizontal position of one end of the water outlet pipe 50 in the box body 10 is located between the first connecting pipe 20 and one end of the water inlet pipe 40 and one end of the second connecting pipe 30.

[0057] Furthermore, one end of the box body 10 where one end of the water inlet pipe 40 and one end of the second connecting pipe 30 are located is one end of the box body 10 where the circulating water outlet 12, the circulating water inlet 11, the water inlet 13 and the water outlet 14 are located, so that the water output by the first connecting pipe 20 can flow to the horizontal position where the water outlet pipe 50 is located.

[0058] In some other optional embodiments, the circulating water outlet 12 , the circulating water inlet 11 , the water inlet 13 and the water outlet 14 may also be located on one end of the box 10 close to one end of the water outlet pipe 50 .

[0059] In some embodiments, one end of the water inlet pipe 40 and one end of the second connecting pipe 30 correspond to each other in horizontal positions in the housing 10. And / or, one end of the water inlet pipe 40 and one end of the second connecting pipe 30 correspond to each other in height positions in the housing 10. This allows the cold water entering the housing 10 from the water inlet pipe 40 to avoid heat exchange with the hot water as much as possible, and directly enter the second connecting pipe 20 which is closest to it, and enter the heat exchanger from the housing 10 through the second connecting pipe 20 for heat exchange and heating, thereby further improving the heat exchange efficiency in the heat exchanger.

[0060] It should be understood that "corresponding" here means that the positions of the two are roughly the same (such as one end of the water inlet pipe 40 is slightly higher or lower than one end of the second connecting pipe 30, or the horizontal position of one end of the water inlet pipe 40 is slightly different from that of one end of the second connecting pipe 30), or are exactly the same.

[0061] In this embodiment, one end of the water inlet pipe 40 is slightly lower in height inside the box body 10 than one end of the second connecting pipe 30, and its position with the axis Q as the coordinate axis reference is slightly different from one end of the second connecting pipe 30 (one end of the water inlet pipe 40 is closer to the end of the box body 10 where the circulating water outlet 12, the circulating water inlet 11, the water inlet 13 and the water outlet 14 are located).

[0062] For example Figure 2 As shown, in some embodiments, one end of the water outlet pipe 50 and one end of the water inlet pipe 40 are located on one side of the cross-section where their axes are located in the box body 10, and one end of the first connecting pipe 20 and one end of the second connecting pipe 30 are located on the other side of the cross-section in the box body 10.

[0063] It should be understood that when the water tank 1 is placed in the heat pump system device 2, the "cross section" used as the interface should be the cross section passing through the axis of the water tank 1 and perpendicular to the horizontal plane (such as the ground).

[0064] In this embodiment, the cross section where the axis P is located is used as the dividing interface to divide the box body 10 into two sides, and both sides are arranged close to the inner wall of the box body 10 to increase the interval between them as much as possible.

[0065] In some embodiments, at least part of the outlet pipe 50 is a nano straight heating pipe, which is used to perform secondary heating on the domestic water in the outlet pipe 50. Alternatively, a PTC heater is provided on one side of the water tank to perform auxiliary heating on the water in the water tank.

[0066] In some embodiments, the second connecting pipe 30 and / or the first connecting pipe 20 and / or the water inlet pipe 40 and / or the water outlet pipe 50 are formed with a plurality of through holes along the thickness direction of the pipe wall at one end inside the box body 10 so as to output water from multiple directions inside the box body 10 or input water into multiple directions inside the box body 10.

[0067] like Figure 1 As shown, in some embodiments, the water tank 1 further includes a drain valve 60. A drain port is provided on the lower side of the tank body 10. The drain valve 60 is provided on the drain port for discharging domestic water in the water tank 1 to facilitate maintenance and the like.

[0068] It should be understood that the arrangement of the two support members 2014 can provide a space for the drain valve 60 to be installed, thereby preventing the protruding drain valve 60 from being squeezed or damaged during placement and transportation.

[0069] like Figure 2 As shown, in some embodiments, the water tank 1 further includes a heat preservation cover 70 , which is disposed outside the box body 10 for heat preservation and reducing heat loss of domestic water in the box body 10 .

[0070] like Figure 5 and Figure 6 As shown, in some embodiments, the heat pump system device 2 in which the water tank 1 is located includes a frame 201, a refrigerant circulation module and a water circulation module, and the water tank 1 is a part of the water circulation module. The frame 201 defines a receiving chamber 2013, and the water tank 1 is arranged at the lower end of the receiving chamber 2013 in a state where the axis is horizontal, and is supported by the bottom wall of the frame 201. The refrigerant circulation module and the water circulation module are both arranged in the receiving chamber 2013, and the refrigerant circulation module forms a refrigerant loop for heat exchange with the water circulation module and the terminal device, so as to realize cooling or heating of the terminal device and heating of domestic water. The water circulation module forms a water circulation loop for heat exchange with the refrigerant loop and heating domestic water.

[0071] In some embodiments, the frame 201 further includes at least two stoppers 2015, which are disposed on the lower wall of the frame 2011. The drain valve 60 is located between the at least two stoppers 2015 to further protect the drain valve 60 from being squeezed or damaged during transportation. In this embodiment, there are two stoppers 2015, which are disposed on the front and rear sides of the drain valve 60, respectively.

[0072] In some embodiments, the water circulation module further includes a water pump, which is disposed between the circulating water outlet 12 and the cold water inlet, and is used to provide power for the output of water in the water tank.

[0073] In some embodiments, the refrigerant circulation module further includes a compressor, and the heat exchanger and the compressor are connected through a pipeline to form a refrigerant circuit. The frame 201 includes a frame 2011, a partition 2012 and at least one support member 2014, the at least one support member 2014 is arranged below the frame 2011, and is used to support the entire water tank, and the accommodating chamber 2013 is formed in the frame 2011. The partition 2012 is arranged in the frame 2011, and the accommodating chamber 2013 is divided into at least two chambers, so as to facilitate the integrated block arrangement of the water circulation module, reasonably utilize the space in the accommodating chamber 2013, and reduce the volume of the water tank 1. The water tank 1 is arranged in one of the two chambers, and the heat exchanger and the compressor are arranged in the other of the two chambers.

[0074] In this embodiment, there are two support members 2014, which are symmetrically arranged below the frame 2011. The partition 2012 is horizontally placed in the frame 2011, dividing the accommodating chamber 2013 into a first chamber located at the top and a second chamber located at the bottom. The water tank 1 is arranged in the second chamber, and the heat exchanger and the compressor are arranged in the first chamber. The center of gravity of the water tank 1 can be lowered, and the stability of the equipment can be improved.

[0075] In some embodiments, the heat exchanger may be a double-tube heat exchanger.

[0076] In some embodiments, the volume of the water tank 1 is adapted to the volume of the second chamber to maximize the capacity of the water tank 1 and reduce the space occupied by the second chamber.

[0077] In some embodiments, the capacity of the water tank 1 is 78L.

[0078] Second embodiment:

[0079] The utility model also constructs another embodiment of the water tank 1 (not shown in the figure), and the main difference between this embodiment and the first embodiment is that:

[0080] In this embodiment, the partition 2012 is vertically arranged in the frame 2011 to divide the accommodating chamber 2013 into two adjacent chambers on the left and right or front and back. The water tank is vertically arranged in one of the chambers, and the heat exchanger and the compressor are arranged in the other chamber.

[0081] In this embodiment, one end of the circulating water outlet pipe and one end of the water inlet pipe are located on one side of the box body, and one end of the water outlet pipe is located on the other side of the box body to minimize the heat exchange between cold water and hot water. Specifically, the water outlet pipe of the water tank is arranged as close to the upper wall of the water tank as possible, and due to the principle that hot water is heavy and cold water is light, the water inlet pipe is located as close to the lower wall of the water tank as possible, so that the cold water entering the water inlet pipe and the hot water discharged from the hot water pipe are isolated as much as possible, thereby ensuring the maximum hot water discharge.

[0082] In some embodiments, one end of the circulating water inlet pipe may be located together with the outlet pipe on one side of the tank, or between one end of the outlet pipe and one end of the circulating water outlet pipe. The end of the circulating water inlet pipe located inside the water tank is located above the end of the circulating water outlet pipe located inside the water tank, so that the hot water and cold water in the water tank are separated as much as possible, so that the amount of hot water discharged is maximized.

[0083] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A water tank, characterized in that: It comprises a box body (10), a first connecting pipe (20), a second connecting pipe (30), a water inlet pipe (40) and a water outlet pipe (50), wherein one end of the first connecting pipe (20), one end of the second connecting pipe (30), one end of the water inlet pipe (40) and one end of the water outlet pipe (50) are all located inside the box body (10); The height position of one end of the first connecting pipe (20) in the box (10) is higher than the height positions of one end of the water inlet pipe (40) and one end of the second connecting pipe (30) in the box (10); One end of the first connecting pipe (20) is at a horizontal position in the box (10) away from one end of the water inlet pipe (40), and one end of the second connecting pipe (30) is at a horizontal position in the box (10).

2. The water tank according to claim 1, characterized in that: One end of the water outlet pipe (50) is at a horizontal position in the box (10) away from one end of the water inlet pipe (40) and one end of the second connecting pipe (30) is at a horizontal position in the box (10).

3. The water tank according to claim 2, characterized in that: One end of the water outlet pipe (50) is at a horizontal position in the box (10) away from the horizontal position of one end of the first connecting pipe (20) in the box (10).

4. The water tank according to claim 3, characterized in that The water tank (1) is arranged in a longitudinal direction, one end of the water inlet pipe (40) and one end of the second connecting pipe (30) are located at one end of the tank body (10), one end of the water outlet pipe (50) is located at the other end of the tank body (10), and one end of the first connecting pipe (20) is located between one end of the water outlet pipe (50) and one end of the water inlet pipe (40) and one end of the second connecting pipe (30) in the axial position of the tank body (10).

5. The water tank according to claim 1, characterized in that: The height position of one end of the water outlet pipe (50) in the box (10) is higher than the height positions of one end of the water inlet pipe (40) and one end of the second connecting pipe (30) in the box (10).

6. The water tank according to claim 5, characterized in that One end of the first connecting pipe (20) is located at a height position inside the box (10) between one end of the water outlet pipe (50) and one end of the water inlet pipe (40) and one end of the second connecting pipe (30).

7. The water tank according to claim 1, characterized in that One end of the water inlet pipe (40) and one end of the second connecting pipe (30) are at corresponding horizontal positions inside the box (10); And / or, one end of the water inlet pipe (40) and one end of the second connecting pipe (30) are at corresponding height positions inside the box (10).

8. The water tank according to claim 1, characterized in that The housing (10) is provided with a circulating water outlet (12), a circulating water inlet (11), a water inlet (13) and a water outlet (14) for respectively passing the second connecting pipe (30), the first connecting pipe (20), the water inlet pipe (40) and the water outlet pipe (50); the circulating water outlet (12), the circulating water inlet (11), the water inlet (13) and the water outlet (14) are all formed at one end of the housing (10).

9. The water tank according to claim 1, characterized in that: At least part of the pipe section of the water outlet pipe (50) is a nano straight heating pipe; And / or, the water tank (1) further comprises a heat-insulating cover (70) which is arranged outside the box body (10), and the heat-insulating cover (70) is sleeved outside the box body (10); and / or, a plurality of through holes penetrating in the direction of the thickness of the pipe wall are formed on one end of the second connecting pipe (30) and / or one end of the first connecting pipe (20) and / or one end of the water inlet pipe (40) and / or one end of the water outlet pipe (50); And / or, the water tank (1) further comprises a drain valve (60), a drain outlet is provided at the lower end of the box body (10), and the drain valve (60) is arranged on the drain outlet.

10. The water tank according to claim 1, characterized in that One end of the water outlet pipe (50) and one end of the water inlet pipe (40) are both located on one side of the cross section where the axis thereof is located in the box body (10), and one end of the first connecting pipe (20) and one end of the second connecting pipe (30) are both located on the other side of the cross section in the box body (10).

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