Heat pump system and water tank

Abstract

The utility model relates to a heat pump system and a water tank, the water tank comprises: a water tank body having an axial direction, the water tank body having a first end and a second end in the axial direction; the first end is lower than the second end; the at least two temperature detection elements are arranged on the outer side wall of the water tank body in a patch mode and are arranged at intervals in the axial direction of the water tank body; and the heating structure is mounted into the water tank body from the first end. According to the water tank, the at least two temperature detection elements are arranged on the outer side wall of the water tank body in the patch mode and are arranged at intervals in the axial direction of the water tank body, so that punching installation on the outer side wall of the water tank body can be avoided, and the number of holes in the water tank body is reduced; in addition, the heating structure is installed in the water tank body from the first end, water which is located at a low position and is low in temperature can be heated, and therefore the temperature of hot water output by the water tank body can be guaranteed.

Description

Technical Field

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

[0002] The heat pump system in the related technology usually uses the recovered heat as a heat source for heating or other heating equipment. The current trigeneration system can generally recover the heat generated during the refrigeration process to heat domestic water, but multiple temperature sensors are required in the water tank, and holes need to be drilled in the water tank. Due to the large number of holes, water leakage and other problems are prone to occur during use. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an improved water tank, and further provide an improved heat pump system.

[0004] The technical solution adopted by the utility model to solve the technical problem is: construct a water tank, including:

[0005] The water tank body has an axial direction, and the water tank body has a first end and a second end in the axial direction; the first end is arranged lower than the second end;

[0006] At least two temperature detection elements are arranged on the outer side wall of the water tank body by patch mode and are arranged at intervals along the axial direction of the water tank body;

[0007] A heating structure is installed in the water tank body from the first end.

[0008] In some embodiments, there are four temperature detection elements, and the four temperature detection elements are spaced apart between the first end and the second end.

[0009] In some embodiments, the water tank also includes a first temperature control switch arranged on the side wall of the water tank body; the first temperature control switch is used to be in an open state when the temperature in the water tank body reaches a first set temperature so that the heating structure is in a power-off state; the first temperature control switch is also used to be in an open state when the temperature in the water tank body is lower than the first set temperature so that the heating structure is in a power-on state.

[0010] In some embodiments, the water tank further comprises a second temperature control switch disposed on the water tank body, and the second temperature control switch is disposed at the first end;

[0011] The second temperature control switch is used to be in an off state when the temperature in the water tank body reaches a second set temperature to put the heating structure in a power-off state; the second set temperature is greater than the first set temperature.

[0012] In some embodiments, the water tank further comprises a blind pipe penetrating from the first end into the water tank body, the blind pipe is provided with a temperature sensing probe, and the temperature sensing probe is provided close to the heating structure;

[0013] The second temperature control switch is connected to the temperature sensing probe.

[0014] In some embodiments, a first inlet and outlet for hot water input is provided on the side wall of the water tank body, and a first set distance is provided between the first inlet and outlet and the first end, and the first set distance is greater than or equal to one third of the distance between the first end and the second end, and less than or equal to two thirds of the distance between the first end and the second end;

[0015] And / or, the water tank body is provided with a second inlet and outlet for hot water output, and the second inlet and outlet is provided at the second end;

[0016] And / or, a water replenishment port is provided on the side wall of the water tank body, and a second set distance is provided between the water replenishment port and the first end, and the second set distance is greater than zero and less than one third of the distance between the first end and the second end;

[0017] And / or, the water tank body is provided with a water return port at the first end.

[0018] In some embodiments, the water tank body is a duplex steel inner tank.

[0019] In some embodiments, the water tank further comprises a corrosion-resistant metal rod; the metal rod penetrates into the water tank body from the second end.

[0020] In some embodiments, the water tank further comprises a heat preservation structure disposed on the periphery of the water tank body;

[0021] The heat-insulating structure is provided with through holes, and the through holes are arranged in one-to-one correspondence with the temperature detection elements.

[0022] A heat pump system is also constructed, comprising the water tank of the utility model and a shell and tube heat exchanger connected to the water tank.

[0023] The implementation of the heat pump system and water tank of the utility model has the following beneficial effects: the water tank sets at least two temperature detection elements on the outer wall of the water tank body by patch method, and sets the at least two temperature detection elements at intervals along the axial direction of the water tank body, thereby avoiding drilling holes on the outer wall of the water tank body for installation, reducing the number of holes on the water tank body, and thus avoiding water leakage problems in the water tank body. In addition, by installing the heating structure from the first end to the water tank body, water at a lower position and at a lower temperature can be heated, which is beneficial to ensure the temperature of the hot water output by the water tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0025] Figure 1 It is a schematic diagram of the water tank structure of the heat pump system in some embodiments of the utility model;

[0026] Figure 2 yes Figure 1 A schematic cross-sectional view of the water tank shown;

[0027] Figure 3 yes Figure 1 A schematic diagram of the partial structure of the water tank shown;

[0028] Figure 4 yes Figure 3 A schematic diagram of the partial structure of the water tank shown at another angle. DETAILED DESCRIPTION

[0029] 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 "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in specific directions, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0030] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installation" and "setting" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; 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", "third", 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", "third", etc. can explicitly or implicitly include one or more of the features. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0031] Figure 1 to Figure 2Some preferred embodiments of the heat pump system of the utility model are shown. The heat pump system is a trigeneration or digeneration device, which has the advantages of simple structure, no leakage, long service life and good user experience.

[0032] Further, in some embodiments, the heat pump system may include a housing (not shown), a water tank, and a shell and tube heat exchanger (not shown). The housing (not shown) may be used to accommodate the water tank and the shell and tube heat exchanger (not shown). The water tank may be used to store domestic hot water or a water source to be heated, and may output hot water for use by users. The shell and tube heat exchanger (not shown) may be connected to the water tank, and may be used to transport the hot water generated by heat exchange to the water tank.

[0033] Combined with Figure 3 to Figure 4 As shown, in some embodiments, the water tank may include a water tank body 10, at least two temperature detection elements 20, and a heating structure 30. The water tank body 10 may be a columnar structure, and the inner side is hollow, and is used to store domestic hot water or a water source to be heated. In some embodiments, there may be four temperature detection elements 20. It is understandable that in some other embodiments, the temperature detection elements 20 may not be limited to four, and may be two, three or more than four. Each temperature detection element 20 may be arranged on the outer wall of the water tank body 10 by a patch, which can avoid drilling holes on the outer wall of the water tank body 10 for installation, thereby reducing the number of holes on the water tank body 10, and thus avoiding water leakage of the water tank body 10. The four temperature detection elements 20 may be arranged at intervals along the axial direction of the water tank body 10, that is, the four temperature detection elements 20 may be located at different heights, corresponding to measuring the temperature of water at different water levels in the water tank body 10. The heating structure 30 is arranged in the water tank body 10, and is used to heat the water in the water tank body 10 to ensure the temperature of the water in the water tank body 10.

[0034] In some embodiments, the water tank body 10 can be an inner tank, and is made of dual-phase steel, and is a tank body as a whole. The water tank body 10 can have an axial direction, and when the water tank body 10 is placed on the installation plane, the axial direction of the water tank body 10 can be arranged perpendicular to the installation plane. The water tank body 10 has a first end 10a and a second end 10b in its axial direction, wherein the first end 10a can be arranged lower than the second end 10b, that is, when the water tank body 10 is placed, the first end 10a is closer to the installation plane than the second end 10b.

[0035] In some embodiments, a storage chamber 11 is formed inside the water tank body 10, and the storage chamber 11 can be used to store domestic hot water or water to be heated. The water tank body 10 is provided with a return port 12 at the first end 10a, and the return port 12 can be connected to the water inlet of the shell and tube heat exchanger (not shown), and the water to be heated in the water tank body 10 can be transported to the shell and tube heat exchanger (not shown) through the return port 12. A first water inlet 13 is provided on the side wall of the water tank body 10, and the first water inlet 13 can be connected to the water outlet of the shell and tube heat exchanger (not shown) for supplying hot water generated after heat exchange by the shell and tube heat exchanger (not shown). In some embodiments, the first inlet and outlet 13 has a first set distance to the first end 10a, and the first set distance can be greater than or equal to one-third of the distance between the first end 10a and the second end 10b, and less than or equal to two-thirds of the distance between the first end 10a and the second end 10b, so that hot water can be transported to a high position in the water tank body 10, which is conducive to hot water output. In some embodiments, the first inlet and outlet 13 can be installed at half the distance between the first end 10a and the second end 10b (i.e., at the middle position in the height direction of the water tank) to prevent the return port 12 connected to the shell and tube heat exchanger (not shown) and the first inlet and outlet 13 from being too close, which may cause waterway abnormality and make the hot water output by the shell and tube heat exchanger (not shown) quickly enter from the return port 12, resulting in low heating efficiency. In some embodiments, a second inlet and outlet 14 can be provided on the water tank body 10, and the second inlet and outlet 14 is located at the second end 10b, which can be used to output the hot water in the water tank body 10. By arranging the second inlet and outlet 14 at the second end 10b, it is also possible to prevent the water in the water tank body 10 from leaking from the second inlet and outlet 14 when the heat pump system is not in use. In some embodiments, a water replenishment port 15 is provided on the side wall of the water tank body 10, and the water replenishment port 15 can be used to connect to an external water source. The water replenishment port 15 has a second set distance to the first end 10a. The second set distance may be greater than zero and less than one third of the distance between the first end 10a and the second end 10b, that is, the water replenishment port 15 may be set lower than the first inlet and outlet 13.

[0036] In some embodiments, the temperature detection element 20 can be a temperature sensor, and four temperature detection elements 20 are spaced between the first end 10a and the second end 10b, wherein three temperature detection elements 20 can be located on the same straight line parallel to the axis, and the remaining temperature detection element 20 can be staggered with the three temperature detection elements 20, which can be used to detect water temperature data at different positions of the water tank body 10, and the water temperature data can be used to guide the external control system to select the optimal heating scheme, that is, the control system can obtain the change or distribution of the heat storage (percentage of hot water) of the water tank body 10 through the temperature detection element 20, so as to further accurately control the electric heater to meet user needs. In some other embodiments, the four temperature detection elements 20 can also be located on the same straight line parallel to the axis. The distances between the four temperature detection elements 20 can be set unequally. In some other embodiments, the four temperature detection elements 20 can also be set equidistantly.

[0037] like Figure 2 As shown, in some embodiments, the heating structure 30 can be an electric heater, which can be installed in the water tank body 10 from the first end 10a to heat water at a lower position and at a lower temperature, thereby facilitating the guarantee of the temperature of the hot water output by the water tank body 10. Specifically, the heating structure 30 can be selected as an electric heating rod, which can be arranged higher than the water return port 12.

[0038] Read also Figures 2 to 4 As shown, in some embodiments, the water tank further includes a first temperature control switch 40, which is arranged on the side wall of the water tank body 10. Specifically, the distance from the first temperature control switch 40 to the second end 10b may be less than the distance from the first end 10a, and the first temperature control switch 40 and the temperature detection element 20 located at the highest position are arranged at intervals in the circumference of the water tank body 10. The first temperature control switch 40 and the heating structure 30 can both be connected to a controller (not shown), so that the two are associated. When the temperature in the water tank body 10 reaches the first set temperature, the first temperature control switch 40 is in a disconnected state, so that the heating structure 30 is in a power-off state, that is, the heating structure 30 cannot be heated at this time. When the water tank body 10 is lower than the first set temperature, the first temperature control switch 40 is in a normally open state. Specifically, the first set temperature can be 75°C, that is, an abnormal temperature. When the temperature in the water tank body 10 reaches the first set temperature, the first temperature control switch 40 is disconnected, and the power supply of the heating structure 30 is cut off, thereby preventing dry burning. When the temperature in the water tank body 10 is lower than the first set temperature, the first temperature control switch 40 can be automatically reset, that is, it is in the open state, so that the heating structure 30 is restored to the power-on state, and the heating structure 30 can allow the heating work to be started.

[0039] In some embodiments, the water tank may further include a second temperature control switch 50, which may be disposed on the water tank body 10, specifically, on the first end 10a of the water tank body 10. Both the second temperature control switch 50 and the heating structure 30 may be connected to a controller (not shown), so that the two are associated. When the temperature in the water tank body 10 reaches the second set temperature, the second temperature control switch 50 may be in a disconnected state, so that the heating structure 30 is in a power-off state, that is, the heating structure 30 cannot be heated. The second set temperature may be greater than the first set temperature, and when the temperature in the water tank body 10 is lower than the second set temperature, the second temperature control switch 50 may be in a normally open state. In some embodiments, the second set temperature may be 95°C, which is an abnormal temperature. When the temperature in the water tank body 10 reaches 95°C, the second temperature control switch 50 is disconnected, and the power supply of the heating structure 30 may be cut off, thereby preventing dry burning. The second temperature control switch 50 is a manual reset switch. If the temperature in the water tank body 10 returns to normal, the second temperature control switch 50 needs to be manually reset, so that the heating structure 30 can be powered on, and the heating structure 30 can allow the heating operation to be started.

[0040] In some embodiments, the water tank further includes a blind tube 60, which can penetrate the water tank body 10 from the first end 10a. The blind tube 60 is a metal tube with one end closed and the other end open, and the closed end can be arranged toward the second end 10b. A temperature sensing probe can be arranged in the blind tube 60, and the temperature sensing probe can be arranged close to the heating structure 30, and can be used to sense the temperature in the water tank body 10. The second temperature control switch 50 can be connected to the temperature sensing probe. Specifically, the lead of the temperature sensing probe can be led out from the blind tube 60 and connected to the second temperature control switch 50.

[0041] In some embodiments, the water tank further includes a heat preservation structure 70, which can be sleeved on the outer periphery of the water tank body 10 and can be used to keep the water tank body 10 warm. In some embodiments, the heat preservation structure 70 can be heat preservation cotton. A through hole 71 can be provided on the heat preservation structure 70, and the through hole 71 can be arranged one-to-one with the temperature detection element 20, the first temperature control switch 40 and the second temperature control switch 50, so that the temperature detection element 20, the first temperature control switch 40 and the second temperature control switch 50 can be easily inspected and repaired. Specifically, the through hole 71 does not need to disassemble the heat preservation structure 70, and the temperature detection element 20 located at the through hole 71 can be inspected and repaired.

[0042] In some other embodiments, the water tank further comprises a corrosion-resistant metal rod, which can be inserted into the water tank body 10 from the second end 10b to prevent corrosion of the water tank body 10, especially to prevent corrosion of the water tank body 10 using a non-duplex steel structure. In some embodiments, the metal rod can be a magnesium rod.

[0043] 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 belong to the scope covered by the claims of the utility model.

Claims

1. A water tank, characterized in that: include: A water tank body (10) has an axial direction, and the water tank body (10) has a first end (10a) and a second end (10b) in the axial direction; the first end (10a) is arranged lower than the second end (10b); At least two temperature detection elements (20) are arranged on the outer wall of the water tank body (10) by means of patches, and are arranged at intervals along the axial direction of the water tank body (10); A heating structure (30) is installed in the water tank body (10) from the first end (10a).

2. The water tank according to claim 1, characterized in that: There are four temperature detection elements (20), and the four temperature detection elements (20) are arranged at intervals between the first end (10a) and the second end (10b).

3. The water tank according to claim 1, characterized in that The water tank further comprises a first temperature control switch (40) arranged on a side wall of the water tank body (10); the first temperature control switch (40) is used to be in an open state when the temperature in the water tank body (10) reaches a first set temperature, so that the heating structure (30) is in an off state; the first temperature control switch (40) is also used to be in an open state when the temperature in the water tank body (10) is lower than the first set temperature, so that the heating structure (30) is in an on state.

4. The water tank according to claim 3, characterized in that The water tank further comprises a second temperature control switch (50) arranged on the water tank body (10), wherein the second temperature control switch (50) is arranged at the first end (10a); The second temperature control switch (50) is used to be in an off state when the temperature in the water tank body (10) reaches a second set temperature, so that the heating structure (30) is in a power-off state; the second set temperature is greater than the first set temperature.

5. The water tank according to claim 4, characterized in that: The water tank further comprises a blind pipe (60) penetrating from the first end (10a) into the water tank body (10), wherein a temperature sensing probe is arranged on the blind pipe (60), and the temperature sensing probe is arranged close to the heating structure (30); The second temperature control switch (50) is connected to the temperature sensing probe.

6. The water tank according to claim 1, characterized in that A first inlet and outlet (13) for hot water input is arranged on the side wall of the water tank body (10); a first set distance exists between the first inlet and outlet (13) and the first end (10a); the first set distance is greater than or equal to one third of the distance between the first end (10a) and the second end (10b), and less than or equal to two thirds of the distance between the first end (10a) and the second end (10b); And / or, the water tank body (10) is provided with a second inlet and outlet (14) for hot water output, and the second inlet and outlet (14) is arranged at the second end (10b); And / or, a water replenishment port (15) is provided on the side wall of the water tank body (10), and a second set distance exists between the water replenishment port (15) and the first end (10a), and the second set distance is greater than zero and less than one third of the distance between the first end (10a) and the second end (10b); And / or, the water tank body (10) is provided with a water return port (12) at the first end (10a).

7. The water tank according to claim 1, characterized in that The water tank body (10) is a dual-phase steel inner tank.

8. The water tank according to claim 1, characterized in that The water tank further comprises a corrosion-resistant metal rod; the metal rod penetrates into the water tank body (10) from the second end (10b).

9. The water tank according to claim 1, characterized in that: The water tank further comprises a heat-insulating structure (70) arranged on the outer periphery of the water tank body (10); The heat-insulating structure (70) is provided with through holes (71), and the through holes (71) are arranged in a one-to-one correspondence with the temperature detection elements (20).

10. A heat pump system, characterized in that: It comprises the water tank as claimed in any one of claims 1 to 9, and a shell and tube heat exchanger connected to the water tank.

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