Heat exchange water storage tank capable of rapidly providing domestic hot water

Abstract

The utility model discloses a heat exchange water storage tank capable of rapidly providing domestic hot water, the heat exchange water storage tank comprises a front shell, a rear shell, a heat exchange coil pipe and a partition plate, the front shell and the rear shell form a shell with an annular bulge part and an inner concave part, the annular bulge part is provided with a first convex hull and a second convex hull, and the inner concave part is provided with a second convex hull. The first convex hull is provided with a heating hot water inlet and a domestic hot water outlet, the second convex hull is provided with a tap water inlet and a heating return water outlet, the heat exchange coil is connected with the heating hot water inlet and the heating return water outlet, the annular bulging part is divided into a preheating end and a heating end by the partition plate, the preheating end is connected with the tap water inlet, and the heating end is connected with the domestic hot water outlet. And the heating end is connected with the domestic hot water outlet. The heat exchange water storage tank has the functions of heat exchange and hot water storage, so that hot water can be discharged immediately without waiting when a hot water supply mode is started subsequently, the hot water waiting process of a user is greatly shortened, and waste of water resources is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water storage tanks, and particularly relates to a heat exchange water storage tank capable of quickly providing domestic hot water. Background Technique

[0002] A water storage tank is a facility for storing water resources, and a heat exchange water storage tank is a container that completes heat exchange between media inside by arranging a heat exchange coil inside, and can store the heated hot water for subsequent direct use.

[0003] Generally, due to its large size, a general heat exchange water storage tank is often installed outside the heating equipment. However, in some application scenarios such as gas-fired heating hot water boilers, since the gas-fired heating hot water boiler is installed in a place with a small space, it is difficult to place another heat exchange water storage tank. And the gas-fired heating hot water boiler mainly uses a plate heat exchanger for heat exchange. The plate heat exchanger is composed of multiple layers of heat exchange fins stacked together, so it only has a heat exchange function and does not have the function of storing hot water. Also, due to the small gap between layers of the heat exchange fins, the heat exchange channel is easily blocked, reducing the heat exchange efficiency. When the plate heat exchanger does not have the function of storing hot water, when the user needs to use domestic hot water, from the start of the hot water boiler to the time when hot water can be generated, stable hot water cannot be generated immediately. When applied to a condensing furnace model, since the main heat exchanger coil of the condensing furnace is long, the waiting time for generating stable hot water will be longer, resulting in a poor user experience of the hot water boiler, and cold water is directly drained during the waiting process, thus causing waste of water resources. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a heat exchange water storage tank capable of quickly providing domestic hot water to solve the above-mentioned traditional problems.

[0005] The utility model is realized by adopting the following technical scheme:

[0006] A heat exchange water storage tank capable of quickly providing domestic hot water includes a front shell, a rear shell, a heat exchange coil and a partition plate. After the front shell and the rear shell are assembled, a shell with an annular bulge and an inner depression is formed. The annular bulge is provided with a first convex bump and a second convex bump. The first convex bump is provided with a heating hot water inlet and a domestic hot water outlet. The second convex bump is provided with a tap water inlet and a heating return water outlet. The heat exchange coil is placed inside the annular bulge, and both ends of the heat exchange coil are respectively communicated with the heating hot water inlet and the heating return water outlet. The partition plate divides the inner cavity of the annular bulge into a preheating end and a heating end. The preheating end is communicated with the tap water inlet, and the heating end is communicated with the domestic hot water outlet.

[0007] Preferably, the heat exchange coil is in a spiral ring shape structure.

[0008] Preferably, a plurality of fins are further provided on the heat exchange coil, and the fins are uniformly distributed.

[0009] Preferably, the partition plate is a multi-layer partition plate, and there is a gap between each layer of the partition plates.

[0010] Preferably, the partition plate is of a hollow structure.

[0011] Preferably, the partition plate is a rubber plate or a plastic plate.

[0012] Preferably, fixing holes are provided on opposite sides of the recessed portion, and the fixing holes are axially disposed through the recessed portion.

[0013] Preferably, the recessed portion is of a solid structure or a hollow structure.

[0014] Preferably, a first type of welded nut post is welded on the first convex hull, and the first type of welded nut post is located between the heating hot water inlet and the domestic hot water outlet, and a second type of welded nut post is welded on the second convex hull, and the second type of welded nut post is located between the tap water inlet and the heating return water outlet.

[0015] Preferably, the heat exchange water storage tank further includes a water temperature sensor and a mounting base. The annular bulging portion is provided with a mounting hole, and the mounting base is welded on the mounting hole. The mounting base cooperates with the mounting hole for mounting the water temperature sensor.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The heat exchange water storage tank of the present invention forms a plate heat exchanger capable of replacing the traditional technology through the cooperation of components such as the front shell, the rear shell, the heat exchange coil and the partition plate, and is installed in a gas heating hot water furnace. The heat exchange water storage tank has both the functions of heat exchange and hot water storage. When starting the hot water furnace, the water in the tank can be heated first, so that when the hot water supply mode is started subsequently, hot water can be immediately discharged without waiting, greatly shortening the user's waiting process for hot water and reducing the waste of water resources.

[0018] 2. The heat exchange water storage tank of the present invention has a space for storing water, so that the internal space is large and the passage is not easily blocked, and the traditional problem that the gap between the heat exchange fins in the traditional plate heat exchanger is small and the passage is blocked can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the heat exchange water storage tank of the present invention;

[0020] Figure 2 isFigure 1 Rear view of the heat exchange water storage tank shown

[0021] Figure 3 is Figure 1 Exploded view of the heat exchange water storage tank shown

[0022] Figure 4 is Figure 1 Schematic structural diagram of the heat exchange water storage tank shown installed in a heating / domestic hot water supply system

[0023] In the figure: 10, front housing; 11, first convex bulge; 110, heating hot water inlet; 111, domestic hot water outlet; 112, first type of welded nut post; 12, second convex bulge; 120, tap water inlet; 121, heating return water outlet; 122, second type of welded nut post; 13, mounting hole; 14, fixing hole; 20, rear housing; 30, heat exchange coil; 40, partition plate; 50, water temperature sensor; 51, mounting base Specific embodiments

[0024] In order to make the above-mentioned objects, features and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below

[0025] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined

[0026] In the description of the present utility model, it should be understood that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be intermediate elements present. On the contrary, when an element is referred to as being "directly" connected to another element, there are no intermediate elements

[0027] Please refer to Figures 1-4 , a heat exchange water storage tank capable of quickly providing domestic hot water according to a preferred embodiment of the present utility model, which is used to be installed in a heating / domestic hot water supply system to replace a plate heat exchanger, so that the domestic water heat exchange device in the gas heating hot water boiler directly has the functions of heat storage and heat exchange, achieving a miniaturized setting

[0028] Specifically, the heat exchange water storage tank includes a front housing 10, a rear housing 20, a heat exchange coil 30 disposed between the front housing 10 and the rear housing 20, and a partition plate 40. The front housing 10 is generally in a structure with an outer peripheral annular bulge and a middle inner depression. Similarly, the rear housing 20 is generally in a structure with an outer peripheral annular bulge and a middle inner depression. After the front housing 10 and the rear housing 20 are assembled, a housing with an annular bulge and a depression is formed. The annular bulge is provided with a first convex bump 11 and a second convex bump 12. The first convex bump 11 is provided with a heating hot water inlet 110 at the upper part and a domestic hot water outlet 111 at the lower part. The second convex bump 12 is provided with a tap water inlet 120 at the upper part and a heating return water outlet 121 at the lower part. The heat exchange coil 30 is placed inside the annular bulge. The two ends of the heat exchange coil 30 are respectively communicated with the heating hot water inlet 110 and the heating return water outlet 121. The partition plate 40 divides the inner cavity of the annular bulge into a preheating end and a heating end. The preheating end is communicated with the tap water inlet 120, and the heating end is communicated with the domestic hot water outlet 111, preventing the tap water from directly flowing out from the domestic hot water outlet 111 after coming in. The heating hot water after being heated by the system heats the tap water inside the annular bulge of the housing through the heat exchange coil 30. The flowing direction of the tap water is set to be countercurrent to the flowing direction of the heating hot water, which can effectively maintain the stability of the inlet and outlet water temperatures and improve the heat exchange efficiency between the two.

[0029] In one embodiment, the heat exchange coil 30 is in a spiral ring shape structure and surrounds the periphery of the inner depression in a spiral manner to buffer the system water inside. On the one hand, it can increase the heat exchange area and improve the heat exchange efficiency. On the other hand, it can extend the residence time of the system water in the housing. In other embodiments, a number of fins (not shown in the figure) are further provided on the heat exchange coil 30, and the fins are evenly distributed to further improve the heat exchange efficiency of the coil.

[0030] The partition plate 40 is disposed between the first convex bump 11 and the second convex bump 12, and its shape is similar to the cross section of the annular bulge. All its contact parts with the annular bulge are in sealed connection. In one embodiment, the partition plate 40 is made of materials with poor heat conduction effects such as rubber plates and plastic plates, or the partition plate 40 is a hollow structure, and the heat transfer efficiency of the partition plate 40 is reduced through the internal hollow structure. The partition plate 40 can also be made of materials such as 304 stainless steel. By providing multiple layers of partition plates with gaps between the layers, the heat transfer efficiency of the partition plate 40 is reduced.

[0031] The depression is a solid structure formed by the middle inner depression structure of the front housing 10 abutting against the middle inner depression structure of the rear housing 20, or the depression is a hollow structure to reduce the heat transfer efficiency of the depression. Fixing holes are provided on the opposite sides of the depression, and the fixing holes are axially disposed through the depression, and it can be fixed by bolts.

[0032] In some other embodiments, a first type of welded nut post 112 is welded on the first convex hull 11. The first type of welded nut post 112 is located between the heating hot water inlet 110 and the domestic hot water outlet 111. A second type of welded nut post 122 is welded on the second convex hull 12. The second type of welded nut post 122 is located between the tap water inlet 120 and the heating return water outlet 121. The first type of welded nut post 112 and the second type of welded nut post 122 cooperate to facilitate fixed installation with components such as a waterway valve body.

[0033] In this embodiment, the heat exchange water storage tank further includes a water temperature sensor 50 and a mounting base 51. The annular bulging portion is provided with a mounting hole 13. The mounting base 51 is welded on the mounting hole 13. The mounting base 51 and the mounting hole 13 cooperate to mount the water temperature sensor 50. The water temperature inside the heat exchange water storage tank is detected by the water temperature sensor 50. When the water tank temperature is lower than the set temperature, the water tank heating will be preferentially started, and the required domestic hot water can be provided in a timely manner. Optionally, the mounting hole 13 can be placed at any position of the heating end. Preferably, the mounting hole 13 is placed at the top of the annular bulging portion near the domestic hot water outlet 111 to facilitate better detection of the water temperature.

[0034] In the above embodiments, the front housing 10 and the rear housing 20 are both formed by die stamping, and the materials used are 304 stainless steel / copper and other materials. The connection gap between the front housing 10 and the rear housing 20 can be welded and sealed by brazing to form a complete sealed cavity. The heat exchange coil 30 is made of 304 stainless steel / copper and other materials.

[0035] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0036] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A heat exchange water storage tank capable of quickly providing domestic hot water, characterized in that: It includes a front shell, a rear shell, a heat exchange coil and a partition plate. The front shell and the rear shell are assembled to form a shell with an annular bulge and an inner recessed portion. The annular bulge is provided with a first convex hump and a second convex hump. The first convex hump is provided with a heating hot water inlet and a domestic hot water outlet. The second convex hump is provided with a tap water inlet and a heating return water outlet. The heat exchange coil is placed in the annular bulge. The two ends of the heat exchange coil are respectively connected with the heating hot water inlet and the heating return water outlet. The partition plate divides the inner cavity of the annular bulge into a preheating end and a heating end. The preheating end is connected with the tap water inlet, and the heating end is connected with the domestic hot water outlet.

2. The heat exchange water storage tank capable of quickly providing domestic hot water according to claim 1, characterized in that: The heat exchange coil is in a spiral ring structure.

3. The heat exchange water storage tank capable of quickly providing domestic hot water according to claim 2, characterized in that: The heat exchange coil is also provided with a plurality of fins, and the fins are evenly distributed.

4. The heat exchange water storage tank capable of quickly providing domestic hot water according to claim 1, characterized in that: The partition plates are multi-layer partition plates, and there are gaps between the partition plates in each layer.

5. The heat exchange water storage tank capable of quickly providing domestic hot water according to claim 1, characterized in that: The partition plate is a hollow structure.

6. The heat exchange water storage tank capable of quickly providing domestic hot water according to claim 1, characterized in that: The partition plate is a rubber plate or a plastic plate.

7. The heat exchange water storage tank capable of quickly providing domestic hot water according to claim 1, characterized in that: Fixing holes are arranged on opposite sides of the recessed portion, and the fixing holes are axially arranged through the recessed portion.

8. The heat exchange water storage tank capable of quickly providing domestic hot water according to claim 7, characterized in that: The recessed portion is a solid structure or a hollow structure.

9. The heat exchange water storage tank capable of quickly providing domestic hot water according to claim 1, characterized in that: A first type of welded nut column is welded on the first bulge, and the first type of welded nut column is located between the heating hot water inlet and the domestic hot water outlet. A second type of welded nut column is welded on the second bulge, and the second type of welded nut column is located between the tap water inlet and the heating return water outlet.

10. The heat exchange water storage tank capable of quickly providing domestic hot water according to claim 1, characterized in that: The heat exchange water storage tank also includes a water temperature sensor and a mounting base. The annular bulge is provided with a mounting hole, the mounting base is welded on the mounting hole, and the mounting base cooperates with the mounting hole to install the water temperature sensor.

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