Heat exchange device and hot water system

Abstract

The utility model provides a heat exchange device and a hot water system. The hot water system comprises a water storage container, the heat exchange device comprises a heat exchanger, the heat exchanger comprises a shell and a fin heat exchange tube located in the shell, the shell is provided with a tube pass inlet, a tube pass outlet, a shell pass inlet and a shell pass outlet, and the tube pass inlet and the tube pass outlet are communicated through a heat exchange tube; wherein the tube pass inlet is connected with an exhaust port of the water storage container, and the tube pass outlet is communicated with a liquid inlet of the water storage container; the shell pass inlet and the shell pass outlet are communicated with the external environment, and the shell pass outlet located on the upper portion is provided with a self-operated fan. Therefore, a good condensation effect on the high-temperature water vapor in the water storage container can be ensured, condensate water recovery is realized, hot water loss is avoided, consumption of electric energy and water resources is not needed, and the purposes of energy conservation and consumption reduction are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a heat exchange device and a hot water system. Background Art

[0002] At present, when the water temperature of the hot water system used in production exceeds 90℃, such as when the water temperature is close to 100℃, a large amount of water vapor will be generated. In order to reduce the loss of water resources, a water chiller connected to the water storage container is usually added, and the water vapor flowing through the water chiller is cooled by circulating cooling water, and the condensed water of the water vapor is returned to the water storage container. Although this method has a condensation effect on water vapor and reduces the waste of water resources, it consumes electricity to supply circulating cooling water to the heat exchanger, and after the heat of the water vapor is converted to the circulating cooling water system, it also needs to be cooled in the cooling tower, which will cause some water resources to be lost and waste energy. Utility Model Content

[0003] In view of this, the utility model provides a heat exchange device and a hot water system, which can not only ensure a good condensation effect on the high-temperature water vapor in the water storage container, realize condensed water recovery, and avoid hot water loss, but also simplify the consumption of electricity and water resources, achieving the purpose of energy saving and consumption reduction.

[0004] The first aspect of the utility model provides a heat exchange device for a hot water system, the hot water system includes a water storage container, the heat exchange device includes: a heat exchanger, the heat exchanger includes a shell and finned heat exchange tubes located in the shell, the shell is provided with a tube side inlet, a tube side outlet, a shell side inlet, and a shell side outlet, the tube side inlet and the tube side outlet are connected through the finned heat exchange tube, the tube side inlet is connected to the exhaust port of the water storage container, the tube side outlet is connected to the liquid inlet of the water storage container, the shell side inlet and the shell side outlet are connected to the external environment; a self-powered fan is installed at the shell side outlet, and the shell side outlet is located above the shell side inlet.

[0005] Furthermore, the shell side outlet is located at the top of the shell, the shell side inlet is located at the bottom of the shell, and the opening area of ​​the shell side outlet is smaller than the opening area of ​​the shell side inlet.

[0006] Furthermore, the pipe side outlet is also configured to communicate with the external environment.

[0007] Furthermore, the fin heat exchange tube is made of a heat-conducting metal material.

[0008] Furthermore, the shell includes a first section and a second section, the shell outlet is arranged at the first end of the first section, the second end of the first section is connected to the first end of the second section, and the shell inlet is arranged at the second end of the second section; wherein, the cross-sectional area of ​​the first section gradually increases from the first end to the second end, and the cross-sectional area of ​​each part of the second section is the same.

[0009] Furthermore, the shell has a conical structure with a small diameter end and a large diameter end, the shell side outlet is arranged at the small diameter end, and the shell side inlet is arranged at the large diameter end.

[0010] A second aspect of the utility model provides a hot water system, comprising: a water storage container, the water storage container is provided with an exhaust port and a liquid inlet, and the high-temperature water vapor in the water storage container is discharged through the exhaust port; and the heat exchange device of any one of the first aspects.

[0011] Furthermore, the hot water system also includes: an air intake pipeline connecting the exhaust port and the pipe inlet of the heat exchange device; a valve arranged on the air intake pipeline, the valve being used to control the on-off status of the exhaust port and the pipe inlet.

[0012] The heat exchange device and hot water system provided by the embodiment of the utility model include a heat exchanger and a self-powered fan. The pipe side inlet of the heat exchanger is connected to the exhaust port of the water storage container, so that the water vapor with higher temperature in the water storage container flows into the interior of the heat exchange tube through the exhaust port and the pipe side inlet. Since the heat exchange tube has good thermal conductivity, the heat of the water vapor will be heat-exchanged with the air in the shell through the heat exchange tube, and then the high-temperature water vapor in the heat exchange tube will be condensed. Since the pipe side outlet is connected to the liquid inlet of the water storage container, the cooled condensed water will return to the water storage container through the pipe side outlet and the liquid inlet, thereby realizing the recovery of condensed water and the recycling of water resources. At the same time, since the shell inlet and shell outlet of the heat exchanger in this embodiment are both connected to the external environment, a self-powered fan is installed at the shell outlet located above. In this way, the high-temperature gas after heat exchange in the shell flows into the external environment through the shell outlet and drives the self-powered fan to rotate, which can ensure that the heat exchange tube has a good heat exchange capacity, and the self-powered fan effectively utilizes the air in natural resources for driving. Compared with the related technology of using circulating cooling water to cool the water vapor flowing through the heat exchanger, which requires electricity to transport cooling water and causes part of the water resources to be lost in the cooling tower, it simplifies the use of electricity and avoids the waste of water resources, that is, there is no need to increase other electricity and water consumption, which greatly saves electricity and water resources, achieves the purpose of energy saving and consumption reduction, and is suitable for promotion and application.

[0013] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only used for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used throughout the accompanying drawings to represent the same components. Among them:

[0015] Figure 1 A structural schematic diagram of a hot water system provided by an embodiment of the related art is shown;

[0016] Figure 2 A structural schematic diagram of a hot water system provided by an embodiment of the utility model is shown;

[0017] Figure 3 A structural schematic diagram of a heat exchange device provided by an embodiment of the utility model is shown.

[0018] in, Figure 1 The corresponding relationship between the reference numerals and the component names is as follows:

[0019] 100' heat exchange device, 110' water cooler, 112' steam inlet, 113' condensed water outlet, 114' cooling medium inlet, 115' cooling medium outlet, 200' hot water system, 210' water storage container, 211' exhaust port, 212' liquid inlet;

[0020] in, Figure 2 and Figure 3 The corresponding relationship between the reference numerals and the component names is as follows:

[0021] 100 heat exchange device, 110 heat exchanger, 111 shell, 1111 first section, 1112 second section, 112 tube side inlet, 113 tube side outlet, 114 shell side inlet, 115 shell side outlet, 116 finned heat exchange tube, 120 fan, 200 hot water system, 210 water storage container, 211 exhaust port, 212 liquid inlet, 220 valve. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0023] Refer to the following Figure 2 and Figure 3The heat exchange device 100 and the hot water system 200 provided according to some embodiments of the utility model are described. Specifically, the heat exchange device 100 can be applied to the hot water system 200, and the hot water system 200 can be used in the application scenario of providing hot water for production. It can be understood that in some possible cases, the hot water system 200 can also be used in the application scenario of providing hot water for life. For the application scenario of the hot water system 200, the utility model does not provide a specific description.

[0024] Among them, Figure 2 As shown, the hot water system 200 may include a water storage container 210, which is at least used to hold hot water. Specifically, the water storage container 210 may be a container for holding hot water, such as a hot water tank, a hot water bucket, etc.; or, the water storage container 210 may be a container for holding water and a heating component arranged in the container to heat the water, such as a water heater, etc. It is understandable that when the temperature of the hot water in the water storage container 210 exceeds 90 degrees, such as when the water temperature is close to 100 degrees, a large amount of water vapor will be generated.

[0025] Furthermore, if Figure 2 As shown, the water storage container 210 is provided with an exhaust port 211 and a liquid inlet 212 , wherein the water vapor generated in the water storage container 210 can be discharged to the outside of the water storage container 210 through the exhaust port 211 , and the liquid inlet 212 is used to allow external liquid to flow into the water storage container 210 .

[0026] like Figure 1As shown, the hot water system 200' in the related art includes a water storage container 210' and a water cooler 110', and the water cooler 110 includes a steam inlet 112', a condensed water outlet 113', a cooling medium inlet 114' and a cooling medium outlet 115'. Specifically, the cooling medium can be cooling water, that is, the water cooler 110' is a heat exchanger for cooling by a circulating cooling water system. Among them, the steam inlet 112' is connected to the exhaust port 211' of the water storage container 210', and the condensed water outlet 113' is connected to the liquid inlet 212' of the water storage container 210'. In this way, in the hot water system 200' in the related art, the high-temperature water vapor in the water storage container 210' flows into the heat exchanger 110' through the exhaust port 211' and the steam inlet 112', exchanges heat with the circulating cooling water system in the water cooler 110', and is cooled to become condensed water, which is returned to the water storage container 210' through the condensed water outlet 113' and the liquid inlet 212'. Since the circulating cooling water system supplies the interior of the water cooler 110', it consumes electric energy, and after the heat of the water vapor is converted to the circulating cooling water system, it also needs to be cooled in the cooling tower, which will cause some water resources to be lost and waste energy. In other words, although this method realizes the cooling and temperature reduction of the water vapor and returns the condensed water to the water storage container 210', it still consumes electric energy and part of the circulating cooling water, wasting energy.

[0027] In view of this, if Figure 2 and Figure 3 As shown, in the first aspect of the utility model, a heat exchange device 100 is provided, which is used in a hot water system 200. The heat exchange device 100 includes: a heat exchanger 110, the heat exchanger 110 includes a shell 111 and a finned heat exchange tube 116 located in the shell 111, the shell 111 is provided with a tube side inlet 112, a tube side outlet 113, a shell side inlet 114, and a shell side outlet 115, the tube side inlet 112 and the tube side outlet 113 are connected through the finned heat exchange tube 116, the tube side inlet 112 is connected to the exhaust port 211 of the water storage container 210, the tube side outlet 113 is connected to the liquid inlet 212 of the water storage container 210, and the shell side inlet 114 and the shell side outlet 115 are connected to the external environment; a self-powered fan 120 is installed at the shell side outlet 115, and the shell side outlet 115 is located above the shell side inlet 114.

[0028] The finned heat exchange tube 116 of the heat exchanger 110 is located in the shell 111, the tube side inlet 112 and the tube side outlet 113 are connected through the finned heat exchange tube 116, the shell side inlet 114 and the shell side outlet 115 can be connected through the medium channel in the shell 111, and the medium channel is located outside the finned heat exchange tube 116 and inside the shell 111, that is, the medium channel and the finned heat exchange tube 116 are two independent medium channels. Specifically, the heat exchanger 110 can be configured similar to a shell and tube heat exchanger.

[0029] The self-powered fan 120 can be understood as an unpowered fan, which uses the natural wind speed to drive the fan turbine to rotate, and uses the principle of indoor and outdoor (or indoor and outdoor) air convection to accelerate and transform any parallel air flow into a vertical air flow from bottom to top, so as to improve the indoor (or indoor) ventilation effect. The fan does not require electricity, is noiseless, and can operate for a long time.

[0030] The heat exchange device 100 provided in this embodiment includes a heat exchanger 110 and a self-powered fan 120. The tube side inlet 112 of the heat exchanger 110 is connected to the exhaust port 211 of the water storage container 210, so that the water vapor with higher temperature in the water storage container 210 flows into the interior of the fin heat exchange tube 116 through the exhaust port 211 and the tube side inlet 112. Since the fin heat exchange tube 116 has good thermal conductivity, the heat of the water vapor will be transferred to the fin heat exchange tube 116, and the fin heat exchange tube 116 will then exchange heat with the air in the shell 111, thereby being able to cool down the high-temperature water vapor in the fin heat exchange tube 116, so that the high-temperature water vapor becomes condensed water after cooling. Since the tube side outlet 113 is connected to the liquid inlet 212 of the water storage container 210, the cooled condensed water will return to the water storage container 210 through the tube side outlet 113 and the liquid inlet 212, thereby realizing the recovery of condensed water and the recycling of water resources. Specifically, Figure 2 and Figure 3 The direction indicated by the solid arrow in FIG. 1 can be understood as the flow direction of the water vapor in the water storage container 210 through the heat exchanger 110 .

[0031] At the same time, the shell side inlet 114 and the shell side outlet 115 of the heat exchanger 110 in this embodiment are both connected to the external environment, the shell side outlet 115 is located above the shell side inlet 114, and a self-powered fan 120 is installed at the shell side outlet 115 located above. In this way, the air with a lower temperature in the external environment enters the shell 111 from the lower shell side inlet 114 to exchange heat with the fin heat exchange tube 116 with a higher temperature through which water vapor passes, so that the temperature of the fin heat exchange tube 116 is reduced to condense the water vapor in the fin heat exchange tube 116, and then the gas with a higher temperature in the shell 111 flows into the external environment through the shell side outlet 115 located above, and drives the turbine of the self-powered fan 120 to rotate, so that the interior and external environment of the shell 111 can form a circulating airflow passage to ventilate and dissipate heat for the fin heat exchange tube 116 located inside the shell 111, thereby ensuring that the fin heat exchange tube 116 has a good heat exchange capacity. Specifically, Figure 2 and Figure 3 The direction indicated by the dotted arrow in the figure can be understood as the flow direction of the external environment airflow and the airflow of the heat exchanger 110.

[0032] Since the self-powered fan 120 is an unpowered fan, it effectively utilizes the air in natural resources and simplifies the supply of electric energy for driving the turbine of the fan to rotate. Compared with the related technology of using circulating cooling water to cool the water vapor flowing through the heat exchanger, which requires electricity to transport cooling water and causes part of the water resources to be lost in the cooling tower, it simplifies the use of electric energy and avoids the waste of water resources, that is, there is no need to increase other electric energy and water consumption, which greatly saves electric energy and water resources, achieves the purpose of energy saving and consumption reduction, and is suitable for promotion and application.

[0033] like Figure 3 As shown, in the above embodiment, the self-powered fan 120 is connected to the shell 111 and is located at the shell outlet 115, that is, the outer shell of the fan 120 is connected to the shell 111 of the heat exchanger 110, and the fan 120 is installed on the shell 111. This arrangement can simplify the arrangement of the installation structure of the fan 120 and meet the design requirements of the heat exchange device 100 with a compact structure and a small size.

[0034] It can be understood that in other embodiments, the heat exchanger 110 may also include an air outlet duct, a first end of the air outlet duct is connected to the shell outlet 115, and a second end of the air outlet duct is connected to the external environment. That is to say, the air flow inside the shell 111 flows into the external environment through the shell outlet 115 and the air outlet duct. In this case, the self-powered fan 120 can be installed on the air outlet duct so that the self-powered fan 120 can be connected to the shell outlet 115. At the same time, an installation position is provided for the self-powered fan 120.

[0035] like Figure 3 As shown, in the above embodiment, the fin heat exchange tube 116 can be made of a heat-conducting metal material, such as a copper tube or an aluminum tube with fins. Copper and aluminum have good thermal conductivity, thereby ensuring a good condensation effect. Specifically, the fin heat exchange tube 116 can be a copper tube.

[0036] like Figure 2 As shown, in some possible embodiments provided by the present invention, the heat exchanger 110 is arranged above the water storage container 210, that is, the tube side inlet 112 on the heat exchanger 110 is located above the exhaust port 211 of the water storage container 210, so that the high-temperature water vapor can quickly and fully flow into the fin heat exchange tube 116 through the exhaust port 211 and the tube side inlet 112, thereby improving the condensation efficiency of the water vapor.

[0037] like Figure 2As shown, in some possible embodiments provided by the present invention, the shell outlet 115 is located at the top of the shell 111, and the shell inlet 114 is located at the bottom of the shell 111. The opening area of ​​the shell outlet 115 is smaller than the opening area of ​​the shell inlet 114, that is, the shell outlet 115 is set to a tightening structure relative to the shell inlet 114, that is, the shell 111 is set to a shrinking structure in the direction from the shell inlet 114 to the shell outlet 115. Therefore, when the high-temperature water vapor in the water storage container 210 enters the fin heat exchange tube 116, the heat is transferred to the fin heat exchange tube 116, and the fin heat exchange tube 116 exchanges heat with the air in the shell 111 near the fin heat exchange tube 116. After the heat exchange, the fin heat exchange tube 116 The hot air outside the heat pipe 116 generates an upward force due to its low density. Since the opening area of ​​the upper shell outlet 115 is smaller than the opening area of ​​the lower shell inlet 114, a wind tube effect can be generated, so that the airflow in the shell 111 runs from the shell inlet 114 to the shell outlet 115 from bottom to top, which can drive the turbine of the self-powered fan located at the shell outlet 115 to rotate, so as to improve the efficiency of the upward flow of the airflow inside the shell 111, and thus improve the circulation efficiency of the airflow inside the shell 111 and the external ambient airflow, so as to ensure that the airflow has a good heat exchange effect on the fin heat exchange tube 116, and to ensure that the fin heat exchange tube 116 has a good heat exchange effect on the water vapor flowing through it.

[0038] like Figure 2 and Figure 3 As shown, in some possible embodiments provided by the present invention, the tube-side outlet 113 is also configured to be connected to the external environment. Since the condensed water flowing to the liquid inlet 212 through the tube-side outlet 113 will carry some uncondensed gas, the uncondensed gas in the condensed water flowing out of the tube-side outlet 113 can be discharged into the external environment, such as into the atmosphere, by configuring the tube-side outlet 113 to be connected to the external environment. This can reduce the impact of the uncondensed gas flowing into the water storage container 210 on the volume of the water storage container 210.

[0039] Specifically, the heat exchange device 100 may also include a drainage pipeline, a first end of the drainage pipeline is connected to the pipe outlet 113, and a second end of the drainage pipeline is connected to the liquid inlet 212 of the water storage container 210. A vent is provided on the drainage pipeline to connect the pipe outlet 113 with the external environment, that is, part of the uncondensed gas flowing out through the pipe outlet 113 is discharged to the external environment through the drainage pipeline and the vent and flows into the atmosphere.

[0040] like Figure 2 and Figure 3As shown, in some possible embodiments provided by the present invention, the shell 111 includes a first section 1111 and a second section 1112, a shell outlet 115 is arranged at a first end of the first section 1111, the second end of the first section 1111 is connected to the first end of the second section 1112, and a shell inlet 114 is arranged at the second end of the second section 1112, that is, the shell 111 is provided with a first section 1111 and a second section 1112 connected from top to bottom, a shell outlet 115 is arranged at the top of the first section 1111, and a shell inlet 114 is arranged at the bottom of the second section 1112, so as to ensure that the airflow in the shell 111 flows into the external environment from bottom to top and forms a circulation passage with the airflow of the external environment.

[0041] The cross-sectional area of ​​the first section 1111 gradually increases from the first end to the second end, and the cross-sectional area of ​​the second section 1112 is the same at all places, that is, the first section 1111 is a tightening structure from the bottom to the top, and the second section 1112 is a through-hole interface, that is, the shape of the shell 111 is an irregular figure, the first section 1111 can be a conical structure, and correspondingly, the second section 1112 can be a cylindrical structure. Alternatively, the first section 1111 can be a pyramid structure, and correspondingly, the second section 1112 can be a corresponding polygonal structure, thereby realizing the diversification of the structure of the shell 111. And the opening area of ​​the shell outlet 115 located at the top of the first section 1111 can be smaller than the opening area of ​​the shell inlet 114 located at the bottom of the second section 1112, so that the high-temperature water vapor in the water storage container 210 enters the fin heat exchange tube 116 and exchanges heat with the fin heat exchange tube 116, and the fin heat exchange tube 116 exchanges heat with the air near the fin heat exchange tube 116 in the shell 111. After heat exchange, the hot air outside the fin heat exchange tube 116 generates upward power due to its low density. Since the shell outlet 115 is a tightening structure relative to the shell inlet 114, a wind tunnel effect can be generated. At the same time, the first section 1111 of the shell 111 has a good guiding effect on the circulation of the airflow outside the fin heat exchange tube 116 in the shell 111, so that the airflow can flow quickly and smoothly from the shell inlet 114 to the shell outlet 115, so as to further ensure that the wind tunnel effect can be generated.

[0042] The finned heat exchange tube 116 is installed in the second section 1112 . Since the second section 1112 is cylindrical or polygonal, it can provide sufficient installation space for the finned heat exchange tube 116 .

[0043] In another example (not shown in the figure), the shell 111 is a conical structure with a small diameter end and a large diameter end, the shell outlet 115 is arranged at the small diameter end, and the shell inlet 114 is arranged at the large diameter end. The shell 111 with a conical interface is convenient for processing and easy to produce. At the same time, the shell outlet 115 can be a tightened structure relative to the shell inlet 114, so that the high-temperature water vapor in the water storage container 210 enters the fin heat exchange tube 116 and transfers the heat to the fin heat exchange tube 116. The fin heat exchange tube 116 exchanges heat with the air near the fin heat exchange tube 116 in the shell 111. After the heat exchange, the hot air outside the fin heat exchange tube 116 generates upward power due to its low density. Since the shell outlet 115 is a tightened structure relative to the shell inlet 114, a wind tube effect can be generated. At the same time, the conical shell 111 has a good guiding effect on the flow of air outside the fin heat exchange tube 116, so that the air flow can flow quickly and smoothly from the shell inlet 114 to the shell outlet 115, so as to further ensure that the wind tube effect can be produced. It can be understood that in this case, the fin heat exchange tube 116 can be arranged close to the large diameter end of the shell 111, so that more fin heat exchange tubes 116 can be arranged in the effective space to improve the heat exchange efficiency.

[0044] like Figure 2 As shown, the second aspect of the present invention provides a hot water system 200, including: a water storage container 210, the water storage container 210 is provided with an exhaust port 211 and a liquid inlet 212, and a heat exchange device 100 as any embodiment of the first aspect. Since the hot water system 200 includes the heat exchange device 100 of any of the above embodiments, it has all the effects of the above heat exchange device 100, which will not be described one by one here.

[0045] Furthermore, the hot water system 200 also includes an air intake pipeline, a first end of which is connected to the exhaust port 211 on the water storage container 210, and a second end of which is connected to the tube side inlet on the heat exchanger 110, thereby allowing the high-temperature water vapor in the water storage container 210 to pass through the exhaust port 211, the air intake pipeline, and the tube side inlet 112 to enter the fin heat exchange tube 116 for cooling.

[0046] Furthermore, the hot water system 200 also includes a valve 220, which is arranged on the air intake pipeline. The valve 220 is used to control the on-off status of the air intake pipeline at the location, and thus can control the on-off status of the exhaust port 211 and the pipe inlet 112.

[0047] Specifically, the hot water system 200 may further include a control device, a temperature detection device may be provided on the water storage container 210, the control device is electrically connected to the temperature detection device and the valve 220, and controls the switch state of the valve 220 according to the detection result of the temperature detection device. Specifically, the temperature detection device is used to detect the temperature of the hot water in the water storage container 210. When the temperature of the hot water reaches the preset requirement, it indicates that a large amount of water vapor will be generated. The preset temperature may be 90°C, 92°C, 95°C, 96°C, or other temperatures. When the temperature of the hot water in the water storage container 210 reaches the preset requirement, the temperature detection device can send a high temperature signal, and the control device can control the valve 220 to open according to the high temperature signal, so that the exhaust port 211 of the water storage container 210 and the pipe side inlet 112 of the heat exchanger 110 are connected, and the high temperature water vapor in the water storage container 210 flows into the fin heat exchange tube 116 through the exhaust port 211, the air intake pipeline, and the pipe side inlet 112, and after being heat-exchanged into condensed water by the fin heat exchange tube 116, it flows into the water storage container 210 through the pipe side outlet 113 and the liquid inlet 212. When the temperature in the water storage container 210 drops to not reach the preset requirement, the temperature detection device can send a reset signal, and the control device can control the valve 220 to close according to the reset signal, and the exhaust port 211 of the water storage container 210 and the pipe side inlet 112 of the heat exchanger 110 are isolated to ensure the airtightness of the water storage container 210.

[0048] It is understandable that the water storage container 210 may also be provided with a water inlet and a water outlet, so that water can enter the water storage container 210 for storage, and the water storage container 210 can supply hot water to the outside. Specifically, the water inlet and the liquid inlet 212 may be provided in combination or separately.

[0049] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the terms "upper" and "lower" indicate positions or positional relationships based on the positions or positional relationships described in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat exchange device for a hot water system, the hot water system comprising a water storage container, characterized in that: The heat exchange device comprises: A heat exchanger, the heat exchanger comprising a shell and a finned heat exchange tube located in the shell, the shell being provided with a tube-side inlet, a tube-side outlet, a shell-side inlet, and a shell-side outlet, the tube-side inlet and the tube-side outlet being communicated with each other through the finned heat exchange tube, the tube-side inlet being connected to the exhaust port of the water storage container, the tube-side outlet being communicated with the liquid inlet of the water storage container, and the shell-side inlet and the shell-side outlet being communicated with the external environment; A self-powered fan is installed at the shell side outlet, and the shell side outlet is located above the shell side inlet.

2. The heat exchange device according to claim 1, characterized in that: The shell side outlet is located at the top of the shell, the shell side inlet is located at the bottom of the shell, and the opening area of ​​the shell side outlet is smaller than the opening area of ​​the shell side inlet.

3. The heat exchange device according to claim 1, characterized in that: The tube side outlet is also configured to communicate with the external environment.

4. The heat exchange device according to claim 1, characterized in that: The fin heat exchange tube is made of heat-conducting metal material.

5. The heat exchange device according to claim 2, characterized in that: The shell comprises a first section and a second section, the shell side outlet is arranged at a first end of the first section, the second end of the first section is connected to the first end of the second section, and the shell side inlet is arranged at a second end of the second section; The cross-sectional area of ​​the first section gradually increases from the first end to the second end, and the cross-sectional areas of the second section are the same at all locations.

6. The heat exchange device according to claim 2, characterized in that: The shell is in a conical structure with a small diameter end and a large diameter end. The shell side outlet is arranged at the small diameter end, and the shell side inlet is arranged at the large diameter end.

7. A hot water system, characterized in that: include: A water storage container, wherein the water storage container is provided with an exhaust port and a liquid inlet, and the high-temperature water vapor in the water storage container is discharged through the exhaust port; as well as The heat exchange device according to any one of claims 1 to 6.

8. The hot water system according to claim 7, characterized in that: Also includes: An air inlet pipeline connecting the exhaust port and the pipe inlet of the heat exchange device; A valve is arranged on the air inlet pipeline, and the valve is used to control the on-off status of the exhaust port and the pipe inlet.

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