Efficient displacement heat exchanger

Abstract

The utility model discloses an efficient displacement heat exchanger which comprises a shell, a heat exchange unit arranged in the shell, a heating medium inlet and a heating medium outlet. A plurality of heat exchange tube bundles are arranged in the heat exchange unit, and foam metal layers are arranged on the outer surfaces of the heat exchange tube bundles; and the heat exchange unit is connected with the heating medium inlet and outlet. A flow guide device is removed, and the foam metal layer is additionally arranged in the heat exchange unit, so that the heat exchange area of the outer surface of the heat exchange tube bundle is increased, and the heat exchange efficiency of the heat exchanger is improved. And meanwhile, the herringbone flow guide grooves are formed in the surface of the foam metal layer, so that fluid is disturbed, a stagnant water area is reduced, cold and hot water mixing is accelerated, the heat exchange effect is enhanced, and the heat supply speed is increased.

Description

Technical Field

[0001] The utility model relates to the field of heat exchangers, in particular to a high-efficiency volumetric heat exchanger. Background Art

[0002] A heat exchanger is a widely used heat exchange device. The heat exchange element of the volumetric water heater applied in various industries is in the form of a U-shaped tube or a coil, which is suitable for the domestic hot water heating system of general industrial and civil buildings. A flow guiding device is arranged inside the volumetric heat exchanger to eliminate the cold / stagnant water area and improve the heat exchange effect. However, in the actual use process, the installation of the flow guiding device is complex and the setting is unreasonable, resulting in slow mixing of cold and hot water, and uneven temperature of cold and hot water in the heat exchange tank, which affects the heating speed. Content of the Utility Model

[0003] The utility model overcomes the deficiencies in the prior art that the internal flow guiding device of the volumetric heat exchanger leads to low heating efficiency and uneven cold and heat, and provides a high-efficiency volumetric heat exchanger. To achieve the above purpose, the technical solution adopted by the utility model is: a high-efficiency volumetric heat exchanger, which is characterized by comprising: a shell, a heat exchange unit arranged in the shell, and a heat medium inlet and outlet.

[0004] A plurality of heat exchange tubes are arranged in the heat exchange unit, and a foam metal layer is arranged on the outer surface of the heat exchange tubes.

[0005] The heat exchange unit is connected to the heat medium inlet and outlet.

[0006] In a preferred embodiment of the utility model, a cold water inlet is arranged at the bottom of the shell, and a hot water outlet is arranged at the top of the shell.

[0007] In a preferred embodiment of the utility model, herringbone flow guiding grooves are arranged on the surface of the foam metal layer, and the liquid flow directions in adjacent flow guiding grooves are opposite.

[0008] In a preferred embodiment of the utility model, the foam metal layer is in interference fit with the heat exchange tubes.

[0009] In a preferred embodiment of the utility model, a safety valve interface, a thermometer port, a pressure gauge port and a manhole are further arranged on the shell; the positions of the thermometer port and the pressure gauge port are higher than those of the heater; the safety valve interface is arranged at the top of the shell; the manhole is arranged in the middle of the shell.

[0010] In a preferred embodiment of the utility model, the foam metal layer is made of foam copper, foam aluminum or foam nickel.

[0011] In a preferred embodiment of the present utility model, a number of through holes are provided on the foam metal layer, the aperture of the through holes is 3-4 mm, and the porosity is 80-95%.

[0012] The present utility model solves the defects existing in the background technology, and the present utility model has the following beneficial effects:

[0013] The present utility model removes the flow guiding device. By installing a foam metal layer in the heat exchange unit, the heat exchange area on the outer surface of the heat exchange tube bundle is increased, and the heat exchange efficiency of the heat exchanger is improved. At the same time, by arranging herringbone flow guiding grooves on the surface of the foam metal layer, a disturbing effect is generated on the fluid, reducing the stagnant area, accelerating the mixing of cold and hot water, enhancing the heat exchange effect, and improving the heating speed. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of an efficient volumetric heat exchanger described in an embodiment of the present utility model;

[0016] Figure 2 It is a schematic diagram of the foam metal layer of an efficient volumetric heat exchanger described in an embodiment of the present utility model.

[0017] The description of the reference numerals is as follows:

[0018] 1 - housing; 11 - safety valve interface; 12 - hot water outlet; 13 - cold water inlet; 14 - thermometer port; 15 - pressure gauge port; 16 - manhole; 21 - heat exchange unit; 22 - heat exchange tube bundle; 23 - foam metal layer; 231 - through hole; 232 - flow guiding groove; 24 - heat medium inlet and outlet. Detailed Description of the Invention

[0019] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific embodiments. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0020] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present application 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, it should not be construed as limiting the scope of protection of the present application. In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0021] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood through specific circumstances.

[0022] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0023] As Figure 1 shown, the present utility model discloses an efficient volumetric heat exchanger, which includes a housing 1 and a heat exchange unit 21 and a heat medium inlet and outlet 24 disposed in the housing 1. Among them, a cold water inlet 13 is provided at the bottom of the housing 1, and a hot water outlet 12 is provided at the top of the housing 1; the heat exchange unit 21 is connected to the heat medium inlet and outlet 24.

[0024] A number of heat exchange tubes 22 are provided in the heat exchange unit 21, and the material of the heat exchange tubes 22 is usually stainless steel or copper. A foam metal layer 23 is provided on the outer surface of the heat exchange tubes 22. The foam metal layer 23 is made of foam copper, foam aluminum or foam nickel.

[0025] Refer to Figure 2As shown, a number of through holes 231 are provided on the foam metal layer 23. The aperture of the through holes 231 is 3-4 mm, and the porosity is 80-95%. The through holes 231 and the flow guiding grooves 232 of the foam metal layer 23 can produce a disturbing effect on the fluid, reduce the stagnant water area, accelerate the mixing of cold and hot water, enhance the heat exchange effect, and improve the heating speed.

[0026] The surface of the foam metal layer 23 is provided with herringbone flow guiding grooves 232, and the liquid flows in opposite directions in adjacent flow guiding grooves 232. The foam metal layer 23 is in interference fit with the heat exchange tube bundle 22 to increase the heat exchange area on the outer surface of the heat exchange tube bundle 22.

[0027] Combined Figure 1 As shown, a safety valve interface 11, a thermometer port 14, a pressure gauge port 15 and a manhole 16 are further provided on the housing 1; the positions of the thermometer port 14 and the pressure gauge port 15 are higher than those of the shell-and-tube heater; the safety valve interface 11 is provided at the top of the housing 1; the manhole 16 is provided in the middle of the housing 1.

[0028] The present utility model removes the flow guiding device. By installing a foam metal layer 23 in the heat exchange unit 21, the heat exchange area on the outer surface of the heat exchange tube bundle 22 is increased, and the heat exchange efficiency of the heat exchanger is improved. At the same time, by providing herringbone flow guiding grooves 232 on the surface of the foam metal layer 23, a disturbing effect is produced on the fluid, the stagnant water area is reduced, the mixing of cold and hot water is accelerated, the heat exchange effect is enhanced, and the heating speed is improved.

[0029] The above embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting 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 utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. An efficient volumetric heat exchanger, characterized in that: include: A shell, a heat exchange unit and a heat medium inlet and outlet arranged in the shell; A plurality of heat exchange tube bundles are arranged in the heat exchange unit, and a foam metal layer is arranged on the outer surface of the heat exchange tube bundle; The heat exchange unit is connected to the heat medium inlet and outlet.

2. The high-efficiency volumetric heat exchanger according to claim 1, characterized in that: A cold water inlet is arranged at the bottom of the shell, and a hot water outlet is arranged at the top of the shell.

3. The high-efficiency volumetric heat exchanger according to claim 1, characterized in that: The surface of the foam metal layer is provided with herringbone guide grooves, and the liquids in adjacent guide grooves flow in opposite directions.

4. The high-efficiency volumetric heat exchanger according to claim 1, characterized in that: The foam metal layer is interference fit with the heat exchange tube bundle.

5. The high-efficiency volumetric heat exchanger according to claim 1, characterized in that: The shell is also provided with a safety valve interface, a thermometer port, a pressure gauge port and a manhole; the positions of the thermometer port and the pressure gauge port are higher than the heater; the safety valve interface is arranged at the top of the shell; and the manhole is arranged in the middle of the shell.

6. The high-efficiency volumetric heat exchanger according to claim 1, characterized in that: The foam metal layer is made of foam copper, foam aluminum or foam nickel.

7. The high-efficiency volumetric heat exchanger according to claim 1, characterized in that: The foam metal layer is provided with a plurality of through holes, the aperture of the through holes is 3-4 mm, and the porosity is 80-95%.

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