Fluid heating device, hydraulic module and heating and ventilation equipment

Abstract

The utility model discloses a fluid heating device, a hydraulic module and heating and ventilation equipment, and the fluid heating device comprises a cavity shell assembly, a heating body, an exhaust valve and a flow guide structure; a heating cavity is formed in the cavity shell assembly, a liquid inlet, a liquid outlet and an exhaust port are formed in the cavity shell assembly at intervals, and the liquid inlet, the liquid outlet and the exhaust port all communicate with the heating cavity; the heating body is connected with the cavity shell assembly and used for heating liquid flowing through the heating cavity. The exhaust valve is connected with the cavity shell assembly and is arranged at the exhaust port; the flow guide structure is arranged in the heating cavity and used for disturbing liquid flowing from the liquid inlet to the liquid outlet so that at least part of bubbles carried in the liquid can be separated out and discharged through the exhaust valve. According to the technical scheme, the separation efficiency of the gas contained in the fluid heated in the fluid heating device can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heating ventilation systems, in particular to a fluid heating device, a water power module and a heating ventilation equipment. BACKGROUND

[0002] Traditional air source heat pump water heaters cannot meet people's needs when heating in cold regions in winter because the low-temperature heating efficiency of the air source heat pump water heater is affected by the low temperature, the capacity attenuation is large, and the air source heat pump water heater cannot meet people's needs, thereby limiting the popularization and application of such equipment in the region. If a larger power device is used to solve this problem, it is not economical.

[0003] In related technologies, a scheme of heating a small water tank by connecting electricity in the waterway can heat the water that does not reach the set temperature, thereby making up for the water side heat exchange capacity at low temperature. This scheme is less affected by the environment temperature, has high thermal efficiency at low temperature, and can guarantee the comfort of customers.

[0004] However, since the electric heating small water tank has a certain space volume and is provided with electric heating wires with high surface temperature, if R290 or other gaseous combustible refrigerants are leaked into the water and transferred to the electric heating small water tank, timely separation is needed to ensure that there is no risk of combustion and explosion in the electric heating small water tank. How to improve the exhaust efficiency of the electric heating small water tank has become a problem to be solved. Utility model content

[0005] The embodiments of the present application provide a fluid heating device, a water power module and a heating ventilation equipment, which can improve the separation efficiency of the gas contained in the fluid heated in the fluid heating device.

[0006] In a first aspect, the embodiments of the present application provide a fluid heating device, which comprises a cavity shell assembly, a heating body, an exhaust valve and a flow guide structure. A heating cavity is formed in the cavity shell assembly, and a liquid inlet, a liquid outlet and an exhaust port are arranged at intervals. The liquid inlet, the liquid outlet and the exhaust port are in communication with the heating cavity. The heating body is connected with the cavity shell assembly and is used for heating the liquid flowing through the heating cavity. The exhaust valve is connected with the cavity shell assembly and is arranged at the exhaust port. The flow guide structure is arranged in the heating cavity and is used for disturbing the liquid flowing from the liquid inlet to the liquid outlet, so as to separate at least part of the bubbles carried in the liquid and discharge the bubbles by the exhaust valve.

[0007] In some embodiments, the flow guide structure comprises a plurality of flow guide plates, the plurality of flow guide plates are arranged in the heating cavity in a direction of liquid flow from the liquid inlet to the liquid outlet, the plurality of flow guide plates and the cavity wall of the heating cavity cooperatively define a flow guide channel for guiding liquid from the liquid inlet to the liquid outlet, wherein the flow guide channel extends in a spiral shape.

[0008] In some embodiments, the flow guide plate is connected to the cavity wall of the heating cavity, opposite surfaces of the flow guide plate in the thickness direction are planar, and the surfaces of the flow guide plate are perpendicular to the central axis of the heating cavity.

[0009] In some embodiments, the normal projections of two adjacent flow guide plates along the extension direction of the central axis of the heating cavity are partially overlapped.

[0010] Alternatively, the normal projections of two adjacent flow guide plates along the extension direction of the central axis of the heating cavity are staggered.

[0011] In some embodiments, the flow guide plate is provided with a mounting hole, the heating body is a heating pipe, one end of the heating pipe is fixed to the cavity shell assembly, and the other end of the heating pipe is arranged in the mounting hole and connected to the flow guide plate.

[0012] In some embodiments, the flow guide plate is connected to the cavity wall of the heating cavity, and the plurality of flow guide plates are arranged in a spiral line around the central axis of the heating cavity.

[0013] In some embodiments, opposite surfaces of the flow guide plate in the thickness direction are arc surfaces.

[0014] In some embodiments, the heating body is a heating pipe; the heating pipe is connected to the cavity shell assembly and extends in the extension direction of the central axis of the heating cavity.

[0015] Among them, a plurality of flow guide plates are arranged around the outside of the heating pipe.

[0016] In some embodiments, a plurality of heating pipes are provided, and the plurality of heating pipes are arranged around the central axis of the heating cavity.

[0017] In some embodiments, the flow guide structure further comprises a spoiler protrusion, a plurality of spoiler protrusions are arranged on opposite surfaces of the flow guide plate in the thickness direction, and the spoiler protrusions are located in the flow guide channel.

[0018] In some embodiments, the spoiler protrusion comprises a first end and a second end arranged oppositely, the first end is located upstream of the liquid flow direction in the flow guide channel, and the second end is located downstream of the liquid flow direction in the flow guide channel.

[0019] The thickness dimension of the spoiler protrusion is arranged to increase in the direction from the first end to the second end.

[0020] In some embodiments, the width dimension of the spoiler protrusion is arranged to decrease in the direction from the first end to the second end.

[0021] In some embodiments, the spoiler protrusions on the plate surface of the deflector are arranged in columns and in rows, and the direction of the column arrangement is consistent with the extension direction of the flow guide channel.

[0022] In some embodiments, the central axes of the liquid inlet and the liquid outlet do not coincide.

[0023] In some embodiments, the cavity shell assembly comprises a tank body having an open end and an end cover, the end cover covers the open end and cooperates with the tank body to form the heating cavity.

[0024] The liquid inlet and the liquid outlet are arranged on the tank body, the exhaust port is arranged on the end cover, and the liquid inlet is arranged at one end of the tank body close to the end cover, and the liquid outlet is arranged at one end of the tank body away from the end cover.

[0025] In some embodiments, the flow guide structure is arranged at the periphery of the liquid inlet and / or the liquid outlet, and the flow guide structure is arranged obliquely relative to the central axis of the heating cavity.

[0026] In some embodiments, a heat conductor is further included, the heat conductor is connected to the outer wall surface of the cavity shell assembly, and the heating body is arranged on the heat conductor.

[0027] In a second aspect, the embodiments of the present application provide a water power module, which comprises the fluid heating device as described in any one of the above.

[0028] In a third aspect, the embodiments of the present application provide a heating and ventilation device, which comprises the water power module as described above.

[0029] Based on the fluid heating device of the embodiment of the present application, the flow guide structure is arranged in the heating cavity, which is used for disturbing the liquid flowing from the liquid inlet to the liquid outlet, forming turbulent flow in the heating cavity. The disturbance helps to separate the bubbles from the liquid and can destroy the micro-bubbles. After destroying and gathering the micro-bubbles to form large bubbles, the bubbles are easily separated out. The exhaust valve arranged at the exhaust port can separate at least part of the bubbles carried in the liquid and discharge the bubbles from the exhaust valve sufficiently and efficiently, improve the gas-liquid separation efficiency, and further improve the exhaust efficiency of the fluid heating device, reduce the risk of explosion caused by excessive bubble aggregation in the heating cavity. At the same time, the arrangement of the flow guide structure can improve the uniformity of the liquid flow and reduce the pressure drop, thereby improving the heat exchange efficiency and stability in the heating cavity. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to the structures shown in the drawings without creative labor.

[0031] Figure 1 It is a partial schematic diagram of the system principle of the heating and ventilation equipment of the present application.

[0032] Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of the fluid heating device of the present application.

[0033] Figure 3 It is an exploded structural schematic diagram of the fluid heating device shown in Figure 2

[0034] Figure 4 It is a sectional structural schematic diagram of an embodiment of the fluid heating device shown in Figure 2

[0035] Figure 5 It is a sectional structural schematic diagram of another embodiment of the fluid heating device shown in Figure 2

[0036] Figure 6 It is a structural schematic diagram of the flow guide plate shown in Figure 5

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] ​​​​100, fluid heating device; 110, cavity shell assembly; 111, heating cavity; 112, tank body; 1121, liquid inlet; 1122, liquid outlet; 1123, open mouth; 113, end cover; 1131, exhaust port; 120, heating body; 121, heating tube; 130, exhaust valve; 140, flow guide structure; 141, heat conduction plate; 1411, mounting hole; 1412, plate surface; 142, flow guide channel; 143, turbulence protrusion; 1431, first end; 1432, second end; 150, pipe assembly; 151, liquid inlet pipe; 152, liquid outlet pipe; 210, electric control box; 220, working medium pipe; 230, air cooler; 240, water pump.

[0039] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions and advantages of the present application clearer, the following will further describe the embodiments of the present application with reference to the accompanying drawings.

[0041] The following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] In the description of the present application, it should be understood that the terms "first", "second" and the like are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise stated, "multiple" means two or more. "And / or", the association between the associated objects, means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. The character " / " generally represents that the front and rear associated objects are a kind of "or" relationship.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0044] The present application proposes a fluid heating device, a hydraulic module using the fluid heating device, and a heating and ventilation equipment using the hydraulic module.

[0045] The heating and ventilation equipment includes but is not limited to air conditioners, multi-connected machines, heat pumps, water heaters, pool machines and the like. Taking the heating and ventilation equipment with heating medium as working medium and water as heating object as an example, the heating and ventilation equipment can include a water module for heating water and an outdoor unit which can be arranged outdoors and exchanges heat with the external environment.

[0046] Figure 1 For the partial schematic diagram of the system principle of the heating and ventilation equipment, please refer to Figure 1 The water module has a water circulation flow path and a working medium pipe 220 in which a working medium flows. The working medium can be R32, R290, CO2 and the like. These working media have the advantages of high thermal conductivity, large latent heat of evaporation, good fluidity and low delivery pressure. The water module exchanges heat between the working medium in the working medium pipe 220 and the water in the water circulation flow path, thereby heating the water to output water at a set temperature to provide the required hot water to the user end.

[0047] Specifically, the water module can further include an air cooler 230, a water pump 240, a fluid heating device 100 and the like. The air cooler 230, the fluid heating device 100 and the water pump 240 are connected by water pipes to form a water circulation flow path. The air cooler 230 has two inlets and two outlets. One set of mutually communicating inlets and outlets are for the working medium pipe 220 to pass through, and the other set of mutually communicating inlets and outlets are for the water medium to pass through. When the water medium flows through the air cooler 230, the working medium pipe 220 in the air cooler 230 is in contact with the water, and the working medium in the working medium pipe 220 is cooled to heat and warm the water in the air cooler 230. The water pump 240 provides the power for the water circulation flow. The fluid heating device 100 can be arranged between the air cooler 230 and the water pump 240, i.e. the water heated by the air cooler 230 is secondarily heated in the fluid heating device 100 and enters the water pump 240 through the water pipe, and then is pumped by the water pump 240 to the required environment, such as floor heating pipes or user's domestic water pipes, thereby realizing the user's hot water heating demand. The water module of the present application can also be provided with an energy storage water tank in the conventional water module when the fluid heating device 100 is provided. The energy storage water tank can be arranged between the air cooler 230 and the fluid heating device 100.

[0048] The outdoor unit can include an evaporator, a compressor, an expansion valve and the like, and the evaporator, the compressor, the air cooler 230 and the expansion valve are sequentially connected in circulation through the working medium pipe 220. When the heating and ventilation device is working, the working medium in the evaporator absorbs heat from the air, and the working medium changes from low-temperature and low-pressure gas to high-temperature and low-pressure gas; then the high-temperature gas is compressed by the compressor, so that the working medium forms high-temperature and high-pressure liquid; the high-temperature and high-pressure liquid exchanges heat with the water in the water circulation flow path through the air cooler 230, so that the temperature of the water in the water circulation flow path is increased, and the working medium becomes low-temperature and high-pressure liquid; the low-temperature and high-pressure liquid becomes low-temperature and low-pressure gas through the expansion valve, and then circulates to the evaporator again, so that the circulation process of the working medium is completed.

[0049] In addition, the water power module can also include a machine body (not marked in the figure) and an electric control box 210. The air cooler 230, the fluid heating device 100, the energy storage water tank, the water pipe and the like can be arranged in the machine body, and the machine body is placed indoors, so that the water circulation flow path has a certain cold resistance function, and the water in the water pipe has good flow effect. The electric control box 210 is also arranged in the machine body of the water power module, and the electric control box 210 is integrated with a power supply system and a control system for supplying power to and controlling the operation of each electrical element of the water power module, and at the same time, the lines, circuit boards and control elements in the electric control box 210 can be conveniently arranged and maintained. The machine body can also be provided with a control panel electrically connected with the electric control box 210, so as to facilitate the user to set parameters and control the working mode of the indoor unit by operating the control panel indoors.

[0050] In the related art, when the fluid heating device 100 is applied to the heating and ventilation device, since the fluid heating device 100 has a certain space volume and is provided with electric heating wires with high surface temperature, if the gaseous combustible refrigerant such as R290 leaks into the liquid and reaches the fluid heating device 100, it needs to be separated in time to ensure that there is no risk of combustion and explosion in the fluid heating device 100, and how to improve the exhaust efficiency of the fluid heating device 100 becomes a problem to be solved.

[0051] To solve the above problems, please refer to Figures 1 to 3 The fluid heating device 100 is provided in the embodiment of the present application, which includes a cavity shell assembly 110, a heating body 120, an exhaust valve 130 and a flow guide structure 140.

[0052] The cavity shell assembly 110 is formed with a heating cavity 111, and is spaced apart with a liquid inlet 1121, a liquid outlet 1122 and an exhaust port 1131, which are all communicated with the heating cavity 111. The heating body 120 is connected with the cavity shell assembly 110, and is used for heating the liquid flowing through the heating cavity 111. Specifically, the cavity shell assembly 110 comprises a tank body 112 with an open end 1123 and an end cover 113. The end cover 113 covers the open end 1123 and cooperates with the tank body 112 to form the heating cavity 111. The liquid inlet 1121 and the liquid outlet 1122 are arranged on the tank body 112, and the exhaust port 1131 is arranged on the end cover 113. The external structure of the cavity shell assembly 110 can be approximately cylindrical, curved pipe-shaped or square, and the specific structure size can be further limited according to the actual installation requirements, which is not limited in the present application.

[0053] The external structure of the cavity shell assembly 110 of the present application is cylindrical, and the outer wall surface of the cavity shell assembly 110 is arc-shaped, which is beneficial to save installation space and can withstand greater pressure. When the fluid heating device 100 is placed in the installation space, the central axis of the heating cavity 111 is perpendicular to the horizontal ground. At this time, the direction of the central axis of the heating cavity 111 is parallel to the up-down direction of the fluid heating device 100. The liquid outlet 1122 is arranged at one end of the tank body 112 close to the end cover 113, and the liquid inlet 1121 is arranged at one end of the tank body 112 away from the end cover 113, i.e. the liquid inlet 1121 and the liquid outlet 1122 are arranged in the up-down direction of the fluid heating device 100. In this way, the liquid inlet 1121 and the liquid outlet 1122 are arranged in the up-down direction of the fluid heating device 100. Thus, the gas entering the heating cavity 111 with the liquid from the liquid inlet 1121 can rise one step faster and accumulate in the upper space of the heating cavity 111. For example, the liquid can be water, and the gas can be gaseous refrigerant in the system. Thus, the gas bubbles can be easily discharged from the exhaust port 1131, the exhaust efficiency is improved, and the risk of accumulation of flammable gaseous refrigerant in the heating cavity 111 causing explosion is reduced. At the same time, the liquid can flow from the liquid inlet 1121 located above to the liquid outlet 1122 located below under the action of gravity, and then flow out from the liquid outlet 1122, which greatly improves the liquid outlet efficiency of the fluid heating device 100.

[0054] Of course, the liquid outlet 1122 can also be arranged at one end of the tank body 112 close to the end cover 113, and the liquid inlet 1121 is arranged at the other end away from the end cover 113, so as to realize the downward inlet and upward outlet of the liquid. The cold water flows into the heating cavity 111 from the liquid inlet 1121 at the lower end, is heated in the heating cavity 111, and then naturally rises and flows out to the outside from the liquid outlet 1122 at the upper end due to the lower density of the hot water, so as to form a natural convection circulation, reduce the mixing of hot water and cold water, reduce the heat exchange difference, and improve the heating efficiency. After the natural rising of the hot water, the upper part of the heating cavity 111 stores the heated water, so as to reduce the heat loss from the heating cavity 111 and improve the heat preservation effect.

[0055] The exhaust valve 130 is connected with the cavity shell assembly 110 and arranged at the exhaust port 1131. The exhaust valve 130 is provided with a rectangular metal mesh structure and an exhaust chamber. The metal mesh structure is used to block the water flow to cause a turbulent flow. The turbulent flow state changes the speed and pressure of the water flow and releases bubbles. The bubbles are accumulated at the top end of the metal mesh due to the molecular force. The bubbles accumulated at the top end of the metal mesh are separated from the metal mesh and rise to the exhaust chamber of the exhaust valve 130 due to the increase in volume. The exhaust chamber further discharges the air by being provided with the automatic exhaust valve 130 float ball. In this way, the micro-bubble gas mixed in the liquid can be discharged outside the fluid heating device 100, so as to reduce the risk of air blockage and cavitation.

[0056] The exhaust valve 130 is arranged at the exhaust port 1131. In the process of heating the liquid in the heating cavity 111 by the heating body 120, the water vapor in the bubbles continuously evaporates, the volume of the bubbles expands, and the buoyancy of the bubbles increases, so that the bubbles rise to the exhaust port 1131. This is beneficial to the exhaust valve 130 to discharge the micro-bubbles floating in the water, and improves the exhaust efficiency. In this way, it can be ensured that there is no gas accumulation in the fluid heating device 100, so as to reduce the possibility of air blockage and cavitation, improve the exhaust efficiency and overall stability of the fluid heating device 100, and further help to maintain the normal operation of the heating and ventilation equipment and prolong the service life. In addition, the design of the exhaust valve 130 is not affected by the direction of the water flow. Therefore, the exhaust port 1131 can also be arranged on the side wall of the cavity shell assembly 110. The exhaust valve 130 is connected with the side wall of the cavity shell assembly 110 and arranged at the exhaust port 1131. In this way, adaptive adjustment can be made in specific installation environment, and the installation flexibility is improved.

[0057] The technical scheme of the present application sets the flow guide structure 140 in the heating cavity 111 to disturb the liquid flowing from the liquid inlet 1121 to the liquid outlet 1122, form turbulent flow in the heating cavity 111, which helps to separate the gas bubbles from the liquid and destroy the micro gas bubbles, and then the multiple micro gas bubbles are destroyed and gathered to form large bubbles, which are easy to be separated out, and the exhaust valve 130 arranged at the exhaust port 1131 can separate at least part of the gas bubbles carried in the liquid and discharge them from the exhaust valve 130 sufficiently and efficiently, improve the gas-liquid separation efficiency, and then improve the exhaust efficiency of the fluid heating device 100, reduce the risk of accumulation of flammable gaseous refrigerant in the heating cavity 111 causing combustion and explosion, and at the same time, the arrangement of the flow guide structure 140 can also improve the uniformity of the liquid flow and reduce the pressure drop, thereby improving the heat exchange efficiency and stability in the heating cavity 111.

[0058] Please refer to Figures 2 to 4 In some embodiments, the fluid heating device 100 further comprises a pipe assembly 150, which comprises a liquid inlet pipe 151 and a liquid outlet pipe 152, both of which are fixedly connected with the cavity shell assembly 110, the liquid inlet pipe 151 communicates with the heating cavity 111 through the liquid inlet 1121, and the liquid outlet pipe 152 communicates with the heating cavity 111 through the liquid outlet 1122. The pipe assembly 150 is made of a material with excellent heat conductivity, such as stainless steel, aluminum alloy, etc., so that the pipe assembly 150 can efficiently absorb the heat generated by the heating body 120, and the pipe assembly 150 can also be produced by casting. Of course, the pipe assembly 150 can also be made of other materials with high structural strength and high temperature resistance, which is not limited in the present application. The cross-sectional shape of the pipe assembly 150 can be circular, square, polygonal, etc., and in the exemplary embodiment shown in the figure, the cross-section of the pipe assembly 150 is circular, and the length dimension is greater than the radial dimension. Figure 4

[0059] ​In some embodiments, the flow guide structure 140 includes a plurality of flow guide plates arranged at intervals in the liquid flow direction from the liquid inlet 1121 to the liquid outlet 1122 within the heating cavity 111, and the plurality of flow guide plates and the cavity wall of the heating cavity 111 cooperatively define a flow guide channel 142 for guiding the liquid from the liquid inlet 1121 to the liquid outlet 1122, wherein the flow guide channel 142 extends in a spiral shape. In this way, the liquid flows in a rotating manner in the spiral extension direction of the flow guide channel 142 within the flow guide channel 142, and a vortex is generated within the heating cavity 111, which can change the flow characteristics of the fluid, making the fluid flow more uniform, reducing dead angles and flow stratification, thereby helping to improve the heat exchange performance of the entire heating cavity 111. The bubbles doped in the liquid are more easily broken due to the constant disturbance of the vortex, and the surface tension of the bubbles is more easily destroyed, and then a plurality of small bubbles can merge to form larger bubbles, which are more easily discharged after rising to the exhaust port 1131, thereby improving the exhaust efficiency.

[0060] In addition, in the limited volume of the heating cavity 111, the flow guide channel 142 extending in a spiral shape can also greatly increase the flow length of the liquid. Compared with the design of a linear flow guide channel 142, the spiral extension of the flow guide channel 142 causes the liquid to change direction continuously while flowing. This continuous change of direction increases the contact area of the liquid with the flow guide channel 142, which is conducive to the destruction of the bubbles in the liquid by the flow guide channel 142 multiple times, thereby improving the generation efficiency of large bubbles and improving the exhaust efficiency. The secondary flow generated by the spiral flow guide channel 142 can flow perpendicular to the axial direction, which helps to reduce the boundary layer thickness of the fluid flow and enhance the heat transfer characteristics, thereby increasing the heat exchange efficiency of the fluid heating device 100.

[0061] In addition, the central axes of the liquid inlet 1121 and the liquid outlet 1122 can be arranged not to coincide, that is, the projections of the central axes of the liquid inlet 1121 and the liquid outlet 1122 in the direction of the central axis of the heating cavity 111 and in the direction perpendicular to the central axis of the heating cavity 111 do not coincide. In this way, the liquid flow direction and velocity distribution of the liquid can be changed during the process of flowing out of the liquid outlet 1122 after entering the heating cavity 111 from the liquid inlet 1121. Compared with the arrangement in which the central axes of the liquid inlet 1121 and the liquid outlet 1122 are parallel to each other, the flow length of the liquid in the flow direction can also be increased, thereby affecting the flow state of the liquid, causing the liquid to change from laminar flow to turbulent flow, and also achieving the disturbance and destruction of the mixed bubbles in the liquid, facilitating the outgassing of the bubbles and improving the exhaust efficiency. It can also increase the mixing and heat exchange efficiency of hot and cold liquids.

[0062] It should be noted that the number of guide plates can be multiple or one-piece structure, when the guide plate is provided with multiple, different vortex effects can be achieved by changing the setting position and angle of a single guide plate, and the one-piece structure of the guide plate is also convenient to install, which avoids the installation error caused by multiple guide plates in the actual installation process.

[0063] In one structure, as shown in Figure 3 and Figure 4 The guide plate is connected with the cavity wall surface of the heating cavity 111, the opposite plate surface 1412 of the guide plate in the thickness direction is a plane, and the plate surface 1412 of the guide plate is perpendicular to the central axis of the heating cavity 111. At this time, during the process of the liquid flowing out of the liquid outlet 1122 after entering the heating cavity 111 from the liquid inlet 1121, the liquid will impact on the plate surface 1412 of the guide plate. The guide plate will change the flow direction of the liquid by blocking the liquid, so that the flow direction of the liquid is in the form of zigzag extension, which can also achieve the effect of vortex, so that the flow direction of the liquid is constantly changed during the flow process, and the gas bubbles mixed in the liquid are impacted and broken during the continuous flow process, so that the gas bubbles can be better separated and finally discharged by the exhaust valve 130, improving the exhaust efficiency. And because the opposite plate surface 1412 of the guide plate in the thickness direction is a plane, the fluid flow can be more effectively guided, ensuring that the liquid will not change the speed due to the shape of the plate surface 1412 when flowing through the plate surface 1412 of the guide plate, ensuring the smoothness of the flow and preventing turbulence, thereby optimizing the flow field distribution.

[0064] Specifically, the orthographic projection of the two adjacent guide plates along the extension direction of the central axis of the heating cavity 111 is partially overlapped. Therefore, in the liquid flow direction from the liquid inlet 1121 to the liquid outlet 1122 in the heating cavity 111, the orthographic projection of the two adjacent guide plates can block part of the liquid, and another part of the liquid will also be blocked by the overlapping part of the other two adjacent guide plates after flowing along the central axis direction. The flow direction of the liquid relative to the central axis of the heating cavity 111 is constantly changed, the flow length is increased, and the liquid forms a vortex along the central axis of the heating cavity 111. After the vortex is formed, the gas bubbles are impacted on the plate surface 1412 of the guide plate due to the blocking of the guide plate, which is more easily broken and finally separated into large bubbles, which is more convenient for the exhaust valve 130 to discharge, thereby improving the exhaust efficiency.

[0065] It should be noted that the area of the overlapping part of the orthographic projection of the two adjacent guide plates along the extension direction of the central axis of the heating cavity 111 can be one-half, one-fourth, or one-eighth of the area of the plate surface 1412 of the guide plate, etc. In the embodiment of the present application, the area of the overlapping part of the orthographic projection of the two adjacent guide plates is one-fourth of the area of the plate surface 1412. In this way, the guide plate can block the liquid in the central axis direction of the heating cavity 111, avoid the liquid from directly flowing through the gap between the two adjacent guide plates and affecting the vortex effect, ensure the exhaust efficiency, and the number of guide plates arranged in this way can be less, thereby saving costs.

[0066] Alternatively, the orthographic projection of the two adjacent guide plates along the extension direction of the central axis of the heating cavity 111 is staggered. In this way, the liquid can also be blocked in the liquid flow direction from the liquid inlet 1121 to the liquid outlet 1122 to change the flow direction of the liquid, so that the liquid flows tortuously, forms a spiral-like flow direction along the central axis direction of the heating cavity 111, ensures the flow length and the contact efficiency of the bubbles and the guide plates, and thereby ensures the exhaust efficiency.

[0067] The heating body 120 can be a heating pipe 121 or a heating film, or the heating body 120 is a pipe structure, and a heating medium (for example, water, refrigerant, etc.) flows in the inside. In an embodiment of the present application, the heating body 120 is a heating pipe 121. The heating pipe 121 usually takes a metal pipe (including stainless steel and red copper pipe) as a shell, uniformly arranges a spiral electric heating alloy wire (nickel-chromium, iron-chromium alloy) along the central axis of the pipe, fills the gap with compacted magnesium oxide sand having good insulation and heat conduction performance, and seals the pipe opening with silica gel.

[0068] The guide plate is provided with a mounting hole 1411, the heating pipe 121 is connected with the cavity shell assembly 110, one end is fixed to the cavity shell assembly 110, and the other end is arranged in the mounting hole 1411 and connected with the guide plate, so that the heating pipe 121 can be stably fixed in the cavity shell assembly 110, and the part of the heating pipe 121 located in the heating cavity 111 is arranged in the mounting hole 1411 and connected with the guide plate, so that the heating pipe 121 and the guide plate are fixed and tightly connected, the heating pipe 121 will not shake or shift due to the flow and impact of the liquid, and the heating pipe 121 will not shift and separate during transportation and installation, thereby ensuring the stability and safety of use, thereby ensuring the stability and durability of the fluid heating device 100. And the connection of the heating pipe 121 and the guide plate can improve the heat conduction efficiency. The guide plate is connected with the heating pipe 121 through the mounting hole 1411, which can more effectively transfer heat from the heating pipe 121 to the liquid, and the guide plate directly contacts the heating pipe 121, reducing heat loss and improving heating efficiency. The liquid is guided to flow along a specific path through the guide plate, which can reduce the disorder and turbulence of the liquid, improve the efficiency of liquid flow, and uniform flow can ensure that each part of the liquid is uniformly heated during heating, thereby improving the heat exchange efficiency.

[0069] In another structure, as shown in Figure 5 and Figure 6 The guide plate is connected with the cavity wall of the heating cavity 111, that is, the guide plate can be an integral structure with the cavity wall of the heating cavity 111, or can be fixed on the cavity wall of the heating cavity 111 by welding, screwing or the like. Of course, the guide plate can be connected and fixed with one end of the heating body 120, and the other end abuts against the cavity wall of the heating cavity 111, which is not limited by the present application. A plurality of guide plates are arranged along the spiral line around the central axis of the heating cavity 111, and the spiral line arrangement increases the turbulence of the liquid flow, so that the flow direction of the liquid is consistent with the direction of the spiral line around the central axis of the heating cavity 111. Irregular low-efficiency turbulent fluid in the heating cavity 111 is converted into regular vortex fluid, thereby forming a layered vortex flow state, so that the liquid phase and the gas phase move in a vortex state at the same time, and in the flow process, the contact area between the bubbles and the guide plate is increased, which is helpful for the uniform distribution and movement of the bubbles in the entire flow channel, so that the bubbles are continuously contacted and broken by the guide plate, and gradually gathered into large bubbles from multiple small bubbles, which reduces the aggregation of bubbles in the local area, is beneficial to the exclusion of bubbles, thereby greatly improving the gas-liquid separation efficiency and exhaust efficiency.

[0070] In addition, the opposite plate surface 1412 of the deflector in the thickness direction is an arc surface. The arc surface deflector can more effectively guide the liquid in the flow direction of the liquid, and help the liquid to be carried when flowing. The arc surface design can reduce the contact area between the bubble and the surface of the deflector, reduce the adhesion of the bubble, make the bubble more easily separate from the surface of the deflector, and increase the gas-liquid contact area of the arc surface deflector. The mass transfer efficiency between the gas and the liquid is improved, which helps to break the small bubbles and form larger bubbles, so that the bubbles are more easily discharged from the water, thereby improving the exhaust efficiency.

[0071] The heating pipe 121 is provided in a plurality of forms, and the plurality of heating pipes 121 are arranged around the central axis of the heating cavity 111. Specifically, the plurality of heating pipes 121 are arranged at intervals around the central axis of the heating cavity 111, that is, the plurality of heating pipes 121 are connected in parallel in an electrical circuit. Such an arrangement facilitates the individual control of each of the plurality of heating pipes 121, so that part or all of the heating pipes 121 can be controlled to start operation according to the use requirements. In the case of meeting the power requirements, the energy utilization rate can also be improved. In the case of parallel connection of the plurality of heating pipes 121, when one of the heating pipes 121 is abnormal, the other heating pipes 121 can also operate to ensure the continuous working output of the heating equipment, and the reliability is high. Of course, in the case of parallel connection of the plurality of heating pipes 121, the operation space for assembling the heating pipe 121 is larger, and the assembly is easier.

[0072] In other forms of arrangement, the heating pipe 121 extends in the central axis extension direction of the heating cavity 111, and the plurality of heating pipes 121 are arranged in a head-to-tail splicing manner. That is, the plurality of heating pipes 121 of the present application are connected in series in an electrical circuit after splicing. By such an arrangement, on the one hand, the plurality of heating pipes 121 realize a larger area coverage of the central axis of the heating cavity 111 in the flow path of the liquid, so that sufficient heating can be performed. In the case of series connection of the plurality of heating pipes 121, the power connection is relatively simple.

[0073] The plurality of heating pipes 121 are arranged around the central axis of the heating cavity 111, and the plurality of deflectors are arranged around the outer side of the heating pipe 121. The deflector can guide the liquid to flow uniformly around the heating pipe 121 in the flow direction, which can reduce the aggregation of bubbles in the local area and cause more resistance to the liquid in its flow direction, which helps to break the bubbles to be quickly discharged, thereby improving the exhaust efficiency. In addition, the deflector arranged around the outer side of the heating pipe 121 can fully guide the liquid vortex to the heating pipe 121, increase the surface area of the liquid in contact with the heating pipe 121, thereby improving the heat exchange efficiency, and also reducing the aggregation of bubbles caused by temperature difference.

[0074] In yet another arrangement, the heating pipes 121 are arranged in a spiral structure and surround the central axis of the heating cavity 111, and a plurality of heating pipes 121 are arranged in sequence along the extension path of the liquid, and at least partially nested arrangement of adjacent two heating pipes 121. In this embodiment, a plurality of heating pipes 121 are arranged at intervals around the central axis of the heating cavity 111 and extend in the direction of the central axis of the heating cavity 111, and the plurality of heating pipes 121 in this embodiment can be electrically connected in series or in parallel, thereby achieving more complete coverage of the central axis of the heating cavity 111 on the liquid flow path, thereby heating more fully, and can also form a certain resistance to the liquid in the liquid flow direction from the liquid inlet 1121 to the liquid outlet 1122, thereby enhancing the breaking effect of the bubbles, thereby improving the exhaust efficiency, and in the case of parallel arrangement of the plurality of heating pipes 121, the control is more flexible.

[0075] In some embodiments, the flow guide structure 140 further comprises a spoiler protrusion 143, and the flow guide plate is provided with a plurality of spoiler protrusions 143 on the opposite plate surfaces 1412 in the thickness direction, and the spoiler protrusions 143 are located in the flow guide channel 142 and can disturb the liquid during the liquid flowing through the flow guide channel 142, thereby interfering with the micro-bubbles doped in the liquid, destroying the surface tension of the bubbles, and fusing a plurality of micro-bubbles to form larger bubbles, thereby facilitating the bubbles to rise and gather at the upper part of the heating cavity 111, and then being discharged through the exhaust valve 130, thereby improving the exhaust efficiency.

[0076] The spoiler protrusion 143 can also effectively disturb the fluid in the flow guide channel 142 and avoid stratification. It can be understood that when the stratification of the liquid in the flow guide channel 142 is more obvious, for example, the liquid near the wall surface of the flow guide channel 142 is subjected to frictional resistance, and the flow rate is smaller than that of the liquid located in the middle of the flow guide channel 142. In this way, the heat of the heating body 120 is difficult to transfer to the liquid located in the middle of the flow guide channel 142, resulting in uneven heating. By arranging the spoiler protrusion 143, a turbulent flow phenomenon can be formed to reduce stratification as much as possible, so that the heating is more uniform.

[0077] It should be noted that when the plate surface 1412 of the guide plate is perpendicular to the central axis of the heating cavity 111, the spoiler protrusion 143 can be arranged on at least one side of the plate surface 1412 of the guide plate facing the liquid inlet 1121; when a plurality of guide plates are arranged along the spiral line around the central axis of the heating cavity 111, the spoiler protrusion 143 can also be arranged on at least one side of the plate surface 1412 of the guide plate facing the liquid inlet 1121, so that the liquid can be disturbed first upstream of the liquid flow direction in the guide channel 142, and the liquid can be directly impacted on the spoiler protrusion 143, and the spoiler protrusion 143 can break the surface tension of the micro-bubbles mixed in the liquid, break and aggregate the micro-bubbles into larger bubbles, and then flow downstream of the liquid flow direction, and the spoiler protrusion 143 arranged downstream can further damage the larger bubbles to form larger bubbles, facilitate the bubbles to be precipitated and discharged by the exhaust valve 130, and thus improve the exhaust efficiency.

[0078] Specifically, the spoiler protrusion 143 includes oppositely arranged first and second ends 1431 and 1432, the first end 1431 is located upstream of the liquid flow direction in the guide channel 142, and the second end 1432 is located downstream of the liquid flow direction in the guide channel 142, the thickness dimension L1 of the spoiler protrusion 143 increases in the direction from the first end 1431 to the second end 1432, and the width dimension L2 of the spoiler protrusion 143 decreases in the direction from the first end 1431 to the second end 1432. It should be noted that the thickness dimension L1 of the spoiler protrusion 143 refers to the direction perpendicular to the plate surface 1412 of the guide plate on the plate surface 1412 of the guide plate on which the spoiler protrusion 143 is formed, which is the thickness direction of the spoiler protrusion 143; the width dimension L2 of the spoiler protrusion 143 refers to the direction parallel to the plate surface 1412 of the guide plate and perpendicular to the liquid flow direction in the guide channel 142 on the plate surface 1412 of the guide plate on which the spoiler protrusion 143 is formed, which is the width direction of the spoiler protrusion 143.

[0079] In this way, when the liquid is in the flow channel 142 and flows through the spoiler convex part 143, the flow rate of the liquid changes due to the gradually increasing thickness and the gradually decreasing thickness, and gradually increases in the process. When the liquid flows through the second end 1432 of the spoiler convex part 143, the second end 1432 is relatively thick and narrow, and the flow rate of the liquid is greater than that of the upstream liquid at this time. The surface tension of the micro-bubbles in the liquid is destroyed, and the micro-bubbles are broken. Due to the arrangement of the plurality of spoiler convex parts 143 on the plate surface 1412 of the flow guide plate in rows and in lines, and the direction of the arrangement in the rows being consistent with the extension direction of the flow channel 142, the flow direction of the liquid is arranged to conform to the flow direction of the liquid, the flow resistance of the liquid is reduced, and the plurality of micro-bubbles broken at the adjacent spoiler convex parts 143 can gather and form larger bubbles. The larger bubbles are broken again and recombined into larger bubbles in the flow process, and finally rise to the exhaust port 1131 and are exhausted by the exhaust valve 130. In this way, the resistance of the spoiler convex part 143 to the flow of the liquid is greatly reduced, and the exhaust efficiency is greatly improved.

[0080] It can be understood that the structure of the spoiler convex part 143 can be a convex hull, a boss, or a conical structure, etc. in addition to the above-mentioned forms. For example, the spoiler convex part 143 can be a plurality of spoiler ribs. The spoiler ribs are located in the flow channel 142, and the extension direction of the spoiler ribs is the same as the flow direction of the liquid. The spoiler ribs can also disturb the liquid during the flow of the liquid through the flow channel 142, thereby facilitating the outgassing of the bubbles and improving the exhaust efficiency. The present application does not limit this.

[0081] In some embodiments, the flow guide structure 140 is arranged at the periphery of the liquid inlet 1121 and the liquid outlet 1122, or at the periphery of one of the liquid inlet or the liquid outlet 1122, and the flow guide structure 140 is arranged obliquely relative to the central axis of the heating cavity 111. In this way, when the liquid enters the heating cavity 111 from the liquid inlet 1121, and the liquid is discharged from the liquid outlet 1122, the flow channel of the liquid is not parallel to the central axis of the heating cavity 111, and the flow length of the liquid is also increased to sufficiently outgas the bubbles. At this time, the flow guide structure 140 can be a plate structure or a spiral structure. For example, the flow guide structure 140 is a spiral structure that spirals along the central axis of the heating cavity 111 and is arranged at the periphery of the liquid inlet 1121. When the liquid enters the heating cavity 111 from the liquid inlet 1121, the flow direction of the liquid is changed to a spiral flow direction that rotates along the spiral line of the central axis of the heating cavity 111 by the spiral structure. In this way, the vortex flow of the liquid is formed, and the above-mentioned exhaust effect is achieved.

[0082] Please refer again to Figures 2 to 4In some embodiments, a heat-conducting body is further included, which is connected to the outer wall surface of the cavity shell assembly 110, and the heating body 120 is arranged on the heat-conducting body. The heat-conducting body can be made of a heat-conducting metal material such as aluminum or stainless steel, or can also be made of a non-metal material. The heat-conducting body is formed on the outer surface of the cavity shell assembly 110 in a die casting or pouring manner, which facilitates production and manufacturing and improves the structural integrity.

[0083] By arranging the heating body 120 on the heat-conducting body outside the cavity shell assembly 110, the heat generated by the heating body 120 is conducted to the cavity shell assembly 110 through the heat-conducting body, thereby heating the liquid in the heating cavity 111. Since the heating body 120 is not in direct contact with the liquid, the heating body 120 is not easily corroded by the liquid during heating. In addition, since the heating body 120 is not in direct contact with the liquid, it is not easily affected by sudden changes in temperature, which can effectively buffer the heating body 120 and prevent it from deforming.

[0084] In addition, by arranging the heat-conducting body and the heating body 120 outside the cavity shell assembly 110, the sealing structure corresponding to the power connection end of the heating body 120 on the cavity shell assembly 110 is omitted, which can also reduce the assembly difficulty of the entire fluid heating device 100 and prevent the outlet of the power connection end from leaking due to corrosion after long-term use. Therefore, the reliability of the entire fluid heating device 100 is higher. Of course, when the heat-conducting body and the heating body 120 are arranged outside the cavity shell assembly 110, the structural strength of the cavity shell assembly 110 is also improved, which makes the overall structural strength higher.

[0085] In order to further improve safety, when the heat-conducting body is connected to the outer wall surface of the cavity shell assembly 110 and the heating body 120 is arranged on the heat-conducting body, the fluid heating device 100 further includes a protective cover, which is arranged outside the cavity shell assembly 110 and the heat-conducting body and cooperates with the cavity shell assembly 110 to form a protective cavity, and the heat-conducting body is located in the protective cavity. The protective cover can be made of a fireproof material. When abnormal dry burning or excessively high temperature occurs, the fluid heating device 100 will not affect other components in the hydraulic module.

[0086] In order to improve the assembly convenience, the protective cover includes a cover box and a cover lid, which are detachably connected together. The cover box and the cover lid can be detachably connected by buckles, screws, or the like.

[0087] Further, the present application can also be covered with a heat preservation layer on the outer wall surface and the inner wall surface of the protective cover, or one of the outer wall surface or the inner wall surface, that is, the present application can be covered with a heat preservation layer only on the outer wall surface of the protective cover, or be provided with a heat preservation layer only on the inner wall surface of the protective cover, or be covered with a heat preservation layer on both the inner wall surface and the outer wall surface of the protective cover, wherein the material of the heat preservation layer can be selected from sponge, foam and the like, by such setting, the protective cover can not only realize the protection function, but also reduce the energy loss, and can also reduce the heat radiation of the fluid heating device 100 during operation, and affect other parts.

[0088] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, 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 particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present application, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0089] The above is only the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fluid heating apparatus, characterized by, The fluid heating device comprises: a cavity shell assembly, which is internally formed with a heating cavity and is provided with a liquid inlet, a liquid outlet and an exhaust port in a spaced manner, wherein the liquid inlet, the liquid outlet and the exhaust port are communicated with the heating cavity; a heating body, which is connected with the cavity shell assembly and is used for heating the liquid flowing through the heating cavity; an exhaust valve, which is connected with the cavity shell assembly and is arranged at the exhaust port; and a flow guide structure, which is arranged in the heating cavity and is used for disturbing the liquid flowing from the liquid inlet to the liquid outlet so as to separate at least part of the air bubbles carried in the liquid and discharge the air bubbles by the exhaust valve. The flow guide structure comprises a plurality of flow guide plates, which are arranged in a spaced manner along the liquid flowing direction from the liquid inlet to the liquid outlet in the heating cavity, and the flow guide plates and the cavity wall of the heating cavity cooperatively define a flow guide channel, which is used for guiding the liquid from the liquid inlet to the liquid outlet, wherein the flow guide channel extends in a spiral manner.

2. The fluid heating apparatus of claim 1, wherein, The flow guide plates are connected with the cavity wall surface of the heating cavity, the opposite plate surfaces of the flow guide plates in the thickness direction are planes, and the plate surfaces of the flow guide plates are perpendicular to the central axis of the heating cavity.

3. The fluid heating apparatus of claim 2, wherein, The normal projections of the adjacent two flow guide plates along the extension direction of the central axis of the heating cavity are partially overlapped.

4. The fluid heating apparatus of claim 3, wherein, Alternatively, the normal projections of the adjacent two flow guide plates along the extension direction of the central axis of the heating cavity are arranged in a staggered manner. The flow guide plates are provided with mounting holes, the heating body is a heating pipe, one end of the heating pipe is fixed to the cavity shell assembly, and the other end of the heating pipe is arranged in the mounting hole and connected with the flow guide plate.

5. The fluid heating apparatus of claim 3, wherein, The flow guide plates are connected with the cavity wall of the heating cavity, and the plurality of flow guide plates are arranged in a spaced manner along the spiral line surrounding the central axis of the heating cavity.

6. The fluid heating apparatus of claim 2, wherein, The opposite plate surfaces of the flow guide plates in the thickness direction are arc surfaces.

7. The fluid heating apparatus of claim 6, wherein, The heating body is a heating pipe, the heating pipe is connected with the cavity shell assembly and extends along the extension direction of the central axis of the heating cavity.

8. The fluid heating apparatus of claim 6, wherein, The plurality of flow guide plates surround the outside of the heating pipe. The plurality of heating pipes surround the central axis of the heating cavity.

9. The fluid heating apparatus of claim 8, wherein, The flow guide structure further comprises a turbulence protrusion, the flow guide plates are provided with a plurality of turbulence protrusions in a spaced manner on the opposite plate surfaces in the thickness direction, and the turbulence protrusions are located in the flow guide channel.

10. A fluid heating apparatus as claimed in any one of claims 2 to 9, wherein, The turbulence protrusion comprises oppositely arranged first and second ends, the first end is located upstream of the liquid flowing direction in the flow guide channel, and the second end is located downstream of the liquid flowing direction in the flow guide channel.

11. The fluid heating apparatus of claim 10, wherein, The thickness dimension of the turbulence protrusion increases in the direction from the first end to the second end. The width dimension of the turbulence protrusion decreases in the direction from the first end to the second end.

12. The fluid heating apparatus of claim 11, wherein, The plurality of turbulence protrusions on the plate surfaces of the flow guide plates are arranged in columns and rows, and the direction of the column arrangement is consistent with the extension direction of the flow guide channel.

13. The fluid heating apparatus of claim 12, wherein, 14. The fluid heating device according to any one of claims 1 to 13, wherein the central axes of the liquid inlet and the liquid outlet do not coincide. ​ 15. The fluid heating apparatus of claim 14, wherein, The cavity shell assembly comprises a can body with an open end and an end cover, the end cover covers the open end and cooperates with the can body to form the heating cavity; The liquid inlet and the liquid outlet are arranged on the can body, the exhaust port is arranged on the end cover, the liquid inlet is arranged on one end of the can body close to the end cover, and the liquid outlet is arranged on one end of the can body away from the end cover.

16. The fluid heating apparatus of any one of claims 1 to 13, wherein, The flow guide structure is arranged at the periphery of the liquid inlet and / or the liquid outlet, and the flow guide structure is arranged obliquely relative to the central axis of the heating cavity.

17. The fluid heating apparatus of any one of claims 1 to 13, wherein, A heat conductor is further included, the heat conductor is connected to the outer wall surface of the cavity shell assembly, and the heating body is arranged on the heat conductor.

18. A hydraulic module, characterized by The fluid heating device comprises the water power module.

19. A heating and ventilation device, characterized in that The water power module comprises the fluid heating device.

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