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 box body, a heat conduction plate, a heating body and a pipe assembly; a heating cavity is formed in the box body; the heat conducting plate is fixedly connected with the box body and located outside the heating cavity, and the heat conducting plate comprises a mounting surface back on to the box body; the heating body is fixedly connected with the heat conducting plate and located on the mounting surface, and the heating body is used for heating fluid in the heating cavity; the pipe assembly comprises a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are both fixedly connected with the box body and communicate with the heating cavity. According to the technical scheme, the stability of long-time operation of the electric heating water tank in the heat pump system can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of HVAC systems, and in particular to a fluid heating device, a hydraulic module and HVAC equipment. Background Art

[0002] When traditional air source heat pump water heaters are used for heating in cold areas in winter, the low temperature heating efficiency of air source heat pump water heaters is affected due to the low temperature, and they cannot meet people's needs, thus limiting the popularization and application of such equipment in the area. It is not economically feasible to solve this problem with higher power equipment.

[0003] Of course, there is also a solution of connecting a small electric heating water tank in the water circuit. This solution is less affected by the ambient temperature and has high thermal efficiency in very cold conditions. In the related art, for example, patent CN206648152U discloses an electric heating tank, including a tube body and a heater. The tube body has a first end and a second end along a first direction. The tube body is provided with a water inlet and a water outlet. The tube body, the water inlet and the water outlet form a closed water system. The heater is arranged in the tube body and connected to the water system. The first end is provided with a power terminal, and the heater is fixedly connected to the power terminal. The electric heating tube of this electric heating tank is directly inserted into the water. The heating tube is often corroded by water and subjected to hot and cold shocks, which can easily cause the heating tube to crack, leading to leakage problems and affecting the user's safety. Utility Model Content

[0004] The embodiments of the present application provide a fluid heating device, a hydraulic module and HVAC equipment, which can effectively improve the long-term operation stability of the electric heating water tank in the heat pump system.

[0005] In the first aspect, an embodiment of the present application provides a fluid heating device, which includes a box body, a heat conduction plate, a heating body and a pipe assembly; the box body forms a heating chamber; the heat conduction plate is fixedly connected to the box body and is located outside the heating chamber, and the heat conduction plate includes a mounting surface facing away from the box body; the heating body is fixedly connected to the heat conduction plate and is located on the mounting surface, and the heating body is used to heat the fluid in the heating chamber; the pipe assembly includes a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are both fixedly connected to the box body and communicated with the heating chamber.

[0006] In some of the embodiments, a portion of the water inlet pipe extends into the heating chamber and has an inlet pipe outlet, and the inlet pipe outlet is arranged adjacent to the heat conducting plate.

[0007] In some embodiments, the inlet and outlet are oriented perpendicular to the surface of the heat conducting plate.

[0008] In some embodiments, the box body includes a box shell and a box cover, the box cover is connected to the box shell and encloses the heating chamber, the heat conduction plate is fixed to the outside of the box shell and is arranged opposite to the box cover in the depth direction of the heating chamber, and the water inlet pipe and the water outlet pipe are fixed on the box cover; wherein the length of the water outlet pipe extending into the heating chamber is shorter than the length of the water inlet pipe extending into the heating chamber.

[0009] In some embodiments, the box body includes a box shell and a box cover, the box cover is connected to the box shell and encloses the heating chamber, the heat conduction plate is fixed to the outside of the box shell and is arranged opposite to the box cover in the depth direction of the heating chamber; wherein the water inlet pipe is fixed to the box shell and passes through the heat conduction plate, and the water outlet pipe is fixed on the box cover.

[0010] In some embodiments, the water inlet pipe and the water outlet pipe at least partially overlap in the depth direction of the heating chamber.

[0011] In some embodiments, the heating body includes a plurality of electric heating elements, which are arranged at intervals and extend along the circumference of the heat conducting plate.

[0012] In some of the embodiments, a plurality of the electric heating elements are arranged in parallel.

[0013] In some of the embodiments, a temperature controller is further included, wherein the temperature controller is disposed on the mounting surface and is electrically connected to the electric heating element.

[0014] Some of the embodiments further include a protective cover connected to the box body and covering the outside of the heat conducting plate.

[0015] In some embodiments, the protective cover cooperates with the box body to form a protective cavity, and the heat conducting plate and the heating body are located in the protective cavity.

[0016] In some of the embodiments, the outer wall surface and / or the inner wall surface of the protective cover is also covered with a thermal insulation layer.

[0017] Some of the embodiments further include a mounting portion, which is fixedly connected to the box body and is used to fix the fluid heating device in an installation environment.

[0018] In a second aspect, an embodiment of the present application provides a hydraulic module, which includes a fluid heating device as described in any one of the above.

[0019] In a third aspect, an embodiment of the present application provides a HVAC device, which includes the hydraulic module as described above.

[0020] In the fluid heating device according to the embodiment of the present application, the heating body is fixedly connected to the heat conducting plate, and the heat conducting plate is fixedly connected to the box body, so that the heating body is indirectly fixed to the box body, and the heating body can heat the box body and the fluid inside the box body, and does not contact the fluid inside the box body during heating, so that the heat conductivity is good, and there is a buffer, reducing the cold and hot shock. During installation, the heating body is installed on the outside of the box body, which reduces the installation steps and does not need to reserve an installation position for the heating body in the box body. The manufacturing process and installation method are relatively simple, which can effectively reduce the production cost.

[0021] Therefore, the present application fixes the heater on the side of the heat conducting plate facing away from the heating chamber, and the heat conducting plate is fixedly connected to the box. In the process of heating the fluid passed into the heating chamber by the pipe assembly, the heat generated by the heater is transferred to the box and the inside of the box through the heat conducting plate to heat the fluid. Compared with the traditional design in which the heater is directly arranged in the heating chamber, the scheme of the present application does not directly contact the fluid, so the heater is not easily corroded by the fluid during the heating process. In addition, when the heater is not in direct contact with the fluid, it is not easily affected by sudden changes in temperature and can achieve effective buffering. In this way, the heater is not easily deformed, thereby reducing safety hazards and improving the stability of the fluid heating device during long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 A partial schematic diagram of the system principle of the HVAC equipment for this application;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of an embodiment of the fluid heating device of the present application;

[0025] Figure 3 for Figure 2 A schematic diagram of the exploded structure of the fluid heating device shown in FIG.

[0026] Figure 4 for Figure 2 A schematic diagram of the top view of the fluid heating device shown in FIG.

[0027] Figure 5 This is a schematic cross-sectional structural diagram of a fluid heating device according to another embodiment of the present application;

[0028] Figure 6 for Figure 2 Middle AA section view;

[0029] Figure 7 for Figure 2 Middle BB section view;

[0030] Figure 8 for Figure 4 Middle CC section view.

[0031] Description of Figure Numbers:

[0032] 100, fluid heating device; 110, box body; 111, heating chamber; 112, box shell; 113, box cover; 120, heat conduction plate; 121, mounting surface; 130, heating body; 131, electric heating element; 140, pipe assembly; 141, water inlet pipe; 1411, pipe inlet and outlet; 142, water outlet pipe; 150, thermostat; 160, protective cover; 161, protective chamber; 162, insulation layer; 170, mounting portion; 210, electric control box; 220, working fluid pipe; 230, air cooler; 240, water pump.

[0033] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present application clearer, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0035] When the following description refers to the 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 embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0036] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings 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 specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0038] The present application provides a fluid heating device, a hydraulic module using the fluid heating device, and a HVAC device using the hydraulic module.

[0039] HVAC equipment includes but is not limited to air conditioners, multi-split units, heat pumps, water heaters, swimming pool machines, etc. Taking HVAC equipment with heating medium as working fluid and heating object as water as an example, the HVAC equipment may include a hydraulic module for heating water and an outdoor unit that can be installed outdoors and perform heat exchange with the external environment.

[0040] Figure 1 For a partial schematic diagram of the system principle of the HVAC equipment, please refer to Figure 1 The hydraulic module has a water circulation flow path and a working fluid pipe 220. Working fluid flows in the working fluid pipe 220. The working fluid can be a new working fluid such as R32, R290, CO2, etc. These working fluids have the advantages of high thermal conductivity, large latent heat of evaporation, good fluidity, low delivery pressure, etc. The hydraulic module heats the water by exchanging heat between the working fluid in the working fluid pipe 220 and the water in the water circulation flow path to output water of a set temperature, so as to provide the required hot water to the user end.

[0041] Specifically, the hydraulic module may also include components such as an air cooler 230, a water pump 240, and a fluid heating device 100. 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 interconnected inlets and outlets for the working fluid pipe 220 to pass through, and the other set of interconnected inlets and outlets for the water medium to pass through. When the water medium flows through the air cooler 230, the working fluid pipe 220 in the air cooler 230 contacts the water, and the working fluid in the working fluid pipe 220 dissipates heat to heat the water in the air cooler 230. The water pump 240 provides power for the water circulation flow. The fluid heating device 100 can be arranged between the air cooler 230 and the water pump 240, that is, the water heated by the air cooler 230 is reheated in the fluid heating device 100 and enters the water pump 240 through the water pipe, and then pumped by the water pump 240 to the required environment, such as the floor heating pipe or the user's domestic water pipe, so as to meet the user's hot water production needs. The hydraulic module of the present application can also be provided with an energy storage water tank in a conventional hydraulic module when having the fluid heating device 100, and the energy storage water tank can be arranged between the air cooler 230 and the fluid heating device 100.

[0042] The outdoor unit may include components such as an evaporator, a compressor, and an expansion valve. The evaporator, the compressor, the air cooler 230, and the expansion valve are connected in a loop in sequence through the working medium pipe 220. When the HVAC equipment is working, the working medium in the evaporator absorbs heat from the air, and the working medium changes from a low-temperature and low-pressure gas to a high-temperature and low-pressure gas; then the high-temperature gas is compressed by the compressor, so that the working medium forms a 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 water temperature in the water circulation flow path increases, and the working medium becomes a low-temperature and high-pressure liquid; the low-temperature and high-pressure liquid is converted into a low-temperature and low-pressure gas through the expansion valve, and then circulates to the evaporator again, thus completing the working medium circulation process.

[0043] In addition, the hydraulic module may also include a fuselage (not shown 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 other components may be arranged in the fuselage, and the fuselage is placed indoors, so that the water circulation flow path has a certain cold-proof function, and ensures that the water in the water pipe has a good circulation effect. The electric control box 210 is also arranged in the fuselage of the hydraulic module, and the electric control box 210 is integrated with a power supply system and a control system for supplying power and controlling the operation of each electrical component of the hydraulic module, and at the same time, it is convenient for the centralized setting and maintenance of the circuits, circuit boards and control components in the electric control box 210. A control panel electrically connected to the electric control box 210 may also be provided on the fuselage, so that the user can set parameters and control the working mode of the indoor unit by operating the control panel indoors.

[0044] In the prior art, when the fluid heating device 100 is applied to HVAC equipment, the electric heating tube is usually directly inserted into the tube body, that is, directly in contact with the water flow. The heating tube is often corroded by water and subjected to hot and cold shocks. After long-term operation, the heating tube is prone to cracking, resulting in leakage problems, which affects the user's safety.

[0045] The fluid heating device 100 provided in the present application and the hydraulic module and HVAC equipment equipped with the fluid heating device 100 are intended to improve the stability of the long-term operation of the electric heating water tank.

[0046] To achieve this, please refer to Figures 2 to 4 The fluid heating device 100 of the embodiment of the present application includes a housing 110, a heat conducting plate 120, a heating body 130 and a pipe assembly 140. The housing 110 is formed with a heating chamber 111; the heat conducting plate 120 is fixedly connected to the housing 110 and is located outside the heating chamber 111; the heating body 130 is fixedly connected to the heat conducting plate 120, and the heating body 130 is used to heat the fluid in the heating chamber 111; the pipe assembly 140 includes an inlet pipe 141 and an outlet pipe 142, both of which are fixedly connected to the housing 110 and communicate with the heating chamber 111.

[0047] The tube assembly 140 is made of a material with excellent thermal conductivity, such as stainless steel, aluminum alloy, etc., so that the tube assembly 140 can efficiently absorb the heat generated by the heating body 130, and the tube assembly 140 can also be produced by casting. Of course, the tube assembly 140 can also be made of other materials with high structural strength and high temperature resistance, and this application does not limit this. The cross-sectional shape of the tube assembly 140 can be circular, square, polygonal, etc. Figure 4 As exemplarily shown in FIG. 1 , the cross-section of the tube assembly 140 is circular, and its length dimension is greater than its radial dimension.

[0048] The heating body 130 is fixedly connected to the heat conducting plate 120, and the heat conducting plate 120 is fixedly connected to the box 110, so that the heating body 130 is indirectly fixed to the box 110, and the heating body 130 can heat the box 110 and the fluid inside the box 110, and does not contact the fluid in the box 110 during heating, so that the thermal conductivity is good, and there is a buffer, reducing the cold and hot shock. During installation, the heating body 130 is installed on the outside of the box 110, which reduces the installation steps, and there is no need to reserve the installation position of the heating body 130 in the box 110. The manufacturing process and installation method are relatively simple, which can effectively reduce the production cost. It can be understood that the fixing method of the heating body 130 and the heat conducting plate 120, and the fixing method of the heat conducting plate 120 and the box 110 can be, for example, a welding connection method with high connection strength, and of course, it can also be other connection methods such as screw connection, which is not limited by this application.

[0049] Therefore, the present application fixes the heating body 130 on the side of the heat conducting plate 120 away from the heating chamber 111, and the heat conducting plate 120 is fixedly connected to the box body 110. In the process of heating the fluid introduced into the heating chamber 111 by the tube assembly 140, the heat generated by the heating body 130 is transferred to the box body 110 and the inside of the box body 110 through the heat conducting plate 120 to heat the fluid. Compared with the traditional design in which the heating body 130 is directly arranged in the heating chamber 111, the scheme of the present application does not directly contact the fluid, so the heating body 130 is not easily corroded by the fluid during the heating process, and when the heating body 130 is not directly in contact with the fluid, it is not easily impacted by sudden changes in temperature, and can achieve effective buffering. In this way, the heating body 130 is not easily deformed, reducing safety hazards, thereby improving the stability of the fluid heating device during long-term operation.

[0050] Specifically, part of the structure of the water inlet pipe 141 extends into the heating chamber 111 and has an inlet pipe outlet 1411. The inlet pipe outlet 1411 is arranged adjacent to the heat conducting plate 120, and the direction of the inlet pipe outlet 1411 is perpendicular to the plate surface of the heat conducting plate 120. Through such an arrangement, when cold water enters the heating chamber 111 from the inlet pipe outlet 1411 of the water inlet pipe 141, it can quickly reach the heat conducting plate 120, so that the heating body 130 on the heat conducting plate 120 can heat the fluid more quickly, and the cold water flowing out of the inlet pipe outlet 1411 directly impacts the heat conducting plate 120, which can cause disturbance to the fluid in the heating chamber 111, so that the heating is uniform, avoid local heating caused by insufficient fluidity of the fluid in the heating chamber 111, improve the utilization rate of thermal energy, and thus improve the heating efficiency. After increasing the fluidity of the fluid in the heating chamber 111, it can also reduce the safety hazards caused by local overheating, and further improve the stability of the fluid heating device 100 during long-term operation.

[0051] The box body 110 includes a box shell 112 and a box cover 113. The box cover 113 is connected to the box shell 112 and encloses a heating chamber 111. The heat conducting plate 120 is fixed to the outside of the box shell 112 and is arranged opposite to the box cover 113 in the depth direction of the heating chamber 111. In one embodiment, when the fluid heating device 100 is fixed to the installation environment, the box cover 113 and the heat conducting plate 120 are arranged opposite to each other in the vertical direction. The water inlet pipe 141 and the water outlet pipe 142 are fixed to the box cover 113. The length of 142 extending into the heating chamber 111 is shorter than the length of the water inlet pipe 141 extending into the heating chamber 111. Therefore, when the cold water flowing into the heating chamber 111 from the water inlet pipe 141 is heated, the density of the hot water decreases and it will rise to the box cover 113 and flow out from the water outlet pipe 142 to the outside of the box body 110, so that the cold water enters the heating chamber 111 from the bottom and flows out from the top, increasing convection and reducing heat exchange differences, thereby improving heating efficiency and improving water outlet efficiency.

[0052] In another embodiment, see Figure 5 The water inlet pipe 141 is fixed to the box shell 112 and penetrates the heat conducting plate 120, and the water outlet pipe 142 is fixed to the box cover 113, and the water inlet pipe 141 and the water outlet pipe 142 at least partially overlap in the depth direction of the heating chamber 111. In this way, when the fluid heating device 100 needs to drain water, it can be directly discharged from the water outlet pipe 142 on the side of the box cover 113, and there will be no backflow from the water inlet pipe 141 when draining water because the water inlet pipe 141 and the water outlet pipe 142 are arranged on the same side.

[0053] In some embodiments, the heat conducting plate 120 can be made of a material with high thermal conductivity and high material strength such as aluminum alloy to ensure heat transfer efficiency and connection strength. The heat conducting plate 120 includes a mounting surface 121 facing away from the box body 110, and the heating body 130 is arranged on the mounting surface 121, which makes installation more convenient, easy to position, and reduces installation costs.

[0054] The heating body 130 includes a plurality of electric heating elements 131, which are arranged at intervals and extend circumferentially along the heat conducting plate 120. Through such an arrangement, the plurality of electric heating elements 131 are formed into a C-shaped plane tube with a large bending radius, which can reduce the deformation degree of the electric heating element 131 and thereby reduce the risk of cracking in the bent portion, while being easy to fix on the heat conducting plate 120.

[0055] In addition, multiple electric heating elements 131 are arranged in parallel, that is, multiple electric heating elements 131 are connected in parallel on the circuit. Such an arrangement facilitates individual control of each of the multiple electric heating elements 131, so that some or all of the electric heating elements 131 can be controlled to start and operate according to the use requirements, and the energy utilization rate can be improved while meeting the power requirements. Moreover, when multiple electric heating elements 131 are connected in parallel, when one of the electric heating elements 131 is abnormal, the other electric heating elements 131 can also operate to ensure the continuous working output of the HVAC equipment, and the reliability is high. Of course, when multiple electric heating elements 131 are connected in parallel, the electric heating elements 131 have a larger operating space in assembly and are easier to assemble.

[0056] Of course, multiple electric heating elements 131 can also be arranged in series, that is, multiple electric heating elements 131 extend along the circumference of the heat conducting plate 120, and are arranged in sequence on the extension path and spliced ​​end to end to form an electrical series connection, so that the multiple electric heating elements 131 cover the edge of the heat conducting plate 120 as much as possible, so that sufficient heating can be carried out, and the electrical connection is also relatively simple.

[0057] In some embodiments, Figures 6 to 8As shown, the fluid heating device 100 also includes a thermostat 150, which is arranged on the mounting surface 121. The connection between the thermostat 150 and the mounting surface 121 may be provided with a fixing stud on the mounting surface 121. The thermostat 150 is electrically connected to the electric heating element 131, so that the temperature of the fluid in the heating chamber 111 can be controlled, that is, the heating control of the electric heating element 131 can be realized. The thermostat may be a manual thermostat or an automatic thermostat. When the temperature of the fluid in the heating chamber 111 exceeds the preset temperature, the automatic thermostat will disconnect the connection between the electric heating element 131 and the power supply, so that the electric heating element 131 stops heating; when the water temperature is lower than the preset temperature, the automatic thermostat will connect the electric heating element 131 to the power supply, so that the electric heating tube continues heating. Of course, if the automatic temperature controller fails, the temperature of the fluid in the heating chamber 111 will continue to rise. When the water temperature reaches a preset critical value, the manual temperature controller can be controlled manually to disconnect the electric heating element 131 from the power supply, causing the electric heating element 131 to stop heating, thereby achieving operational reliability.

[0058] It can be understood that in order to further improve the reliability of operation, the heating control form of the electric heating element 131 can also include at least one over-temperature protection device such as a sudden jump thermostat, a fuse, a temperature sensor, etc. For example, a sudden jump thermostat, a fuse, and a temperature sensor can be provided at the same time, so that real-time temperature detection can be achieved during the heating process, and when necessary, automatic power-off can be performed to improve safety.

[0059] In order to further improve safety, the fluid heating device 100 also includes a protective cover 160, which is connected to the box body 110 and covers the outside of the heat conducting plate 120, and the protective cover 160 and the box body 110 cooperate to form a protective cavity 161, and the heat conducting plate 120 and the heating body 130 are located in the protective cavity 161. Among them, the protective cover 160 can be made of fireproof material. The setting of the protective cover 160 can prevent the high-temperature melting of the components of the fluid heating device 100 in the case of abnormal dry burning and excessive temperature, causing other components in the hydraulic module to generate high heat and catch fire, thereby reducing the impact of the fluid heating device 100 on other components in the hydraulic module in the case of abnormal failure. In addition, the heating body 130 and the thermostat 150 are both located in the protective cavity 161 at this time, which can facilitate the electrical connection between the two, making the wiring convenient, and at the same time realizing the safety protection and heat preservation of the heating body 130, improving the safety and heating efficiency of the fluid heating device 100, thereby further improving the stability of the long-term operation of the fluid heating device 100.

[0060] Since the protective cover 160 and the housing 110 cooperate to form a protective cavity 161, so that the protective cavity 161 forms a closed bottom, the protective cavity 161 can well receive the fluid in and out disturbance of the fluid in the heating cavity 111 during the heating process, prevent leakage, and will not endanger other electronic components located below the fluid heating device 100, so that the reliability during operation is further improved. On the other hand, under extreme working conditions, when the heating body 130 melts, the protective cavity 161 formed by the protective cover 160 and the housing 110 can also receive this part of the melted heating body 130 due to its closed bottom, thereby effectively protecting the components located below the fluid heating device 100.

[0061] Of course, the protective cover 160 can be provided with a wire outlet hole corresponding to the above-mentioned temperature controller 150, and when the setting form is that the water inlet pipe 141 is fixed on the heat conductive plate 120 and extends toward the outside of the box body 110, and the inlet pipe outlet 1411 is formed on the heat conductive plate 120, in order to ensure that the water inlet pipe 141 is connected with other devices of the hydraulic module by pipeline, the protective cover 160 is also provided with an avoidance opening for the water inlet pipe 141 to extend out of the outside of the box body 110 to facilitate the routing of the pipe.

[0062] Furthermore, the outer wall surface and the inner wall surface of the protective cover 160, or the outer wall surface or the inner wall surface of the protective cover 160, are also covered with an insulation layer 162. That is, the present application can be that the outer wall surface of the protective cover 160 is covered with the insulation layer 162 alone, or the inner wall surface of the protective cover 160 is provided with the insulation layer 162 alone, or the inner wall surface and the outer wall surface of the protective cover 160 are covered with the insulation layer 162 at the same time, wherein the material of the insulation layer 162 can be selected from, for example, sponge, foam, etc., through such a setting, the protective cover 160 can achieve the protection function, and can also reduce energy loss, and can also reduce the heat radiation outward during the operation of the fluid heating device 100, affecting other components. There are multiple advantages.

[0063] The fluid heating device 100 also includes a mounting portion 170, which is fixedly connected to the box body 110. The mounting portion 170 is used to fix the fluid heating device 100 to the installation environment. The mounting portion 170 in the embodiment of the present application is formed as a plate-like structure extending from the edge of the box body 110 to the outside, which is convenient for screwing or welding the fluid heating device 100. Of course, the mounting portion 170 can also be in the form of a threaded column, a mounting platform, etc. to adapt to different installation environments, and the mounting portion 170 is formed on the box body 110, and the mounting portion 170 can be integrally formed during the die-casting or pouring molding process of the box body 110, which can improve production efficiency.

[0064] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0065] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A fluid heating device, characterized in that: include: A box body is formed with a heating chamber; A heat conducting plate, fixedly connected to the box body and located outside the heating chamber, wherein the heat conducting plate comprises a mounting surface facing away from the box body; A heating body, fixedly connected to the heat conducting plate and located on the mounting surface, the heating body being used to heat the fluid in the heating chamber; as well as The pipe assembly comprises a water inlet pipe and a water outlet pipe, wherein the water inlet pipe and the water outlet pipe are both fixedly connected to the box body and communicated with the heating chamber.

2. The fluid heating device according to claim 1, characterized in that: A portion of the water inlet pipe extends into the heating chamber and has an inlet pipe outlet, and the inlet pipe outlet is arranged adjacent to the heat conduction plate.

3. The fluid heating device according to claim 2, characterized in that: The direction of the inlet and outlet of the heat conducting plate is perpendicular to the plate surface of the heat conducting plate.

4. The fluid heating device according to claim 2, characterized in that: The box body comprises a box shell and a box cover, the box cover is connected to the box shell and encloses the heating chamber, the heat conducting plate is fixed to the outside of the box shell and arranged opposite to the box cover in the depth direction of the heating chamber, and the water inlet pipe and the water outlet pipe are fixed to the box cover; Wherein, the length of the water outlet pipe extending into the heating chamber is shorter than the length of the water inlet pipe extending into the heating chamber.

5. The fluid heating device according to claim 2, characterized in that: The box body comprises a box shell and a box cover, the box cover is connected to the box shell and encloses the heating chamber, the heat conducting plate is fixed to the outside of the box shell and is arranged opposite to the box cover in the depth direction of the heating chamber; Wherein, the water inlet pipe is fixed on the box shell and penetrates the heat conduction plate, and the water outlet pipe is fixed on the box cover.

6. The fluid heating device according to claim 5, characterized in that: The water inlet pipe and the water outlet pipe at least partially overlap in the depth direction of the heating chamber.

7. The fluid heating device according to any one of claims 1 to 6, characterized in that: The heating body comprises a plurality of electric heating elements, which are arranged at intervals and extend along the circumference of the heat conducting plate.

8. The fluid heating device according to claim 7, characterized in that: A plurality of the electric heating elements are arranged in parallel.

9. The fluid heating device according to claim 7, characterized in that: It also includes a temperature controller, which is arranged on the installation surface and is electrically connected to the electric heating element.

10. The fluid heating device according to any one of claims 1 to 6, characterized in that: It also includes a protective cover, which is connected to the box body and covers the outside of the heat conducting plate.

11. The fluid heating device according to claim 10, characterized in that: The protective cover cooperates with the box body to form a protective cavity, and the heat conducting plate and the heating body are located in the protective cavity.

12. The fluid heating device according to claim 10, characterized in that: The outer wall surface and / or the inner wall surface of the protective cover are also covered with a heat-insulating layer.

13. The fluid heating device according to any one of claims 1 to 6, characterized in that: It also includes a mounting portion, which is fixedly connected to the box body and is used to fix the fluid heating device in an installation environment.

14. A hydraulic module, characterized in that: Comprising a fluid heating device as claimed in any one of claims 1 to 13.

15. A HVAC equipment, characterized in that: Comprising a hydraulic module as claimed in claim 14.

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