CN216481629U - Liquid heating device and system - Google Patents

Abstract

The embodiment of the utility model provides a liquid heating device and a system, and relates to the technical field of medical instruments. The liquid heating system comprises the liquid heating device. The liquid heating device and the liquid heating system can reduce heat loss and improve the heating efficiency of liquid.

Description

Liquid heating device and system

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a liquid heating device and a liquid heating system.

Background

In the use process of medical equipment, liquid (water or liquid medicine) is often needed for auxiliary treatment. In some medical situations, it is necessary to heat the liquid by using the liquid heating device, however, the liquid heating device in the prior art has low heating efficiency.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a liquid heating apparatus and system which effectively ameliorates the aforementioned problems.

The embodiment of the utility model is realized by the following steps:

in a first aspect, the present invention provides a liquid heating apparatus, including a first heat transfer element, a second heat transfer element, and a heating element, where the first heat transfer element, the heating element, and the second heat transfer element are sequentially stacked, the first heat transfer element is provided with a first flow channel, the second heat transfer element is provided with a second flow channel, the first flow channel is communicated with the second flow channel, and the heating element is configured to heat liquid in the first flow channel and/or the second flow channel.

In an alternative embodiment, an accommodating cavity is formed between the first heat transfer element and the second heat transfer element, the heating element includes a heating portion and a conductive portion, the heating portion and the conductive portion are connected to each other, the heating portion is accommodated in the accommodating cavity, and the conductive portion extends out of the accommodating cavity.

In an alternative embodiment, a gap is formed between a peripheral wall of the heating portion and an inner wall of the accommodating chamber.

In an alternative embodiment, the liquid heating apparatus further comprises an insulated first thermally conductive member and/or an insulated second thermally conductive member;

the first heat-conducting member pad is disposed between the first heat-transferring member and the heating member, and/or the second heat-conducting member pad is disposed between the second heat-transferring member and the heating member.

In an optional embodiment, the first heat transfer member is provided with a first liquid inlet communicated with the first flow passage and a first liquid outlet communicated with the first flow passage, and the second heat transfer member is provided with a second liquid inlet communicated with the second flow passage and a second liquid outlet communicated with the second flow passage, wherein the second liquid outlet is communicated with the first liquid inlet.

In an optional embodiment, the liquid heating apparatus further includes a first temperature sensor, a second temperature sensor and a controller, the first temperature sensor is installed at the first liquid outlet and outputs a first signal representing the temperature of the liquid output from the first liquid outlet, the second temperature sensor is installed at the second liquid inlet and outputs a second signal representing the temperature of the liquid input from the second liquid inlet, the controller is simultaneously connected with the first temperature sensor, the second temperature sensor and the heating member electrically, and the controller is used for controlling the heating member according to the first signal and the second signal.

In an optional embodiment, the liquid heating apparatus further includes a temperature control switch, the temperature control switch is electrically connected to the heating member, and the temperature control switch is configured to obtain a surface temperature of the first heat transfer member or the second heat transfer member, and control the heating member to stop heating when the surface temperature is higher than a preset value.

In an optional embodiment, the first heat transfer element is provided with a clamping groove, the liquid heating device further comprises an insulating sleeve, the insulating sleeve is clamped in the clamping groove, and the temperature control switch is sleeved inside the insulating sleeve.

In an alternative embodiment, the liquid heating device further comprises a sealing gasket, the sealing gasket is arranged between the first heat transfer element and the second heat transfer element, and the sealing gasket is provided with an avoiding hole for avoiding the heating element.

In an alternative embodiment, the first flow channel and the second flow channel extend in a serpentine or spiral manner.

In an alternative embodiment, the liquid heating apparatus further includes a first cover plate and a first sealing ring, the first cover plate is disposed on a side of the first heat transfer element away from the second heat transfer element, and the first sealing ring is disposed between the first cover plate and the first heat transfer element.

In an alternative embodiment, the liquid heating apparatus further includes a second cover plate covering a side of the second heat transfer element away from the first heat transfer element, and a second gasket disposed between the second cover plate and the second heat transfer element.

In a second aspect, the present invention provides a liquid heating system comprising a power supply and a liquid heating apparatus as described in any preceding embodiment, the output of the power supply being electrically connected to the heating element.

The beneficial effects of the embodiment of the utility model include, for example:

the embodiment of the utility model provides a liquid heating device which comprises a first heat transfer element, a second heat transfer element and a heating element, wherein the first heat transfer element is provided with a first flow passage, the second heat transfer element is provided with a second flow passage, and the first flow passage is communicated with the second flow passage, so that liquid can flow into the second flow passage from the first flow passage or can flow into the first flow passage from the second flow passage. In addition, the first heat transfer element, the heating element and the second heat transfer element are sequentially stacked, so that the heating element is arranged between the first heat transfer element and the second heat transfer element, heat generated by the heating element can be greatly transferred to the first heat transfer element and/or the second heat transfer element, and the first heat transfer element and the second heat transfer element can prevent the heat generated by the heating element from being diffused into air, so that the heat loss of the heating element is reduced, and the heating efficiency of liquid is improved.

The embodiment of the utility model also provides a liquid heating system which comprises the liquid heating device and has all the functions of the liquid heating device. The liquid heating system can also improve the liquid heating efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of a liquid heating system according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a liquid heating apparatus according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of a liquid heating apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a heating element provided in an embodiment of the present invention;

FIG. 5 is a block diagram of the control among the first temperature sensor, the second temperature sensor, the controller and the heating element provided by the embodiment of the present invention;

fig. 6 is a control block diagram between the temperature controlled switch and the heating element according to the embodiment of the present invention;

FIG. 7 is a schematic structural view of a first heat transfer element according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a second heat transfer element according to an embodiment of the present invention.

Icon: 1-a liquid heating system; 11-a power supply; 12-a liquid heating device; 121-a first heat transfer element; 1211-a first flow channel; 1212-a first liquid inlet; 1213-a first outlet port; 1214-a card slot; 122-a second heat transfer element; 1221-a second flow channel; 1222-a second inlet; 1223-a second liquid outlet; 123-a heating element; 1231-heating section; 1232-a conductive portion; 124-a containing cavity; 125-gap; 126-a first thermally conductive member; 127-a second thermally conductive member; 128-connecting tube; 129-a first joint; 130-a second joint; 131-a first temperature sensor; 132-a second temperature sensor; 133-a controller; 134-temperature controlled switch; 135-an insulating sleeve; 136-a gasket; 1361-avoidance hole; 137-a first cover plate; 138-a first sealing ring; 139-a second cover plate; 140-a second seal ring; 141-a third joint; 142-fourth joint.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a liquid heating system 1 according to the present embodiment. The liquid heating system 1 comprises a power source 11 and a liquid heating device 12, wherein the power source 11 can provide electric energy for the heating operation of the liquid heating device 12.

Referring to fig. 1 to fig. 3, fig. 2 is a schematic cross-sectional view of the liquid heating apparatus 12 provided in this embodiment, and fig. 3 is an exploded schematic view of the liquid heating apparatus 12 provided in this embodiment. In this embodiment, the liquid heating device 12 includes a first heat transfer element 121, a second heat transfer element 122 and a heating element 123, the first heat transfer element 121 is provided with a first flow passage 1211, the second heat transfer element 122 is provided with a second flow passage 1221, the first flow passage 1211 is communicated with the second flow passage 1221, so that the liquid in the first flow passage 1211 can flow into the second flow passage 1221, or the liquid in the second flow passage 1221 can also flow into the first flow passage 1211, the heating element 123 is electrically connected to the power source 11, and after the heating element 123 is energized, heat is generated, so that the fluid in the first flow passage 1211 and/or the second flow passage 1221 can be heated.

Referring to fig. 2, in the present embodiment, the first heat transfer member 121, the heating member 123, and the second heat transfer member 122 are sequentially stacked. Thus, since the heating member 123 is disposed between the first heat transfer member 121 and the second heat transfer member 122, heat generated by the heating member 123 can be transferred to the first heat transfer member 121 and/or the second heat transfer member 122 in a large amount, and the first heat transfer member 121 and the second heat transfer member 122 can prevent the heat of the heating member 123 from being diffused into the air, thereby reducing heat loss of the heating member 123 and improving heating efficiency of the liquid.

In this embodiment, the heating member 123 is made of a metal sheet, and the surface of the metal sheet is coated with a resistive layer. Thus, after the heating element 123 is in communication with the power source 11, current passes through the resistive layer, which generates heat.

Alternatively, in practice, a resistive layer may be applied to one side of the heating member 123, so that the heat generated by the heating member 123 can heat the fluid in the first flow passage 1211 or the second flow passage 1221 independently.

Alternatively, in practical applications, resistive layers may be coated on both sides of the heating member 123, so that the heat generated by the heating member 123 can heat the fluid in the first flow passage 1211 and the second flow passage 1221 simultaneously, thereby further improving the heating efficiency of the fluid.

Alternatively, in other embodiments, the heating element 123 may be a self-heating material that is contacted with oxygen using a chemical agent to release a large amount of heat through a chemical reaction to effect heating of the liquid.

It is understood that in this embodiment, the first heat transfer member 121 and the second heat transfer member 122 are made of a material with high thermal conductivity, so that heat can be transferred to the liquid in the first flow passage 1211 and the second flow passage 1221 more quickly.

With reference to fig. 2 to 4, fig. 4 is a schematic structural diagram of the heating element 123 provided in this embodiment. In the present embodiment, an accommodating cavity 124 is formed between the first heat transfer element 121 and the second heat transfer element 122, the heating element 123 includes a heating portion 1231 and a conductive portion 1232 connected to each other, the heating portion 1231 is accommodated in the accommodating cavity 124, and the conductive portion 1232 extends out of the accommodating cavity 124.

It can be understood that the surface of the heating portion 1231 is coated with the resistive layer, and after the conductive portion 1232 is electrically connected to the power source 11, the heat generated by the heating portion 1231 is dissipated into the accommodating cavity 124, and then the fluid in the first flow channel 1211 or the second flow channel 1221 is heated, so that the heat is not easily transferred to the external air. In addition, the conductive part 1232 extends out of the accommodating cavity 124, so that the conductive part 1232 can be conveniently connected with the power supply 11, and the operation and the use are convenient. In addition, in the embodiment, the conductive portion 1232 is used only for conducting electricity, and the heat transfer efficiency is low, so that the heat generated by the heating portion 1231 can be effectively prevented from being transferred to the external air through the conductive portion 1232, the effective conversion rate of the heat energy can be improved, and the potential safety hazard caused by the over-high temperature of the conductive portion 1232 after heating can be avoided.

Specifically, in the present embodiment, a concave cavity is formed in a part of the top end of the second heat transfer element 122, and after the first heat transfer element 121 is overlapped on the second heat transfer element 122, the bottom wall of the first heat transfer element 121 closes the upper opening of the concave cavity, so as to form the receiving cavity 124. It can be understood that the heating portion 1231 is accommodated in the accommodating cavity 124, the first heat transfer member 121 and the second heat transfer member 122 can better prevent the heat generated by the heating portion 1231 from being diffused into the external air, and the heat generated by the heating portion 1231 can be greatly transferred into the first flow passage 1211 and/or the second flow passage 1221, thereby effectively improving the heating efficiency of the liquid.

Alternatively, in other embodiments, a cavity may be formed by partially recessing the bottom end of the first heat transfer element 121, and after the first heat transfer element 121 is overlapped on the second heat transfer element 122, the top wall of the second heat transfer element 122 closes the lower opening of the cavity, so as to form the receiving cavity 124.

Alternatively, in other embodiments, it is also possible that the bottom wall of the first heat transfer member 121 and the top wall of the second heat transfer member 122 are both flat surfaces, and then the bottom wall of the first heat transfer member 121 and the top wall of the second heat transfer member 122 abut against both sides of the heating member 123, respectively, so that the effect of the heating member 123 on the liquid in the first flow passage 1211 and/or the second flow passage 1221 can also be achieved.

Referring to fig. 2, in the present embodiment, a gap 125 is formed between the peripheral wall of the heating portion 1231 and the inner wall of the accommodating chamber 124. In this way, when the heating portion 1231 is energized, the gap 125 can effectively reduce the risk of occurrence of electric polarization in the inner wall of the accommodating chamber 124. That is, in the present embodiment, the width of the gap 125 can be understood as a creepage distance.

Generally, the minimum distance between the peripheral wall of the heating portion 1231 and the inner wall of the accommodating chamber 124 is kept to 4mm or more, which can satisfy the creepage distance requirement.

In this embodiment, in order to improve safety, gaps 125 are formed between each portion of the peripheral wall of the heating portion 1231 and each portion of the inner wall of the accommodating chamber 124.

Referring to fig. 2 and 3, in the present embodiment, the liquid heating apparatus 12 further includes an insulating first heat-conducting member 126 and an insulating second heat-conducting member 127, the first heat-conducting member 126 is disposed between the first heat-transferring member 121 and the heating member 123, and the second heat-conducting member 127 is disposed between the second heat-transferring member 122 and the heating member 123.

It is understood that the first heat-conducting member 126 can transfer the heat generated by the heating member 123 to the first heat-conducting member 121, thereby heating the fluid in the first flow passage 1211. The second heat transfer member 127 may transfer heat generated by the heating member 123 to the second heat transfer member 122, thereby heating the fluid in the second flow passage 1221.

It should be noted that the first heat-conducting member 126 can isolate the first heat-conducting member 121 from the heating member 123, so that the aforementioned electric polarization of the first heat-conducting member 121 can be avoided. Similarly, the second heat transfer member 127 can isolate the second heat transfer member 122 from the heating member 123, thereby preventing the second heat transfer member 122 from the aforementioned electric polarization.

Generally, the first heat conduction member 126 and the second heat conduction member 127 are made of a material having high heat conductivity and good insulation. Specifically, in the present embodiment, the first heat conduction member 126 and the second heat conduction member 127 are made of ceramic plates.

Alternatively, both the first heat-conducting member 126 and the second heat-conducting member 127 may be provided at the same time, or only one of them may be provided.

Referring to fig. 2 and 3, in the present embodiment, the liquid heating apparatus 12 further includes a connecting pipe 128, and the first flow passage 1211 and the second flow passage 1221 are communicated with each other through the connecting pipe 128. Alternatively, in other embodiments, the first heat transfer member 121 and the second heat transfer member 122 may be directly spliced together such that the first flow passage 1211 and the second flow passage 1221 are directly connected.

Alternatively, the connection pipe 128 and the first heat transfer member 121 may be fixedly connected or detachably connected. The connection pipe 128 and the second heat transfer element 122 may be fixedly connected or detachably connected.

The shape of the connection pipe 128 may be selected according to an actual installation scenario, and in the present embodiment, the connection pipe 128 is a U-shaped pipe because the first heat transfer member 121 and the second heat transfer member 122 are stacked.

Referring to fig. 2 and 3, in the present embodiment, the first heat transfer member 121 is provided with a first liquid inlet 1212 and a first liquid outlet 1213, the first liquid inlet 1212 and the first liquid outlet 1213 are both communicated with the first flow passage 1211, the second heat transfer member 122 is provided with a second liquid inlet 1222 and a second liquid outlet 1223, the second liquid inlet 1222 and the second liquid outlet 1223 are both communicated with the second flow passage 1221, and both ends of the connecting pipe 128 are respectively communicated with the second liquid outlet 1223 and the first liquid inlet 1212.

In this embodiment, the liquid enters the second flow passage 1221 from the second liquid inlet 1222, then enters the first flow passage 1211 through the second liquid outlet 1223, the connecting pipe 128 and the first liquid inlet 1212, and finally flows out of the first liquid outlet 1213. It is understood that the heating member 123 can heat the liquid sufficiently during the flowing of the liquid in the first flow passage 1211 and the second flow passage 1221, so that the liquid can meet the subsequent medical requirement.

Alternatively, in other embodiments, the relative positions of the first heat transfer element 121 and the second heat transfer element 122 are changed, and the first inlet port 1212 and the second outlet port 1223 may not be directly communicated with each other by the connection pipe 128.

Referring to fig. 2 and 3, in this embodiment, the liquid heating apparatus 12 further includes a first connector 129 and a second connector 130, the first connector 129 is installed at the first liquid outlet 1213, the second connector 130 is installed at the second liquid inlet 1222, and the first connector 129 and the second connector 130 can conveniently connect with other pipes, so that the process of installing and removing other pipes can be more convenient.

Referring to fig. 2 and fig. 3, in this embodiment, the liquid heating apparatus 12 further includes a third joint 141 and a fourth joint 142, the third joint 141 is installed at the first liquid inlet 1212, the fourth joint 142 is installed at the second liquid outlet 1223, and two ends of the connecting pipe 128 are respectively connected to the third joint 141 and the fourth joint 142, so as to facilitate the installation and the removal of the connecting pipe 128.

Referring to fig. 2, fig. 3 and fig. 5, fig. 5 is a control block diagram of the first temperature sensor 131, the second temperature sensor 132, the controller 133 and the heating element 123 provided in the present embodiment. In this embodiment, the liquid heating apparatus 12 further includes a first temperature sensor 131, a second temperature sensor 132, and a controller 133, wherein the first temperature sensor 131 is installed at the first liquid outlet 1213, the second temperature sensor 132 is installed at the second liquid inlet 1222, and the controller 133 is electrically connected to the first temperature sensor 131, the second temperature sensor 132, and the heating element 123.

It is understood that, in the present embodiment, the first temperature sensor 131 may detect the temperature of the liquid at the first liquid outlet orifice 1213, and may issue a first signal indicative of the temperature of the liquid output from the first liquid outlet orifice 1213 to the controller 133. The second temperature sensor 132 may detect a temperature of the liquid at the second inlet 1222 and may issue a second signal to the controller 133 indicative of the temperature of the liquid input from the second inlet 1222.

In this embodiment, the controller 133 may obtain the temperatures of the liquids in the first flow passage 1211 and the second flow passage 1221 in real time after obtaining the first signal and the second signal. That is, the controller 133 may calculate the temperature difference between the liquid at the first liquid outlet 1213 and the liquid at the second liquid inlet 1222 in real time, and then may control the heating power of the heating element 123 according to the temperature difference, so as to control the final heating temperature of the liquid, and improve the accuracy of the heated temperature of the liquid. In the present embodiment, since the heating member 123 is electrically connected to the power supply 11, the controller 133 can control the heating power of the heating member 123 by controlling the output power of the power supply 11.

Of course, in other embodiments, a variable resistor may be disposed on the heating element 123, and the controller 133 may also change the heating efficiency of the heating element 123 by controlling the resistance value of the resistor.

Referring to fig. 2, fig. 3 and fig. 6, fig. 6 is a control block diagram between the temperature control switch 134 and the heating element 123 according to the present embodiment. The liquid heating apparatus 12 further includes a temperature control switch 134, the temperature control switch 134 is installed on the first heat transfer element 121 or the second heat transfer element 122, the temperature control switch 134 is electrically connected to the heating element 123, and the temperature control switch 134 can detect the surface temperature of the first heat transfer element 121 or the second heat transfer element 122.

Specifically, if the detected surface temperature of the first heat transfer element 121 or the second heat transfer element 122 is higher than a preset value, the temperature control switch 134 may cut off the power line of the heating element 123, thereby causing the heating element 123 to stop heating. It will be appreciated that in this embodiment, the temperature controlled switch 134 may function as an overheat protection, improving the overall safety of the liquid heating apparatus 12.

With reference to fig. 2 and fig. 3, in this embodiment, the liquid heating apparatus 12 further includes an insulating sleeve 135, the first heat transfer element 121 is provided with a clamping groove 1214, the insulating sleeve 135 is clamped in the clamping groove 1214, and the clamping groove 1214 can limit the insulating sleeve 135 to prevent the insulating sleeve 135 from falling off. Specifically, the slot 1214 is in interference fit with the insulating sleeve 135, and the insulating sleeve 135 is less likely to fall off.

In addition, in this embodiment, the temperature control switch 134 is sleeved inside the insulating sleeve 135, and the insulating sleeve 135 can protect the temperature control switch 134, so as to prevent the temperature control switch 134 from being electrically polarized.

It should be noted that, in the present embodiment, the insulating sleeve 135 has poor electrical conductivity but good thermal conductivity, so even though the temperature controlled switch 134 is sleeved in the insulating sleeve 135, the insulating sleeve 135 does not affect the temperature monitoring of the temperature controlled switch 134 on the first heat transfer element 121 or the second heat transfer element 122.

Alternatively, in other embodiments, the clamping grooves 1214 may also be provided on the second heat transfer element 122.

Referring to fig. 2 and 3, in the present embodiment, the liquid heating apparatus 12 further includes a sealing gasket 136, the sealing gasket 136 is disposed between the first heat transfer element 121 and the second heat transfer element 122, and the sealing gasket 136 can improve the sealing performance between the first heat transfer element 121 and the second heat transfer element 122, so that not only the liquid cannot be prevented from leaking out from the gap between the first heat transfer element 121 and the second heat transfer element 122, but also the heat generated by the heating element 123 can be reduced from being dissipated into the air from the gap between the first heat transfer element 121 and the second heat transfer element 122.

With reference to fig. 2, it can be understood that in the present embodiment, the heating member 123 is placed in the accommodating chamber 124, the sealing gasket 136 is placed on the peripheral wall of the accommodating chamber 124, and after the first heat transfer member 121 is overlapped on the second heat transfer member 122, the sealing member is pressed between the first heat transfer member 121 and the second heat transfer member 122, and after the sealing member is pressed, the sealing performance can be further improved.

Referring to fig. 3, in the present embodiment, the sealing gasket 136 is further provided with an avoiding hole 1361 for avoiding the heating element 123, that is, in the present embodiment, the avoiding hole 1361 is communicated with the accommodating cavity 124, and the heating element 123 can be placed into the accommodating cavity 124 or taken out of the accommodating cavity 124 through the avoiding hole 1361, so as to facilitate installation and replacement of the heating element 123.

Referring to fig. 2 and fig. 3, in the present embodiment, the liquid heating apparatus 12 further includes a first cover plate 137 and a first sealing ring 138, the first cover plate 137 is disposed on a side of the first heat transfer element 121 away from the second heat transfer element 122, and the first sealing ring 138 is disposed between the first cover plate 137 and the first heat transfer element 121. Thus, the first gasket 138 has a good sealing effect, and can prevent the liquid in the first flow passage 1211 from leaking.

Similarly, in the present embodiment, the liquid heating apparatus 12 further includes a second cover plate 139 and a second sealing ring 140, the second cover plate 139 is disposed on the side of the second heat transfer element 122 away from the first heat transfer element 121, and the second sealing ring 140 is disposed between the second cover plate 139 and the second heat transfer element 122. In this way, the second seal 140 also has a good sealing effect, and can prevent the liquid in the second flow passage 1221 from leaking.

Referring to fig. 7 and 8, fig. 7 is a schematic structural diagram of a first heat transfer element 121 provided in this embodiment, and fig. 8 is a schematic structural diagram of a second heat transfer element 122 provided in this embodiment. In this embodiment, the first flow passage 1211 and the second flow passage 1221 extend in a winding or spiral manner, so that the flowing time of the liquid in the first flow passage 1211 and the second flow passage 1221 can be prolonged, and the heating time of the heating member 123 for the liquid in the first flow passage 1211 and the second flow passage 1221 can be prolonged, so as to improve the heat utilization rate, and make the temperature of the liquid meet the requirement of the subsequent medical operation.

In summary, the working principle of the liquid heating apparatus 12 provided in this embodiment is as follows:

two pipelines are respectively externally connected to the first connector 129 and the second connector 130, the heating member 123 is powered on, a large amount of heat is generated after the heating member 123 is powered on, then the liquid enters the second flow passage 1221 through the second connector 130 and the second liquid inlet 1222, the liquid flows in the second flow passage 1221 and then flows into the first flow passage 1211 through the second liquid outlet 1223, the connecting pipe 128 and the first liquid inlet 1212, and the heating member 123 can simultaneously heat the liquid in the first flow passage 1211 and the second flow passage 1221 in the process. The liquid entering the first flow passage 1211 is heated and then flows through the first liquid outlet 1213 and the first joint 129 into the external pipe, and finally the heated liquid is stored in preparation for the subsequent medical treatment.

In the process of flowing the liquid in the first flow passage 1211 and the second flow passage 1221, the first temperature sensor 131 may detect the temperature of the liquid at the first liquid outlet 1213, the second temperature sensor 132 may detect the temperature of the liquid at the second liquid inlet 1222, and the controller 133 may receive the first signal and the second signal sent by the first temperature sensor 131 and the second temperature sensor 132, calculate the temperature difference between the liquid at the first liquid outlet 1213 and the liquid at the second liquid inlet 1222 in real time, and then control the heating power of the heating element 123 according to the temperature difference, so as to control the final heating temperature of the liquid and improve the accuracy of the heated temperature of the liquid.

The above description is only exemplary of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. The liquid heating device is characterized by comprising a first heat transfer element (121), a second heat transfer element (122) and a heating element (123), wherein the first heat transfer element (121), the heating element (123) and the second heat transfer element (122) are sequentially stacked, the first heat transfer element (121) is provided with a first flow passage (1211), the second heat transfer element (122) is provided with a second flow passage (1221), the first flow passage (1211) is communicated with the second flow passage (1221), and the heating element (123) is used for heating liquid in the first flow passage (1211) and/or the second flow passage (1221).

2. The liquid heating apparatus according to claim 1, wherein an accommodating chamber (124) is formed between the first heat transfer member (121) and the second heat transfer member (122), the heating member (123) includes a heating portion (1231) and a conductive portion (1232) connected to each other, the heating portion (1231) is accommodated in the accommodating chamber (124), and the conductive portion (1232) protrudes out of the accommodating chamber (124).

3. The liquid heating apparatus according to claim 2, wherein a gap (125) is formed between a peripheral wall of the heating portion (1231) and an inner wall of the accommodating chamber (124).

4. A liquid heating device according to any one of claims 1-3, characterized in that the liquid heating device (12) further comprises an insulated first heat conducting member (126) and/or an insulated second heat conducting member (127);

the first heat transfer member (126) is padded between the first heat transfer member (121) and the heating member (123), and/or the second heat transfer member (127) is padded between the second heat transfer member (122) and the heating member (123).

5. A liquid heating device according to any one of claims 1-3, wherein the first heat transfer member (121) is provided with a first liquid inlet (1212) communicating with the first flow passage (1211) and a first liquid outlet (1213) communicating with the first flow passage (1211), and the second heat transfer member (122) is provided with a second liquid inlet (1222) communicating with the second flow passage (1221) and a second liquid outlet (1223) communicating with the second flow passage (1221), wherein the second liquid outlet (1223) communicates with the first liquid inlet (1212).

6. Liquid heating device according to claim 5, characterized in that the liquid heating device (12) further comprises a first temperature sensor (131), a second temperature sensor (132) and a controller (133), the first temperature sensor (131) is installed at the first liquid outlet (1213), and outputs a first signal indicative of the temperature of the liquid output from said first liquid outlet (1213), the second temperature sensor (132) is mounted at the second inlet port (1222), and outputs a second signal indicative of the temperature of the liquid input from said second input port (1222), the controller (133) is electrically connected to the first temperature sensor (131), the second temperature sensor (132) and the heating member (123) at the same time, the controller (133) is configured to control the heating element (123) in response to the first signal and the second signal.

7. A liquid heating apparatus according to any one of claims 1-3, wherein the liquid heating apparatus (12) further comprises a temperature control switch (134), the temperature control switch (134) is electrically connected to the heating member (123), the temperature control switch (134) is configured to obtain a surface temperature of the first heat transfer member (121) or the second heat transfer member (122), and control the heating member (123) to stop heating when the surface temperature is higher than a preset value.

8. The liquid heating device according to claim 7, wherein the first heat transfer member (121) is provided with a clamping groove (1214), the liquid heating device (12) further comprises an insulating sleeve (135), the insulating sleeve (135) is clamped in the clamping groove (1214), and the temperature-controlled switch (134) is sleeved in the insulating sleeve (135).

9. A liquid heating device according to any one of claims 1-3, characterized in that the liquid heating device (12) further comprises a sealing gasket (136), the sealing gasket (136) is padded between the first heat transfer element (121) and the second heat transfer element (122), and the sealing gasket (136) is provided with an avoidance hole (1361) for avoiding the heating element (123).

10. A liquid heating device according to any one of claims 1-3, wherein the first flow channel (1211) and the second flow channel (1221) extend meandering or spirally.

11. A liquid heating device as claimed in any one of claims 1 to 3, characterized in that the liquid heating device (12) further comprises a first cover plate (137) and a first sealing ring (138), the first cover plate (137) is arranged on the side of the first heat transfer element (121) away from the second heat transfer element (122), and the first sealing ring (138) is arranged between the first cover plate (137) and the first heat transfer element (121).

12. A liquid heating device as claimed in any one of claims 1-3, characterized in that the liquid heating device (12) further comprises a second cover plate (139) and a second sealing ring (140), the second cover plate (139) covering the side of the second heat transfer element (122) remote from the first heat transfer element (121), and the second sealing ring (140) being arranged between the second cover plate (139) and the second heat transfer element (122).

13. A liquid heating system, comprising a power source (11) and a liquid heating apparatus (12) as claimed in any of claims 1 to 12, the output of the power source (11) being electrically connected to the heating element (123).

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