Pump

Abstract

The utility model discloses a pump which comprises a pump shell, the pump shell is provided with a pump cavity, the pump comprises a heating device, at least part of the heating device is located in the pump cavity, the heating device is provided with a fluid channel, the pump shell is provided with an inlet end channel and an outlet end channel which can communicate with the fluid channel, and the pump comprises a first temperature measuring unit. A temperature sensing probe of the first temperature measuring unit is located in the fluid channel or the water outlet end channel. According to the pump, the temperature value of the heated fluid in the fluid channel or the outlet end channel can be directly detected, and then the temperature of the heated fluid in the pump device can be accurately detected.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid transportation, in particular to a pump. Background Art

[0002] A pump is a machine that transports fluid or pressurizes fluid, and is widely used in production and life. With the needs of production and life, the pump device of the related technology is combined with a heater to heat the fluid flowing through it. How to accurately detect the temperature of the heated fluid in the pump device is an issue that technicians in the pump field need to consider. Utility Model Content

[0003] The purpose of the utility model is to at least solve the problems in the background technology and to provide a pump.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A pump comprises a pump casing having a pump cavity, the pump comprising a heating device, at least part of the heating device being located in the pump cavity, the heating device having a fluid channel, the pump casing being provided with an inlet end channel and an outlet end channel capable of communicating with the fluid channel, the pump comprising a first temperature measuring unit, a temperature sensing probe of the first temperature measuring unit being located in the fluid channel or the water outlet end channel.

[0006] In the pump of the above technical solution, the temperature sensing probe of the first temperature measuring unit is located in the fluid channel or the outlet channel, so that the temperature value of the heated fluid in the fluid channel or the outlet channel can be directly detected, and the temperature of the heated fluid in the pump device can be accurately detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0008] Figure 1 A schematic diagram of the explosion structure of a pump according to an embodiment;

[0009] Figure 2 A schematic diagram of the structure of a pump according to an embodiment;

[0010] Figure 3 A schematic diagram of the cross-sectional structure of a pump according to an example;

[0011] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0012] Figure 5 is a schematic structural diagram of a heating device according to an embodiment;

[0013] Figure 6A schematic diagram of an exploded structure of a heating device according to an embodiment;

[0014] Figure 7 A schematic diagram of a partial cross-sectional structure of a heating device according to an embodiment;

[0015] Figure 8 A schematic diagram showing a minimum spacing D and a partial cross-sectional view of a sealant structure in an embodiment;

[0016] Fig. 9 A schematic diagram of a partial cross-sectional structure showing a heat insulation board and a socket position structure according to an embodiment;

[0017] Fig.10 A schematic diagram showing the structure of the mounting portion in another embodiment;

[0018] Fig.11 A schematic structural diagram showing a cross section of a pump casing in one embodiment;

[0019] Fig.12 A schematic diagram of the structure of a pump according to another embodiment;

[0020] Fig.13 This is a schematic structural diagram showing a cross section of a pump casing in another embodiment.

[0021] Reference numerals:

[0022] 1. Pump; 11. Pump housing; 110. Pump chamber; 111. Upper housing; 1110. First mounting groove; 112. Lower housing; 1121. Step portion; 11211. Step surface portion; 11212. Step wall; 113. Inlet channel; 114. Outlet channel; 12. Heating device; 120. Heating tube; 121. Tube base; 1211. Second mounting hole; 122. Heating film; 123. Fluid channel; 124. Socket; 1241. Power connection portion; 125. Mounting portion; 1251. First mounting hole; 1252, main body; 1253, positioning part; 126, first sealing ring; 127, sealant; 128, second sealing ring; 130, connecting wire; 131, first temperature measuring unit; 132, second temperature measuring unit; 14, third sealing ring; 15, fourth sealing ring; 16, heat insulation cover; 17, impeller; 18, rotating shaft; 19, stator; 10, stator housing; 100, convex ring; 1001, third mounting hole; 101, main body; 103, water inlet end; 104, water outlet end; 105, heat insulation board. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Other technical solutions obtained by those skilled in the art without making creative work belong to the protection scope of the utility model. In addition, it should be understood that the following words such as "upper", "lower", "left", "right", "longitudinal", "lateral", "inside", "outside", "vertical", "horizontal", "top", "bottom" and so on indicating the orientation or position relationship are only based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0024] like Figure 1-Figure 11 As shown, a pump 1 of an embodiment includes a pump housing 11, the pump housing 11 has a pump chamber 110, the pump includes a heating device 12, at least part of the heating device 12 is located in the pump chamber 110, the heating device 12 has a fluid channel 123, the pump housing 11 is provided with an inlet channel 113 and an outlet channel 114 which can be connected to the fluid channel 123, the pump 1 includes a first temperature measuring unit 131, and the temperature sensing probe of the first temperature measuring unit 131 is located in the fluid channel 123.

[0025] The fluid flows from the inlet channel 113 to the fluid channel 123. The fluid in the fluid channel 123 is heated by the heating device 12 and its temperature rises. The temperature sensing probe inserted into the fluid channel 123 can directly contact the heated fluid, and then accurately detect the fluid temperature to meet the needs of detecting specific pump output temperatures in some usage scenarios. For example, in some dishwashers, dishwashing liquid has a better cleaning effect at a specific temperature. When the first temperature measuring unit 131 detects that the reached temperature value meets the requirement, the dishwasher has a better cleaning effect. If the required temperature value is not met, it may cause the dishwasher to have a relatively poor cleaning effect. The output of the heating device 12 can be controlled by a thermostat or the like to adjust the temperature value of the fluid. For another example, in some washing machines, laundry detergent or laundry powder has a better cleaning effect at a specific temperature.

[0026] The impeller 17, the stator 19, the rotating shaft 18 and the stator housing 20 of the pump 1 can adopt conventional technologies in the field, and those skilled in the art can configure them by themselves, which will not be described in detail.

[0027] In one embodiment, Figure 5-Figure 7As shown, the heating device 12 includes a heating tube 120 located in the pump chamber 110 and a socket 124 arranged on the outer wall of the heating tube 120. The heating tube 120 includes a tube base 121 and a heating film 122 arranged on the outer wall of the tube base 121. The socket 124 has an electrical connection portion 1241 electrically connected to the heating film 122. The heating tube 120 has a fluid channel 123. The heating device 12 includes a mounting portion 125. The mounting portion 125 is integral with the socket 124 or fixedly mounted. The first temperature measuring unit 131 is installed on the mounting portion 125 and the temperature sensing probe of the first temperature measuring unit 131 is located in the fluid channel 123.

[0028] The heating film 122 can be a thick film or a thin film, and has a heating resistor inside. The heating film 122 can be disposed on the outer wall of the tube substrate 121 by spraying or coating. In one embodiment, the heating film 122 is disposed on a portion of the outer wall of the tube substrate 121, the power connection portion 1241 of the socket 124 is welded and fixed to the tube substrate 121, and the power connection portion 1241 of the socket 124 is electrically connected to the electrode of the heating film 122 by soldering or other means. Of course, the socket 124 can also be installed with the tube substrate 121 by other conventional means in the art such as a buckle or a support, and the external wire can be inserted into the socket 124 through a plug to realize power supply to the heating device 12. In other embodiments, the power connection part 1241 of the socket 124 is fixed on the heating film 122 and is electrically connected to the electrodes of the heating film 122 by soldering or the like. At this time, the power connection part 1241 of the socket 124 and the heating resistor of the heating film 122 are fixed and insulated by gluing or the like to avoid a short circuit in the heating resistor, and only the power connection part 1241 of the socket 124 is electrically connected to the electrodes of the heating film 122. Of course, in other embodiments, the heating film 122 may also cover the entire outer wall of the tube base 121, or the heating film 122 may also leave an installation area where no heating resistor is set for the power connection part 1241 of the socket 124 to be installed.

[0029] The tube base 121 is a cylindrical body formed by stretching metal, and its wall thickness is relatively thin, making it difficult to directly fix the temperature sensing probe into the first temperature measuring unit 131 of the fluid channel 123. Therefore, the first temperature measuring unit 131 is installed on the mounting portion 125 to facilitate the fixed installation of the first temperature measuring unit 131 and to ensure that the temperature sensing probe of the first temperature measuring unit 131 can be extended into the fluid channel 123.

[0030] The mounting portion 125 and the socket 124 may be integrally formed, or may be fixedly installed by gluing or snapping. Preferably, the mounting portion 125 and the socket 124 are integrally formed, which is convenient for manufacturing and production and has low cost.

[0031] In one embodiment, Figure 5As shown, the mounting portion 125 has a first mounting hole 1251, the heating tube 120 has a second mounting hole 1211, the first mounting hole 1251 is opposite to at least a portion of the second mounting hole 1211, a portion of the first temperature measuring unit 131 is located in the first mounting hole 1251, a portion of the first temperature measuring unit 131 is located in the second mounting hole 1211, and the temperature sensing probe of the first temperature measuring unit 131 is located in the fluid channel 123.

[0032] During installation, the temperature sensing probe of the first temperature measuring unit 131 passes through the first mounting hole 1251 and the second mounting hole 1211 in sequence, and is finally located in the fluid channel 123, while at least part of the shell of the first temperature measuring unit 131 is located in the first mounting hole 1251 and can be fixedly installed by gluing or the like.

[0033] In one embodiment, the tube base 121 is formed by a rolling process, and then a heating film 122 is arranged on the outer wall of the tube base 121 to form a heating tube 120. The overall thickness of the heating tube 120 is relatively thin. If a hole is directly opened in the heating tube 120 and the first temperature measuring unit 131 is installed on the outer wall of the heating tube 120, it is difficult to fix or the fixation is unstable. Therefore, the first temperature measuring unit 131 is firmly fixed by the mounting portion 125; further, the mounting portion 125 and the socket 124 are integrally formed to facilitate production and manufacturing. The mounting portion 125 can be fixed by fixing the socket 124 to the heating tube 120.

[0034] In one embodiment, the mounting portion 125 is located on the outside of the heating tube 120, and the heating device 12 includes a first sealing ring 126, at least a portion of the first sealing ring 126 surrounds the hole side wall corresponding to the second mounting hole 1211, and at least a portion of the first sealing ring 126 is located between the hole side wall corresponding to the second mounting hole 1211 and the outer surface portion of the first temperature measuring unit 131.

[0035] Furthermore, if Figure 6 As shown, the first sealing ring 126 is annular, and its outer wall has an annular snap-in groove, which is used to be installed on the side wall of the hole corresponding to the second mounting hole 1211, and the outer wall of the first sealing ring 126 and the side wall of the hole corresponding to the second mounting hole 1211 are in close contact with and sealed; part of the outer wall of the first temperature measuring unit 131 is in close contact with the annular inner wall of the first sealing ring 126 and sealed, and then the first sealing ring 126 is used to achieve sealing between the first temperature measuring unit 131 and the second mounting hole 1211 to prevent fluid leakage.

[0036] During installation, first install the first sealing ring 126 in the second mounting hole 1211, place or install the first temperature measuring unit 131 in the first mounting hole 1251, move the first temperature measuring unit 131 and the socket 124 as a whole and extend part of the first temperature measuring unit 131 into the second mounting hole 1211. At this time, the positioning of the socket 124 is also completed. Finally, the power connection part 1241 of the socket 124 is electrically connected to the electrode of the heating film 122.

[0037] In another embodiment, Fig.10 As shown, the mounting portion 125 has a main body portion 1252 and a positioning portion 1253, the first mounting hole 1251 passes through the main body portion 1252 and the positioning portion 1253, at least a portion of the positioning portion 1253 is located in the second mounting hole 1211, and the heating device 12 includes a second sealing ring 128, and at least a portion of the second sealing ring 128 is located between the positioning portion 1253 and the side wall of the hole corresponding to the second mounting hole 1211.

[0038] The diameter of the positioning portion 1253 is smaller than that of the body portion 1252, and the diameter of the body portion 1252 is larger than that of the second mounting hole 1211, so as to limit the installation of the positioning portion 1253 and the second mounting hole 1211. The positioning portion 1253 is installed in the second mounting hole 1211 to achieve that at least part of the first mounting hole 1251 and the second mounting hole 1211 are opposite, and then the first temperature measuring unit 131 is inserted into the first mounting hole 1251 and the second mounting hole 1211.

[0039] The first mounting hole 1251 passes through the main body and the positioning portion 1253. During installation, the second sealing ring 128 is installed in the second mounting hole 1211. The structure of the second sealing ring 128 can be similar to that of the first sealing ring 126. Then, the positioning portion 1253 of the mounting portion 125 is inserted into the second mounting hole 1211 and sealed with the inner wall of the second sealing ring 128. Then, the first temperature measuring unit 131 is installed in the first mounting hole 1251 and its temperature sensing probe passes through the second mounting hole 1211 and extends into the fluid channel 123. In this embodiment, the mounting portion 125 and the first temperature measuring unit 131 are installed in conjunction with the second mounting hole 1211 in sequence, and the installation is more convenient.

[0040] In one embodiment, Figure 8 , Fig. 9As shown, along the axial direction of the first mounting hole 1251, the first temperature measuring unit 131 is recessed in the first mounting hole 1251 of the mounting portion 125, and the heating device 12 includes a sealant 127, and the sealant 127 fills the portion of the first mounting hole 1251 located above the first temperature measuring unit 131. It can be understood that the first temperature measuring unit 131 is electrically connected to the power connection portion of the socket 124 through the connecting wire 130, and a portion of the connecting wire 130 is recessed in the mounting portion 125 along with the first temperature measuring unit 131, and then sealed by the sealant 127, and another portion of the connecting wire 130 extends out of the sealant 127 and is electrically connected to the power connection portion of the socket 124. In one embodiment, the socket 124 has at least two power connections for electrical connection with different components, such as the first temperature measuring unit 131 and the heating film 122 are electrically connected to two power connections respectively. Of course, in other embodiments, the socket 124 has one power connection portion, and different components are electrically connected to one power connection portion.

[0041] The first temperature measuring unit 131 is recessed in the first mounting hole 1251 of the mounting portion 125, so that a glue injection groove is formed between the end of the first temperature measuring unit 131 and the inner wall corresponding to the portion of the first mounting hole 1251 located above the end, so as to facilitate the filling of the sealant 127. On the one hand, the first temperature measuring unit 131 is glued and fixed to the mounting portion 125 by the sealant 127, and on the other hand, the sealant 127 fills the portion of the first mounting hole 1251 located above the first temperature measuring unit 131 to ensure the sealing between the first temperature measuring unit 131 and the mounting portion 125.

[0042] In one embodiment, Figure 8 As shown, there is a minimum distance D between the bottom end of the socket 124 and the outer wall of the heating tube 120, and the minimum distance D satisfies: D≥0.5mm.

[0043] In one embodiment, the socket 124 is made of plastic, and there is a minimum distance D between the bottom end of the socket 124 and the outer wall of the heating tube 120, so that the heat of the heating tube 120 will not be transferred to the base of the socket 124 through direct contact. The minimum distance D of not less than 0.5 mm further maintains a certain safe thermal insulation distance between the socket 124 and the heating tube 120, thereby reducing damage caused by excessive temperature such as heat softening and deformation of the socket 124.

[0044] In one embodiment, Fig. 9 As shown, the pump 1 includes a heat insulation board 105, which is located between the bottom end of the socket 124 and the outer wall of the heating tube 120. The heat insulation board 105 can be fixed to the bottom end of the socket 124 by gluing, welding, or plugging. The heat insulation board 105 can be made of heat insulation materials such as glass fiber, rock wool, vacuum board, or aerogel felt. The heat insulation board 105 further increases the heat insulation effect of the socket 124 and the heating tube 120.

[0045] In one embodiment, Figure 1 , Figure 3 As shown, the pump 1 includes a heat insulation cover 16, at least part of which is located between the heating device 12 and the inner wall of the pump housing 11. The heat insulation cover 16 can be made of heat insulation materials such as glass fiber, rock wool, vacuum board, or aerogel felt. On the one hand, the heat insulation cover 16 reduces the heat transfer to the pump housing 11, reduces the probability of the plastic pump housing 11 softening and deforming due to heat, and reduces the probability of personnel being burned by contacting the pump housing 11 due to maintenance or other reasons. On the other hand, the heat insulation cover 16 blocks the heat inside it, reduces the heat diffusion, and thus increases the heating efficiency of the fluid.

[0046] In one embodiment, Figure 5 As shown, the pump 1 includes a second temperature measuring unit 132, and the temperature sensing probe of the second temperature measuring unit 132 is in direct contact with the heating device 12 or in indirect heat conduction contact, and is used to detect the heating temperature of the heating device 12. The first temperature measuring unit 131 and the second temperature measuring unit 132 respectively detect the temperature value of the fluid and the temperature of the heating tube 120. The first temperature measuring unit 131 can be a temperature sensor, which has a temperature sensing probe extending into the fluid channel 123, and the second temperature measuring unit 132 can be a thermistor arranged on the outer wall of the heating tube 120, which directly detects the temperature of the heating tube 120. The first temperature measuring unit 131 and the second temperature measuring unit 132 can also timely detect the dry burning of the heating tube 120. When there is less fluid or even no fluid in the fluid channel 123, the first temperature measuring unit 131 is not in contact with the fluid but is directly located in the air. Since the heat transfer performance of fluids such as water is better than that of air, the temperature detection value of the first temperature measuring unit 131 at this time is less than the temperature detection value when it is normally in contact with fluids such as water. Since the heat of the heating tube 120 is difficult to be transferred or difficult to be taken away by the fluid, the heating tube 120 accumulates heat, so that the temperature detected by the second temperature measuring unit 132 is higher than the detection value of the second temperature measuring unit 132 under normal working conditions. Therefore, the first temperature measuring unit 131 and the second temperature measuring unit 132 can accurately determine whether the heating tube 120 is in a dry burning state, thereby reducing misjudgment, and can timely control the power supply to the heating tube 120 in a dry burning state through devices such as a thermostat, thereby protecting the heating tube 120.

[0047] In one embodiment, Figure 1 , Fig.11As shown, the pump 1 includes a third sealing ring 14 and a fourth sealing ring 15, the inner wall of one end of the pump housing 11 has a first mounting groove 1111, at least part of the third sealing ring 14 is located in the first mounting groove 1111, at least part of the third sealing ring 14 surrounds one end of the heating device 12, the inner wall of the pump housing 11 has a step portion 1121, at least part of the heating device 12 is located between the step surface portion 11211 corresponding to the step portion 1121 and the third sealing ring 14, and at least part of the fourth sealing ring 15 surrounds the other end of the heating device 12.

[0048] Further, the third sealing ring 14 has a second mounting groove, one end of the heating device 12 is located in the second mounting groove, and the heating device 12 is located between the third sealing ring 14 and the step surface 11211 corresponding to the step portion 1121 and is axially limited by it. The step portion 1121 has a step wall 11212 adjacent to the step surface 11211, and the step wall 11212 and the step surface 11211 have an angle to form the step portion 1121. At least part of the fourth sealing ring 15 surrounds the other end of the heating device 12 and is located between the heating device 12 and the step wall 11212, on the one hand to increase the matching sealing performance between the heating device 12 and the step portion 1121, and on the other hand to achieve radial limitation of the heating device 12, to prevent damage or reduced sealing performance caused by radial displacement or shaking of the heating device 12. The installation, fixation and sealing of the heating device 12 are achieved by the third sealing ring 14, the step portion 1121 and the fourth sealing ring 15.

[0049] In one embodiment, Figure 1 , Figure 3 , Figure 4 , Fig.11 As shown, the heat shield 16 is located between one end of the pump housing 11 and the step portion 1121 and is axially limited by the step portion 1121. The heat shield 16 is sleeved on the outer wall of the heating device 12. The fourth sealing ring 15 is located between the heating device 12 and the heat shield 16. The step wall 11212 is located outside a portion of the outer wall of the heat shield 16 to limit its radial position. In other embodiments, the heat shield 16 may also be located between the third sealing ring 14 and the fourth sealing ring 15.

[0050] In one embodiment, Fig.11 As shown, the pump housing 11 includes an upper housing 111 and a lower housing 112 , the upper housing 111 and the lower housing 112 are fixedly installed, the heating device 12 is installed in the inner cavity corresponding to the upper housing 111 , and the stator housing 10 of the pump 1 is fixedly installed with the lower housing 112 .

[0051] In one embodiment, Figure 3 , Fig.11As shown, the inlet end channel 113 of the pump 1 includes the channel corresponding to the water inlet pipe of the pump 1, or also includes one end of the pump casing 11 connected to the water inlet pipe, that is, the inner cavity corresponding to the water inlet end 103; the outlet end channel 114 of the pump 1 includes the channel corresponding to the water outlet pipe of the pump 1 and one end of the pump casing 11 connected to the water outlet pipe, that is, the inner cavity corresponding to the water outlet end 104.

[0052] like Fig.12 , Fig.13 As shown, different from another embodiment in which the temperature sensing probe of the first temperature measuring unit 131 is located in the fluid channel 123, the temperature sensing probe of the first temperature measuring unit 131 is located in the outlet channel 114. Further, the pump housing 11 includes a main body 101 and a convex ring 100, the main body 101 and the convex ring 100 are integrally or fixedly installed, the main body 101 has a water inlet end 103 and a water outlet end 104, the convex ring 100 is located at the water outlet end 104, the water outlet end 104 has an outlet channel 114, the first temperature measuring unit 131 is installed on the convex ring 100 and the temperature sensing probe of the first temperature measuring unit 131 is located in the outlet channel 114.

[0053] Further, the main body 101 and the convex ring 100 are integrally formed, the convex ring 100 has a third mounting hole 1001 located in its inner circle, at least part of the first temperature measuring unit 131 extends into the third mounting hole 1001 and its temperature sensing probe is located in the outlet channel 114, and the first temperature measuring unit 131 can be fixed to the third mounting hole by gluing or other means. Further, the first temperature measuring unit 131 is recessed in the third mounting hole 1001 of the convex ring 100, and the portion of the third mounting hole 1001 located above the first temperature measuring unit 131 is filled with a sealant 127.

[0054] The above are only typical specific implementation methods of the utility model, but the protection scope of the utility model is not limited to them. Any technical solution, concept, and design obtained by equivalent replacement or change based on the technical solution and utility model concept of the utility model within the technical scope disclosed by any technician familiar with the technical field should be covered by the protection scope of the utility model.

Claims

1. A pump, characterized in that: The pump (1) comprises a pump housing (11), wherein the pump housing (11) has a pump cavity (110); the pump (1) comprises a heating device (12), wherein at least a portion of the heating device (12) is located in the pump cavity (110); the heating device (12) has a fluid channel (123); the pump housing (11) is provided with an inlet channel (113) and an outlet channel (114) which can be communicated with the fluid channel (123); the pump (1) comprises a first temperature measuring unit (131); a temperature sensing probe of the first temperature measuring unit (131) is located in the fluid channel (123) or the outlet channel (114); and the temperature sensing probe of the first temperature measuring unit (131) can be in contact with the fluid flowing through the pump.

2. The pump according to claim 1, characterized in that The heating device (12) comprises a heating tube (120) located in the pump chamber (110) and a socket (124) arranged on the outer wall of the heating tube (120); the heating tube (120) comprises a tube base (121) and a heating film (122) arranged on at least part of the outer wall of the tube base (121); the socket (124) has an electrical connection portion (1241) electrically connected to the heating film (122); the heating tube (120) has the fluid channel (123); the heating device (12) comprises a mounting portion (125); the mounting portion (125) and the socket (124) are integrally or fixedly mounted; the first temperature measuring unit (131) is mounted on the mounting portion (125) and the temperature sensing probe of the first temperature measuring unit (131) is located in the fluid channel (123).

3. The pump according to claim 2, characterized in that The mounting portion (125) has a first mounting hole (1251), the heating tube (120) has a second mounting hole (1211), the first mounting hole (1251) is at least partially opposite to the second mounting hole (1211), a portion of the first temperature measuring unit (131) is located in the first mounting hole (1251), another portion of the first temperature measuring unit (131) is located in the second mounting hole (1211), and a temperature sensing probe of the first temperature measuring unit (131) is located in the fluid channel (123).

4. The pump according to claim 3, characterized in that The mounting portion (125) is located on the outer side of the heating tube (120), and the heating device (12) includes a first sealing ring (126), at least a portion of the first sealing ring (126) surrounds the hole side wall corresponding to the second mounting hole (1211), and at least a portion of the first sealing ring (126) is located between the hole side wall corresponding to the second mounting hole (1211) and the outer surface portion of the first temperature measuring unit (131); or, the mounting portion (125) has a main body portion (1252) and a positioning portion (1253), the first mounting hole (1251) passes through the main body portion (1252) and the positioning portion (1253), and at least a portion of the positioning portion (1253) is located in the second mounting hole (1211), and the heating device (12) includes a second sealing ring (128), and at least a portion of the second sealing ring (128) is located between the positioning portion (1253) and the hole side wall corresponding to the second mounting hole (1211).

5. The pump according to claim 3 or 4, characterized in that Along the axial direction of the first mounting hole (1251), the upper end of the first temperature measuring unit (131) is recessed in the first mounting hole (1251) of the mounting portion (125), and the heating device (12) comprises a sealant (127), and the sealant (127) fills a portion of the first mounting hole (1251) located above the first temperature measuring unit (131).

6. The pump according to claim 2, 3 or 4, characterized in that: There is a minimum distance D between the bottom end of the socket (124) and the outer wall of the heating tube (120), and the minimum distance D satisfies: D ≥ 0.5 mm; and\or, the power connection part (1241) is welded and fixed to the tube base (121) and electrically connected to the heating film (122), or the power connection part (1241) is fixed and electrically connected to the heating film (122).

7. The pump according to claim 5, characterized in that The pump (1) comprises a heat insulation board (105), wherein the heat insulation board (105) is located between the bottom end of the socket (124) and the outer wall of the heating tube (120).

8. The pump according to claim 1, characterized in that The heating device (12) comprises a heating tube (120) located in the pump chamber (110), and a socket (124) arranged on the outer wall of the heating tube (120); the heating tube (120) comprises a tube base (121) and a heating film (122) arranged on the outer wall of the tube base (121); the socket (124) has an electrical connection portion (1241) electrically connected to the heating film (122); the heating tube (120) has the fluid channel (123); and the pump housing (11) comprises a main body (101). The main body (101) is integrally or fixedly mounted with the convex ring part (100), the main body (101) has a water inlet end (103) and a water outlet end (104), the convex ring part (100) is located at the water outlet end (104), the water outlet end (104) has the outlet end channel (114), the first temperature measuring unit (131) is mounted on the convex ring part (100), and the temperature sensing probe of the first temperature measuring unit (131) is located at the outlet end channel (114).

9. The pump according to claim 1 or 2 or 3 or 4 or 7 or 8, characterized in that: The pump (1) comprises a second temperature measuring unit (132), wherein a temperature sensing probe of the second temperature measuring unit (132) is in direct contact or in indirect heat conduction contact with the heating device (12) and is used to detect the heating temperature of the heating device (12).

10. A pump according to claim 1 or 2 or 3 or 4 or 7 or 8, characterized in that The pump (1) comprises a third sealing ring (14) and a fourth sealing ring (15); an inner wall of one end of the pump housing (11) comprises a first mounting groove (1110); at least a portion of the third sealing ring (14) is located in the first mounting groove (1110); at least a portion of the third sealing ring (14) surrounds one end of the heating device (12); an inner wall of the pump housing (11) comprises a step portion (1121); at least a portion of the heating device (12) is located between a step surface portion (11211) corresponding to the step portion (1121) and the third sealing ring (14); and at least a portion of the fourth sealing ring (15) surrounds the other end of the heating device (12); And\or, the pump (1) comprises a heat insulation cover (16), at least part of which is located between the heating device (12) and the inner wall of the pump housing (11).

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