Current limiting mechanism and electrical oil heater

Abstract

The invention provides a current limiting mechanism and an electrical oil heater. The current limiting mechanism is applied to a tail heater piece set of the electrical oil heater. The flow limiting mechanism is arranged in the oil pocket and comprises an installation part and a flow limiting part, the mounting piece is connected with the front heater piece, so that the first end of the preset channel is communicated with the oil pocket communication port of the front heater piece; the second end of the preset channel is closed, a flow limiting hole is formed in the second end of the preset channel, and the flow limiting hole communicates with the preset channel and communicates with the cavity of the oil pocket; the flow limiting assembly is arranged at the flow limiting hole; the flow limiting assembly comprises two sealing pieces, and the two sealing pieces are located on the inner side and the outer side of the flow limiting hole correspondingly. And each sealing element is movably arranged so as to have a shielding state of shielding the flow limiting hole and an avoiding state of being far away from the flow limiting hole.

Description

Technical Field

[0001] The invention relates to the technical field of electric oil heaters, and in particular to a current limiting mechanism and an electric oil heater. Background Art

[0002] Oil heater is an electric heater with good heating effect and convenient heating.

[0003] The tail piece of the oil heater is a part that is easily touched by the human body and there is a risk of scalding the human body. Summary of the invention

[0004] The main purpose of the present invention is to provide a current limiting mechanism and an electric oil heater, so as to play a role of heat insulation and current limiting in the tail heater sheet group and to achieve an anti-scalding effect.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a flow limiting mechanism is provided, which is applied to the tail radiator plate group of the electric oil radiator, the tail radiator plate group includes a front radiator plate and a rear radiator plate, the front radiator plate and the rear radiator plate surround an oil bag and an oil guide channel; the flow limiting mechanism is arranged in the oil bag and includes: a mounting member, which has a preset channel; the mounting member is connected to the front radiator plate, so that the first end of the preset channel is connected to the oil bag connecting port of the front radiator plate; the second end of the preset channel is closed, and a limiting flow hole is arranged at the second end of the preset channel, the limiting flow hole is connected to the preset channel and is connected to the cavity of the oil bag; a flow limiting assembly is arranged at the flow limiting hole; the flow limiting assembly includes two seals, and the two seals are respectively located on the inner side and the outer side of the flow limiting hole; each seal can be movably arranged to have a blocking state of blocking the flow limiting hole and a yielding state away from the flow limiting hole.

[0006] Furthermore, the flow limiting assembly also includes: a connecting piece, which is fixedly inserted into the flow limiting hole and spaced apart from the hole wall of the flow limiting hole; and two sealing pieces are both sleeved on the connecting piece and movably arranged along the axial direction of the flow limiting hole.

[0007] Furthermore, the flow limiting assembly also includes: two elastic members, the two elastic members are respectively arranged in one-to-one correspondence with the two sealing members; each elastic member is located on a side of the corresponding sealing member away from the flow limiting hole; the elastic member has a first end and a second end that are relatively arranged along its elastic expansion and contraction direction; the elastic expansion and contraction direction of the elastic member is parallel to or the same as the axial direction of the flow limiting hole; the first end of the elastic member is fixedly connected to the connecting member, and the second end of the elastic member is connected to the corresponding seal.

[0008] Furthermore, the two seals are respectively a first seal and a second seal, the first seal is located on the inner side of the flow limiting hole, and the second seal is located on the outer side of the flow limiting hole; when the flow limiting assembly is in an initial state, the first seal is spaced apart from the inner end of the flow limiting hole, and the second seal is spaced apart from the outer end of the flow limiting hole, so that both seals are in a yielding state.

[0009] Furthermore, the elastic member is sleeved on the connecting member.

[0010] Furthermore, the elastic member is an elastic sleeve.

[0011] Furthermore, the flow limiting hole is arranged at the upper part of the mounting member.

[0012] Furthermore, the sealing member is a sealing sheet.

[0013] Furthermore, the connecting piece is a rod-shaped structure.

[0014] Furthermore, the oil bag communication port is connected to the first port of the preset channel, and the oil bag communication port is smaller than or equal to the first port of the preset channel.

[0015] Furthermore, along the axial direction of the preset channel, the mounting piece has a first end and a second end that are relatively arranged; the direction from the first end to the second end of the preset channel is the same as the direction from the first end to the second end of the mounting piece; the first end of the mounting piece is connected to the front pad, and the second end of the mounting piece is spaced apart from the rear pad.

[0016] Furthermore, the mounting member includes a first mounting portion and a second mounting portion, the preset channel includes a first channel section and a second channel section, the first channel section is arranged on the first mounting portion, and the second channel section is arranged on the second mounting portion; the first end of the first channel section is the first end of the preset channel, and the first mounting portion is connected to the front plate; the first mounting portion and the second mounting portion are connected so that the second end of the first channel section is connected to the first end of the second channel section; the second end of the second channel section is the second end of the preset channel.

[0017] Furthermore, the front and rear lining sheets form two oil bags, which are an upper oil bag and a lower oil bag respectively; a limited flow mechanism is arranged in at least one of the upper and lower oil bags.

[0018] According to another aspect of the present invention, an electric oil heater is provided, which includes the above-mentioned current limiting mechanism.

[0019] Furthermore, the rear radiator plate of the tail radiator plate group of the electric oil radiator includes an upper protrusion and a lower protrusion, the upper protrusion is used to form an upper oil bag, and the lower protrusion is used to form a lower oil bag; the protrusion height of the lower protrusion is smaller than the protrusion height of the upper protrusion.

[0020] The technical solution of the present invention is applied to the tail radiator of the electric oil radiator, and the current limiting mechanism is arranged in the oil bag. The current limiting mechanism includes a mounting member with a preset channel, the first end of the preset channel is open, the mounting member is connected to the front radiator, so that the first end of the preset channel is connected to the oil bag connecting port of the front radiator; the second end of the preset channel is closed, and a limited flow hole is arranged at the second end of the preset channel; the limited flow hole is connected to the preset channel, and the limited flow hole is connected to the cavity of the oil bag.

[0021] The flow limiting assembly is arranged at the flow limiting hole; the flow limiting assembly includes two sealing members, which are respectively arranged at the inner side and the outer side of the flow limiting hole. Each sealing member of the flow limiting assembly can be movably arranged to have a blocking state of blocking the flow limiting hole and a yielding state away from the flow limiting hole.

[0022] The current limiting mechanism of the present application is used to play a role of heat insulation and current limiting in the tail plate group; the current limiting mechanism can limit the flow of the heat transfer oil into the cavity of the oil bag, and can achieve the connection and disconnection between the preset channel and the cavity of the oil bag; by adjusting the amount of heat transfer oil in the cavity of the oil bag, the temperature rise of the rear plate can be adjusted. The rear plate is a part that is easily touched by the human body, and by setting a current limiting mechanism, it can play a scalding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 It shows a schematic structural diagram of the current limiting mechanism according to the present invention being arranged in the upper and lower oil bags of the tail plate group;

[0025] Figure 2 It shows a schematic structural diagram of the current limiting mechanism according to the present invention being arranged in the oil bag of the tail plate group;

[0026] Figure 3 A schematic diagram showing the matching structure of the current limiting component and the current limiting hole of the current limiting mechanism according to the present invention is shown;

[0027] Figure 4 It shows a schematic structural diagram of the rear Ting tablet of the tail Ting tablet group according to the present invention;

[0028] Figure 5 Shows Figure 4 A side view of the rear tablet of the tail tablet group;

[0029] Figure 6 A schematic structural diagram of a mounting member of a current limiting mechanism according to the present invention is shown;

[0030] Figure 7 A structural schematic diagram showing another perspective of the mounting member of the current limiting mechanism according to the present invention;

[0031] Figure 8 A schematic structural diagram of a current limiting component of a current limiting mechanism according to the present invention is shown;

[0032] Fig. 9 A schematic diagram of an exploded structure of a current limiting component of a current limiting mechanism according to the present invention is shown;

[0033] Fig.10 A structural schematic diagram from another perspective of the current limiting component of the current limiting mechanism according to the present invention is shown.

[0034] The above drawings include the following reference numerals:

[0035] 100. Current limiting mechanism;

[0036] 10. Mounting member; 101. First mounting portion; 102. Second mounting portion; 103. End cover portion; 11. Preset channel; 111. First channel section; 112. Second channel section; 12. Flow limiting hole;

[0037] 30. current limiting component; 31. sealing member; 311. first sealing member; 312. second sealing member; 313. through hole; 32. connecting member; 33. elastic member; 331. first elastic member; 332. second elastic member;

[0038] 200, tail pad group; 210, oil bag; 2101, upper oil bag; 2102, lower oil bag; 220, front pad; 2201, oil bag connecting port; 230, rear pad; 2301, upper protrusion; 2302, lower protrusion. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] The present invention provides a current limiting mechanism 100, please refer to Figures 1 to 10 The current limiting mechanism 100 is applied to the tail radiator plate group 200 of the electric oil radiator; the tail radiator plate group 200 includes a front radiator plate 220 and a rear radiator plate 230, and the rear radiator plate 230 is located on the outside of the front radiator plate 220; the front radiator plate 220 and the rear radiator plate 230 surround the oil bag 210 and the oil guide channel.

[0043] The flow limiting mechanism 100 is arranged in the oil bag 210. The flow limiting mechanism 100 includes a mounting member 10 having a preset channel 11, the first end of the preset channel 11 is open, the mounting member 10 is connected to the front sheet 220, so that the first end of the preset channel 11 is connected to the oil bag connecting port 2201 of the front sheet 220; the second end of the preset channel 11 is closed, and a flow limiting hole 12 is arranged at the second end of the preset channel 11; the flow limiting hole 12 is connected to the preset channel 11, and the flow limiting hole 12 is connected to the cavity of the oil bag 210.

[0044] The oil-heating radiator connected to the tail radiator sheet group 200 is the sub-tail radiator sheet group, and the oil bag connecting port 2201 of the front radiator sheet 220 of the tail radiator sheet group 200 is connected to the oil bag of the sub-tail radiator sheet group.

[0045] The flow limiting assembly 30 is arranged at the flow limiting hole 12; the flow limiting assembly 30 includes two seals 31, and the two seals 31 are respectively located on the inner side and the outer side of the flow limiting hole 12; the inner side of the flow limiting hole 12 refers to the side of the flow limiting hole 12 facing the preset channel 11; the outer side of the flow limiting hole 12 refers to the side of the flow limiting hole 12 away from the preset channel 11.

[0046] Along the axial direction of the flow limiting hole 12 , the flow limiting hole 12 has an inner end and an outer end that are arranged opposite to each other; the inner end of the flow limiting hole 12 is connected to the preset channel 11 , and the outer end of the flow limiting hole 12 is connected to the cavity of the oil bag 210 .

[0047] The oil in the oil bag of the secondary tail pad group can flow into the preset channel 11 through the oil bag connecting port 2201 of the front pad 220 of the tail pad group 200 and the first end of the preset channel 11, and then flow into the cavity of the oil bag 210 through the flow limiting hole 12, and then flow to the oil guide channel of the tail pad group 200, thereby driving the temperature rise of the rear pad 230.

[0048] It should be noted that the oil in the oil bag of the sub-rear shim group can only flow into the preset channel 11 through the oil bag connecting port 2201 and the first end of the preset channel 11, and then flow into the cavity of the oil bag 210 through the flow limiting hole 12; that is, the oil in the oil bag of the sub-rear shim group cannot directly enter the cavity of the oil bag 210 through the oil bag connecting port 2201. Optionally, the oil bag connecting port 2201 is connected to the first port of the preset channel 11, and the oil bag connecting port 2201 is smaller than or equal to the first port of the preset channel 11.

[0049] Each sealing member 31 of the flow limiting assembly 30 can be movably arranged to have a blocking state of blocking the flow limiting hole 12 and a yielding state of being away from the flow limiting hole 12 .

[0050] The two sealing members 31 are respectively a first sealing member 311 and a second sealing member 312 . The first sealing member 311 is located at the inner side of the flow limiting hole 12 , and the second sealing member 312 is located at the outer side of the flow limiting hole 12 .

[0051] When the first seal 311 contacts the inner end of the flow-limiting hole 12, the first seal 311 blocks the inner end of the flow-limiting hole 12, that is, the first seal 311 blocks the inner end of the flow-limiting hole 12, and the first seal 311 is in a blocking state; at this time, the oil in the preset channel 11 cannot flow into the flow-limiting hole 12 from the inner end of the flow-limiting hole 12, and further cannot flow into the cavity of the oil bag 210. When the first seal 311 is away from the inner end of the flow-limiting hole 12, the first seal 311 is spaced apart from the inner end of the flow-limiting hole 12, and the first seal 311 is in a yielding state; at this time, the oil in the preset channel 11 can flow into the flow-limiting hole 12 from the inner end of the flow-limiting hole 12, and further flow into the cavity of the oil bag 210.

[0052] When the second seal 312 contacts the outer end of the flow-limiting hole 12, the second seal 312 blocks the outer end of the flow-limiting hole 12, that is, the second seal 312 blocks the outer end of the flow-limiting hole 12, and the second seal 312 is in a blocking state; at this time, the oil in the cavity of the oil bag 210 cannot flow from the outer end of the flow-limiting hole 12 into the flow-limiting hole 12, and further cannot flow into the preset channel 11. When the second seal 312 is away from the outer end of the flow-limiting hole 12, the second seal 312 is spaced apart from the outer end of the flow-limiting hole 12, and the second seal 312 is in a yielding state; at this time, the oil in the cavity of the oil bag 210 can flow from the outer end of the flow-limiting hole 12 into the flow-limiting hole 12, and further flow into the preset channel 11.

[0053] In the present application, along the axial direction of the preset channel 11, the mounting member 10 has a first end and a second end that are arranged oppositely; the direction from the first end to the second end of the preset channel 11 is the same as the direction from the first end to the second end of the mounting member 10; the axial direction of the preset channel 11 is parallel to or the same as the distribution direction of the front and rear linings 220 and 230. The first end of the mounting member 10 is connected to the front lining 220 so that the first end of the preset channel 11 is connected to the oil bag connecting port 2201 of the front lining 220; the flow limiting hole 12 is arranged at the second end of the mounting member 10, and the second end of the mounting member 10 is spaced apart from the rear lining 230 so that the flow limiting hole 12 is connected to the space between the second end of the mounting member 10 and the rear lining 230, and further the flow limiting hole 12 is connected to the cavity of the oil bag 210.

[0054] By ensuring the distance between the second end of the mounting member 10 and the rear liner 230 , the normal temperature rise of the rear liner 230 is ensured.

[0055] Optionally, along the axial direction of the preset channel 11 , the height of the mounting member 10 is about 30 mm.

[0056] In the present application, the flow limiting assembly 30 further includes a connecting member 32, which is fixedly inserted into the flow limiting hole 12 and spaced apart from the hole wall of the flow limiting hole 12; two sealing members 31 are sleeved on the connecting member 32, and the two sealing members 31 are movably arranged along the axial direction of the flow limiting hole 12. Each sealing member 31 is moved along the axial direction of the flow limiting hole 12 to switch between its blocking state and its yielding state.

[0057] Since the connecting piece 32 is spaced apart from the hole wall of the flow limiting hole 12 , the oil flowing into the flow limiting hole 12 flows into the space between the connecting piece 32 and the hole wall of the flow limiting hole 12 to ensure the fluidity of the flow limiting hole 12 .

[0058] When the first seal 311 moves along the axial direction of the flow limiting hole 12 and in a direction close to the flow limiting hole 12, the distance between the first seal 311 and the inner end of the flow limiting hole 12 gradually decreases; when the first seal 311 moves along the axial direction of the flow limiting hole 12 and in a direction away from the flow limiting hole 12, the distance between the first seal 311 and the inner end of the flow limiting hole 12 gradually increases.

[0059] When the second seal 312 moves along the axial direction of the flow limiting hole 12 and in a direction close to the flow limiting hole 12, the distance between the second seal 312 and the outer end of the flow limiting hole 12 gradually decreases; when the second seal 312 moves along the axial direction of the flow limiting hole 12 and in a direction away from the flow limiting hole 12, the distance between the second seal 312 and the outer end of the flow limiting hole 12 gradually increases.

[0060] When the first seal 311 is in a yielding state, and when the distance between the first seal 311 and the inner end of the flow limiting hole 12 decreases, the amount of liquid flowing from the preset channel 11 into the flow limiting hole 12 and then into the cavity of the oil bag 210 decreases; when the first seal 311 is in a yielding state, and when the distance between the first seal 311 and the inner end of the flow limiting hole 12 increases, the amount of liquid flowing from the preset channel 11 into the flow limiting hole 12 and then into the cavity of the oil bag 210 increases.

[0061] When the second seal 312 is in a yielding state, and when the distance between the second seal 312 and the outer end of the flow limiting hole 12 decreases, the amount of liquid flowing from the cavity of the oil bag 210 into the flow limiting hole 12 and then into the preset channel 11 decreases; when the second seal 312 is in a yielding state, and when the distance between the second seal 312 and the outer end of the flow limiting hole 12 increases, the amount of liquid flowing from the cavity of the oil bag 210 into the flow limiting hole 12 and then into the preset channel 11 increases.

[0062] When the pressure in the preset channel 11 is greater than the pressure in the cavity of the oil bag 210, under the action of the pressure difference, the first sealing member 311 gradually approaches the inner end of the flow limiting hole 12 along the axial direction of the flow limiting hole 12 until it contacts the inner end of the flow limiting hole 12 and blocks the inner end of the flow limiting hole 12.

[0063] When the pressure in the cavity of the oil bag 210 is greater than the pressure in the preset channel 11, under the action of the pressure difference, the second sealing member 312 gradually approaches the outer end of the flow limiting hole 12 along the axial direction of the flow limiting hole 12 until it contacts the outer end of the flow limiting hole 12 and blocks the outer end of the flow limiting hole 12.

[0064] Optionally, the outer peripheral wall of the connecting member 32 is fixedly connected to the hole wall of the flow limiting hole 12, so that the connecting member 32 is fixedly arranged in the flow limiting hole 12. For example, the outer peripheral wall of the connecting member 32 is directly fixedly contacted with the hole wall of the flow limiting hole 12; or, the outer peripheral wall of the connecting member 32 is connected to the hole wall of the flow limiting hole 12 through an intermediate element, but the intermediate element does not affect the flowability of the flow limiting hole 12.

[0065] In the present application, the flow limiting assembly 30 further includes two elastic members 33 , which are respectively arranged in one-to-one correspondence with the two sealing members 31 ; along the axial direction of the flow limiting hole 12 , each elastic member 33 is located on the side of the corresponding sealing member 31 away from the flow limiting hole 12 .

[0066] The elastic member 33 has a first end and a second end that are oppositely arranged along its elastic expansion direction; the elastic expansion direction of the elastic member 33 is parallel to or the same as the axial direction of the flow limiting hole 12. The first end of the elastic member 33 is fixedly connected to the connecting member 32, and the second end of the elastic member 33 is connected to the corresponding sealing member 31.

[0067] Specifically, the two elastic parts 33 of the flow limiting assembly 30 are respectively a first elastic part 331 and a second elastic part 332; along the axial direction of the flow limiting hole 12, the first elastic part 331 is located on the side of the first seal 311 away from the flow limiting hole 12, and the second elastic part 332 is located on the side of the second seal 312 away from the flow limiting hole 12.

[0068] The first end of the first elastic member 331 is fixedly connected to the connecting member 32, and the second end of the first elastic member 331 is connected to the first sealing member 311; due to the elastic and telescopic properties of the first elastic member 331, the first sealing member 311 can realize axial movement along the flow limiting hole 12, and the elastic force of the first elastic member 331 can provide a certain power for the movement of the first sealing member 311.

[0069] The first end of the second elastic member 332 is fixedly connected to the connecting member 32, and the second end of the second elastic member 332 is connected to the second sealing member 312. Due to the elasticity of the second elastic member 332, the second sealing member 312 can move axially along the flow limiting hole 12, and the elastic force of the second elastic member 332 can provide a certain power for the movement of the second sealing member 312.

[0070] When the flow limiting assembly 30 is in the initial state, the first seal 311 is spaced apart from the inner end of the flow limiting hole 12, and the second seal 312 is spaced apart from the outer end of the flow limiting hole 12, so that both seals 31 are in a yielding state, and the inner and outer ends of the flow limiting hole 12 are in an open state.

[0071] When the pressure in the preset channel 11 is greater than the pressure in the cavity of the oil bag 210, and the pressure difference is greater than the elastic force of the first elastic member 331, the first sealing member 311 gradually approaches the inner end of the flow limiting hole 12 along the axial direction of the flow limiting hole 12 until it contacts the inner end of the flow limiting hole 12 and blocks the inner end of the flow limiting hole 12; when the pressure difference is less than the elastic force of the first elastic member 331 or the pressure difference disappears, under the elastic force of the first elastic member 331, the first sealing member 311 gradually moves away from the inner end of the flow limiting hole 12 along the axial direction of the flow limiting hole 12 to make way for the inner end of the flow limiting hole 12 and return to a making way state, so that the inner end of the flow limiting hole 12 returns to an open state.

[0072] When the pressure in the cavity of the oil bag 210 is greater than the pressure in the preset channel 11, and the pressure difference is greater than the elastic force of the second elastic member 332, the second sealing member 312 gradually approaches the outer end of the flow limiting hole 12 along the axial direction of the flow limiting hole 12 until it contacts the outer end of the flow limiting hole 12 and blocks the outer end of the flow limiting hole 12; when the pressure difference is less than the elastic force of the second elastic member 332 or the pressure difference disappears, under the elastic force of the second elastic member 332, the second sealing member 312 gradually moves away from the outer end of the flow limiting hole 12 along the axial direction of the flow limiting hole 12 to make way for the outer end of the flow limiting hole 12 and return to a making way state, so that the outer end of the flow limiting hole 12 returns to an open state.

[0073] When the electric oil heater is heating normally, the temperature of the heat transfer oil increases and gradually flows into the preset channel 11 through the oil bag connecting port 2201 of the tail heater group 200 and the first end of the preset channel 11; as the heat transfer oil in the preset channel 11 increases, the heat transfer oil in the preset channel 11 will flow into the cavity of the oil bag 210 through the flow limiting hole 12; as the temperature of the heat transfer oil increases, the pressure in the preset channel 11 is greater than the pressure in the cavity of the oil bag 210, and thus there is a pressure difference, and the first sealing member 311 gradually approaches the inner end of the flow limiting hole 12 along the axial direction of the flow limiting hole 12, and the distance between the first sealing member 311 and the inner end of the flow limiting hole 12 gradually decreases, from the preset channel 11 to the preset channel 11. 1, and then into the cavity of the oil bag 210. The amount of liquid gradually decreases; as the heat continues to increase and the amount of heat-conducting oil in the preset channel 11 increases, the pressure in the preset channel 11 further increases, and thus the first sealing member 311 is pushed to move further toward the flow-limiting hole 12 until the first sealing member 311 contacts the inner end of the flow-limiting hole 12, and the inner end of the flow-limiting hole 12 is blocked and closed, and the heat-conducting oil in the preset channel 11 can no longer enter the cavity of the oil bag 210. At this time, the heat is transferred to the rear sheet 230 by relying on the heat transfer between the front sheet 220 and the rear sheet 230, ensuring that the temperature rise of the rear sheet 230 meets the requirements.

[0074] When the electric oil heater is not heated, as the temperature of the heat transfer oil decreases, the pressure in the preset channel 11 decreases, and the first sealing member 311 gradually moves away from the flow limiting hole 12 along the axial direction of the flow limiting hole 12 to open the inner end of the flow limiting hole 12, so that the heat transfer oil in the preset channel 11 can enter the cavity of the oil bag 210, and the heat transfer oil in the cavity of the oil bag 210 can enter the preset channel 11, even the heat transfer oil on both sides of the flow limiting hole 12 can be circulated interchangeably to ensure the temperature of the rear heater plate 230 and realize heat exchange, thereby gradually becoming stable.

[0075] Based on the thermal expansion and contraction properties of the heat transfer oil, when the heat transfer oil is heated, its volume increases; when it is cooled, its volume decreases. When the electric oil heater is not heated, due to the small heat dissipation area of ​​the tail heater group 200, the heat transfer oil level in the tail heater group 200 drops slowly, making the liquid level in the tail heater group 200 larger than the liquid level in the second tail heater group, so the pressure in the cavity of the oil bag 210 is greater than the pressure in the preset channel 11.

[0076] The elastic member 33 can also serve as a stopper for the sealing member 31 , thereby ensuring that the sealing member 31 will not be separated from the connecting member 32 .

[0077] In the present application, the elastic member 33 is sleeved on the connecting member 32 .

[0078] Specifically, the elastic member 33 is an elastic sleeve.

[0079] Optionally, the elastic member 33 is an elastic rubber sleeve; for example, the elastic member 33 is a silicone sleeve.

[0080] In the present application, the sealing member 31 has a penetration hole 313 for the connecting member 32 to penetrate, that is, the sealing member 31 is sleeved on the connecting member 32 through the penetration hole 313 .

[0081] Optionally, the sealing member 31 is a sealing sheet. For example, the sealing member 31 is a sealing ring gasket.

[0082] In the present application, optionally, the connecting member 32 is a rod-shaped structure, and the axial direction of the connecting member 32 is parallel to or the same as the axial direction of the flow limiting hole 12 , that is, the sealing member 31 is movably arranged along the axial direction of the connecting member 32 .

[0083] In the present application, optionally, the flow restriction hole 12 is provided at the upper portion of the mounting member 10 to prevent excessive oil from entering the cavity of the oil bag 210 .

[0084] In the present application, the mounting member 10 includes a first mounting portion 101 and a second mounting portion 102 which are connected to each other; the preset channel 11 includes a first channel section 111 and a second channel section 112, the first channel section 111 is arranged on the first mounting portion 101, and the second channel section 112 is arranged on the second mounting portion 102; the first end of the first channel section 111 is the first end of the preset channel 11, and the first mounting portion 101 is connected to the front plate 220; the first mounting portion 101 and the second mounting portion 102 are connected so that the second end of the first channel section 111 is connected to the first end of the second channel section 112; the second end of the second channel section 112 is the second end of the preset channel 11.

[0085] Specifically, the second end of the first channel section 111 is connected to the first end of the second channel section 112 .

[0086] Specifically, along the axial direction of the preset channel 11, the first mounting portion 101 has a first end and a second end that are oppositely arranged, and the second mounting portion 102 has a first end and a second end that are oppositely arranged; the first end of the first mounting portion 101 is the first end of the mounting member 10; the second end of the first mounting portion 101 is connected to the first end of the second mounting portion 102, so that the second end of the first channel section 111 is connected to the first end of the second channel section 112; the second end of the second mounting portion 102 is the second end of the mounting member 10.

[0087] Optionally, the first mounting portion 101 and the second mounting portion 102 are welded; the first mounting portion 101 and the front sheet 220 are welded.

[0088] In the present application, the mounting member 10 includes an end cover portion 103 disposed at the second end of the preset channel 11 so as to close the second end of the preset channel 11 through the end cover portion 103 ; the flow limiting hole 12 is disposed on the end cover portion 103 .

[0089] Specifically, the second mounting portion 102 includes an end cover portion 103 , and the end cover portion 103 is a second end portion of the second mounting portion 102 .

[0090] Optionally, the flow limiting hole 12 is disposed on an upper portion of the end cover portion 103 .

[0091] In the present application, the front sheet 220 and the rear sheet 230 surround two oil bags 210 , and the two oil bags 210 are an upper oil bag 2101 and a lower oil bag 2102 .

[0092] Optionally, a flow limiting mechanism 100 is provided in the upper oil bag 2101 or the lower oil bag 2102 ; or, a flow limiting mechanism 100 is provided in both the upper oil bag 2101 and the lower oil bag 2102 .

[0093] In the present application, optionally, the outer diameter of the elastic sleeve is larger than the aperture of the flow limiting hole 12 , the aperture of the flow limiting hole 12 is larger than the aperture of the penetration hole 313 of the seal 31 , and the aperture of the penetration hole 313 of the seal 31 is larger than the diameter of the connector 32 .

[0094] Specifically, the hole wall of the elastic sleeve contacts the outer peripheral wall of the connecting member 32 , and the second end of the elastic sleeve is movably disposed relative to the outer peripheral wall of the connecting member 32 along the axial direction of the flow limiting hole 12 .

[0095] Specifically, the hole wall of the through hole 313 of the sealing member 31 contacts the outer peripheral wall of the connecting member 32, and the sealing member 31 is movably arranged along the axial direction of the flow limiting hole 12 relative to the outer peripheral wall of the connecting member 32; in this way, the shielding effect of the sealing member 31 on the flow limiting hole 12 can be ensured.

[0096] The present invention also provides an electric oil heater, such as Figures 1 to 10 As shown, it includes the above-mentioned current limiting mechanism 100.

[0097] Specifically, the electric oil heater includes one or two current limiting mechanisms 100 .

[0098] Specifically, the rear sheet 230 of the tail sheet group 200 includes an upper protrusion 2301 and a lower protrusion 2302, the upper protrusion 2301 is used to form an upper oil bag 2101, and the lower protrusion 2302 is used to form a lower oil bag 2102; the protrusion height of the lower protrusion 2302 is smaller than the protrusion height of the upper protrusion 2301.

[0099] During specific use, the tail radiator plate group 200 of the electric oil radiator is arranged close to the installation side wall, and the installation side wall is usually a plane; the upper protrusion 2301 of the rear radiator plate 230 contacts the installation side wall, and because the protrusion height of the lower protrusion 2302 is less than the protrusion height of the upper protrusion 2301, there must be a certain distance between the lower protrusion 2302 of the rear radiator plate 230 and the installation side wall, and the lower protrusion 2302 of the rear radiator plate 230 will not directly contact the installation side wall; in this way, the lower oil bag 2102 of the rear radiator plate 230 can only dissipate heat through radiation.

[0100] Optionally, the mounting side wall is a wall.

[0101] Safety standards require that the wall that the rear piece contacts does not exceed 90°C; by preventing the lower protrusion 2302 of the rear sheet 230 from directly contacting the installation side wall, heat transfer is reduced, ensuring that the installation side wall meets standard requirements.

[0102] It should be noted that the height difference between the protruding height of the lower protruding portion 2302 and the protruding height of the upper protruding portion 2301 should not be too large to avoid affecting the appearance.

[0103] Specifically, the first mounting portion 101 is arranged in the protrusion of the front sheet 220, and the second mounting portion 102 is arranged in the protrusion of the rear sheet 230. The protrusion of the front sheet 220 and the protrusion of the rear sheet 230 form an oil bag 210; the length of the first channel section 111 is greater than the length of the second channel section 112.

[0104] Specifically, along the axial direction of the preset channel 11, the height of the first mounting portion 101 is greater than the height of the second mounting portion 102, so that the length of the first channel section 111 is greater than the length of the second channel section 112. By reducing the height of the second mounting portion 102, the distance between the second end of the mounting member 10 and the rear shim 230 can be increased to ensure the normal temperature rise of the rear shim 230.

[0105] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0106] In the flow limiting mechanism 100 in the tail radiator set 200 applied to the electric oil radiator provided by the present invention, the flow limiting mechanism 100 is arranged in the oil bag 210. The flow limiting mechanism 100 includes a mounting member 10 having a preset channel 11, the first end of the preset channel 11 is open, the mounting member 10 is connected to the front radiator 220, so that the first end of the preset channel 11 is connected to the oil bag communication port 2201 of the front radiator 220; the second end of the preset channel 11 is closed, and the second end of the preset channel 11 is provided with a flow limiting hole 12; the flow limiting hole 12 is connected to the preset channel 11, and the flow limiting hole 12 is connected to the cavity of the oil bag 210.

[0107] The flow limiting assembly 30 is arranged at the flow limiting hole 12; the flow limiting assembly 30 includes two sealing members 31, which are respectively located at the inner side and the outer side of the flow limiting hole 12. Each sealing member 31 of the flow limiting assembly 30 can be movably arranged to have a blocking state of blocking the flow limiting hole 12 and a yielding state away from the flow limiting hole 12.

[0108] The flow limiting mechanism 100 of the present application is used to play a role of heat insulation and flow limiting in the tail insulation plate group 200; the flow limiting mechanism 100 can limit the flow of the heat transfer oil flowing into the cavity of the oil bag 210, and can realize the connection and disconnection between the preset channel 11 and the cavity of the oil bag 210; by adjusting the amount of heat transfer oil in the cavity of the oil bag 210, the temperature rise of the rear insulation plate 230 is adjusted.

[0109] The rear plate 230 is a part that is easily touched by the human body, and by providing the current limiting mechanism 100, an anti-scalding effect can be achieved.

[0110] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0111] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0112] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A current limiting mechanism, characterized in that: In a tail radiator sheet group (200) applied to an electric oil radiator, the tail radiator sheet group (200) comprises a front radiator sheet (220) and a rear radiator sheet (230), wherein the front radiator sheet (220) and the rear radiator sheet (230) enclose an oil bag (210) and an oil guide channel; the flow limiting mechanism is arranged in the oil bag (210) and comprises: The mounting member (10) has a preset channel (11); the mounting member (10) is connected to the front sheet (220) so that the first end of the preset channel (11) is in communication with the oil bag communication port (2201) of the front sheet (220); the second end of the preset channel (11) is closed, and a limiting flow hole (12) is provided at the second end of the preset channel (11), and the limiting flow hole (12) is in communication with the preset channel (11) and with the cavity of the oil bag (210); A flow limiting assembly (30) is arranged at the flow limiting hole (12); the flow limiting assembly (30) comprises two sealing members (31), the two sealing members (31) being respectively located at the inner side and the outer side of the flow limiting hole (12); each of the sealing members (31) can be movably arranged to have a blocking state of blocking the flow limiting hole (12) and a yielding state of being away from the flow limiting hole (12).

2. The current limiting mechanism according to claim 1, characterized in that: The current limiting component (30) further comprises: A connecting piece (32) is fixedly inserted into the flow limiting hole (12) and spaced apart from the hole wall of the flow limiting hole (12); the two sealing pieces (31) are both sleeved on the connecting piece (32) and movably arranged along the axial direction of the flow limiting hole (12).

3. The current limiting mechanism according to claim 2, characterized in that: The current limiting component (30) further comprises: Two elastic members (33), the two elastic members (33) being arranged in one-to-one correspondence with the two sealing members (31); each of the elastic members (33) is located on a side of the corresponding sealing member (31) away from the flow limiting hole (12); The elastic member (33) has a first end and a second end that are arranged opposite to each other along its elastic expansion and contraction direction; the elastic expansion and contraction direction of the elastic member (33) is parallel to or identical to the axial direction of the flow limiting hole (12); the first end of the elastic member (33) is fixedly connected to the connecting member (32), and the second end of the elastic member (33) is connected to the corresponding sealing member (31).

4. The current limiting mechanism according to claim 1, characterized in that: The two sealing members (31) are respectively a first sealing member (311) and a second sealing member (312); the first sealing member (311) is located on the inner side of the flow limiting hole (12), and the second sealing member (312) is located on the outer side of the flow limiting hole (12); When the flow limiting assembly (30) is in an initial state, the first sealing member (311) is spaced apart from the inner end of the flow limiting hole (12), and the second sealing member (312) is spaced apart from the outer end of the flow limiting hole (12), so that the two sealing members (31) are both in a yielding state.

5. The current limiting mechanism according to claim 3, characterized in that: The elastic member (33) is sleeved on the connecting member (32); and / or The elastic member (33) is an elastic sleeve.

6. The current limiting mechanism according to claim 1, characterized in that: The flow limiting hole (12) is arranged on the upper part of the mounting member (10); and / or The sealing member (31) is a sealing sheet; and / or The oil bag communication port (2201) is connected to the first port of the preset channel (11) by docking, and the oil bag communication port (2201) is smaller than or equal to the first port of the preset channel (11); and / or Along the axial direction of the preset channel (11), the mounting member (10) has a first end and a second end that are arranged opposite to each other; the direction from the first end to the second end of the preset channel (11) is the same as the direction from the first end to the second end of the mounting member (10); the first end of the mounting member (10) is connected to the front gasket (220), and the second end of the mounting member (10) is spaced apart from the rear gasket (230).

7. The current limiting mechanism according to claim 1, characterized in that: The mounting member (10) comprises a first mounting portion (101) and a second mounting portion (102); the preset channel (11) comprises a first channel section (111) and a second channel section (112); the first channel section (111) is arranged on the first mounting portion (101), and the second channel section (112) is arranged on the second mounting portion (102); the first end of the first channel section (111) is the first end of the preset channel (11); the first mounting portion (101) is connected to the front plate (220); the first mounting portion (101) and the second mounting portion (102) are connected so that the second end of the first channel section (111) is connected to the first end of the second channel section (112); the second end of the second channel section (112) is the second end of the preset channel (11).

8. The current limiting mechanism according to claim 1, characterized in that: The front filler sheet (220) and the rear filler sheet (230) surround two oil bags (210), and the two oil bags (210) are respectively an upper oil bag (2101) and a lower oil bag (2102); at least one of the upper oil bag (2101) and the lower oil bag (2102) is provided with the flow limiting mechanism.

9. An electric oil heater, characterized in that: The invention comprises the flow limiting mechanism according to any one of claims 1 to 8.

10. The electric oil heater according to claim 9, characterized in that: The rear radiator sheet (230) of the tail radiator sheet group (200) of the electric oil radiator comprises an upper protrusion (2301) and a lower protrusion (2302), wherein the upper protrusion (2301) is used to enclose an upper oil bag (2101), and the lower protrusion (2302) is used to enclose a lower oil bag (2102); the protrusion height of the lower protrusion (2302) is smaller than the protrusion height of the upper protrusion (2301).

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