Current limiting mechanism and electrical oil heater

Abstract

The utility model provides a current limiting mechanism and an electrical oil heater. The current limiting mechanism is applied to a tail heater sheet group 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 utility model relates to electric heating oil heater technical field, specifically, relate to a current -limiting mechanism and electric heating oil heater. BACKGROUND

[0002] Oil heater is a kind of electric heater that has good heating effect and is convenient to warm.

[0003] The tail piece of oil heater is the part that is easy to be contacted by human body, and there is the risk of scalding human body. UTILITY MODEL CONTENTS

[0004] The utility model mainly aims at providing a current -limiting mechanism and electric heating oil heater to play the role of heat insulation and current limiting in tail piece group, and play the effect of anti-scalding.

[0005] In order to realize the above-mentioned purpose, according to one aspect of the utility model, a current -limiting mechanism is provided, which is applied to the tail piece group of electric heating oil heater, the tail piece group includes front piece and rear piece, and the front piece and the rear piece enclose oil bag and oil guide channel;The current -limiting mechanism is arranged in the oil bag and includes: mounting piece, with preset channel;The mounting piece is connected with the front piece, so that the first end of the preset channel is communicated with the oil bag communication port of the front piece;The second end of the preset channel is closed, and the second end of the preset channel is provided with a current -limiting hole, and the current -limiting hole is communicated with the preset channel and the cavity of the oil bag;Current -limiting assembly is arranged at the current -limiting hole;The current -limiting assembly includes two sealing pieces, and the two sealing pieces are located at the inner side and the outer side of the current -limiting hole respectively;Each sealing piece is movably arranged to have the shielding state of shielding the current -limiting hole and the give -up state of being away from the current -limiting hole.

[0006] Further, the current -limiting assembly further includes: connecting piece, the connecting piece is fixedly arranged in the current -limiting hole and is spaced apart from the hole wall of the current -limiting hole;Two sealing pieces are all arranged on the connecting piece and are movably arranged along the axial direction of the current -limiting hole.

[0007] Further, the current -limiting assembly further includes: two elastic members, two elastic members are arranged one by one with two sealing pieces respectively;Each elastic member is located on the side away from the current -limiting hole of the corresponding sealing piece;The elastic member has the first end and the second end relatively arranged along the elastic expansion direction of the elastic member;The elastic expansion direction of the elastic member is parallel or identical with the axial direction of the current -limiting hole;The first end of the elastic member is fixedly connected with the connecting piece, and the second end of the elastic member is connected with the corresponding sealing piece.

[0008] Further, the two sealing pieces are respectively first sealing piece and second sealing piece, the first sealing piece is located at the inner side of the current -limiting hole, and the second sealing piece is located at the outer side of the current -limiting hole;When the current -limiting assembly is in the initial state, the first sealing piece is spaced apart from the inner end of the current -limiting hole, and the second sealing piece is spaced apart from the outer end of the current -limiting hole, so that the two sealing pieces are in the give -up state.

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

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

[0011] Further, the flow-limiting hole is arranged on the upper portion of the mounting member.

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

[0013] Further, the connecting member is a rod-shaped structure.

[0014] Further, the oil bag communication port is in butt joint communication with 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] Further, along the axial direction of the preset channel, the mounting member has oppositely arranged first and second ends; 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 member; the first end of the mounting member is connected with the front sheet, and the second end of the mounting member is arranged in a spaced manner with the rear sheet.

[0016] Further, the mounting member comprises a first mounting portion and a second mounting portion, and the preset channel comprises a first channel segment and a second channel segment; the first channel segment is arranged on the first mounting portion, and the second channel segment is arranged on the second mounting portion; the first end of the first channel segment is the first end of the preset channel, and the first mounting portion is connected with the front sheet; the first mounting portion and the second mounting portion are connected to make the second end of the first channel segment in communication with the first end of the second channel segment; and the second end of the second channel segment is the second end of the preset channel.

[0017] Further, the front sheet and the rear sheet enclose two oil bags, and the two oil bags are respectively an upper oil bag and a lower oil bag; at least one of the upper oil bag and the lower oil bag is provided with a flow-limiting mechanism.

[0018] According to another aspect of the present application, an electric heating oil heater is provided, which comprises the above flow-limiting mechanism.

[0019] Further, the rear sheet of the tail sheet group of the electric heating oil heater comprises an upper protruding portion and a lower protruding portion; the upper protruding portion is used for enclosing the upper oil bag, and the lower protruding portion is used for enclosing the lower oil bag; and the protruding height of the lower protruding portion is smaller than the protruding height of the upper protruding portion.

[0020] According to the technical scheme of the present application, the flow-limiting mechanism is applied to the tail sheet group of the electric heating oil heater, and the flow-limiting mechanism is arranged in the oil bag. The flow-limiting mechanism comprises a mounting member with a preset channel; the first end of the preset channel is in an open shape; the mounting member is connected with the front sheet to make the first end of the preset channel in communication with the oil bag communication port of the front sheet; the second end of the preset channel is arranged in a closed manner; the second end of the preset channel is provided with a flow-limiting hole; the flow-limiting hole is in communication with the preset channel, and the flow-limiting hole is in communication with the cavity of the oil bag.

[0021] The flow-limiting component is arranged at the flow-limiting hole; the flow-limiting component comprises two seals arranged at the inner side and the outer side of the flow-limiting hole respectively.

[0022] The flow-limiting mechanism of the application is used to play a role of heat insulation and flow limitation in the tail fin group; the flow-limiting mechanism can limit the flow of the heat-conducting oil into the cavity of the oil bag, and can realize the connection and disconnection between the preset channel and the cavity of the oil bag; the amount of the heat-conducting oil in the cavity of the oil bag is adjusted to adjust the temperature rise of the rear fin. The rear fin is a part of the human body that is easy to contact, and by setting the flow-limiting mechanism, the anti-scald effect can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings accompanying the specification of the application form a part of the application and serve to provide further understanding of the application, the exemplary embodiments of the application and the explanations thereof serve to explain the application, and do not constitute an improper limitation on the application. In the drawings:

[0024] Figure 1 Fig. 1 shows a structure schematic view of the flow-limiting mechanism of the application arranged in the upper and lower oil bags of the tail fin group;

[0025] Figure 2 Fig. 2 shows a structure schematic view of the flow-limiting mechanism of the application arranged in the oil bag of the tail fin group;

[0026] Figure 3 Fig. 3 shows a cooperation structure schematic view of the flow-limiting component and the flow-limiting hole of the flow-limiting mechanism of the application;

[0027] Figure 4 Fig. 4 shows a structure schematic view of the rear fin of the tail fin group according to the application;

[0028] Figure 5 Fig. 5 shows a side view of the rear fin of the tail fin group in Fig. 4; Figure 4

[0029] Fig. 6 shows a structure schematic view of the mounting piece of the flow-limiting mechanism according to the application; Figure 6

[0030] Fig. 7 shows a structure schematic view of the mounting piece of the flow-limiting mechanism according to the application from another perspective; Figure 7

[0031] Fig. 8 shows a structure schematic view of the flow-limiting component of the flow-limiting mechanism according to the application; Figure 8

[0032] Figure 9 ​An explosion structure schematic diagram of the current-limiting assembly of the current-limiting mechanism according to the utility model is shown.

[0033] Figure 10 Another view structure schematic diagram of the current-limiting assembly of the current-limiting mechanism according to the utility model is shown.

[0034] Among them, the above-mentioned drawings include the following reference signs:

[0035] 100, current-limiting mechanism;

[0036] 10, mounting piece; 101, first mounting part; 102, second mounting part; 103, end cover part; 11, preset passage; 111, first passage section; 112, second passage section; 12, current-limiting hole;

[0037] 30, current-limiting assembly; 31, sealing piece; 311, first sealing piece; 312, second sealing piece; 313, through hole; 32, connecting piece; 33, elastic piece; 331, first elastic piece; 332, second elastic piece;

[0038] 200, tail section tablet group; 210, oil package; 2101, upper oil package; 2102, lower oil package; 220, front tablet; 2201, oil package communication port; 230, rear tablet; 2301, upper protruding part; 2302, lower protruding part. DETAILED DESCRIPTION

[0039] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0040] It should be noted that the following detailed description is all exemplary and is intended to provide further description of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as generally 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 intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component and / or combination thereof.

[0042] The present utility model provides a current-limiting mechanism 100, please refer to Figures 1 to 10The flow-limiting mechanism 100 is applied to a tail heater plate group 200 of the electric oil heater; the tail heater plate group 200 comprises a front heater plate 220 and a rear heater plate 230, and the rear heater plate 230 is located outside the front heater plate 220; the front heater plate 220 and the rear heater plate 230 enclose an oil pocket 210 and an oil guide channel.

[0043] The flow-limiting mechanism 100 is arranged in the oil pocket 210. The flow-limiting mechanism 100 comprises a mounting member 10 with a preset channel 11, the first end of the preset channel 11 is open, the mounting member 10 is connected with the front heater plate 220, so that the first end of the preset channel 11 is in communication with an oil pocket communication port 2201 of the front heater plate 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 in communication with the preset channel 11, and the flow-limiting hole 12 is in communication with a cavity of the oil pocket 210.

[0044] The electric oil heater is connected with a secondary tail heater plate group, and the oil pocket communication port 2201 of the front heater plate 220 of the tail heater plate group 200 is in communication with an oil pocket of the secondary tail heater plate group.

[0045] The flow-limiting assembly 30 is arranged at the flow-limiting hole 12; the flow-limiting assembly 30 comprises two sealing members 31, and the two sealing members 31 are respectively located at 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; and the outer side of the flow-limiting hole 12 refers to the side of the flow-limiting hole 12 facing 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 arranged oppositely; the inner end of the flow-limiting hole 12 is in communication with the preset channel 11, and the outer end of the flow-limiting hole 12 is in communication with the cavity of the oil pocket 210.

[0047] The oil in the oil pocket of the secondary tail heater plate group can flow into the preset channel 11 through the oil pocket communication port 2201 of the front heater plate 220 of the tail heater plate group 200 and the first end of the preset channel 11, and then flow into the cavity of the oil pocket 210 through the flow-limiting hole 12, and then flow to the oil guide channel of the tail heater plate group 200, so as to drive the temperature rise of the rear heater plate 230.

[0048] It should be noted that the oil in the oil pocket of the secondary tail heater plate group can only flow into the preset channel 11 through the oil pocket communication port 2201 and the first end of the preset channel 11, and then flow into the cavity of the oil pocket 210 through the flow-limiting hole 12; that is, the oil in the oil pocket of the secondary tail heater plate group cannot directly enter the cavity of the oil pocket 210 through the oil pocket communication port 2201. Alternatively, the oil pocket communication port 2201 is in butt joint communication with the first port of the preset channel 11, and the oil pocket communication port 2201 is smaller than or equal to the first port of the preset channel 11.

[0049] Each seal 31 of the flow limiting assembly 30 is movably arranged to have a shielding state of shielding the flow limiting hole 12 and a giving state of being away from the flow limiting hole 12.

[0050] The two seals 31 are respectively a first seal 311 and a second seal 312, the first seal 311 is located at the inner side of the flow limiting hole 12, and the second seal 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 shields the inner end of the flow limiting hole 12, that is, the first seal 311 is in the shielding 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 then cannot 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 shields the outer end of the flow limiting hole 12, that is, the second seal 312 is in the shielding state; at this time, the oil in the cavity of the oil bag 210 cannot flow into the flow limiting hole 12 from the outer end of the flow limiting hole 12, and then cannot flow into the preset channel 11.

[0053] In the present application, along the axial direction of the preset channel 11, the mounting piece 10 has oppositely arranged first and second ends; 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 piece 10; the axial direction of the preset channel 11 is parallel or the same as the distribution direction of the front and rear flanges 220 and 230. The first end of the mounting piece 10 is connected with the front flange 220, so that the first end of the preset channel 11 communicates with the oil bag communication port 2201 of the front flange 220; the flow limiting hole 12 is arranged at the second end of the mounting piece 10, and the second end of the mounting piece 10 is spaced apart from the rear flange 230, so that the flow limiting hole 12 communicates with the space between the second end of the mounting piece 10 and the rear flange 230, and then the flow limiting hole 12 communicates with the cavity of the oil bag 210.

[0054] The spacing between the second end of the mounting member 10 and the back gasket 230 is ensured to ensure the normal temperature rise of the back gasket 230.

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

[0056] In the present application, the flow-limiting assembly 30 further comprises a connecting member 32 fixedly penetrating the flow-limiting hole 12, the connecting member 32 is spaced apart from the hole wall of the flow-limiting hole 12; the two sealing members 31 are both sleeved on the connecting member 32, and the two sealing members 31 are both movably arranged along the axial direction of the flow-limiting hole 12. By moving each sealing member 31 along the axial direction of the flow-limiting hole 12, each sealing member 31 is converted between the shielding state and the giving space state.

[0057] Since the connecting member 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 member 32 and the hole wall of the flow-limiting hole 12, so as to ensure the flowability of the flow-limiting hole 12.

[0058] When the first sealing member 311 moves along the axial direction of the flow-limiting hole 12 and towards the direction close to the flow-limiting hole 12, the spacing between the first sealing member 311 and the inner end of the flow-limiting hole 12 gradually decreases; when the first sealing member 311 moves along the axial direction of the flow-limiting hole 12 and towards the direction away from the flow-limiting hole 12, the spacing between the first sealing member 311 and the inner end of the flow-limiting hole 12 gradually increases.

[0059] When the second sealing member 312 moves along the axial direction of the flow-limiting hole 12 and towards the direction close to the flow-limiting hole 12, the spacing between the second sealing member 312 and the outer end of the flow-limiting hole 12 gradually decreases; when the second sealing member 312 moves along the axial direction of the flow-limiting hole 12 and towards the direction away from the flow-limiting hole 12, the spacing between the second sealing member 312 and the outer end of the flow-limiting hole 12 gradually increases.

[0060] When the first sealing member 311 is in the giving space state, and when the spacing between the first sealing member 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 pack 210 decreases; when the first sealing member 311 is in the giving space state, and when the spacing between the first sealing member 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 pack 210 increases.

[0061] When the second seal 312 is in the 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 pack 210 into the flow-limiting hole 12 and then into the preset channel 11 decreases; when the second seal 312 is in the 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 pack 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 pack 210, under the action of the pressure difference, the first seal 311 gradually approaches the inner end of the flow-limiting hole 12 in the axial direction of the flow-limiting hole 12 until it contacts and blocks the inner end of the flow-limiting hole 12.

[0063] When the pressure in the cavity of the oil pack 210 is greater than the pressure in the preset channel 11, under the action of the pressure difference, the second seal 312 gradually approaches the outer end of the flow-limiting hole 12 in the axial direction of the flow-limiting hole 12 until it contacts 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 with 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 connected with the hole wall of the flow-limiting hole 12; or the outer peripheral wall of the connecting member 32 is connected with the hole wall of the flow-limiting hole 12 through an intermediate element, but the intermediate element does not affect the flow-through property of the flow-limiting hole 12.

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

[0066] The elastic member 33 has a first end and a second end arranged oppositely in the elastic stretching direction of the elastic member 33; the elastic stretching 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 with the connecting member 32, and the second end of the elastic member 33 is connected with the corresponding seal 31.

[0067] Specifically, the two elastic members 33 of the flow-limiting assembly 30 are respectively a first elastic member 331 and a second elastic member 332; in the axial direction of the flow-limiting hole 12, the first elastic member 331 is located on the side of the first seal 311 away from the flow-limiting hole 12, and the second elastic member 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 with the connecting member 32, and the second end of the first elastic member 331 is connected with the first sealing member 311. Due to the elastic and retractable property of the first elastic member 331, the first sealing member 311 can move along the axial direction of the flow-limiting hole 12, and the elastic force of the first elastic member 331 can provide certain power for the movement of the first sealing member 311.

[0069] The first end of the first elastic member 331 is fixedly connected with the connecting member 32, and the second end of the first elastic member 331 is connected with the first sealing member 311. Due to the elastic and retractable property of the first elastic member 331, the first sealing member 311 can move along the axial direction of the flow-limiting hole 12, and the elastic force of the first elastic member 331 can provide certain power for the movement of the first sealing member 311.

[0070] When the flow-limiting assembly 30 is in the 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 in the yielding state, and the inner end and the outer end of the flow-limiting hole 12 are in the 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 the inner end of the flow-limiting hole 12 is blocked; when the pressure difference is less than the elastic force of the first elastic member 331 or the pressure difference disappears, 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 under the elastic force of the first elastic member 331, so as to yield to the inner end of the flow-limiting hole 12 and return to the yielding state, so that the inner end of the flow-limiting hole 12 returns to the open state.

[0072] 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 the inner end of the flow-limiting hole 12 is blocked; when the pressure difference is less than the elastic force of the first elastic member 331 or the pressure difference disappears, 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 under the elastic force of the first elastic member 331, so as to yield to the inner end of the flow-limiting hole 12 and return to the yielding state, so that the inner end of the flow-limiting hole 12 returns to the open state.

[0073] When the electric oil heater is normally heated, the temperature of the heat-conducting oil is increased and gradually flows into the preset channel 11 through the oil bag connecting port 2201 of the tail heater sheet group 200 and the first end of the preset channel 11; as the amount of the heat-conducting oil in the preset channel 11 is increased, the heat-conducting oil in the preset channel 11 flows into the cavity of the oil bag 210 through the flow-limiting hole 12; as the temperature of the heat-conducting oil is increased, the pressure in the preset channel 11 is greater than the pressure in the cavity of the oil bag 210, and thus a pressure difference exists, 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, the distance between the first sealing member 311 and the inner end of the flow-limiting hole 12 is gradually reduced, and the amount of the liquid flowing into the cavity of the oil bag 210 from the preset channel 11 through the flow-limiting hole 12 is gradually reduced; as the heat is continuously increased and the amount of the heat-conducting oil in the preset channel 11 is increased, the pressure in the preset channel 11 is further increased, and thus the first sealing member 311 is further moved towards the flow-limiting hole 12 until the first sealing member 311 contacts the inner end of the flow-limiting hole 12, the inner end of the flow-limiting hole 12 is blocked and closed, and the heat-conducting oil in the preset channel 11 cannot enter the cavity of the oil bag 210 any more; at this time, the heat is transferred to the rear heater sheet 230 by the heat transfer between the front heater sheet 220 and the rear heater sheet 230, and the temperature rise of the rear heater sheet 230 is ensured to meet the requirements.

[0074] When the electric oil heater is not heated, as the temperature of the heat-conducting oil is reduced, the pressure in the preset channel 11 is reduced, 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-conducting oil in the preset channel 11 can enter the cavity of the oil bag 210, and the heat-conducting oil in the cavity of the oil bag 210 can also enter the preset channel 11, that is, the heat-conducting oil on both sides of the flow-limiting hole 12 can be exchanged and circulated, so as to ensure the temperature of the rear heater sheet 230 and realize the heat exchange, thereby gradually tending to be stable.

[0075] Based on the thermal expansion and contraction property of the heat-conducting oil, when the heat-conducting oil is heated, the volume of the heat-conducting oil is increased; when the heat-conducting oil is cooled, the volume of the heat-conducting oil is reduced. When the electric oil heater is not heated, due to the small heat dissipation area of the tail heater sheet group 200, the liquid level in the tail heater sheet group 200 is reduced slowly, so that the liquid level in the tail heater sheet group 200 is greater than the liquid level in the secondary tail heater sheet group, and thus the pressure in the cavity of the oil bag 210 is greater than the pressure in the preset channel 11.

[0076] By arranging the elastic member 33, the sealing member 31 can be further stopped, and it is ensured 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 silica rubber sleeve.

[0080] In the present application, the sealing member 31 has a through hole 313 for the connector 32 to pass through, i.e. the sealing member 31 is sleeved on the connector 32 through the through 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 connector 32 is a rod-shaped structure, and the axial direction of the connector 32 is parallel or identical to the axial direction of the flow-limiting hole 12, i.e. the sealing member 31 is movably arranged along the axial direction of the connector 32.

[0083] In the present application, optionally, the flow-limiting hole 12 is arranged 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 comprises a first mounting portion 101 and a second mounting portion 102 connected to each other; the preset channel 11 comprises a first channel segment 111 and a second channel segment 112, the first channel segment 111 is arranged on the first mounting portion 101, and the second channel segment 112 is arranged on the second mounting portion 102; the first end of the first channel segment 111 is the first end of the preset channel 11, and the first mounting portion 101 is connected to the front sealing sheet 220; the first mounting portion 101 and the second mounting portion 102 are connected to communicate the second end of the first channel segment 111 and the first end of the second channel segment 112; and the second end of the second channel segment 112 is the second end of the preset channel 11.

[0085] Specifically, the second end of the first channel segment 111 and the first end of the second channel segment 112 are in butt joint communication.

[0086] Specifically, along the axial direction of the preset channel 11, the first mounting portion 101 has oppositely arranged first and second ends, and the second mounting portion 102 has oppositely arranged first and second ends; 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 to communicate the second end of the first channel segment 111 and the first end of the second channel segment 112; and 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; and the first mounting portion 101 is welded to the front sealing sheet 220.

[0088] In the present application, the mounting member 10 comprises an end cover portion 103 arranged at the second end of the preset channel 11 to close the second end of the preset channel 11 by the end cover portion 103; and the flow-limiting hole 12 is arranged on the end cover portion 103.

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

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

[0091] In the present application, the front and rear pieces 220 and 230 enclose two oil pockets 210, which are an upper oil pocket 2101 and a lower oil pocket 2102, respectively.

[0092] Optionally, the flow limiting mechanism 100 is arranged in the upper oil pocket 2101 or the lower oil pocket 2102, or the flow limiting mechanism 100 is arranged in both the upper oil pocket 2101 and the lower oil pocket 2102.

[0093] In the present application, optionally, the outer diameter of the elastic sleeve is greater than the hole diameter of the flow limiting hole 12, the hole diameter of the flow limiting hole 12 is greater than the hole diameter of the through hole 313 of the sealing member 31, and the hole diameter of the through hole 313 of the sealing member 31 is greater than the diameter of the connecting member 32.

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

[0095] Specifically, the hole wall of the through hole 313 of the sealing member 31 is in contact with 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 utility model also provides a kind of electric heating oil heater, as shown in Figures 1 to 10 The flow limiting mechanism 100 described above.

[0097] Specifically, the electric heating oil heater comprises one or two flow limiting mechanisms 100.

[0098] Specifically, the rear piece 230 of the tail piece group 200 comprises an upper protruding portion 2301 and a lower protruding portion 2302, the upper protruding portion 2301 is used to enclose the upper oil pocket 2101, and the lower protruding portion 2302 is used to enclose the lower oil pocket 2102; the protruding height of the lower protruding portion 2302 is less than the protruding height of the upper protruding portion 2301.

[0099] In specific use, the tail tank piece group 200 of the electric oil heater is arranged close to the mounting side wall, and the mounting side wall is generally a plane; the upper protruding part 2301 of the rear tank piece 230 is in contact with the mounting side wall, and since the protruding height of the lower protruding part 2302 is less than that of the upper protruding part 2301, there is necessarily a certain spacing between the lower protruding part 2302 of the rear tank piece 230 and the mounting side wall, and the lower oil bag 2102 of the rear tank piece 230 will not be in direct contact with the mounting side wall; in this way, the lower oil bag 2102 of the rear tank piece 230 can only be cooled by radiation.

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

[0101] The safety standard requires that the wall in contact with the tail piece is not more than 90 DEG C; by making the lower protruding part 2302 of the rear tank piece 230 not in direct contact with the mounting side wall, heat transfer is reduced, and it is ensured that the mounting side wall meets the standard requirements.

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

[0103] Specifically, the first mounting part 101 is arranged in the protruding part of the front tank piece 220, the second mounting part 102 is arranged in the protruding part of the rear tank piece 230, the protruding part of the front tank piece 220 and the protruding part of the rear tank piece 230 enclose the oil bag 210; and the length of the first channel section 111 is greater than the length of the second channel section 112.

[0104] Specifically, in the axial direction of the preset channel 11, the height of the first mounting part 101 is greater than the height of the second mounting part 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 part 102, the spacing between the second end of the mounting part 10 and the rear tank piece 230 can be increased, so as to ensure the normal temperature rise of the rear tank piece 230.

[0105] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0106] In the flow limiting mechanism 100 applied to the tail tank piece group 200 of the electric oil heater provided in the utility model, the flow limiting mechanism 100 is arranged in the oil bag 210. The flow limiting mechanism 100 comprises a mounting part 10 with a preset channel 11, the first end of the preset channel 11 is open, the mounting part 10 is connected with the front tank piece 220, so that the first end of the preset channel 11 is in communication with the oil bag communication opening 2201 of the front tank piece 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 in communication with the preset channel 11, and the flow limiting hole 12 is in communication with the cavity of the oil bag 210.

[0107] The flow-limiting component 30 is arranged at the flow-limiting hole 12, and comprises two seals 31 arranged at the inner side and the outer side of the flow-limiting hole 12 respectively. Each seal 31 of the flow-limiting component 30 is movably arranged to have a shielding state of shielding the flow-limiting hole 12 and a giving state of being 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 limitation in the tail fin group 200, can limit the flow of the heat-conducting oil into the cavity of the oil package 210, and can realize the connection and disconnection between the preset channel 11 and the cavity of the oil package 210; the temperature rise of the rear fin 230 is adjusted by adjusting the amount of the heat-conducting oil in the cavity of the oil package 210.

[0109] The rear fin 230 belongs to a part of the human body that is easy to contact, and the flow-limiting mechanism 100 can play a role of anti-scalding by being arranged.

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

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

[0112] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A current-limiting mechanism, characterized in that, In the tail section plate assembly (200) of an electric oil heater, the tail section plate assembly (200) includes a front plate (220) and a rear plate (230), the front plate (220) and the rear plate (230) forming an oil reservoir (210) and an oil guiding channel; the flow limiting mechanism is disposed in the oil reservoir (210) and includes: The mounting component (10) has a preset channel (11); the mounting component (10) is connected to the front plate (220) so that the first end of the preset channel (11) is connected to the oil tank communication port (2201) of the front plate (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), which is connected to the preset channel (11) and to the cavity of the oil tank (210); A flow limiting component (30) is disposed at the flow limiting hole (12); the flow limiting component (30) includes two seals (31), which are located on the inner and outer sides of the flow limiting hole (12), respectively; each seal (31) is movably disposed to have a blocking state that blocks the flow limiting hole (12) and a yielding state that moves away from the flow limiting hole (12).

2. The current limiting mechanism according to claim 1, characterized in that, The current limiting component (30) also includes: The connector (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 members (31) are both sleeved on the connector (32) and are 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) also includes: Two elastic elements (33) are provided, each corresponding to one of the two sealing elements (31); each elastic element (33) is located on the side of the corresponding sealing element (31) away from the flow-limiting hole (12); The elastic element (33) has a first end and a second end arranged opposite to each other along its elastic extension direction; the elastic extension direction of the elastic element (33) is parallel to or the same as the axial direction of the flow limiting hole (12); the first end of the elastic element (33) is fixedly connected to the connecting member (32), and the second end of the elastic element (33) is connected to the corresponding sealing member (31).

4. The current limiting mechanism according to claim 1, characterized in that, The two seals (31) are a first seal (311) and a second seal (312), respectively. The first seal (311) is located inside the flow-limiting hole (12), and the second seal (312) is located outside the flow-limiting hole (12). When the flow limiting component (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 the yielding state.

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

6. The current limiting mechanism according to claim 1, characterized in that, The flow-limiting orifice (12) is disposed on the upper part of the mounting component (10); and / or The seal (31) is a sealing sheet; and / or The oil-filled port (2201) is connected to the first port of the preset channel (11), and the oil-filled 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 disposed 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 plate (220), and the second end of the mounting member (10) is spaced apart from the rear plate (230).

7. The current limiting mechanism according to claim 1, characterized in that, The mounting component (10) includes a first mounting part (101) and a second mounting part (102). The preset channel (11) includes a first channel segment (111) and a second channel segment (112). The first channel segment (111) is disposed on the first mounting part (101), and the second channel segment (112) is disposed on the second mounting part (102). The first end of the first channel segment (111) is the first end of the preset channel (11). The first mounting part (101) is connected to the front plate (220). The first mounting part (101) and the second mounting part (102) are connected so that the second end of the first channel segment (111) communicates with the first end of the second channel segment (112). The second end of the second channel segment (112) is the second end of the preset channel (11).

8. The current limiting mechanism according to claim 1, characterized in that, The front plate (220) and the rear plate (230) form two oil packs (210), which are an upper oil pack (2101) and a lower oil pack (2102), respectively; at least one of the upper oil pack (2101) and the lower oil pack (2102) is provided with the flow limiting mechanism.

9. An electric oil heater, characterized in that, Includes the flow limiting mechanism as described in any one of claims 1 to 8.

10. The electric oil heater according to claim 9, characterized in that, The rear slab (230) of the tail slab assembly (200) of the electric oil heater includes an upper protrusion (2301) and a lower protrusion (2302). The upper protrusion (2301) is used to form an upper oil pouch (2101), and the lower protrusion (2302) is used to form a lower oil pouch (2102). The protrusion height of the lower protrusion (2302) is less than the protrusion height of the upper protrusion (2301).

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