Electricity meter

Abstract

The application discloses an electric energy meter, which comprises a shell, an electric energy detecting assembly and a heat radiating assembly. The shell is internally provided with a containing cavity, which is provided with an air inlet hole and an air outlet hole communicating with the outside. The electric energy detecting assembly comprises electric energy detecting pieces and wiring terminals which are electrically connected with each other. The electric energy detecting pieces and the wiring terminals are both installed in the containing cavity. The heat radiating assembly comprises a power module, an air inlet fan and an air outlet fan which are all installed on the shell. The air inlet fan and the air outlet fan are both electrically connected with the power module. The power module is electrically connected with the wiring terminals and is used for feeding power to the air inlet fan and the air outlet fan. The air inlet fan is correspondingly arranged with the air inlet hole, and the air outlet fan is correspondingly arranged with the air outlet hole. The electric energy meter of the application can quickly discharge hot air from the containing cavity and quickly suck cold air into the containing cavity through the air outlet fan and the air inlet fan, so that the heat in the containing cavity can be quickly radiated and accumulated, the generated temperature is not high, and the electric energy meter will not be burnt.

Description

Technical Field

[0001] This invention relates to the field of electrical engineering technology, and more particularly to an electricity meter. Background Technology

[0002] With economic development, the demand for electricity is increasing across all industries, and electricity meters, as instruments for measuring electrical energy, are widely used. The terminals of an electricity meter are connected to external cables and loads. When a user uses a large load, a large current is generated. This large current passing through the terminals of the electricity meter generates a lot of heat, causing the temperature of the terminals to rise continuously until the electricity meter burns out.

[0003] In view of the above-mentioned defects, it is necessary to provide a new type of electricity meter. Summary of the Invention

[0004] The main objective of this invention is to provide an electricity meter that addresses the problem of existing electricity meters overheating and burning out when connected to a load.

[0005] To achieve the above objectives, the present invention proposes an energy meter comprising a housing, an energy detection component, and a heat dissipation component. The housing has an internal cavity with an air inlet and an air outlet communicating with the outside. The energy detection component includes an energy detection element and a terminal block electrically connected to each other, both of which are installed within the cavity. The heat dissipation component includes a power module, an air intake fan, and an air outlet fan, all mounted on the housing. The air intake fan and the air outlet fan are electrically connected to the power module, which is also electrically connected to the terminal block and supplies power to the air intake fan and the air outlet fan. The air intake fan is correspondingly positioned to the air inlet, and the air outlet fan is correspondingly positioned to the air outlet.

[0006] Preferably, the heat dissipation component is disposed in the receiving cavity, the air inlet end of the air intake fan is correspondingly disposed to the air inlet hole, the air outlet end of the air outlet fan is correspondingly disposed to the air outlet hole, and both the air outlet end of the air intake fan and the air intake end of the air outlet fan are correspondingly disposed to the wiring terminal.

[0007] Preferably, the housing includes a housing base and a housing cover connected to each other, with the housing base and the housing cover forming the receiving cavity. The power module, the air intake fan, and the air exhaust fan are all mounted on the housing cover, and the wiring terminals are mounted on the housing base.

[0008] Preferably, the cover includes a first sub-cover and a second sub-cover, which divide the receiving cavity into a first chamber and a second chamber. The power detection device is installed in the first chamber, the wiring terminal and the heat dissipation assembly are both located in the second chamber, and the power module, the intake fan and the exhaust fan are all installed on the second sub-cover.

[0009] Preferably, the second sub-shell cover includes a top wall and side walls disposed around the top wall. The top wall, the side walls, and the shell base form the second chamber. The air inlet and the air outlet are both opened on the top wall. The power module, the air intake fan, and the air outlet fan are all installed on the top wall.

[0010] Preferably, there is a gap between the intake fan and the terminal block, and between the exhaust fan and the terminal block.

[0011] Preferably, the power module is provided with two power-taking probes spaced apart, and the terminal block is provided with two power supply holes spaced apart. The two power supply holes are respectively provided in one-to-one correspondence with the two power-taking probes. The power-taking probes are inserted into the corresponding power supply holes, and the outer side wall of the power-taking probes abuts against the hole wall of the power supply hole.

[0012] Preferably, the power-collecting probe includes a connecting post and a power-collecting post connected to each other. The cross-sectional dimension of the connecting post is larger than that of the power-collecting post. The power-collecting post is inserted into the corresponding power supply hole, and the outer wall of the power-collecting post abuts against the hole wall of the power supply hole.

[0013] Preferably, both the intake fan and the exhaust fan are detachably connected to the housing;

[0014] And / or, both the intake fan and the exhaust fan are electrically connected to the power module via wires, and the housing is provided with a fixing buckle for fixing the wires.

[0015] Preferably, both the air inlet and the air outlet are provided with multiple spaced protective bars;

[0016] And / or, the housing is provided with a first mark and a second mark, the first mark being near the air inlet and the second mark being near the air outlet.

[0017] In the technical solution of this invention, the electricity meter includes a shell, an electricity detection component, and a heat dissipation component. The shell has an internal cavity with an air inlet and an air outlet communicating with the outside. The electricity detection component includes an electricity detection element and a terminal block, both installed in the cavity and electrically connected to each other. The heat dissipation component includes a power module, an air intake fan, and an air exhaust fan, both installed on the shell. The air intake fan and the air exhaust fan are both electrically connected to the power module. When the electricity meter is installed and connected to an external cable and load through the terminal block, the power module is electrically connected to the terminal block and supplies power to the air intake fan and the air exhaust fan. The air intake fan is correspondingly set with the air inlet to draw in cold air from the outside into the cavity, and the air exhaust fan is correspondingly set with the air outlet to extract hot air from the cavity to the outside. The energy meter of the present invention uses an exhaust fan to quickly expel hot air from the housing cavity and an intake fan to quickly draw in cold air from the outside. This rapid expulsion of hot air and intake of cold air creates air convection within the housing cavity, allowing the heat generated by the wiring terminals when a load is connected to the housing cavity to be quickly dissipated to the outside. This prevents heat accumulation within the housing cavity, keeps the temperature low, and avoids burning out the energy meter. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an energy meter in one embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of an energy meter from another angle in one embodiment of the present invention;

[0021] Figure 3 for Figure 2 Schematic diagram of the cross section at point AA;

[0022] Figure 4 This is a schematic diagram of the structure of the second sub-shell cover in one embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the heat dissipation component installed on the second sub-shell cover in one embodiment of the present invention.

[0024] Explanation of icon numbers:

[0025]

[0026]

[0027] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0030] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0033] This invention proposes an energy meter designed to solve the problem that existing energy meters overheat and are prone to burning out when connected to a load.

[0034] Please refer to Figures 1 to 3The electricity meter includes a housing 1, an electricity detection component 2, and a heat dissipation component 3. The housing 1 has an internal cavity 11 with an air inlet 111 and an air outlet 112 communicating with the outside. The electricity detection component 2 includes an electricity detection element and a terminal block 21 that are electrically connected to each other. Both the electricity detection element and the terminal block 21 are installed inside the cavity 11. The heat dissipation component 3 includes a power module 31, an air intake fan 32, and an air outlet fan 33, all installed on the housing 1. The air intake fan 32 and the air outlet fan 33 are both electrically connected to the power module 31. The power module 31 is electrically connected to the terminal block 21 and is used to supply power to the air intake fan 32 and the air outlet fan 33. The air intake fan 32 is correspondingly set with the air inlet 111, and the air outlet fan 33 is correspondingly set with the air outlet 112.

[0035] The electricity meter of the present invention includes a housing 1, an electricity detection component 2, and a heat dissipation component 3. The housing 1 has a cavity 11 inside, which has an air inlet 111 and an air outlet 112 communicating with the outside. The electricity detection component 2 includes an electricity detection element and a terminal block 21, both installed in the cavity 11 and electrically connected to each other. The heat dissipation component 3 includes a power module 31, an air intake fan 32, and an air outlet fan 33, both installed on the housing 1. The air intake fan 32 and the air outlet fan 33 are both electrically connected to the power module 31. When the electricity meter is installed and connected to an external cable and load through the terminal block 21, the power module 31 is electrically connected to the terminal block 21 and supplies power to the air intake fan 32 and the air outlet fan 33. The air intake fan 32 is correspondingly arranged with the air inlet 111 to draw cold air from the outside into the cavity 11, and the air outlet fan 33 is correspondingly arranged with the air outlet 112 to extract hot air from the cavity 11 to the outside. The electricity meter of this invention incorporates an exhaust fan 33 to rapidly expel hot air from the housing cavity 11 and an intake fan 32 to rapidly draw in cool outside air. This rapid expulsion of hot air and intake of cool air creates air convection within the housing cavity 11, quickly dissipating the heat generated by the terminals 21 when a load is connected. This prevents heat accumulation within the housing cavity 11, keeping the temperature low enough not to burn out the electricity meter and reducing the risk of fire. Furthermore, the terminals 21 located within the housing cavity 11 are covered by the outer casing 13, preventing them from being exposed and protecting users from electric shock.

[0036] In this regard, please combine Figure 3As shown, in one embodiment, the heat dissipation component 3 is disposed in the receiving cavity 11, the air intake end of the air intake fan 32 is correspondingly disposed with the air intake hole 111, the air outlet end of the air outlet fan 33 is correspondingly disposed with the air outlet hole 112, and the air outlet end of the air intake fan 32 and the air intake end of the air outlet fan 33 are both correspondingly disposed with the wiring terminal 21. To protect the heat dissipation component 3, it can be placed inside the receiving cavity 11. The air intake end of the air intake fan 32 is correspondingly set with the air intake hole 111, and the air outlet end of the air intake fan 32 is correspondingly set with the terminal 21. When the air intake fan 32 is working, it obtains cold air from the outside through the air intake hole 111 and blows it to the terminal 21 through its air outlet end. The air outlet end of the air exhaust fan 33 is correspondingly set with the air outlet hole 112, and the air intake end of the air exhaust fan 33 is correspondingly set with the terminal 21. When the air exhaust fan 33 is working, it obtains hot air from the terminal 21 through its air intake end and blows it to the outside through the air outlet hole 112.

[0037] Furthermore, the outer casing 1 includes a casing base 12 and a casing cover 13 connected to each other, forming a receiving cavity 11 between the casing base 12 and the casing cover 13. The power module 31, the intake fan 32, and the exhaust fan 33 are all mounted on the casing cover 13, and the wiring terminal 21 is mounted on the casing base 12. To facilitate the assembly of the electricity meter, the outer casing 1 can be configured as an interconnected casing base 12 and casing cover 13, with the power module 31, the intake fan 32, and the exhaust fan 33 all mounted on the casing cover 13, and the wiring terminal 21 mounted on the casing base 12. Then, the casing cover 13 is fastened onto the casing base 12. Moreover, by mounting the heat dissipation component 3 on the casing cover 13 and the wiring terminal 21 on the casing base 12, the relative positions of the intake fan 32 and the exhaust fan 33 of the heat dissipation component 3 to the wiring terminal 21 can be adjusted, thereby improving the heat dissipation effect of the electricity meter.

[0038] Additionally, please combine Figure 2 and Figure 3As shown, in one embodiment, the housing cover 13 includes a first sub-housing cover 131 and a second sub-housing cover 132. The first sub-housing cover 131 and the second sub-housing cover 132 divide the receiving cavity 11 into a first chamber and a second chamber 113. The power detection component is installed in the first chamber, and the wiring terminal 21 and the heat dissipation assembly 3 are both located in the second chamber 113. The power module 31, the intake fan 32, and the exhaust fan 33 are all installed on the second sub-housing cover 132. In order to isolate the power detection component from the wiring terminal 21 and thus avoid the heat generated by the wiring terminal 21 from affecting the power detection component, the receiving cavity 11 can be divided into a first chamber and a second chamber 113 by setting the first sub-housing cover 131 and the second housing cover 132. The power detection component is installed in the first chamber, and the wiring terminal 21 is installed in the second chamber 113, thus isolating the power detection component and the wiring terminal 21 and avoiding the influence of the wiring terminal 21 on the power detection component, thereby ensuring the detection accuracy of the power detection component. Furthermore, by reducing the installation space of the terminal block 21 from the receiving cavity 11 to the second chamber 113, it is easier for the intake fan 32 and the exhaust fan 33 to generate air convection in the second chamber 113 when they are working, which can quickly remove the hot air in the second chamber 113 and reduce the temperature of the terminal block 21.

[0039] In this regard, please combine Figure 4 and Figure 5 As shown, the second sub-shell cover 132 includes a top wall 1321 and side walls disposed around the top wall 1321. The top wall 1321, the side walls and the shell base 12 form a second chamber 113. The air inlet 111 and the air outlet 112 are both opened on the top wall 1321. The power module 31, the air intake fan 32 and the air outlet fan 33 are all installed on the top wall 1321. In this embodiment, in order to facilitate the design and production of the second sub-shell cover 132 and the installation of the heat dissipation component 3, the air inlet 111 and the air outlet 112 can be set on the same side wall of the second sub-shell cover 132, such as on the top wall 1321 of the second sub-shell cover 132. The wiring terminal 21 is set on the housing 12. After the second sub-shell cover 132 is connected to the housing 12, the top wall 1321 of the second sub-shell cover 132 is correspondingly set with the wiring terminal 21 on the housing 12. The air inlet 111 and the air outlet 112 opened on the top wall 1321 are both correspondingly set with the wiring terminal 21, so that the air convection at the wiring terminal 21 can be quickly carried out, and the temperature at the wiring terminal 21 can be quickly reduced.

[0040] Furthermore, please combine Figure 3 As shown, gaps are provided between the intake fan 32 and the terminal 21, and between the exhaust fan 33 and the terminal 21, to achieve multiple functions. In this embodiment, to protect the safety of the electricity meter and prevent the terminal 21 from affecting the intake fan 32 and the exhaust fan 33, gaps are provided between the intake fan 32 and the terminal 21, and between the exhaust fan 33 and the terminal 21.

[0041] Additionally, please combine Figure 3 and Figure 5 As shown, in the above embodiment, the power module 31 is provided with two power probes 311 spaced apart, and the terminal block 21 is provided with two power supply holes 211 spaced apart. The two power supply holes 211 are respectively arranged in correspondence with the two power probes 311. The power probes 311 are inserted into the corresponding power supply holes 211, and the outer wall of the power probes 311 abuts against the hole wall of the power supply holes 211. The power module 31 has two power-taking probes 311, one for positive and one for negative power. The terminal block 21 has two power supply holes 211 corresponding to the positive and negative probes 311 respectively. When the second sub-shell cover 132 is on the housing 12, the positive probe 311 and the negative probe 311 are inserted into their respective power supply holes 211. This allows the power module 31 to obtain electrical energy through the terminal block 21, which is then converted into the electrical energy required by the intake fan 32 and the exhaust fan 33, enabling them to operate. The power-taking probes 311 can be inserted into their respective power supply holes 211 simply by having the second sub-shell cover 132 on the housing 12, eliminating the need for manual wiring and ensuring safety and reliability.

[0042] In one embodiment, the power-taking probe 311 includes a connecting post 3111 and a power-taking post 3112 connected to each other. The cross-sectional dimension of the connecting post 3111 is larger than that of the power-taking post 3112. The power-taking post 3112 is inserted into the corresponding power supply hole 211, and the outer wall of the power-taking post 3112 abuts against the hole wall of the power supply hole 211. To improve the structural strength and rigidity of the power-taking probe 311, the power-taking probe 311 not only has a power-taking post 3112 inserted into the power supply hole 211, but also has a connecting post 3111 with a cross-sectional dimension larger than that of the power-taking post 3112. One end of the connecting post 3111 is connected to the end of the power-taking post 3112, and the end of the connecting post 3111 away from the power-taking post 3112 is located on the body of the power module 31.

[0043] Furthermore, please combine Figure 5 As shown, in one embodiment, both the intake fan 32 and the exhaust fan 33 are detachably connected to the housing 1. To facilitate the installation and maintenance of the intake fan 32 and the exhaust fan 33, both the intake fan 32 and the exhaust fan 33 can be connected to the housing 1 by connecting screws. That is, the housing 1 is provided with threaded holes, and the intake fan 32 and the exhaust fan 33 are provided with through holes for the connecting screws to pass through. The connecting screws are passed through the through holes and screwed into the threaded holes, thereby allowing the intake fan 32 and the exhaust fan 33 to be detachably installed on the housing 1.

[0044] In another embodiment, please combine Figure 5As shown, both the intake fan 32 and the exhaust fan 33 are electrically connected to the power module 31 via wires 321. The housing 1 is equipped with fixing clips to secure the wires 321. Both the intake fan 32 and the exhaust fan 33 have wires 321 that are electrically connected to the power module 31. To make the wires 321 more neatly and aesthetically pleasing, fixing clips are provided on the housing 1 to hold the wires 321 in place. When both the intake fan 32 and the exhaust fan 33 are located within the receiving cavity 11, the fixing clips secure the wires 321, maintaining a certain gap between the outer housing of the wires 321 and the terminal block 21. This prevents the terminal block 21 from overheating and affecting the wires 321.

[0045] Additionally, please combine Figure 1 As shown, in one embodiment, multiple spaced protective rods 1111 are provided on both the air inlet 111 and the air outlet 112. When the outer shell 1 includes the shell base 12 and the shell cover 13, the protective rods 1111 can be integrally formed with the shell cover 13. When the shell cover 13 includes the first sub-shell cover 131 and the second sub-shell cover 132, the second sub-shell cover 132 and the protective rods 1111 can be integrally formed. The protective rods 1111 can prevent foreign objects from entering the receiving cavity 11. In other embodiments, protective nets can also be provided at the air inlet 111 and the air outlet.

[0046] In another embodiment, please combine Figure 1 and Figure 4 As shown, the outer casing 1 is provided with a first mark 14 and a second mark 15. The first mark 14 is near the air inlet 111, and the second mark 15 is near the air outlet 112. The first mark 14 and the second mark 15 can be stickers, with the words "air inlet 111" printed on the first mark 14 and the words "air outlet 112" printed on the second mark 15. Alternatively, the first mark 14 and the second mark 15 can be directly formed on the outer casing 1 by laser marking.

[0047] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An electricity meter, characterized in that, The electricity meter includes: The outer shell has an internal cavity with an air inlet and an air outlet that communicate with the outside. The power detection assembly includes a power detection element and a terminal block that are electrically connected to each other, and both the power detection element and the terminal block are installed inside the receiving cavity; The heat dissipation assembly includes a power module, an intake fan, and an exhaust fan, all mounted on the housing. The intake fan and the exhaust fan are both electrically connected to the power module. The power module is electrically connected to the terminal block and is used to supply power to the intake fan and the exhaust fan. The intake fan is correspondingly arranged with the air inlet, and the exhaust fan is correspondingly arranged with the air outlet. The heat dissipation component is disposed in the receiving cavity. The air inlet end of the air intake fan is correspondingly disposed to the air inlet hole, and the air outlet end of the air outlet fan is correspondingly disposed to the air outlet hole. Both the air outlet end of the air intake fan and the air intake end of the air outlet fan are correspondingly disposed to the wiring terminal. The outer casing includes a housing base and a housing cover connected to each other, with the housing base and the housing cover forming the receiving cavity. The power module, the air intake fan, and the air exhaust fan are all mounted on the housing cover, and the wiring terminals are mounted on the housing base. The cover includes a first sub-cover and a second sub-cover, which divide the receiving cavity into a first chamber and a second chamber. The power detection device is installed in the first chamber, the wiring terminal and the heat dissipation assembly are both located in the second chamber, and the power module, the air intake fan and the air exhaust fan are all installed on the second sub-cover.

2. The electricity meter as described in claim 1, characterized in that, The second sub-shell cover includes a top wall and side walls surrounding the top wall. The top wall, the side walls, and the shell base form the second chamber. The air inlet and the air outlet are both located on the top wall. The power module, the air intake fan, and the air outlet fan are all mounted on the top wall.

3. The electricity meter as described in claim 2, characterized in that, There are gaps between the intake fan and the terminal block, and between the exhaust fan and the terminal block.

4. The electricity meter as described in claim 2, characterized in that, The power module is provided with two power-taking probes spaced apart, and the terminal block is provided with two power supply holes spaced apart. The two power supply holes are respectively provided with two power-taking probes in a one-to-one correspondence. The power-taking probe is inserted into the corresponding power supply hole, and the outer wall of the power-taking probe abuts against the hole wall of the power supply hole.

5. The electricity meter as described in claim 4, characterized in that, The power-collecting probe includes a connecting post and a power-collecting post connected to each other. The cross-sectional dimension of the connecting post is larger than that of the power-collecting post. The power-collecting post is inserted into the corresponding power supply hole, and the outer wall of the power-collecting post abuts against the hole wall of the power supply hole.

6. The electricity meter as described in any one of claims 1 to 5, characterized in that, Both the intake fan and the exhaust fan are detachably connected to the housing. And / or, both the intake fan and the exhaust fan are electrically connected to the power module via wires, and the housing is provided with a fixing buckle for fixing the wires.

7. The electricity meter as described in any one of claims 1 to 5, characterized in that, Both the air inlet and air outlet are equipped with multiple spaced protective bars. And / or, the housing is provided with a first mark and a second mark, the first mark being near the air inlet and the second mark being near the air outlet.

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