Frequency conversion control device

Abstract

The utility model relates to a frequency conversion control device, comprising a housing, an inner side of which is provided with an accommodating cavity, at least one side wall of which is provided with an accommodating groove, the accommodating groove is communicated with the accommodating cavity, and one side opposite to the accommodating cavity is provided with a window; the control assembly is accommodated in the accommodating cavity; the radiator is provided with a plurality of radiating fins which are arranged at intervals, the radiator is installed in the containing groove, and at least part of each radiating fin is exposed out of the window. According to the frequency conversion control device, the radiator is arranged in the containing groove formed in the side wall of the shell, at least part of each cooling fin is exposed out of the window, and then the radiator can be arranged externally, so that heat of the control assembly in the shell can be dissipated conveniently, the temperature in the shell is effectively reduced, the service life of the control assembly is prolonged, and the service life of the control assembly is prolonged. And the control assembly with high power can be selected, so that the control assembly can be matched with various commercial refrigerators with relatively high power.

Description

Technical Field

[0001] The utility model relates to the field of refrigerators, in particular to a frequency conversion control device. Background Art

[0002] In conventional refrigerators, a variable frequency control device is typically sold together with the compressor. Due to the large size and high power consumption of commercial refrigerators, the compressor power is relatively high, reaching a peak of 600W. Consequently, the variable frequency control device used for this compressor also needs to be high-power, which typically requires high heat dissipation. Conventional radiators are typically installed inside the variable frequency control device, which often results in suboptimal heat dissipation. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an improved frequency conversion control device.

[0004] The technical solution adopted by the utility model to solve the technical problem is to construct a frequency conversion control device, including:

[0005] The housing has an accommodating cavity formed on its inner side and includes at least one side wall; at least one of the side walls is provided with an accommodating groove, the accommodating groove is communicated with the accommodating cavity, and a window is provided on a side opposite to the accommodating cavity;

[0006] A control component is accommodated in the accommodating cavity;

[0007] The radiator has a plurality of heat dissipation fins arranged at intervals. The radiator is installed in the accommodating groove, and each of the heat dissipation fins is at least partially exposed outside the window.

[0008] In some embodiments, a mounting opening is provided on one side of the accommodating groove, and the heat sink slides into the accommodating groove through the mounting opening.

[0009] In some embodiments, the frequency conversion control device further includes a positioning structure;

[0010] The positioning structure is arranged at one end of the accommodating groove where the installation opening is provided.

[0011] In some embodiments, the bottom wall of the accommodating groove is provided with a positioning hole at the end having the mounting opening;

[0012] The positioning structure is detachably mounted on the positioning hole.

[0013] In some embodiments, a through hole is provided on the bottom wall of the accommodating groove, and the through hole is connected to the accommodating cavity for conducting heat of the control component to the radiator.

[0014] In some embodiments, the heat sink further comprises a substrate, and a plurality of heat sinks are arranged on the substrate at intervals;

[0015] And / or, the control component includes a circuit board and a control circuit arranged on the circuit board.

[0016] In some embodiments, the housing includes a shell and a cover; the shell is provided with an opening; the cover covers the opening;

[0017] The cover body is provided with a first clamping structure, and the first clamping structure is embedded in the shell;

[0018] A second clamping structure that cooperates with the first clamping structure is provided on the inner side of the shell.

[0019] In some embodiments, a wire hole is provided on one side of the housing;

[0020] The frequency conversion control device further includes a wire pressing structure provided at the wire passing hole.

[0021] In some embodiments, a first mounting structure is provided on at least one of the side walls of the housing;

[0022] The first mounting structure includes a first mounting hole, and a central axis of the first mounting hole extends along a first direction of the housing; the first direction is perpendicular to the direction of the window.

[0023] In some embodiments, a second mounting structure is provided on at least one of the side walls of the housing;

[0024] The second mounting structure includes a second mounting hole, the central axis of the second mounting hole extends along a second direction of the housing, and the second direction is the same as the direction of the window.

[0025] The implementation of the variable frequency control device of the utility model has the following beneficial effects: the variable frequency control device arranges the radiator in the accommodating groove opened on the side wall of the shell and exposes each heat sink at least partially outside the window, thereby allowing the radiator to be externalized, thereby facilitating the heat dissipation of the control component in the shell, effectively reducing the temperature inside the shell, extending the service life of the control component, facilitating the selection of high-power control components, and thus being compatible with a variety of high-power commercial refrigerators. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0027] Figure 1 It is a structural diagram of a frequency conversion control device in some embodiments of the present utility model;

[0028] Figure 2 yes Figure 1 Another structural diagram of the frequency conversion control device shown;

[0029] Figure 3 yes Figure 1 The structural decomposition diagram of the frequency conversion control device shown;

[0030] Figure 4 yes Figure 3 The schematic diagram of the housing structure of the frequency conversion control device shown;

[0031] Figure 5 yes Figure 4 A schematic structural diagram of the shell structure from another angle;

[0032] Figure 6 yes Figure 3 The schematic diagram of the heat sink structure of the frequency conversion control device shown;

[0033] Figure 7 yes Figure 3 The schematic diagram of the control components of the variable frequency control device shown. DETAILED DESCRIPTION

[0034] In order to provide a clearer understanding of the technical features, objectives, and effects of the present invention, a specific embodiment of the present invention is now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "upper," "lower," "bottom," "inner," "outer," etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are merely for the purpose of facilitating the description of the present invention and do not require the devices or components referred to to have specific directions. Therefore, they should not be construed as limitations on the present invention.

[0035] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "connection", "fixation", and "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0036] Figure 1 and Figure 2 The following illustrates some preferred embodiments of the frequency conversion control device of the present invention. This frequency conversion control device is used in a compressor and can be used together with the compressor in a refrigerator. This frequency conversion control device has the advantages of high power, excellent heat dissipation, simple structure, and wide applicability.

[0037] like Figure 1 and Figure 2 As shown, in some embodiments, the variable frequency control device may include a housing 10, a control assembly 20, and a heat sink 40. The housing 10 may be used to accommodate the control assembly 20. The control assembly 20 may be disposed within the housing 10 and may be connected to an external compressor. The heat sink 40 is mounted on the housing 10 and is at least partially external to the housing 10 and may be used to dissipate heat from the control assembly within the housing 10.

[0038] like Figure 3 As shown, in some embodiments, the entire housing 10 may be an injection molded part. In other embodiments, the entire housing 10 is not limited to an injection molded part and may be a metal part. The housing 10 may include a shell 11 and a cover 12. The shell 11 and the cover 12 are detachable.

[0039] like Figure 4 and Figure 5 As shown, in this embodiment, the housing 11 is generally rectangular and may include a plurality of side walls 111. Specifically, the housing 11 may include a first side wall 111a, a second side wall 111b, a third side wall 111c, a fourth side wall 111d, and a fifth side wall 111e. The second side wall 111b may be disposed opposite the third side wall 111c, and both may be perpendicularly connected to the first side wall 111a. The fourth side wall 111d and the fifth side wall 111e may be disposed opposite each other and may be connected to the first side wall 111a. The fourth side wall 111d and the fifth side wall 111e may be disposed between the second side wall 111b and the third side wall 111c, respectively. In some embodiments, a housing 10 may have an inner cavity 112 formed therein. Specifically, the cavity 112 may be defined by a first sidewall 111a, a second sidewall 111b, a third sidewall 111c, a fourth sidewall 111d, a fifth sidewall 111e, and the cover 12. In some embodiments, the housing 11 may have an opening 113 disposed opposite the first sidewall 111a. The first sidewall 111a may have two through-holes 114 disposed therein, each of which may communicate with the cavity 112 to transfer heat from the control assembly 20 to the heat sink 30.

[0040] In this embodiment, at least one side wall 111 of the housing 10 is provided with a receiving groove 115. The receiving groove 115 can be used to receive the radiator 30. The receiving groove 115 can be provided on the upper side wall 111a and on the outer side of the first side wall 111a. The receiving groove 115 can be connected to the receiving cavity 112. Specifically, the through hole 114 can be provided on the bottom wall of the receiving groove 115, and the receiving groove 115 and the receiving cavity 112 can be connected through the through hole 114. In some embodiments, a mounting port 1151 is provided on one side of the receiving groove 115, and the mounting port 1151 can be used for the radiator to slide into the receiving groove 115. In some embodiments, a window 116 is provided on the side of the receiving groove 115 opposite to the receiving cavity 112, and the window 116 can be used to expose the radiator 30, thereby facilitating the radiator 30 to dissipate heat, thereby improving the heat dissipation effect.

[0041] In some embodiments, a wire hole 117 may be provided on one side of the housing 10 . Specifically, the wire hole 117 may be provided on the fourth side wall 11 d , and may be used for passing a connection wire connected to the control assembly 20 .

[0042] A cable retaining structure 118 may be provided on one side of the housing 10. This retaining structure 118 may protrude from the outer side of the fourth side wall 11d and be located on one side of the cable hole 117, for retaining and positioning the connecting cable. Each retaining structure 118 is provided with a retaining hole 1181. The retaining holes 1181 may be two and may be generally U-shaped. In other embodiments, the retaining hole 1181 may not be limited to two and may be one or more than two.

[0043] In some embodiments, a first mounting structure 119 may be provided on at least one sidewall of the housing 10. This first mounting structure 119 can be used to mount the housing 10. Specifically, in some embodiments, the first mounting structure 119 may be provided on the third sidewall 111c of the housing 10. There may be two first mounting structures 119, located at either end of the length of the third sidewall 111c. Each first mounting structure 119 may include a first mounting seat 1191 and a first mounting hole 1192. The first mounting seat 1191 may extend along the width of the third sidewall 111c. The first mounting seat 1191 may have one or two first mounting holes 1192. In other embodiments, the number of first mounting holes 1192 on each mounting seat 1191 may not be limited to one or two, and may also include more than two, such as three. The central axis of the first mounting hole 1192 may extend along the first direction of the housing 10, that is, along the thickness of the third sidewall 111c. The variable frequency control device can be installed along the first direction by providing the first installation structure 119. The first installation hole 1192 can be used for screw assembly installation.

[0044] In some embodiments, a second mounting structure 110 may be provided on at least one side wall of the housing 10. This second mounting structure 110 can be used to mount the housing 10. Specifically, in some embodiments, two second mounting structures 110 may be provided, one at each end of the fourth side wall 111d of the housing 10, and located at one end of the opening 113. Each second mounting structure 110 may include a second mounting seat 1101 and a second mounting hole 1102. The second mounting seat 1101 protrudes from the outer side of the fourth side wall 111d and is provided with at least one second mounting hole 1102. In some embodiments, there may be only one second mounting hole 1102. The central axis of the second mounting hole 1102 extends along a second direction of the housing 10. This second direction may be aligned with the orientation of the window 116 and may be perpendicular to the first direction. The provision of the second mounting structures 110 allows the variable frequency control device to be mounted in the second direction. The second mounting holes 1102 can be used for mounting screws.

[0045] The cover 12 is configured to cover the opening 113 and is detachably connected to the housing 11. The cover 12 includes a covering portion 121 and an inserting portion 122. The covering portion 121 is configured to cover the opening 113. The inserting portion 122 protrudes from the covering portion 121. There may be multiple inserting portions 122, which may be spaced apart along the circumference of the covering portion 121 and can be inserted into the accommodating cavity 112 through the opening 113.

[0046] In some embodiments, a first snap-fitting structure 123 is provided on the cover body 12, and the first snap-fitting structure 123 can be provided on a side of the covering portion 121 on which the embedded portion 122 is provided. A first snap-fitting structure 123 can be provided in the interval between two adjacent embedded portions 122. In some embodiments, the first snap-fitting structure 123 can include an extending protrusion 1231 and a buckle hole 1232 provided on the extending protrusion 1231. In some other embodiments, the first snap-fitting structure 123 can also be directly provided on the embedded portion 122, and it is not limited to being a buckle hole 1232, but can also be a buckle. Correspondingly, in some embodiments, a second snap-fitting structure 1111 is provided on the inner side of the shell 11, and the second snap-fitting structure 1111 can be matched one-to-one with the first snap-fitting structure 123, and the two can be snap-fitted and fixed. In some embodiments, the second snap-fitting structure 1111 can be arranged on the inner side of each side wall 111 of the shell 11. It can be a snap-fitting protrusion, which can be arranged one-to-one corresponding to the buckle hole 1232. The cover body 12 can be connected and fixed to the shell 11 through the cooperation of the first snap-fitting structure 123 and the second snap-fitting structure 1111.

[0047] In some embodiments, the control component 20 can be accommodated in the accommodating cavity 112, and the control component 20 can include a circuit board 21 and a control circuit provided on the circuit board 21. The control circuit can include an EMC module circuit, an AC-DC power supply circuit, a three-phase bridge power control circuit, an MCU control circuit, etc. The EMC module circuit, the AC-DC power supply circuit, the three-phase bridge power control circuit, and the MCU control circuit are all existing conventional circuits. For details, please refer to Figure 7 .like Figure 7 As shown, the control circuit may include a gate component, a gate driver, a controller, a field effect transistor, an analog-to-digital conversion module, a step-down module, a processing circuit, a full bridge, an inrush current limiter, an EMI filter module, an overcurrent and overvoltage protection module, etc.

[0048] like Figure 6 As shown, in some embodiments, the heat sink 30 may include a base plate 31 and heat sink fins 32. The heat sink 32 may be multiple, and the multiple heat sink fins 32 may be spaced apart on the base plate 31. The heat sink 30 may be integrally formed with the base plate 31. The heat sink 30 may slide into the receiving groove 115 along the mounting opening 1151, and each heat sink 32 may at least partially pass through the window 116. In other words, each heat sink may at least partially be exposed outside the window 116. This facilitates heat dissipation from the control component 20 in the housing 10, effectively reducing the temperature inside the housing 10, extending the service life of the control component 20, facilitating the selection of a high-power control component 20, and thus being compatible with a variety of high-power commercial refrigerators.

[0049] For example Figure 3 As shown, in some embodiments, the frequency conversion control device further includes a positioning structure 40, which can be provided at one end of the accommodating groove 115 having the mounting opening 1151. The positioning structure 40 can be used to position and install the heat sink 30 to prevent the heat sink 30 from falling out of the mounting opening 1151. In some embodiments, the bottom wall of the accommodating groove 115 is provided with a positioning hole 1112 at the end having the mounting opening 1151. The positioning hole 1112 can be provided at one end of the first side wall 111a near the fourth side wall 111d, which can be used to install and position the positioning structure 40. In some embodiments, the positioning structure 40 can be detachably installed at the positioning hole 1112, thereby facilitating the disassembly and assembly of the heat sink 30. The positioning structure 40 can be a screw. Of course, it is understandable that in other embodiments, the positioning structure 40 is not limited to a screw and can be a positioning column or a bump. The positioning structure 40 can be partially protruded from the end surface of the positioning hole 1112 toward the outside, and the protruding height of the end surface of the protruding positioning hole 1112 can be equal to or greater than the thickness of the substrate 31 of the heat sink 30, thereby having a blocking effect on the substrate 31.

[0050] In some embodiments, the variable frequency control device further includes a wire pressing structure 50, which is detachably mounted on the wire clamping structure 118 and can be plugged into the wire clamping structure 118. In some embodiments, a wire pressing hole 51 can be provided on the wire pressing structure 50, and the wire pressing hole 51 can be arranged in a one-to-one correspondence with the clamping hole 1181 of the wire clamping structure 118, and the two can be combined to form a through hole.

[0051] It can be understood that the above embodiments only express the preferred implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A frequency conversion control device, characterized in that: include: The housing (10) has an accommodating cavity (112) formed on its inner side and includes at least one side wall (111); a accommodating groove (115) is provided on at least one of the side walls (111); the accommodating groove (115) is communicated with the accommodating cavity (112), and a window (116) is provided on a side opposite to the accommodating cavity (112); A control component (20) is accommodated in the accommodation chamber (112); The heat sink (30) has a plurality of heat sinks (32) arranged at intervals. The heat sink (30) is installed in the receiving groove (115), and each of the heat sinks (32) is at least partially exposed outside the window (116).

2. The frequency conversion control device according to claim 1, characterized in that: A mounting opening (1151) is provided on one side of the accommodating groove (115), and the radiator (30) slides into the accommodating groove (115) through the mounting opening (1151).

3. The frequency conversion control device according to claim 2, characterized in that: The frequency conversion control device further includes a positioning structure (40); The positioning structure (40) is arranged at one end of the accommodating groove (115) where the installation opening (1151) is provided.

4. The frequency conversion control device according to claim 3, characterized in that: The bottom wall of the accommodating groove (115) is provided with a positioning hole (1112) at one end having the installation opening (1151); The positioning structure (40) is detachably mounted on the positioning hole (1112).

5. The frequency conversion control device according to claim 1, characterized in that: The bottom wall of the accommodating groove (115) is provided with a through hole (114), and the through hole (114) is in communication with the accommodating cavity (112) for conducting heat of the control component (20) to the radiator (30).

6. The frequency conversion control device according to claim 1, characterized in that: The heat sink (30) further includes a base plate (31), and a plurality of heat sinks (32) are arranged on the base plate (31) at intervals. And / or, the control component (20) includes a circuit board (21) and a control circuit arranged on the circuit board (21).

7. The frequency conversion control device according to claim 1, characterized in that: The housing (10) comprises a shell (11) and a cover (12); an opening (113) is provided on the shell (11); and the cover (12) covers the opening (113); A first clamping structure (123) is provided on the cover body (12), and the first clamping structure (123) is embedded in the housing (11); A second clamping structure (1111) that cooperates with the first clamping structure (123) is provided on the inner side of the housing (11).

8. The frequency conversion control device according to claim 1, characterized in that: A wire hole (117) is provided on one side of the housing (10); The frequency conversion control device further includes a wire pressing structure (50) provided at the wire passing hole (117).

9. The frequency conversion control device according to claim 1, characterized in that: A first mounting structure (119) is provided on at least one side wall (111) of the housing (10); The first mounting structure (119) includes a first mounting hole (1192), wherein a central axis of the first mounting hole (1192) extends along a first direction of the housing (10); the first direction is perpendicular to the orientation of the window (116).

10. The frequency conversion control device according to claim 1, characterized in that: A second mounting structure (110) is provided on at least one side wall (111) of the housing (10); The second mounting structure (110) comprises a second mounting hole (1102), wherein a central axis of the second mounting hole (1102) extends along a second direction of the housing (10), and the second direction is the same as the direction of the window (116).

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