Water-cooled radiator, frequency converter and water pump

Abstract

The utility model provides a water-cooling radiator for heat dissipation of a frequency converter, the frequency converter and a water pump, relates to the technical field of heat dissipation equipment, and solves the technical problem that the water-cooling heat dissipation mode leaks or contacts with electronic components during leakage to damage the electronic components. The water-cooling radiator is installed on a power device, is used for heat dissipation, and comprises a first heat dissipation block and a second heat dissipation block, a fluid containing cavity is formed in the first heat dissipation block so that heat exchange can be conducted when a heat exchange medium circulates. And the second heat dissipation block is arranged between the power device and the first heat dissipation block so as to perform primary water and electricity isolation between the heat exchange medium and the power device. According to the utility model, the water tank is prevented from overflowing under extremely special conditions, namely the water tank is filled with water, and the second heat dissipation block for realizing primary water-electricity isolation is arranged between the power device and the first heat dissipation block for realizing water-cooling heat exchange, so that electronic components in the frequency converter are effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation equipment, in particular to a water-cooled radiator, a frequency converter and a water pump for heat dissipation of a frequency converter. Background Art

[0002] The inverter is an electric power control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. As a device for converting electric energy, the inverter usually generates a certain amount of heat during operation. If the heat is not removed, the life of the electronic components in the internal circuit board will be reduced or even damaged. Reasonable heat dissipation methods have a great impact on improving the reliability and life of the inverter. Currently, the commonly used methods for cooling the inverter are: natural heat dissipation, air cooling, liquid cooling (water cooling, oil cooling, etc.).

[0003] The applicant has found that there are at least the following technical problems in the prior art: 1. The heat dissipation capacity of simple air cooling is insufficient, and if the heat exchange is not timely, it will result in the need for a higher-power inverter to drive a motor of the same power, which is likely to cause a waste of resources, not to mention natural heat dissipation; 2. The oil cooling method is actually relatively not economical; 3. The water cooling method usually uses circulating cold water to exchange heat with the components to be cooled, thereby achieving a heat dissipation effect, but this heat dissipation method not only requires an additional water source, resulting in a waste of resources, but also has the problem of cooling water leakage and damage to components. Utility Model Content

[0004] The purpose of the utility model is to provide a water-cooled radiator, a frequency converter and a water pump for heat dissipation of a frequency converter, so as to solve the technical problem in the prior art that water-cooled heat dissipation methods leak or come into contact with electronic components when leaking, causing damage to the electronic components.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a water-cooled radiator, which is installed on a power device for heat dissipation. The water-cooled radiator comprises: a first heat dissipation block and a second heat dissipation block; wherein:

[0007] The first heat sink block has a fluid accommodating cavity for heat exchange when a heat exchange medium flows through it;

[0008] The second heat sink block is arranged between the power device and the first heat sink block to perform primary water and electricity isolation between the heat exchange medium and the power device.

[0009] As a further improvement of the present invention, the second heat dissipation block is a solid rectangular structure and is made of a material with a high heat transfer coefficient.

[0010] As a further improvement of the present invention, the length and height of the second heat dissipation block are both greater than the length and height of the first heat dissipation block, so as to form a protective structure on the left and right sides and the top of the second heat dissipation block, and the secondary water and electricity isolation between the heat exchange medium and the power device is achieved through the protective structure.

[0011] As a further improvement of the utility model, the surface of the protective structure is provided with reflux microgrooves along the vertical direction, so that the overflowing heat exchange medium can flow out along the reflux microgrooves.

[0012] As a further improvement of the utility model, the number of the reflux microgrooves is several and they are evenly spaced along the width direction of the protective structure.

[0013] As a further improvement of the present invention, the first heat dissipation block is a rectangular hollow structure with an open top; a water inlet and a water outlet are respectively arranged on two side walls of the first heat dissipation block.

[0014] As a further improvement of the utility model, the water inlet and the water outlet are staggered, and the water inlet is located at the bottom of the side wall, and the water outlet is located at the top of the side wall.

[0015] As a further improvement of the present invention, a temperature sensor is provided in the fluid containing chamber; and / or a water level detector is provided in the fluid containing chamber.

[0016] As a further improvement of the present invention, the first heat dissipation block and the second heat dissipation block are integrally formed.

[0017] The utility model provides a frequency converter, which comprises a power device and a water-cooling radiator mounted on the power device.

[0018] The utility model provides a water pump, comprising a water pump body, a driving motor and the frequency converter; and also comprising a solenoid valve; wherein:

[0019] The frequency converter is connected to the drive motor to control the operating frequency of the drive motor;

[0020] The driving motor is connected to the water pump body to drive the water pump to start and stop;

[0021] The water pump body is connected to the water cooling radiator through a first pipeline, and is connected to a water demanding position through a second pipeline;

[0022] The solenoid valve is arranged on the first pipeline.

[0023] The water-cooled radiator provided by the utility model comprises a first heat dissipation block and a second heat dissipation block; a fluid containing cavity is arranged in the first heat dissipation block to realize water-cooled circulation heat exchange; and in order to avoid the problem that the fluid contacts the power device due to overflow or leakage during water-cooled heat exchange, thereby causing damage to the power device, the utility model arranges a second heat dissipation block that realizes primary water-electric isolation between the power device and the first heat dissipation block that realizes water-cooled heat exchange, thereby effectively protecting the electronic components in the inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a system composition diagram of the utility model water pump;

[0026] Figure 2 It is a side view structural schematic diagram of the water-cooled radiator of the utility model;

[0027] Figure 3 It is a three-dimensional structural schematic diagram of the water-cooled radiator of the utility model;

[0028] Figure 4 It is a top view of the water-cooling radiator of the utility model;

[0029] Figure 5 This is a water circulation flow diagram when the utility model water pump is in use;

[0030] Figure 6 This is a flow chart of the temperature detection and control solenoid valve when the utility model water-cooled radiator is in use;

[0031] Figure 7 This is a flow chart of the water level detection and control solenoid valve when the utility model water-cooled radiator is in use;

[0032] Figure 8 It is a structural schematic diagram of the reflux micro-grooves in the water-cooled radiator of the utility model;

[0033] Fig. 9 It is a three-dimensional structural schematic diagram of the second heat dissipation block in the water-cooled radiator of the utility model.

[0034] In the figure, 1 is a first heat sink; 11 is a fluid containing chamber; 12 is a water inlet; 13 is a water outlet; 14 is a temperature sensor; 15 is a water level detector; 2 is a second heat sink; 3 is a protective structure; 4 is a reflux microgroove; 5 is a frequency converter; 6 is a water pump body; 7 is a driving motor; 8 is a solenoid valve; 100 is a first pipeline; 200 is a second pipeline; 300 is a water-cooled radiator. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0036] Since the inverter 5 needs to process heat when working, the existing natural heat dissipation, air cooling, and oil cooling all have certain defects. If the heat dissipation effect is not good, it will cause resource waste and even device damage. The existing water cooling also has protection defects. If the protection is not good, it will cause water and electricity contact, which is easy to damage electronic devices. For this reason, the utility model provides a water-cooled radiator with a protection function and can achieve water-electricity isolation. It is installed on the power device, which is used for heat dissipation and can protect the power device from damage caused by water overflow or leakage.

[0037] like Figure 2 As shown, specifically, the water cooling radiator 300 of the utility model comprises: a first heat dissipation block 1 and a second heat dissipation block 2; wherein:

[0038] The first heat dissipation block 1 has a fluid containing cavity 11 for heat exchange when the heat exchange medium flows. Furthermore, in order to realize the circulation of the heat exchange medium, a water inlet 12 and a water outlet 13 are provided on the first heat dissipation block 1.

[0039] The second heat sink block 2 is arranged between the power device and the first heat sink block 1 to perform primary water and electricity isolation between the heat exchange medium and the power device.

[0040] Specifically, the second heat sink 2 is attached to the surface of the power device; the first heat sink 1 is attached to the surface of the second heat sink 2, and the three are stacked;

[0041] The water-cooled radiator 300 provided by the utility model comprises a first heat dissipation block 1 and a second heat dissipation block 2. A fluid containing chamber 11 is provided in the first heat dissipation block 1 to realize water-cooled circulation heat exchange. In order to avoid the problem that the fluid contacts the power device due to overflow or leakage during water-cooled heat exchange, thereby causing damage to the power device, the utility model provides a second heat dissipation block 2 for realizing primary water-electric isolation between the power device and the first heat dissipation block 1 for realizing water-cooled heat exchange, thereby effectively protecting the electronic components in the inverter 5.

[0042] As an optional implementation of the present invention, considering the shape of the power device in the variable frequency in the present invention, in this embodiment, as Fig. 9 As shown, the second heat dissipation block 2 is a solid rectangular structure and is made of a material with a high heat transfer coefficient.

[0043] The first heat exchange is performed between the second heat sink 2 and the power device, and then the heat exchange medium in the first heat sink 1 is used for water cooling to achieve the second heat exchange, which not only achieves a good heat exchange effect, but also ensures water-electricity isolation to prevent the power device from being damaged by contact with water.

[0044] In this embodiment, the second heat dissipation block 2 can be made of metal material, such as copper, iron, etc.

[0045] In order to further achieve the water and electricity isolation effect and further protect the safety of power devices, in the present embodiment, the length and height of the second heat dissipation block 2 are both greater than the length and height of the first heat dissipation block 1, so as to form a protective structure 3 on the left and right sides and the top of the second heat dissipation block 2, and the secondary water and electricity isolation between the heat exchange medium and the power devices is achieved through the protective structure 3.

[0046] like Figure 3 As shown, further, the bottom of the second heat sink 2 is arranged flush with the bottom of the first heat sink 1, and the left and right sides of the second heat sink 2 protrude from the first heat sink 1, and the protruding lengths of the two sides are the same, thereby forming a protective structure 3 similar to a step structure on the left and right sides of the second heat sink 2 and the first heat sink 1; the top of the second heat sink 2 is higher than the top of the first heat sink 1, thereby forming a protective structure 3 with a step structure between the second heat sink 2 and the top of the first heat sink 1.

[0047] By respectively arranging protective structures 3 on the left and right sides and the top of the first heat dissipation block 1 , a water flow shielding structure of a physical structure is formed to achieve a further water-electricity isolation effect.

[0048] In order to realize the rapid drainage of water flow and prevent excessive water flow from overflowing and crossing the protective structure 3 and contacting the power device, in this embodiment, the surface of the protective structure 3 is further improved.

[0049] like Figure 8 As shown, specifically, the protective structure 3 is provided with reflux microgrooves 4 along the vertical direction, so that the overflowing heat exchange medium can be drained out along the reflux microgrooves 4. When an extremely special situation occurs, that is, when the fluid containing tank is full and some water accidentally overflows, the water will be blocked by the protective structure 3 and will not flow to the second heat sink 2 or even the power device. The overflowing water droplets can flow out of the unit in time through the reflux microgrooves 4 provided on the protective structure 3 to avoid damage to the inverter 5.

[0050] It should be noted here that the reason why the reflux micro grooves 4 are arranged in a vertical direction is that the gravity of the water flow itself can be used for drainage and discharge, thereby realizing the rapid drainage of overflow.

[0051] Furthermore, in order to achieve a better drainage effect, the number of the reflux micro-grooves 4 is several and they are evenly spaced along the width direction of the protective structure 3 .

[0052] like Figure 4 As shown, and in this embodiment, the cross-sectional shape of the reflux microgroove 4 is semicircular. Of course, other shapes can also be used, such as trapezoidal, semi-elliptical, etc.

[0053] In this embodiment, since the second heat dissipation block 2 is a rectangular parallelepiped structure, in order to achieve the maximum fitting area for the best heat exchange, the first heat dissipation block 1 is also set to a rectangular parallelepiped shape. In order to accommodate more heat exchange fluid, the fluid accommodating cavity 11 in the first heat dissipation block 1 needs to be set to the maximum. Therefore, the first heat dissipation block 1 is set to a hollow rectangular parallelepiped structure with a thin wall, thereby achieving the maximum heat exchange effect;

[0054] For the convenience of observation, in this embodiment, the top of the first heat dissipation block 1 is an open structure and is not sealed;

[0055] A water inlet 12 and a water outlet 13 are respectively arranged on the left and right side walls of the first heat dissipation block 1 .

[0056] In order to fully perform heat exchange and prevent the heat exchange medium from flowing out quickly after entering, in this embodiment, the water inlet 12 and the water outlet 13 are staggered.

[0057] In order to achieve the flow effect of the heat exchange fluid in the fluid containing chamber 11 to ensure the maximum heat exchange efficiency, the water inlet 12 and the water outlet 13 are set to a maximum drop structure, that is, the water inlet 12 is set at the bottom of one side wall of the first heat dissipation block 1, and the water outlet 13 is set at the top of the other side wall opposite to the first heat dissipation block 1.

[0058] In order to realize automatic control and understand the state of the water-cooled heat exchanger, a temperature sensor 14 is provided in the fluid containing chamber 11 inside the first heat sink 1, which can obtain the real-time temperature of the fluid containing chamber 11, and dynamically adjust the opening size of the solenoid valve 8 by program, thereby realizing dynamic adjustment of the water inflow of the fluid containing chamber 11, avoiding water shortage or water overflow and waste, thereby avoiding damage to electronic components;

[0059] In order to prevent the heat exchange fluid in the first heat dissipation block 1 from overflowing, in the present embodiment, a water level detector 15 is provided at a certain position on the top of the fluid containing chamber 11, which can obtain the real-time height of the water level and control the switching state of the solenoid valve 8 by a program, thereby controlling the water content of the fluid containing chamber 11 to avoid insufficient water or overflow and waste of water, thereby avoiding damage to electronic components.

[0060] In order to facilitate processing and ensure good heat exchange effect, in this embodiment, the first heat sink 1 and the second heat sink 2 are integrally formed, thereby ensuring that the contact area between the first heat sink 1 and the second heat sink 2 is maximized and the heat exchange efficiency is improved.

[0061] In order to prevent the second heat dissipation block 2 from being too thick and thus reducing the water cooling effect, in the present embodiment, the thickness of the second heat dissipation block 2 is much smaller than the thickness of the first heat dissipation block 1 .

[0062] The utility model provides a frequency converter 5, comprising a power device and a water-cooled radiator mounted on the power device.

[0063] Because the power device is the device with the highest heat generation, a water-cooled radiator is arranged on its surface to ensure the safe operation of the power device, thereby ensuring the safe and stable operation of the inverter 5.

[0064] The inverter 5 provided by the utility model is provided with a water-cooled radiator having a first heat sink 1 and a second heat sink 2, wherein the first heat sink 1 is used for water cooling, and the second heat sink 2 is used for water-electricity isolation; the water-electricity isolation isolates the power device from the fluid containing cavity 11 of the second radiator to avoid the water flowing to the power device in an extremely special situation, i.e. when the water overflows, the water-electricity isolation has a positive significance for the reliability and life guarantee of the electronic components.

[0065] like Figure 1 As shown, the utility model provides a water pump, including a water pump body 6, a drive motor 7 and a frequency converter 5; and also includes a solenoid valve 8; wherein:

[0066] The frequency converter is connected to the driving motor 7 to control the operating frequency of the driving motor 7;

[0067] The driving motor 7 is connected to the water pump body 6 to drive the water pump to start and stop;

[0068] The water pump body 6 is connected to the water cooling radiator through the first pipeline 100, and is connected to the water demanding position through the second pipeline 200; in this embodiment, the water demanding position is the unit;

[0069] In order to prevent the fluid containing chamber 11 from overflowing with water, the solenoid valve 8 is arranged on the first pipeline 100 to control the water volume. The switch and opening size of the solenoid valve 8 are controlled by a software program to realize water volume control.

[0070] The water-cooled radiator includes a first heat dissipation block 1 and a second heat dissipation block 2. The first heat dissipation block 1 has a fluid containing cavity 11 for utilizing the water resources of a water pump. The water after water cooling converges with the water inlet of the water pump and flows into the water pump again for recycling. The second heat dissipation block 2 is a solid structure for water-electricity isolation, which effectively provides reliability and life guarantee for power devices.

[0071] During installation, the second heat sink 2 is close to the power device for water and electricity isolation; the first heat sink 1 is close to the second heat sink 2, the fluid accommodating chamber 11 is located inside the first heat sink 1 for water cooling, and the fluid accommodating chamber 11 has a water inlet 12 and a water outlet 13;

[0072] The water pump provided by the utility model is a water supply device for supplying water to the water-using side, and in order to achieve the adjustable water supply of the water pump, a drive motor 7 with a frequency converter 5 is provided; and in order to cool and dissipate the power devices in the frequency converter 5, the utility model uses the water in the water pump as a heat exchange fluid to cool and exchange heat for the frequency converter 5 without adding too much equipment and without introducing other water sources, that is, a water-cooled radiator for a water pump is provided, and the water used for the water cooling function comes from the water pump, so that the water in the water pump is recycled, which can reduce the damage to electronic components and improve the utilization of resources.

[0073] In addition, there is a water-electricity isolation module (protective structure 3, second heat sink 2) on the water-cooled radiator to effectively protect the electronic components in the inverter 5.

[0074] The water-cooling radiator with a water cooling function of the utility model can directly recycle the water in the water pump without adding additional heat dissipation equipment, and reasonably utilizes water resources without affecting the water output state of the water pump.

[0075] Since water has a higher specific heat capacity, it can take away more heat than air cooling, thus improving the heat dissipation efficiency. In addition, the direct use of water in the water pump is more economical than oil cooling. In summary, the effect of reducing costs and increasing efficiency can be achieved.

[0076] The water flow direction in the utility model water pump is as follows Figure 5As shown, the water flow of the external water source enters the water pump through the water inlet of the water pump, and then is divided into two paths. One path passes through the first pipeline 100 and the solenoid valve 8, and finally enters the fluid accommodating cavity 11 for water-cooled heat dissipation, and then returns to the water inlet of the water pump; the other path passes through the second pipeline 200 and enters other water-using parts of the unit to supply water to the unit.

[0077] The control method of the water-cooled radiator of the present utility model is as follows:

[0078] (1) A temperature sensor 14 is provided in the fluid accommodating cavity 11, which can read the real-time temperature data T and transmit it back for analysis. The high-temperature value is set as T1, and the low-temperature value is set as T2. If T > T1, the opening degree of the solenoid valve 8 increases, that is, the water flow rate increases, the water cooling is accelerated, and the temperature reduction is accelerated; until it returns to T < T1 again, otherwise the opening degree of the solenoid valve 8 remains unchanged, and the real-time temperature data is read and judged continuously. If T < T2, the opening degree of the solenoid valve 8 decreases, reducing the water flow rate to reduce waste, until it returns to T > T2 again, otherwise the opening degree of the solenoid valve 8 remains unchanged, and the real-time temperature data is read and judged continuously. The analysis of the real-time temperature data T is carried out in a loop, and the logic is as Figure 6 shown.

[0079] (2) A water level detector 15 is provided in the fluid accommodating cavity 11, which can read the real-time water level data H and transmit it back for analysis. The high-level value is set as H1, and the low-level value is set as H2. Among them, H1 and H2 are preset water level heights, H is the real-time water level height, and the logic in the figure is realized through software to realize the water level detection and control the opening and closing of the solenoid valve 8; if H > H1, the solenoid valve 8 is closed and the water supply is no longer continuous to avoid overflow caused by high pressure in the fluid accommodating cavity 11; until H < H2, the solenoid valve 8 is reopened. The analysis of the real-time water level data H is carried out in a loop, and the logic is as Figure 7 shown.

[0080] Here, it should be noted first that "inward" is the direction towards the center of the accommodating space, and "outward" is the direction away from the center of the accommodating space.

[0081] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the Figure 1 orientation or positional relationship shown, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0082] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0083] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0086] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A water-cooled radiator, characterized in that: Installed on the power device for heat dissipation, the water-cooled radiator includes: a first heat dissipation block and a second heat dissipation block; wherein: The first heat sink block has a fluid accommodating cavity for heat exchange when a heat exchange medium flows through it; The second heat sink block is arranged between the power device and the first heat sink block to perform primary water and electricity isolation between the heat exchange medium and the power device.

2. The water-cooled radiator according to claim 1, characterized in that: The second heat dissipation block is a solid rectangular structure and is made of a material with a high heat transfer coefficient.

3. The water-cooled radiator according to claim 1 or 2, characterized in that: The length and height of the second heat sink block are greater than those of the first heat sink block, so as to form a protective structure on the left and right sides and the top of the second heat sink block, and the secondary water and electricity isolation between the heat exchange medium and the power device is achieved through the protective structure.

4. The water-cooled radiator according to claim 3, characterized in that: The surface of the protection structure is provided with reflux microgrooves along the vertical direction, so that the overflowing heat exchange medium can flow out along the reflux microgrooves.

5. The water-cooled radiator according to claim 4, characterized in that: The number of the reflux microgrooves is several and they are evenly spaced along the width direction of the protective structure.

6. The water-cooled radiator according to claim 1, characterized in that: The first heat dissipation block is a rectangular hollow structure with an open top; a water inlet and a water outlet are respectively arranged on two side walls of the first heat dissipation block.

7. The water-cooled radiator according to claim 6, characterized in that: The water inlet and the water outlet are staggered, and the water inlet is located at the bottom of the side wall, and the water outlet is located at the top of the side wall.

8. The water-cooled radiator according to claim 6, characterized in that: A temperature sensor is arranged in the fluid containing chamber; and / or a water level detector is arranged in the fluid containing chamber.

9. The water-cooled radiator according to claim 1, characterized in that: The first heat dissipation block and the second heat dissipation block are integrally formed.

10. A frequency converter, characterized in that: The invention comprises a power device and a water-cooled radiator as claimed in any one of claims 1 to 9 which is mounted on the power device.

11. A water pump, characterized in that: It comprises a water pump body, a drive motor and a frequency converter as claimed in claim 10; it also comprises a solenoid valve; wherein: The frequency converter is connected to the drive motor to control the operating frequency of the drive motor; The driving motor is connected to the water pump body to drive the water pump to start and stop; The water pump body is connected to the water cooling radiator through a first pipeline, and is connected to a water demanding position through a second pipeline; The solenoid valve is arranged on the first pipeline.

Images