Variable-frequency cooling-water machine

Abstract

The utility model relates to the technical field of cooling-water machines, in particular to a variable-frequency cooling-water machine which comprises a machine body and a refrigerating device arranged in the machine body, an installation cavity used for containing the refrigerating device is formed in the machine body, and ventilation openings are formed in at least two opposite sides of the side wall of the machine body. The side, close to the mounting cavity, of the ventilation opening is provided with an air cooling mechanism used for cooling the mounting cavity, the side, away from the mounting cavity, of the ventilation opening is provided with a self-opening-closing shutter used for preventing foreign matter from entering, and the machine body is further provided with a control system used for monitoring the internal temperature of the mounting cavity. And then the automatic opening and closing of the automatic opening and closing blind window and the work of the air cooling mechanism are controlled. According to the utility model, good heat radiation can be ensured, and external foreign matters are prevented from entering the machine body to interfere the work of internal devices.

Description

TECHNICAL FIELD

[0001] The utility model relates to cold water machine technical field especially relates to a variable frequency cold water machine. BACKGROUND

[0002] Variable frequency cold water machine is a kind of refrigeration equipment using variable frequency technology to control the speed of compressor, and its variable frequency regulation technology based on intelligent control system, can optimize refrigeration efficiency by constantly adjusting the working frequency of compressor. Specifically, the working frequency of compressor is adjusted by variable frequency driver, to realize accurate control of refrigeration capacity. When actual temperature is higher than set temperature, compressor will increase operating frequency, improve refrigeration efficiency, and quickly reduce temperature to set value. When temperature approaches set value, compressor reduces frequency to reduce energy consumption, to achieve high-precision temperature control effect.

[0003] But it is found that, when working, especially the external unit containing compressor will generate a large amount of heat in the running process, if not heat dissipation treatment, it is easy to affect the working efficiency of cold water machine, resulting in the decline of refrigeration efficiency, even the overheating protection of compressor leads to shutdown. When ventilating and dissipating heat, some foreign matters such as dust, fibers, metal chips, etc. will also enter the body, cover the cooling fan, affect its heat dissipation efficiency, and even deposit on the compressor and other components, cause electrical short circuit and damage the equipment. UTILITY MODEL CONTENT

[0004] In order to solve the problems in the above background art, the utility model provides a variable frequency cold water machine.

[0005] The utility model solves the technical problem by adopting the following scheme: a variable frequency cold water machine, comprising a body and a refrigeration device arranged in the body, the body has a mounting cavity for accommodating the refrigeration device, the body side wall is provided with at least two opposite ventilation openings, the ventilation opening is provided with a cooling mechanism for heat dissipation of the mounting cavity on one side close to the mounting cavity, and a self-opening and closing louver for preventing foreign matters from entering on the side away from the mounting cavity, the body is further provided with a control system for monitoring the temperature in the mounting cavity, and the self-opening and closing louver and the cooling mechanism are automatically opened and closed under the control of the control system.

[0006] By adopting the above technical scheme, the control system can accurately detect the temperature change of each component in the mounting cavity, and based on the temperature threshold, the opening or closing action of the cooling mechanism and the self-opening and closing louver is driven, to ensure that the louver can be kept closed to effectively block dust and other small particles when heat dissipation is not needed, and the louver can be quickly opened to guide the air flow path and promote air exchange for heat dissipation treatment of the body when heat dissipation is needed.

[0007] Further, a filter screen is arranged between the self-opening and closing louver and the cooling mechanism, and the filter screen is fixedly installed in the ventilation opening.

[0008] By adopting the above technical scheme, dust, particulate matters and other tiny impurities in the air can be further blocked from entering the inside of the machine body.

[0009] Further, a buckle assembly is arranged between the ventilation opening and the self-opening and closing louver, which comprises a buckling piece arranged on both sides of the self-opening and closing louver and a buckling groove arranged at a corresponding position of the inner wall of the ventilation opening.

[0010] By adopting the above technical scheme, the self-opening and closing louver can be quickly and conveniently installed on the ventilation opening, and can also be easily disassembled when maintenance or replacement is needed.

[0011] Further, the control system comprises a plurality of temperature sensors for monitoring the temperature in the installation cavity in real time and a controller embedded on the machine body.

[0012] By adopting the above technical scheme, the temperature of the device in the installation cavity can be obtained by arranging the temperature sensor, and the working of the air cooling mechanism and the self-opening and closing louver can be controlled according to the temperature change by the controller.

[0013] Further, an opening is arranged on one side of the machine body, and an observation door assembly is arranged in the opening, which is used for closing the machine body and can be opened to maintain the internal device.

[0014] By adopting the above technical scheme, the staff can conveniently maintain the refrigeration device in the installation cavity

[0015] In summary, the beneficial effects of the present application are as follows: the ventilation opening is arranged on the opposite two side walls of the machine body, and the air cooling mechanism and the self-opening and closing louver are arranged at each ventilation opening, which can effectively guide the air flow, reduce the temperature in the installation cavity, and ensure that the key components such as the condenser and the frequency conversion compressor can operate under better temperature conditions. The control system comprising the temperature sensor can monitor the internal temperature in real time to control the opening and closing of the self-opening and closing louver, so that when heat dissipation is needed, the self-opening and closing louver can be opened to cooperate with the air cooling mechanism for heat dissipation; and when heat dissipation is not needed, the self-opening and closing louver can be closed to cooperate with the filter screen to block dust, particulate matters and other impurities in the air from entering, thereby protecting the refrigeration device in the installation cavity.

[0016] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the content of the specification can be implemented, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structural schematic diagram of the embodiment.

[0018] Fig. 2 The exploded view of the embodiment is shown.

[0019] In the figure: 1, body; 11, mounting cavity; 2, refrigeration device; 3, vent; 4, air cooling mechanism; 5, self-opening and closing louver; 6, filter screen; 7, buckle assembly; 71, buckling piece; 72, buckling groove; 81, temperature sensor; 82, controller; 91, opening; 92, observation door assembly. DETAILED DESCRIPTION

[0020] In order to make the content of the utility model can be more easily and clearly understood, the following according to specific embodiment and combining with the drawings, the utility model is further explained.

[0021] It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like used herein indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. Unless otherwise stated, the meaning of "a plurality of" is two or more.

[0022] Unless otherwise expressly provided and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0023] As Figs. 1-2 As shown in the figure, a variable frequency water chiller, comprising a body 1 and a refrigeration device 2 arranged in the body 1, wherein the body 1 of the embodiment has a mounting cavity 11 for accommodating the refrigeration device 2, the body 1 has at least two opposite sides provided with a vent 3, and the vent 3 has an air cooling mechanism 4 arranged on the side close to the mounting cavity 11 for cooling the mounting cavity 11, and a self-opening and closing louver 5 arranged on the side away from the mounting cavity 11 for preventing foreign matter from entering, and the body 1 further has a control system for monitoring the temperature inside the mounting cavity 11, and further controlling the self-opening and closing louver 5 to automatically open and close and the air cooling mechanism 4 to work.

[0024] The body 1 is the main structure of the water chiller, and has an installation cavity 11 inside, which can accommodate the installation of refrigeration devices 2 such as variable frequency compressors, variable frequency drives, and condensers. The working frequency of the compressor can be adjusted by the variable frequency drive, so as to realize accurate control of the refrigeration capacity. When the temperature in the water chiller is higher than the set temperature, the compressor will increase the operating frequency to improve the refrigeration efficiency and quickly reduce the temperature to the set value. When the temperature approaches the set value, the compressor reduces the frequency to maintain the stability of the temperature and avoid excessive refrigeration. Considering that these components will inevitably generate heat accumulation during operation, in order to ensure efficient heat management and maintain the best working environment. In the four side walls of the body 1 of the embodiment, at least two opposite side walls are provided with heat dissipation openings to form an effective convection heat dissipation path. And two heat dissipation openings are provided on each side wall of the embodiment to enhance the air circulation efficiency, and a heat dissipation fan is fixedly arranged on the side of each heat dissipation opening close to the installation cavity 11 as a air cooling mechanism 4, which can guide fresh air from the outside to smoothly enter the inside of the body 1, and can effectively exhaust the hot air generated by the internal devices, so as to keep the temperature in the installation cavity 11 within a safe and suitable range. And a self-opening and closing louver 5 is fixedly arranged on the outer side of each heat dissipation opening away from the installation cavity 11, which covers the entire heat dissipation opening to prevent foreign matter from entering the installation cavity 11, and the frame, louver blade assembly, motor, and transmission device can convert the rotation of the motor into the self-opening and closing action of the louver blade. In addition, the control system of the body 1 is configured to detect the temperature of each component in the installation cavity 11, and according to the temperature threshold, control the opening and closing of the self-opening and closing louver 5, so that it can remain closed to block foreign matter from entering when ventilation is not needed, and can guide the air flow path in the open state; and the air cooling mechanism 4 can adjust the working state (such as the speed) of the fan according to the actual temperature change in the installation cavity 11 to ensure that sufficient cooling capacity is provided when needed.

[0025] As Fig. 2 shown, the self-opening and closing louver 5 and the air cooling mechanism 4 of the embodiment are provided with a filter screen 6, and the filter screen 6 is fixedly installed in the ventilation opening 3. The filter screen 6 is provided between the self-opening and closing louver 5 and the air cooling mechanism 4, which can further effectively block dust, particulate matter and other small impurities in the air from entering the inside of the body 1. And the outer wall frame of the filter screen 6 is fixed to the inner wall of the ventilation opening 3, which can provide mechanical support to ensure that the filter screen 6 can maintain a stable position. Even in a high wind pressure environment, the filter screen 6 can also be prevented from shifting or falling off.

[0026] As Fig. 2As shown, the ventilation opening 3 of the embodiment is further provided with a buckle assembly 7 between the ventilation opening 3 and the self-opening and closing shutter 5. The buckle assembly 7 includes buckle pieces 71 provided on both sides of the self-opening and closing shutter 5 and buckle grooves 72 provided on the inner wall of the ventilation opening 3 at the corresponding positions. The buckle pieces 71 are integrally arranged on the left and right sides of the self-opening and closing shutter 5, and the buckle grooves 72 are arranged at the corresponding positions on the inner wall of the ventilation opening 3. When the self-opening and closing shutter 5 is embedded in the ventilation opening 3, the buckle pieces 71 can be clamped and fixed into the corresponding buckle grooves 72, thereby ensuring fixed installation. When maintenance or replacement is required, the self-opening and closing shutter 5 can also be easily disassembled.

[0027] Further, the control system of the embodiment includes a plurality of temperature sensors 81 for monitoring the temperature in the installation cavity 11 in real time and a controller 82 embedded on the machine body 1. In the embodiment, a plurality of temperature sensors 81 are arranged inside the installation cavity 11 and distributed to different positions in the installation cavity 11, such as the negative poles of the compressor, the condenser and other components, to ensure that the temperature changes of the internal components in each region are obtained. The collected data are transmitted to the controller 82 embedded on the machine body 1 in real time, so that the control system can quickly respond to temperature fluctuations and timely adjust the heat dissipation.

[0028] As shown in Fig. 1 and Fig. 2 As shown, the machine body 1 of the embodiment is provided with an opening 91 on one side, and an observation door assembly 92 is arranged in the opening 91 for closing the machine body 1 and enabling opening for maintenance of the internal device. The opening 91 is provided on one side of the machine body 1, which can facilitate the maintenance of the refrigeration device 2 in the installation cavity 11 by the staff. The observation door assembly 92 is arranged at the opening 91 and is provided with a safety lock and a pull handle, which can close the machine body 1 during normal operation and open the machine body 1 when maintenance is required.

[0029] In summary, the embodiment has the following advantages. The embodiment is provided with ventilation openings 3 on at least two sides of the machine body 1, and air cooling mechanisms 4 and self-opening and closing shutters 5 are installed at each ventilation opening 3, which effectively guide the air flow and reduce the temperature in the installation cavity 11, thereby ensuring that the condenser and the variable frequency compressor and other key components can operate under optimal temperature conditions. In addition, the control system monitors the internal temperature in real time through the temperature sensors 81 and controls the opening and closing of the self-opening and closing shutter 5. When heat dissipation is required, the shutter 5 is opened to cooperate with the air cooling mechanism 4 for heat dissipation. When heat dissipation is not required, the shutter 5 is closed to cooperate with the filter screen 6 to block impurities such as dust and particulate matter in the air from entering, thereby protecting the refrigeration device 2 in the installation cavity 11.

[0030] The above-described embodiments are only preferred embodiments of the utility model, and cannot be used to limit the protection scope of the utility model. Any non-substantial changes and modifications made by those skilled in the art on the basis of the utility model belong to the protection scope of the utility model.

Claims

1. A variable frequency chiller, comprising a body and a refrigeration device disposed inside the body, characterized in that, The machine body has an installation cavity for accommodating a refrigeration device, and ventilation openings are arranged on at least two opposite sides of the machine body, wherein a side of the ventilation opening close to the installation cavity is provided with a wind cooling mechanism for cooling the installation cavity, and a side of the ventilation opening away from the installation cavity is provided with a self-opening and closing shutter for preventing foreign matters from entering, and the machine body is further provided with a control system for monitoring the temperature inside the installation cavity, and further controlling the self-opening and closing shutter to automatically open and close and the wind cooling mechanism to work.

2. The variable frequency water chiller according to claim 1, wherein, A filter screen is arranged between the self-opening and closing shutter and the wind cooling mechanism, and the filter screen is fixedly installed in the ventilation opening.

3. The variable frequency water chiller according to claim 1, wherein, A buckle assembly is further arranged between the ventilation opening and the self-opening and closing shutter, and the buckle assembly comprises buckle members arranged on two sides of the self-opening and closing shutter and buckle grooves arranged on corresponding positions of the inner wall of the ventilation opening.

4. The variable frequency water chiller according to claim 1, wherein, The control system comprises a plurality of temperature sensors for monitoring the temperature inside the installation cavity in real time and a controller embedded on the machine body.

5. The variable frequency water chiller according to claim 1, wherein, An opening is arranged on one side of the machine body, and an observation door assembly is arranged in the opening for closing the machine body and enabling the machine body to be opened for maintenance of the internal device.

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