Instrument cabinet

Abstract

The utility model relates to the technical field of industrial instruments, in particular to an instrument cabinet which comprises a cabinet body, a temperature sensor and a temperature adjusting module, the temperature sensor and the temperature adjusting module are arranged in the cabinet body, the temperature adjusting module comprises a temperature control unit, a refrigeration unit, a heating unit, a first power supply circuit and a second power supply circuit, and the first power supply circuit is used for supplying power to the refrigeration unit. The first power supply circuit is used for supplying power to the heating unit and provided with a first intermediate relay, the second power supply circuit is used for supplying power to the heating unit and provided with a second intermediate relay, and the temperature control unit is in communication connection with the temperature sensor, the first intermediate relay and the second intermediate relay. And the temperature control unit is used for controlling the on-off of the first intermediate relay and the second intermediate relay according to the temperature in the cabinet measured by the temperature sensor. The internal temperature of the cabinet body is measured and adjusted, so that the internal temperature of the cabinet body is always kept in a proper temperature range, and an instrument is ensured not to be influenced by over-high and over-low external environment temperature of the cabinet body.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial instruments, in particular to an instrument cabinet. Background Art

[0002] The existing outdoor instrument cabinet has a very simple structure. As Figures 1-4 shown, the instrument 1 is installed in the cabinet body 2 of the cabinet. A waterproof awning 3 is arranged at the top of the cabinet body 2 to realize sunshade and waterproofing of the instrument 1. Although the side wall of the cabinet body 2 is usually provided with a heat dissipation structure such as heat dissipation louvers 4, due to the fact that the materials of the waterproof awning 3 and the cabinet body 2 are generally stainless steel materials, when the temperature is high in summer, only relying on the heat dissipation louvers 4, the inside of the cabinet body 2 cannot be effectively cooled, and the internal temperature of the cabinet body 2 can reach more than sixty degrees, which will cause irreversible damage to the precise electronic devices inside the instrument 1, resulting in the instrument 1 being unable to work properly. In addition, in some areas where the temperature is below minus ten degrees or even dozens of degrees in winter, devices such as the liquid crystal display screen of the instrument 1 that are not resistant to low temperatures will also be irreversibly damaged.

[0003] Therefore, when the environmental temperature is too high or too low, the existing outdoor instrument cabinet may seriously shorten the service life of the expensive instrument 1, or even directly cause damage, resulting in industrial accidents or greater losses of life and property. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an instrument cabinet to solve the problem that the existing outdoor instrument cabinet is easily affected by the environmental temperature and the internal instrument is easily damaged.

[0005] To achieve the above purpose, the utility model provides an instrument cabinet, which includes a cabinet body and a temperature sensor and a temperature adjustment module arranged in the cabinet. The temperature adjustment module includes a temperature control unit, a refrigeration unit, a heating unit, a first power supply circuit and a second power supply circuit. The first power supply circuit is used to supply power to the refrigeration unit, and a first intermediate relay is arranged on the first power supply circuit. The second power supply circuit is used to supply power to the heating unit, and a second intermediate relay is arranged on the second power supply circuit. The temperature control unit is communicatively connected with the temperature sensor, the first intermediate relay and the second intermediate relay. The temperature control unit is used to control the on-off of the first intermediate relay and the second intermediate relay according to the temperature inside the cabinet measured by the temperature sensor.

[0006] Optionally, the temperature control unit is pre-set with a temperature upper limit value and a temperature lower limit value. When the temperature inside the cabinet reaches the temperature upper limit value or the temperature lower limit value, the temperature control unit triggers an alarm and can output a corresponding switching quantity signal, and the switching quantity signal is used to control the on-off of the first intermediate relay and the second intermediate relay.

[0007] Optionally, the temperature sensor is a thermal resistance sensor, and the temperature control unit can receive the resistance signal sent by the thermal resistance sensor and convert it into a temperature value.

[0008] Optionally, the working voltages of the refrigeration unit and the heating unit are different, and the power supply sources of the first power supply circuit and the second power supply circuit are independent of each other.

[0009] Optionally, at least one heat dissipation shutter is provided on the side wall of the cabinet body, and a heat dissipation fan is provided at a position corresponding to the heat dissipation shutter inside the cabinet body.

[0010] Optionally, a waterproof awning is provided on the top of the cabinet body. The waterproof awning is of a hollow structure and is connected to the inside of the cabinet body.

[0011] Optionally, a plurality of heat dissipation holes are provided on the bottom wall of the outer edge of the waterproof awning.

[0012] Optionally, the cabinet body is made of stainless steel.

[0013] Optionally, a heat preservation layer is laid on the inner wall of the cabinet body.

[0014] Optionally, a backboard is provided inside the cabinet body. The backboard is made of bakelite, and the temperature sensor and the temperature adjustment module are both provided on the backboard.

[0015] In the instrument cabinet provided by the present utility model, there are at least one of the following beneficial effects:

[0016] 1) By arranging a temperature sensor inside the cabinet body to measure the temperature inside the cabinet in real time, and then configuring a temperature control unit to control the on-off of the first intermediate relay and the second intermediate relay according to the measured temperature inside the cabinet, thereby controlling the on-off of the first power supply circuit and the second power supply circuit, and further controlling the operation of the refrigeration unit and the heating unit to adjust the temperature inside the cabinet, so that the internal temperature of the cabinet body is always maintained within a suitable temperature range, ensuring that the instrument is not affected by too high or too low external environmental temperature of the cabinet body and can always work normally. This not only ensures that the expensive instrument is not damaged and extends its service life, but also can avoid industrial accidents and even losses of life and property caused thereby;

[0017] 2) By adding a heat dissipation fan at the position of the heat dissipation shutter, the heat dissipation effect can be further improved;

[0018] 3) By arranging heat dissipation holes on the bottom wall of the outer edge of the waterproof awning, on the one hand, the heat dissipation capacity of the instrument cabinet is improved, playing an auxiliary heat dissipation role, and on the other hand, air convection inside the cabinet is avoided, affecting the refrigeration effect of the refrigeration unit;

[0019] 4) By laying a heat-insulating layer on the inner wall of the cabinet body, the heat-insulating ability of the cabinet body can be improved, preventing excessive heat exchange between the cabinet body and the outside world, and reducing the power consumption of the heating unit and the refrigeration unit. Description of the Drawings

[0020] Those of ordinary skill in the art should understand that the provided drawings are used to better understand the present utility model and do not constitute any limitation to the scope of the present utility model. Among them:

[0021] Figure 1 is the front view of the existing outdoor instrument cabinet;

[0022] Figure 2 is the left view of the existing outdoor instrument cabinet;

[0023] Figure 3 is the schematic diagram of the internal structure of the existing outdoor instrument cabinet;

[0024] Figure 4 is the bottom view of the existing outdoor instrument cabinet;

[0025] Figure 5 is the front view of the instrument cabinet provided by an embodiment of the present utility model;

[0026] Figure 6 is the left view of the instrument cabinet provided by an embodiment of the present utility model;

[0027] Figure 7 is the schematic diagram of the internal structure of the instrument cabinet provided by an embodiment of the present utility model;

[0028] Figure 8 is the bottom view of the instrument cabinet provided by an embodiment of the present utility model.

[0029] Among them:

[0030] 1 - instrument; 2 - cabinet body; 3 - waterproof awning; 4 - heat dissipation louver;

[0031] 100 - cabinet body; 101 - temperature sensor; 102 - temperature control unit; 103 - refrigeration unit; 104 - heating unit; 105 - first intermediate relay; 106 - second intermediate relay; 107 - grounding copper bar; 108 - inlet hole; 109 - heat dissipation louver; 110 - heat dissipation fan; 111 - waterproof awning; 112 - heat dissipation hole; 113 - heat-insulating layer; 114 - back panel; 115 - cabinet door; 116 - glass window; 117 - instrument; 118 - AC220V to DC12V switching power supply; 119 - air switch; 120 - AC220V to DC24V switching power supply. Detailed Embodiment

[0032] To make the objectives, advantages, and features of the present utility model clearer, the following further elaborates on the present utility model in conjunction with the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are in a very simplified form and use non-precise scales, solely for the purpose of conveniently and clearly assisting in explaining the objectives of the embodiments of the present utility model. To make the objectives, features, and advantages of the present utility model more clearly understandable, please refer to the accompanying drawings. It should be noted that the structures, scales, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Any modification of the structure, change in the proportional relationship, or adjustment of the size, in the case of being the same or similar to the effects that the present utility model can produce and the objectives that can be achieved, should still fall within the scope covered by the technical content disclosed by the present utility model.

[0033] As used in the present utility model, the singular forms "a", "an", and "the" include plural objects unless the context clearly indicates otherwise. As used in the present utility model, the term "or" is generally used in the sense of including "and / or" unless the context clearly indicates otherwise. As used in the present utility model, the term "several" is generally used in the sense of including "at least one" unless the context clearly indicates otherwise. As used in the present utility model, the term "at least two" is generally used in the sense of including "two or more" unless the context clearly indicates otherwise. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include one or at least two of such features.

[0034] In the description of the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. 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 specific circumstances.

[0035] Please refer to Figures 5-8, this embodiment provides an instrument cabinet, including a cabinet body 100, a temperature sensor 101 and a temperature regulation module arranged inside the cabinet body 100. The temperature regulation module includes a temperature control unit 102, a refrigeration unit 103, a heating unit 104, a first power supply circuit and a second power supply circuit. The first power supply circuit is used to supply power to the refrigeration unit 103, and a first intermediate relay 105 is arranged on the first power supply circuit. The second power supply circuit is used to supply power to the heating unit 104, and a second intermediate relay 106 is arranged on the second power supply circuit. The temperature control unit 102 is communicatively connected to the temperature sensor 101, the first intermediate relay 105 and the second intermediate relay 106. The temperature control unit 102 is used to control the on / off of the first intermediate relay 105 and the second intermediate relay 106 according to the temperature inside the cabinet measured by the temperature sensor 101.

[0036] By arranging the temperature sensor 101 inside the cabinet body 100 to measure the temperature inside the cabinet in real time, and then configuring the temperature control unit 102 to control the on / off of the first intermediate relay 105 and the second intermediate relay 106 according to the measured temperature inside the cabinet, thereby controlling the on / off of the first power supply circuit and the second power supply circuit, and thus controlling the operation of the refrigeration unit 103 and the heating unit 104, the temperature inside the cabinet is adjusted, so that the internal temperature of the cabinet body 100 is always maintained within a suitable temperature range, ensuring that the instrument 117 is not affected by too high or too low external environmental temperature of the cabinet body 100 and can always work normally. This not only ensures that the expensive instrument 117 is not damaged and extends its service life, but also can avoid industrial accidents and even losses of life and property caused thereby.

[0037] It should be particularly emphasized that the temperature sensor 101, temperature control unit 102, refrigeration unit 103, heating unit 104, first power supply circuit, second power supply circuit and other functional modules, circuit designs and their communication connections in the instrument cabinet mentioned in the present utility model are all prior arts. The present utility model does not involve any improvement of computer programs, but is a combined design between existing functional modules.

[0038] Specifically, the temperature sensor 101 is, for example, a thermal resistance sensor, and the model of the temperature control unit 102 is, for example, Hongrun NHR-DN10 rail-mounted digital display instrument. The temperature control unit 102 can receive the resistance signal sent by the thermal resistance sensor and convert it into a temperature value. More preferably, the temperature control unit 102 can preset the upper temperature limit value and the lower temperature limit value in advance. When the temperature inside the cabinet reaches the upper temperature limit value or the lower temperature limit value, the temperature control unit 102 triggers an alarm and can output a corresponding switching quantity signal, and the switching quantity signal is used to control the on / off of the first intermediate relay 105 and the second intermediate relay 106.

[0039] In this embodiment, the instrument cabinet can switch between a first working mode, a second working mode and a third working mode;

[0040] When the temperature inside the cabinet is measured to be higher than the upper temperature limit value, the temperature control unit 102 outputs a first digital quantity signal, the instrument cabinet switches to the first working mode, the first intermediate relay 105 is turned on and closed, the first power supply circuit supplies power to the refrigeration unit 103, and the refrigeration unit 103 operates to lower the temperature inside the cabinet, ensuring that the temperature inside the cabinet is maintained below the upper temperature limit value;

[0041] When the temperature inside the cabinet is measured to be lower than the upper temperature limit value and higher than the lower temperature limit value, the instrument cabinet switches to the second working mode, both the first intermediate relay 105 and the second intermediate relay 106 are turned off, and both the refrigeration unit 103 and the heating unit 104 do not operate;

[0042] When the temperature inside the cabinet is measured to be lower than the lower temperature limit value, the temperature control unit 102 outputs a second digital quantity signal, the instrument cabinet switches to the third working mode, the second intermediate relay 106 is turned on and closed, the second power supply circuit supplies power to the heating unit 104, and the heating unit 104 operates to raise the temperature inside the cabinet, ensuring that the temperature inside the cabinet is maintained above the lower temperature limit value.

[0043] Optionally, the operating voltages of the refrigeration unit 103 and the heating unit 104 are different, and the power supply sources of the first power supply circuit and the second power supply circuit are independent of each other. In this embodiment, the refrigeration unit 103 is, for example, a semiconductor refrigerator, and its operating voltage is generally 12V. The heating unit 104 is, for example, a resistance wire heater, and its operating voltage is generally 24V. Due to the different operating voltages, different power supply sources can be set for independent power supply.

[0044] The power supply source of the refrigeration unit 103 can be an internal power source such as a battery, or an AC220V to DC12V switching power supply. The power supply source of the heating unit 104 can be an internal power source such as a battery, or an AC220V to DC24V switching power supply. The present utility model does not limit this.

[0045] In this embodiment, the refrigeration unit 103 uses an AC220V to DC12V switching power supply 118, which is externally connected to an AC220V power supply through an air switch 119. The heating unit uses an AC220V to DC24V switching power supply 120, which is also externally connected to an AC220V power supply through the air switch 119. In addition, the AC220V to DC24V switching power supply 120 can also be used to supply power to the temperature control unit 102 and the instrument 117.

[0046] Of course, the first power supply circuit and the second power supply circuit can also be designed so that the refrigeration unit 103 and the heating unit share a power supply source, or refrigeration unit 103 and heating unit with the same operating voltage are used. The present utility model does not limit this.

[0047] In this embodiment, a grounding copper bar 107 is further arranged in the cabinet body 100 for grounding each component in the cabinet body 100. An inlet hole 108 is arranged at the bottom of the cabinet body 100 for connecting the incoming and outgoing cables.

[0048] Preferably, at least one heat dissipation louver 109 is arranged on the side wall of the cabinet body 100, and a heat dissipation fan 110 is arranged at the position corresponding to the heat dissipation louver 109 in the cabinet body 100. By arranging the heat dissipation fan 110, the cabinet body 100 can be further cooled to improve the heat dissipation effect. In this embodiment, the heat dissipation fan 110 can also be powered by the first power supply circuit, that is, when the temperature inside the cabinet is measured to be higher than the upper temperature limit value, the first power supply circuit supplies power to both the refrigeration unit 103 and the heat dissipation fan 110 to reduce the temperature inside the cabinet.

[0049] Preferably, a waterproof awning 111 is arranged on the top of the cabinet body 100. The waterproof awning 111 is of a hollow structure and is connected to the inside of the cabinet body 100. The outer edge of the waterproof awning 111 extends out of the cabinet body 100 to achieve the functions of sunshade and waterproofing. More preferably, both the cabinet body 100 and the waterproof awning 111 can be made of stainless steel, and the two can be fixed as a whole by welding or other means.

[0050] More preferably, a plurality of heat dissipation holes 112 are arranged on the bottom wall of the outer edge of the waterproof awning 111. Since the waterproof awning 111 is of a hollow structure and is connected to the inside of the cabinet body 100, by arranging the heat dissipation holes 112 on the bottom wall of the outer edge of the waterproof awning 111, on the one hand, the heat dissipation capacity of the instrument cabinet is improved to play an auxiliary heat dissipation role, and on the other hand, air convection in the cabinet body 100 is avoided, which affects the refrigeration effect of the refrigeration unit 103. The present utility model does not specifically limit the shape, size, quantity and distribution mode of the heat dissipation holes 112. In this embodiment, the heat dissipation holes 112 are evenly distributed along the outer edge of the waterproof awning 111.

[0051] Preferably, the cabinet body 100 is made of stainless steel, which has good corrosion resistance and a longer service life outdoors.

[0052] More preferably, a heat preservation layer 113 is laid on the inner wall of the cabinet body 100. By arranging the heat preservation layer 113, the heat insulation ability of the cabinet body 100 is improved, excessive heat exchange between the cabinet body 100 and the outside is prevented, and the power consumption of the heating unit 104 and the refrigeration unit 103 is reduced.

[0053] Preferably, a back panel 114 is arranged in the cabinet body 100. The back panel 114 is made of bakelite, and the temperature sensor and the temperature adjustment module are both arranged on the back panel 114. The bakelite back panel 114 has stronger heat insulation ability and can be used to arrange components such as the temperature sensor 101, the temperature adjustment module and the instrument 117 to avoid damage caused by too high or too low temperature.

[0054] In addition, the cabinet body 100 is also provided with an openable and closable cabinet door 115, and the cabinet door 115 is also provided with a glass window 116 to facilitate observing the numerical display of the instrument 117. These are all conventional designs in the art, and the present utility model will not elaborate on them herein.

[0055] In this embodiment, the instrument cabinet can be used indoors or outdoors. The instrument cabinet can be directly fixed on structures such as walls, or support columns and other structures can be provided at the bottom of the cabinet body 100 for support. The present utility model does not limit this.

[0056] In summary, the embodiment of the present utility model provides an instrument cabinet. By arranging a temperature sensor 101 inside the cabinet body 100 to measure the temperature inside the cabinet in real time, and then configuring a temperature control unit 102 to control the on / off of the first intermediate relay 105 and the second intermediate relay 106 according to the measured temperature inside the cabinet, thereby controlling the on / off of the first power supply circuit and the second power supply circuit, and further controlling the operation of the refrigeration unit 103 and the heating unit 104 to adjust the temperature inside the cabinet, so that the internal temperature of the cabinet body 100 is always maintained within a suitable temperature range, ensuring that the instrument 117 is not affected by too high or too low external environmental temperatures of the cabinet body 100 and can always work normally. This not only ensures that the expensive instrument 117 is not damaged and extends its service life, but also can avoid industrial accidents and even losses of life and property caused thereby.

[0057] In addition, it should also be recognized that although the present utility model has been disclosed above with preferred embodiments, the above embodiments are not intended to limit the present utility model. For any person skilled in the art, without departing from the scope of the technical solution of the present utility model, many possible changes and modifications can be made to the technical solution of the present utility model by using the technical content disclosed above, or it can be modified into equivalent embodiments with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still belong to the scope of protection of the technical solution of the present utility model.

Claims

1. An instrument cabinet, characterized in that: It includes a cabinet and a temperature sensor and a temperature adjustment module arranged in the cabinet. The temperature adjustment module includes a temperature control unit, a refrigeration unit, a heating unit, a first power supply circuit and a second power supply circuit. The first power supply circuit is used to supply power to the refrigeration unit, and a first intermediate relay is provided on the first power supply circuit. The second power supply circuit is used to supply power to the heating unit, and a second intermediate relay is provided on the second power supply circuit. The temperature control unit is communicatively connected with the temperature sensor, the first intermediate relay and the second intermediate relay. The temperature control unit is used to control the on and off of the first intermediate relay and the second intermediate relay according to the temperature in the cabinet measured by the temperature sensor.

2. The instrument cabinet according to claim 1, characterized in that: The temperature control unit is pre-set with an upper temperature limit and a lower temperature limit. When the temperature inside the cabinet reaches the upper temperature limit or the lower temperature limit, the temperature control unit triggers an alarm and can output a corresponding switching signal, which is used to control the on and off of the first intermediate relay and the second intermediate relay.

3. The instrument cabinet according to claim 1, characterized in that: The temperature sensor is a thermal resistor sensor, and the temperature control unit can receive the resistance signal sent by the thermal resistor sensor and convert it into a temperature value.

4. The instrument cabinet according to claim 1, characterized in that: The operating voltages of the refrigeration unit and the heating unit are different, and the power supplies of the first power supply circuit and the second power supply circuit are independent of each other.

5. The instrument cabinet according to claim 1, characterized in that: At least one heat dissipation louver is arranged on the side wall of the cabinet, and a heat dissipation fan is arranged in the cabinet at a position corresponding to the heat dissipation louver.

6. The instrument cabinet according to claim 1, characterized in that: A waterproof canopy is arranged on the top of the cabinet, and the waterproof canopy is a hollow structure and is communicated with the interior of the cabinet.

7. The instrument cabinet according to claim 6, characterized in that: A plurality of heat dissipation holes are arranged on the bottom wall of the outer edge of the waterproof canopy.

8. The instrument cabinet according to claim 1, characterized in that: The cabinet is made of stainless steel.

9. The instrument cabinet according to claim 8, characterized in that: A heat-insulating layer is provided on the inner wall of the cabinet.

10. The instrument cabinet according to claim 1 or 8, characterized in that: A back plate is arranged in the cabinet, the material of the back plate is bakelite, and the temperature sensor and the temperature regulating module are both arranged on the back plate.

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