Workshop temperature and humidity control system

Abstract

The utility model relates to the technical field of air conditioner control, and discloses a workshop temperature and humidity control system which comprises a control terminal, a circulating water system, a pump set, a first detection assembly arranged in a workshop and a plurality of air conditioner units, the circulating water system comprises a water supply pipeline, a working section, a water return pipeline and a recovery section which are sequentially connected, the recovery section is connected with a water supply pipeline through the pump unit, heat exchange exists between the working section and the air conditioning unit, the first detection assembly is used for obtaining the temperature and humidity of a workshop and outputting temperature and humidity signals, and the control terminal is used for receiving the temperature and humidity signals and comparing the temperature and humidity signals with preset signals to obtain signal differences; the control terminal is further used for controlling the starting number of the air conditioning units according to the signal difference. The control terminal automatically controls the starting number of the air conditioning units according to temperature and humidity signals detected in the workshop, and energy waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning control, in particular to a temperature and humidity control system for a workshop. Background Art

[0002] Since the cut seams of silicon steel are prone to rust after shearing, it is necessary to maintain a specific temperature and humidity environment in the workshop. Therefore, air conditioners need to be installed to maintain a constant temperature and humidity.

[0003] The influence range of a single air-conditioning unit is limited. Due to the large space of the workshop, multiple air-conditioning units are installed in the workshop. When the workshop temperature is close to the preset temperature, only a small number of air-conditioning units need to be started; when the workshop temperature differs greatly from the preset temperature, more air-conditioning units need to be started. However, the air-conditioning units cannot automatically adjust their start and stop during operation and need to be manually controlled. Content of the Utility Model

[0004] Aiming at the above-mentioned disadvantages of the prior art, the purpose of the utility model is to provide a temperature and humidity control system for a workshop to solve one or more problems in the prior art.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A temperature and humidity control system for a workshop includes a control terminal, a circulating water system, a pump set, a first detection component arranged in the workshop, and multiple air-conditioning units. The circulating water system includes a water supply pipeline, a working section, a water return pipeline, and a recovery section connected in sequence. Among them, the recovery section is connected to the water supply pipeline through a pump set unit. There is heat exchange between the working section and the air-conditioning units. The first detection component is used to obtain the temperature and humidity of the workshop and output temperature and humidity signals. The control terminal is used to receive the temperature and humidity signals and compare the temperature and humidity signals with preset signals to obtain a signal difference. The control terminal is also used to control the starting quantity of the air-conditioning units according to the signal difference.

[0007] Through the above technical solution, the control terminal automatically controls the starting quantity of the air-conditioning units according to the temperature and humidity signals detected in the workshop, reducing energy waste.

[0008] Further, the pump set includes a circulating pump unit and an air source heat pump unit. The circulating pump unit and the air source heat pump unit are connected in series in the recovery section in sequence. Among them, the circulating pump unit is closer to the water return pipeline than the air source heat pump unit.

[0009] Further, it further includes a second detection component. The second detection component is used to detect the starting quantity of the air-conditioning units and output corresponding workload detection signals. The circulating pump unit includes multiple circulating pumps. The control terminal is also used to receive the workload detection signals and control the starting quantity of the circulating pumps according to the workload detection signals.

[0010] Through the above technical solution, the starting quantity of the circulating pump is automatically adjusted according to the usage quantity of the air-conditioning units, reducing energy consumption on the basis of meeting the cooling flow rate.

[0011] Further, the second detection component includes a first pressure sensor, a second pressure sensor and a first controller. The first pressure sensor is installed in the water supply pipeline to detect the water pressure of the water supply pipeline and output a first pressure signal. The second pressure sensor is installed in the water return pipeline to detect the water pressure of the water return pipeline and output a second pressure signal. The first controller is used to receive the first pressure signal and the second pressure signal to generate a corresponding pressure difference and transmit the pressure difference as a workload detection signal to the control terminal.

[0012] Through the above technical solution, there is a certain pressure difference between the water pressure in the water supply pipeline and the water pressure in the water return pipeline to ensure that the cooling water can be circulated and transported at a certain flow rate. As the starting quantity of the air-conditioning units changes, the demand for the cooling water flow rate in the working section will change, resulting in fluctuations in the pressure difference. Therefore, the starting quantity of the circulating pump can be controlled through the feedback of the pressure difference to reduce the fluctuations in the pressure difference and meet the water supply demand.

[0013] Further, the second detection component includes a second controller and a plurality of electrical signal sensors corresponding to the air-conditioning units one by one. The electrical signal sensors are used to detect the electrical signals of the corresponding air-conditioning units and output corresponding air-conditioning electrical signals. The second controller is used to receive all the air-conditioning electrical signals and generate a corresponding sum signal as a workload detection signal.

[0014] Further, the electrical signal sensor is a voltage sensor.

[0015] Through the above technical solution, each voltage sensor obtains the voltage signal of the corresponding air-conditioning component, and after the voltage signals are aggregated, the control terminal determines the quantity of the currently turned-on air-conditioning components.

[0016] Further, the first detection component includes a third controller and a plurality of temperature and humidity sensors. The plurality of temperature and humidity sensors are distributed in the workshop to respectively generate corresponding temperature and humidity signals. The third controller is used to receive all the temperature and humidity signals and generate an average value signal, taking the average value signal as the temperature and humidity signal.

[0017] Through the above technical solution, the plurality of temperature and humidity sensors can respectively detect the temperature and humidity at various locations in the workshop, with more comprehensive sampling. Taking the average value of all the temperature and humidity as the overall temperature and humidity of the workshop is conducive to realizing the temperature and humidity regulation of the entire workshop.

[0018] Compared with the prior art, the beneficial technical effects of the present utility model are as follows: The control terminal automatically controls the starting quantity of the air-conditioning units according to the temperature and humidity signals detected in the workshop, and also automatically adjusts the starting quantity of the circulation pumps according to the usage quantity of the air-conditioning units, further reducing energy consumption on the basis of meeting the cooling flow rate. Brief Description of the Drawings

[0019] Figure 1 Fig. shows a system block diagram of a workshop temperature and humidity control system provided by the present utility model.

[0020] Figure 2 Fig. shows a distribution schematic diagram of the first detection component in the workshop provided by the present utility model.

[0021] Figure 3 Fig. shows a structural schematic diagram of the circulating water system provided by the present utility model.

[0022] Reference Numerals: 1, control terminal; 2, pump group; 21, circulating pump unit; 22, air source heat pump unit; 3, first detection component; 31, temperature and humidity sensor; 4, air-conditioning unit; 5, second detection component; 61, water supply pipeline; 62, working section; 63, return water pipeline; 64, recovery section. Detailed Description of the Embodiment

[0023] A workshop temperature and humidity control system, see Figure 1 , includes a control terminal 1, a circulating water system, a pump group 2, a first detection component 3 and a plurality of air-conditioning units 4. The control terminal 1 is a computer terminal.

[0024] The first detection component 3 is used to obtain the temperature and humidity of the workshop and output temperature and humidity signals. The control terminal 1 is used to receive the temperature and humidity signals, compare the temperature and humidity signals with a preset signal to obtain a signal difference, and then control the starting quantity of the air-conditioning units 4 according to the signal difference. The pump group 2 is used to provide power for the circulating water system, so that the cooling water can continuously circulate in the circulating water system, and the heat generated during the operation of the air-conditioning units 4 is taken away by the cooling water in the circulating water system to ensure that the air-conditioning units 4 do not overheat.

[0025] The first detection component 3 includes a plurality of temperature and humidity sensors 31 and a third controller. As Figure 2 shown, a plurality of temperature and humidity sensors 31 are distributed in the workshop to respectively generate corresponding temperature and humidity signals, and the indoor units of a plurality of air-conditioning units 4 are all installed in the workshop and are arranged in sequence along one side wall of the workshop. The third controller is used to receive all the temperature and humidity signals, generate an average value signal, and transmit the average value signal as the temperature and humidity signal to the control terminal 1.

[0026] For example, there are 3 air conditioning units 4 in the workshop, and the set temperature corresponding to the preset signal in the control terminal 1 is 26 °C. When the average temperature detected in the workshop reaches the set temperature + 3 °C or higher, that is, when the temperature corresponding to the average value signal is higher than or equal to 29 °C, the 3 air conditioning units 4 operate; when the temperature corresponding to the average value signal is between 27 °C and 29 °C, 2 air conditioning units 4 operate; when the temperature corresponding to the average value signal is between 26 °C and 27 °C, 1 air conditioning unit 4 operates.

[0027] See Figure 3 , the circulating water system includes a water supply pipe 61, a working section 62, a return water pipe 63, and a recovery section 64 connected in sequence. Among them, the recovery section 64 is connected to the water supply pipe 61 through the pump unit 2 to provide a complete channel for the water cycle. The pump unit 2 pumps low-temperature cooling water into the water supply pipe 61. The cooling water enters the working section 62 through the water supply pipe 61 and exchanges heat with the air conditioning unit 4 in the working section 62. The temperature of the cooling water rises, while the air conditioning unit 4 is cooled down. The high-temperature cooling water then enters the recovery section 64 through the return water pipe 63, and the high-temperature cooling water is restored to a low temperature again in the recovery section 64.

[0028] The pump unit 2 includes a circulating pump unit 21 and an air source heat pump unit 22. The circulating pump unit 21 and the air source heat pump unit 22 are connected in series in the recovery section 64 in sequence. Among them, the circulating pump unit 21 is closer to the return water pipe 63 than the air source heat pump unit 22. The high-temperature cooling water in the return water pipe 63 enters the recovery section 64 and is first sent into the air source heat pump unit 22 through the circulating pump unit 21, and then is cooled down through the air source heat pump unit 22.

[0029] The circulating pump unit 21 includes multiple circulating pumps, and the multiple circulating pumps are connected in parallel to the recovery section 64, as Figure 2 shown. During normal use, not all the circulating pumps must operate. The number of started circulating pumps is affected by the number of operating air conditioning units 4.

[0030] The multiple air conditioning units 4 are arranged in parallel. Correspondingly, the working section 62 is also provided with corresponding parallel branch pipes, and each branch pipe is also provided with a control valve for opening and closing the branch pipe. To ensure that there is sufficient water supply on the corresponding branch pipe when the air conditioning unit 4 is turned on, a water pressure difference is required between the water supply pipe 61 and the return water pipe 63. When the number of turned-on air conditioning units 4 increases, the control valves on the corresponding branch pipes will open accordingly, connecting the corresponding branch pipes to the water supply pipe 61, which increases the flow demand of the cooling water. Therefore, it is necessary to start more circulating pumps to increase the flow of the cooling water.

[0031] To control the starting quantity of the circulating pumps, the system further includes a second detection component 5. The second detection component 5 is used to detect the starting quantity of the air-conditioning unit 4 and output a corresponding workload detection signal, and the control terminal 1 is further used to receive the workload detection signal and control the starting quantity of the variable-frequency pumps according to the workload detection signal.

[0032] In one embodiment, the second detection component 5 includes a first pressure sensor, a second pressure sensor and a first controller. The first pressure sensor is installed in the water supply pipeline 61 to detect the water pressure of the water supply pipeline 61 and output a first pressure signal. The second pressure sensor is installed in the water return pipeline 63 to detect the water pressure of the water return pipeline 63 and output a second pressure signal. The first controller is used to receive the first pressure signal and the second pressure signal to generate a corresponding pressure difference and use the pressure difference as the workload detection signal.

[0033] A plurality of pressure ranges are preset in the control terminal 1, and each pressure range corresponds to a different number of circulating pumps to be started. After receiving the workload detection signal, the control terminal 1 can determine the corresponding number of circulating pumps to be started according to the pressure range in which the workload detection signal falls.

[0034] In another embodiment, the second detection component 5 includes a second controller and a plurality of electrical signal sensors corresponding to the air-conditioning units 4 one by one. The electrical signal sensors are used to detect the electrical signals of the corresponding air-conditioning units 4 and output corresponding air-conditioning electrical signals. The second controller is used to receive all the air-conditioning electrical signals and generate a corresponding sum signal as the workload detection signal. The electrical signal sensors are voltage sensors.

[0035] When the air-conditioning unit 4 is operating, the current will change with the change of the output power, and the voltage of the air-conditioning unit 4 is relatively stable. Therefore, by detecting the voltage of the air-conditioning unit 4, the number of all working air-conditioning units 4 can be accurately judged.

[0036] The first controller, the second controller and the third controller are all PLC controllers. And to reduce costs, the first controller and the third controller can be the same PLC controller, or the second controller and the third controller can be the same PLC controller.

[0037] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0038] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A workshop temperature and humidity control system, characterized in that: It includes a control terminal (1), a circulating water system, a pump group (2), a first detection component (3) arranged in the workshop, and multiple air-conditioning units (4). The circulating water system includes a water supply pipeline (61), a working section (62), a return water pipeline (63), and a recovery section (64) connected in sequence. Among them, the recovery section (64) is connected to the water supply pipeline (61) through the pump group (2). There is heat exchange between the working section (62) and the air-conditioning unit (4). The first detection component (3) is used to obtain the temperature and humidity of the workshop and output temperature and humidity signals. The control terminal (1) is used to receive the temperature and humidity signals and compare the temperature and humidity signals with preset signals to obtain a signal difference. The control terminal (1) is also used to control the starting quantity of the air-conditioning units (4) according to the signal difference.

2. The workshop temperature and humidity control system according to claim 1, wherein: The pump group (2) includes a circulating pump unit (21) and an air-source heat pump unit (22). The circulating pump unit (21) and the air-source heat pump unit (22) are connected in series in the recovery section (64) in sequence. Among them, the circulating pump unit (21) is closer to the return water pipeline (63) than the air-source heat pump unit (22).

3. The workshop temperature and humidity control system according to claim 2, characterized in that: It further includes a second detection component (5). The second detection component (5) is used to detect the starting quantity of the air-conditioning units (4) and output corresponding workload detection signals. The circulating pump unit (21) includes multiple circulating pumps. The control terminal (1) is also used to receive the workload detection signals and control the starting quantity of the circulating pumps according to the workload detection signals.

4. The workshop temperature and humidity control system according to claim 3, characterized in that: The second detection component (5) includes a first pressure sensor, a second pressure sensor, and a first controller. The first pressure sensor is installed in the water supply pipeline (61) to detect the water pressure of the water supply pipeline (61) and output a first pressure signal. The second pressure sensor is installed in the return water pipeline (63) to detect the water pressure of the return water pipeline (63) and output a second pressure signal. The first controller is used to receive the first pressure signal and the second pressure signal to generate a corresponding pressure difference and transmit the pressure difference as a workload detection signal to the control terminal (1).

5. The workshop temperature and humidity control system according to claim 3, characterized in that: The second detection component (5) includes a second controller and multiple electrical signal sensors corresponding to the air-conditioning units (4) one by one. The electrical signal sensors are used to detect the electrical signals of the corresponding air-conditioning units (4) and output corresponding air-conditioning electrical signals. The second controller is used to receive all the air-conditioning electrical signals and generate a corresponding sum signal as a workload detection signal.

6. The workshop temperature and humidity control system according to claim 5, characterized in that: The electrical signal sensor is a voltage sensor.

7. The workshop temperature and humidity control system according to claim 1, characterized in that: The first detection component (3) includes a third controller and multiple temperature and humidity sensors (31). The multiple temperature and humidity sensors (31) are distributed in the workshop to respectively generate corresponding temperature and humidity signals. The third controller is used to receive all the temperature and humidity signals and generate an average value signal, and use the average value signal as the temperature and humidity signal.

Images