Cold and hot temperature change switching control machine

Abstract

The utility model discloses a cold and hot temperature change switching control machine which comprises a machine frame, a circulating pump, a heater, a water storage device, a water outlet pipe and a cold water pipe are arranged in the machine frame, one end of the cold water pipe is communicated with external cooling equipment, the other end of the cold water pipe is communicated with the water storage device, a water inlet end of the circulating pump is communicated with the water storage device, and a water outlet end of the heater is communicated with the water storage device. The water outlet end of the circulating pump is communicated with the water inlet end of the heater, the water outlet end of the heater is communicated with the water outlet pipe, the cold water pipe is communicated with the water outlet pipe through the L-shaped bent pipe, and a first switching valve is arranged on the L-shaped bent pipe. The utility model can realize rapid cold and hot conversion, and is easy to control.

Description

Technical Field

[0001] This utility model relates to rapid temperature control equipment, and more particularly to a cold and hot temperature conversion control machine. Background Technology

[0002] Currently, precision temperature control equipment is frequently required in industrial settings such as novel composite material manufacturing, fine chemicals, and biopharmaceuticals. This equipment must possess rapid thermal response characteristics to meet dynamic and complex production demands. However, traditional temperature control equipment is limited by the thermal inertia of the heat transfer medium, requiring prolonged alternating cycles to heat / cool and regulate the medium's temperature. This hysteresis effect leads to an exponential increase in energy consumption, resulting in an energy efficiency ratio below 35%. Furthermore, manually adjusted temperature settings are ill-suited to the complex and dynamic temperature adjustment requirements of various industries, including novel composite material manufacturing, fine chemicals, and biopharmaceuticals. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a cold and hot temperature conversion controller that can realize rapid cold and hot changes and is easy to control, in order to overcome the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] A temperature-controlled switching controller includes a frame, within which are a circulating pump, a heater, a water reservoir, an outlet pipe, and a cold water pipe. One end of the cold water pipe is connected to an external cooling device, and the other end is connected to the water reservoir. The inlet of the circulating pump is connected to the water reservoir, and the outlet of the circulating pump is connected to the inlet of the heater. The outlet of the heater is connected to the outlet pipe. The cold water pipe and the outlet pipe are connected by an L-shaped bend, and a first switching valve is provided on the L-shaped bend.

[0006] Preferably, the heater is located above the circulating pump, and the water reservoir is vertically located adjacent to the heater and the circulating pump.

[0007] Preferably, the outlet of the circulating pump and the inlet of the heater are connected by a Z-shaped bend.

[0008] Preferably, the side of the frame is provided with a side cover, and the side cover is provided with a heat dissipation grid.

[0009] Preferably, the end of the water outlet pipe is provided with a first connecting flange, and the end of the cold water pipe is provided with a second connecting flange.

[0010] Preferably, the cold water pipe is provided with a second switching valve, and the outlet pipe is provided with a third switching valve.

[0011] Preferably, the frame is provided with a stepped section, and a controller is provided on the stepped section. The first switching valve, the second switching valve and the third switching valve are respectively electrically connected to the controller.

[0012] In the cold and hot temperature conversion control machine disclosed in this utility model, when the downstream equipment needs to be heated, the circulating pump operates and the heater is used to quickly heat the water, which is then transported to the controlled equipment through the outlet pipe. Since the cold water pipe and the outlet pipe are connected by the L-shaped bend, when the downstream equipment needs to be cooled, it is only necessary to control the circulating pump and the heater to stop working, and at the same time control the first switching valve to open, so that the cold water supplied by the external cooling equipment can be directly transported to the controlled equipment. This not only facilitates control, but also avoids the lag effect caused by the excessively long water path, and better realizes the function of rapid cold and hot conversion. Attached Figure Description

[0013] Figure 1 This is a perspective view of the temperature conversion control machine for heating and cooling according to this utility model;

[0014] Figure 2 This is a partial exploded view of the temperature conversion control machine for heating and cooling according to this utility model;

[0015] Figure 3 The internal structure of the cooling and heating temperature conversion control machine of this utility model Figure 1 ;

[0016] Figure 4 The internal structure of the cooling and heating temperature conversion control machine of this utility model Figure 2 ;

[0017] Figure 5 The internal structure of the cooling and heating temperature conversion control machine of this utility model Figure 3 ;

[0018] Figure 6 The internal structure of the cooling and heating temperature conversion control machine of this utility model Figure 4 . Detailed Implementation

[0019] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0020] This utility model discloses a cold and hot temperature conversion control machine, combined with Figures 1 to 6As shown, it includes a frame 1, within which a circulating pump 2, a heater 3, a water reservoir 4, an outlet pipe 5, and a cold water pipe 6 are provided. One end of the cold water pipe 6 is connected to an external cooling device, and the other end of the cold water pipe 6 is connected to the water reservoir 4. The inlet of the circulating pump 2 is connected to the water reservoir 4, and the outlet of the circulating pump 2 is connected to the inlet of the heater 3. The outlet of the heater 3 is connected to the outlet pipe 5. The cold water pipe 6 and the outlet pipe 5 are connected by an L-shaped bend 7, and a first switching valve 8 is provided on the L-shaped bend 7.

[0021] In the above structure, when the downstream equipment needs to be heated, the circulating pump 2 operates and the heater 3 is used to quickly heat the water, which is then transported to the controlled equipment through the outlet pipe 5. Since the cold water pipe 6 and the outlet pipe 5 are connected by the L-shaped bend 7, when the downstream equipment needs to be cooled, it is only necessary to control the circulating pump 2 and the heater 3 to stop working, and at the same time control the first switching valve 8 to open, so that the cold water supplied by the external cooling equipment can be directly transported to the controlled equipment. This not only facilitates control, but also avoids the lag effect caused by the excessively long water path, and better realizes the function of rapid hot and cold conversion.

[0022] To make the internal structure of the frame 1 more compact, in this embodiment, the heater 3 is located above the circulating pump 2, and the water storage tank 4 is vertically located adjacent to the heater 3 and the circulating pump 2.

[0023] As a preferred embodiment, the outlet of the circulating pump 2 is connected to the inlet of the heater 3 via a Z-shaped bend 9.

[0024] In a preferred embodiment of this invention, the circulating water heating module consists of a circulating pump and an electric heating element. An adaptive PID algorithm is used for closed-loop control of the heating process, combined with a gradient heating strategy to ensure circulating water temperature control accuracy of ±1℃. The external cooling module integrates an industrial cooling tower, forming a complementary control with the heating system. The cooling switching module consists of an intelligent regulating valve group and a dynamic flow valve group, achieving a temperature change response of less than 1 second for the controlled equipment through intelligent switching technology of hot and cold circuits. The energy storage unit adopts a multi-stage extended water tank array with a built-in constant-temperature self-circulation mechanism, maintaining thermal inertia buffering under non-temperature-regulating conditions, effectively reducing system energy consumption. The intelligent water replenishment unit is equipped with a variable frequency water replenishment pump and dual redundant control valves, achieving water supply stability through pressure adaptive regulation and ensuring continuous system operation.

[0025] In order to provide shielding and protection on the outside of the rack, in this embodiment, the rack 1 is provided with a side cover 10, and the side cover 10 is provided with a heat dissipation grid.

[0026] As a preferred embodiment, the end of the water outlet pipe 5 is provided with a first connecting flange 50, and the end of the cold water pipe 6 is provided with a second connecting flange 60. In the above structure, based on the first and second connecting flanges, the water outlet pipe 5 and the cold water pipe 6 can be reliably connected to the corresponding equipment.

[0027] In this embodiment, a second switching valve 14 is provided on the cold water pipe 6, and a third switching valve 15 is provided on the outlet pipe 5. Further, a step portion 12 is provided on the frame 1, and a controller 13 is provided on the step portion 12. The first switching valve 8, the second switching valve 14, and the third switching valve 15 are electrically connected to the controller 13. In this embodiment, by providing the step portion 12, the controller 13 can be reliably fixed, and the entire machine can be made more compact.

[0028] Regarding the control section, in a preferred embodiment of this invention, the PLC central controller uses multi-sensor data fusion technology to analyze parameters such as temperature, flow rate, and pressure in real time, dynamically optimizing the target temperature setpoint. The system provides a dual-modal temperature control strategy: under steady-state conditions, the heating module operates in a closed-loop manner to maintain the reference temperature of the energy storage unit; through transient adjustment of the cooling switching module, it automatically switches between hot and cold circuits, simultaneously activating independent control functions for multiple temperature zones. The control program incorporates an energy efficiency optimization algorithm, achieving a heat recovery efficiency >92%, a comprehensive energy saving rate of over 25%, and supports expanded industrial IoT applications.

[0029] In a preferred embodiment of this invention, the hot water / cold water switching temperature control unit has three operating modes: cooling mode, heating mode, and constant temperature self-circulation mode, which are adaptively adjusted by the PLC control unit.

[0030] In cooling mode, when the equipment needs rapid cooling, the PLC program activates the cooling mode. At this time, the heating module enters a self-circulating standby state and does not output heat. The cooling module then begins operation, using piping connections to introduce low-temperature circulating water from an external water tower into the controlled equipment for rapid cooling. Simultaneously, the high-temperature circulating water remaining in the controlled equipment's piping is returned to the heating module through a specific pipeline. This cycle continues until the controlled equipment temperature drops to the set value.

[0031] In heating mode, when the temperature of the controlled equipment needs to be raised rapidly, the PLC program switches to heating mode. At this time, the cooling module is turned off, and high-temperature circulating water is pumped from the energy storage unit to the controlled equipment to transfer heat and promote its temperature rise. The low-temperature circulating water remaining in the controlled equipment flows back to the cooling module through the pipeline to prepare for the next heating cycle. This cycle continues until the temperature of the controlled equipment reaches the target value.

[0032] In the constant-temperature self-circulation mode, when the temperature of the controlled equipment needs to be kept stable, the PLC program switches to this mode. In this mode, the PLC uses a PID algorithm to precisely control the power output of the heating and cooling modules based on real-time temperature feedback. When the temperature shows a downward trend, the heating module is activated appropriately; conversely, when the temperature rises, the cooling module is activated, thus maintaining the temperature of the controlled equipment within a very small fluctuation range.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A temperature-controlled switching controller for both heating and cooling, characterized in that, The device includes a frame (1), which contains a circulating pump (2), a heater (3), a water reservoir (4), an outlet pipe (5), and a cold water pipe (6). One end of the cold water pipe (6) is connected to an external cooling device, and the other end of the cold water pipe (6) is connected to the water reservoir (4). The inlet of the circulating pump (2) is connected to the water reservoir (4), and the outlet of the circulating pump (2) is connected to the inlet of the heater (3). The outlet of the heater (3) is connected to the outlet pipe (5). The cold water pipe (6) and the outlet pipe (5) are connected by an L-shaped bend (7), and a first switching valve (8) is provided on the L-shaped bend (7).

2. The temperature-changing control unit for heating and cooling as described in claim 1, characterized in that, The heater (3) is located above the circulating pump (2), and the water storage tank (4) is vertically located adjacent to the heater (3) and the circulating pump (2).

3. The temperature-changing control unit for heating and cooling as described in claim 2, characterized in that, The outlet of the circulating pump (2) is connected to the inlet of the heater (3) via a Z-shaped bend (9).

4. The temperature-changing control unit for heating and cooling as described in claim 1, characterized in that, The side of the frame (1) is provided with a side cover (10), and the side cover (10) is provided with a heat dissipation grid.

5. The temperature conversion control machine for hot and cold switching as described in claim 1, characterized in that, The end of the water outlet pipe (5) is provided with a first connecting flange (50), and the end of the cold water pipe (6) is provided with a second connecting flange (60).

6. The temperature conversion control machine for hot and cold switching as described in claim 1, characterized in that, The cold water pipe (6) is provided with a second switching valve (14), and the water outlet pipe (5) is provided with a third switching valve (15).

7. The temperature-changing control unit for heating and cooling as described in claim 6, characterized in that, The frame (1) is provided with a step (12), and the step (12) is provided with a controller (13). The first switching valve (8), the second switching valve (14) and the third switching valve (15) are electrically connected to the controller (13).

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