Multi-circuit hot and cold integrated temperature control equipment

Abstract

The utility model relates to a multi-circuit hot and cold integrated temperature control equipment, comprising a temperature control system and a cooling system, the temperature control system comprising an array of temperature control units connected in parallel, the cooling system comprising a water tank and a cooling unit connected to the water tank, the cooling unit being used to cool water in the water tank, the water tank being provided with a water outlet pipe with a cold water pump, each group of the temperature control units comprising a heating pipe, a media outlet and a media loop, the media outlet and the media loop being respectively connected to the heating pipe, so that the media forms a media circulation among the heating pipe, the media outlet, the media loop and the object mold, the water outlet pipe being respectively connected to the heating pipe of each group of the temperature control units, so that the temperature control system and the cooling system are arranged in an integrated manner, and the temperature of different object molds can be controlled by the cooling system and the temperature control unit, so that multi-point temperature control and low temperature zone temperature can be realized, and the arrangement is compact and space-saving.

Description

Technical Field

[0001] The utility model belongs to the technical field of temperature regulation, and in particular relates to a multi-circuit cold and hot integrated temperature regulation device. Background Art

[0002] At present, in the automotive and home appliance industries, it is usually necessary to produce a variety of plastic parts, and the production process of plastic parts involves temperature control equipment. The temperature control equipment on the market is mainly single-channel, that is, it can only control the temperature of a single object by setting a single set of temperatures. In addition, the setting range of temperature control equipment on the market is limited, and often has no cooling capacity, so it cannot correspond to temperature regulation in low temperature areas. Utility Model Content

[0003] In order to solve the above problems in the prior art, the utility model provides a multi-circuit integrated hot and cold temperature regulating device which can realize multi-point temperature control, low temperature zone temperature and has a compact arrangement to save space.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a multi-circuit hot and cold integrated temperature control equipment, which mainly comprises a temperature control system and a cooling system, the temperature control system comprises an array of temperature control units connected in parallel, the cooling system comprises a water tank and a cooling unit connected to the water tank, the cooling unit is used to cool the water in the water tank, the water tank is provided with an outlet pipe with a cold water pump, each group of the temperature control units comprises a heating pipe, a media outlet and a media loop, the media outlet and the media loop are respectively connected to the heating pipe, so that the media forms a media circulation among the heating pipe, the media outlet, the media loop and the object mold, the outlet pipe is respectively connected to the heating pipe of each group of temperature control units, so that the temperature control system and the cooling system are arranged in an integrated manner, and the temperature of different object molds is achieved through the cooling system and the temperature control unit.

[0005] Preferably, each set of temperature regulating units is provided with a drainage pipeline, one end of the drainage pipeline is connected to the heating pipe, and the other end of the drainage pipeline is connected to the water tank.

[0006] Preferably, a first bypass pipeline is arranged between the media outlet and the media loop, a float switch is arranged on the heating pipe, a second bypass pipeline is arranged between the float switch and the media outlet, and the second bypass pipeline is cross-connected with the drainage pipeline.

[0007] Preferably, the cooling unit includes an evaporator, a compressor, a condenser, and a thermal expansion valve. The first end of the evaporator is connected to the water tank, the second end of the evaporator is connected to the water outlet pipe of the water tank, the third end of the evaporator is connected to the condenser through a first pipeline, the thermal expansion valve is arranged on the first pipeline, the fourth end of the evaporator is connected to the compressor through a second pipeline, the condenser is connected to the compressor through a third pipeline, the condenser is used to cool the refrigerant gas discharged from the compressor, and a third bypass pipeline is arranged between the third pipeline and the first pipeline.

[0008] Preferably, a drying filter is arranged between the condenser and the thermal expansion valve.

[0009] Preferably, a high-pressure pressure gauge is provided in the third pipeline near the compressor, a low-pressure pressure gauge is provided in the second pipeline near the compressor, and a hot gas bypass valve is provided in the third bypass pipeline.

[0010] Preferably, the water outlet pipe is provided with a cold water pressure gauge, the water outlet pipe is connected to the heating pipe of each group of temperature control units through each water outlet branch pipe, and a cooling solenoid valve is provided in the water outlet branch pipe near the heating pipe.

[0011] Preferably, the media outlet is provided with a media pump, a temperature probe, a pressure gauge and a media outlet valve, and the media loop is provided with a media loop valve.

[0012] Preferably, the temperature control system includes ≥8 groups of temperature control units.

[0013] Preferably, the water tank is provided with an overflow pipe, one end of the overflow pipe is connected to the top of the water tank, the other end of the overflow pipe is connected to the bottom of the water tank, and the overflow pipe is provided with a water outlet.

[0014] The beneficial effects of the multi-circuit integrated hot and cold temperature regulating device of the utility model are:

[0015] Use multiple sets of parallel, common temperature control units to achieve multi-point control;

[0016] A centralized cooling system is configured on the primary side of the temperature control system to provide cold water to the temperature control unit so that the temperature control unit can also be temperature controlled in the low temperature area;

[0017] Compact structure, integrated temperature control system and cooling system, saving space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the multi-circuit integrated cooling and heating temperature regulating equipment of the utility model. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments.

[0020] like Figure 1 As shown, it is a specific embodiment of the multi-circuit integrated hot and cold temperature control device provided by the utility model, which is used for temperature control of the mold during the injection molding process. During each molding cycle, high-temperature plastic will enter and exit the mold, as well as the action of opening and closing the mold. It is a dynamic process. By using the integrated hot and cold temperature control device of the utility model, the combination of hot and cold can stabilize the temperature of the mold.

[0021] The integrated temperature control device includes a temperature control system and a cooling system. The temperature control system includes an array of temperature control units 5 connected in parallel, preferably more than 8 groups. The cooling system includes a water tank 1 and a cooling unit connected to the water tank 1. The cooling unit is used to cool the water in the water tank 1. The water tank 1 is provided with a water outlet pipe 3 with a cold water pump 4, and cold water is transported to the temperature control system through the cold water pump 4. Each group of the temperature control units 5 includes a heating box or a heating tube 6, a media outlet and a media loop. The media outlet and the media loop are respectively connected to the heating tube 6, so that the media forms a media circulation between the heating tube 6, the media outlet, the media loop, and the object mold. The heating tube 6 can control the heating element to heat the media / water to the set temperature through a temperature controller on the one hand, and can supply water and discharge the air in the heating tube and the media pipeline on the other hand. The water outlet pipe 3 is respectively connected to the heating pipe 6 of each group of temperature control units 5, so that the temperature control system and the cooling system are arranged in one piece, and multiple groups of temperature control units use an integrated cooling system, and the temperature control of different object molds is achieved through the cooling system and the temperature control unit.

[0022] Thus, multiple groups of temperature control units are connected in parallel and share a cooling system. By setting multiple groups of temperatures, multiple sets of molds or multiple parts of a set of molds can be temperature controlled. It is possible to control and adjust different molds in multiple areas at the same time, and PID control can be used to control multiple points of temperature with high temperature control accuracy; and the integrated cooling system can be used for wide range of temperature control.

[0023] The media outlet is provided with a media pump 8, a temperature probe 7, a pressure gauge and a media outlet valve. The media pump 8 delivers the media to the plastic forming mold or the extrusion forming roller and circulates the media in the pipeline. The temperature probe 7 is used to detect the temperature of the media outlet. The media loop is provided with a media loop valve. Through the media pump 8, the media flows out of the heating tube 6, passes through the media outlet temperature adjustment mold and the media loop, and returns to the heating tube 6. The heating tube 6 has a heating element for heating the media in the heating tube 6.

[0024] like Figure 1 As shown, each temperature regulating unit 5 is provided with a drainage pipeline 14, one end of the drainage pipeline 14 is connected to the heating pipe 6, and the other end of the drainage pipeline 14 is connected to the water tank 1. A control valve can be provided in the drainage pipeline 14 near the water tank.

[0025] like Figure 1 As shown, a first bypass pipeline 13 is provided between the media outlet and the media loop, that is, one end of the first bypass pipeline 13 is connected to the media outlet, and the other end is connected to the media loop. The heating tube 6 is provided with a float switch 10, which is used to detect the water level in the heating tube / heating tube, and is used to prevent the media pump from running idle and alarm when the media is insufficient. A second bypass pipeline 9 is provided between the float switch 10 and the media outlet, that is, one end of the second bypass pipeline 9 is connected to the float switch 10, and the other end is connected to the media outlet. The second bypass pipeline 9 and the drainage pipeline 14 are cross-connected.

[0026] like Figure 1 As shown, the water outlet pipe 3 is provided with a cold water pressure gauge, and the water outlet pipe is connected to the heating pipe 6 of each group of temperature adjustment units 5 through each water outlet branch pipe, and a cooling solenoid valve 11 is provided in the water outlet branch pipe near the heating pipe 6. Other control valves can also be provided in the water outlet branch pipe. The cooling solenoid valve 11 can be controlled by a temperature controller to cool the medium to a set temperature.

[0027] The water tank is provided with an overflow pipe 21, one end of the overflow pipe 21 is connected to the top of the water tank, the other end of the overflow pipe 21 is connected to the bottom of the water tank, and the overflow pipe 21 is provided with a water outlet.

[0028] like Figure 1As shown, the cooling unit includes an evaporator 5, a compressor 15, a condenser 16, and a thermal expansion valve 20. The compressor 15 is used to inhale low-temperature and low-pressure gas refrigerant and discharge high-temperature and high-pressure gas refrigerant after compression; the condenser 16 is used to cool the high-temperature and high-pressure refrigerant gas discharged by the compressor; the evaporator 5 evaporates the refrigerant liquid through heat exchange and absorbs heat from the medium water, thereby achieving the purpose of cooling the medium; the thermal expansion valve 20 throttles and reduces the pressure of the refrigerant and adjusts the refrigerant flow entering the evaporator. The first end of the evaporator 5 is connected to the water tank 1, and a water flow switch and an antifreeze switch are arranged on the connecting pipeline; the second end of the evaporator 5 is connected to the water outlet pipe 3 of the water tank, and a control valve is arranged on the connecting pipeline, and cold water can be circulated between the evaporator and the water tank through the cold water pump; the third end of the evaporator 5 is connected to the condenser 16 through the first pipeline, and the thermal expansion valve 20 is arranged on the first pipeline; the fourth end of the evaporator 5 is connected to the compressor 15 through the second pipeline; the condenser 16 is connected to the compressor 15 through the third pipeline, and the condenser 16 is used to cool the refrigerant gas discharged by the compressor, and a third bypass pipeline is arranged between the third pipeline and the first pipeline, and a hot gas bypass valve 19 is arranged on the third bypass pipeline. The condenser 16 is equipped with a cooling water inlet and a cooling water outlet. The hot gas bypass solenoid valve is installed at the steam outlet to discharge condensed water or non-condensable gas in the steam.

[0029] The refrigerant is compressed into a high-temperature and high-pressure gaseous substance in the compressor and then enters the condenser to be condensed. The heat released during the condensation process is taken away by the cooling water. After the refrigerant is condensed into a liquid state, the liquid refrigerant enters the throttling device to be depressurized and throttled. Finally, the low-pressure refrigerant liquid enters the evaporator to be evaporated. The heat of the water load in the refrigeration unit is absorbed and cooled during the evaporation of the refrigerant in the evaporator. The cooled water is transported to each temperature control unit by the water pump.

[0030] A drying filter is arranged between the condenser and the thermal expansion valve to filter out debris in the refrigeration system, such as metal chips, various oxides and dust, so as to prevent the debris from clogging the capillary tube or damaging the compressor.

[0031] A high-pressure pressure gauge 17 is provided in the third pipeline near the compressor 15, and a low-pressure pressure gauge 18 is provided in the second pipeline near the compressor 15. Specifically, the high-pressure pressure gauge 17 is installed at the exhaust port of the compressor 15 to detect the exhaust pressure of the compressor 15; the low-pressure pressure gauge 18 is installed at the intake port of the compressor 15 to detect the intake pressure of the compressor 15.

[0032] When the device of the utility model is performing temperature adjustment, a temperature probe is installed at the water outlet of the temperature control unit to detect the water outlet temperature. According to the process requirements, a temperature value SV is set, and the actual water outlet temperature value of the temperature control unit is PV. When the temperature probe detects that PV<SV, it means that the mold needs to be heated up, and the heating element of the heating tube is operated to heat the water, and then the water is sent to the mold by the media pump / water pump. At this time, the cooling solenoid valve is closed, and the water of the front-end cooling system does not enter the temperature control unit. When the temperature probe detects that PV>SV, it means that the mold needs to be cooled down, and the heating element of the heating tube stops running, the cooling solenoid valve opens, and the cold water of the front-end cooling system will enter the heating tube for cooling, and the cooled water will be sent to the mold through the media outlet.

[0033] The beneficial effects of the multi-circuit integrated hot and cold temperature regulating device of the utility model are:

[0034] Use multiple sets of parallel, common temperature control units to achieve multi-point control;

[0035] A centralized cooling system is configured on the primary side of the temperature control system to provide cold water to the temperature control unit so that the temperature control unit can also be temperature controlled in the low temperature area;

[0036] Compact structure, integrated temperature control system and cooling system, saving space.

[0037] In this specification, the utility model has been described with reference to its specific embodiments. However, it is obvious that various modifications and changes can be made without departing from the spirit and scope of the utility model. Therefore, the description and drawings should be regarded as illustrative rather than restrictive.

Claims

1. A multi-circuit integrated hot and cold temperature control device, characterized in that: It includes a temperature control system and a cooling system. The temperature control system includes an array of temperature control units connected in parallel. The cooling system includes a water tank and a cooling unit connected to the water tank. The cooling unit is used to cool the water in the water tank. The water tank is provided with a water outlet pipe with a cold water pump. Each group of the temperature control units includes a heating pipe, a media outlet and a media loop. The media outlet and the media loop are respectively connected to the heating pipe so that the media forms a media circulation among the heating pipe, the media outlet, the media loop and the object mold. The water outlet pipe is respectively connected to the heating pipe of each group of temperature control units so that the temperature control system and the cooling system are arranged in one piece. The temperature control of different object molds can be achieved through the cooling system and the temperature control unit.

2. The multi-circuit integrated hot and cold temperature control equipment according to claim 1, characterized in that: Each set of temperature regulating units is provided with a drainage pipeline, one end of the drainage pipeline is connected to the heating pipe, and the other end of the drainage pipeline is connected to the water tank.

3. The multi-circuit integrated hot and cold temperature control equipment according to claim 2, characterized in that: A first bypass pipeline is arranged between the media outlet and the media loop, a float switch is arranged on the heating pipe, a second bypass pipeline is arranged between the float switch and the media outlet, and the second bypass pipeline is cross-connected with the drainage pipeline.

4. The multi-circuit integrated hot and cold temperature control equipment according to claim 1, characterized in that: The cooling unit includes an evaporator, a compressor, a condenser, and a thermal expansion valve. The first end of the evaporator is connected to the water tank, the second end of the evaporator is connected to the water outlet pipe of the water tank, the third end of the evaporator is connected to the condenser through a first pipeline, the thermal expansion valve is arranged on the first pipeline, the fourth end of the evaporator is connected to the compressor through a second pipeline, the condenser is connected to the compressor through a third pipeline, the condenser is used to cool the refrigerant gas discharged from the compressor, and a third bypass pipeline is arranged between the third pipeline and the first pipeline.

5. The multi-circuit integrated hot and cold temperature control equipment according to claim 4, characterized in that: A drying filter is arranged between the condenser and the thermal expansion valve.

6. The multi-circuit integrated hot and cold temperature control equipment according to claim 4, characterized in that: A high-pressure pressure gauge is arranged in the third pipeline near the compressor, a low-pressure pressure gauge is arranged in the second pipeline near the compressor, and a hot gas bypass valve is arranged in the third bypass pipeline.

7. The multi-circuit integrated hot and cold temperature control equipment according to claim 1, characterized in that: The water outlet pipe is provided with a cold water pressure gauge, and the water outlet pipe is connected with the heating pipe of each group of temperature regulating units through each water outlet branch pipe, and a cooling solenoid valve is provided at a position close to the heating pipe in the water outlet branch pipe.

8. The multi-circuit integrated hot and cold temperature control equipment according to claim 1, characterized in that: The media outlet is provided with a media pump, a temperature probe, a pressure gauge and a media outlet valve, and the media loop is provided with a media loop valve.

9. The multi-circuit integrated hot and cold temperature control equipment according to claim 1, characterized in that: The temperature control system comprises ≥8 groups of temperature control units.

10. The multi-circuit integrated hot and cold temperature control equipment according to claim 1, characterized in that: The water tank is provided with an overflow pipeline, one end of the overflow pipeline is connected to the top of the water tank, the other end of the overflow pipeline is connected to the bottom of the water tank, and the overflow pipeline is provided with a water outlet.

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