TWI680271B - Temperature-controllable heat exchange device - Google Patents

Abstract

A temperature-controllable heat exchange device includes a container containing a coolant, a pipeline unit that guides the coolant in and out of the container, and a heat exchange unit that performs heat exchange between the coolant and the refrigerant. The heat exchange unit includes a cooling pipeline, a compression motor constituting a circulation circuit through the cooling pipeline, a condensation group, an expansion valve, a heat exchanger and a shunt pipeline, and a proportional valve. The heat exchanger is suitable for heat exchange between the cooling liquid in the pipeline unit and the low-temperature refrigerant in the cooling pipeline. The branch line is connected to the cooling line. The proportional valve is used to open or block the branching pipeline when the temperature of the refrigerant in the cooling pipeline does not meet a preset temperature range, so that the high-temperature refrigerant enters or does not pass through the heat exchanger. In this way, the heat exchange device of the present invention can not only achieve the purpose of heat exchange to lower the temperature, but also quickly adjust the cooling liquid to the required temperature through the high-temperature refrigerant, thereby improving the practicality.

Description

Temperature-controllable heat exchange device

The invention relates to a heat exchange device, in particular to a temperature-controllable heat exchange device capable of exchanging heat between a cooling liquid and a refrigerant.

Referring to FIG. 1, a conventional cooling liquid centralized supply circulation system 1 disclosed in the Chinese Patent Publication No. 202716114U is explained. The cooling liquid is mainly passed through a liquid inlet pipe 11 and a liquid return pipe 12 in a liquid return. The tank 13, a hot and cold exchanger 14, a liquid supply tank 15 and the number processing machine 2 flow in a cyclical manner. Thereby, one cooling liquid is supplied to the circulation system 1 to a plurality of processing machines 2 at the same time to achieve the purpose of reducing the temperature.

The cold and heat exchanger 14 or even the common heat exchangers on the surface are mainly for the purpose of cooling. Therefore, when design considerations are made, the higher the heat exchange efficiency, the better, and it is not possible to accurately control the refrigerant temperature, especially for The area that needs to be insulated or heated does not have the function of increasing temperature, but has the disadvantage of limited use.

Therefore, an object of the present invention is to provide a temperature-controllable heat exchange device capable of reducing temperature, increasing temperature, or holding heat, and improving practicality.

Therefore, the temperature-controllable heat exchange device of the present invention includes a container, a pipeline unit, and a heat exchange unit.

This container is suitable for containing coolant.

The pipeline unit includes at least one input pipeline suitable for inputting the cooling liquid, at least one output pipeline group suitable for outputting the cooling liquid from the container, and a main pipeline connected to the container.

The heat exchange unit includes a cooling line, a compression motor constituting a circulation circuit through the cooling line, a condensation group, an expansion valve, a heat exchanger and a shunt line, and a proportional valve, the cooling line Suitable for refrigerant flow, the compression motor is suitable for compressing low-temperature and low-pressure gaseous refrigerants into high-pressure and high-temperature gaseous refrigerants. The condensation group is suitable for heat exchange with high-pressure and high-temperature gaseous refrigerants, so that high-pressure and high-temperature gaseous refrigerants become normal temperature and high pressure gaseous The refrigerant, the expansion valve is suitable for pressure drop of normal temperature and high pressure gaseous refrigerant into low temperature and low pressure refrigerant. The heat exchanger is connected to the input pipeline group and the main pipeline, and is suitable for the coolant in the at least one input pipeline. Passing with the refrigerant in the cooling pipe is suitable for returning the coolant to the container after the heat exchange between the cooling liquid and the refrigerant. The branch pipe is connected to the cooling pipe and the proportional valve is connected to the branch pipe. The shunt pipeline can be blocked by opening and opening, and is used for opening or blocking when the temperature value of the coolant in the pipeline unit does not meet a preset temperature range value. The dividing line, or into the high-temperature refrigerant does not pass through the heat exchanger.

The effect of the present invention is that in addition to achieving the purpose of heat exchange and temperature reduction, the high-temperature refrigerant can also be used to quickly adjust the cooling liquid to the required temperature to achieve the purpose of increasing temperature or maintaining heat, thereby improving practicality.

Referring to FIG. 2, FIG. 3, FIG. 4 and FIG. 5, an embodiment of a temperature-controllable heat exchange device 400 according to the present invention is suitable for cooling a processing machine 3. The processing machine 3 includes two hot zones 31. In this embodiment, the temperature-controllable heat exchange device 400 includes a container 4, a pipeline unit 5, a heat exchange unit 6, and an electric control unit 7.

The container 4 is suitable for containing a cooling liquid. In this embodiment, the cooling liquid may be oil or water.

The piping unit 5 includes two input pipes 51, two on-off valves 52 suitable for inputting cooling liquid from the hot zone 31, two output pipe groups 53 suitable for outputting cooling liquid from the container 4, and communicates with the container. 3 of a main road 54. Each on-off valve 52 communicates with a respective input line 51 and is suitable for controlling the coolant flow rate. Each output line group 53 has an output line 531 connected to the container 4, a pump 532 adapted to guide the coolant in the container 4 into the output line 521, and connected to the output line 521 A primary line 533 from each of the input lines 51, and a bypass valve 534 which can block the secondary line 523 openly. The bypass valve 534 is used to open the secondary line 533 when the pressure of the coolant in the output line 531 is greater than a preset value of a pressure range, and is suitable for allowing a part of the coolant in the output line 531 to enter. Respective input lines 51.

It should be noted that the number of the output pipeline groups 53 is not limited to two groups, and may also be matched with the number of the hot zones 31 of the processing machine 3, which may be one group or more than three groups.

The heat exchange unit 6 includes a cooling pipe 61 suitable for the refrigerant flow, a compression motor 62, a condensation group 63, a dryer 64, an expansion valve 65, and a heat exchanger forming a circulation circuit through the cooling pipe 61. The exchanger 66 is connected to a branch line 67 connected to the cooling line 61 and a proportional valve 68 connected to the branch line 67 and blockably opening the branch line 67.

The compression motor 62 is suitable for compressing a low-temperature and low-pressure gaseous refrigerant into a high-pressure and high-temperature gaseous refrigerant.

The condensing group 63 is suitable for performing heat exchange with a high-temperature and high-temperature gaseous refrigerant, so that the high-pressure and high-temperature gaseous refrigerant becomes a normal-temperature and high-pressure gaseous refrigerant. The condensing group 63 has a condenser 631 through which the cooling pipe 61 passes, and a fan 632 installed on the condenser 631 and directing external air flow through the condenser 631.

The dryer 64 is suitable for filtering moisture and impurities in the cooling pipe 61.

The expansion valve 65 is suitable for a gaseous refrigerant having a pressure drop of normal temperature and high pressure to become a low temperature and low pressure refrigerant.

The heat exchanger 66 is connected to the input pipes 51 and the main pipe 54, and is suitable for passing the coolant in the input pipes 51 and the low-temperature and low-pressure refrigerant in the cooling pipe 61 to pass through, so that the coolant and After the refrigerant performs heat exchange, the main pipe 54 returns to the container 4.

The branch line 67 is connected to a cooling line 61 between the expansion valve 65, the first heat exchanger 66, and the compression motor 62 and the condenser 631.

The proportional valve 68 is used to control the flow of high-pressure high-temperature gaseous refrigerant into the heat exchanger 66, and can be opened or blocked when the temperature of the coolant in the output pipes 531 does not meet a preset temperature range. The shunt pipe 67 is closed to allow high-temperature refrigerant to enter or not pass through the heat exchanger 66 to achieve the purpose of controlling temperature.

The electric control unit 7 includes a driving board 71, a control machine board 72 which can be detachably electrically connected to the driving board 71 and is programmable, and four temperature sensors 73-76.

The driving board 71 is controlled by the control engine board 72 for supplying required electric power, and a fan 632 for driving the pump 43, the compression motor 62, and the condensation group 63.

The control board 72 is electrically connected to the expansion valve 65 and the proportional valve 68.

The temperature sensors 73 and 74 are used to detect the temperature of the coolant in the input pipe 51 and one of the output pipes 531.

The temperature sensor 75 is installed in a cooling pipe 61 between the compression motor 62 and the condensation group 63 to detect the temperature of the refrigerant before entering the condensation group 63.

The temperature sensor 76 is installed in the cooling pipe 61 between the expansion valve 65 and the heat exchanger 66 to detect the temperature of the refrigerant before entering the heat exchanger 66.

During the heat exchange, the pump 532 of each output line group 53 will absorb the cooling liquid in the container 4 into the output line 521 and output to the respective hot zone 31, so that the hot zone 31 reaches a temperature drop or It is the effect of temperature control.

Then, the cooling liquid for temperature control is guided from the hot zone 31 to the heat exchanger 66 through a separate input line 51 of each hot zone 31. At the same time, the heat exchange unit 6 compresses the low-temperature and low-pressure gaseous refrigerant into the high-pressure and high-temperature gaseous refrigerant through the compression motor 62, and then performs heat exchange with the high-pressure and high-temperature gaseous refrigerant through the condensation group 63, so that the high-pressure and high-temperature gaseous refrigerant becomes normal temperature The high-pressure gaseous refrigerant then passes through the expansion valve 65 to drop the normal-temperature high-pressure gaseous refrigerant into a low-temperature and low-pressure refrigerant. The low-temperature and low-pressure refrigerant enters and exits the heat exchanger 66 through the cooling pipe 61, and passes through the After the cooling liquid of the heat exchanger 66 is heat-exchanged, it is returned to the container 4 through the main pipe 54 to maintain the cooling liquid in the container 4 at a low temperature or a desired temperature. In this way, cycles are repeated, so that the cooling liquid can exchange heat with the refrigerant in the heat exchanger 66 before outputting the heat zones 31 while maintaining a low temperature or a desired temperature.

It is worth noting that the control machine board 72 can also control the heat exchange efficiency of the heat exchange unit 6 through the driving board 71 to further change the temperature of the cooling liquid. For example, when the temperature sensor 74 (or the temperature sensor 73) detects that the temperature of the coolant in the corresponding output pipe 531 (or the corresponding input pipe 51) is higher than a preset cooling temperature value When the temperature of the refrigerant passing through the condensing group 63 is higher than a preset value of a heat exchange temperature, and the temperature is returned to the control board 62, the control board 72 may pass the driving board. 71 controls the air volume of the fan 632 or the cooling effect of the expansion valve 65, thereby further improving the heat exchange efficiency of the heat exchanger 66, reducing the cooling liquid, or maintaining a constant temperature effect.

Importantly, the control board 72 can also control the flow of high-temperature refrigerant entering the heat exchanger 66 through the proportional valve 68, and further control the heat exchange efficiency of the heat exchanger 66. For example, when the temperature of the refrigerant in the cooling pipe 61 is lower than the preset value of the heat exchange temperature, the control board 72 may block the shunt pipe through the proportional valve 68. The circuit 67 may partially open the diverting pipe 67, so that the high-temperature refrigerant enters the heat exchanger 66 or does not pass through the heat exchanger 66, thereby cooling the cooling liquid or heating the cooling liquid through the refrigerant with different temperature changes. Or maintain a constant temperature effect to achieve the purpose of controlling the temperature of the cooling liquid.

Furthermore, when the temperature of the refrigerant in the cooling pipe 61 is detected by the temperature sensor 75 to be higher than a preset value of the refrigerant temperature and transmitted back to the control board 72, the control board 72 may pass the The driving plate 71 controls the compression motor 62 to reduce the rotation speed, to prevent the high-temperature refrigerant temperature from becoming too high, and to form a protection mechanism.

Through the above description, the advantages of the foregoing embodiments can be summarized as follows:

1. The present invention can use a modular design to enable a generally-sold drive board 71 to have the functions of monitoring and controlling heat exchange efficiency, refrigerant temperature, and coolant temperature after being electrically connected to the control board 72.

2. Through the monitoring of the refrigerant temperature by the frequency-variable compression motor 62, the frequency-variable fan 632, and the temperature sensors 75 and 76, the control board 72 can make the refrigerant of different temperatures cold and hot through the proportional valve 68 Quickly do temperature compensation, to achieve the purpose of precise temperature control, to achieve the purpose of heating or holding, and then improve the practicality.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, any simple equivalent changes and modifications made according to the scope of the patent application and the contents of the patent specification of the present invention are still Within the scope of the invention patent.

3‧‧‧Processing Machine

31‧‧‧hot zone

400‧‧‧heat exchange device

4‧‧‧ container

5‧‧‧Piping unit

51‧‧‧input pipeline

52‧‧‧On-off valve

53‧‧‧Output pipeline group

531‧‧‧output line

532‧‧‧pump

533‧‧‧times pipeline

534‧‧‧Bypass valve

6‧‧‧ heat exchange unit

61‧‧‧cooling pipeline

62‧‧‧Compression motor

63‧‧‧Condensing group

631‧‧‧ condenser

632‧‧‧fan

64‧‧‧ dryer

65‧‧‧Expansion valve

66‧‧‧Heat exchanger

67‧‧‧ split line

68‧‧‧ proportional valve

7‧‧‧ electric control unit

71‧‧‧Drive Board

72‧‧‧Control Board

73 ~ 76‧‧‧Temperature sensor

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein:
FIG. 1 is a schematic diagram of a pipeline, a conventional cooling fluid centralized circulation system disclosed in Chinese Patent Publication No. 202716114U;
2 is a schematic perspective view illustrating an embodiment in which a machine tool is installed in a temperature-controllable heat exchange device of the present invention;
FIG. 3 is a schematic view of a pipeline of the embodiment; FIG.
FIG. 4 is a schematic diagram illustrating the configuration of an electric control unit in the embodiment; and FIG. 5 is a schematic circuit diagram of the embodiment.

Claims (10)

A temperature-controllable heat exchange device includes: a container suitable for containing a cooling liquid; and a pipeline unit including at least one input pipeline suitable for inputting the cooling liquid and at least one container suitable for outputting cooling liquid from the container. An output pipeline group and a main pipeline connected to the container; and a heat exchange unit including a cooling pipeline, a compression motor constituting a circulation circuit through the cooling pipeline, a condensation group, an expansion valve, a A heat exchanger and a split line, and a proportional valve, the cooling line is suitable for the refrigerant flow, the compression motor is suitable for compressing low temperature and low pressure gaseous refrigerant into high pressure and high temperature gaseous refrigerant, and the condensation group is suitable for high pressure and high temperature The gaseous refrigerant is heat exchanged, so that the high-temperature and high-temperature gaseous refrigerant becomes the normal-temperature and high-pressure gaseous refrigerant. The expansion valve is suitable for the pressure-dropped normal-temperature high-pressure gaseous refrigerant to become the low-temperature and low-pressure refrigerant. The heat exchanger is connected to the at least one input pipeline. And the main pipe, and is suitable for passing the coolant in the at least one input pipe and the refrigerant in the cooling pipe, and is suitable for making the coolant and the cold After the heat exchange, the main pipe returns to the container, the branch pipe is connected to the cooling pipe, the proportional valve is connected to the branch pipe and is used to open or block the branch pipe. When the temperature value of the cooling liquid in the unit does not meet a preset temperature range value, the high-temperature refrigerant is allowed to enter or not pass through the heat exchanger. The temperature-controllable heat exchange device according to claim 1, wherein the pipeline unit includes two output pipeline groups, and each output pipeline group has an output pipeline connected to the container, and is suitable for guiding the pipeline. The coolant in the container enters a pump of the output pipeline, a primary pipeline connected to the output pipeline and the at least one input pipeline, and a bypass valve for opening or blocking the secondary pipeline. When the pressure value of the coolant in the bypass valve in the output pipeline is greater than a preset value of a pressure range, opening the secondary pipeline is suitable for allowing a part of the coolant in the output pipeline to enter the at least one input pipeline. The temperature-controllable heat exchange device according to claim 2, wherein the pipeline unit includes two input pipelines. The temperature-controllable heat exchange device according to claim 3, wherein the pipeline unit further includes two on-off valves, and each on-off valve communicates with a respective input pipeline and is suitable for controlling a coolant flow rate. The temperature-controllable heat exchange device according to claim 1, wherein the heat exchange unit further comprises a condenser and the expansion valve, and the cooling motor and the compression motor, the condenser, and the expansion are disposed through the cooling pipe. The valve and the heat exchanger constitute a dryer of the circulation circuit, and the dryer is suitable for filtering moisture and impurities in the cooling pipeline. The temperature-controllable heat exchange device according to claim 1, wherein the condensation group of the heat exchange unit has a condenser for the cooling pipe to pass through, and the condenser is installed on the condenser and guides external airflow through the condenser. At least one fan of the condenser. The temperature-controllable heat exchange device according to claim 6, further comprising an electric control unit, the electric control unit includes a driving board, and a control machine that is electrically connected to the driving board and can be detachably connected to the driving board. The driving board is controlled by the control engine board for supplying the required electric power, and drives the pump and the compression motor. The temperature-controllable heat exchange device according to claim 7, wherein the electric control unit further includes at least one temperature sensor electrically connected to the control board, and the at least one temperature sensor is used to detect the cooling pipe The temperature of the refrigerant. The temperature-controllable heat exchange device according to claim 8, wherein the electric control unit further includes two temperature sensors electrically connected to the control board, and one of the temperature sensors is installed on the compression motor and the condenser. The cooling pipe between the groups is used to detect the temperature of the refrigerant before entering the condensing group. The other temperature sensor is installed in the cooling pipe between the expansion valve and the heat exchanger to detect entering the heat. The temperature of the refrigerant in front of the exchanger. The temperature-controllable heat exchange device according to claim 7, wherein the electric control unit further includes two temperature sensors electrically connected to the control board, and the temperature sensors are respectively used for detecting the output pipeline. The temperature of the coolant in the input line.