KR100516077B1 - apparatus for hot-water supply - Google Patents

Abstract

The present invention relates to a hot water supply device, a heat pump (10) comprising a condenser (1) for condensing a refrigerant, a heat exchanger (2) for heating water, and a heat collector (3) for collecting the heat from the outside to expand the refrigerant. In the hot water supply device for supplying hot water, the hot water supply device is installed in a pipe of a refrigerant circulating between the condenser (1), the heat exchanger (2) and the heat collecting unit (3) to sense the pressure of the refrigerant to signal A sensor unit 20 to be generated; The pressure value of the refrigerant is received from the sensor unit 20 and accordingly, the rotation speed of the fan 11 provided in the heat collecting unit 3 and the rotation of the water supply pump 42 supplying water to the heat exchanger 2. The control unit 30 for generating a control signal for controlling the number; relates to a hot water supply device characterized in that it comprises a. Here, the sensor unit 20 includes: a first sensor 21 for sensing a pressure of a condensed and high-pressure refrigerant passing between the condenser 1 and the heat exchanger 2; And a second sensor 22 that detects the pressure of the refrigerant having a low pressure due to expansion between the heat collection unit 3 and the condenser 1.

And the heat collecting unit 3 is provided with a fan 11, the first evaporation unit 12 for sucking the outside atmosphere and passing the atmosphere between the pipeline through which the refrigerant flows to collect the heat of the atmosphere and deliver it to the refrigerant Wow; And a second evaporation unit 13 for collecting heat from the water and transferring the refrigerant to a refrigerant passage through which the refrigerant flows and the water flowing from the outside.

Accordingly, more precise and rapid control is made so that hot water can be effectively supplied, and the hot water is heated by collecting heat from the outside air and wastewater, thereby having an economic effect.

Description

Hot water supply {apparatus for hot-water supply}

The present invention relates to a hot water supply device to detect the pressure of the refrigerant to collect the external heat to control the amount of air sucked from the outside and the amount of water supplied to the heat pump to supply a hot water of a constant temperature It is about.

Baths, saunas, etc. need a large amount of hot water. Conventionally, in order to make such hot water, water is heated by heat generated by burning fuel in a boiler. However, the method using the fuel as described above is not economical because a large amount of fuel is required because the efficiency is low, there is a problem that air pollution occurs due to pollutants generated during the combustion of the fuel.

Recently, in order to solve this problem, a compressor and a condenser 1 are provided, and a heat pump 10 for collecting heat from an external heat source has been developed and installed. When the heat pump 10 supplies only the energy for driving the compressor, the heat pump 10 collects heat from an external atmosphere lamp so that it can be used more economically than a boiler. However, the heat pump 10 has a problem in that it does not operate normally if the variation in the temperature of the introduced water temperature is large.

In addition, the conventional heat pump 10 is configured to simply suck the outside air by using the fan 11 and collect the heat by passing the sucked air between the pipelines through which the refrigerant flows, so especially when the outside temperature is low, If you go down there is a problem that does not work properly.

Korean Patent Application No. filed by the present applicant in order to solve the above problems is provided with a fan 11 in the heat pump 10 to suck the outside air to collect heat and at the same time plate heat exchanger (2) It is provided with a hot water supply device is provided so that the heat is collected from the external water to operate even when the external temperature is low. The hot water supply device also includes an auxiliary tank between the hot water tank 4 and the heat pump 10 and senses the temperature of the hot water discharged from the heat pump 10 to provide a fan 11 of the heat pump 10. By controlling the speed of the air to adjust the amount of air to be sucked accordingly to control the amount of heat collected accordingly and to adjust the amount of water supplied to the heat pump 10 to maintain a constant temperature of the hot water discharged. .

However, the hot water supply device is operated by sensing the temperature of the hot water discharged, so that the hot water after passing through the heat pump 10 for the change in the temperature of the external atmosphere and the temperature change of the water supplied to the heat pump 10. Since the control is performed by the heat pump 10, the heat pump 10 may malfunction because it does not respond to the change of state quickly.

The present invention has been made to solve the above problems and the speed of rotation of the feed pump 42 for supplying water to the heat exchanger (2) and the fan 11 of the evaporator to collect heat by sucking the outside air and It is an object of the present invention to provide a hot water supply device in which the heat pump 10 is smoothly operated by precise control.

And it is another object to provide a hot water supply device that collects heat from the waste water, the heat efficiency is high, and prevents the pipeline from being blocked by foreign substances contained in the waste water.

The present invention is a sensor which is installed in the piping of the refrigerant circulating between the condenser 1, the heat exchanger (2) and the heat collecting unit (3) to achieve the above object to sense the pressure of the refrigerant to generate a signal Section 20; The pressure value of the refrigerant is received from the sensor unit 20 and accordingly, the rotation speed of the fan 11 provided in the heat collecting unit 3 and the rotation of the water supply pump 42 supplying water to the heat exchanger 2. The control unit 30 for generating a control signal for controlling the number; hot water supply apparatus characterized in that it comprises a technical gist.

Here, the sensor unit 20 includes: a first sensor 21 for sensing a pressure of a condensed and high-pressure refrigerant passing between the condenser 1 and the heat exchanger 2; It is preferably configured to include; a second sensor 22 for sensing the pressure of the low-pressure refrigerant is expanded between the heat collector 3 and the condenser (1).

Preferably, the heat collecting part 3 is provided with a fan 11 so as to suck the outside atmosphere and pass the atmosphere between the pipelines through which the refrigerant flows to collect the heat of the atmosphere and transmit the refrigerant to the refrigerant ( 12); And a second evaporation unit 13 configured to form a refrigerant passage through which the refrigerant flows and a passage through which water flowing from the outside flows, collecting heat from the water and transferring the heat to the refrigerant.

The second evaporation unit 13 is preferably provided with a steam supply unit 14 for supplying a high pressure steam in the wastewater passage.

The hot water supply device is connected to a hot water pipe 43 heated by the heat pump 10 and directed to the hot water tank 4 and a cold water pipe 44 for supplying water to the water supply pump 42. It is characterized in that the tube 41 is provided and the motor-type valve 44 is installed in the auxiliary pipe 41 to maintain a constant temperature of the water supplied to the feed water pump 42.

It can be seen that the present invention is to provide a hot water supply device for controlling the feed pump 42 and the fan 11 quickly and precisely so that the heat pump 10 can be operated smoothly. To this end, in the present invention, a sensor for detecting the pressure of the refrigerant is installed in the piping of the refrigerant connecting the condenser 1, the heat exchanger 2, and the heat collecting part 3 of the heat pump 10. Since the pressure of the refrigerant condensed in the condenser 1 of the heat pump 10 and the pressure of the refrigerant expanded in the heat collector change according to the amount of heat collected by the evaporator, it is detected and transmitted to the controller 30. Compared to the conventional technology of controlling the temperature of the hot water heated in the heat pump 10 by adjusting the rotation speed of the water supply pump 42 and the fan 11 in accordance with the change in the pressure at 30. This is because the heat pump 10 can be operated smoothly without malfunction because it can be precisely controlled.

Hereinafter, with reference to the accompanying drawings will be described in detail for the hot water supply apparatus according to an embodiment of the present invention.

The condenser 1 of the heat pump 10 condenses the refrigerant, and the condensed refrigerant is heated by transferring heat to water supplied from the outside in the heat exchanger 2. Thereafter, the refrigerant is temporarily stored in the receiver and then transferred to the heat collector 3. The heat collector 3 expands the refrigerant to collect external heat. The expanded refrigerant is sent back to the condenser 1 to continue to circulate. At this time, the refrigerant is maintained at a high pressure between the heat collecting unit 3 in the condenser 1 and maintains a low pressure in the pipe flowing from the heat collecting unit 3 to the condenser 1.

Hot water supply apparatus according to an embodiment of the present invention is provided with a sensor unit 20 in the piping through which the refrigerant flows to detect the pressure of the refrigerant. This is because the pressure of the refrigerant is changed according to the amount of heat collected by the heat collecting unit 3 so as to allow the hot water supply device to operate normally by controlling the amount of heat collected and the amount of water to be heated.

In one embodiment of the present invention, the sensor unit 20 is provided with two sensors.

The first sensor 21 is installed in the pipe between the condenser 1 and the heat exchanger 2 in which the refrigerant maintains a high pressure state. The first sensor 21 detects the refrigerant pressure of the high pressure condensed in the condenser 1 in the pipe, and the detected pressure is converted into an electrical signal and transferred to the controller 30 to be described later.

In addition, a second sensor 22 is provided between the heat collecting part 3 and the condenser 1. The second sensor 22 detects the refrigerant pressure of the low pressure expanded in the heat collecting unit 3 and transmits it to the control unit 30.

The control unit 30 receives the pressure value detected by the sensor to determine the amount of heat collected by the heat collecting unit 3. This is because the pressure of the refrigerant is increased when a large amount of heat is collected in the heat collecting unit 3, and if the amount of heat is insufficient, the pressure is reduced, so that the amount of heat can be determined by detecting the pressure as described above.

In this case, when the pressure of the refrigerant sensed by the first sensor 21 is high, a large amount of heat is collected in the condensed refrigerant, so that the water supply pump supplying water to be heated into the heat exchanger 2 ( 42) to adjust the rotation speed. The controller 30 adjusts the amount of water supplied by transmitting a control signal to an inverter type motor installed in the feed water pump 42 according to the PID control method according to the pressure value input from the first sensor 21. . That is, when the pressure of the first sensor 21 is high, the amount of water supplied is increased, and when the pressure is low, a small amount of water is supplied to maintain a constant temperature of the water discharged by heating.

At this time, the water supplied through the water supply pump 42 is a part of the water stored in the auxiliary tank connected to the rooftop tank and the hot water tank (4) and the hot water heated in the heat pump (10) and discharged to the hot water tank (4) Will be mixed. To this end, an auxiliary pipe 41 is provided between the cold water pipe 44 connecting the auxiliary tank and the water supply pump 42 and the hot water pipe 43 connecting the heat pump 10 and the hot water tank 4. . The auxiliary pipe 41 is provided with a motor valve 44. The motor-type valve 44 is configured to sense the temperature of the water supplied to the heat pump 10 through the feed water pump 42 to open and close the valve by a motor attached to the valve. This is because the opening and closing of the valve is made faster than the electronic valve that is to open and close the motor by the existing thermal expansion valve or the electric signal, it is possible to accurately control the amount of water passing through the auxiliary pipe (41).

In addition, the control unit 30 adjusts the rotation speed of the fan 11 installed in the heat collecting unit 3 according to the pressure value input from the second sensor 22 in a proportional control method. The second sensor 22 is provided to control the rotation speed of the fan 11 by detecting the low pressure refrigerant pressure that is expanded, so that the condenser 1 may malfunction when the pressure of the refrigerant is high. This is to grasp the state of the refrigerant before being introduced into (1) and to adjust the pressure of the refrigerant supplied to the condenser 1. When the pressure value input through the second sensor 22 is low, the rotation speed of the fan 11 is increased to collect more heat, and when the pressure value is high, the rotation speed of the fan 11 is increased. By reducing the amount of heat collected so that the pressure of the refrigerant introduced into the condenser 1 as possible to maintain a constant.

In addition, the heat collecting unit 3 of the hot water supply device of the present invention uses the first evaporation unit 12 to collect heat by using a fan 11 to collect heat and absorbs the heat of wastewater generated by using hot water. It is composed of a second evaporation unit 13 to be recycled. The first evaporator 12 rotates the fan 11 to suck the outside air and passes the air between the pipelines through which the refrigerant flows. The refrigerant expands while passing through the pipe to absorb external heat.

The second evaporation part 13 is configured to position the conduit through which the waste water flows adjacent to the conduit flowing while the refrigerant expands so that heat of the waste water is transferred to the refrigerant. At this time, the waste water pipe is connected to the steam supply pipe for supplying high pressure steam from the outside. This is because the waste water is mixed with foreign matters, so that the foreign matters may settle or aggregate in the pipeline and close the pipeline, so that the foreign matter is removed with high pressure steam so that the wastewater can easily flow.

Hereinafter will be described the operation of the hot water supply device according to an embodiment of the present invention.

When power is supplied to the control unit 30 of the hot water supply device of the present invention, the control unit 30 first collects heat by sucking the outside air by rotating the fan 11 of the first evaporator 12. In this case, the second sensor 22 transmits the pressure of the refrigerant expanded through the first evaporator 12 to the controller 30. In the initial operation, since the waste water is not supplied, the water is heated only by the heat collected by the first evaporator 12. The refrigerant of the first evaporator 12 is introduced into the condenser 1 to condense, and the first sensor 21 detects the pressure of the condensed refrigerant and transmits it to the controller 30. The controller 30 continues to rotate the fan 11 until the pressure sensed by the second sensor 22 rises to a predetermined pressure value. In addition, when the pressure sensed by the first sensor 21 is greater than or equal to a predetermined pressure, the controller 30 operates the feed water pump 42 to supply water into the heat pump 10 to heat it.

Then, when the wastewater is generated using the heated hot water, heat is collected in the second evaporation unit 13. Thereafter, the rotation speed of the fan 11 and the rotation speed of the feed water pump 42 are controlled according to values input through the first sensor 21 and the second sensor 22 so that the pressure of the refrigerant is kept constant. To supply hot water at a constant temperature.

As described above, according to the hot water supply device of the present invention, since the pressure of the refrigerant is sensed and controlled, the amount of water supplied and the amount of air to be sucked can be controlled quickly and precisely, thereby preventing malfunction of the heat pump. have.

And because it collects the heat of the outside air and the waste water at the same time, there is an effect that it operates normally even in the winter when the outside temperature is extremely low. In addition, since the pipe is prevented from being clogged by foreign matter contained in the waste water, there is an advantage that the management cost is reduced.

1 is a schematic configuration diagram of a hot water supply device according to an embodiment of the present invention

2 is a schematic configuration diagram of a heat pump used in the present invention.

Claims (6)

Hot water for supplying hot water with a heat pump 10 including a condenser 1 for condensing a refrigerant, a heat exchanger 2 for heating water, and a heat collector 3 for collecting the external heat to expand the refrigerant. In the feeder, A sensor unit 20 installed in a pipe of a refrigerant circulating between the condenser 1, the heat exchanger 2, and the heat collecting unit 3 to detect a pressure of the refrigerant and generate a signal; The pressure value of the refrigerant is received from the sensor unit 20 and accordingly, the rotation speed of the fan 11 provided in the heat collecting unit 3 and the rotation of the water supply pump 42 supplying water to the heat exchanger 2. Hot water supply device characterized in that it comprises a; control unit for generating a control signal for controlling the number. The method of claim 1, wherein the sensor unit 20, A first sensor 21 which detects the pressure of the condensed and high-pressure refrigerant passing between the condenser 1 and the heat exchanger 2, and transmits the detected pressure to the control unit 30; And a second sensor (22) which detects the pressure of the low-pressure refrigerant that is expanded between the heat collecting unit (3) and the condenser (1) and transmits the pressure to the control unit (30). The method of claim 2, wherein the control unit 30, The rotation speed of the water supply pump 42 is adjusted according to the input value from the first sensor 21, and the rotation speed of the fan 11 is adjusted according to the input value of the second sensor 22. Hot water supply system. According to claim 1, wherein the heat collecting portion (3) A first evaporation unit (12) provided with a fan (11) to suck the outside atmosphere and to pass the atmosphere between the pipelines through which the refrigerant flows to collect and transfer heat of the atmosphere to the refrigerant; And a second evaporation unit (13) for collecting heat from the water and transferring the refrigerant to the refrigerant passage through which the refrigerant flows and the water flowing from the outside is formed. . The method of claim 4, wherein the second evaporation unit 13, Hot water supply device characterized in that the steam supply unit 14 for supplying a high pressure steam in the waste water passage is installed. The hot water supply device according to any one of claims 1 to 5, It is provided with an auxiliary pipe 41 for connecting between the hot water pipe 43 is heated in the heat pump 10 to the hot water tank 4 and the cold water pipe 44 for supplying water to the water feed pump 42, Hot water supply device characterized in that to maintain a constant temperature of the water supplied to the water supply pump 42 by installing a motor-type valve 44 in the auxiliary pipe (41).