KR100854602B1 - Air-conditioning of automatic control equipment and control method for the same - Google Patents

Abstract

An apparatus and a method for automatic control of cooling and heating are provided to efficiently use heat by forming a boundary layer in a heat storage tank so as to form medium oil having different temperatures in the upper and lower portions of the heat storage tank. An apparatus for automatic control of cooling and heating comprises a heat pump chiller(10), a heat storage tank(20), an electric heater(30) and a controller(50). The heat storage tank is connected with the heat pump chiller through a pipe(R1) to receive cooling water or heat source water generated from the heat pump chiller. The electric heater is installed at the upper portion of the outer peripheral surface of the heat storage tank, and heats the heat source water to form a boundary layer. The controller controls the heat pump chiller, the electric heater and the heat storage tank according to setting.

Description

Air-conditioning of Automatic Control Equipment and Control Method For The Same}

1 is a schematic view showing an automatic cooling, heating apparatus according to an embodiment of the present invention,

2 is a flowchart illustrating a control method in a cooling mode according to an embodiment of the present invention.

3 is a flowchart illustrating a control method in a general heating mode according to an embodiment of the present invention,

Figure 4 is a flow chart showing a control method in the rapid heating mode according to an embodiment of the present invention,

5 is a flowchart illustrating a control method when the heating mode goes out according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: heat pump cooling device 20: heat storage tank

30: electric heater 40: supply source

50: control unit

The present invention relates to a cooling and heating automatic control device and a control method according thereto, and more particularly, a boundary layer is formed in the heat storage tank by supplying the medium oil heat-exchanged in the heat pump cooling device to the middle portion of the heat storage tank. When the media oil is formed at the upper and lower part of the heat storage tank with a different temperature, the heat is efficiently used, and an electric heater is installed on the heat storage tank to supply the medium oil heated by the electric heater to a heat source supplying source. The present invention relates to a cooling and heating automatic control device and a control method according to the present invention, which can be used at a high speed to provide effective heating in a short time.

Generally, heat pumps use a fan to suck heat sources from the outside air, groundwater, and geothermal heat using a cycle, and collect heat by passing the sucked heat sources through a pipeline through which refrigerant flows. Efficiently provide a large amount of hot water, such as large or public buildings.

This heat pump cycle is based on a compressor, a heat exchanger (which is used as a condenser for cooling, an evaporator for heating), an expansion valve, and an indoor unit.

When the use of the heat pump is heating, the high-temperature, high-pressure refrigerant compressed in the compressor is condensed in the condenser (heating water, etc.), using the heat of condensation to generate hot water, while condensing in the condenser The low-temperature, low-pressure refrigerant is introduced into the evaporator through the expansion valve, and then absorbs the outside air and enters the compressor again, so that the cycle of the heat pump is repeated.

As described above, a cooling and heating system generally includes a compressor, a heat exchanger, an expansion valve, and an indoor unit connected to a refrigerant circulation conduit, while forming a four-way valve on one side of the conduit to selectively flow the refrigerant supplied from the compressor. By switching.

In other words, the cooling and heating described above are achieved by circulating the cycle toward the evaporator during cooling and the condenser during heating.

Here, in order to drive the heating system, a heating water tank (heating pipe) circulated in connection with an indoor heating circuit, a hot water auxiliary tank storing water supplied from the heating water tank, and water supplied from the hot water auxiliary tank are heated. And a plurality of conduits formed so that the water heated through the heat pump is circulated back to the heating bath.

In more detail, the refrigerant compressed to high temperature and high pressure in the compressor heats the hot water in the condenser, and the condensed refrigerant expands through the expansion valve and absorbs heat from the evaporator to repeat the cycle circulating to the compressor.

However, if the temperature of the water supplied to the heat pump is too cold, the durability of the start-up is weakened, such as an overload occurs in the initial operation of the heat pump for heating it, which causes troubles, which leads to problems of operation error, which lowers thermal efficiency. There is a problem.

In addition, since the conventional cooling and heating device operates by detecting only the temperature of hot water, the heat pump malfunctions because the mutual change of the temperature of the outside air and the refrigerant pressure and temperature of the heat pump are not performed quickly. do.

Accordingly, the present invention has been made to solve the above conventional problems,

By supplying the medium oil heat-exchanged in the heat pump cooling device to the middle portion of the heat storage tank, a boundary layer is formed in the heat storage tank, and a medium oil having a different temperature difference is formed at the top and the bottom of the heat storage tank around the boundary layer to efficiently use heat. It is to provide an automatic heating control device and a control method accordingly.

In addition, the present invention by installing an electric heater on the top of the heat storage tank to supply the medium oil heated by the electric heater to the heat source supply destination can be used at high speed when the user needs it can be effective heating in a fast time is another object. .

The present invention has the following features to achieve the above object.

The present invention is an apparatus for automatically controlling the cooling / heating,

Cooling water is generated by a chiller during cooling, and heat source water is generated by a heat pump during heating, and a heat pump chiller is delivered to a supply (indoor) by a circulation pump P1. )Wow;

The pipe (R3) is connected to the heat pump cooling device and the pipe (R1) and the cooling water or heat source water is transferred through the pipe (R1) and spaced apart from the pipe (R1) and connected to the heat pump cooling device. And a circulation pump P1 is formed in the pipe R3 so that the cooling water or heat source heat exchanged by the circulation pump P1 is transferred to the heat pump cooling device again, and the cooling water or heat source water stored therein is delivered to the supply source. A pipe R2 is formed at one side and connected to the supply source, and a circulation pump P2 is formed at the pipe R2 to transfer the coolant or the heat source water, and the pipe to return the coolant or the heat source heat exchanged from the supply source back. A heat storage tank in which R4) is connected to a supply source;
An electric heater installed at an upper side of an outer circumferential surface of the heat storage tank and connected to the inside of the heat storage tank to heat an upper portion of the heat source water to generate a temperature difference between the top and bottom portions of the heat source water to naturally form a boundary layer;

The heat pump cooling device, each circulation pump (P1, P2) and the electric heater and the heat storage tank is characterized in that it is configured to include an external control unit formed to operate / control according to the setting.

In addition, the present invention is a control method of an automatic control device for heating and cooling,

In the cooling mode,

Calculating a temperature ΔTw of the supply source (S100);

Comparing the temperature ΔTw of the supply destination calculated in the calculating step S100 with the set temperature ΔT input to the controller (S110);

Operating the circulation pump (P1) when the temperature (ΔTw) of the supply source is high in the comparing step (S110) (S120);

Operating the circulation pump (P1) to supply cooling water generated in a chiller to a supply destination (S130);

After the cooling water supply step (S130), the step (S140) of stopping the circulation pump (P1) when the temperature (ΔTw) of the supply destination in the comparison step (S110) is low;

If the temperature (ΔTw) of the supply source is high through the calculation step (S100) and the comparison step (S110), it is repeated again in the step (S120) of operating the circulating pump (P1),

In normal heating mode,

Calculating a temperature ΔTw of the supply source (S200);

Comparing the temperature ΔTw of the supply destination calculated in the calculating step S200 with the set temperature ΔT input to the controller (S210);

Operating the circulation pump (P2) when the temperature (ΔTw) of the supply source is low in the comparing step (S210) (S220);

Operating the circulation pump (P2) to supply heat source water to a supply source in a heat storage tank storing heat source water generated by a heat pump (S230);

Operating the electric heater when the outlet temperature tw of the heat storage tank is 40 degrees or less in the heat source water supply step (S230);

After the electric heater operation step (S240), stopping the electric heater when the outlet temperature (tw) of the heat storage tank becomes 45 degrees or more (S250);

After the heat source water supply step (S230), the step (S260) of stopping the circulation pump (P2) if the temperature (ΔTw) of the supply destination is high in the comparison step (S210);

When the temperature (ΔTw) of the supply source is low through the calculating step (S200) and the comparing step (S210), it is repeated again in the step (S220) of operating the circulation pump (P2),

In rapid heating mode,

Switching to the rapid heating mode from the normal heating mode by the user's setting (S300);

After the rapid heating mode switching step (S300), the step of operating the electric heater when the outlet temperature (tw) of the heat storage tank is 80 degrees or less (S310);

Stopping the electric heater when the outlet temperature (tw) of the heat storage tank becomes 81 degrees or more after the electric heater operation step (S310);

The rapid heating mode is characterized in that it comprises a step (S330) to switch to the normal heating mode after 90 minutes.

The present invention having such a feature will be more clearly described through the preferred embodiment accordingly.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Figure 1 is a schematic diagram showing an automatic cooling, heating apparatus according to an embodiment of the present invention.

As shown in FIG. 1, the automatic control apparatus for cooling and heating according to the present invention includes a heat pump cooling apparatus 10, a heat storage tank 20, and a controller 50.

The heat pump chiller (heat pump chiller) is generated by the cooling water (chiller) formed inside of the cooling (chiller), the heat source water is generated by the heat pump (heat pump) during heating. In this case, the cooling device and the heat pump may be formed inside the heat pump cooling device 10 to make the coolant and the heat source water in the heat pump cooling device 10 itself.

Here, the heat pump cooling device 10 is a heat pump device and a cooling device, which are generally available on the market, and a detailed description thereof will not be described.

In addition, a pipe R1 connected to the heat storage tank 20 is formed on an outer circumferential surface of the heat pump cooling device 10, and the coolant and the heat source water are transferred to the heat storage tank 20 through the pipe R1, and the pipe R1. A pipe R3 is formed between the heat pump cooling device 10 and the heat storage tank 20 so that the cooling water and the heat source water transferred into the heat storage tank 20 are transferred to the heat pump cooling device 10 again. At this time, the circulation (P3) is formed in the pipe (R3) is the cooling water or heat source water heat exchanged by the circulation pump (P1) is transferred to the heat pump cooling device 10 again.

The heat storage tank 20 stores the cooling water or the heat source water transferred from the heat pump cooling device 10, and a heat insulating material is formed on itself so that the cold and high temperatures of the cooling water or the heat source water do not change even for a long time.

Here, the heat storage tank 20 is a heat storage tank 20 which is generally used and does not have a detailed description.

At this time, one end surface of the heat storage tank 20 is connected to the pipe (R1) connected from the heat pump cooling device 10, the other side surface of the heat storage tank 20 to the cooling water and the heat source water supply to the supply (indoor) pipe (R2) is connected.

Here, the circulation pump (P2) is formed in the pipe (R2) so that the cooling water and the heat source water is supplied through the pipe (R2).

In addition, an electric heater 30 is installed at the upper side of the heat storage tank 20 to supply the heat source water supplied from the heat pump cooling device 10 to the middle portion of the heat storage tank 20, and the inside of the heat storage tank 20 is filled. When the filled heat source water is heated by the electric heater 30 installed on the upper side, a boundary layer is formed inside the heat storage tank 20 starting from the middle, and the boundary layer has a temperature difference from the center of the heat storage tank 20 to the upper and lower parts. It can generate and use the heat of heat source water efficiently.

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The controller 50 performs the control step by comparing the temperature ΔTw of the supply source 40, which is frequently measured according to the input set temperature ΔT, so as to achieve the optimum efficiency of the supply source (indoor).

The controller 50 is formed externally to operate / control the heat pump cooling apparatus 10, the respective circulation pumps P1 and P2, the electric heater 30, and the heat storage tank 20 according to a setting.

Hereinafter, with reference to the accompanying drawings for the control method of the automatic cooling, heating control device according to the present invention will be described.

2 is a flowchart illustrating a control method in a cooling mode according to an embodiment of the present invention.

As shown in Figure 2, in the cooling mode,

First, the temperature ΔTw of the supply destination is calculated (S100), and the temperature ΔTw of the supply destination calculated in the calculation step S100 is compared with the set temperature ΔT input to the controller 50. (S110 )

Here, when the temperature (ΔTw) of the supply source is high through the comparison step (S110) to operate the circulation pump (P1) (S120), by operating the circulation pump (P1) to supply the cooling water generated in the chiller (chiller) Supply to 40. (S130)

Then, after the cooling water supply step (S130), if the temperature (ΔTw) of the supply destination is low through the comparison step (S110) again, the circulation pump (P1) is stopped and ends.

At this time, if the temperature (ΔTw) of the supply destination is high through the calculation step (S100) and the comparison step (S110), the circulation pump (P1) is operated again and repeated.

3 is a flowchart illustrating a control method in a general heating mode according to an embodiment of the present invention.

As shown in Figure 3, in the normal heating mode,

First, the temperature ΔTw of the supply destination is calculated (S200), and the temperature ΔTw of the supply destination calculated in the calculation step S200 is compared with the set temperature ΔT input to the controller 50. (S210 )

Here, when the temperature (ΔTw) of the supply source is low through the comparison step (S210) to operate the circulation pump (P2) (S220), by operating the circulation pump (P2) to store the heat source water stored in the heat storage tank (20). At this time, the heat source water of the heat storage tank 20 is a heat source water generated by a heat pump.

Then, when the outlet temperature (tw) of the heat storage tank 20 is 40 degrees or less in the heat source water supply step (S230), the electric heater 30 is operated (S240), after the electric heater operation step (S240), the heat storage tank When the outlet temperature tw of 20 is 45 degrees or more, the electric heater 30 is stopped. (S250)

Finally, after the heat source water supply step (S230), when the temperature (ΔTw) of the supply destination is high in the comparison step (S210), the circulation pump (P2) is stopped and ends (S260).

At this time, if the supply temperature (ΔTw) is low through the calculation step (S200) and the comparison step (S210), the circulation pump (P2) is repeatedly operated.

4 is a flowchart illustrating a control method in the rapid heating mode according to an embodiment of the present invention.

As shown in Fig. 4, in the rapid heating mode,

The user switches to the rapid heating mode from the normal heating mode by the user's setting. (S300)

Then, after the rapid heating mode switching step (S300), when the outlet temperature (tw) of the heat storage tank 20 is 80 degrees or less, the electric heater 30 is operated in the controller 50 (S310), and the electric heater is operated. After the step S310, when the outlet temperature tw of the heat storage tank 20 becomes 81 degrees or more, the control unit 50 stops the electric heater 30. (S320)

At this time, when the rapid heating mode has elapsed 90 minutes, it switches to the normal heating mode.

5 is a flowchart illustrating a control method when the heating mode goes out according to an embodiment of the present invention.

As shown in FIG. 5, in the out heating mode,

By the user's setting, the heating mode (the normal heating mode of FIG. 3 and the rapid heating mode of FIG. 4) is called out of the heating mode.

In addition, the controller 50 operates the automatic control device (refer to FIG. 1) for 10 to 30 minutes in order to prevent the environment and freezing of the supply source 40. (S410)

At this time, after the operation step (S410), when the outlet temperature (tw) of the heat storage tank 20 is 5 degrees or less, the electric heater 30 is operated in the controller 50 (S420), the electric heater operation step (S420) After that, when the outlet temperature tw of the heat storage tank 20 becomes 10 degrees or more, the electric heater 30 is stopped.

Finally, when the operation step (S410) has elapsed, the control unit 50 stops the automatic control device for 2 hours.

Here, by repeatedly executing the automatic control device operation step (S410) and automatic control device stop step (S440) can create a comfortable environment when the user enters the supply destination 40 after going out.

As described above, the automatic control of the cooling and heating apparatus and the control method according to the present invention supply the medium oil heat exchanged in the heat pump cooling apparatus to the middle portion of the heat storage tank to form a boundary layer in the heat storage tank, A medium oil having a different temperature difference is formed at the top and bottom of the heat storage tank, thereby effectively using heat.

In addition, the present invention by installing an electric heater on the top of the heat storage tank to supply the medium oil heated by the electric heater to the heat source supply destination can be used at high speed when the user needs it can be efficiently heated in a short time.

Claims (5)

In the device for automatically controlling the cooling / heating, Cooling water is generated by a chiller during cooling, and heat source water is generated by a heat pump during heating, and a heat pump chiller is transferred to a supply source 40 by a circulation pump P1. 10); Is connected to the heat pump cooling device 10 and the pipe (R1), the coolant or heat source water is transferred through the pipe (R1) inside, spaced apart from the pipe (R1) and connected to the heat pump cooling device (10). A pipe R3 is formed, and a circulation pump P1 is formed in the pipe R3, and the cooling water or heat source heat exchanged by the circulation pump P1 is transferred to the heat pump cooling device 10 again. A pipe (R2) is connected to the supply source 40 on one side so that the stored coolant or heat source water is delivered to the supply source 40, and a circulation pump (P2) is formed in the pipe (R2) to transfer the coolant or heat source water. A heat storage tank 20 in which a pipe R4 is connected to the supply source 40 so that the cooling water or the heat source water exchanged at the supply source 40 is returned; An electric heater installed at an upper side of the outer circumferential surface of the heat storage tank 20 and connected to the inside of the heat storage tank 20 to heat an upper portion of the heat source water to generate a temperature difference between the top and bottom portions of the heat source water to naturally form a boundary layer ( 30); A controller 50 formed externally to operate / control the heat pump cooling device 10, the circulation pumps P1 and P2, the electric heater 30, and the heat storage tank 20 according to a setting; Cooling and heating automatic control device, characterized in that configured to include. In the control method of the cooling and heating automatic control device according to claim 1, In the cooling mode, Calculating a temperature ΔTw of the supply source (S100); Comparing the temperature ΔTw of the supply destination calculated in the calculating step S100 with the set temperature ΔT input to the controller 50 (S110); Operating the circulation pump (P1) when the temperature (ΔTw) of the supply source is high in the comparing step (S110) (S120); Operating the circulation pump (P1) to supply cooling water generated in a chiller (chiller) to a supply destination (40); After the cooling water supply step (S130), the step (S140) of stopping the circulation pump (P1) when the temperature (ΔTw) of the supply destination in the comparison step (S110) is low; When the temperature (ΔTw) of the supply source is high through the calculation step (S100) and the comparison step (S110), the automatic cooling, heating control method characterized in that it is repeated again in the step (S120) of operating the circulating pump (P1). In the control method of the cooling and heating automatic control device according to claim 1, In normal heating mode, Calculating a temperature ΔTw of the supply source (S200); Comparing the temperature ΔTw of the supply destination calculated in the calculating step S200 with the set temperature ΔT input to the control unit 50 (S210); Operating the circulation pump (P2) when the temperature (ΔTw) of the supply source is low in the comparing step (S210) (S220); Supplying the heat source water to the supply source in the heat storage tank 20 storing the heat source water generated by the heat pump by operating the circulation pump (P2) (S230); Operating the electric heater 30 when the outlet temperature tw of the heat storage tank 20 is 40 degrees or less in the heat source water supply step (S230); After the electric heater operation step (S240), stopping the electric heater when the outlet temperature (tw) of the heat storage tank 20 becomes 45 degrees or more (S250); After the heat source water supply step (S230), the step (S260) of stopping the circulation pump (P2) if the temperature (ΔTw) of the supply destination is high in the comparison step (S210); When the temperature (ΔTw) of the supply source is low through the calculation step (S200) and the comparison step (S210), the automatic control method for heating and cooling, characterized in that it is repeated again in the step (S220) of operating the circulating pump (P2). . In the control method of the cooling and heating automatic control device according to claim 1, In rapid heating mode, Switching to the rapid heating mode from the normal heating mode by the user's setting (S300); After the rapid heating mode switching step (S300), when the outlet temperature (tw) of the heat storage tank 20 is 80 degrees or less, operating the electric heater (30) (S310); Stopping the electric heater 30 when the outlet temperature tw of the heat storage tank 20 becomes higher than 81 degrees after the electric heater operation step S310; Switching to the normal heating mode when the rapid heating mode has elapsed 90 minutes (S330); Cooling, heating automatic control method characterized in that it comprises a. The method according to claim 3 or 4, When the user goes out in the heating mode, Calling the outgoing heating mode from the heating mode (general heating, rapid heating) by the user's setting (S400); Operating the automatic control device for 10 to 30 minutes to prevent a pleasant environment and freezing of the supply source 40 (S410); After the operation step (S410), when the outlet temperature (tw) of the heat storage tank 20 is 5 degrees or less to operate the electric heater (30) (S420); After the electric heater operation step (S420), when the outlet temperature (tw) of the heat storage tank 20 is more than 10 degrees (S430) to stop the electric heater (30); Stopping the automatic control device for 2 hours when the operation step (S410) elapses (S440); Automatic control of heating and heating, characterized in that for repeating the automatic control device operation step (S410) and automatic control device stop step (S440).

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