KR101818743B1 - Thermo-hygrostat with energy-saving hot water production system - Google Patents

Abstract

The present invention relates to a thermo-hygrostat including an energy-saving hot water production system. According to the present invention, the thermo-hygrostat including the energy-saving hot water production system comprises: a thermo-hygrostat indoor unit including a compressor, a condenser, an expansion valve, and an evaporator, which form a refrigeration cycle; a three way valve installed on a refrigerant line connecting the compressor and the condenser; the hot water heating refrigerant line connected again from the three way valve to an inlet of the condenser to enable a refrigerant to flow when the three way valve is shifted; and a hot water tank enabling heat exchange between the refrigerant and water as the hot water heating refrigerant line passes through the inside of the hot water tank. So, the thermo-hygrostat including the energy-saving hot water production system can produce and provide the hot water at all times and can reduce power consumption for operating the thermo-hygrostat by improving condensing efficiency of the refrigeration cycle by water cooling by operation of the hot water tank.

Description

{THERMO-HYGROSTAT WITH ENERGY-SAVING HOT WATER PRODUCTION SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant temperature and humidity control device for controlling the state of indoor air using a refrigeration cycle or the like.

Generally, the constant temperature and humidity control unit for maintaining the temperature and humidity inside the building is a multifunctional air conditioning unit that appropriately adjusts the air condition so that various equipment or devices affected by the indoor air can be operated in the best condition.

These thermostats and hygroscopes are mainly used to maintain proper temperature and humidity of computer room, laboratory, semiconductor, environmental test facility, etc., and if temperature and humidity are specified, they are kept to be maintained within the set time.

Cooling and dehumidifying in the cooling coil of the thermo-hygrostat, heating and reheating in the heating coil, and high-quality steam injection in the humidifier. Humidity control is performed.

The basic operation principle of the thermo-hygrostat is as follows. The refrigeration is performed by operating the refrigerator and using a heat medium called a refrigerant to compress, condense, expand, and evaporate. At this time, cold wind comes out from the indoor unit and warm wind comes out from the outdoor unit.

Electric heating is usually used for heating. When it is detected that the heating is necessary, the electric heater is supplied with electric power and the air is passed through to be heated.

Humidification is also configured to humidify water vapor generated by boiling water with an electric heater.

However, the conventional thermo-hygrostat has a problem in that it can not recover the heat generated through the condenser during the cooling operation but releases it as it is. Therefore, there is a problem in obtaining higher energy utilization efficiency.

Korean Patent Publication No. 10-2017-0016665 Korean Patent Publication No. 10-1545206

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems described above, and it is an object of the present invention to improve the cooling efficiency of a refrigeration cycle by constituting hot water by using waste heat generated when refrigerant gas of high temperature and high pressure is cooled and condensed, And to provide a thermo-hygrostat equipped with an energy-saving hot water production system that can be continuously supplied and improved in life convenience and energy efficiency.

In order to accomplish the above object, the present invention provides a thermostat and a humidity control system equipped with an energy saving hot water production system, including a compressor, a condenser, and an indoor temperature and humidity indoor unit provided with an expansion valve and an evaporator; A three-way valve provided on a refrigerant line connecting the compressor and the condenser; A hot water heating refrigerant line connected to the inlet end of the condenser to allow the refrigerant to flow during the three-way valve switching; And a hot water tank for allowing heat exchange between the refrigerant and the water while passing through the hot water heating and cooling line.

Preferably, the hot water tank is connected to a water supply line for supplying water (a constant water) from the water supply to the lower portion, and a hot water outflow line is connected to the upper portion.

Preferably, the hot water heating and cooling line is constituted by a hot water coil portion having a coil-like structure inside the hot water tank, and the hot water coil portion is disposed below the hot water tank.

And a hot water heat exchanger for passing the hot water heating and cooling line through the hot water tank and heating the hot water passing through the hot water tank, wherein the hot water passing through the hot water tank is bypassed to the hot water outlet line And a high-temperature line connected to the high-temperature heat exchanger.

 It is preferable that a check valve is provided on the hot water heating refrigerant line passing through the hot water tank to prevent the refrigerant from flowing backward during the three-way valve switching.

Meanwhile, the constant temperature and humidity indoor unit may be provided with a humidifier for humidifying the room by receiving hot water heated in the hot water tank.

Also, the above-mentioned constant temperature and humidity indoor unit is provided with a reheater that receives hot water heated in the hot water tank and heats the room, and the hot water passing through the reheater may be circulated to the hot water tank again.

The constant temperature and humidity indoor unit includes a lower air inlet; It is possible to have an air outlet on the upper side. The indoor unit may accommodate a blower for sucking indoor air through the air inlet and discharging the indoor air through the air outlet. Also, the evaporator and the expansion valve may be accommodated in the inside of the temperature and humidity / humidity indoor unit.

The compressor compresses the gaseous refrigerant from the evaporator that cools the air to a high temperature and a high pressure. The condenser condenses the refrigerant from the compressor into a liquid state. The expansion valve expands the refrigerant from the condenser, . ≪ / RTI >

The above and other objects and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which: In addition to the principal task solutions as described above, various task solutions according to the present invention will be further illustrated and described.

Since the thermostat and the hygrostat provided with the energy saving hot water production system according to the present invention are configured to recover hot water in the hot water production system in the process of condensing the gas heat compressed at high temperature and high pressure in the compressor, The refrigerant gas can be condensed to form an efficient refrigeration cycle, and the hot water can be produced without using a separate heat source facility, and can be conveniently and efficiently used.

That is, since the thermo-hygrostat usually operates 24/7, there is an effect that hot water can be produced and provided at all times when the hot water production system of the present invention is used. In the hot water tank, The efficiency can be increased and the power consumption for driving the thermo-hygrostat can be reduced.

FIG. 1 is a block diagram illustrating a thermo-hygrostat provided with an energy-saving hot water production system according to an embodiment of the present invention.
2 is a view for explaining a hot water production use cycle in an embodiment of the present invention.
FIG. 3 is a view for explaining a hot water production stop cycle in an embodiment of the present invention. FIG.
FIG. 4 is a block diagram illustrating a thermo-hygrostat provided with an energy-saving hot water production system according to another embodiment of the present invention.

Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

FIG. 1 is a block diagram illustrating a thermo-hygrostat provided with an energy-saving hot water production system according to an embodiment of the present invention.

Referring to FIG. 1, the thermo-hygrostat provided with the energy-saving hot water production system according to an embodiment of the present invention basically includes an expansion valve and an evaporator (not shown) in the thermo-hygrostat indoor unit 10 so as to constitute a refrigeration cycle cycle for constant- And a compressor (30), a condenser (40), and the like are configured on the outdoor unit (20) side.

In this configuration, the liquid separator 22, the pressure gauge 24, the oil separator 32, and the like may be additionally provided for smooth circulation and checking of the refrigerant on the outdoor unit 20 side. Here, the liquid separator 22 separates the liquid refrigerant mixed in the refrigerant gas so that only the gas flows into the compressor 30. The oil separator 32 separates the oil discharged from the compressor 30, (30).

Reference numeral 42 denotes a condenser fan for cooling the condenser 40 by air-cooling.

In particular, the present invention comprises a hot water production system (50) connected to a refrigerant flow line (33) between a compressor (30) and a condenser (40).

The hot water production system 50 is composed of a system capable of obtaining hot water by cooling the refrigerant compressed by the compressor 30 and rising to a high temperature and a high pressure by using water to perform heat exchange. The cooled refrigerant flows through the condenser 40 to the thermo-hygrostat indoor unit 10, and performs a constant temperature and humidity function.

The hot water production system 50 will be described in detail.

A three-way valve 34 is provided in the refrigerant flow line 33 connecting the oil separator 32 and the condenser 40. The three-way valve 34 is configured to select the refrigerant flow to the hot water heating refrigerant line 52 on the side of the hot water tank 60 and the refrigerant flow line 33 on the side of the condenser 40 through valve switching.

The hot water tank 60 has a size capable of storing a predetermined amount of water, and a water supply line 62 is connected to one side and a hot water outlet line 65 is connected to the other side.

A hot water heating and cooling line 52 connected from a three-way valve 34 is connected to the inside of the hot water tank 60 so as to perform heat exchange while being connected to the refrigerant flow line 33).

The hot water heating and cooling line 52 passing through the inside of the hot water tank 60 is connected from the upper side of the hot water tank 60 to the lower side and the water supply line 62 is connected to the lower side of the hot water tank 60 And the hot water outflow line 65 is connected to the hot water tank 60 on the upper side.

The hot water heating and cooling line 52 passing through the inside of the hot water tank 60 is preferably configured to have a hot water coil portion 56 which has a coil-like structure for promoting heat exchange. The hot water coil portion 56 is preferably configured to be positioned in the lower space of the hot water tank 60.

With this structure, the refrigerant discharged from the compressor 30 into the high-temperature and high-pressure state flows into the upper line of the hot water tank 60 through the three-way valve 34, flows through the hot water coil portion 56, And then flows to the condenser 40 through a line connected to the upper side of the hot water tank 60 to perform secondary cooling.

The hot water supply process is performed by flowing into the lower part of the hot water tank 60 through the water supply line 62 and then heated to the hot water coil part 56. The hot water is raised to the upper side of the tank, 65) to be supplied to hot water sources such as toilets.

Particularly, since the hot water coil part 56 is provided in the lower part of the hot water tank 60, the heat exchange between the hot water and the coolant can be smoothly performed, and hot water can be obtained more efficiently.

On the hot water heating and cooling line 52 connected to the inside of the hot water tank 60 from the three-way valve 34, hot water is quickly obtained or a high temperature heat exchanger 70 for obtaining hot water of a higher temperature is provided can do. That is, when the temperature of the hot water tank 60 does not reach a predetermined temperature, the hot water heat exchanger 70 can be used to obtain hot water quickly or to obtain a hot water having a relatively higher temperature than hot water .

It is preferable that the high temperature heat exchanger 70 is configured such that the hot water heating refrigerant line 52 passes through the hot water heat exchanger 70 and the high temperature line 74 bypassed by the hot water outflow line 65 described above is connected. Of course, it is preferable that a bypass valve 72 for interrupting the line is formed in the water supply line 62 so that the high-temperature line 74 can be bypassed.

The high-temperature heat exchanger 70 operates to shut off the water supply line 62 by operating the bypass valve 72 so that the water whose temperature has risen to some extent within the hot water tank 60 flows through the high- The refrigerant flows into the heat exchanger 70 and is heated to a higher temperature while being exchanged with the high temperature refrigerant in the high temperature heat exchanger 70 and then flows through the water supply line 62 at the rear of the bypass valve 72 High temperature water is supplied.

On the other hand, it is preferable that a temperature sensor 67, a pressure sensor, and the like are provided in the hot water tank 60 to control an appropriate temperature, pressure, etc., and the water supply line 62 and the hot water outflow line 65 are provided with open / 63 are preferably provided.

When the temperature of the hot water excessively rises and the pressure in the hot water tank 60 becomes excessively high, the safety line 68 is opened so that the hot water is automatically discharged to the outside, And a safety valve 69 can be constructed.

A check valve 36 is provided in the hot water heating and cooling line 52 that has passed through the hot water tank 60 to prevent the refrigerant from flowing back to the hot water tank 60 when the hot water production system 50 is not used .

1, reference numeral 26 denotes a suction strainer which can be configured in a refrigeration cycle.

The humidifying unit 15 and the heater unit (not shown) are preferably provided in the temperature and humidity indoor unit 10.

The humidifying device 15 can be configured to introduce heated water from the hot water tank 60 and supply it to the room by heating and evaporating. Of course, it is also possible to use a known humidifying device constituted in the constant temperature / humidity indoor unit 10.

The humidification device 15 may be configured to measure the humidification state by providing a float sensor on the front cover side of the indoor unit. Such a flow sensor can quickly check and adjust the operating state of the humidifying device, thereby facilitating maintenance.

Further, it is preferable that the heater device is configured to generate heat by using electricity. It is also possible to constitute heating without using a heater by using the principle of the refrigeration cycle. The heat pump system utilizing the principle of the refrigeration cycle is well known, so that the drawing examples and explanations thereof are omitted.

The operation of the thermo-hygrostat provided with the energy-saving hot water production system according to an embodiment of the present invention will be described with reference to FIGS. 2 and 3. FIG.

FIG. 2 is a view for explaining a hot water production use cycle in an embodiment of the present invention, and FIG. 3 is a view for explaining a hot water production stop cycle in an embodiment of the present invention.

The thermostat and the hygrostat according to the present invention can implement an operation mode such as hot water production use cycle and hot water production shutdown cycle according to the operation of the three-way valve 34. [

Referring to FIG. 2, refrigerant and hot water flow in the hot water production use cycle are switched by the flow path switching operation of the three-way valve 34 so that the refrigerant passes through the compressor 30, the oil separator 32, the three- The hot water coil portion 56 in the hot water tank 60, the check valve 36, the condenser 40, the expansion valve and the evaporator of the temperature and humidity indoor unit 10, the liquid separator 22, Through the suction strainer 26, to the compressor 30 again.

The water supplied to the lower part of the hot water tank 60 through the water supply line 62 flows through the hot water outflow line 65 connected to the upper part of the hot water tank 60 after being heat- To the hot water source.

When the hot water is to be used, the bypass valve 72 is closed so that the water discharged from the hot water tank 60 through the hot water outlet line 65 passes through the high temperature heat exchanger 70, Exchanges heat with the high-temperature refrigerant, is further heated and discharged into the hot water outflow line 65 at a high temperature, so that the hot water can be supplied.

3, the refrigerant flows through the compressor 30, the oil separator 32, the three-way valve 34, the condenser 34, and the condenser 34 by the flow path switching operation of the three-way valve 34, The indoor unit 40, the constant temperature and humidity indoor unit 10, the liquid separator 22, the suction strainer, and then flows back to the compressor 30. At this time, the refrigerant does not flow toward the hot water coil portion 56 on the side of the hot water tank 60 but circulates directly toward the condenser 40 and flows back toward the hot water coil portion 56 by the check valve 33 .

The water supplied to the hot water tank (60) is not heated because no heat is exchanged.

FIG. 4 is a block diagram illustrating a thermo-hygrostat provided with an energy-saving hot water production system according to another embodiment of the present invention.

Referring to FIG. 4, the thermo-hygrostat provided with the energy-saving hot water production system according to another embodiment of the present invention basically comprises a humidifying device 80 improved in construction of the thermo-hygrostat according to an embodiment of the present invention, And the reheating device 90 are applied or added in place of the reheating device 90.

The humidification device 80 and the reheat device 90, which are additional components of the constant temperature / humidity device according to another embodiment of the present invention, will be described.

The humidification device 80 is installed inside the indoor unit 10 and includes a humidification tank 86 connected to the hot water outflow line 65 side by an indoor line 66 and supplied with high temperature water, And a jetting unit 88 connected to the jet pump 86 for jetting water in a vapor state.

The indoor line 66 connected to the humidification tank 86 is preferably provided with an on-off valve 84 for interrupting the supply of the hot water to the humidifier 80.

Further, the humidification tank 86 may be constructed by installing a heater for heating hot water using electricity.

Next, the reheater 90 includes a reheat coil 96 housed in the indoor unit 10, and the reheat coil 96 is supplied with hot water through the indoor line 66 and hot water is supplied to the return line 97 (Recovered) to the hot water tank 60 through the hot water tank 60.

It is preferable to provide an on-off valve 94 on the line connecting to the indoor line 66 and a check valve 99 on the return line 97 side to prevent circulation pump 98 and reverse flow. And the return line 97 is connected to the lower side of the hot water tank 60.

When the humidifying device 80 is used for humidifying the room, the opening / closing valve 84 is opened to open the humidifying chamber 86, It is possible to spray water in a misted state through the sprayer 88 and the sprayer 88. The moisture from the humidifying device 80 is supplied to the room together with the air that is discharged into the room (discharged) and discharged to the room. Since the water provided in the humidifier tank 86 is hot water from the hot water tank 60, the humidifier 80 can greatly reduce the time and energy required for water heating (vaporization) using a separate humidifying heater It is possible to provide a further improved humidification efficiency.

When the reheater 90 is used for indoor heating, the heating operation can be performed by opening the on-off valve 94 and passing the hot water through the reheat coil 96. In order to lower the indoor humidity, the indoor temperature can be compensated by passing the hot water through the reheating coil 96 by opening the on-off valve 94 according to the set indoor temperature during the dehumidification operation using the refrigeration cycle.

As described above, the energy-saving hot water production system according to another embodiment of the present invention uses hot water produced by heating with waste heat generated when condensing refrigerant is used for indoor humidification and heating. Therefore, the operation of humidification, Dehumidification) can be greatly reduced.

The components other than the humidification device 80 and the reheat device 90 are the same as or similar to the constant temperature / humidity device according to the embodiment of the present invention described above, and therefore, the same reference numerals are used to denote the same components, and repetitive description thereof will be omitted. 4, reference numeral 12 denotes an evaporator.

As described above, the technical ideas described in the embodiments of the present invention can be implemented independently of each other, and can be implemented in combination with each other. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art. It is possible. Accordingly, the technical scope of the present invention should be determined by the appended claims.

10: constant temperature and humidity indoor unit 15: humidifier
16: Flow sensor 20: Outdoor unit
22: liquid separator 24: pressure gauge
26: Suction strainer 30: Compressor
32: Oil separator 33: Refrigerant flow line
34: Three-way valve 36: Check valve
40: condenser 42: condenser fan
50: hot water production system 52: hot water heating refrigerant line
56: hot water coil part 60: hot water tank
62: water supply line 63: opening / closing valve
65: hot water outlet line 66: indoor line
67: temperature sensor 68: safety line
69: Safety valve 70: High temperature heat exchanger
72: bypass valve 74: high temperature line
80: humidifying device 84: opening / closing valve
86: humidifier box 88: dispenser
90: Reheating device 94: Opening / closing valve
96: reheat coil 97: return line
98: circulation pump 99: check valve

Claims (6)

A compressor, a condenser, an expansion valve, and an evaporator constituting a refrigeration cycle;
A constant temperature and humidity indoor unit provided with the expansion valve and the evaporator;
A three-way valve provided on a refrigerant flow line connecting the compressor and the condenser;
A hot water heating refrigerant line connected to the inlet of the condenser and connected to the three-way valve, wherein the refrigerant flows when the three-way valve is switched, and a hot-water coil part having a coil-
A hot water supply line is connected to the lower side and a hot water outlet line is connected to the upper side, and the hot water heating and cooling line is passed through the inside of the hot water heating and cooling line so that the water supplied to the lower side exchanges heat with the refrigerant in the lower space. A hot water tank disposed therein;
A high temperature heat exchanger disposed outside the hot water tank and configured to allow a portion of the hot water heating and refrigerant line to pass from the three-way valve to the hot water tank;
A bypass valve provided in the hot water line for bypass and the hot water outlet line connected to the hot water heat exchanger in the hot water outlet line so as to bypass the hot water flowing along the hot water outlet line to the hot water heat exchanger;
And a humidifying device installed in the temperature and humidity indoor unit and humidifying the room by supplying hot water from the hot water outflow line through an indoor line connected to the hot water outflow line and injecting the hot water into a steam state,
Constant temperature and humidity system equipped with energy saving hot water production system. The method according to claim 1,
The humidifying device includes: a humidifying passage for receiving hot water from the indoor line; A heater for heating the hot water supplied to the humidifier; And a jet portion connected to the humidifier and jetting hot water in a vapor state,
Constant temperature and humidity system equipped with energy saving hot water production system. The method according to claim 1 or 2,
A safety line for discharging the hot water in the hot water tank to the outside is connected to the hot water tank according to the internal pressure of the hot water tank,
A safety valve is installed in the safety line,
A reheater for receiving hot water from the hot water outlet line through the indoor line to heat the room,
The hot water passing through the reheater is returned to the hot water tank through the return line,
Constant temperature and humidity system equipped with energy saving hot water production system. delete delete delete

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