JP6823316B2 - Heat pump type cold / hot water generator - Google Patents

Description

The present invention relates to a heat pump type cold / hot water generator for a cold / hot water type radiant air conditioning panel.

Air conditioning by the conventional forced convection air conditioning method has a drawback that the operating energy is large. In addition, cold air and warm air often hit the body directly, which may make the draft uncomfortable. In addition, noise generated from the air outlet and temperature unevenness in the room may cause problems. As an air conditioning system that solves these problems, the cold / hot water radiant air conditioning panel air conditioning system has begun to be adopted, but since the facilities where the cold / hot water radiant air conditioning panels are installed are often large, the heat source system was also large. .. Since each system component (cooling tower, heat exchanger, circulation pump, cold / hot water generator, tanks, electromagnetic valve, humidifier, dehumidifier, etc.) is combined and configured, an installation space such as a machine room is also required. Met. In some cases, a cold / hot water generator such as an absorption type cold / hot water generator or a heat pump type chiller with higher thermal efficiency is required. For example, Patent Document 1 discloses a heat pump type cold / hot water generator.

Japanese Unexamined Patent Publication No. 11-237086

The large heat source system, heat pump type cold / hot water generator for air conditioning, absorption type cold / hot water generator, heat pump type chiller, etc. described above are all large, and when installed on the balcony or balcony of a condominium, evacuate in the event of a fire. We needed a size that wouldn't get in the way. In addition, the energy required for air conditioning of the conventional forced convection air conditioning system is large, and there is no minimum required cold / hot water generator suitable for cold / hot water radiant air conditioning panel air conditioning. Further, in the air conditioning using the conventional cold / hot water type radiant air conditioning panel, another machine is required for humidity control. The above reasons have hindered the spread of cold / hot water radiant air conditioning panel air conditioning. Therefore, it is necessary to downsize the cold / hot water generator so that the cold / hot water type radiant air conditioner panel air conditioner can be installed as an alternative to the conventional wall-mounted room air conditioner or ceiling cassette type air conditioner installed in a small space. It was.

Therefore, the present invention provides a heat pump type cold / hot water generator capable of miniaturization.

One embodiment of the present invention includes a heat storage tank, a heat storage coil that heats and cools the cold and hot water in the heat storage tank by evaporation and compression of the refrigerant, a heat source machine that compresses the refrigerant, and cold and hot water emission from the heat storage tank. In a heat pump type cold / hot water generator that has a circulation pump that sends out to the air conditioning panel and supplies the cold / hot water in the heat storage tank to the cold / hot water type radiation air conditioning panel, it is provided between the heat storage tank and the cold / hot water type radiation air conditioning panel. The replacement device is equipped with a replacement device that takes out cold / hot water from the upper part of the heat storage tank during heating, supplies return water from the cold / hot water type radiation air conditioning panel from the lower part of the heat storage tank, and supplies return water from the lower part of the heat storage tank during cooling. While taking out cold and hot water, the return water from the cold and hot water type radiation air conditioning panel is supplied from the upper part of the heat storage tank.

According to this configuration, the heat storage tank functions as a heat exchanger that transfers the heat of the refrigerant provided by the heat source machine to the water in the circuit. Therefore, by controlling the temperature of the refrigerant with the heat source machine, the water in the heat storage tank can be changed to cold water or hot water. Then, since it is not necessary to prepare a cold water storage tank for storing only cold water and a hot water storage tank for storing only hot water, the number of parts for forming the cold / hot water generator is reduced. That is, since the heat storage tank has a plurality of functions, the number of parts forming the heat system is reduced. Therefore, it is possible to reduce the size and weight of the heat pump type cold / hot water generator.

In some forms, the heat pump type cold / hot water generator further comprises an conditioned heat exchange chamber box for accommodating the heat storage tank, and the conditioned heat exchange chamber box utilizes heat dissipation from the heat storage tank to take in outside air from the outside. On the other hand, conditioned air may be created by cooling and dehumidifying in the summer and heating and humidifying in the winter, and the conditioned air may be sent into the room. According to this configuration, the heat storage tank can be used as a heat source for a new heat system, so that conditioned air can be produced while suppressing an increase in the number of parts. Furthermore, dew condensation in the room and cold / hot water type radiant air-conditioning panel due to humidity in summer is prevented, and drying in winter is reduced. Therefore, the indoor environment can be made comfortable.

In some embodiments, the heat storage tank may have a first temperature sensor located above the outer surface of the heat storage tank and a second temperature sensor located below the outer surface of the heat storage tank. According to this configuration, the heat source machine can be controlled by using the information obtained by the first temperature sensor and the second temperature sensor.

In some embodiments, the first temperature sensor and the second temperature sensor may be configured to work with the heat source unit. According to this configuration, since the operation of the heat source machine is controlled by the first temperature sensor and the second temperature sensor, it is possible to control the temperature of the water in the heat storage tank to a temperature suitable for cooling and heating respectively. Become. Therefore, it can contribute to energy saving.

In some embodiments, the heat storage tank may have heat exchange fins on its outer surface. According to this configuration, the heat of the heat storage tank can be suitably released.

In some forms, the heat storage tank has an inspection port portion that also serves as a refrigerant penetration portion and an inspection port, and the refrigerant penetration portion may have a sheath tube structure. According to this configuration, the heat storage coil can be suitably introduced into the heat storage tank while maintaining watertightness.

In some forms, a heat exchange unit provided in the return path from the hot / cold water type radiation air conditioning panel to the heat storage tank may be further provided, and the heat exchange unit may effectively take in the heat of the groundwater to enhance the energy saving effect. According to this configuration, the energy efficiency of the heat pump type cold / hot water generator can be further improved.

As described above, according to the present invention, there is provided a heat pump type cold / hot water generator capable of miniaturization.

It is a system diagram of the heat pump type cold / hot water generator for the cold / hot water type radiant air-conditioning panel. It is a system diagram of the air conditioning heat exchange chamber box. It is a detailed view of a heat storage tank. It is a figure which shows roughly the structure of the cold / hot water type radiant air conditioning system.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are designated by the same reference numerals, and duplicate description will be omitted.

As shown in FIG. 1, a heat pump type cold / hot water generator (hereinafter referred to as “cold / hot water generator 50”) is used in a cold / hot water type radiation air conditioning system (hereinafter referred to as “air conditioning system 90”). Radiation is a type of heat transfer method, in which heat is transferred from the higher temperature to the lower temperature by far infrared rays. Radiant air conditioning is from the human body (higher temperature) to the ceiling, walls, and floor (temperature). A feeling of temperature is felt by the heat transfer to the lower one.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3. In FIG. 1, the broken line arrow indicates the direction in which hot water flows. Further, in FIG. 1, the solid arrow indicates the direction in which cold water flows. The air conditioning system 90 includes a cold / hot water generator 50 and a cold / hot water radiant air conditioning panel 11. The cold / hot water generator 50 generates cold water and hot water to be supplied to the cold / hot water type radiant air conditioning panel 11. The hot / cold water generator 50 is installed outdoors, for example, on the balcony of an apartment house. On the other hand, the cold / hot water type radiant air conditioning panel 11 is installed on the ceiling of the room, for example.

The heat source machine 1 is, for example, an outdoor unit (Mitsubishi Electric MXZ-YX448S) of an air-cooled heat pump type wall-mounted room air. The outdoor unit is exclusively for air air conditioning by the forced convection air conditioning system, but the air type heat dissipation coil composed of copper pipes and aluminum fins, which are the internal parts of the indoor unit of the room air conditioner, is submerged in the heat storage tank 2 to cool and hot water type heat storage coil. The usage has been changed to 3. As a result, the heat source machine 1 has been changed to the heat source machine 1 for the cold / hot water generator 50 for the cold / hot water type radiant air conditioning system. The heat source machine 1 is connected to the heat storage coil 3 by a refrigerant pipe 14.

The heat storage tank 2 has a function of a heat exchanger that transfers the heat of the refrigerant from the heat source machine 1 to the water in the circuit, and at the same time, has a function of a cold water storage tank and a hot water storage tank. As described above, since the heat storage tank 2 has some functions, the number of parts forming the heat system is reduced. Therefore, it contributes to making the thermal system smaller and lighter.

In FIG. 1, the heat source machine 1 is, for example, an outdoor unit (Mitsubishi Electric MXZ-YX448S) of an air-cooled heat pump type wall-mounted room air. Its heating capacity is 3.2 kW and its cooling capacity is 2.2 kW. On the other hand, the minimum capacity required to air-condition a 16-mat room with a forced convection wall-mounted room air conditioner is generally a heating capacity of 6.3 kW and a cooling capacity of 5.0 kW. Therefore, the power consumption of the cold / hot water generator 50 according to the present embodiment is about twice as efficient, and the energy saving effect is large.

The inspection port 16 with a sheath tube (inspection port portion, refrigerant penetration portion) having a sheath tube structure is an inspection port with a sheath tube for inspecting the inside of the heat storage tank 2 and the heat storage coil 3, and also serves as a penetration member for the refrigerant pipe 14. ing. The sheath pipe portion is a 25A (outer diameter: 35φ) steel pipe that can penetrate together with the flare joint of the refrigerant pipe (6.35φ × 9.52φ). The sheath tube portion has a length of about 150 mm and is tilted at an acute angle of, for example, about 30 degrees toward the heat source machine 1. This is to reasonably pipe the refrigerant pipe in the direction of the heat source machine 1 and to prevent water leakage. During the operation of the air conditioning system 90, there is a pressure of about 0.2 to 0.35 MPa, thermal expansion and contraction due to cold and hot water, so after passing the refrigerant pipe 14 through the inspection port 16 with sheath pipe, silicon caulking material, etc. Fill with water blocking material to prevent water leakage.

The heat generated by the heat source machine 1 changes the temperature of the water 17 in the heat storage tank 2 by the heat storage coil 3 to become cold water or hot water. The heat storage tank 2 has, for example, the maximum size (about 250φ (diameter) × 700L (length), about 34L (about 250φ (diameter) × 700L (length)) that can be accommodated in the lower stage of the outdoor unit stand (Pakuma Kogyo B-HWT4) for flat ground / two-stage air conditioning. Capacity)). The heat storage tank 2 is made of stainless steel, the main body is made of a stainless steel plate having a thickness of 1.5 mm to 3.0 mm, and the inspection port 16 with a sheath tube is made of a stainless steel plate having a thickness of 3.0 mm to reduce the weight of the heat storage tank 2. The piping circuit is also made lighter by welding stainless steel pipes. Various materials can be used as long as they are durable materials. The cold / hot water whose temperature has been changed by the heat source machine 1 is repeatedly circulated to the cold / hot water type radiant air-conditioning panel 11 by the circulation pump 4 (Ebara Corporation 20LPN5.04S30L / min × 2.5m ² × 0.04kW) for radiant air conditioning. Do.

Water has the highest specific gravity at 4 ° C., and the specific gravity becomes lighter regardless of whether the water temperature is higher or lower than 4 ° C. Conventionally, the cold water is moved to the upper part of the heat storage tank 2 by lowering the temperature to 4 ° C. or lower and used as a heat source of the forced convection air conditioning system.

The cold / hot water temperature required for this cold / hot water radiant air conditioning system is about 10 ° C to 40 ° C, which is higher than the cold / hot water temperature required for the conventional forced convection air conditioning system. Since it is used, cold water of 4 ° C or less is not required and energy is saved. Therefore, the cold / hot water inside the heat storage tank 2 has uneven heat, the upper part of the heat storage tank 2 tends to warm up, and the lower part of the heat storage tank 2 tends to cool down. In order to effectively utilize the heat unevenness in the heat storage tank 2, it is necessary to replace the circulation path of the cold / hot water according to the switching of the heating / cooling operation.

The circulation path of cold and hot water is performed by the replacement device 40. The replacement device 40 is composed of solenoid valves 5 and 6 and piping. During the heating operation, the two solenoid valves 6 are closed, hot water is taken out from the upper part of the heat storage tank 2, heat is transferred by the cold / hot water type radiant air conditioning panel 11, and then returned to the lower part of the heat storage tank 2. During the cooling operation, the two solenoid valves 5 are closed, cold water is taken out from the lower part of the heat storage tank 2, heat is transferred by the cold / hot water type radiant air conditioning panel 11, and then returned to the upper part of the heat storage tank 2. As the solenoid valves 5 and 6, the X-port type 4-way type is preferable because it is small, but 4 2-way valves can also be used. The solenoid valves 5 and 6 are, for example, off-the-shelf products (Nippon Valve Control CA1A-205YYF-0020).

An expansion tank 7 is provided to protect the hot / cold water circuit. The expansion tank 7 is connected to an outlet provided on the upper part of the heat storage tank 2.

The operation control follows the operation switching of the heating / cooling of the heat source unit 1 by the remote controller 30. The temperature sensor 8 installed on the outer surface of the heat storage tank 2 measures the temperature of cold and hot water to control the operation. During the heating operation, the temperature of cold / hot water is measured by the temperature sensor 8A (first temperature sensor) at the top of the heat storage tank 2. During the cooling operation, the temperature sensor 8B (second temperature sensor) at the bottom of the heat storage tank 2 measures. The temperature sensors 8A and 8B are selected by switching the cooling / heating operation, the temperature sensor 8A is selected during the heating operation, and the temperature sensor 8B is selected during the cooling operation. Be sure to select either of the temperature sensors 8A and 8B. The temperature sensors 8A and 8B are linked with the heat source machine 1. Specifically, the heat source machine 1 is stopped when the temperature sensor 8A detects the upper limit peak cut temperature (temporarily 41 ° C.) during the heating operation according to the measured temperature. After that, when the temperature sensor 8A detects the recovery temperature (temporarily 29 ° C.), the temperature sensor 8A automatically recovers and restarts the operation of the heat source machine 1. During the cooling operation, the heat source machine 1 is stopped when the temperature sensor 8B detects the temperature lower limit peak cut temperature (temporarily 9 ° C.). After that, when the temperature sensor 8B detects the recovery temperature (temporarily 16 ° C.), the temperature sensor 8B automatically recovers and restarts the operation of the heat source machine 1.

The temperature sensors 8A and 8B are installed at the upper and lower parts of the outer surface of the heat storage tank 2. If water leaks in the piping line, air pools in the piping will occur and the cold / hot water temperature cannot be measured. This is to prevent it from becoming impossible.

It takes time (about 30 minutes) to start up until cold and hot water is completed. Therefore, the operation method is basically continuous operation in each operation mode of heating and cooling. Although the energy required for startup is large, air-conditioning operation can be maintained with less energy after cold / hot water is produced.

When the pressure is measured by the pressure sensor 9 and an abnormal pressure is detected, the heat source machine 1 is stopped. The pressure sensor 9 is arranged between the hot / cold water type radiant air conditioning panel 11 and the circulation pump 4.

The air conditioning system 90 is provided with a make-up water valve 12, a drain valve 13, and a humidifying water supply 15 for filling tap water and for humidification. The make-up water valve 12 and the drain valve 13 are connected to an outlet provided on the lower side of the heat storage tank 2. The humidified water supply 15 branches from the water supply pipe to the heat storage tank 2.

The cold / hot water generator 50 according to the present embodiment includes a heat exchange unit 33 with a water pipe as a part of a return route from the hot / cold water type radiant air conditioning panel 11 to the heat storage tank 2. Specifically, it is arranged between the cold / hot water type radiant air conditioning panel 11 and the circulation pump 4. With this configuration, the heat of the groundwater 34 can be effectively taken in and the energy saving effect can be enhanced.

In FIG. 2, the air conditioning heat exchange chamber box (hereinafter, simply referred to as “chamber box 19”) is represented. The lower six surfaces of the flat ground / two-stage air conditioner outdoor unit stand are surrounded by steel panels to form the chamber box 19. The inner surface of the panel is insulated to prevent heat dissipation. Inside the chamber box 19, a heat storage tank 2 (with a built-in heat storage coil 3), a circulation pump 4, an expansion tank 7, solenoid valves 5 and 6, temperature sensors 8A and 8B, pressure sensors 9, and humidified water supply 15 A system was constructed in which the ball valve 10 (see FIG. 1) and the control device 18 were connected by a piping circuit. Note that FIG. 2 shows only the heat storage tank 2 and the spray nozzle 25 in the chamber box 19, and the other components are not shown.

The end wall of the chamber box 19 has an outside air intake 23 and an air supply duct connection port 26. The outside air intake 23 includes a filter 23a. The outside air 28 taken in from the outside air intake 23 is heat exchanged by heat dissipation from the heat storage tank 2. Heat exchange fins 20 (for air) are attached to the surface of the heat storage tank 2 to improve heat exchange efficiency.

In the process of air conditioning the outside air 28 in the chamber box 19, during the cooling operation in summer, moisture adheres to the heat storage tank 2 and the heat exchange fin (for air conditioning) 20 as dew condensation water at the same time as cooling and is dehumidified. The air-conditioned air 29 that has been cooled and dehumidified is guided to the air supply duct connection port 26, and is supplied to the inside of the room through the air supply duct 27.

In addition, during winter heating operation, humidification is performed along with heating. Humidification is done only in winter. When the make-up water valve 12 (see FIG. 1) is opened, tap water is supplied through the make-up water pipe 24, and a very small amount of mist-like water is continuously sprayed from the spray nozzle 25 to humidify. The conditioned air 29 is guided to the air supply duct connection port 26 and is connected to the room by the air supply duct 27. The conditioned air 29 follows the existing ventilation fan in the room and is supplied to the room by a third-class ventilation method according to the ventilation volume.

A drain pan 21 is provided on the lower surface 19A of the chamber box 19, and condensed water and excess water are discharged from the drain valve 22.

According to the heat pump type cold / hot water generator 50, the size and weight are reduced, and the size is the same as that of the conventional room air conditioner outdoor unit installed in two stages, and the purpose is to install it on the balcony or balcony of a condominium. In addition to achieving a size that does not hinder evacuation in the event of a fire, the heat pump type cold / hot water generator 50 has been made lighter in weight, more portable by human power, and easier to install.

In addition, the air conditioning system 90 can heat and humidify in winter and cool and dehumidify in summer by creating air conditioning air 29 in the chamber box 19 and sending it into the room, and the room is dried, dehumidified, and cold / hot water type radiant air conditioning. Condensation on the panel 11 could be reduced.

The air conditioning system 90 having the above configuration will be further described from another aspect. As shown in FIG. 4, the air conditioning system 90 has a first heat system 71, a second heat system 72, and a third heat system 73.

The first heat system 71 adjusts the temperature of the room 101 by the cold / hot water type radiant air conditioning panel 11. The first heat system 71 includes a hot / cold water type radiant air conditioning panel 11, a heat storage tank 2, and a piping system 74. The cold / hot water type radiant air conditioning panel 11 is arranged in the indoor 101, and the heat storage tank 2 is arranged in the outdoor 102. The cold / hot water type radiant air-conditioning panel 11 radiates the heat of the cold water or hot water into the room 101 by circulating the cold water or hot water supplied from the heat storage tank 2. The heat storage tank 2 is a supply source of cold water or hot water supplied to the cold / hot water type radiant air-conditioning panel 11, controls the temperature of the cold water or hot water to a predetermined temperature, and cools the cold water or hot water via the piping system 74. It is supplied to the water type radiant air conditioning panel 11. The piping system 74 guides cold water or hot water from the heat storage tank 2 to the cold / hot water type radiant air conditioning panel 11.

The hot / cold water type radiant air conditioning panel 11 is connected to the heat storage tank 2 via the piping system 74. Specifically, the water supply portion 11a of the cold / hot water type radiant air conditioning panel 11 is connected to the panel side drainage portion 74a of the piping system 74. The drainage portion 11b of the hot / cold water type radiant air conditioning panel 11 is connected to the panel side water supply portion 74b of the piping system 74. The upper water supply / drainage section 2a of the heat storage tank 2 is connected to the first tank side water supply / drainage section 74c of the piping system 74. The lower water supply / drainage section 2b of the heat storage tank 2 is connected to the second tank side water supply / drainage section 74d of the piping system 74. According to such a connection configuration, cold water or hot water, which is a heat medium supplied from the heat storage tank 2, is supplied to the cold / hot water type radiant air conditioning panel 11 via the piping system 74. The cold water or hot water that has passed through the inside of the cold / hot water type radiant air conditioning panel 11 returns to the heat storage tank 2 again via the piping system 74.

Here, the piping system 74 has a replacement device 40, and functions to switch the outlet for taking out cold water or hot water from the heat storage tank 2 by the replacement device 40. The take-out port is the upper water supply / drainage section 2a and the lower water supply / drainage section 2b. For example, when heating is performed by the cold / hot water type radiant air conditioning panel 11, hot water is taken out from the upper water supply / drainage unit 2a and returned to the lower water supply / drainage unit 2b. On the other hand, when cooling is performed by the cold / hot water type radiant air conditioning panel 11, cold water is taken out from the lower water supply / drainage section 2b, and the return water is sent to the upper water supply / drainage section 2a.

As shown in FIG. 3, the heat storage tank 2 has a cylindrical hollow shape. The shape of the heat storage tank 2 is not limited to a cylindrical shape, and may be a rectangular parallelepiped hollow shape. The heat storage tank 2 has a tank body 2B, a heat exchange fin 20 provided on the outer peripheral surface of the tank body 2B, and an inspection port 16 with a sheath tube. The inspection port 16 with a sheath tube is attached to the tank body 2B by using a packing 31 and a bolt nut 32. The upper water supply / drainage portion 2a is provided on the upper side on the peripheral surface of the tank body 2B. The lower water supply / drainage portion 2b is provided on the lower side on the peripheral surface of the tank body 2B. For example, when the cylindrical tank body 2B is viewed from the side, the upper water supply / drainage section 2a is provided on the upper side of the cylindrical tank body 2B along the vertical direction, and the lower water supply / drainage section 2b is provided on the lower side. Further, the upper water supply / drainage portion 2a is provided on the side close to the end wall 2C. On the other hand, the lower water supply / drainage portion 2b is provided on the side close to the end wall 2C on the opposite side of the end wall 2C to which the upper water supply / drainage portion 2a is close. According to the upper water supply / drainage unit 2a and the lower water supply / drainage unit 2b, cold / hot water flows diagonally (see arrows W1 (hot water) and W2 (cold water)) when the heat storage tank 2 is viewed from the side. Therefore, the heat exchange efficiency from the heat storage coil 3 built in the heat storage tank 2 can be improved. Further, by providing the upper water supply / drainage portion 2a and the lower water supply / drainage portion 2b on the peripheral surface, it is not necessary to provide them on the end walls 2C and 2D. Then, since the number of pipes provided on the end wall 2D provided with the inspection port 16 with a sheath pipe is reduced, the inspection work can be easily performed.

The tank body 2B has a watertight structure, and the inside thereof is filled with cold water or hot water. For example, when cooling is performed by the cold / hot water type radiant air conditioning panel 11, the water temperature in the heat storage tank 2 is controlled to about 10 ° C. to 15 ° C. Therefore, the "cold water" in the present embodiment means water having a temperature of about 10 ° C. to 15 ° C. Further, when heating is performed by the cold / hot water type radiant air conditioning panel 11, the water temperature in the heat storage tank 2 is controlled to about 30 ° C. to 40 ° C. Therefore, the "warm water" in the present embodiment means water having a temperature of about 30 ° C. to 40 ° C.

As described above, there is heat unevenness in the cold water or hot water in the heat storage tank 2. For example, the water filled in the heat storage tank 2 has a temperature difference of about 5 ° C. between the upper part and the lower part.

Cold water or hot water is discharged and accepted to the outside of the tank body 2B by the upper water supply / drainage unit 2a and the lower water supply / drainage unit 2b. The upper water supply / drainage portion 2a is provided on the upper side in the depth direction of the cold water or hot water filled in the tank body 2B. For example, it can be said that the upper water supply / drainage unit 2a is provided above the lower water supply / drainage unit 2b. Further, the explanation can be made based on the temperature distribution of cold water or hot water filled in the tank body 2B. The temperature of the cold water or hot water filled in the tank body 2B is relatively high on the upper side and relatively low on the lower side. Therefore, it can be said that the upper water supply / drainage section 2a is provided in a region where the temperature is relatively high, and the lower water supply / drainage section 2b is provided in a region where the temperature is relatively low.

As shown again in FIG. 4, the second heat system 72 controls the cold water or hot water in the heat storage tank 2 to a predetermined temperature. The second heat system 72 includes a heat source machine 1 and a heat storage coil 3. The heat source machine 1 is connected to the heat storage coil 3 via a pipe. Specifically, the heat medium sending section 1a of the heat source machine 1 is connected to the heat medium receiving section 3a of the heat storage coil 3. The heat medium receiving unit 1b of the heat source machine 1 is connected to the heat medium transmitting unit 3b of the heat storage coil 3. The heat generated by the heat source machine 1 is sent to the heat storage coil 3 by the heat medium. This heat medium reciprocates between the heat source machine 1 and the heat storage coil 3 through piping. The heat storage coil 3 is arranged inside the heat storage tank 2. The heat storage coil 3 applies heat to the water filled in the heat storage tank 2 by flowing a heat medium inside the heat storage coil 3.

The operation of the heat source machine 1 is controlled by using the output values of the temperature sensors 8A and 8B (see FIG. 3). The temperature sensor 8A may be attached to the outer surface of the heat storage tank 2 or may be arranged on a piping path connected to the upper water supply / drainage portion 2a. The temperature sensor 8B may be attached to the outer surface of the heat storage tank 2 or may be arranged on a piping path connected to the lower water supply / drainage portion 2b. In short, it may be provided in a place where the temperature corresponding to the hot water or cold water sent to the cold / hot water type radiant air conditioning panel 11 can be obtained.

The third heat system 73 provides the room 101 with regulated air in which the temperature and humidity are adjusted. The third heat system 73 has a chamber box 19 and an air supply duct 27. For example, in an apartment house or a detached house, a vent 103 for ventilation of the room 101 is provided on the outer wall. When the ventilation fan installed in the room 101 is operated, the room 101 becomes negative pressure and the outside air flows in from the ventilation port 103. Here, since the vent 103 is merely a through hole, hot outside air in summer and cold outside air in winter directly flow into the room 101. Therefore, the third heat system 73 creates regulated air by adjusting the temperature and humidity of the outside air sucked from the outside air intake 23 to some extent. Then, the adjusted air is sent into the room 101 via the air supply duct connection port 26 and the air supply duct 27. The room 101 may be a place where the cold / hot water type radiant air conditioning panel 11 is installed, or may be another place where the cold / hot water type radiant air conditioning panel 11 is not installed.

Although the chamber box 19 has already been described, it will be described more supplementarily with reference to FIG. The chamber box 19 has a hollow box shape. The heat storage tank 2 is housed so that its central axis faces the horizontal direction in the vicinity of substantially the center of each of the height direction, the vertical direction, and the width direction of the chamber box 19. Then, in the end wall 19C of the chamber box 19 facing one end wall 2C of the heat storage tank 2, an outside air intake port 23 is provided in a region facing the end wall 2C. Further, in the end wall 19D of the chamber box 19 facing the other end wall 2D of the heat storage tank 2, an air supply duct connection port 26 is provided in a region facing the end wall 2D. That is, the outside air intake port 23, the end walls 2C and 2D of the heat storage tank 2, and the air supply duct connection port 26 are arranged on the same horizontal line. According to such an arrangement, the outside air taken in from the outside air intake port 23 flows to the air supply duct connection port 26 along the axial direction of the heat storage tank 2. Then, the outside air comes into contact with the heat exchange fins 20 of the heat storage tank 2 for a relatively long time, so that the amount of heat exchanged can be increased.

Further, a spray nozzle 25 for adjusting the humidity is arranged inside the chamber box 19. The spray nozzle 25 is arranged above the heat storage tank 2 and sprays water toward the heat storage tank 2.

In short, the heat pump type cold / hot water generator 50 according to one form includes a heat storage tank, a heat storage coil that heats and cools the cold water or hot water in the heat storage tank by evaporation and compression of the refrigerant, and a heat source machine that compresses the refrigerant. It is equipped with a circulation pump that sends cold or hot water from the heat storage tank to the cold / hot water type radiant air conditioner panel, and a replacement device provided between the heat storage tank and the cold / hot water type radiant air conditioner panel. The replacement device takes out cold water or hot water from the upper part of the heat storage tank during heating, supplies return water from the cold / hot water type radiation air conditioning panel from the lower part of the heat storage tank, and takes out cold / hot water from the lower part of the heat storage tank during cooling. The return water from the hot / cold water type radiation air conditioning panel is supplied from the top of the heat storage tank.

Further, the cold / hot water type radiant air conditioning system according to another form includes a cold / hot water type radiant air conditioning panel and a heat pump type cold / hot water generator. The heat pump type cold / hot water generator includes a heat storage tank, a heat storage coil that heats and cools the cold water or hot water in the heat storage tank by evaporation and compression of the refrigerant, a heat source machine that compresses the refrigerant, and cold / hot water from the heat storage tank. It is equipped with a circulation pump that sends out to the water-type radiation air-conditioning panel and a replacement device provided between the heat storage tank and the cold / hot water-type radiation air-conditioning panel. The replacement device takes out cold water or hot water from the upper part of the heat storage tank during heating, supplies return water from the cold / hot water type radiation air conditioning panel from the lower part of the heat storage tank, and takes out cold / hot water from the lower part of the heat storage tank during cooling. The return water from the hot / cold water type radiation air conditioning panel is supplied from the top of the heat storage tank.

As described above, in the air conditioning system 90 according to the present embodiment, heat exchange is performed between the first heat system 71 and the second heat system 72, and the second heat system 72 and the third heat are exchanged. Heat exchange is performed with the system 73. Then, these two heat exchanges are performed by the heat exchange unit 80 composed of the heat storage coil 3, the heat storage tank 2, and the chamber box 19. That is, it is not necessary to provide an apparatus for each mode of heat exchange, and two heat exchanges can be performed by one heat exchange unit 80. Therefore, the air conditioning system 90 can be easily miniaturized. Further, the heat released from the heat storage tank 2 is used when creating the regulated air. Therefore, the heat loss of the entire system can be reduced and the thermal efficiency can be improved.

The present invention has been described in detail above based on the embodiment. However, the present invention is not limited to the above embodiment. The present invention can be modified in various ways without departing from the gist thereof.

For example, the heat pump type cold / hot water generator 50 according to the present embodiment is not particularly limited in the type of room in which it is installed, and can be installed in various rooms. The heat pump type cold / hot water generator 50 is not limited to the living room of a general house / condominium, but also has a library, a hospital room, a laboratory, and a dialysis because of its quietness and draft during operation and the feature of gently heating and cooling with less heat unevenness in the room. It is suitable for all small spaces such as rooms, audio rooms, theater rooms, Japanese-style rooms, tea rooms, bathrooms, toilets, newborn rooms, and music rooms, and can be greatly utilized for the widespread use of cold / hot water type radiation air conditioning panels 11.

For example, the above-mentioned temperature ranges of hot water and cold water are examples, and are not limited to this numerical range. The temperature range may be set to a range different from the above depending on the weather, the room temperature, and the heat exchange rate of the hot / cold water type radiant air conditioning panel 11.

1 Heat source machine 1a Heat medium receiving part 1b Heat medium receiving part 2 Heat storage tank 2a Upper water supply / draining part 2b Lower water supply / draining part 2B Tank body 3 Heat storage coil 3a Heat medium receiving part 3b Heat medium sending part 4 Circulation pumps 5, 6 Electromagnetic valves 7 Expansion tanks 8, 8A, 8B Temperature sensor 9 Pressure sensor 10 Ball valve 11 Cold / hot water type radiation air conditioning panel 11a Water supply part 11b Drainage part 12 Replenishment water valve 13 Drain valve 14 Refrigerant pipe 15 Humidified water supply 16 Inspection port with sheath pipe 17 Water 18 Control device 19 Chamber box (air conditioning heat exchange chamber box)
20 Heat exchange fins (for air)
21 Drain pan 22 Drain valve 23 Outside air intake 24 Supply water pipe 25 Spray nozzle 26 Air supply duct connection port 27 Air supply duct 28 Outside air 29 Air conditioning air 30 Remote control 31 Packing 32 Bolt nut 33, 80 Heat exchange unit 34 Ground water 40 Replacement device 50 Cold temperature Water generator 71 1st heat system 72 2nd heat system 73 3rd heat system 74 Piping system 74a Panel side drainage part 74b Panel side water supply part 74c 1st tank side water supply / drainage part 74d 2nd tank side water supply / drainage part 90 Air conditioning System 101 Indoor 102 Outdoor 103 Vent

Claims (6)

A heat storage tank, a heat storage coil that heats and cools the cold and hot water in the heat storage tank by evaporation and compression of the refrigerant, a heat source machine that compresses the refrigerant, and the cold and hot water from the heat storage tank to the cold and hot water type radiation air conditioning panel. In a heat pump type cold / hot water generator which has a circulation pump to send out and supplies the cold / hot water in the heat storage tank to a cold / hot water type radiation air conditioner panel.
A replacement device provided between the heat storage tank and the hot / cold water type radiant air conditioning panel ,
An air-conditioning heat exchange chamber box for accommodating the heat storage tank is provided.
The replacement device takes out the cold / hot water from the upper part of the heat storage tank at the time of heating, supplies the return water from the cold / hot water type radiation air conditioning panel from the lower part of the heat storage tank, and supplies the return water from the lower part of the heat storage tank at the time of cooling. While taking out the cold / hot water, the return water from the cold / hot water type radiation air-conditioning panel is supplied from the upper part of the heat storage tank .
The air-conditioning heat exchange chamber box uses the heat radiation from the heat storage tank to cool and dehumidify the outside air taken in from the outside in the summer and heat and humidify in the winter to create air-conditioned air. A heat pump type cold / hot water generator that sends the air into the room . The heat storage tank, a first temperature sensor disposed on the upper portion of the outer surface of the heat storage tank, having a second temperature sensor disposed below the outer surface of the heat storage tank, a heat pump type cold mounting serial to claim 1 Water generator. The heat pump type cold / hot water generator according to claim 2 , wherein the first temperature sensor and the second temperature sensor are configured to interlock with the heat source machine. The heat pump type cold / hot water generator according to any one of claims 1 to 3 , wherein the heat storage tank has heat exchange fins on the outer surface. The heat storage tank has an inspection port portion that also serves as a refrigerant penetration portion and an inspection port.
The heat pump type cold / hot water generator according to any one of claims 1 to 4 , wherein the refrigerant penetrating portion has a sheath tube structure. Further provided with a heat exchange unit provided on the return path from the hot / cold water type radiant air conditioning panel to the heat storage tank.
The heat pump type cold / hot water generator according to any one of claims 1 to 5 , wherein the heat exchange unit effectively takes in the heat of groundwater and enhances the energy saving effect.

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