JPWO2015064347A1 - Steam generating apparatus and steam generating heat pump - Google Patents

Abstract

The present invention relates to a steam generating device and a steam generating heat pump. The steam generating device (10) includes an upper pipe (22) and a lower pipe (24) at the upper and lower portions of the gas-liquid separator (16) and the evaporator (20), respectively. In this way, water in the gas-liquid separator (16) is supplied to the evaporator (20) through the lower pipe (24) and evaporated by heat exchange with the refrigerant flowing through the evaporator (20). The steam generated in the evaporator (20) is supplied to the gas-liquid separator (16) through the upper pipe (22), and a thermosiphon circuit for sending out from the gas-liquid separator (16) is formed. And the evaporator (20) and the gas-liquid separator (16) so that the outlet of the vapor in the evaporator (20) is lower than the level of the water stored in the gas-liquid separator (16). ) Is defined in the height direction.

Description

  The present invention relates to a steam generation device that generates steam by circulating water from a gas-liquid separator to an evaporator using a thermosyphon phenomenon, and a steam generation heat pump including the steam generation device.

  For example, since steam is required in a heat engine, a solid oxide fuel cell, or the like provided in a power generation facility, an industrial plant, or the like, a steam generator is usually provided.

  As such a steam generation device, Patent Document 1 discloses that an evaporator having a heat transfer core through which a refrigerant flows and a gas-liquid separator that stores water are arranged side by side. A steam generator using a thermosiphon phenomenon in which an upper part and a lower part are communicated with each other by an upper pipe and a lower pipe is disclosed. This steam generator generates water by circulating water in the gas-liquid separator to the evaporator through the lower pipe due to the thermosyphon phenomenon, and supplies the generated steam from the upper pipe to the gas-liquid separator. It is configured to send out to the equipment.

JP 2010-169364 A

  In the steam generation device having the conventional configuration as described in Patent Document 1, the gas-liquid separator and the evaporator are installed at substantially the same position in the height direction, so that the gas-liquid separator is transferred to the evaporator. The flow rate of the circulated water is always constant and cannot be controlled. For this reason, since the flow rate of the supplied water does not change even when the load on the evaporator fluctuates, it is difficult to improve the heat exchange performance in the evaporator, and the steam generation efficiency is low. .

  Therefore, it is conceivable to install a circulation pump in the middle of the lower pipe that supplies water from the gas-liquid separator to the evaporator, and to control the flow rate of the water supplied to the evaporator. In addition, the entire apparatus becomes larger and complicated by the circulation pump, and the cost also increases.

  The present invention has been made in consideration of the above-described problems of the prior art, can control the flow rate of water circulated to the evaporator, and can improve the steam generation efficiency and It aims at providing the steam generation heat pump provided with this steam generation device.

  A steam generator according to the present invention includes a gas-liquid separator that stores water and an evaporator through which a refrigerant flows, and the upper and lower parts of the gas-liquid separator and the evaporator are an upper pipe and a lower pipe, respectively. By communicating, the water in the gas-liquid separator is supplied to the evaporator through the lower pipe and evaporated by heat exchange with the refrigerant, and the vapor generated in the evaporator is vaporized through the upper pipe. A steam generation device that forms a thermosiphon circuit that is supplied to the liquid separator and is sent out from the gas-liquid separator, wherein an outlet of the steam in the evaporator is the water stored in the gas-liquid separator. The positional relationship in the height direction of the evaporator and the gas-liquid separator is defined so as to be lower than the water surface.

  The steam generation heat pump according to the present invention includes a gas-liquid separator that stores water and an evaporator through which a refrigerant flows, and the upper and lower portions of the gas-liquid separator and the evaporator are respectively connected to an upper pipe. By communicating with the lower pipe, the water in the gas-liquid separator is supplied to the evaporator through the lower pipe and evaporated by heat exchange with the refrigerant, and the vapor generated by the evaporator is passed through the upper pipe. A steam generator that forms a thermosiphon circuit that is supplied to the gas-liquid separator through the gas-liquid separator and is sent out from the gas-liquid separator, a compressor, a refrigerant condenser connected to the discharge side of the compressor, and the refrigerant A steam generation heat pump comprising: an expansion valve connected to an outlet side of the condenser; a refrigerant evaporator connected to an outlet side of the expansion valve; and a refrigerant cycle device for circulating the refrigerant, As the evaporator, the cold Using the refrigerant condenser of the cycle device, the evaporator and the gas-liquid separator are such that the outlet of the vapor in the evaporator is lower than the water level of the water stored in the gas-liquid separator. The positional relationship in the height direction is defined.

  According to such a configuration, in a circuit configuration in which water is circulated using the thermosiphon phenomenon, a height difference is provided between the evaporator and the gas-liquid separator, and the evaporator is placed below the gas-liquid separator. By disposing, the flow rate of water circulated and supplied from the gas-liquid separator to the evaporator via the lower pipe can be changed only by changing the water level in the gas-liquid separator. As a result, even when the load (heat exchange amount) in the evaporator changes, the heat exchange efficiency in the evaporator is optimally controlled to improve the steam generation efficiency and the amount of steam generated is also increased. In addition, the evaporator can be miniaturized.

  In this case, a water supply pipe for supplying water to the inside is connected to the lower pipe or the gas-liquid separator, and based on the amount of heat exchange between the water and the refrigerant in the evaporator, It is preferable to control the water level in the gas-liquid separator by changing the amount of water supplied from the water supply pipe.

  As the heat exchange amount, an input heat amount from the refrigerant to the evaporator may be used. Moreover, you may use the flow volume of the vapor | steam sent out from the said gas-liquid separator as said heat exchange amount.

  According to the present invention, the flow rate of water circulated and supplied from the gas-liquid separator to the evaporator can be changed with a simple configuration. Thereby, even when the load on the evaporator changes, the heat exchange efficiency in the evaporator can be optimally controlled, and the steam generation efficiency can be improved.

FIG. 1 is an overall configuration diagram of a steam generation heat pump including a steam generation apparatus according to an embodiment of the present invention. FIG. 2 is a configuration diagram of the steam generator shown in FIG. FIG. 3 is a table showing an example of correlation data between the amount of heat input to the evaporator and the water level of the gas-liquid separator.

  Hereinafter, preferred embodiments of the steam generator according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is an overall configuration diagram of a steam generation heat pump 12 including a steam generation device 10 according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of the steam generation device 10 shown in FIG.

  As shown in FIG. 1, a steam generation heat pump 12 generates a steam by evaporating water and sends the steam to the outside, and a refrigerant cycle apparatus serving as a heat source for generating steam in the steam generation apparatus 10 14 and a controller 15 (see FIG. 2) for controlling the system.

  First, the steam generator 10 includes a gas-liquid separator 16 that stores water inside the container, and an evaporator (steam generator) 20 through which a refrigerant circulating in the refrigerant cycle device 14 circulates. And the upper and lower portions of the evaporator 20 are communicated with each other by an upper pipe 22 and a lower pipe 24 to form a thermosiphon circuit.

  As shown in FIG. 2, the gas-liquid separator 16 is constituted by a cylindrical container along the vertical direction, and water is supplied from a water supply pipe 26 connected to a lower pipe 24 connected to a lower part of the gas-liquid separator 16. By supplying water, water is stored inside the container. The water supply pipe 26 is connected to a water pipe or a water tank (not shown), and a water pump 28 for pumping water into the gas-liquid separator 16 is provided in the middle. The water pump 28 can change the water level W <b> 1 of the water stored in the gas-liquid separator 16 by changing the water supply flow rate into the gas-liquid separator 16 by controlling the rotation speed by the controller 15. . Although the water supply pipe 26 can be connected to the gas-liquid separator 16 instead of the lower pipe 24, it is preferable to connect to the lower pipe 24 from the viewpoint of preventing cavitation in the suction pipe of the water pump 28.

  The gas-liquid separator 16 has a lower pipe 24 connected to its lower end wall, an upper pipe 22 connected to the upper part of the side wall, and a steam delivery pipe 30 connected to its upper end wall. The lower pipe 24 is a liquid pipe for supplying water stored in the gas-liquid separator 16 to the evaporator 20. The upper pipe 22 is a steam pipe for supplying the steam generated in the evaporator 20 to the gas-liquid separator 16. The steam delivery pipe 30 is used to send the steam generated by the evaporator 20 and supplied to the gas-liquid separator 16 via the upper pipe 22 and separated into gas and liquid to the external steam utilization device side. It is piping. That is, the connection port 16a of the lower pipe 24 becomes an outlet of water, the connection port 16b of the upper pipe 22 becomes an inlet of steam, and the connection port 16c of the steam delivery pipe 30 becomes an outlet of steam after gas-liquid separation.

  The steam delivery pipe 30 is provided with a pressure control valve (not shown). The controller 15 controls the opening of the pressure adjusting valve based on the vapor pressure in the gas-liquid separator 16 detected by a pressure sensor (not shown), thereby setting the vapor pressure sent from the vapor delivery pipe 30 to a predetermined value. Can be controlled.

  Inside the gas-liquid separator 16, a water level sensor 32 for measuring the water level W1 of the stored water is installed. The detected value WL of the water level W1 detected by the water level sensor 32 is transmitted to the controller 15 and used for controlling the rotational speed of the water pump 28.

  As shown in FIG. 2, the evaporator 20 evaporates the water supplied from the lower pipe 24 and supplies it to the gas-liquid separator 16 from the upper pipe 22 as steam.

  The evaporator 20 is, for example, a plate fin type heat exchanger, and a refrigerant passage 18a through which the refrigerant on the refrigerant cycle device 14 side circulates and a water passage 18b through which water (and steam) flows are alternately stacked. Yes. In the evaporator 20, the refrigerant passage 18a causes the refrigerant to flow from the upper side to the lower side in the vertical direction, and the water passage 18b causes the water to flow from the lower side to the upper side in the vertical direction. By exchanging heat, water evaporates and steam is generated. The water supplied from the lower pipe 24 is water (liquid phase) below the water level W2 in the evaporator 20, and is in a state where water and steam are mixed above the water level W2 (mixed phase). Then, it becomes steam (gas phase).

  The evaporator 20 has a lower pipe 24 connected to its lower end wall and an upper pipe 22 connected to its upper end wall. That is, the connection port 20a of the lower pipe 24 serves as an inlet for water, and the connection port 20b of the upper pipe 22 serves as an outlet for steam.

  As shown in FIG. 2, the evaporator 20 is installed at a lower position in the height direction than the gas-liquid separator 16. Specifically, in the steam generation device 10, the connection port 20 b that is the steam outlet in the evaporator 20 is positioned lower than the water level (water level W <b> 1) of water stored in the gas-liquid separator 16. In addition, the positional relationship in the height direction between the evaporator 20 and the gas-liquid separator 16 is defined. As a result, in the steam generation apparatus 10, a water level difference (water surface head difference) W is formed between the water level W 1 of the gas-liquid separator 16 and the water level W 2 of the evaporator 20, and the water in the gas-liquid separator 16 Can be reliably circulated to the evaporator 20.

  The controller 15 is a control device that performs overall control of the steam generation device 10 and the steam generation heat pump 12 including the same. The controller 15 controls the rotational speed of the water pump 28 based on the detected value WL from the water level sensor 32 and the heat exchange amount (heat output) in the evaporator 20 described later, and the water level in the gas-liquid separator 16. W1 is controlled. The controller 15 controls the water pump 28 so that the water level W1 corresponds to the fluctuation value when the heat exchange amount fluctuates while controlling the water level W1 to be constant. The controller 15 is provided with a storage unit (not shown) that stores data (for example, see FIG. 3) that serves as a control parameter for the water level W1.

  In such a steam generator 10, the water in the gas-liquid separator 16 is supplied to the evaporator 20 through the lower pipe 24 by the thermosiphon phenomenon. In the process of flowing through the water passage 18b of the evaporator 20, the water supplied to the evaporator 20 is heated and evaporated by heat exchange with the refrigerant flowing through the refrigerant passage 18a, and becomes vapor. Then, the steam generated in the evaporator 20 is supplied to the gas-liquid separator 16 via the upper pipe 22, and then water contained in the steam is separated in the gas-liquid separator 16, and the steam delivery pipe 30. Sent to the outside. The water separated at this time is stored in the gas-liquid separator 16 and supplied again from the lower pipe 24 to the evaporator 20.

  Next, as shown in FIG. 1, the refrigerant cycle device 14 includes a compressor 40, a refrigerant condenser 42 connected to the discharge side of the compressor 40, and an expansion valve connected to the outlet side of the refrigerant condenser 42. 44 and a refrigerant evaporator 46 connected to the outlet side of the expansion valve 44, and a refrigeration cycle (heat pump) that circulates refrigerant (refrigerant). The refrigerant that has been sucked into the compressor 40 and has become high-temperature and high-pressure is radiated and condensed by the refrigerant condenser 42, is adiabatically expanded by the expansion valve 44, absorbs heat from the outside by the refrigerant evaporator 46, and is evaporated again. Return to machine 40. As such a refrigerant cycle device 14, a well-known refrigeration circuit can be used.

  In the refrigerant cycle device 14, a refrigerant condenser 42 that condenses the high-temperature and high-pressure refrigerant discharged from the compressor 40 is used as the evaporator 20 of the vapor generation device 10. That is, the high-temperature and high-pressure refrigerant discharged from the compressor 40 circulates in the refrigerant condenser 42 (evaporator 20), where the water is heated by exchanging heat with the water circulating in the steam generation device 10, while The refrigerant itself is cooled and condensed, and sent to the expansion valve 44. Thus, in the steam generation heat pump 12, the heat generated in the refrigerant condenser 42 of the refrigerant cycle device 14 is used as a heat source for water evaporation in the steam generation device 10. Of course, a heat source other than the refrigerant cycle device 14 may be used as a heat source for water evaporation in the steam generation device 10.

  Next, an operation method of the steam generation apparatus 10 configured as described above and the operation and effect thereof will be described.

  First, as described above, the state of water in the evaporator 20 depends on water (liquid phase), a state in which water and steam are mixed (mixed phase), and steam (gas phase) in order from the bottom to the top. It is in a three-layer state. In general, water has low heat transfer efficiency in the liquid phase state, so that the heat exchange efficiency is low, and in the mixed phase state, the heat transfer property is best and the heat exchange efficiency is high. In the steam generator 10, the amount of steam generated in the evaporator 20 and the evaporator are controlled by controlling the flow rate of water flowing into the evaporator 20 so as to optimize the ratio of the mixed phase in the evaporator 20. The amount of water circulated to 20 is matched to maximize the efficiency of steam generation in the evaporator 20.

  For example, when the flow rate of water supplied to the evaporator 20 is increased in a state where the heat exchange amount (load) between the refrigerant and water in the evaporator 20 is small, the proportion of water (liquid phase) in the evaporator 20 increases. As a result, the water level W2 rises, resulting in a decrease in the amount of steam generated. On the other hand, if the flow rate of water supplied to the evaporator 20 is small in a state where the amount of heat exchange between the refrigerant and water in the evaporator 20 is large, all the water is evaporated in the evaporator 20 and is generated as a result. The amount of steam is not sufficient. On the other hand, even if the amount of heat exchange between the refrigerant and water in the evaporator 20 is large, if the flow rate of the water supplied to the evaporator 20 becomes excessively large, not all the water becomes steam and the mixed phase It will be supplied to the upper pipe 22 as it is.

  Therefore, in the steam generation device 10, as described above, the height position of the evaporator 20 is disposed below the gas-liquid separator 16 to form the water level difference W. Thereby, if the rotation speed of the water pump 28 is appropriately controlled to change the amount of water supplied from the water supply pipe 26 to the gas-liquid separator 16 and change the water level W1 in the gas-liquid separator 16, the water level difference W Can be used to change and control the flow rate of the water circulated from the lower pipe 24 to the evaporator 20 to maximize the efficiency of steam generation in the evaporator 20.

  In order to perform this control, the controller 15 includes a heat exchange amount between water and the refrigerant in the evaporator 20 and a water level W1 at which the steam generation efficiency is maximized at the heat exchange amount (that is, the evaporator 15). Data of the correlation with the flow rate of water supplied to 20) is obtained through experiments or the like and stored in advance. The data may be, for example, tabular data as shown in FIG. Thereby, the controller 15 calls the data of the water level W1 that maximizes the steam generation efficiency at the heat exchange amount based on the current heat exchange amount in the evaporator 20, and the water level is set so that the water level W1 is reached. The rotational speed of the pump 28 is controlled to change the amount of water supplied to the gas-liquid separator 16.

  More specifically, the correlation data between the heat exchange amount and the water level W1 is obtained when the heat exchange amount increases, the water level W1 in the gas-liquid separator 16 increases, and the heat exchange amount decreases. The content is that the water level W1 in the gas-liquid separator 16 is lowered. In other words, when the heat exchange amount increases from a predetermined value, the water level W1 in the gas-liquid separator 16 is set higher than the predetermined water level, and when the heat exchange amount decreases from the predetermined value, The content of making the water level W1 in the liquid separator 16 lower than a predetermined water level may be sufficient.

  When the heat exchange amount in the evaporator 20 increases, the water level W1 in the gas-liquid separator 16 is increased to increase the amount of water supplied to the evaporator 20 so that the mixed phase is properly adjusted in the evaporator 20. While maintaining the amount, the generation of steam is promoted to maximize the efficiency and amount of steam generation. On the other hand, when the amount of heat exchange in the evaporator 20 decreases, the water level W1 in the gas-liquid separator 16 is lowered to reduce the amount of water supplied to the evaporator 20 and excessively increase the evaporator 20. Water is prevented from being supplied, and steam generation is promoted while maintaining a proper amount of the mixed phase to maximize steam generation efficiency and generation amount.

  As a specific parameter of the amount of heat exchange between the water and the refrigerant in the evaporator 20 which is an index for controlling the water level W1, for example, an input heat quantity Q from the refrigerant to the evaporator 20 is used. If the input heat quantity Q from the refrigerant is obtained, the optimum water supply flow rate to the evaporator 20 at this input heat quantity Q is determined, so the water pump 28 is controlled so that the water level W1 at which this supply flow rate is obtained. become. The input heat quantity Q is determined, for example, by measuring the suction pressure P, the suction temperature T, and the rotation speed rpm at the compressor 40 of the refrigerant cycle device 14 (see FIG. 1). Since it is known, the controller 15 can calculate the refrigerant circulation amount to the evaporator 20 and can estimate it from the refrigerant circulation amount.

  The data of the correlation between the input heat quantity Q and the water level W1 stored in the controller 15 is, for example, as shown in FIG. 3, when the input heat quantity Q is 30 kW, the water level W1 is set to the highest level 3 in three stages, When the input heat quantity Q is 20 kW, the water level W1 is set to an intermediate level 2 in three stages, and when it is 15 kW, the water level W1 is set to the lowest level 1 in three stages. Levels 1 to 3 of the water level W1 are set such that, for example, when the height of the gas-liquid separator 16 is 100%, level 3 is 37%, level 2 is 24%, and level 1 is 10%. The Based on this correlation data, the controller 15 controls the rotation speed of the water pump 28 so that the water level W1 in the gas-liquid separator 16 becomes a desired level 1 to 3 in accordance with the input heat quantity Q at that time. Will do.

  In addition, as a specific parameter of the heat exchange amount between the water and the refrigerant in the evaporator 20 serving as an index for controlling the water level W1, instead of the input heat quantity Q, the flow rate of the steam sent out from the steam delivery pipe 30 F may be used. The flow rate F can be measured, for example, by installing a flow meter (FC) 34 in the steam delivery pipe 30 (see the flow meter 34 indicated by a two-dot chain line in FIG. 2).

  If the flow rate F of the steam sent out from the steam delivery pipe 30 is obtained, the water level W1 in the gas-liquid separator 16 is controlled so that the flow rate F and the flow rate of the water circulated and supplied to the evaporator 20 are matched. That's fine. In this case, when the flow rate F of the steam increases based on the correlation data between the flow rate F and the water level W1, the controller 15 performs control to increase the water level W1 to increase the amount of water that is circulated. When the flow rate F decreases, control is performed to lower the water level W1, to prevent excessive water from being supplied to the evaporator 20, and to maintain the mixed phase at an appropriate amount.

  As described above, in the steam generation device 10 and the steam generation heat pump 12 according to the present embodiment, the connection port 20b serving as the steam outlet in the evaporator 20 has the water surface stored in the gas-liquid separator 16 and the water surface. The positional relationship in the height direction between the evaporator 20 and the gas-liquid separator 16 is defined so as to be lower than the water level W1.

  Thus, by providing a height difference between the evaporator 20 and the gas-liquid separator 16, the gas-liquid separator 16 can be changed to the evaporator 20 only by changing the water level W <b> 1 in the gas-liquid separator 16. And the flow rate of the water circulated through the lower pipe 24 can be changed. As a result, even when the load (heat exchange amount) in the evaporator 20 changes, the heat exchange efficiency in the evaporator 20 is optimally controlled to improve the steam generation efficiency, and the amount of steam generated is also increased. In addition, the evaporator 20 can be downsized. Moreover, since the steam generation apparatus 10 does not require a circulation pump for changing the flow rate of water to the evaporator 20 as in the above-described prior art, the apparatus can be made small and simple, and the cost can be reduced. it can.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be freely changed without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 Steam generation apparatus 12 Steam generation heat pump 14 Refrigerant cycle apparatus 15 Controller 20 Evaporator 22 Upper piping 24 Lower piping 26 Water supply piping 28 Water pump 30 Steam delivery piping 32 Water level sensor 34 Flow meter 40 Compressor 42 Refrigerant condenser 44 Expansion valve 46 Refrigerant evaporator

A steam generator according to the present invention includes a gas-liquid separator that stores water and an evaporator through which a refrigerant flows, and the upper and lower parts of the gas-liquid separator and the evaporator are an upper pipe and a lower pipe, respectively. By communicating, the water in the gas-liquid separator is supplied to the evaporator through the lower pipe and evaporated by heat exchange with the refrigerant, and the vapor generated in the evaporator is vaporized through the upper pipe. A steam generation device that forms a thermosiphon circuit that is supplied to the liquid separator and that is sent out from the gas-liquid separator, wherein the thermosiphon circuit has an outlet of the vapor in the evaporator. A water supply pipe for supplying water to the thermosiphon circuit in the lower pipe or the gas-liquid separator is defined such that the positional relationship in the height direction is defined to be lower than the water surface of the water stored in Is connected Based on the amount of heat exchange between water and refrigerant in the evaporator, the amount of water supplied from the water supply pipe is changed, and the water level in the gas-liquid separator is controlled to a set value corresponding to the amount of heat exchange characterized in that it.

The steam generation heat pump according to the present invention includes a gas-liquid separator that stores water and an evaporator through which a refrigerant flows, and the upper and lower portions of the gas-liquid separator and the evaporator are respectively connected to an upper pipe. By communicating with the lower pipe, the water in the gas-liquid separator is supplied to the evaporator through the lower pipe and evaporated by heat exchange with the refrigerant, and the vapor generated by the evaporator is passed through the upper pipe. A steam generator that forms a thermosiphon circuit that is supplied to the gas-liquid separator through the gas-liquid separator and is sent out from the gas-liquid separator, a compressor, a refrigerant condenser connected to the discharge side of the compressor, and the refrigerant A steam generation heat pump comprising: an expansion valve connected to an outlet side of the condenser; a refrigerant evaporator connected to an outlet side of the expansion valve; and a refrigerant cycle device for circulating the refrigerant, As the evaporator, the cold Using refrigerant condenser cycle apparatus, the outlet of the steam in the evaporator, the positional relationship in the height direction so that the lower position than the water surface of water stored in the gas-liquid separator is defined, A water supply pipe for supplying water to the thermosiphon circuit is connected to the lower pipe or the gas-liquid separator, and based on the amount of heat exchange between water and refrigerant in the evaporator, The water supply amount from the water supply pipe is changed, and the water level in the gas-liquid separator is controlled to a set value corresponding to the heat exchange amount .

Claims (5)

A gas-liquid separator comprising a gas-liquid separator for storing water and an evaporator through which a refrigerant circulates, and an upper pipe and a lower pipe communicating with the gas-liquid separator and the upper and lower parts, respectively. The water inside is supplied to the evaporator through the lower pipe and evaporated by heat exchange with the refrigerant, and the vapor generated by the evaporator is supplied to the gas-liquid separator through the upper pipe, and A steam generator that forms a thermosiphon circuit that is sent out from a gas-liquid separator,
The positional relationship in the height direction of the evaporator and the gas-liquid separator is defined so that the outlet of the vapor in the evaporator is positioned lower than the water level of the water stored in the gas-liquid separator. A steam generator characterized by the above. The steam generator according to claim 1, wherein
A water supply pipe for supplying water to the inside is connected to the lower pipe or the gas-liquid separator,
A steam generating device characterized in that, based on a heat exchange amount between water and refrigerant in the evaporator, a water supply amount from the water supply pipe is changed to control a water level in the gas-liquid separator. The steam generator according to claim 2, wherein
The steam generation apparatus characterized by using an amount of heat input from the refrigerant to the evaporator as the amount of heat exchange. The steam generator according to claim 2, wherein
The steam generation apparatus characterized by using a flow rate of steam sent out from the gas-liquid separator as the heat exchange amount. A gas-liquid separator that stores water and an evaporator through which a refrigerant flows, and the upper and lower parts of the gas-liquid separator and the evaporator communicate with each other by an upper pipe and a lower pipe, respectively. While supplying water in the vessel to the evaporator through the lower pipe and evaporating by heat exchange with the refrigerant, supplying the vapor generated in the evaporator to the gas-liquid separator through the upper pipe, A steam generator that forms a thermosiphon circuit that is fed from the gas-liquid separator;
A compressor, a refrigerant condenser connected to the discharge side of the compressor, an expansion valve connected to the outlet side of the refrigerant condenser, and a refrigerant evaporator connected to the outlet side of the expansion valve. And a refrigerant cycle device for circulating the refrigerant;
A steam generating heat pump comprising:
Using the refrigerant condenser of the refrigerant cycle device as the evaporator,
The positional relationship in the height direction of the evaporator and the gas-liquid separator is defined so that the outlet of the vapor in the evaporator is positioned lower than the water level of the water stored in the gas-liquid separator. A steam generation heat pump characterized by that.

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