JP2020079690A - Thermo-hygrostat and humidified air supply device - Google Patents

Abstract

To provide a thermo-hygrostat capable of reliably preventing steam leakage from a steam humidifier.SOLUTION: A thermo-hygrostat includes an inner tank formed with a space where temperature and humidity are controlled, an air blower for generating an air-conditioning air flow in the space, and a steam humidifier for humidifying the air-conditioning air by supply of steam. The steam humidifier includes a container disposed outside the inner tank for storing water for steam generation, a heating part for heating the water in the container to generate steam, and a steam supply pipe provided with an inflow port opened to a space in the container and an outflow port opened to a space on a suction port side of the air blower, which extends from the inflow port to the outflow port. The steam supply pipe is configured so that pressure loss of the steam from the inflow port to the outflow port is equal to or lower than static pressure of the air blower.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a constant temperature and humidity device and a humidified air supply device.

  Conventionally, as described in Patent Document 1, a thermo-hygrostat equipped with a steam humidifier is widely used. In the thermo-hygrostat described in Patent Document 1, the evaporator, the heater, and the blower are arranged inside the frame, and the steam generator is arranged outside the frame. In this constant temperature and humidity chamber, the steam generated in the steam generator is supplied into the frame through the nozzle pipe, so that the air flowing in the frame is humidified.

Japanese Patent Laid-Open No. 2000-14313

  In the thermo-hygrostat described in Patent Document 1, the inside of the steam generator has a positive pressure due to the pressure of the generated steam. Therefore, in order to prevent the steam from leaking from the steam generator, the steam generator needs to have a closed structure using packing or the like. However, it is difficult for the conventional constant temperature and humidity chamber to reliably prevent the steam from leaking from the steam generator because the degree of airtightness of the steam generator may decrease due to deterioration of the packing over time.

  The present invention has been made in view of the above problems, and an object thereof is to provide a constant temperature and constant humidity device and a humidified air supply device that can more reliably prevent steam leakage from a steam humidifier. ..

  In order to solve the above problems, the constant temperature and humidity apparatus according to an aspect of the present invention is an inner tank in which a space in which temperature and humidity are controlled is formed, and a blower that generates a flow of conditioned air in the space, A steam humidifier that humidifies the conditioned air by supplying steam. The steam humidifier is arranged outside the inner tank, stores a water for steam generation, a heating unit for heating the water in the container to generate steam, and an opening in a space in the container. And a steam supply pipe that extends from the inflow port to the outflow port and that is provided with an inflow port and an outflow port that opens to a space on the suction port side of the blower. The steam supply pipe is configured such that the pressure loss of steam from the inflow port to the outflow port is equal to or lower than the static pressure of the blower.

  According to this constant temperature and constant humidity apparatus, since the pressure loss of the steam supply pipe is equal to or lower than the static pressure of the blower, the static pressure (suction pressure) of the blower can reach the inside of the container of the steam humidifier. This makes it possible to suck the steam generated inside the container with the blower and keep the inside of the container at a negative pressure. Therefore, even if the degree of airtightness of the container is lowered, the gas does not flow from the inside to the outside of the container, so that the vapor leakage from the container can be suppressed.

  In the above constant temperature and humidity apparatus, the steam supply pipe may be configured such that a plurality of the outlets are formed.

  According to this configuration, the total area of the outlets where the suction static pressure of the blower acts can be ensured to be wide, so that the vapor can be more effectively sucked out.

  In the constant temperature and humidity device, in the space on the suction port side, a first region that faces the outlet and in which the conditioned air flows, and an upstream side of the first region in the flow direction of the conditioned air. And a second region in which the conditioned air flows toward the first region. A flow passage area of the conditioned air may be narrower in the first region than in the second region.

  According to this configuration, when the conditioned air flows from the second region to the first region, the flow velocity of the conditioned air increases as the flow passage area narrows, and as a result, the pressure of the conditioned air decreases. As a result, the pressure of the conditioned air in the vicinity of the outflow port can be lowered, so that it is possible to utilize the suction static pressure of the blower to make it easier to suck out the vapor.

  The constant temperature and constant humidity apparatus may further include a Venturi tube provided at the outlet. The first region may be an inner region of a portion of the Venturi pipe having a relatively small pipe cross-sectional area. The second region may be an inner region of a portion of the venturi pipe having a relatively large pipe cross-sectional area.

  According to this configuration, by providing the venturi pipe at the outlet of the steam supply pipe, the flow passage area of the conditioned air flowing near the outlet is reduced, and the pressure of the conditioned air near the outlet is easily reduced. You can

  The constant temperature and constant humidity apparatus may further include a baffle located upstream of the outlet in the flow direction of the conditioned air and arranged so that the flow of the conditioned air may collide. A region downstream of the baffle plate in the flow direction of the conditioned air may be the first region. A region upstream of the baffle plate in the flow direction of the conditioned air may be the second region.

  According to this configuration, by disposing the baffle plate on the upstream side of the outlet of the steam supply pipe, the flow passage area of the conditioned air flowing near the outlet is reduced, and the pressure of the conditioned air near the outlet is reduced. Can be easily lowered.

  In the above constant temperature and humidity apparatus, the steam supply pipe may be arranged such that the outflow port faces the suction port side of the blower.

  According to this configuration, since the suction static pressure of the blower that acts on the outlet of the steam supply pipe can be further increased, it becomes easier to suck the steam.

  In the above constant temperature and humidity apparatus, the steam supply pipe may be arranged such that the outflow port is located below the suction port of the blower.

  According to this configuration, when the steam flowing out from the steam supply pipe is condensed, it is possible to prevent the condensed water from being scattered to the suction port side of the blower. Thereby, even when the thermo-hygrostat is operated under low temperature conditions of, for example, 0° C. or lower, it is possible to prevent the frozen water from adversely affecting the operation of the blower.

  In order to solve the above problems, a humidified air supply device according to another aspect of the present invention includes a blower that generates a flow of air in a space to which steam is supplied, and a steam humidifier that humidifies the air by supplying the steam. And are equipped with. The steam humidifier is disposed outside the space, stores a water for steam generation, a heating unit that heats the water in the container to generate steam, and opens to a space inside the container. An inflow port and an outflow port that opens to the space on the suction port side of the blower are provided, and a steam supply pipe that extends from the inflow port to the outflow port is included. The steam supply pipe is configured such that the pressure loss of steam from the inflow port to the outflow port is equal to or lower than the static pressure of the blower.

  As is clear from the above description, according to the present invention, it is possible to provide a constant temperature and constant humidity device and a humidified air supply device that can more reliably prevent steam leakage from the steam humidifier.

It is a perspective view which shows typically the structure of the constant temperature and humidity apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows typically the cross section of the constant temperature and constant humidity apparatus along line segment II-II in FIG. It is a schematic diagram which expands and shows the structure of the constant temperature and humidity apparatus in the area|region III in FIG. It is a figure which shows typically the structure when the floor surface of an inner tank is planarly viewed in the constant temperature and humidity apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows typically the structure of the Venturi tube vicinity in the constant temperature and humidity apparatus which concerns on Embodiment 2 of this invention. It is a figure which shows typically the structure when the floor surface of the inner tank is planarly viewed in the constant temperature and humidity apparatus which concerns on Embodiment 2 of this invention. It is a figure which shows typically the structure of the baffle plate vicinity in the constant temperature and humidity apparatus which concerns on Embodiment 3 of this invention. It is a figure which shows typically the structure when the floor surface of an inner tank is planarly viewed in the constant temperature and humidity apparatus which concerns on Embodiment 3 of this invention. It is a figure which shows typically the structure of the steam supply pipe vicinity in the constant temperature and humidity apparatus which concerns on Embodiment 4 of this invention.

  Hereinafter, a thermo-hygrostat according to an embodiment of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
First, the configuration of the constant temperature and humidity chamber 1 (constant temperature and humidity device) according to the first embodiment of the present invention will be described with reference to FIGS. The thermo-hygrostat 1 according to the present embodiment is an aging chamber that stores the food 100 for a certain period in the aging chamber S1 (space) where the temperature and humidity are controlled. As shown in FIGS. 1 and 2, the constant temperature and humidity chamber 1 mainly includes an inner tank 10, an air conditioning unit 20, a steam humidifier 30, and a blower 40.

  1 and 2 show only the main constituent elements of the constant temperature and humidity chamber 1, and the constant temperature and humidity chamber 1 may include other constituent elements not shown in both figures. Hereinafter, each component of the thermo-hygrostat 1 will be described in detail. Further, in the following description, the "vertical direction", "front-back direction" and "left-right direction" of the thermo-hygrostat 1 are based on the directions shown in FIG.

  The inner tank 10 is, for example, a chamber having a rectangular parallelepiped shape constituted by a heat insulating wall, and a aging chamber S1 in which the food 100 is stored and an air conditioning chamber S2 adjacent to the aging chamber S1 are formed inside. There is. The aging chamber S1 is a space whose temperature and humidity are controlled so as to be suitable for the aging conditions of the food 100. In the case of dry aging meat, the temperature and humidity in the aging chamber S1 are controlled to 0° C. and 90% (relative humidity), for example. The air conditioning unit 20 and the blower 40 are arranged in the air conditioning room S2. As shown in FIG. 1 and FIG. 2, the aging chamber S1 is provided above the air conditioning chamber S2 and is partitioned from the air conditioning chamber S2 by a partition portion 11 made of a horizontal plate. The shape of the inner tank 10 is not limited to the rectangular parallelepiped shape shown in FIG.

  As shown in FIG. 2, an air outlet 11A for the conditioned air A1 is formed between one end (the left end) of the partition 11 and one inner surface of the inner tub 10 (the inner surface on the left side). .. A suction port 11B for the conditioned air A1 is formed between the other end portion (right end portion) of the partition portion 11 and the other inner side surface (inner side surface on the right side) of the inner tub 10. The blower outlet 11A and the suction inlet 11B are formed so as to be separated from each other in the left-right direction with the partition portion 11 in between and to be located on the same plane, and are formed over the entire front-rear direction of the inner tank 10. (Fig. 1). The outlet 11A and the inlet 11B are not limited to being formed over the entire front-rear direction, and may be formed only in a part in the front-rear direction, or a plurality of them may be formed. ..

  As shown in FIGS. 1 and 2, the conditioned air A1 is blown into the aging chamber S1 from the air outlet 11A after the temperature and humidity are adjusted in the air conditioning chamber S2. The conditioned air A1 blown into the aging chamber S1 rises along one inner side surface of the inner tub 10 and flows from left to right along the top surface of the inner tub 10 to the inside of the other inner tub 10. After descending along the side surface, the air is sucked into the air conditioning room S2 from the suction port 11B. In this way, the conditioned air A1 circulates between the aging chamber S1 and the air conditioning chamber S2.

  The air conditioning unit 20 is for adjusting the temperature of the conditioned air A1 to a temperature (for example, 0° C.) suitable for aging the food 100. As shown in FIG. 2, the air conditioning unit 20 includes a heater 21 that heats the conditioned air A1 and a cooler 22 that cools the conditioned air A1. The heater 21 and the cooler 22 are respectively arranged in the air conditioning room S2, and the cooler 22 is located downstream of the heater 21 in the flow direction of the conditioned air A1 (direction from right to left in FIG. 2). positioned. The cooler 22 may be located upstream of the heater 21.

  The heater 21 is, for example, a sheath heater, and is arranged near the suction port 11B. As shown in FIG. 2, the heater 21 is arranged in a plurality of upper and lower stages (two stages in this embodiment).

  The cooler 22 corresponds to an evaporator which is a component of a refrigerator (not shown). Specifically, the refrigerator includes a refrigerant circuit in which a refrigerant circulates, and an evaporator (cooler 22), a condenser, a compressor, and an expansion mechanism arranged in the refrigerant circuit. The conditioned air A1 can be cooled by radiating heat from the conditioned air A1 to the refrigerant in the cooler 22.

  As shown in FIG. 2, the cooler 22 is divided into a plurality of upper and lower stages (two stages in the present embodiment) like the heater 21, and a horizontal partition plate 23 is provided between the both coolers 22. Are arranged. It should be noted that the heater 21 and the cooler 22 are not limited to the case of being arranged in a plurality of stages, and may be arranged in a single stage. Further, the cooler 22 may be arranged in a single stage or in a plurality of stages, regardless of whether it is arranged in a single stage or a plurality of stages.

  The steam humidifier 30 is for humidifying the conditioned air A1 by supplying steam, and is arranged on the downstream side of the cooler 22. As shown in FIG. 2, the steam humidifier 30 includes a container 31 that stores water W1 for generating steam, a heating unit 32 that heats the water W1 in the container 31 to generate steam, and the inside of the container 31. And a steam supply pipe 33 that guides the steam generated in 1) into the air conditioning room S2.

  The constant temperature and humidity chamber 1 according to the present embodiment is of a humidification type in which a steam humidifier 30 is mounted. The detailed configuration of the steam humidifier 30 will be described later.

  The blower 40 generates a flow of the conditioned air A1 in the aging chamber S1 and the air conditioning chamber S2, and is arranged downstream of the steam supply pipe 33. The blower 40 is, for example, a sirocco fan, and is provided with a suction port 41 facing upward and a blowout port 42 facing leftward. The blower 40 is arranged with its rotation axis extending in the vertical direction, and is rotationally driven by a motor arranged outside the air conditioning chamber S2. In the present embodiment, the blower 40 and the steam humidifier 30 constitute a humidified air supply device that supplies the conditioned air A1 whose humidity is adjusted to the aging chamber S1. The blower 40 is not limited to a sirocco fan, and another type of blower can be used.

  As shown in FIG. 2, the blower 40 is housed in the casing 43. The casing 43 is a rectangular parallelepiped box installed on the floor 12 of the inner tub 10, and has openings at portions facing the suction port 41 and the blowout port 42 of the blower 40.

  A temperature detection unit 51 and a humidity detection unit 52 are arranged downstream of the air outlet 42 of the blower 40. The temperature and humidity of the conditioned air A1 blown out from the blower 40 are respectively detected by the temperature detection unit 51 and the humidity detection unit 52, and the information on the detection results is input to the control unit 50 (computer). Then, the control unit 50 controls the operations of the heater 21, the refrigerator, and the steam humidifier 30 (heating unit 32) by feedback control based on the difference between these detection results and the set values of temperature and humidity. The temperature detecting unit 51 and the humidity detecting unit 52 are not limited to being arranged at the positions shown in FIG. 2, and may be arranged at arbitrary positions in the inner tank 10.

  FIG. 3 is an enlarged perspective view of a region III in FIG. As shown in FIG. 3, a plurality of blowers 40 (two blowers in this embodiment) are provided and are arranged side by side in the front-rear direction. The blower 40 is not limited to the case where a plurality of blowers 40 are provided, and only one blower 40 may be provided.

  The container 31 of the steam humidifier 30 has a rectangular parallelepiped shape that is long in the front-rear direction, and is arranged outside the inner tank 10 (the air conditioning chamber S2) (in the machine room of the constant temperature and humidity chamber 1). More specifically, the container 31 includes a container main body 39A having a space in which water W1 for steam generation is stored and opening upward, a lid 39B closing an upper opening of the container main body 39A, and a container main body 39A. And a packing (not shown) such as a silicon sponge that seals a gap between the lid 39B and the cover 39B. That is, the container 31 has a structure that can be sealed by the packing. Further, the lid 39B is formed with a connecting portion 31A to which the vapor supply pipe 33 is connected.

  The heating unit 32 is, for example, a plug heater, and is arranged along the bottom surface of the container body 39A so as to be immersed in the water W1. The heater output of the heating unit 32 is controlled by the control unit 50 so that the detection value by the humidity detection unit 52 becomes a set value (for example, relative humidity 90%). Thereby, the water W1 in the container 31 can be heated to generate steam. Here, the maximum steam generation amount in the container 31 is determined by the heater capacity of the heating unit 32.

  The steam supply pipe 33 has an inflow port 38 opening to the space inside the container 31, and an outflow port 36, 37 opening to the space on the suction port 41 side of the blower 40 (the space between the cooler 22 and the casing 43). Are provided, and the flow path extends from the inflow port 38 to the outflow ports 36, 37.

  More specifically, as shown in FIG. 3, the steam supply pipe 33 extends upward from the container 31, penetrates the bottom wall of the inner tank 10 and reaches the air conditioning chamber S2, and the first pipe portion 34 The second pipe portion 35 is located at the upper end of the pipe portion 34 and extends in the front-rear direction so as to be orthogonal to the first pipe portion 34. The steam supply pipe 33 in the present embodiment is a T-shaped pipe configured by connecting the upper end of the first pipe portion 34 to the center of the second pipe portion 35 in the length direction. The second pipe portion 35 is located above the floor surface 12 of the inner tank 10 and has a gap with the floor surface 12. The steam supply pipe 33 is, for example, a stainless pipe, but the material is not particularly limited. A flexible pipe may be used as the steam supply pipe 33. The steam supply pipe 33 may be composed of one member or may be composed of a plurality of members.

  The lower end of the first pipe portion 34 is inserted or connected to the connection portion 31A formed on the lid 39B, and opens into the space inside the container 31. The lower end of the first pipe portion 34 serves as an inflow port 38. Further, as shown in FIG. 3, both ends in the longitudinal direction of the second pipe portion 35 are outlets 36 and 37, respectively. That is, the steam supply pipe 33 in the present embodiment is branched in the air conditioning chamber S2 so that a plurality (two) of outlets 36 and 37 are formed. Therefore, the vapor generated in the container 31 rises in the first pipe portion 34, and then splits at the connecting portion between the first pipe portion 34 and the second pipe portion 35, and then the two outlets 36, It flows out from each of 37 into the air conditioning room S2.

  FIG. 4 shows the configuration when the floor surface 12 of the inner tank 10 is viewed in plan. As shown in FIG. 4, the center P1 of the suction port 41 of the front blower 40 is located on a straight line (one-dot chain line in FIG. 4) extending along the opening surface of the front outlet 37, and the rear flow The center P2 of the suction port 41 of the rear blower 40 is located on a straight line (one-dot chain line in FIG. 4) extending along the opening surface of the outlet 36. That is, in this embodiment, the outlets 36 and 37 of the steam supply pipe 33 are located at the positions corresponding to the two blowers 40, respectively.

  Further, as shown in FIG. 4, the second pipe portion 35 extends perpendicularly to the flow direction of the conditioned air A1, and the opening surfaces of the outlets 36 and 37 are parallel to the flow direction. There is. As a result, the dynamic pressure due to the flow of the conditioned air A1 does not act on the outlets 36, 37, and only the suction static pressure by the blower 40 can act.

  Further, as shown in FIG. 2, the outlet 37 of the steam supply pipe 33 is located above the floor 12 and below the suction port 41 of the blower 40. More specifically, the outflow port 37 is located on the extension line (broken line in FIG. 2) of the partition plate 23 and at a position where the conditioned air A1 that has passed through both the upper and lower coolers 22 passes. Thereby, it is possible to prevent the liquid accumulated on the floor surface 12 of the inner tank 10 from entering the steam supply pipe 33 from the outlet 37, and even when the steam flowing out from the outlet 37 is condensed in the air conditioning room S2. It is possible to prevent the condensed water from scattering to the suction port 41 side of the blower 40. Although only the front outlet 37 is shown in FIG. 2, the rear outlet 36 is also located at the same height as the front outlet 37.

  The steam supply pipe 33 is configured so that the pressure loss of steam from the inflow port 38 to each of the outflow ports 36 and 37 is equal to or less than the static pressure of the blower 40. The pressure loss is determined based on the flow rate of steam in the steam supply pipe 33. The flow rate of the steam is determined by the cross-sectional area of the steam supply pipe 33 and the maximum steam generation amount in the container 31, and the maximum steam generation amount is determined by the heater capacity of the heating unit 32 as described above.

  In the conventional steam humidifier in the constant temperature and constant humidity chamber, the internal pressure of the container is increased by the generation of steam, and the steam is allowed to flow into the pipe.

  On the other hand, as a result of earnest research, the present inventor paid attention to making the inside of the container 31 of the steam humidifier 30 negative pressure by utilizing the suction static pressure of the blower 40, and in order to achieve this, It was conceived that the pressure loss of the supply pipe 33 should be equal to or lower than the static pressure of the blower 40. This makes it possible to apply the suction static pressure of the blower 40 to the inside of the container 31 and keep the inside of the container 31 at a negative pressure, and even when the sealing degree of the container 31 is lowered due to deterioration of the packing over time, It is possible to prevent vapor leakage from the container 31 into the machine room.

(Embodiment 2)
Next, a thermo-hygrostat according to Embodiment 2 of the present invention will be described with reference to FIGS. 5 and 6. The constant temperature and humidity chamber according to the second embodiment basically has the same configuration as the constant temperature and humidity chamber 1 according to the first embodiment and has the same effect, but by utilizing the Venturi effect, steam It is different from the constant temperature and humidity chamber 1 according to the first embodiment in that it is easy to suck out the vapor from the outlets 36 and 37 of the supply pipe 33. Only the points different from the thermo-hygrostat 1 according to the first embodiment will be described below.

  FIG. 5 is an enlarged perspective view showing the vicinity of the floor surface 12 of the thermo-hygrostat according to the second embodiment. FIG. 6 is a plan view of the floor surface 12 in substantially the same region as FIG. As shown in FIGS. 5 and 6, in the space on the suction port 41 side of the blower 40 (the space on the upstream side of the suction port 41), the conditioned air A1 flows in a region facing the outlets 36 and 37. A first region R1 and a second region R2 that is a region upstream of the first region R1 in the flow direction of the conditioned air A1 and in which the conditioned air A1 flows toward the first region R1 are provided, respectively. There is. The first region R1 has a smaller flow passage area for the conditioned air A1 than the second region R2.

  More specifically, the thermo-hygrostat according to the second embodiment includes two venturi tubes 61 and 62 provided at the outlets 36 and 37, respectively. As shown in FIGS. 5 and 6, the Venturi pipes 61 and 62 are arranged so as to be parallel to the flow direction of the conditioned air A1 and orthogonal to the second pipe portion 35.

  The venturi pipes 61, 62 are open at the upstream and downstream ends in the flow direction of the conditioned air A1, respectively, and the pipe cross-sectional area is relatively small with the small diameter portions 61A, 62A having a relatively small pipe cross-sectional area. And large-diameter portions 61B and 62B having a large diameter. The small diameter portions 61A and 62A have a hollow cylindrical shape parallel to the flow direction of the conditioned air A1 and are provided at both ends of the second pipe portion 35, respectively. The large diameter portions 61B and 62B have taper portions that reduce in diameter toward the small diameter portions 61A and 62A, and are connected to the upstream ends of the small diameter portions 61A and 62A. The second pipe portion 35, the small diameter portions 61A and 62A, and the large diameter portions 61B and 62B communicate with each other. The inner region of the small diameter portions 61A and 62A is the first region R1, and the inner region of the large diameter portions 61B and 62B is the second region R2.

  As shown in FIG. 6, when the conditioned air A1 flows from the second region R2 to the first region R1, the flow velocity of the conditioned air A1 increases as the flow passage area narrows. Since the pressure of the conditioned air A1 decreases as the flow velocity increases, the pressure of the conditioned air A1 near the outlets 36 and 37 can be decreased. As a result, the suction static pressure of the blower 40 acting on the outlets 36, 37 can be increased, and the effect of sucking steam from the outlets 36, 37 can be further improved.

(Embodiment 3)
Next, a thermo-hygrostat according to Embodiment 3 of the present invention will be described with reference to FIGS. 7 and 8. The constant temperature and humidity chamber according to the third embodiment basically has the same configuration as the constant temperature and humidity chamber 1 according to the first embodiment and has the same effect, but the baffle plate 80 is the floor of the inner tank 10. It is different from the thermo-hygrostat 1 according to the first embodiment in that it is provided on the surface 12. Only the points different from the thermo-hygrostat 1 according to the first embodiment will be described below.

  FIG. 7 is an enlarged perspective view showing the vicinity of the floor surface 12 of the thermo-hygrostat according to the third embodiment. FIG. 8 is a plan view of the floor surface 12 in substantially the same region as FIG. 7. As shown in FIGS. 7 and 8, in the space on the suction port 41 side of the blower 40 (the space on the upstream side of the suction port 41), as in the second embodiment, in a region facing the outflow ports 36, 37. There is a first region R1 in which the conditioned air A1 flows, and a second region R2 in which the conditioned air A1 flows toward the first region R1, which is a region upstream of the first region R1 in the flow direction of the conditioned air A1. , Are respectively provided. The first region R1 has a smaller flow passage area for the conditioned air A1 than the second region R2.

  More specifically, the constant temperature and humidity chamber according to the third embodiment is located upstream of the outlets 36 and 37 in the flow direction of the conditioned air A1, and is arranged so that the flows of the conditioned air A1 collide with each other. The baffle plate 80 is provided. As shown in FIG. 7, the baffle plate 80 is located upstream of the second pipe portion 35 of the steam supply pipe 33 in the flow direction of the conditioned air A1 and rises from the floor surface 12 of the inner tank 10. There is. The baffle plate 80 has a shape in which the central portion in the lengthwise direction projects to the upstream side, whereby the conditioned air A1 that collides with the baffle plate 80 is guided to both ends of the baffle plate 80. As shown in FIG. 8, the front end of the baffle plate 80 is located in front of the front outlet 37, and the rear end of the baffle plate 80 is located rearward of the rear outlet 36. In the flow direction of the conditioned air A1, a region downstream of the baffle plate 80, a region in front of the front end of the baffle plate 80, a region in the downstream side of the baffle plate 80, and a region behind the rear end of the baffle plate 80 are formed. Each is the first region R1 and the region upstream of the baffle plate 80 is the second region R2.

  According to the thermo-hygrostat according to the third embodiment, by providing the baffle plate 80, the same effect as when the venturi effect described in the second embodiment is used can be obtained. That is, as shown in FIG. 8, the flow rate of the conditioned air A1 increases as the conditioned air A1 flows from the second region R2 to the first region R1, and the conditioned air A1 in the vicinity of the outlets 36 and 37 is accordingly increased. The pressure can be reduced. As a result, the suction static pressure of the blower 40 acting on the outlets 36, 37 can be increased.

(Embodiment 4)
Next, a thermo-hygrostat according to Embodiment 4 of the present invention will be described with reference to FIG. The constant temperature and humidity chamber according to the fourth embodiment basically has the same configuration as the constant temperature and humidity chamber 1 according to the first embodiment and has the same effect, but the outlet 36 of the steam supply pipe 33, It differs from the constant temperature and humidity chamber 1 according to the first embodiment in that 37 is directed to the suction port 41 side of the blower 40. Only the points different from the thermo-hygrostat 1 according to the first embodiment will be described below.

  FIG. 9 is an enlarged perspective view showing the vicinity of the floor surface 12 of the constant temperature and humidity chamber according to the fourth embodiment. As shown in FIG. 9, the steam supply pipe 33 in the constant temperature and humidity chamber according to the fourth embodiment includes two curved pipe portions 91 and 92 (elbow pipe portion) in addition to the first pipe portion 34 and the second pipe portion 35. ) Is further provided. The curved pipe portions 91, 92 have one opening attached to the end of the second pipe portion 35, and the other opening on the suction port 41 side of the blower 40, that is, on the downstream side in the flow direction of the conditioned air A1. It is facing. The other openings of the curved pipe portions 91, 92 serve as outlets 36, 37. Also in this case, the outlets 36 and 37 and the center of the suction port 41 of the blower 40 are located on the same straight line.

  In the constant temperature and humidity chamber according to the fourth embodiment, by directing the outlets 36, 37 of the steam supply pipe 33 toward the suction inlet 41 side of the blower 40, the suction static pressure of the blower 40 acting on the outlets 36, 37 is reduced. It can be increased. Therefore, it becomes easier to suck the vapor from the outlets 36 and 37.

(Other embodiments)
Here, other embodiments of the present invention will be described.

  The second pipe part 35 may be omitted from the steam supply pipe 33 (FIG. 3) in the above-described embodiment, and the steam supply pipe 33 may be composed of only the first pipe part 34. In this case, since steam flows out from the upper end of the first pipe portion 34 into the air conditioning chamber S2, only one outlet is provided. Further, in this configuration, a plurality of (two) first pipe portions 34 may be provided according to the number of blowers 40.

  In the above embodiment, the case where the two outlets 36 and 37 are provided by branching the steam supply pipe 33 has been described, but the present invention is not limited to this, and the number of branches is further increased to provide three or more outlets. The number of steam suction ports may be increased by.

  In the above embodiment, the number of blowers 40 and the number of steam outlets are the same, but the number of blowers 40 and the number of outlets may not be the same. For example, the configuration may be such that only one outlet is provided for the two blowers 40.

  In the above embodiment, the case where the aging chamber S1 is located above the air conditioning chamber S2 has been described, but the present invention is not limited to this. The air conditioning room S2 may be located above the aging room S1. Also, the aging chamber S1 and the air conditioning chamber S2 are not limited to being vertically partitioned from each other, and the aging chamber S1 and the air conditioning chamber S2 may be partitioned from each other in the front-rear direction, or may be partitioned from each other in the left-right direction. May be. Further, the outlet 11A and the inlet 11B are not limited to the case where they are formed so as to be separated from each other in the left-right direction as shown in FIG. 1, and may be formed so as to be separated from each other in the front-rear direction.

  In the above embodiment, as described with reference to FIGS. 1 and 2, the case where the flow of the conditioned air A1 along the inner surface of the inner tub 10 is generated has been described, but the present invention is not limited to this. For example, the flow of the conditioned air A1 may be generated also in the area where the food 100 is stored in the space inside the inner tank 10.

  In the above embodiment, the case where only one steam humidifier 30 is provided has been described, but a plurality of steam humidifiers 30 may be provided.

  In the above embodiment, the case where the outlets 36 and 37 are located below the suction port 41 of the blower 40 has been described, but the present invention is not limited to this, and may be located above the suction port 41. , And may be located at the same height as the suction port 41.

  In the above embodiment, the aging chamber has been described as an example of the constant temperature and humidity apparatus, but the constant temperature and humidity apparatus of the present invention is not limited to this. For example, the present invention can be applied to an environment tester or a stability tester that adjusts humidity. In this case, the test chamber containing the sample corresponds to the space of the inner tank in which the temperature and humidity are controlled. It can also be applied to large-sized constant temperature and humidity chambers such as environmental test equipment and stability test chambers.

  In the above embodiment, as an example of the constant temperature and constant humidity apparatus, the apparatus in which the inner tank whose temperature and humidity are controlled and the air conditioning unit are integrated has been described, but the inner tank and the air conditioning unit may be separate bodies.

  It should be understood that the embodiments disclosed this time are illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and is intended to include meanings equivalent to the claims and all modifications within the scope.

1 Constant temperature and humidity chamber (constant temperature and humidity device)
10 Inner Tank 30 Steam Humidifier 31 Container 32 Heating Part 33 Steam Supply Pipe 36,37 Outlet 38 Inlet 40 Blower 41 Suction 61,62 Venturi 61A, 62A Small Diameter 61B, 62B Large Diameter 80 Baffle Plate A1 Air Conditioning Air R1 1st area R2 2nd area S1 Aging room (space)
W1 water

Claims (8)

An inner tank in which a space whose temperature and humidity are controlled is formed,
A blower for generating a flow of conditioned air in the space,
A steam humidifier for humidifying the conditioned air by supplying steam,
The steam humidifier is
A container that is arranged outside the inner tank and stores water for steam generation,
A heating unit that heats water in the container to generate steam,
An inlet opening to the space inside the container, and an outlet opening to the space on the inlet side of the blower are provided, and a steam supply pipe extending from the inlet to the outlet,
The constant temperature and humidity device, wherein the steam supply pipe is configured so that the pressure loss of the steam from the inlet to the outlet is equal to or less than the static pressure of the blower.   The constant temperature and humidity device according to claim 1, wherein the steam supply pipe is configured so that a plurality of the outlets are formed. In the space on the suction port side,
A first region that faces the outlet and in which the conditioned air flows,
A region upstream of the first region in the flow direction of the conditioned air, and a second region in which the conditioned air flows toward the first region, and
The constant temperature and humidity device according to claim 1 or 2, wherein a flow passage area of the conditioned air in the first region is narrower than that in the second region. Further comprising a Venturi tube provided at the outlet,
The inner region of the portion of the Venturi pipe having a relatively small pipe cross-sectional area is the first region,
The constant temperature and humidity device according to claim 3, wherein an inner region of a portion of the venturi pipe having a relatively large pipe cross-sectional area is the second region. Further comprising a baffle located upstream of the outlet in the flow direction of the conditioned air and arranged so that the flow of the conditioned air collides,
A region on the downstream side of the baffle plate in the flow direction of the conditioned air is the first region,
The constant temperature and humidity device according to claim 3, wherein a region on the upstream side of the baffle plate in the flow direction of the conditioned air is the second region.   The constant temperature and humidity device according to any one of claims 1 to 5, wherein the steam supply pipe is arranged such that the outflow port faces the suction port side of the blower.   The constant temperature and humidity device according to any one of claims 1 to 6, wherein the steam supply pipe is arranged such that the outlet port is located below the suction port of the blower. A blower that generates a flow of air in the space where steam is supplied,
A steam humidifier for humidifying the air by supplying steam,
The steam humidifier is
A container that is arranged outside the space and stores water for steam generation,
A heating unit that heats water in the container to generate steam,
An inlet opening to a space in the container, and an outlet opening to the space on the suction inlet side of the blower are provided, and a steam supply pipe extending from the inlet to the outlet,
The humidified air supply device, wherein the steam supply pipe is configured such that the pressure loss of steam from the inlet to the outlet is equal to or less than the static pressure of the blower.

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