JP2018169139A - Heat exchanger filter device and poultry house ventilation system using the same - Google Patents

Abstract

When building a ventilation system using a heat exchanger in a dusty place such as a poultry house, an air path in the heat exchanger is clogged. A heat exchanger filter device for exchanging heat between outside air outside a wall partitioning the inside and outside and inside air inside the filter, the filter, a filter side connection port connected to the filter, and the heat exchange A heat exchanger filter device having a suction chamber having a heat exchanger side connection port connected to an inside air suction port of the vessel, dust removing means for removing dust from the filter, and a scattering prevention cover capable of covering the filter By mounting on the heat exchanger, clogging of the heat exchanger is reduced, and the cleaning or replacement interval can be lengthened. [Selection] Figure 2

Description

  The present invention relates to a filter device for a heat exchanger used in a poultry house or the like for breeding broilers.

  In broilers, the environmental conditions, especially during the younger days, determine the size of the final growth. Therefore, it is necessary to manage the environment such as the temperature inside the poultry house according to the number of breeding days. For example, when the temperature outside the poultry house is lower than the temperature required for the broiler of the day, the temperature inside the poultry house must be maintained at a predetermined temperature by a heater such as a gas broiler.

  On the other hand, even in the cold season when the outside air temperature is low, in order to improve the air quality in the poultry house, it is necessary to ventilate with the minimum air volume according to the age. Here, the air quality refers to the concentration of each component in the air such as oxygen concentration, carbon dioxide concentration, carbon monoxide concentration, ammonia concentration, dust concentration in the air.

  There are natural ventilation and forced ventilation according to the structure of the poultry house. The poultry house that is the subject of the present invention is a windless poultry house, and conventionally, forced ventilation using a ventilation fan has been performed. Conventional ventilation of a windless poultry house introduces outside air from an air inlet and exhausts the air in the house by a ventilation fan. Therefore, temperature management and ventilation management in the poultry house were performed by operating / stopping the heater and operating / stopping the ventilation fan. In the following, the Windless house will be abbreviated as a house.

  That is, outside air is introduced into the poultry house for ventilation even when the outside air temperature in the cold season is low. However, the temperature inside the poultry house rapidly decreases due to the introduction of cold outside air. Therefore, the ventilation amount is reduced. This causes the air quality in the poultry house to deteriorate.

  On the other hand, in order to prevent the temperature inside the poultry house from dropping even when cold outside air is introduced, the number of brooders must be increased. This is not preferable because initial investment and fuel costs such as gas become high.

  Moreover, if it exhausts with the ventilation fan provided in the wife wall, ventilation wind will arise in the longitudinal direction of a poultry house. Such ventilation air tends to cause differences in temperature and air quality between the windward and leeward. In addition, there is a difference in the wind speed between the longitudinal side of the poultry house and the wall side.

  As a method for solving such problems, a livestock ventilation device using a heat exchanger has been proposed (Patent Document 1). In patent document 1, when one heat exchanger is installed in a barn and outside air is taken in, it is made to heat-exchange with the air in a barn. The outside air heated by heat exchange (temperature lower than the house temperature) is blown out downward by an air supply duct installed in the upper part of the barn.

  Also, in recent years, one large heat exchanger that satisfies the maximum airflow among the minimum airflow depending on the number of breeding days is used, and the outside air taken in is exchanged with the air in the barn, and enters the house from the barn wall. A method of circulating the inside of the building by a blowout fan and a circulation fan is also known.

Japanese Utility Model Publication No. 61-004166

  Since the method of Patent Document 1 uses an air supply duct, a fan driving force in consideration of the pressure loss of the duct is required more than the required air volume. In addition, when the method of Patent Document 1 is applied to a poultry house, the temperature is raised by heat exchange downward through the air supply duct, but still cool air is blown out, so that the broiler chicks that are not molted are also housed. Directly hit the wind at a temperature lower than the internal temperature. This adversely affects the growth of chicks. In particular, when cold air is applied to chicks up to 14 days of age, the weight when grown grows.

  In addition, when the large heat exchanger described above is used, when the ventilation amount is small, the operation is performed by lowering the air flow rate of the supply and exhaust air. You can't get the environment. Furthermore, since the supply / exhaust is made in one place, the breeding zone cannot be partitioned with a vinyl curtain or the like in the building, which is not preferable from the viewpoint of energy saving.

  Therefore, it is conceivable to arrange a large number of small heat exchangers. By the way, the amount of dust in the poultry house is very large. This is due to the main substances of airborne dust such as feathers, litter (mainly sawdust) and bait, which are inevitable for poultry houses. On the other hand, the air path of the heat exchange element in the small heat exchanger is narrow and has a structure that is easily clogged with dust. Therefore, in order to install a small heat exchanger in such an environment with a large amount of dust, it is necessary to arrange a filter device at the inside air suction port.

  However, if the filter is clogged immediately, the replacement frequency becomes high and it takes time and effort. Therefore, there is a need for a filter device that is not easily clogged and that can be easily recovered even if clogged. In addition, this problem is not limited to poultry houses, but can be said for general heat exchangers that are used in dusty environments and have small air paths. This is also true for the built-in heater.

  The present invention has been conceived in view of the above problems, and by disposing a plurality of heat exchangers on the side wall, a duct is not used for air supply, and a blown air is used to grow broiler chicks. A filter device for a heat exchanger that is preferably used in a broiler house that can efficiently provide a uniform thermal environment to a necessary zone in the house without adversely affecting the temperature.

More specifically, the heat exchanger filter device according to the present invention comprises:
A heat exchanger filter device for exchanging heat between outside air and inside air outside a wall partitioning the inside and outside,
Filters,
A suction chamber having a filter side connection port connected to the filter and a heat exchanger side connection port connected to an inside air suction port of the heat exchanger;
Dust removing means for removing dust from the filter;
It has a scattering prevention cover which can cover the filter.

  When many small heat exchangers are arranged in a poultry house, the air exchanger from the inside air suction port of the heat exchanger becomes clogged with dust, so a filter device is required for the heat exchanger. The filter device according to the present invention can easily remove the dust from the filter, and can regenerate and use the filter many times. Furthermore, by exposing the filter, the pressure loss of the suction air on the upstream side of the filter is eliminated, and the desorption work during regular cleaning is facilitated. Further, since the filter uses a cylindrical filter, air is sucked from the entire periphery. Therefore, there is an effect that the filtration area can be maximized with a small installation area.

  Moreover, in the poultry house where the heat exchanger equipped with the filter device according to the present invention is arranged, the heat exchanger distributed in the poultry house is operated according to the difference between the management temperature determined based on the age and the outside air temperature. Since the ventilation system to be controlled can be constructed, it is possible to save energy and adjust the environment in the poultry house according to the growth of the broiler. As a result, efficient broiler growth is possible.

It is a figure which shows the perspective view and top view of a poultry house. It is a figure which shows the structure of a heat exchanger. It is a figure which shows the external appearance of a filter apparatus. It is a figure which shows sectional drawing of a filter apparatus. It is a figure which shows other embodiment (50b) of a filter apparatus. It is a figure which shows other embodiment (50c) of a filter apparatus. It is a figure which shows the structure of a control apparatus. It is a processing flow of the control device. It is a graph which shows the temperature change in the poultry house when temperature management is performed. It is a detailed flow of the process which operates a heat exchanger. It is a figure which shows the example in the case of ventilating for every breeding zone.

  Hereinafter, a filter device for a heat exchanger according to the present invention will be described with reference to the drawings. In addition, although the following description demonstrates the case where it uses for the ventilation system of a poultry house, the filter apparatus for heat exchangers which concerns on this invention is not limited only as an object for poultry houses. Moreover, the following description illustrates one embodiment of the filter device for a heat exchanger according to the present invention, and the configuration of the present invention is not limited to the following description. The following embodiments can be modified without departing from the spirit of the present invention.

  First, the chicken house 1 will be briefly described with reference to FIG. FIG. 1 shows a perspective view (FIG. 1 (a)) and a plan view (FIG. 1 (b)) of a poultry house 1. FIG. The poultry house 1 into which the control device for the ventilation system using the heat exchanger having the filter device is introduced is not particularly limited in shape. However, as a desirable form, a poultry house having a rectangular floor surface 2, side walls 3a, 3b provided along the long sides, end walls 4a, 4b provided along the short sides, and a roof 5 is desirable.

  In the side walls 3a and 3b, the inside of the poultry house 1 is referred to as inner side walls 3ai and 3bi, and the outside of the poultry house 1 is referred to as outer walls 3ao and 3bo. In FIG. 1B, only the inner wall 3ai and the outer wall 3ao are shown. Further, the floor surface 2 can be divided into a plurality of breeding zones Bz. Usually, in order to expand the breeding area according to the age in the poultry house, it is preferable that the area can be divided into a plurality of breeding zones Bz. FIG. 1B shows a case where there are four breeding zones Bz. In addition, the floor surface 2 is laid with bedding (sawdust etc.).

  In the poultry house 1, a heater 10 (also referred to as “broider”) is installed along the center line 2 a of the floor 2. The heater 10 may be placed directly on the floor 2 or may be suspended at a certain height from the ceiling. The interval 10a between the heaters 10 is approximately equal. This is because the heater 10 is placed in order to keep the temperature inside the poultry house 1 constant, and it is desirable that the temperature at an arbitrary position on the floor 2 be constant.

  Therefore, it is desirable that the distance 3L between the side walls 3a and 3b is a distance that allows the effect of the heater 10 to reach the wall when the heater 10 is placed at the center.

  A ventilation fan 12 may be provided on at least one of the wife walls 4a. The other end wall 4b is also provided with a door 13 that can be opened and closed like a ventilation fan 12 or a screen door. Heat exchangers 14 are provided opposite to the opposing side walls 3a and 3b, respectively. In FIG. 1B, 16 heat exchangers 14 are arranged on the side walls 3a and 3b, respectively.

  FIG. 2 shows a simple configuration of the heat exchanger 14. In the following description, the side wall 3a side is described. However, the side wall 3b side is the same. The heat exchanger 14 includes a heat exchange element 14 a, an exhaust system air passage 14 o that exhausts air inside the poultry house 1 to the outside of the poultry house 1, and an air supply system air path 14 i that takes air outside the poultry house 1 into the poultry house 1. Consists of.

  The heat exchanging element 14a brings the air flow path 14o of the exhaust system and the air path 14i of the supply system close to each other, and gives the heat amount of the air of the exhaust system to the air of the supply system (sensible heat exchange), or the humidity of the exhaust system You may give to the air of a supply system (total heat exchange). That is, the heat exchanger 14 performs heat exchange between the outside air outside the partition wall that divides the inside and the outside and the inside air inside the partition wall.

  Most preferably, the heat exchanger 14 incorporates both a sensible heat exchange element and a total heat exchange element as the heat exchange element 14a and can be switched by an instruction from the outside. In addition, the case where it operates with a sensible heat exchange element is called sensible heat operation, and the case where it operates with a total heat exchange element is called total heat operation.

  The exhaust system of the heat exchanger 14 is provided with an inside air suction port 14oi that takes in air inside the poultry house 1 below the inner wall 3ai. Further, an inside air discharge port 14oo that is an outlet of air in the exhaust system is provided in the lower part of the heat exchanger 14.

  A fan 14of is provided in the middle of the exhaust system air passage 14o to generate an air flow from the inside of the poultry house 1 to the outside of the poultry house 1. In the exhaust system, air reaches the heat exchange element 14a from the inside air suction port 14oi through the air passage 14o of the exhaust system, is sent out from the heat exchange element 14a to the inside air discharge port 14oo, and is discharged outside the poultry house 1. In some heat exchange elements 14a, the exhaust system air passage 14o and the air supply system air path 14i intersect each other within the heat exchange element 14a. In this case, the inside air discharge port 14oo is provided at the upper portion of the heat exchanger 14, and the inside air discharge port 14oo is provided at the lower portion of the heat exchanger 14.

  In the air supply system of the heat exchanger 14, an outside air suction port 14 ii for taking in air outside the poultry house 1 is provided at the top of the heat exchanger 14. An outside air outlet 14io, which is an outside air outlet, is provided above the inner wall 3ai. A fan 14if is also provided in the air passage 14i of the air supply system, and generates an air flow from the outside of the chicken house 1 to the inside of the chicken house 1. In the air supply system, air reaches the heat exchange element 14 a from the outside air suction port 14 ii, is sent out from there to the outside air outlet 14 io in the poultry house 1, and is released into the poultry house 1.

  The inside air suction port 14oi of the heat exchanger 14 is set to a predetermined height from the floor surface 2 of the poultry house 1. Further, the filter device 50 according to the present invention is attached to the inside air suction port 14oi. The height from the floor surface 2 of the inside air suction port 14oi is arranged such that the height from the floor surface 2 of the filter 52 of the filter device 50 is at least higher than the height of the young chick. This is to prevent the wind generated when the inside air is sucked from hitting the chicks.

  FIG. 3A shows an enlarged perspective view of the filter device 50 (50a). The filter device 50 includes a filter 52, a suction chamber 54, dust removing means 56, and a scattering prevention cover 58.

  The filter 52 is preferably a pleated (pleated) cylindrical filter. This is because air from the entire circumference can be sucked and the filtration area can be maximized with a small installation area. Note that a filter having a polygonal cross section is not excluded. The material is preferably made of a resin such as polyester that can be washed and disinfected. The shape of the filter 52 is fixed by an upper filter plate 52a and a lower filter plate 52b (see FIG. 3C), and is connected to the suction chamber 54 by the upper filter plate 52a.

  The suction chamber 54 has a heat exchanger side connection port 54a connected to the inside air suction port 14oi (see FIG. 2) of the heat exchanger 14 and a filter side connection port 54b (see also FIG. 4) connected to the filter 52.

  3B and 3C are side views of the filter device 50. FIG. The heat exchanger side connection port 54a of the suction chamber 54 is formed so as to be fitted into the inner wall of the inside air suction port 14oi (see FIG. 2). Also, a flange 54f with a screw hole 54c is formed on the side where the heat exchanger side connection port 54a is formed, and the suction chamber 54 is fastened and fixed to the side wall 3a of the poultry house 1 where the inside air suction port 14oi is formed. May be. Of course, other methods may be used as long as the inside air suction port 14oi and the suction chamber 54 can be connected in an airtight manner.

  The filter-side connection port 54 b of the suction chamber 54 is provided on the lower surface of the suction chamber 54. The filter 52 is fixed to the suction chamber 54 in a suspended state. FIG. 4 shows an AA cross section of FIG. In the filter side connection port 54b, a ring gear 56a having a gear around is disposed so as to be rotatable about the center of the filter side connection port 54b. The upper filter plate 52a of the filter 52 is fitted and fixed to the ring gear 56a. Of course, it can be said that the filter 52 is connected to the filter side connection port 54b of the suction chamber 54 in this state.

  Returning to FIG. 3, the filter device 50 is provided with a scattering prevention cover 58. This is to prevent the dust from the filter 52 from scattering around when the dust on the filter 52 is dropped. The scattering prevention cover 58 may be configured to cover the filter 52. That is, it is preferable to switch between a case where the anti-scattering cover 58 does not exist at all sides of the filter 52 and a state where at least three of the filters 52 are covered.

  In FIG. 3, a plastic cover that is pivotally supported on the side surface of the filter device 50 and covers the front surface and the left and right side surfaces of the filter 52 is illustrated as the scattering prevention cover 58. The scattering prevention cover 58 is usually in a state of being flipped up above the suction chamber 54 with the pivot shaft as the center of rotation (see FIG. 3C). When dust is removed from the filter 52, the scattering prevention cover 58 is lowered to the state shown in FIG. In this lowered state, the lower end of the scattering prevention cover 58 reaches at least the vicinity of the bedding.

  The anti-scattering cover 58 is not limited to such a form. A plastic curtain wound up in a roll shape is placed around the suction chamber 54 and lowered when used. The filter 52 may cover at least three directions other than the wall side.

  The dust removing means 56 is not particularly limited as long as it can remove dust from the filter 52 in a state where the filter 52 is covered with the anti-scattering cover 58. In particular, it is desirable to use mechanical vibration to knock off dust from the filter 52. In addition, a method of blowing off dust using air using a pulse jet may be used. This is because the dust removed from the filter 52 does not need to be collected in particular and may be left as it is, so that it is not necessary to employ a complicated method for collecting the dust. Of course, this does not exclude a mechanism for collecting dust.

  Here, as the dust removing means 56, a method of applying mechanical vibrations to the filter 52 by hitting the protrusion while rotating the filter 52 to knock off the dust is shown.

  With reference to FIG. 3, a projection 56 d that contacts the filter 52 when disposed at a position covering the filter 52 (see FIG. 3B) is provided inside the scattering prevention cover 58. Referring to FIG. 4, a vertical gear 56 b that is engaged with the ring gear 56 a at a right angle is disposed on the ring gear 56 a to which the filter 52 is fitted and fixed. A pivot 56 c of the vertical gear 56 b appears on the front surface of the suction chamber 54.

  Therefore, when the scattering prevention cover 58 is disposed at a position covering the filter 52, the protrusion 56 d comes into contact with the filter 52. Then, when the pivot 56c of the vertical gear 56b looking into the front surface of the suction chamber 54 is rotated by a hand drill or the like, the filter 52 rotates while being in contact with the projection 56d, so that the filter 52 is vibrated and dust is collected. It is knocked down.

  At this time, since the anti-scattering cover 58 surrounds the filter 52, the struck dust falls below the suction chamber 54 without being scattered. The dust removal timing of the filter 52 can be confirmed by visually checking each filter 52. As will be described later, the pressure difference in the air path before and after the fan 14of in the heat exchanger 14 is monitored. In addition, a method of notifying the user may be used.

  FIG. 5 shows another embodiment of the filter device 50 (filter device 50b). The filter device 50b has two heat exchanger side connection ports 54a. There may be variations in the amount of dust adhering to the filter 52 depending on the position of the group of broilers. In such a case, the air volume of each heat exchanger 14 varies, resulting in an area where the ventilation volume is reduced. Therefore, by connecting the suction chamber 54 to the plurality of heat exchangers 14, the air volume of each heat exchanger 14 can be made uniform.

  Therefore, in FIG. 5, two heat exchanger side connection ports 54 a are provided so that they can be connected to two heat exchangers 14, but they may be connected to three or more heat exchangers 14.

  FIG. 6 shows another embodiment of the filter device 50 (filter device 50c). In the filter device 50c, the filter 52 is placed away from the inner wall 3ai of the poultry house 1. The suction chamber 54 is fixed to the frame base 64 below. It is desirable that the frame base 64 is a shelf formed by only L-angle frame members so that dust during reproduction falls on the litter. A filter 52 is provided below the suction chamber 54. Therefore, the scattering prevention cover 58 and the dust removing means 56 are also provided in the same manner as the filter device 50a and the filter device 50b.

  One end of the duct 66 is connected to the heat exchanger side connection port 54a, and the other end is connected to the inside air suction port 14oi of the heat exchanger 14. By doing so, the inside air suction port 14oi of the heat exchanger 14 is substantially extended. The duct 66 is preferably a flexible duct, and the arrangement of the filter device 50 can be changed.

  Below, the ventilation system using such a filter apparatus 50 is illustrated. Referring to FIG. 1 (b) again, it is desirable that a plurality of heat exchangers 14 be provided on each of the side walls 3a and 3b of the poultry house 1. This is because the range that can be covered by one heat exchanger 14 is not so wide, and if there are many heat exchangers 14, it is easy to set the interior of the poultry house 1 in a uniform environment.

  A ventilation fan 12 is provided on the end walls 4a and 4b. The ventilation fan 12 may be provided on the side walls 3a and 3b instead of the end walls 4a and 4b. When the distance 4L between the end walls 4a and 4b is long, in order to ventilate the poultry house 1 only with the exhaust fan 12 disposed on the end walls 4a and 4b, it is necessary to rotate the high-power exhaust fan 12. Therefore, in such a case, it is preferable from the viewpoint of energy saving to provide a plurality of small ventilation fans 12 on the side walls 3a and 3b rather than providing the large ventilation fans 12 on the end walls 4a and 4b. Further, the door 13 described above may also be provided on the side wall 3a or the side wall 3b.

  On the other hand, when the distance 4L between the end walls 4a and 4b is not so long, providing the ventilation fans 12 on the end walls 4a and 4b has an effect of saving the initial investment.

  The poultry house 1 is further provided with several sensors. First, an outside air thermometer 16a and an outside air hygrometer 16b are provided outside the poultry house 1. The poultry house 1 is provided with an in-house thermometer 18a, an in-house hygrometer 18b, and an environmental meter 20 capable of measuring carbon dioxide, carbon monoxide, ammonia, and the amount of dust.

  Although the environmental measurement meter 20 is described here as one, there may be separate measuring devices for the carbon dioxide meter 20a, the carbon monoxide meter 20b, the ammonia meter 20c, and the dust meter 20d. In FIG. 1, these symbols are not described, but are described as one environment measuring instrument 20. Further, a measurement value obtained from the environmental meter 20 is referred to as an environmental index Ev. Therefore, the environmental meter 20 may be called an environmental index measuring device.

  The chicken house 1 may be provided with a camera 22. The floor surface 2 of the poultry house 1 is divided into a plurality of breeding zones Bz. The number of cameras 22 is set such that at least all the breeding zones Bz can determine whether or not there is a broiler.

  The poultry house 1 is provided with a control device 30. The control device 30 determines the ventilation amount and the operation of the heat exchanger 14 based on the outside air and the temperature and humidity in the building. FIG. 7 shows the configuration of the control device 30. The control device 30 operates with an MPU (Micro Processor Unit), a memory 30m, and a control program. The control device 30 is connected to an input device 31 for giving an instruction from the outside and a display device 32 capable of displaying the state in the poultry house 1.

  Signals from the outside thermometer 16a, the outside air hygrometer 16b, the building thermometer 18a, the building hygrometer 18b, the environment measuring meter 20, the input device 31, and the heat exchanger 14 are input to the control device 30. The control device 30 is connected to the heater 10, the ventilation fan 12, each heat exchanger 14, and the display device 32. An instruction signal can be output to these devices. In addition, about the heater 10, the ventilation fan 12, and each heat exchanger 14, when there are two or more, it can receive and instruct | indicate a signal with respect to each apparatus.

  Further, in the control device 30, a timer 30T, a management temperature determination unit 30A, a management ventilation amount determination unit 30B, a breeding zone determination unit 30C, a heat exchanger control unit 30D, an age determination unit 30E, and an outside air temperature detection unit 30F A filter detection unit 30G is provided. These may be provided with a dedicated circuit in the control device 30, but may be realized as software as a control program.

  Operation | movement is demonstrated, showing a flow about the control apparatus 30 of the ventilation system of the poultry house 1 which has the above structure. FIG. 8 is a part of the control flow of the ventilation system of the control device 30. The control device 30 may perform more control than shown here.

  When the process starts (step S100), initialization is performed (step S102). As initial settings, management temperature Tc, management humidity Hc, ΔT1, ΔT2, minimum ventilation volume Ae, value of correction value Ad based on environmental index Ev, designation of breeding zone Bz, and the like are input. As will be described later, the correction value Ad is a value that is considered when determining the number of operating heat exchangers 14. These values are changed according to the age of the broiler. Therefore, an equation for obtaining a value corresponding to the age and a table of each variable for each age are input in advance at the time of initial setting.

  Thereafter, when a broiler chick is accepted (Y branch in step S104), management is started. The breeding zone Bz described in the initial setting may be input at this time. The control device 30 starts an internal timer 30T (step S106). Or record the date and time of receipt. Thereafter, the current age is obtained by the age determination unit 30E based on the value of the timer 30T or the elapsed time from the date of acceptance. That is, the age determination unit 30E returns the current age Rd when requested. Here, the age of the day of acceptance (“current age Rd” at this stage) is recorded in the management age Md.

  Next, management parameters Mp such as management temperature Tc, management humidity Hc, ΔT1, ΔT2, and minimum ventilation volume Ae are determined based on the management day age Md (step S108). ΔT1 and ΔT2, which will be described later, are a margin for temperature management. The management temperature Tc, the management humidity Hc, ΔT1, and ΔT2 are determined by the management temperature determination unit 30A based on the management date Md. The correction value Ad based on the minimum ventilation volume Ae and the environmental index Ev is determined by the management ventilation volume determination unit 30B based on the management day age Md. Thereafter, if this routine is passed, the management parameter Mp is updated according to the management day age Md at that time.

  Next, a temperature obtained by subtracting ΔT1 ° C. from the management temperature Tc determined based on the management day age Md and the outside temperature To that is obtained by the outside temperature detector 30F by the outside temperature thermometer 16a is compared (step S110). If the outside air temperature To is low (Y branch of step S110), the heat exchanger 14 is started (step S112). That is, when the outside air temperature To falls below ΔT1 ° C. from the management temperature Tc, sufficiently cool air is taken in from the building, so the heat exchanger 14 is started and efforts are made to maintain the amount of heat. In addition, when starting the heat exchanger 14, the driving | operation of the ventilation fan 12 is stopped (step S112). If the heat exchanger 14 is already operating, the process proceeds to step S118 without doing anything.

  On the other hand, when the outside air temperature To is higher than the temperature obtained by subtracting ΔT1 ° C. from the management temperature Tc (N branch in step S110), the outside air temperature To is compared with the value obtained by adding ΔT2 ° C. to the management temperature Tc (step S114). If the outside air temperature To is higher than the temperature obtained by adding ΔT2 ° C. to the management temperature Tc (Y branch of step S114), the heat exchanger 14 is stopped and the ventilation fan 12 is started (step S116).

  In this case, since the cold air is not taken in from the outside from the outside, the heat exchanger 14 is stopped. If the heat exchanger 14 has already stopped, the process proceeds to the next flow without doing anything. If the determination in this step is No, nothing is done and the process proceeds to step S118. In step S110 and step S114, the inequality sign does not include a case where the values are equal to each other, but may be included. That is, the inequality sign in both steps may be “<” or “≦”.

  Next, it is determined whether or not the management parameter Mp needs to be changed (step S118). This determination is made based on whether or not the age has advanced. This is because the ventilation system operates according to the age. Specifically, if the management age Md and the current age Rd calculated by the age determination unit 30E are different (N branch in step S118), it is determined that the management parameter Mp needs to be changed.

  If it is determined that a change is necessary, the management age Md is incremented (step S120), and the process proceeds to step S108. If it is not necessary to change the management parameter Mp (Y branch in step S118), an end determination (step S122) is performed. The end determination may be made based on whether or not the current age Rd is the planned shipping age RE.

  When the process is to be ended (Y branch in step S122), an end process is performed (step S124) and the process is stopped (step S126). If the process does not end (N branch in step S122), the process proceeds to step S110.

  FIG. 9 shows an operation image of the heat exchanger 14 controlled by the above flow. First, reference is made to FIG. FIG. 9A shows the operation of the heat exchanger 14 within a day. The horizontal axis is time, and the vertical axis is temperature. Even during the day, the outside air temperature To decreases from midnight to dawn. When the sun rises, the outside air temperature To rises, and the outside air temperature To falls again from noon to evening. This is shown by the curve of the outside air temperature To.

  Assume that the management temperature Tc determined by the age at this time is determined as shown in FIG. 9A with respect to such a change in the outside air temperature To. Basically, the heat exchanger 14 is operated when the outside air temperature To is lower than the management temperature Tc, and is stopped when the outside air temperature To is higher than the management temperature Tc. And the control apparatus 30 of this invention will start an operation | movement, if outside temperature To becomes (DELTA) T1 degreeC or more lower than management temperature Tc. In FIG. 9A, the point “START14” is the operation start point of the heat exchanger 14.

  Further, the operation is stopped when the outside air temperature To becomes higher than the control temperature Tc by ΔT2 ° C. or more. In FIG. 9A, the point of “STOP 14” is the operation stop point of the heat exchanger 14. By performing such management, it becomes possible to give a sufficient amount of heat to the broiler during cold hours of the day, and to suppress wasteful operation / stop hunting of the heat exchanger 14.

  FIG. 9B is an explanatory diagram when the time axis is made longer. The horizontal axis is the number of breeding days, and the vertical axis is the temperature. The management temperature Tc is determined based on the age of the broiler, and the management temperature Tc decreases as the age advances. For example, the management temperature of chicks up to 7 days of age is required to be about 30 ° C., but the management temperature of adult birds that have passed 35 days of age and molted may be 16 to 18 ° C.

  In FIG. 9 (b), it can be seen that the management temperature Tc decreases with the number of breeding days (age). On the other hand, it is assumed that the outside air temperature To is moving from a low temperature to a high temperature as shown in FIG. Of course, the outside air temperature To varies depending on the season in which the poultry house 1 is set up.

  Here again, the heat exchanger 14 is operated when the outside air temperature To is lower than the management temperature Tc by ΔT1 ° C. or more, and is stopped when it is higher than the management temperature Tc by ΔT2 ° C. or more. FIG. 9B shows that after the breeding days W, the heat exchanger 14 has entered a period when it is not necessary to use it. Of course, as shown in FIG. 9A, the operation is repeatedly started and stopped according to the temperature during the day. Therefore, even in the season when the outdoor temperature To during the daytime is sufficiently higher than the house temperature, the heat exchanger 14 operates if the temperature before dawn is lower than the management temperature Tc by ΔT1 ° C. or more.

  As shown in FIG. 9B, ΔT1 is set to a large value according to the age of the broiler, and ΔT2 is set to a small value according to the age of the broiler. Broilers gain weight with age, and the broiler itself generates more heat. ΔT1 is set as a proportion of the rise in the building temperature due to the amount of heat generated by the broiler itself. ΔT2 is a value provided to suppress hunting of operation / stop of the heat exchanger 14, and the width of the dead zone (ΔT1 + ΔT2) is set to a constant value regardless of the age, so ΔT2 is the value of the broiler A small value is set according to the age. Thereby, useless driving | operation of the heat exchanger 14 can be suppressed and the energy saving of fuel cost reduction can be performed efficiently.

  FIG. 10 is a flow showing the details of the operation of the heat exchanger 14 in the flow of FIG. 8 (step S112). When operating the heat exchanger 14, first, the minimum ventilation amount Ae is determined (step S201). The minimum ventilation volume Ae is determined by the management ventilation volume determination unit 30B based on the management day age Md. This is because broilers know almost the required amount of oxygen according to their age.

  Further, the environmental index Ev may be taken into account for determining the minimum ventilation amount Ae. This is because there are cases where dust tends to stand up depending on the season and the condition of the bedding at that time, or the amount of ammonia in the air increases due to poor cleaning. Thus, when the environmental index Ev increases, it is necessary to perform ventilation that is equal to or greater than the minimum ventilation amount Ae calculated from the age. In the figure, it is described as “Ae = F (Md, Ad)” that the minimum ventilation volume Ae is determined based on the correction value Ad determined by the management day age Md and the environmental index Ev.

  How to determine the correction value Ad based on the environmental index Ev is determined by the type of broiler and other factors. The relationship between the environmental index Ev and the correction value Ad is preferably input at the time of initial setting (step S102) (see FIG. 8).

  Next, the filter 52 of the filter device 50 is inspected for clogging (step S202). The filter 52 is clogged by the filter detection unit 30G of the control device 30. Information on the differential pressure before and after the fan 14of in the heat exchanger 14 is received from each heat exchanger 14, and if the differential pressure is above a certain level, it is determined that the filter 52 is clogged (in step S202). (Y branch), a message to that effect is displayed on the display device 32 (step S203).

  In particular, the dust removal operation of the filter 52 is preferably performed with the heat exchanger 14 stopped. Therefore, it is desirable to perform the dust removal operation at this stage before starting the heat exchanger 14. If the differential pressure is within the specified value, it is determined that the filter 52 is not clogged (N branch of step S202), and the processing flow is shifted to the next. Note that information other than the differential pressure may be used to determine the occurrence of clogging.

  Next, it is confirmed whether or not the breeding zone Bz is designated (step S204). If the breeding zone Bz is designated (Y branch in step S204), the process proceeds to step S250.

  If the breeding zone Bz is not specified (N branch in step S204), a heat exchanger 14 (use device) used in the heat exchanger 14 and an operation pattern P14 for selecting continuous operation or intermittent operation are obtained. (Step S206). It is also assumed that this is given to the control device 30 in advance by a table or the like. Or you may make it obtain | require with a numerical formula. When the minimum ventilation volume Ae is smaller than the minimum ventilation volume capacity of the heat exchanger 14 to be used, the operation pattern P14 is intermittent operation, and in other cases, it is continuous operation. This process may be performed by the management ventilation amount determination unit 30B.

  When the heat exchanger 14 to be used and the operation pattern P14 are determined, an instruction is issued to the corresponding heat exchanger 14. This instruction may be performed by the heat exchanger control unit 30D. The heat exchanger 14 (corresponding device) that has received the instruction starts (step S208). The processing flow moves to step S118 in FIG. In this way, the heat exchanger 14 is operated.

  Processing when the breeding zone Bz is designated (Y branch in step S204) will be described. The designation of the breeding zone Bz means that the floor surface 2 of the chicken house 1 is divided into a plurality of sections and only a part of the breeding zone Bz is used. The designation of the breeding zone Bz is notified to the control device 30 by inputting to the control device 30 when the date of entry and the breeding zone Bz are changed. In the flow of FIG. 8, it can be performed in the initial setting in step S102 or the timer start portion in step S106.

  The control device 30 operates the heat exchanger 14 associated with the designated breeding zone Bz. When the camera 22 is set in the poultry house 1, if there is an instruction to use the breeding zone Bz, the control device 30 detects the breeding zone Bz currently used by viewing the video of the camera 22. To do. FIG. 10 shows a flow when the camera 22 is used. If a specific location of the breeding zone Bz is instructed, it is sufficient to skip to step S254.

  Specifically, images of the breeding zone Bz are copied at different times (step S250), and by comparing these, it is possible to determine which breeding zone Bz is used (step S252). Of course, the breeding zone Bz is determined by image analysis other than this, and the detection is completed. Such processing can be performed by the breeding zone determination unit 30C.

  When the breeding zone Bz is determined, the heat exchanger 14 and the operation pattern P14 to be used are determined (step S254). Thereafter, the corresponding heat exchanger 14 is instructed (step S256).

  FIG. 11A shows the floor surface 2 of the poultry house 1 divided into breeding zones Bz. It is assumed that there are four breeding zones Bz and the third zone from the left is used. The control device 30 knows that an instruction for this zone has been received in advance or that breeding is being performed in this zone through image analysis of the camera 22.

  And operation instruction | indication is performed to 4 sets 8 heat exchangers 14 which can cover a 3rd zone. In this way, since only the breeding zone Bz is ventilated and the entire poultry house 1 is not ventilated, unnecessary power consumption can be suppressed. In addition, when the minimum ventilation volume Ae is lower than the minimum ventilation volume of 4 sets of 8 heat exchangers 14, the uniformity of ventilation in the breeding zone Bz is ensured by operating each heat exchanger 14 in order.

  For example, in FIG. 11 (a), reference numerals 1 to 8 are assigned to the eight heat exchangers 14. Then, the heat exchanger 14 is operated in the order of the symbols, and when one unit is operating, the other heat exchanger 14 is stopped. Of course, you may perform intermittent operation about all the applicable heat exchangers 14. FIG.

  By operating the heat exchanger 14 intermittently in this manner, the inside of the breeding zone Bz can be uniformly ventilated, and the degree of contamination of the filter 52 and the heat exchange element 14a at the inside air suction port 14oi of the heat exchanger 14 can be adjusted. It can be made constant for each heat exchanger 14.

  FIG. 11B shows an example using the filter device 50c shown in FIG. Even when only the breeding thorn Bz is used, by providing the filter device 50c in the adjacent heat exchanger 14, not only the side walls 3a and 3b but also the central portion can be ventilated. Here, adjacent heat exchangers 14 are shown with numbers from 9 to 12. A duct 66 communicates between each heat exchanger 14 and the filter device 50c.

  As described above, the control device 30 of the ventilation system of the poultry house 1 using the heat exchanger 14 having the filter device 50 according to the present invention can perform temperature management and ventilation management according to the breeding days in the poultry house 1 and Necessary power consumption is suppressed and energy-saving operation can be performed.

  The filter device for heat exchangers installed in the poultry house according to the present invention can be suitably used in a livestock house with much dust, such as a poultry house for breeding broilers. Furthermore, it can be suitably used for a heater incorporating a heat exchanger with a narrow air passage.

DESCRIPTION OF SYMBOLS 1 Chicken house 2 Floor Bz Rearing zone 3a, 3b Side wall 3ai, 3bi Inner side wall 3ao, 3bo Outer side wall 3L Distance between side walls 3a, 3b 4a, 4b End wall 4L Distance between end walls 4a, 4b 5 Roof 2a Floor 2 No center line 10 Heater (Bruder)
10a Interval between each heater 10 Ventilation fan 13 Door 14 Heat exchanger 14a Heat exchange element 14o Exhaust air passage 14i Air supply air passage 14oi Inside air inlet 14oo Inside air outlet 14of Fan 14ii Outside air inlet 14io Outside air outlet 14if Fan P14 Operation pattern 16a of heat exchanger 14 Outside temperature thermometer 16b Outside humidity meter 18a Inside temperature meter 18b Inside humidity meter 20 Environmental meter (carbon dioxide meter 20a, carbon monoxide meter 20b, ammonia meter 20c, dust meter 20d)
Ev environmental index 22 camera 30 control device 30m memory 30T timer 30A management temperature determination unit 30B management ventilation amount determination unit 30C breeding zone determination unit 30D heat exchanger control unit 30E day age determination unit 30F outdoor temperature detection unit 30G filter detection unit 31 input Device 32 Display device 50 Filter device 52 Filter 52a Upper filter plate 52b Lower filter plate 54 Suction chamber 54a Heat exchanger side connection port 54b Filter side connection port 54f Flange with screw hole 54c 56 Dust removal means 56d Projection 56a Ring gear 56b Vertical Gear 56c Axis 58 Splash prevention cover 64 Frame base 66 Duct Tc Management temperature Hc Management humidity ΔT1, ΔT2
Ae Minimum ventilation volume Ad Value corrected by environmental index Ev Management parameter To Outside temperature Md Management day age Rd Current day RE Expected shipping day

Claims (6)

A heat exchanger filter device for exchanging heat between outside air and inside air outside a wall partitioning the inside and outside,
Filters,
A suction chamber having a filter side connection port connected to the filter and a heat exchanger side connection port connected to an inside air suction port of the heat exchanger;
Dust removing means for removing dust from the filter;
The filter apparatus for heat exchangers which has a scattering prevention cover which can cover the said filter.   The heat exchanger filter device according to claim 1, wherein the filter is a cylindrical filter.   The heat exchanger filter device according to claim 1, wherein the suction chamber is provided with a plurality of heat exchanger side connection ports that can be connected to the plurality of heat exchangers.   The filter device for a heat exchanger according to any one of claims 1 to 3, further comprising a frame member on which the filter is placed, and a duct that hermetically connects the filter side connection port and the filter. .   The filter device for a heat exchanger according to any one of claims 1 to 4, wherein the heat exchanger is used in a poultry house. A heat exchanger filter device according to claim 5;
A heat exchanger,
A management temperature determination unit that determines the management temperature based on the age of the broiler;
An outside air temperature detector for detecting the outside air temperature of the poultry house;
A heat exchanger control unit for controlling the operation of the heat exchanger;
When the outside air temperature is lower by ΔT1 ° C. than the management temperature, the heat exchanger is operated,
A poultry house ventilation system that stops the heat exchanger when the outside air temperature is higher by ΔT2 ° C. than the control temperature.