System toilet for pets

Abstract

A pet system toilet according to one aspect includes: a discharge table having a discharge surface with liquid permeability; a base supporting the discharge table, the base having a tray that receives excrement of a pet that passes through the discharge surface; an upper cover disposed above the discharge table, having an entrance for the pet and an air exchange port for air exchange, and dividing a discharge space between the discharge table and the upper cover; and a blowing fan that discharges air in the discharge space through the air exchange port, the blowing fan being capable of air exchanging the space of the discharge space within 1 minute, and the sound pressure of the discharge space when the blowing fan is in operation being 75 dB or less.

Description

Technical Field

[0001] This invention relates to a pet toilet system. Background Technology

[0002] Patent document 1 discloses a pet toilet comprising: a side wall having an inlet; an odor extraction chamber formed on the outer side of the side wall; an exhaust vent formed in the extraction chamber opposite to the inlet; and a fan installed at the exhaust vent.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Utility Model Publication No. Hei 1-105450 Summary of the Invention

[0006] The problem the invention aims to solve

[0007] In the aforementioned pet toilets, the odor of excrement is suppressed by using a fan to ventilate the excretion space. To provide a more comfortable excretion environment for pets, it is desirable to improve ventilation and deodorization performance. However, increasing the fan's ventilation capacity increases its noise level, which can sometimes cause pets to dislike using the toilet.

[0008] Therefore, the purpose of this disclosure is to provide a pet toilet system that achieves a balance between quiet operation and deodorization.

[0009] Solution for solving the problem

[0010] One proposed pet toilet system includes: a litter box with a permeable surface; a base supporting the litter box and having a tray to receive the pet's excrement that has passed through the surface; a top cover positioned above the litter box, having an entrance / exit for the pet and a ventilation vent, creating a litter space between the litter box and the top cover; and a blower fan that exhausts air from the litter space through the ventilation vent. The blower fan is capable of ventilating the litter space within one minute, and the sound pressure level in the litter space when the blower fan is operating is below 75 dB.

[0011] Compared to axial fans such as propeller fans, blower fans have higher static pressure characteristics, thus achieving a higher exhaust volume at a lower speed. Therefore, by using a blower fan, the air in the exhaust space can be exchanged within one minute, and the sound pressure level in the exhaust space during blower fan operation is below 75 dB. Thus, a balance between quiet operation and deodorization performance can be achieved.

[0012] Alternatively, the excretory surface may have multiple openings for the passage of excrement, with the ventilation port positioned above these openings. By positioning the ventilation port above the openings, odors from the excrement can be effectively removed.

[0013] Alternatively, the upper cover may include: a front wall portion having an inlet / outlet; a rear wall portion opposite to the front wall portion in the depth direction; a pair of side wall portions opposite to each other in the width direction perpendicular to the depth direction; and an upper wall portion opposite to the excretion surface in the vertical direction perpendicular to both the width and depth directions, with a vent formed in the upper wall portion. By forming the vent in the upper wall portion, odors from excrement can be effectively removed from the excretion space. Furthermore, when toilet sand is placed on the excrement platform, dust from the toilet sand is less likely to be drawn in, thus suppressing contamination from the blower fan.

[0014] Alternatively, the pet toilet system may include a fan unit with a housing that houses the blower fan. This fan unit can be detachably mounted on the upper wall of the top cover. Because the fan unit can be detached from the top cover for cleaning, it prevents a reduction in ventilation capacity caused by dirt buildup on the blower fan.

[0015] Alternatively, the outer shell may have: a bottom portion opposite to the upper wall portion; a top portion facing the side opposite to the bottom portion; and a peripheral portion connecting the bottom and top portions. The bottom portion has an air intake facing the ventilation port, and the peripheral portion has an exhaust port for discharging air drawn from the air intake to the outside of the shell. The shell has an exhaust path extending between the air intake and exhaust port. Because the exhaust port is formed on the peripheral portion of the shell, it is less likely to be blocked by the pet, even if the pet climbs onto the top portion of the shell. Therefore, the reduction in ventilation capacity can be suppressed.

[0016] Alternatively, the perimeter may include: a front portion; a back portion facing the opposite side to the front portion; a first side portion facing one side in the width direction; and a second side portion facing the other side in the width direction, with an exhaust vent formed on the back portion. By forming the exhaust vent on the back portion, it is possible to prevent exhaust vents from impacting the pet and the user.

[0017] Alternatively, the upper wall has a recessed portion that faces the drain surface, and the bottom surface of the housing has a protruding portion that faces the upper wall and engages with the recessed portion. By engaging the protruding portion of the housing with the recessed portion of the upper wall, the fan unit can be properly mounted on the upper cover.

[0018] Alternatively, the fitting protrusion may have claws that secure the housing to the upper wall. By using the claws to secure the housing to the upper wall, it is possible to prevent the fan unit from detaching from the upper cover.

[0019] Alternatively, when viewed from above, the blower's rotation axis can be positioned offset from the center point of the bottom surface. By offsetting the blower's rotation axis from the center point of the bottom surface, the cross-sectional area of ​​the exhaust path can be increased, thus improving the blower's ventilation capacity.

[0020] Alternatively, the upper cover may include: a front wall portion having an inlet / outlet; a rear wall portion opposite to the front wall portion in the depth direction; a pair of side wall portions opposite to each other in the width direction perpendicular to the depth direction; and a ventilation port formed in the rear wall portion. By forming the ventilation port in the rear wall portion, odors from excrement can be effectively discharged from the ventilation port.

[0021] Alternatively, the vent can be positioned slightly above the center of the rear wall in the vertical direction perpendicular to both the width and depth directions. By positioning the vent slightly above the center of the rear wall, odors from excrement can be effectively removed from the excretion space. Furthermore, when toilet sand is placed on the toilet platform, dust from the toilet sand is less likely to be drawn in, thus reducing contamination from the blower fan.

[0022] Alternatively, the ventilation port can be positioned slightly below the midpoint of the rear wall in the vertical direction perpendicular to both the width and depth directions. In this case, by positioning the ventilation port near the pet's excrement, the odor of the excrement can be effectively removed from the ventilation port.

[0023] Alternatively, the pet toilet system may include a fan unit with a housing for the blower fan, which can be detachably mounted on the rear wall of the upper cover. By making the fan unit detachable, it can be removed for cleaning, thus preventing a decrease in ventilation capacity caused by contamination of the blower fan.

[0024] Alternatively, the outer casing may have: a bottom portion facing the rear wall; a top portion facing the side opposite to the bottom portion; and a peripheral portion connecting the bottom and top portions. The bottom portion has an air intake facing the ventilation port, and the peripheral portion has an exhaust port for discharging air drawn from the air intake to the outside of the casing. The casing has an exhaust path extending between the air intake and the exhaust port. The exhaust port being formed on the peripheral portion prevents it from being blocked by the wall when the toilet system is installed against a wall.

[0025] Alternatively, the perimeter surface may have: an upper surface facing upwards; a lower surface facing downwards; a first side surface facing one side in the width direction; and a second side surface facing the other side in the width direction, with an exhaust vent formed on the upper surface surface. In this case, when the system toilet is installed against a wall, the exhaust vent can be prevented from being blocked by the wall.

[0026] Alternatively, the blower fan diameter can be 12cm or larger. By using a large blower fan, a constant exhaust volume can be ensured while reducing the blower fan speed. Therefore, the quietness of the pet toilet system can be improved.

[0027] Alternatively, the front wall may include a flow straightening section formed along the edge of the inlet / outlet, which, in a cross-sectional view parallel to the discharge surface, has a letter-V shape extending toward the discharge space. By forming the flow straightening section in the front wall, the airflow flowing from the inlet / outlet into the discharge space can be straightened. As a result, odors within the discharge space can be suppressed from flowing out of the inlet / outlet to the outside.

[0028] Alternatively, the pet toilet system may also include an odor-absorbing filter covering the ventilation vents. This filter contains activated carbon. In this case, it can absorb and remove odors from the exhaust fumes.

[0029] Alternatively, the air resistance value of the deodorizing filter can be above 0.01 kPa·s / m and below 0.25 kPa·s / m. Setting the air resistance value above 0.01 kPa·s / m improves the deodorization effect. Setting the air resistance value below 0.25 kPa·s / m suppresses pressure loss during exhaust and reduces the ventilation capacity of the blower fan.

[0030] Alternatively, pet toilet systems may also include an odor-removing filter positioned between the top cover and the fan unit, covering the ventilation opening. In this case, odors from exhaust fumes originating from the excrement space can be removed.

[0031] Alternatively, the deodorizing filter can be configured parallel to the exhaust surface. In this case, twisting or undulating of the deodorizing filter during exhaust can be prevented, thus suppressing the reduction of deodorizing performance.

[0032] Alternatively, the outer casing may have a protruding cylindrical portion that extends from the bottom surface toward the upper wall, forming an air intake. The front end of the protruding cylindrical portion abuts against the deodorizing filter. In this case, since the exhaust gas passing through the air intake reliably passes through the deodorizing filter, the deodorizing performance can be improved.

[0033] The effects of the invention

[0034] According to various embodiments of the present invention, it is possible to achieve a balance between quiet operation and deodorization performance in pet toilet systems. Attached Figure Description

[0035] Figure 1 This is a perspective view showing the main parts of a pet toilet system according to one embodiment.

[0036] Figure 2This is the main view of the pet toilet system.

[0037] Figure 3 This is a side view of a pet toilet system.

[0038] Figure 4 This is a rear view of a pet toilet system.

[0039] Figure 5 It is a pet toilet system along Figure 2 A cross-sectional view of the VV line.

[0040] Figure 6 This is a top view of a pet toilet system after the fan unit has been removed.

[0041] Figure 7 This is a bottom view of the fan unit.

[0042] Figure 8 This is a rear view of the fan unit.

[0043] Figure 9 This is a perspective view of a pet toilet system with the fan unit removed, according to another implementation method.

[0044] Figure 10 This is a side view of a pet toilet system.

[0045] Figure 11 This is a graph representing the results of an inhalation test. Detailed Implementation

[0046] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are labeled with the same reference numerals, and repeated descriptions are omitted. For ease of understanding, some parts may be simplified or exaggerated in the drawings, and the dimensions are not limited to those shown in the drawings.

[0047] Figure 1 This is a perspective view showing the main components of a pet toilet system (hereinafter referred to as "system toilet") 1 according to one embodiment. Figure 2 This is the main view of toilet 1 in the system. Figure 3 This is a side view of toilet 1 in the system. Figure 4 This is the rear view of toilet 1 in the system.

[0048] Figures 1-4 The toilet system 1 shown is a pet excretion device. In this specification, "pet" broadly includes vertebrates and invertebrates, typically including pets such as dogs, cats, rabbits, and hamsters. Typically, the toilet system 1 is installed indoors for pets kept indoors, providing an excretion space. Pet excrement is typically urine, but also includes low-viscosity feces, saliva, blood, and other bodily fluids.

[0049] like Figure 1 As shown, the toilet system 1 includes a base 2, a drain platform 3, a top cover 4, and a fan unit 5. The drain platform 3 is mounted on the base 2. The top cover is mounted on the drain platform 3. The fan unit 5 is mounted on the top cover 4.

[0050] Furthermore, in the following description, the stacking direction of the base 2, the drain platform 3, the upper cover 4, and the fan unit 5 is referred to as the "vertical direction Z," and the two directions perpendicular to the vertical direction Z are referred to as the "width direction X" and the "depth direction Y," respectively. Figure 1 In the illustrated embodiment, the width direction X is the direction parallel to the width direction of the system toilet 1 when viewed from the front. The depth direction Y is the direction perpendicular to both the width direction X and the vertical direction Z. In the following description, one direction of the depth direction Y is sometimes referred to as "front" and the other direction of the depth direction Y is sometimes referred to as "rear". In addition, the direction from the base 2 toward the fan unit 5 is sometimes referred to as "above" and the direction from the fan unit 5 toward the base 2 is sometimes referred to as "below".

[0051] The base 2 is an open container, including a bottom portion 21, a front wall portion 22, a rear wall portion 23, and a pair of side wall portions 24. The bottom portion 21 has a generally rectangular planar shape and is disposed opposite to the installation surface (e.g., the ground) of the system toilet 1. The front wall portion 22, the rear wall portion 23, and the pair of side wall portions 24 are erected from the periphery of the bottom portion 21. The front wall portion 22 and the rear wall portion 23 are opposite each other in the depth direction Y and extend substantially in the vertical direction Z. The pair of side wall portions 24 are opposite each other in the width direction X and extend substantially in the vertical direction Z. The two ends of the front wall portion 22 and the rear wall portion 23 in the width direction X are connected to the two ends of the pair of side wall portions 24 in the depth direction Y.

[0052] The base 2 includes a tray 25 for receiving pet excrement. The tray 25 is housed within the base 2 in a manner that allows it to slide along the depth direction Y. An absorbent sheet for absorbing excrement is placed on the tray 25 by a user (e.g., the pet owner). A recess for inserting a hand may also be formed on the front wall 22 of the base 2. Figure 1 As shown, the user can pull the tray 25 out of the base 2 by inserting his hand into the recess of the front wall 22 and sliding the tray 25 forward.

[0053] The litter box 3 is an open container, comprising a bottom surface 31 and walls 32. The bottom surface 31 and walls 32 are integrally formed, for example, from thermoplastic resin. The bottom surface 31 provides a litter surface 33 for the pet to climb on during defecation. Toilet litter may also be provided on the litter surface 33 of the bottom surface 31. Toilet litter is a granular material capable of absorbing or allowing urine or other excrement to pass through. Examples of toilet litter include bentonite that covers feces and absorbs liquids, waterproof-coated wood, paper, or zeolite, silica gel, minerals, etc., with deodorizing properties, shaped into approximately spherical shapes of a few millimeters to a few centimeters.

[0054] The bottom surface 31 has a generally rectangular planar shape and has multiple horizontal bars arranged in a curtain-like pattern. Multiple openings 34 are regularly formed between these horizontal bars. These openings 34 are positioned above the tray 25, allowing pet excrement to pass through. A wall surface 32 rises upwards from the periphery of the bottom surface 21. The wall surface 32 of the toilet platform 3 is supported on the base 2. When the pet steps onto the toilet surface 33 to defecate, the excrement falls through the multiple openings 34 onto the tray 25 and is absorbed by absorbent sheets disposed on the tray 25.

[0055] The upper cover 4 is positioned above the discharge platform 3. The upper cover 4 is a so-called fully covered container, comprising a front wall 41, a rear wall 42, a pair of side walls 43, and an upper wall 44. The front wall 41, rear wall 42, pair of side walls 43, and upper wall 44 are integrally formed, for example, from thermoplastic resin. The front wall 41 and rear wall 42 are opposite each other in the depth direction Y and extend substantially in the vertical direction Z. The pair of side walls 43 are opposite each other in the width direction X and extend substantially in the vertical direction Z. The two ends of the front wall 41 and rear wall 42 in the width direction X are connected to the two ends of the pair of side walls 43 in the depth direction Y. For the upper cover 4 to be positioned on the discharge platform 3, the lower ends of the front wall 41, rear wall 42, and pair of side walls 43 are extended into a skirt shape.

[0056] The front wall portion 41 is disposed above the front wall portion 22 of the base 2, separated by the wall surface 32 of the drain platform 3. The rear wall portion 42 is disposed above the rear wall portion 23 of the base 2, separated by the wall surface 32 of the drain platform 3. A pair of side wall portions 43 are disposed above a pair of side wall portions 24 of the base 2, separated by the wall surface 32 of the drain platform 3. The upper wall portion 44 connects to the upper ends of the front wall portion 41, the rear wall portion 42, and the pair of side wall portions 43. The lower part of the upper cover 4 is open.

[0057] The upper cover 4 divides the space between the litter platform 3 and the upper cover 4 to form a litter space 10. The litter space 10 is a space formed by the litter platform 3, a front wall 41, a rear wall 42, a pair of side walls 43, and an upper wall 44. The litter space 10 has an arbitrary volume corresponding to the size of the pet. For example, the volume of the litter space 10 is 0.02 m³. 3 Above and 0.10m3 The following is an explanation of the process. The discharge space 10 is connected to the internal space of the base 2 via a plurality of openings 34 on the discharge surface 33.

[0058] The front wall portion 41, rear wall portion 42, a pair of side wall portions 43, and upper wall portion 44 can also be inclined inwards as they move upwards, with their cross-sectional area perpendicular to the vertical direction Z of the excretion space 10 decreasing as they move upwards. Alternatively, they can be... Figure 3 As shown, the inclination angle of the front wall portion 41 relative to the plane (XY plane) perpendicular to the vertical direction Z is greater than the inclination angle of the rear wall portion 42 relative to the plane (XY plane) perpendicular to the vertical direction Z. Alternatively, the inclination angle of the front wall portion 41 relative to the plane (XY plane) perpendicular to the vertical direction Z may be greater than the inclination angle of the pair of side wall portions 43 relative to the plane (XY plane) perpendicular to the vertical direction Z.

[0059] like Figure 2 As shown, the upper cover 4 has a pet entrance / exit 11. The entrance / exit 11 is an opening for the pet's excretion space 10, and is formed on the front wall portion 41 of the upper cover 4. The entrance / exit 11 is, for example, generally rectangular in shape when viewed from the front, and has dimensions corresponding to the size of the pet. In addition, the entrance / exit 11 may also be continuously formed from the front wall portion 41 to a pair of side wall portions 43.

[0060] Figure 5 It is along Figure 2 A cross-sectional view of the VV line. It can also be like... Figure 5 As shown, the front wall portion 41 of the upper cover 4 includes a rectifier portion 48 formed along the edge of the inlet / outlet 11. The rectifier portion 48 has a letter V-shaped cross-sectional shape extending toward the exhaust space 10 and extends in the vertical direction Z. The rectifier portion 48 functions to rectify the airflow flowing from the inlet / outlet 11 into the exhaust space 10 when the blower fan 52 (described later) is operating, thereby suppressing odors in the exhaust space 10 from flowing out of the inlet / outlet 11.

[0061] In addition to the inlet / outlet 11, the upper cover 4 also has a ventilation port 12 for ventilation. The ventilation port 12 is an opening formed on the upper wall 44 of the upper cover 4 for discharging air from the excretion space 10 to the outside of the system toilet 1. Figure 6 This is a top view of the toilet system after fan unit 5 has been removed. (See attached image.) Figure 1 and Figure 6 As shown, a roughly quadrilateral vent 12 is formed in the upper wall portion 44. The vent 12 is connected to the inlet / outlet 11 via the discharge space 10. Figure 6 As shown, the center of the air vent 12 extends along the vertical direction Z and is positioned offset from the central axis AX passing through the center of the upper wall portion 44 when viewed from above.

[0062] A grid-like or curtain-like vent plate 45 is provided at the ventilation port 12 to prevent foreign objects from entering. The vent plate 45 is arranged parallel to the discharge surface 33 to cover the ventilation port 12 and has multiple slit-like openings that allow exhaust gas from the discharge space 10 to pass through. The vent plate 45 is detachably mounted to the upper wall portion 44 by means of a latching mechanism or the like. Therefore, the vent plate 45 can be removed from the upper wall portion 44 for cleaning.

[0063] In one implementation, such as Figure 1 As shown, the toilet system 1 also includes a deodorizing filter 50, which is disposed between the upper cover 4 and the fan unit 5, covering the ventilation port 12. The deodorizing filter 50 is disposed on the ventilation plate 45 to remove odors from the air passing through the ventilation port 12. The deodorizing filter 50 is disposed parallel to the exhaust surface 33. This prevents twisting, undulation, etc., of the deodorizing filter 50 during exhaust. The deodorizing filter 50 is positioned upstream of the blower fan 52, described later, in the exhaust flow direction. The deodorizing filter 50 contains, for example, fibers carrying activated carbon to absorb odors. Although not limited, the density of the deodorizing filter 50 can also be 0.007 g / cm³. 3 ~0.075g / cm 3 The weight per unit area of ​​the deodorizing filter 50 can also be 40gsm to 200gsm, more preferably 70gsm to 160gsm.

[0064] The deodorizing filter 50 can also have an air resistance value of 0.01 kPa·s / m or higher and 0.25 kPa·s / m or lower. The air resistance value can be measured using well-known methods. For example, a test piece of a predetermined size can be cut from the deodorizing filter 50, and the air resistance value of the test piece can be measured using an air resistance testing machine (KES-F8) manufactured by KATO TECH or an equivalent air resistance testing machine. For example, by releasing and drawing air through the test piece at a constant flow rate, the integral value of the pressure loss measured using a semiconductor differential pressure gauge can be used as the air resistance value. Then, the measurement of the air resistance value can be repeated multiple times (e.g., 5 times), and the average value can be used as the air resistance value of the deodorizing filter 50. By setting the air resistance value of the deodorizing filter 50 to 0.01 kPa·s / m or higher, the air passing through the air exchange port 12 can effectively contact the fibers of the deodorizing filter 50. By setting the air resistance value of the deodorizing filter 50 to below 0.25 kPa·s / m, pressure loss during exhaust can be suppressed, which in turn suppresses the speed of the blower fan 52 described later.

[0065] like Figure 6As shown, the upper wall portion 44 has a recessed portion 46 that is recessed downwards (towards the discharge surface 33). The recessed portion 46 has: a bottom surface 46a, which is approximately circular in shape about the central axis AX when viewed from above; and a side surface 46b, which is erected vertically from the bottom surface 46a and connected to the peripheral edge 44a of the upper wall portion 44. In the vertical direction Z, the bottom surface 46a is positioned lower than the peripheral edge 44a of the upper wall portion 44. An air vent 12 is formed on the bottom surface 46a. A plurality of notches 62 are formed on the side surface 46b, which are radially outwardly cut towards the bottom surface 46a. The plurality of notches 62 are arranged circumferentially around the central axis AX.

[0066] The fan unit 5 is detachably mounted on the upper wall 44 of the upper cover 4. The fan unit 5 includes a housing 51 and a blower fan 52. Figure 1 As shown, the outer casing 51 is generally truncated pyramidal in shape, having a bottom portion 53, a top portion 54 facing the side opposite to the bottom portion 53, and a peripheral portion 55 connecting the bottom portion 53 and the top portion 54. When the fan unit 5 is mounted on the upper cover 4, the bottom portion 53 is disposed opposite to the upper wall portion 44 of the upper cover 4.

[0067] The peripheral surface 55 includes a front portion 55a, a back portion 55b, and a pair of side portions 55c. The front portion 55a faces forward in the depth direction Y, and the back portion 55b faces backward in the depth direction Y. The pair of side portions 55c face outward in the width direction X. The front portion 55a and the back portion 55b are opposite each other in the depth direction Y and extend substantially in the vertical direction Z. The pair of side portions 55c are opposite each other in the width direction X and extend substantially in the vertical direction Z. The two ends of the front portion 55a and the back portion 55b in the width direction X are connected to the two ends of the pair of side portions 55c in the depth direction Y.

[0068] like Figure 3 As shown, the front portion 55a slopes inwards as it faces upwards, forming a smooth profile together with the front wall portion 41 of the upper cover 4 when viewed from the width direction X. Similarly, the back portion 55b slopes inwards as it faces upwards, forming a smooth profile together with the rear wall portion 42 of the upper cover 4 when viewed from the width direction X. Figure 2 As shown, the pair of side portions 55c, when viewed from the depth direction Y, form a smooth outline together with the pair of side wall portions 43 of the upper cover 4 and tilt inwards as they face upwards. That is, the tilt angles of the front portion 55a, the back portion 55b, and the pair of side portions 55c relative to the plane (XY plane) perpendicular to the vertical direction Z are the same as the tilt angles of the front wall portion 41, the rear wall portion 42, and the pair of side wall portions relative to the plane (XY plane) perpendicular to the vertical direction Z.

[0069] An operation panel 60 for receiving user input is provided on the front surface 55a. In one embodiment, the system toilet 1 includes a control device that controls the operation, shutdown, and speed of the blower fan 52 in response to the user's operation on the operation panel 60.

[0070] Figure 7 This is a bottom view of fan unit 5. (As shown) Figure 7 As shown, an air intake 13 is formed on the bottom surface 53 of the housing 51. The air intake 13 is a generally circular opening for guiding exhaust gas from the exhaust space 10 into the housing 51. A grid-like or curtain-like protective member 56 is provided on the air intake 13 to prevent foreign objects from entering the interior of the housing 51. The air intake 13 is formed at a position corresponding to the ventilation port 12. That is, when the fan unit 5 is mounted on the upper cover 4, the air intake 13 is parallel to the ventilation port 12 formed on the upper wall portion 44. When viewed from the vertical direction Z, the center position of the air intake 13 is positioned offset relative to the central axis AX.

[0071] Additionally, the outer casing 51 has a cylindrical protruding portion 68 that protrudes downward from the bottom portion 53 toward the upper wall portion 44. The protruding cylindrical portion 68 forms an air intake 13. The front end of the protruding cylindrical portion 68 abuts against the deodorizing filter 50 in the thickness direction. That is, when the fan unit 5 is installed on the upper cover 4, the deodorizing filter 50 is held between the protruding cylindrical portion 68 and the vent plate 45. As a result, exhaust gas passing through the air exchange port 12 reliably passes through the deodorizing filter 50.

[0072] Additionally, the bottom portion 53 is provided with a plurality of fitting protrusions 57 arranged circumferentially around the central axis AX and protruding downward from the bottom portion 53 (towards the upper wall portion 44). The plurality of fitting protrusions 57 extend in an arc shape circumferentially around the central axis AX. The plurality of fitting protrusions 57 have a shape corresponding to the fitting recesses 46 formed on the upper wall portion 44, and when the fan unit 5 is placed on the upper cover 4, the plurality of fitting protrusions 57 are inserted into the fitting recesses 46.

[0073] In one embodiment, the plurality of engaging protrusions 57 may each have a plurality of claws 58 protruding radially relative to the central axis AX. When the fan unit 5 is rotated in one direction around the central axis AX with the plurality of engaging protrusions 57 engaged with the plurality of notches 62, the fan unit 5 is fixed to the upper cover 4. This prevents the fan unit 5 from falling off the upper cover 4. When the fan unit 5 is rotated in the other direction around the central axis AX, the engagement of the plurality of claws 58 with the plurality of notches 62 is released, and the fan unit 5 can be removed from the upper cover 4. That is, the plurality of claws 58 and the plurality of notches 62 constitute a locking mechanism for fixing the fan unit 5 to the upper cover 4.

[0074] Figure 8 This is a rear view of fan unit 5. (As shown) Figure 4 and Figure 8 As shown, an exhaust port 14 is formed on the back side 55b of the housing 51. The exhaust port 14 is an opening for discharging air introduced into the housing 51 from the intake port 13 to the outside. A grid-like or curtain-like protective member 59 is provided on the exhaust port 14 to prevent foreign objects from entering the interior of the housing 51.

[0075] A conduit 65 is provided inside the housing 51 for dividing the exhaust path 64 (see reference). Figure 1 ).like Figure 7 As shown, exhaust path 64 is a flow path for supplying and exhausting air, extending in a curved manner within housing 51 between intake port 13 and exhaust port 14.

[0076] A blower fan 52 is disposed within the exhaust path 64. That is, the blower fan 52 is housed within the housing 51. The blower fan 52 is a multi-blade fan, referred to as a multi-blade fan, having a rotatable shaft 66 and multiple blades 67 connected to this shaft 66. The shaft 66 extends parallel to the central axis AX and rotates about its axis by the operation of a motor (not shown). The operation of the motor is controlled by a control device (not shown). When viewed from the vertical direction Z, the shaft 66 can also be configured in a manner consistent with the center position of the air inlet 12 and the air intake 13. That is, when viewed from the vertical direction Z, the shaft 66 is positioned offset from the central axis AX.

[0077] Multiple blades 67 are arranged circumferentially around a rotation axis 66. Each blade 67 extends parallel to the rotation axis 66, tangentially to the circumference centered on the rotation axis 66. The blower fan 52 rotates around the rotation axis 66 as it rotates, generating an airflow that draws in air in a direction parallel to the rotation axis 66 and exhausts air radially in a direction centered on the rotation axis 66. That is, the blower fan 52 exhausts air in a direction different from the intake direction.

[0078] For example, when the user operates the control panel 60 to activate the blower fan 52, the air in the exhaust space 10 flows vertically in the Z direction through the ventilation port 12 formed on the upper wall 44, and is introduced into the exhaust path 64 via the intake port 13. At this time, the exhaust passes through the deodorizing filter 50, thereby removing odors from the exhaust. The exhaust introduced into the exhaust path 64 changes its flow direction within the exhaust path 64 and is discharged from the exhaust port 14 towards the rear in the depth direction Y. Thus, the exhaust space 10 is ventilated, and the odor of excrement is removed from the exhaust space 10.

[0079] Because the blower fan 52 has higher static pressure characteristics compared to axial fans such as propeller fans, it can achieve a higher exhaust volume at a lower speed. Specifically, the blower fan 52 can exhaust air from the exhaust space 10 within one minute, and the sound pressure in the exhaust space 10 is suppressed to below 75 dB when the blower fan 52 is operating. That is, the exhaust volume of the blower fan 52 per minute is greater than the volume of the exhaust space 10. For example, the exhaust volume of the blower fan 52 per minute can be more than 2 times, 5 times, 10 times, 15 times, or 20 times the volume of the exhaust space 10.

[0080] The minute exhaust volume of the blower fan 52 can be measured using well-known methods. For example, when measuring the minute exhaust volume of the blower fan 52, the blower fan 52 is operated, and after remaining stationary for more than 6 seconds, a collection bag is placed over the exhaust port 14. During a 3-second period, the exhaust from the exhaust port 14 is collected into the collection bag. At this time, the collection bag remains horizontal with the exhaust port 14. Next, the collection bag is removed from the exhaust port 14, its opening is tied tightly, and it is placed into an acrylic tank, which is then covered with an acrylic sheet. Next, while holding the collection bag down with the acrylic sheet to prevent it from floating, water is added to the acrylic tank, and the first water volume is recorded until the tank is full. Next, the collection bag is removed from the acrylic tank, water is added to the empty acrylic tank, and the second water volume is recorded until the tank is full. Then, the minute exhaust volume is calculated using the following formula.

[0081] Exhaust volume per minute [m 3 / min]=(Second injection volume[m 3 - First injection volume [m] 3 ]) / [3s]

[0082] For example, the exhaust volume of the blower fan 52 after removing the deodorizing filter 50 is 0.5 m³ / min. 3 / min or higher and 3.0m 3 The sound pressure level of the exhaust space 10 when the blower fan 52 is working can also be below 50dB.

[0083] The sound pressure level of the excretion space 10 can be obtained by placing a noise meter (e.g., a small digital noise meter RAMA11O08 manufactured by THANKO) at the center of the excretion surface 33 and measuring the sound pressure level when the blower fan 52 is operating. Furthermore, 75 dB is equivalent to the sound pressure level of a cat's meow, which is a very low sound. Therefore, the toilet system 1 has excellent quietness and can prevent pets from disliking using the toilet due to noise.

[0084] Furthermore, the blower fan 52 can be 12cm or larger. Alternatively, the blower fan 52 can be 15cm or larger. By making the blower fan 52 larger, a constant exhaust volume can be ensured while reducing the speed of the blower fan 52. Therefore, the quietness of the toilet system 1 can be improved.

[0085] As explained above, since the system toilet 1 exhausts the air from the excretion space 10 within one minute, and the sound pressure level of the excretion space 10 when the blower fan 52 is operating is set to below 75 dB, a balance between quiet operation and deodorization performance can be achieved. Furthermore, in the system toilet 1, air from the excretion space 10 is drawn in through the ventilation port 12 formed at the top of the upper cover 4 and discharged to the rear of the system toilet 1 through the exhaust port 14. Therefore, even if pets such as cats climb onto the top surface 54 of the fan unit 5, the exhaust port 14 is less likely to be blocked by the pets, thus preventing a decrease in ventilation capacity. Additionally, the exhaust port 14 is formed at the rear surface 55b, thereby preventing exhaust from impacting pets and users.

[0086] Furthermore, in the system toilet 1, since a deodorizing filter 50 is disposed between the upper cover 4 and the fan unit 5, odors can be removed from the exhaust gas from the excretion space 10. In particular, since the deodorizing filter 50 is disposed upstream of the exhaust gas than the blower fan 52, pet hair or dust contained in the exhaust gas can be removed by the deodorizing filter 50, and the contamination of the blower fan 52 can be suppressed.

[0087] Secondly, refer to Figure 9 The system toilet 1A is described in other embodiments. Figure 9 This is a 3D view of the toilet system 1A after the fan unit 5 has been removed. The following mainly focuses on... Figure 1 The differences of toilet 1 shown in the system will be explained, and repeated explanations will be omitted.

[0088] like Figure 9 As shown, the toilet system 1A has an open upper cover 4A. The upper cover 4A is a so-called semi-covered container, differing from the upper cover 4 in that it includes a front wall portion 41, a rear wall portion 42, and a pair of side walls 43, but excludes the upper wall portion 44. The upper cover 4A divides the space between the drain platform 3 and itself to form a drain space 10. The drain space 10 is a space formed by the drain platform 3, the front wall portion 41, the rear wall portion 42, and the pair of side walls 43.

[0089] The upper cover 4A has a ventilation port 12 for air exchange. The ventilation port 12 is formed in the rear wall portion 42 of the upper cover 4A. Figure 9As shown, the ventilation port 12 includes a plurality of slit-shaped openings extending in the width direction X. The ventilation port 12 is positioned above the discharge surface 33 of the discharge platform 3, and more specifically, above the midpoint of the rear wall portion 42 in the vertical direction Z. By forming the ventilation port 12 in the upper part of the rear wall portion 42, pet litter disposed on the bottom surface 31 is less likely to be sucked into the fan unit 5A described later, thus suppressing contamination of the blower fan 52 caused by pet litter.

[0090] Furthermore, in one embodiment, the ventilation port 12 may be positioned slightly below the midpoint of the rear wall portion 42 in the vertical direction Z. In this case, since the ventilation port 12 is positioned near the pet's excrement, the odor of the excrement can be effectively removed from the ventilation port 12.

[0091] Figure 10 This is a side view of the system toilet 1A. The system toilet 1A includes a fan unit 5A. The fan unit 5A has a substantially the same structure as the fan unit 5 described above, but differs from the fan unit 5 in that it can be detachably mounted on the rear wall portion 42 of the upper cover 4A.

[0092] like Figure 10 As shown, the fan unit 5A includes a housing 51A. The housing 51A is generally frustum-shaped and has a bottom portion 53, a top portion 54 facing the side opposite to the bottom portion 53, and a peripheral portion 55 connecting the bottom portion 53 and the top portion 54. When the fan unit 5A is mounted on the upper cover 4A, the bottom portion 53 is disposed opposite to the rear wall portion 42 of the upper cover 4A.

[0093] The peripheral surface 55 includes an upper surface portion 75a, a lower surface portion 75b, and a pair of side surfaces 75c. The upper surface portion 75a faces upward, and the lower surface portion 75b faces downward. The pair of side surfaces 55c face outward in the width direction X. The upper surface portion 75a and the lower surface portion 75b are opposite to each other in the vertical direction Z and substantially extend along the width direction X. The pair of side surfaces 55c are opposite to each other in the width direction X and substantially extend along the vertical direction Z. The two ends of the upper surface portion 75a and the lower surface portion 75b in the width direction X are connected to the two ends of the pair of side surfaces 55c in the vertical direction Z.

[0094] An air intake 13 is formed on the bottom surface 53 of the housing 51A. That is, when the fan unit 5A is mounted on the upper cover 4A, the air intake 13 is side by side (facing each other) with the air exchange 12 formed on the rear wall portion 42. An exhaust port 14 is formed on the upper surface portion 75a of the housing 51A. An exhaust path 64 is formed inside the fan unit 5A, and inside the housing 51A, the exhaust path 64 extends in a curved manner between the air intake 13 and the exhaust port 14.

[0095] A blower fan 52 is installed within the exhaust path 64. The blower fan 52 exhausts air from the exhaust space 10 within one minute, and the sound pressure in the exhaust space 10 is suppressed to below 75 dB when the blower fan 52 is operating. When the blower fan 52 is operating, air in the exhaust space 10 is discharged from the ventilation port 12 formed on the rear wall portion 42 and introduced into the exhaust path 64 via the intake port 13. At this time, the exhaust passes through the deodorizing filter 50, thereby removing odors from the exhaust. The exhaust introduced into the exhaust path 64 changes its flow direction within the exhaust path 64 and is discharged upward from the exhaust port 14 formed on the upper surface portion 75a. Thus, the exhaust space 10 is ventilated, and the odors of excrement are removed from the exhaust space 10.

[0096] As explained above, since the system toilet 1A exhausts the air from the excretion space 10 within one minute, and the sound pressure level of the excretion space 10 when the blower fan 52 is operating is set to below 75 dB, a balance between quiet operation and deodorization performance can be achieved. Furthermore, in the system toilet 1A, air is drawn from the excretion space 10 through the ventilation port 12 formed in the rear wall portion 42 of the upper cover 4A and discharged from the exhaust port 14 to the top of the system toilet 1A. Therefore, even when the system toilet 1A is installed against a wall, the exhaust port 14 can be prevented from being blocked by the wall.

[0097] The above description illustrates various embodiments of the toilet system 1 and 1A. However, the present invention is not limited to the embodiments described above, and various modifications can be made without changing the spirit of the invention. That is, it should be noted that the above embodiments are for illustrative purposes only and do not limit the scope of the present invention.

[0098] The following describes an experimental example of a system toilet, but the present invention is not limited to the following embodiments.

[0099] In Experiments 1-5 and Comparative Experiment 1, inhalation tests of odors (fecal odor) were conducted using various fans. In the inhalation tests, Figures 1-4 The toilet system 1 shown has a flaming stove in its excretion space 10. When the excretion space 10 is vented, it is determined whether smoke is emitted from the inlet 11. In Experimental Examples 1-5, inhalation tests were conducted using blower fans 52 with diameters of 88mm, 120mm, 140mm, 160mm, and 164mm, respectively. In Comparative Experimental Example 1, an axial flow fan with a diameter of 160mm was used instead of the blower fan 52 in the inhalation test.

[0100] Figure 11 The results of the inhalation test are shown. Figure 11 In the diagram, A indicates that smoke was not released from inlet / outlet 11 to the outside during the inhalation test, and B indicates that smoke was released from inlet / outlet 11 to the outside during the inhalation test. According to... Figure 11 The results show that by using the blower fan 52, the sound pressure level of the exhaust space 10 can be set to below 75 dB. Furthermore, it is confirmed that by setting the diameter of the blower fan 52 to 120 mm or more, odors can be effectively removed. On the other hand, when using an axial fan, it is confirmed that the sound pressure level of the exhaust space 10 is greater than 75 dB, and the odor removal capacity is insufficient.

[0101] This disclosure includes the following.

[0102] [1] A pet toilet system, wherein,

[0103] This pet toilet system features:

[0104] A draining platform, which has a draining surface that is permeable to liquid;

[0105] The base supports the excrement platform and has a tray for receiving the pet's excrement that has passed through the excrement surface;

[0106] An upper cover, positioned above the litter box, has an entrance / exit for pets and a ventilation opening for air exchange, dividing the litter box and the upper cover to form a litter space; and

[0107] A blower fan discharges air from the exhaust space through the ventilation port.

[0108] The blower fan can exchange the air in the exhaust space within 1 minute.

[0109] The sound pressure level in the exhaust space when the blower fan is in operation is below 75 dB.

[0110] [2] According to the pet toilet system described in [1], wherein,

[0111] The excretory surface has multiple openings that allow the excrement to pass through.

[0112] The ventilation port is positioned above the plurality of openings.

[0113] [3] The pet toilet system according to [1] or [2], wherein,

[0114] The upper cover includes: a front wall portion having the inlet / outlet; a rear wall portion opposite to the front wall portion in the depth direction; a pair of side wall portions opposite to each other in a width direction perpendicular to the depth direction; and an upper wall portion opposite to the discharge surface in a vertical direction perpendicular to both the width and depth directions.

[0115] The ventilation opening is formed on the upper wall portion.

[0116] [4] According to the pet toilet system described in [3], wherein,

[0117] This pet toilet system includes a fan unit with a housing for the blower fan.

[0118] The fan unit can be detachably mounted on the upper wall of the upper cover.

[0119] [5] According to the pet toilet system described in [4], wherein,

[0120] The outer casing has: a bottom portion opposite to the upper wall portion; a top portion facing the side opposite to the bottom portion; and a peripheral portion connecting the bottom portion and the top portion.

[0121] The bottom surface has an air intake facing the air exchange port.

[0122] The peripheral surface has an exhaust port that discharges air drawn in from the intake port to the outside of the housing.

[0123] The housing has an exhaust path extending between the intake port and the exhaust port.

[0124] [6] According to the pet toilet system described in [5], wherein,

[0125] The peripheral surface includes: a front portion; a back portion facing the side opposite to the front portion; a first side portion facing one side in the width direction; and a second side portion facing the other side in the width direction.

[0126] The exhaust port is formed on the rear side.

[0127] [7] The pet toilet system according to [5] or [6], wherein,

[0128] The upper wall portion has a fitting recess that is recessed towards the discharge surface.

[0129] The bottom surface of the outer casing has a mating protrusion that protrudes toward the upper wall and engages with the mating recess.

[0130] [8] According to the pet toilet system described in [7], wherein,

[0131] The fitting protrusion has claws for fixing the outer shell to the upper wall.

[0132] [9] A pet toilet system according to any one of [5] to [8], wherein,

[0133] When viewed from the above and below, the rotation axis of the blower fan is positioned offset from the center point of the bottom surface.

[0134]

[10] A pet toilet system according to any one of [1] to [9], wherein,

[0135] The upper cover includes: a front wall portion having the inlet / outlet; a rear wall portion opposite to the front wall portion in the depth direction; and a pair of side wall portions opposite to each other in the width direction perpendicular to the depth direction.

[0136] The ventilation port is formed in the rear wall portion.

[0137]

[11] According to the pet toilet system described in

[10] , wherein,

[0138] The ventilation port is positioned above the middle position of the rear wall in the vertical direction perpendicular to the width and depth directions.

[0139]

[12] According to the pet toilet system described in

[10] , wherein,

[0140] The ventilation port is positioned slightly below the middle position of the rear wall in the vertical direction perpendicular to both the width and depth directions.

[0141]

[13] According to the pet toilet system described in

[10] , wherein,

[0142] This pet toilet system includes a fan unit with a housing for the blower fan.

[0143] The fan unit can be detachably mounted on the rear wall of the upper cover.

[0144]

[14] According to the pet toilet system described in

[13] , wherein,

[0145] The outer casing has: a bottom portion facing the rear wall; a top portion facing the side opposite to the bottom portion; and a peripheral portion connecting the bottom portion and the top portion.

[0146] The bottom surface has an air intake facing the air exchange port.

[0147] The peripheral surface has an exhaust port that discharges air drawn in from the intake port to the outside of the housing.

[0148] The housing has an exhaust path extending between the intake port and the exhaust port.

[0149]

[15] According to the pet toilet system described in

[14] , wherein,

[0150] The peripheral surface includes: an upper surface portion facing upward; a lower surface portion facing downward; a first side surface portion facing one side in the width direction; and a second side surface portion facing the other side in the width direction.

[0151] The exhaust port is formed on the upper surface portion.

[0152]

[16] A pet toilet system according to any one of [1] to

[15] , wherein,

[0153] The diameter of the blower fan is 12cm or more.

[0154]

[17] A pet toilet system according to any one of [3] to

[15] , wherein,

[0155] The front wall portion includes a flow straightening section formed along the edge of the inlet / outlet.

[0156] In a cross-sectional view parallel to the discharge surface, the rectifying section has a letter V-shaped shape that extends toward the discharge space.

[0157]

[18] A pet toilet system according to any one of [1] to

[17] , wherein,

[0158] The pet toilet system also features a deodorizing filter that covers the ventilation opening.

[0159]

[19] According to the pet toilet system described in

[18] , wherein,

[0160] The deodorizing filter contains activated carbon.

[0161]

[20] According to the pet toilet system described in

[18] or

[19] , wherein,

[0162] The air resistance value of the deodorizing filter is above 0.01 kPa·s / m and below 0.25 kPa·s / m.

[0163]

[21] A pet toilet system according to any one of [1] to

[20] , wherein,

[0164] The pet toilet system also features an odor-removing filter positioned between the upper cover and the fan unit, covering the ventilation opening.

[0165]

[22] According to the pet toilet system described in

[21] , wherein,

[0166] The deodorizing filter is configured parallel to the discharge surface.

[0167]

[23] According to the pet toilet system described in

[21] , wherein,

[0168] The outer casing has a protruding cylindrical portion that extends from the bottom surface toward the upper wall, forming the air intake.

[0169] The front end of the protruding cylindrical portion abuts against the deodorizing filter.

[0170] Explanation of reference numerals in the attached figures

[0171] 1. Pet toilet system; 2. Base; 3. Littering platform; 4. 4A. Cover; 5. 5A. Fan unit; 10. Excretion space; 11. Inlet / outlet; 12. Ventilation port; 13. Inlet; 14. Exhaust port; 41. Front wall; 42. Rear wall; 43. Side wall; 25. Tray; 33. Excretion surface; 34. Opening; 44. Upper wall; 46. Fitting recess; 48. Rectifier; 50. Odor filter; 51. 51A. Outer 52. Shell; 53. Blower fan; 54. Bottom surface; 55. Top surface; 55. Peripheral surface; 55a. Front surface; 55b. Back surface; 55c. Side surface (first side surface and second side surface); 57. Fitting protrusion; 58. Claw; 64. Exhaust path; 66. Rotation shaft; 68. Protruding cylindrical part; 75a. Upper surface; 75b. Lower surface; 75c. Side surface; X. Width direction; Y. Depth direction; Z. Up and down direction.

Claims

1. A pet toilet system, wherein, This pet toilet system features: A draining platform, which has a draining surface that is permeable to liquid; The base supports the excrement platform and has a tray for receiving the pet's excrement that has passed through the excrement surface; An upper cover, positioned above the litter box, has an entrance / exit for pets and a ventilation opening for air exchange, dividing the litter box and the upper cover to form a litter space; and A blower fan discharges air from the exhaust space through the ventilation port. The blower fan can exchange the air in the exhaust space within 1 minute. The sound pressure level in the exhaust space when the blower fan is in operation is below 75 dB.

2. The pet toilet system according to claim 1, wherein, The excretory surface has multiple openings that allow the excrement to pass through. The ventilation port is positioned above the plurality of openings.

3. The pet toilet system according to claim 1, wherein, The upper cover includes: a front wall portion having the inlet / outlet; a rear wall portion opposite to the front wall portion in the depth direction; a pair of side wall portions opposite to each other in a width direction perpendicular to the depth direction; and an upper wall portion opposite to the discharge surface in a vertical direction perpendicular to both the width and depth directions. The ventilation opening is formed on the upper wall portion.

4. The pet toilet system according to claim 3, wherein, This pet toilet system includes a fan unit with a housing for the blower fan. The fan unit can be detachably mounted on the upper wall of the upper cover.

5. The pet toilet system according to claim 4, wherein, The outer casing has: a bottom portion opposite to the upper wall portion; and a top portion facing the side opposite to the bottom portion. And the peripheral surface, which connects the bottom surface and the top surface. The bottom surface has an air intake facing the air exchange port. The peripheral surface has an exhaust port that discharges air drawn in from the intake port to the outside of the housing. The housing has an exhaust path extending between the intake port and the exhaust port.

6. The pet toilet system according to claim 5, wherein, The peripheral surface includes: a front portion; a back portion facing the side opposite to the front portion; a first side portion facing one side in the width direction; and a second side portion facing the other side in the width direction. The exhaust port is formed on the rear side.

7. The pet toilet system according to claim 5, wherein, The upper wall portion has a fitting recess that is recessed towards the discharge surface. The bottom surface of the outer casing has a mating protrusion that protrudes toward the upper wall and engages with the mating recess.

8. The pet toilet system according to claim 7, wherein, The fitting protrusion has claws for fixing the outer shell to the upper wall.

9. The pet toilet system according to claim 5, wherein, When viewed from the above and below, the rotation axis of the blower fan is positioned offset from the center point of the bottom surface.

10. The pet toilet system according to claim 1, wherein, The upper cover includes: a front wall portion having the inlet / outlet; a rear wall portion opposite to the front wall portion in the depth direction; and a pair of side wall portions opposite to each other in the width direction perpendicular to the depth direction. The ventilation port is formed in the rear wall portion.

11. The pet toilet system according to claim 10, wherein, The ventilation port is positioned above the middle position of the rear wall in the vertical direction perpendicular to the width and depth directions.

12. The pet toilet system according to claim 10, wherein, The ventilation port is positioned slightly below the middle position of the rear wall in the vertical direction perpendicular to both the width and depth directions.

13. The pet toilet system according to claim 10, wherein, This pet toilet system includes a fan unit with a housing for the blower fan. The fan unit can be detachably mounted on the rear wall of the upper cover.

14. The pet toilet system according to claim 13, wherein, The outer casing has a bottom portion, which is opposite to the rear wall; The top surface faces the opposite side to the bottom surface; And the peripheral surface, which connects the bottom surface and the top surface. The bottom surface has an air intake facing the air exchange port. The peripheral surface has an exhaust port that discharges air drawn in from the intake port to the outside of the housing. The housing has an exhaust path extending between the intake port and the exhaust port.

15. The pet toilet system according to claim 14, wherein, The peripheral surface includes: an upper surface portion facing upward; a lower surface portion facing downward; a first side surface portion facing one side in the width direction; and a second side surface portion facing the other side in the width direction. The exhaust port is formed on the upper surface portion.

16. The pet toilet system according to claim 1, wherein, The diameter of the blower fan is 12cm or more.

17. The pet toilet system according to claim 3 or 10, wherein, The front wall portion includes a flow straightening section formed along the edge of the inlet / outlet. In a cross-sectional view parallel to the discharge surface, the rectifying section has a letter V-shaped shape that extends toward the discharge space.

18. The pet toilet system according to claim 1, wherein, The pet toilet system also features a deodorizing filter that covers the ventilation opening.

19. The pet toilet system according to claim 18, wherein, The deodorizing filter contains activated carbon.

20. The pet toilet system according to claim 18, wherein, The air resistance value of the deodorizing filter is above 0.01 kPa·s / m and below 0.25 kPa·s / m.

21. The pet toilet system according to claim 5, wherein, The pet toilet system also features an odor-removing filter positioned between the upper cover and the fan unit, covering the ventilation opening.

22. The pet toilet system according to claim 21, wherein, The deodorizing filter is configured parallel to the discharge surface.

23. The pet toilet system according to claim 21, wherein, The outer casing has a protruding cylindrical portion that extends from the bottom surface toward the upper wall, forming the air intake. The front end of the protruding cylindrical portion abuts against the deodorizing filter.

Images