JP5439730B2 - Heat exchange unit - Google Patents

Description

  The present invention relates to a heat exchange unit, and more particularly, to a heat exchange unit for a sanitary washing apparatus that supplies hot water for local washing.

  There is a sanitary washing device for local cleaning that heats tap water and discharges hot water from a nozzle or the like toward a local body part. As such a sanitary washing apparatus, a sanitary washing apparatus including an instantaneous heating type heat exchanger has been proposed. In a sanitary washing device equipped with this instantaneous heating type heat exchanger, a heat exchanger such as a heater is arranged in the water pipe, so that water can be instantaneously heated directly, and energy loss due to heat radiation is reduced. There are advantages such as being small.

  In Patent Documents 1 and 2, a heat exchange section that includes a water pipe supplied from a water supply source and directly heats water instantaneously by arranging a heater in the pipe, and flows from the heat exchange section There has been proposed a heat exchange device (instantaneous heating type heat exchange device) provided with a temperature stabilizing unit that stabilizes the temperature of the hot water to be produced. In this device, an inflow channel that guides hot water to the temperature stabilizing part, a communication hole that communicates the inflow channel and the heat exchange unit, and a channel part that is in the middle of the inflow channel and that follows the communication hole, An expansion chamber having an expanded channel cross section is provided. Therefore, the hot water flowing in from the heat exchanging part is squeezed in the communication hole, expanded in the expansion chamber, and further stirred in the squeezing in the inflow channel. As a result, the temperature of the hot water is stabilized.

JP 2001-132061 A JP 2001-1332060 A

  In the devices of Patent Documents 1 and 2, since the expansion chamber is provided in the middle of the inflow channel between the heat exchange part and the temperature stabilization part, each connection part between the heat exchange part and the temperature stabilization part is Consists of complex shapes. Therefore, low moldability and high mold machining accuracy are required, and the cost increases. In addition, since it is required that the sealing member (packing) provided in the connection part to be formed in a complicated shape in order to prevent water leakage, there is a possibility that the assembling property is low and water leakage is low, and versatility is low, There is also a problem that the cost becomes high.

  An object of the present invention is to provide an inexpensive heat exchange unit capable of supplying warm water at a uniform and stable temperature.

The present invention, in viewpoint of the first -1, a heat exchange unit comprising a heating means for heating the water passing through the flow path and the flow path of the water, the hot water predetermined flowing from the heat exchanger temperature ( For example , in the heat exchange unit including a temperature stabilizing unit that is uniformized and stabilized at about 35 to 40 ° C., the temperature stabilizing unit includes a communication hole that communicates with the heat exchange unit, an outlet hole, and the communication hole. And an inflow passage through which the hot water from the heat exchanging part is introduced from the communication hole and guides the hot water to the outlet hole, and the temperature stabilizing part is a cylinder. And the inflow passage is formed only by an arc-shaped passage along the inner peripheral surface of the temperature stabilizing portion (hereinafter referred to as “the heat exchange unit of the present invention”). Can also be provided.
In the first to second aspects, the present invention provides a heat exchange unit including a water channel and a heating unit for heating water passing through the channel, and warm water flowing from the heat exchange unit to a predetermined temperature. A heat exchanging unit including a temperature stabilizing unit that is uniformized and stabilized, wherein the temperature stabilizing unit includes a communication hole that communicates with the heat exchange unit, a lead-out hole, and the communication hole and the lead-out hole. And an inflow passage through which the hot water from the heat exchanging part flows into the communication hole and guides the hot water to the outlet hole, and the temperature stabilizing part is formed in a cylindrical shape, and the inflow flow The path is formed in an arc shape along the circumferential direction on the inner peripheral surface of the temperature stabilizing portion, and the heat exchanging portion is disposed outside the temperature stabilizing portion. Can be provided.
In the first to third aspects, the present invention provides a heat exchange unit including a water channel and a heating unit for heating water passing through the channel, and warm water flowing from the heat exchange unit to a predetermined temperature. A heat exchanging unit including a temperature stabilizing unit that is uniformized and stabilized, wherein the temperature stabilizing unit includes a communication hole that communicates with the heat exchange unit, a lead-out hole, and the communication hole and the lead-out hole. And an inflow passage through which the hot water from the heat exchanging part flows into the communication hole and guides the hot water to the outlet hole, and the temperature stabilizing part is formed in a cylindrical shape, and the inflow flow The path is formed only from an arc-shaped flow path along the inner peripheral surface of the temperature stabilizing portion, and the hot water passes through the inflow flow path from the outlet hole to the inside of the inflow flow path of the temperature stabilizing portion. It is possible to provide a heat exchange unit that flows out to the section.
In the first to fourth aspects, the present invention provides a heat exchange unit including a water channel and heating means for heating the water passing through the channel, and warm water flowing from the heat exchange unit to a predetermined temperature. A heat exchanging unit including a temperature stabilizing unit that is uniformized and stabilized, wherein the temperature stabilizing unit includes a communication hole that communicates with the heat exchange unit, a lead-out hole, and the communication hole and the lead-out hole. And an inflow passage through which the hot water from the heat exchanging part flows into the communication hole and guides the hot water to the outlet hole, and the temperature stabilizing part is formed in a cylindrical shape, and the inflow flow The path is formed in an arc shape along the circumferential direction on the inner peripheral surface of the temperature stabilizing portion, and is further disposed downstream of the inflow channel and detects the temperature of hot water passing through the channel. The temperature detecting means flows hot water only from one side in the width direction of the inflow channel. Are arranged so as to allow, it is possible to provide a heat exchange unit, characterized in that.

  In the present invention, the heat exchange unit may further include a hot water tank unit that supplies hot water (hot water having a uniform and stable temperature) generated in the temperature stabilizing unit to a sanitary washing device.

Further, in the present invention, the heat exchange unit is further provided with a temperature detecting means that is disposed downstream of the inflow channel and detects the temperature of hot water that passes through the channel.
Control means for controlling energization of the heating means based on a detection signal from the temperature detection means can be provided.

  In a second aspect, the present invention provides a sanitary washing apparatus (hereinafter, also referred to as “the sanitary washing apparatus of the present invention”) having the heat exchange unit, that is, the heat exchange unit of the present invention. be able to.

  According to the present invention, in the heat exchange unit, the temperature stabilizing portion is formed in a cylindrical shape. As a result, a member connected to the temperature stabilizing portion (or its connecting portion), in particular, a hot water tank portion provided for supplying hot water generated in this temperature stabilizing portion to the sanitary washing device is also formed in a cylindrical shape. Assembling of the temperature stabilizing portion and the member, particularly the hot water tank portion is simplified, and the cost can be reduced. Further, a general-purpose seal member such as an O-ring can be applied as the seal member provided at the connection portion, and the cost can be further reduced. Further, in the heat exchange unit, the inflow channel is formed in an arc shape along the circumferential direction on the inner peripheral surface of the temperature stabilizing portion. As a result, the hot water flowing into the inflow channel from the heat exchange section is agitated by the turbulent flow or shear flow caused by the collision between the hot water and the hot water and the inner wall of the flow channel, and as a result, the temperature in the hot water is made uniform and stable Achieved. That is, the heat exchange unit of the present invention is inexpensive, and according to the heat exchange unit of the present invention, hot water can be supplied at a uniform and stable temperature.

  A heat exchange unit according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is an external view schematically showing a heat exchange unit according to Embodiment 1 of the present invention. FIG. 2 is a schematic cross-sectional view in the axial direction of the heat exchange section of the heat exchange unit shown in FIG. FIG. 3 is an end view of the temperature stabilizing portion in the heat exchange unit shown in FIG. 1 as viewed from above.

  Referring to FIG. 1, a heat exchange unit 1 according to Embodiment 1 of the present invention includes a heat exchange unit 2, a temperature stabilization unit 3, and a hot water tank unit 4. The heat exchange unit 1 is connected between the water supply pipe and the sanitary washing device.

  Referring to FIG. 2, the heat exchanging unit 2 includes a cylindrical heater 5 and a cylindrical unit 6 as heating means. One end of the open end of the cylindrical portion 6 is provided with a mounting flange 7 so as to close the end. The flow path 8 in the cylindrical portion 6 will be described. Water supplied from one side into the cylinder of the cylindrical heater 5 flows out from the outlet on the other side, and the outer peripheral side of the cylindrical heater 5 (cylinder) and the cylinder. After flowing between the inner peripheral sides of the part 6, it flows into the temperature stabilizing part 3, specifically the inflow channel 9, through the communication hole 10 positioned above the cylindrical heater 5.

  Referring to FIG. 2, the temperature stabilizing unit 3 is formed in a cylindrical shape, and is disposed on the outer periphery of the cylindrical unit 6 so as to be positioned above the heat exchanging unit 2, and on the heat exchanging unit side of the temperature stabilizing unit 3. A partition wall 11 is provided at the end so as to be closed. Further, a connecting flange 12 is formed on the outer periphery of the end portion of the temperature stabilizing portion 3, and the inner wall of the connecting flange 12 is connected to the hot water tank portion 4 via an O-ring 13 that is a seal member. , Grooves are provided. Furthermore, as will be described later, the temperature stabilizing portion 3 is formed with the side wall and the bottom portion of the inflow channel 9. As shown in FIG. 2, the temperature stabilizing portion 3 is formed integrally with the cylindrical portion 6 so as to be positioned above the heat exchanging portion 2 and disposed on the outer periphery of the cylindrical portion 6. May be.

  Referring to FIG. 2, the hot water tank unit 4 includes a first member formed in a cylindrical shape into which the hot water generated in the temperature stabilizing unit 3 is introduced, and a second member that supplies the supplied hot water to the sanitary washing device. It consists of. The first member is a portion (member) connected to the temperature stabilizing portion 3 in the hot water tank portion 4, and is cylindrical so that the lower end thereof is fitted to the temperature stabilizing portion 3 via the O-ring 13. Is formed. That is, the member has a fitting protrusion so that the lower end of the member is fitted to the inner surface of the cylindrical body of the temperature stabilizing portion 3. A connecting flange 14 is formed on the outer periphery of this member.

  The assembly of the temperature stabilizing unit 3 and the hot water tank unit 4 can be performed, for example, as follows through an O-ring 13 that is a seal member. The hot water tank portion 4 has a fitting projection so that the lower end portion of the portion (member) connected to the temperature stabilizing portion 3 is fitted to the inner surface of the cylindrical body of the temperature stabilizing portion 3. Further, a connecting flange 14 is formed on the outer periphery of the end of the hot water tank portion 4 on the side connected to the temperature stabilizing portion 3, and a locking portion 15 is provided on the outer periphery of the connecting flange 14. . Further, a connecting flange 12 is formed on the outer periphery of the end of the temperature stabilizing unit 3 on the side connected to the hot water tank unit 4, and the engaging portion 15 is held on the outer periphery of the connecting flange 12. A sleeve 16 is provided. That is, the temperature stabilizing unit 3 and the hot water tank unit 4 are detachably connected to the temperature stabilizing unit 3 and are slidable and rotatable. Therefore, since the connection between the temperature stabilizing portion and the hot water tank portion is based on a simple cylindrical fitting or engagement, the assembly is easy and the sealing member is not damaged during the fitting. The temperature stabilizing portion and the hot water tank portion may be screwed and fixed at a predetermined position of the connecting flange after being engaged or fitted.

  In the present invention, since the connection between the temperature stabilizing portion and the hot water tank portion is based on a simple cylindrical fitting or engagement, a seal member (packing) used to connect the temperature stabilizing portion and the hot water tank portion. For example, an O-ring that is a general-purpose seal member can be used. Therefore, since a conventional seal member having a unique shape is not required, the cost can be reduced, the assembly of the seal member is easy, and water leakage due to a problem or the like when the seal member is fitted can be suppressed. Furthermore, when a shaft seal is used instead of a face seal, assembly is further facilitated, and water leakage such as when a seal member is fitted can be further suppressed or prevented.

  The inflow channel 9 is configured such that the warm water tank portion 4 forms the upper portion (lid portion) and the temperature stabilizing portion 3 forms the other portions (side wall and bottom portion). Referring to FIG. 3, the inflow channel 9 is formed in an arc shape along the circumferential direction on the inner peripheral surface of the temperature stabilizing portion 3. In the inflow channel 9, a communication hole 10 is provided at the bottom of the upstream side so that the temperature stabilizing unit 3 and the heat exchange unit 2 communicate with each other, while a hot water tank is provided on the downstream side wall. A lead-out hole 17 is provided in the portion 4 so that the hot water is led out. With the inflow channel 9 having such a configuration, the hot water flowing in from the heat exchanging unit 2 is stirred by the turbulent flow or shear flow generated by the collision between the hot water and the hot water and the inner wall of the channel while flowing through the inflow channel 9. As a result, it becomes possible to supply hot water at a uniform and stable temperature. For example, if the flow rate of water is 0.5 L / min or less and the outlet hole 17 in the inflow channel 9 is disposed at a position approximately 180 ° or more away from the position of the communication hole 10, a uniform and stable temperature is obtained. It becomes possible to supply hot water. In addition, since the shape of the inflow channel is arc-shaped and simple, it is easy to ensure the mold accuracy and reduce the cost, and it is easy to inspect and measure parts. Easy to find quality defects.

  In the present invention, the heat exchanging unit further includes a temperature detecting means for detecting a temperature of hot water passing through the inflow channel, and an energization of the heating means based on a detection signal from the temperature detecting means. And a control means for controlling. Referring to FIG. 3, temperature detecting means (temperature sensor) 19 for detecting the temperature of hot water is provided on the inflow channel 9, specifically on the downstream side thereof. On the other hand, although not shown, control means for controlling energization of the cylindrical heater is provided. Therefore, the temperature is detected by the temperature detection means 19, and the control means controls the energization of the cylindrical heater based on the detection signal so that the sanitary washing device is supplied with a uniform and stable warm water at a desired temperature. .

  In the present invention, the hot water tank unit is further provided with a float switch as a means for detecting the presence or absence of water, and a means for controlling heating based on a detection signal from the float switch is provided. Can also be controlled. Thereby, it is possible to prevent emptying.

  The method for generating hot water by the heat exchange unit according to the first embodiment of the present invention described above will be described with reference to FIGS. 2 and 3 in particular.

  In the heat exchange unit according to Embodiment 1 of the present invention, water is heated by flowing through or outside the cylindrical portion 6 including the cylindrical heater 5 of the heat exchange portion 2 to become hot water. This hot water passes through the communication hole 10 and flows into the inflow channel 9, but is stirred by turbulent flow or shear flow caused by the collision between the hot water and the hot water and the inner wall of the flow channel. It becomes hot water and is led to the hot water tank section 4.

  According to the present invention, in particular, a heat exchange unit for a sanitary washing apparatus that supplies hot water for local washing can be provided. Therefore, the present invention is extremely useful industrially.

It is the external view which showed typically the heat exchange unit which concerns on Embodiment 1 of this invention. It is a cross-sectional schematic diagram of the heat exchange part axial direction of the heat exchange unit shown in FIG. Water or hot water flows in the direction of the arrow. It is the end elevation which looked at the temperature stabilization part in the heat exchange unit shown in FIG. 1 from upper direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat exchange unit 2 Heat exchange part 3 Temperature stabilization part 4 Hot water tank part 5 Heating means (cylindrical heater)
6 Cylindrical portion 7 Mounting flange 8 Channel 9 Inflow channel 10 Connecting hole 11 Bulkhead 12 Connecting flange 13 O-ring 14 Connecting flange 15 Locking portion 16 Sleeve 17 Lead-out hole 18 Channel side wall 19 Temperature detecting means (temperature sensor)

Claims (7)

A heat exchange section comprising a water channel and heating means for heating the water passing through the channel;
A temperature stabilizing unit that equalizes and stabilizes the warm water flowing in from the heat exchange unit to a predetermined temperature;
In a heat exchange unit comprising:
The temperature stabilizing part is disposed between a communication hole communicating with the heat exchange part, a lead-out hole, and the communication hole and the lead-out hole, and hot water from the heat exchange part flows into the communication hole. An inflow channel for guiding hot water to the outlet hole ,
The temperature stabilizing part is formed in a cylindrical shape,
The inflow channel is formed only from an arc-shaped channel along the inner peripheral surface of the temperature stabilizing portion.
A heat exchange unit characterized by that. A heat exchange section comprising a water channel and heating means for heating the water passing through the channel;
A temperature stabilizing unit that equalizes and stabilizes the warm water flowing in from the heat exchange unit to a predetermined temperature;
In a heat exchange unit comprising:
The temperature stabilizing part is disposed between a communication hole communicating with the heat exchange part, a lead-out hole, and the communication hole and the lead-out hole, and hot water from the heat exchange part flows into the communication hole. An inflow channel for guiding hot water to the outlet hole ,
The temperature stabilizing part is formed in a cylindrical shape,
The inflow channel is formed in an arc shape along the circumferential direction on the inner peripheral surface of the temperature stabilizing portion,
The heat exchange part is disposed outside the temperature stabilizing part,
A heat exchange unit characterized by that. A heat exchange section comprising a water channel and heating means for heating the water passing through the channel;
A temperature stabilizing unit that equalizes and stabilizes the warm water flowing in from the heat exchange unit to a predetermined temperature;
In a heat exchange unit comprising:
The temperature stabilizing part is disposed between a communication hole communicating with the heat exchange part, a lead-out hole, and the communication hole and the lead-out hole, and hot water from the heat exchange part flows into the communication hole. An inflow channel for guiding hot water to the outlet hole ,
The temperature stabilizing part is formed in a cylindrical shape,
The inflow channel is formed only from an arc-shaped channel along the inner peripheral surface of the temperature stabilizing portion,
Warm water flows out from the outlet hole to the inner side of the inlet channel of the temperature stabilizing unit through the inlet channel,
A heat exchange unit characterized by that. A heat exchange section comprising a water channel and heating means for heating the water passing through the channel;
A temperature stabilizing unit that equalizes and stabilizes the warm water flowing in from the heat exchange unit to a predetermined temperature;
In a heat exchange unit comprising:
The temperature stabilizing part is disposed between a communication hole communicating with the heat exchange part, a lead-out hole, and the communication hole and the lead-out hole, and hot water from the heat exchange part flows into the communication hole. An inflow channel for guiding hot water to the outlet hole ,
The temperature stabilizing part is formed in a cylindrical shape,
The inflow channel is formed in an arc shape along the circumferential direction on the inner peripheral surface of the temperature stabilizing portion,
Furthermore, it has a temperature detection means that is disposed downstream of the inflow channel and detects the temperature of hot water that passes through the channel.
The temperature detection means is arranged so that hot water can flow out only from one side in the width direction of the inflow channel,
A heat exchange unit characterized by that. Furthermore, a temperature detection means that is disposed downstream of the inflow channel and detects the temperature of hot water passing through the channel,
Control means for controlling energization of the heating means based on a detection signal from the temperature detection means;
The heat exchange unit according to any one of claims 1 to 3.   Furthermore, the heat exchange unit as described in any one of Claims 1-5 provided with the warm water tank which supplies the warm water produced in the said temperature stabilization part to a sanitary washing apparatus.   A sanitary washing apparatus comprising the heat exchange unit according to any one of claims 1 to 6.

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