CN211575513U

CN211575513U - PTC water heater and hot water system thereof

Info

Publication number: CN211575513U
Application number: CN201922352417.5U
Authority: CN
Inventors: 林章程
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-25
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a PTC water heater and hot water system thereof. Comprises a base shell and a PTC heating component; the base shell is internally provided with a heating assembly accommodating groove, the base shell is further provided with a water inlet pipe used for communicating the lower end of the heating assembly accommodating groove and the outside, the base shell is further provided with a water outlet pipe used for communicating the upper end of the heating assembly accommodating groove and the outside, the two ends of the PTC heating assembly are arranged on the base shell, the middle of the PTC heating assembly is located in the heating assembly accommodating groove, and a water passing channel surrounding the periphery of the outer wall of the PTC heating assembly is formed between the PTC heating assembly and the heating assembly accommodating groove. The utility model discloses structurally improve, the inside of base shell can form and encircle the water channel that PTC heating element set up all around, guarantees to be heated liquid ability and PTC heating element's surface and contacts completely, and heating efficiency is high.

Description

PTC water heater and hot water system thereof

Technical Field

The utility model relates to a water heater is a PTC water heater and hot water system thereof very much.

Background

The PTC water heater is an automatic constant temperature and electricity saving electric water heater. The water heater has the outstanding characteristic of safety performance, the surface of the water heater such as an electric heating pipe cannot be red under any application condition, and the water heater is widely applied to the fields of pools, foot baths and the like. The existing PTC water heater is guaranteed by increasing the number of heating assemblies in the design of improving the heating efficiency, so that the integral structure of the water heater is complicated, and the consumption of electric quantity is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the water heater is structurally improved, the water passing channel arranged around the periphery of the PTC heating assembly can be formed in the base shell, the heated liquid can be ensured to be in complete contact with the surface of the PTC heating assembly, and the heating efficiency is high.

The utility model discloses a following technical scheme realizes:

the first scheme is as follows:

a PTC water heater is characterized in that: comprises a base shell and a PTC heating component; the base shell is internally provided with a heating assembly accommodating groove, the base shell is further provided with a water inlet pipe used for communicating the lower end of the heating assembly accommodating groove and the outside, the base shell is further provided with a water outlet pipe used for communicating the upper end of the heating assembly accommodating groove and the outside, the two ends of the PTC heating assembly are arranged on the base shell, the middle of the PTC heating assembly is located in the heating assembly accommodating groove, and a water passing channel surrounding the periphery of the outer wall of the PTC heating assembly is formed between the PTC heating assembly and the heating assembly accommodating groove.

Preferably, the inner peripheral wall of the heating assembly accommodating groove is provided with a thread groove spirally arranged from bottom to top.

Preferably, the base shell comprises a water passing pipeline and a water passing joint; the water passing pipeline comprises a pipe body, an upper flange annularly arranged on the periphery of the upper end of the pipe body and a lower flange annularly arranged on the periphery of the lower end of the pipe body; the water passing joint comprises an annular joint flange fixedly connected to the lower end face of the lower flange of the water passing pipeline and a matching slot hole which is arranged in the joint flange and the shape and size of which are matched with the shape and size of the peripheral wall of the PTC heating assembly; the periphery ring in PTC heating element's upper end is equipped with the heating element flange, heating element flange fixed connection is on the last flange of water pipe, and the periphery wall sealing installation of PTC heating element lower extreme is in the cooperation slotted hole.

Preferably, the water outlet pipe is fixedly connected to the opening of the side wall of the pipe body and positioned between the upper flange and the lower flange, the water inlet pipe is fixedly connected to the opening of the side wall of the joint flange of the water passing joint, and the matched slotted hole is positioned below the water inlet pipe;

the PTC water heater also comprises a first sealing ring, a second sealing ring and a third sealing ring; the water passing joint comprises a base shell, a water passing joint body, a first sealing ring, a second sealing ring, a third sealing ring and a joint pressing block, wherein the first sealing ring is arranged between an upper flange and a heating assembly flange in a sealing mode, the second sealing ring is arranged between a lower flange and a joint flange in a sealing mode, the water passing joint body further comprises a sealing groove which is coaxially arranged on the side wall of a matched slotted hole in a surrounding mode and extends along the radial direction far away from the axis, the third sealing ring is arranged in the sealing groove and is sleeved on the periphery of the PTC heating device, and the base shell further.

Preferably, the base shell comprises a water passing pipe; the water passing pipeline comprises a pipe body with an opening at the upper end and a sealed lower end, and an upper flange annularly arranged on the periphery of the upper end of the pipe body; the utility model discloses a PTC heating element's upper end periphery ring is equipped with the heating element flange, heating element flange fixed connection is on the last flange of pipeline, and PTC heating element's lower extreme extends to in the inside cavity of body, the equal fixed connection of inlet tube and outlet pipe is on the lateral wall trompil of body.

Preferably, the PTC heating assembly comprises an outer metal shell, more than one PTC heating device arranged in the outer metal shell, and a support member arranged in the outer metal shell and used for pressing the PTC heating device so that the PTC heating device is tightly attached to the inner side wall of the outer metal shell;

each PTC heating device comprises an inner-layer metal shell tightly attached between the inner side wall of the outer-layer metal shell and the outer side wall of the supporting piece, and more than one PTC heating element which is arranged in the inner-layer metal shell in a close fit mode and used for generating heat, each PTC heating element comprises two electrode plates, a plurality of heating ceramic plates which are clamped between the two electrode plates and are closely arranged along the length direction of the electrode plates, a first insulating layer which is coated on the periphery of the electrode plates, and two power supply leads which are respectively led out of the two electrode plates to the outside, and the wall thickness of the inner-layer metal shell is larger than that of the first insulating layer.

Preferably, the PTC heating assembly further comprises a second insulating layer disposed between the outer side wall of the inner metal shell and the inner side wall of the outer metal shell; the number of layers of the first insulating layer and the second insulating layer is more than one, and the thickness of the second insulating layer is smaller than the wall thickness of the outer metal shell.

Preferably, both ends of the support member are exposed out of the base shell, and a cavity extending along the length direction of the support member and having two open ends is formed inside the support member, so that liquid can flow into the cavity to be heated and flow out of the cavity.

Preferably, the PTC heating assembly further comprises sealing members respectively disposed at both ends of the outer metal shell; the sealing elements comprise end sealing elements arranged at the upper end of the inner metal shell and tail sealing elements arranged at the lower end of the inner metal shell, when the number of the end sealing elements is more than two, at least one end sealing element is arranged in the inner metal shell and is positioned at a position close to an opening at the upper end of the inner metal shell, and at least one end sealing element is arranged above the opening at the upper end of the inner metal shell and is positioned between the inner side wall of the outer metal shell and the outer side wall of the supporting piece.

Preferably, the PTC heating assembly further comprises two positioning silicone members disposed below the tail seal and above the end seal respectively and between the inner side wall of the outer metal shell and the outer side wall of the support member; and a sealing partition plate for separating is arranged between two adjacent sealing pieces at the same end.

Scheme II:

the utility model provides a PTC water heater's of application scheme one hot-water heating system which characterized in that: the water tank is filled with water, and the circulating water pump is connected with the water tank; the PTC water heater is fixedly installed outside the water tank, the water outlet end of the circulating water pump is connected with the water inlet pipe of the PTC water heater and continuously supplies water to the PTC water heater, and the water outlet pipe of the PTC water heater is connected with the water tank and reflows hot water.

Compared with the prior art, the utility model has the advantages that:

1. the utility model provides a PTC water heater and hot water system thereof, this water heater structurally improves, and the inside of base shell can form the water passing channel who encircles PTC heating element and set up all around, guarantees to be heated liquid physical stamina and PTC heating element's surface complete contact, and heating efficiency is high.

2. The utility model discloses a be equipped with the thread groove in the heating element storage tank, can control rivers and advance along PTC heating element surface spiral, air in the discharge water channel effectively, heating efficiency further improves.

3. The utility model provides a base shell is formed by connecting water pipe and water passing connection, simple structure and easy dismounting

4. The utility model discloses be equipped with the inlayer metal casing among the well PTC heating element, when support piece impressed in the outer metal casing, the first insulation layer on the protection heating element that the inlayer metal casing can be fine was not destroyed, and the security performance is good, and compresses tightly through support piece between inlayer metal casing and the outer metal casing, this PTC heating element's heat conductivility is good, heat conduction efficiency is high.

5. The utility model provides an outside the upper and lower both ends homogeneous phase of support piece exposes the basic shell, and this support piece's inside is equipped with along its length direction extension and both ends open-ended cavity to outside being heated and flowing out the cavity in making liquid can flow into the cavity, further improve the heating efficiency of this heater.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of a first embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a vertical cross-sectional view of a first embodiment of the present invention;

FIG. 4 is a schematic view of the PTC heating assembly of FIG. 3;

fig. 5 is an exploded view of a PTC heating assembly according to a first embodiment of the present invention;

fig. 6 is a vertical sectional view of a second embodiment of the present invention;

FIG. 7 is a schematic view of the PTC heating assembly of FIG. 6;

fig. 8 is a vertical sectional view of a third embodiment of the present invention;

fig. 9 is a three-dimensional cutting schematic diagram of a water passing pipeline in the third embodiment of the present invention;

fig. 10 is a schematic diagram illustrating a state of the fourth embodiment of the present invention.

Description of reference numerals: 1-base shell, 11-heating component containing groove, 111-thread groove, 12-water inlet pipe, 13-water outlet pipe, 14-water passing pipe, 141-pipe body, 142-upper flange, 143-lower flange, 15-water passing joint, 151-joint flange, 152-matching slotted hole, 153-sealing groove, 16-joint pressing block, 2-PTC heating component, 21-outer layer metal shell, 22-PTC heating device, 221-inner layer metal shell, 222-PTC heating element, 2221-electrode sheet, 2222-heating ceramic sheet, 2223-first insulating layer, 2224-power supply lead, 23-support member, 231-cavity, 24-second insulating layer, 25-sealing member, 251-end sealing member, 252-tail sealing member, 26-a positioning silica gel piece, 27-a sealing partition plate, 28-a heating assembly flange, 3-a first sealing ring, 4-a second sealing ring, 5-a third sealing ring, 6-a water tank, 7-a circulating water pump, 71-a water outlet end and an A-water passing channel.

Detailed Description

The invention is explained in detail below with reference to the accompanying drawings:

the first embodiment is as follows:

as shown in fig. 1 to 5, a PTC water heater is characterized in that: comprises a base shell 1 and a PTC heating component 2; be provided with heating element storage tank 11 in the base shell 1, still be provided with on the base shell 1 and be used for communicateing inlet tube 12 between heating element storage tank 11 lower extreme and the outside, and still be provided with on the base shell 1 and be used for communicateing outlet pipe 13 between heating element storage tank 11 upper end and the outside, PTC heating element 2's both ends are installed on base shell 1 and the middle part is located heating element storage tank 11 for form between PTC heating element 2 and the heating element storage tank 11 and encircle the water channel A that PTC heating element 2 outer wall set up all around.

Preferably, the base housing 1 comprises a water passing pipe 14 and a water passing joint 15; the water passing pipe 14 comprises a pipe body 141, an upper flange 142 annularly arranged on the periphery of the upper end of the pipe body 141, and a lower flange 143 annularly arranged on the periphery of the lower end of the pipe body 141; the water passing joint 15 comprises an annular joint flange 151 fixedly connected to the lower end face of the lower flange 143 of the water passing pipe 14, and a matching slot hole 152 which is arranged in the joint flange 151 and has a shape and size matched with the shape and size of the outer peripheral wall of the PTC heating assembly 2; the upper end of the PTC heating block 2 is surrounded by a heating block flange 28, the heating block flange 28 is fixedly connected to the upper flange 142 of the water pipe 14, and the outer peripheral wall of the lower end of the PTC heating block 2 is sealingly fitted in the fitting groove hole 152. A mounting surface is also provided on the upper surface of the heating assembly flange 28 to facilitate the mounting of the temperature sensor. Wherein the water passing pipe 14 and the water passing joint 15 can be formed by injection molding.

Preferably, the outlet pipe 13 is fixedly connected to the side wall opening of the pipe body 141 and located between the upper flange 142 and the lower flange 143, the inlet pipe 12 is fixedly connected to the side wall opening of the connector flange 151 of the water passing connector 15, and the matching slot 152 is located below the inlet pipe 12, wherein the inlet and outlet pipes can be used interchangeably according to specific use conditions;

the PTC water heater also comprises a first sealing ring 3, a second sealing ring 4 and a third sealing ring 5; the first sealing ring 3 is arranged between the upper flange 142 and the heating assembly flange 28 in a sealing mode, the second sealing ring 4 is arranged between the lower flange 143 and the joint flange 151 in a sealing mode, the water passing joint 15 further comprises a sealing groove 153 which is coaxially arranged on the side wall of the matching groove hole 152 in a surrounding mode and extends in the radial direction far away from the axis, the third sealing ring 5 is arranged in the sealing groove 153 and sleeved on the periphery of the PTC heating device 22, and the base shell 1 further comprises a joint pressing block 16 which is connected to the water passing joint 15 in a threaded mode and presses the bottom of the third sealing ring 5 upwards.

Preferably, the PTC heating assembly 2 comprises an outer metal shell 21, one or more PTC heating devices 22 disposed in the outer metal shell 21, and a support 23 disposed in the outer metal shell 21 for pressing the PTC heating devices 22 so that the PTC heating devices 22 are attached to the inner side wall of the outer metal shell 21;

each PTC heating device 22 includes an inner metal shell 221 tightly attached between the inner side wall of the outer metal shell 21 and the outer side wall of the support 23, and more than one PTC heating element 222 arranged in the inner metal shell 221 in a close fit manner for generating heat, each PTC heating element 222 includes two electrode sheets 2221, a plurality of heating ceramic sheets 2222 clamped between the two electrode sheets 2221 and tightly arranged along the length direction of the electrode sheets 2221, a first insulating layer 2223 coated around the electrode sheets 2221, and two power supply leads 2224 respectively led out from the two electrode sheets 2221 to the outside, and the wall thickness of the inner metal shell 221 is greater than the thickness of the first insulating layer 2223.

Preferably, the PTC heating assembly 2 further comprises a second insulating layer 24 disposed between the outer sidewall of the inner metal shell 221 and the inner sidewall of the outer metal shell 21; the number of the first insulating layer 2223 and the second insulating layer 24 is more than one, and the thickness of the second insulating layer 24 is smaller than the wall thickness of the outer metal shell 21.

Preferably, the PTC heating assembly 2 further comprises sealing members 25 respectively disposed at both ends of the outer metal shell 21; the sealing member 25 includes end sealing members 251 disposed at the upper end of the inner metal shell 221 and tail sealing members 252 disposed at the lower end of the inner metal shell 221, when the number of the end sealing members 251 is more than two, at least one of the end sealing members 251 is disposed in the inner metal shell 221 and located at a position close to the upper end opening of the inner metal shell 221, and at least one of the end sealing members 251 is disposed above the upper end opening of the inner metal shell 221 and located between the inner sidewall of the outer metal shell 21 and the outer sidewall of the supporting member 23.

Preferably, the PTC heating assembly 2 further comprises two positioning silicone members 26 respectively disposed below the tail seal 252 and above the end seal 251 and between the inner side wall of the outer metal shell 21 and the outer side wall of the support member 23; a sealing partition 27 for separation is provided between two adjacent sealing members 25 at the same end.

Example two:

as shown in fig. 6 to 7, the present embodiment is different from the first embodiment in that: preferably, both upper and lower ends of the supporting member 23 are exposed out of the base housing 1, and a cavity 231 extending along the length direction of the supporting member 23 and having two open ends is provided inside the supporting member 23, so that the liquid can flow into the cavity 231, be heated and flow out of the cavity 231. Wherein, the water inlet end of the supporting piece 23 can be communicated with the water inlet pipe 12, and the water outlet end of the supporting piece 23 can be communicated with the water outlet pipe 13.

Example three:

the difference between this embodiment and the second embodiment is: preferably, the inner peripheral wall of the heating element receiving groove 11 is provided with a thread groove 111 spirally arranged from bottom to top.

Example four:

as shown in fig. 10, a hot water system using the PTC water heater according to any one of the first to third embodiments is characterized in that: the water-saving device also comprises a water tank 6 for injecting water and a circulating water pump 7 connected with the water tank 6; the PTC water heater is fixedly arranged outside the water tank 6, the water outlet end 71 of the circulating water pump 7 is connected with the water inlet pipe 12 of the PTC water heater and continuously supplies water to the PTC water heater, and the water outlet pipe 13 of the PTC water heater is connected with the water tank 6 and reflows hot water.

Example five:

a PTC water heater is characterized in that: comprises a base shell 1 and a PTC heating component 2; be provided with heating element storage tank 11 in the base shell 1, still be provided with on the base shell 1 and be used for communicateing inlet tube 12 between heating element storage tank 11 lower extreme and the outside, and still be provided with on the base shell 1 and be used for communicateing outlet pipe 13 between heating element storage tank 11 upper end and the outside, PTC heating element 2's both ends are installed on base shell 1 and the middle part is located heating element storage tank 11 for form between PTC heating element 2 and the heating element storage tank 11 and encircle the water channel A that PTC heating element 2 outer wall set up all around.

Preferably, the base housing 1 comprises a water passage pipe; the water passing pipeline comprises a pipe body with an opening at the upper end and a sealed lower end, and an upper flange annularly arranged on the periphery of the upper end of the pipe body; the periphery of the upper end of the PTC heating assembly 2 is annularly provided with a heating assembly flange 28, the heating assembly flange 28 is fixedly connected to the upper flange of the water passing pipeline, the lower end of the PTC heating assembly 2 extends into the inner cavity of the pipe body, and the water inlet pipe 12 and the water outlet pipe 13 are both fixedly connected to the side wall opening of the pipe body.

While the present invention has been shown and described with reference to particular embodiments and alternatives thereof, it will be understood that various changes and modifications can be made without departing from the spirit and scope of the invention. It is understood, therefore, that the invention is not to be limited, except as by the appended claims and their equivalents.

Claims

1. A PTC water heater is characterized in that: comprises a base shell (1) and a PTC heating component (2); be provided with heating element storage tank (11) in base shell (1), still be provided with inlet tube (12) that are used for communicateing between heating element storage tank (11) lower extreme and the outside on base shell (1), and still be provided with outlet pipe (13) that are used for communicateing between heating element storage tank (11) upper end and the outside on base shell (1), install on base shell (1) and middle part is located heating element storage tank (11) at the both ends of PTC heating element (2) for form between PTC heating element (2) and heating element storage tank (11) and encircle water channel (A) that PTC heating element (2) outer wall set up all around.

2. A PTC water heater according to claim 1, wherein: the inner peripheral wall of the heating component accommodating groove (11) is provided with a thread groove (111) which is spirally arranged from bottom to top.

3. A PTC water heater according to claim 1, wherein: the base shell (1) comprises a water passing pipeline (14) and a water passing joint (15); the water passing pipe (14) comprises a pipe body (141), an upper flange (142) annularly arranged on the periphery of the upper end of the pipe body (141) and a lower flange (143) annularly arranged on the periphery of the lower end of the pipe body (141); the water passing joint (15) comprises an annular joint flange (151) fixedly connected to the lower end face of a lower flange (143) of the water passing pipe (14) and a matching groove hole (152) which is arranged in the joint flange (151) and is matched with the shape and size of the outer peripheral wall of the PTC heating component (2); the periphery ring in the upper end of PTC heating element (2) is equipped with heating element flange (28), heating element flange (28) fixed connection is on last flange (142) of water pipe (14), and the periphery wall sealing installation of PTC heating element (2) lower extreme is in cooperation slotted hole (152).

4. A PTC water heater according to claim 3, wherein: the water outlet pipe (13) is fixedly connected to an opening on the side wall of the pipe body (141) and positioned between the upper flange (142) and the lower flange (143), the water inlet pipe (12) is fixedly connected to an opening on the side wall of a joint flange (151) of the water passing joint (15), and the matching slotted hole (152) is positioned below the water inlet pipe (12);

the PTC water heater also comprises a first sealing ring (3), a second sealing ring (4) and a third sealing ring (5); the water heater is characterized in that the first sealing ring (3) is arranged between the upper flange (142) and the heating assembly flange (28) in a sealing mode, the second sealing ring (4) is arranged between the lower flange (143) and the joint flange (151) in a sealing mode, the water passing joint (15) further comprises a sealing groove (153) which is coaxially arranged on the side wall of the matched slotted hole (152) in a surrounding mode and extends along the radial direction far away from the axis, the third sealing ring (5) is arranged in the sealing groove (153) and sleeved on the periphery of the PTC heating device (22), and the base shell (1) further comprises a joint pressing block (16) which is in threaded connection with the water passing joint (15) and presses the bottom of the third sealing ring (5) upwards.

5. A PTC water heater according to claim 1, wherein: the base shell (1) comprises a water passing pipeline; the water passing pipeline comprises a pipe body with an opening at the upper end and a sealed lower end, and an upper flange annularly arranged on the periphery of the upper end of the pipe body; the upper end periphery ring of PTC heating element (2) is equipped with heating element flange (28), heating element flange (28) fixed connection is on the last flange of water pipe, and in the lower extreme of PTC heating element (2) extended to the inside cavity of body, the equal fixed connection of inlet tube (12) and outlet pipe (13) was on the lateral wall trompil of body.

6. A PTC water heater according to claim 1, wherein: the PTC heating assembly (2) comprises an outer-layer metal shell (21), more than one PTC heating device (22) arranged in the outer-layer metal shell (21), and a supporting piece (23) which is arranged in the outer-layer metal shell (21) and used for pressing the PTC heating device (22) to enable the PTC heating device (22) to be attached to the inner side wall of the outer-layer metal shell (21);

each PTC heating device (22) comprises an inner metal shell (221) tightly attached between the inner side wall of the outer metal shell (21) and the outer side wall of the support piece (23), more than one PTC heating element (222) which is arranged in the inner metal shell (221) in a tight fit mode and used for heating, each PTC heating element (222) comprises two electrode slices (2221), a plurality of heating ceramic slices (2222) which are clamped between the two electrode slices (2221) and are tightly arranged along the length direction of the electrode slices (2221), a first insulating layer (2223) which is wrapped around the electrode slices (2221), and two power supply leads (2224) which are respectively led out to the outside from the two electrode slices (2221), and the wall thickness of the inner metal shell (221) is larger than that of the first insulating layer (2223).

7. A PTC water heater according to claim 6, wherein: the PTC heating assembly (2) further comprises a second insulating layer (24) arranged between the outer side wall of the inner metal shell (221) and the inner side wall of the outer metal shell (21); the number of layers of the first insulating layer (2223) and the second insulating layer (24) is more than one, and the thickness of the second insulating layer (24) is smaller than the wall thickness of the outer metal shell (21).

8. A PTC water heater according to claim 6, wherein: the upper end and the lower end of the supporting piece (23) are exposed out of the base shell (1), and a cavity (231) which extends along the length direction of the supporting piece and is open at two ends is arranged in the supporting piece (23), so that liquid can flow into the cavity (231), be heated and flow out of the cavity (231).

9. A PTC water heater according to claim 6, wherein: the PTC heating assembly (2) further comprises sealing pieces (25) which are respectively arranged at two ends of the outer layer metal shell (21); the sealing element (25) comprises end sealing elements (251) arranged at the upper end of the inner-layer metal shell (221) and tail sealing elements (252) arranged at the lower end of the inner-layer metal shell (221), when the number of the end sealing elements (251) is more than two, at least one end sealing element (251) is arranged in the inner-layer metal shell (221) and is positioned at a position close to an opening at the upper end of the inner-layer metal shell (221), and at least one end sealing element (251) is arranged above the opening at the upper end of the inner-layer metal shell (221) and is positioned between the inner side wall of the outer-layer metal shell (21) and the outer side wall of the supporting element (.

10. A hot water system using the PTC water heater according to any one of claims 1 to 9, wherein: the water-saving device also comprises a water tank (6) for injecting water and a circulating water pump (7) connected with the water tank (6); the PTC water heater is fixedly installed outside the water tank (6), the water outlet end (71) of the circulating water pump (7) is connected with the water inlet pipe (12) of the PTC water heater and continuously supplies water to the water inlet pipe, and the water outlet pipe (13) of the PTC water heater is connected with the water tank (6) and reflows hot water.