CN114383319B - Energy storage recovery type heat preservation device and hot water liquid outlet system - Google Patents

Abstract

The invention belongs to the technical field of domestic water, and particularly relates to an energy storage recovery type heat preservation device and a hot water discharging system. The hot water goes out liquid system and includes water heater and energy storage recovery formula heat preservation device, and this energy storage recovery formula heat preservation device includes: the thermos bottle is provided with a liquid inlet channel, a liquid outlet channel and a heat preservation inner cavity; the inner cavity dividing unit is provided with a piston movably arranged in the heat-preservation inner cavity, the piston divides the heat-preservation inner cavity into a cold water cavity and a hot water cavity, the liquid inlet channel is communicated with the cold water cavity, and the hot water cavity is communicated with the liquid outlet channel; the switching unit is provided with a switching channel for communicating the liquid inlet channel and the liquid outlet channel and a switching control mechanism for controlling the switching channel to be switched on or switched off; and the backflow unit is provided with a backflow channel for communicating the hot water cavity with the inlet of the water heater and a backflow control mechanism for controlling the conduction or the closing of the backflow channel. The invention has the advantages of simple structure, energy saving, environmental protection and quick hot water discharge.

Description

Energy storage recovery type heat preservation device and hot water liquid outlet system

Technical Field

The invention belongs to the technical field of domestic water, and particularly relates to an energy storage recovery type heat preservation device and a hot water discharging system.

Background

General gas heater belongs to hot type water heater, because the earlier stage heating cold water needs tens seconds's time, leads to just beginning gas heater's hot water export can discharge a certain amount of cold water, and under the general condition, the user can directly be discharged, then waits for hot water to come out, uses again, and this has just caused certain water waste.

Secondly, before the gas water heater is closed, a certain amount of hot water can be retained in the gas water heater, and if the next use time interval is longer, the hot water can be slowly cooled, so that certain energy waste is caused.

In addition, for service places such as hotels, the problem that hot water is slow to flow out when a gas water heater is used is not favorable for improving the satisfaction degree of customers.

Disclosure of Invention

The invention aims to provide an energy storage recovery type heat preservation device and a hot water outlet system, which are simple in structure, energy-saving, environment-friendly and capable of quickly discharging hot water.

The purpose of the invention is realized as follows:

an energy storage recovery type heat preservation device is used for being installed between a water heater inlet and a water heater outlet of a water heater; the method comprises the following steps:

the thermos bottle is provided with a liquid inlet channel for connecting the outlet of the water heater, a liquid outlet channel for connecting external equipment and a heat preservation inner cavity for accommodating liquid;

the inner cavity dividing unit is provided with a piston movably arranged in the heat-preservation inner cavity, the piston divides the heat-preservation inner cavity into a cold water cavity and a hot water cavity, the liquid inlet channel is communicated with the cold water cavity, and the hot water cavity is communicated with the liquid outlet channel;

the switching unit is provided with a switching channel for communicating the liquid inlet channel with the liquid outlet channel and a switching control mechanism for controlling the switching channel to be switched on or switched off; and

and the backflow unit is provided with a backflow channel for communicating the hot water cavity with the inlet of the water heater and a backflow control mechanism for controlling the conduction or the closing of the backflow channel.

Preferably, the lumen dividing unit further comprises a piston resetting member for resetting the piston, or/and a reflux pump is arranged on the reflux channel.

Preferably, the vacuum flask comprises:

the bottle body is provided with the heat preservation inner cavity and an installation opening communicated with the cold water cavity;

the bottle joint is provided with a joint liquid inlet end used for being connected with an outlet of the water heater, a joint liquid outlet end used for being connected with external equipment and a joint mounting end connected with the mounting port, the joint mounting end is provided with an outer mounting part and an inner mounting part, and a gap between the outer mounting part and the inner mounting part is communicated with the joint liquid inlet end and is provided with the liquid inlet channel; and

and one end of the inner pipe is arranged in the inner mounting part, and the other end of the inner pipe penetrates through the piston and extends into the hot water cavity, so that the liquid outlet channel is formed among the inner pipe, the inner mounting part and the joint liquid outlet end.

Preferably, the switching unit further comprises a switching tube arranged at the inner mounting part, and the inner end of the switching tube passes through the central hole of the piston and extends into the hot water cavity;

in addition, the switching pipe is sleeved on the outer side of the inner pipe, a switching channel is formed between the switching pipe and the inner pipe, and the switching channel is communicated with the liquid outlet channel through a hot water cavity.

Preferably, the inner mounting part is provided with a first switching port, and the switching pipe is movably arranged outside the first switching port and controls the first switching port to be opened or closed;

the switching control mechanism comprises a switching bracket arranged at the inner end of the switching tube and a first resetting piece for resetting the switching tube;

the piston is movably arranged outside the switching tube and can drive the switching tube to move through the switching bracket, so that the first switching port is opened.

Preferably, the switching bracket is provided with a bracket main body part provided with a bracket mounting hole and a bracket linkage part used for driving the piston, the bracket main body part is fixed on the inner end inner wall of the switching pipe and movably mounted on the inner pipe through the bracket mounting hole, and the bracket main body part is provided with a transition channel used for communicating the switching channel and the hot water cavity;

the switching control mechanism further comprises a first fixed sleeve fixed on the inner tube, and the first reset piece is arranged between the first fixed sleeve and the switching support.

Preferably, the outer end of the switching tube is provided with a second switching port communicated with the switching channel;

the switching control mechanism comprises a sealing element for sealing/conducting a second switching port, a second resetting element for resetting the sealing element and a sealing connecting element for connecting the sealing element and the piston;

when the piston moves to a preset position, the sealing piece is driven by the sealing connecting piece to open the second switching port, and the switching channel is conducted.

Preferably, the backflow control mechanism comprises a three-way valve body and a valve core assembly, the three-way valve body is provided with a first end used for being connected with the inlet of the water heater, a second end used for being connected with the hot water cavity and a third end used for being connected with the cold water pipeline, and the valve core assembly is arranged inside the three-way valve body and is respectively used for conducting the first end and the second end or the first end and the third end.

Preferably, the valve core assembly comprises a valve bracket movably arranged on the inner wall of the three-way valve body, a valve sealing sleeve arranged on the valve bracket and a valve resetting piece for resetting the valve sealing sleeve;

or, the valve core assembly comprises a valve rod, a first plug for sealing a first end is fixed at one end of the valve rod, a second plug for sealing a second end is fixed at the other end of the valve rod, and the distance between the first plug and the second plug is greater than the distance between the sealing parts of the first end and the second end;

a through hole is formed in the first plug, and a sealing diaphragm is arranged on one side, close to the end face of the through hole, of the second plug.

Preferably, a bag is arranged between the piston and the mounting port of the vacuum flask, and the cold water cavity is formed in the bag.

A hot water outlet system comprises a water heater and the energy storage recovery type heat preservation device, and has the following three states:

in the first state, when the external equipment is opened, liquid of the water heater enters the cold water cavity and pushes the piston to move, and liquid in the hot water cavity flows out through the liquid outlet channel;

in the second state, when the piston moves to a preset value, the switching channel is opened, and the liquid of the water heater flows out through the liquid inlet channel, the switching channel and the liquid outlet channel in sequence;

and in the third state, when the external equipment is closed, the piston resets, the switching channel is closed, the backflow channel is opened, the liquid in the cold water cavity reversely enters the water heater through the liquid inlet channel, and the hot water in the water heater enters the hot water cavity through the backflow channel and is insulated.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that:

when external equipment is opened, the cold water discharged from the water heater in the previous period can enter the cold water cavity through the liquid inlet channel for temporary storage, and the piston is pushed to move, so that the hot water in the hot water cavity directly flows out through the liquid outlet channel, a user can quickly obtain the hot water, the time of waiting for the original hot water is saved, the experience feeling of the user is improved, and the original cold water waste is reduced.

When cold water in the cold water cavity is stored for a certain time, the piston can drive the switching unit and open the switching channel, so that warm/hot water of the water heater can enter the hot water cavity through the switching channel and is uniformly mixed with hot water in the hot water cavity until the temperature of the hot water in the hot water cavity is the same as that of outlet hot water of the water heater, and constant-temperature hot water is provided for a user through the outlet channel.

When the external equipment is closed, the inside of the system is in a pressure balance state, the piston resets, the switching channel is closed, the backflow channel is opened, the cold water in the cold water cavity reversely enters the inside of the water heater through the liquid inlet channel, the hot water which is originally heated but not used in the water heater enters the hot water cavity through the backflow channel and is subjected to heat preservation, energy recovery is realized, the hot water is used as hot water for next use, heat energy loss is greatly prevented, and energy conservation and emission reduction are realized.

In addition, the liquid inlet channel, the liquid outlet channel and the backflow channel are integrated through the bottle joint, so that the device is convenient to mount, and the manufacturing cost of the bottle body is greatly reduced.

And secondly, the switching unit is communicated and controlled through the piston, so that the structure is simple, and the reliability is high.

And secondly, the switching control mechanism simultaneously realizes reflux control and cold water inlet control, and facilitates the installation of a cold water pipeline.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of a hot water tapping system of the invention.

FIG. 2 is a schematic view of the initial state of the first embodiment of the energy storage and recovery type thermal insulation device of the present invention.

Fig. 3 is a partially enlarged view of a first embodiment of the energy storage and recovery thermal insulation apparatus of the present invention.

Fig. 4 isbase:Sub>A cross-sectional view of the bottle adapter of fig. 2 taken atbase:Sub>A-base:Sub>A.

Fig. 5 is a cross-sectional view of the switching bracket at B-B in fig. 2.

Fig. 6 is a sectional view of the switching control mechanism at C in fig. 2.

Fig. 7 is a schematic diagram of the state of the first backflow control mechanism when cold water enters the water heater for heating.

Fig. 8 is a schematic view showing the state of the first backflow control mechanism when hot water flows back to the hot water chamber and keeps warm.

FIG. 9 is a schematic view of the first state of the energy-storing and recycling type thermal insulation apparatus of the present invention.

FIG. 10 is a schematic view of a second state of the energy-storing and recycling thermal insulation apparatus of the present invention.

FIG. 11 is a schematic view of a third state of the energy-storing and recycling type thermal insulation apparatus according to the present invention.

Fig. 12 is a schematic structural view of a hot water tapping system according to a second embodiment of the invention.

FIG. 13 is a schematic view of the second embodiment of the energy-storing recuperative thermal insulation apparatus of the present invention in an initial state.

FIG. 14 is a schematic view of the energy storage and recovery thermal insulation apparatus according to the third embodiment of the present invention in an initial state.

Fig. 15 is a partial enlarged view of a third embodiment of the energy storage and recovery thermal insulation apparatus of the present invention.

FIG. 16 is a schematic diagram of the second type of backflow control mechanism when cold water enters the water heater for heating.

Fig. 17 is a schematic view showing a state of the second backflow control mechanism when hot water flows back to the hot water chamber and keeps warm.

FIG. 18 is a schematic structural diagram of a fourth embodiment of the energy storage and recovery type thermal insulation device of the present invention.

FIG. 19 is a schematic structural diagram of a fifth embodiment of the energy-storing and recycling type thermal insulation device of the present invention.

The reference numerals in the figures denote the meanings:

1-vacuum flask; 2-lumen segmentation unit; 3-a switching unit; 4-a reflux unit; 5-a heating unit;

11-a bottle body; 111-cold water chamber; 112-hot water chamber; 113-a mounting port; 114-a heat preservation inner container; 115-a heat-insulating shell; 12-bottle connection; 121-liquid inlet end of joint; 122-outlet end of joint; 123-a joint mounting end; 1231-an outer mounting portion; 1232-inner mount; 1233-first switching port; 124-a backflow end; 13-a liquid inlet channel; 14-an inner tube; 15-liquid outlet channel; 16-a bottle cap; 17-a thermal insulation material; 18-a check; 19-a bottom cover;

21-a piston; 22-a piston return; 23-a second fixation sleeve; 24-repositioning the bearing block; 25-pouch;

31-switching channels; 32-a switching control mechanism; 321-a switching bracket; 3211-a stent body portion; 3212-a bracket linkage; 3213-a transition channel; 322-a first reset piece; 323-a first fixation sleeve;

325-a seal; 326-a second reset piece; 327-sealing connection; 33-switching the tube; 331-annular limit stops; 34-a second switching port;

41-a return channel; 42-a reflux control mechanism; 421-three-way valve body; 4211-first end; 4212-a second end; 4213-third end; 422-valve core assembly; 4221-valve support; 4222-valve gland; 4223-valve reset; 43-reflux pump;

4231-a valve stem; 4232-first plug; 4233-second plug; 4234-sealing membrane;

51-a temperature control switch; 52-a heating member;

100-an energy storage recovery type heat preservation device; 200-a water heater; 201-water heater inlet; 202-water heater outlet; 300-cold water line.

Detailed Description

The invention is further described below with reference to specific examples:

the first embodiment is as follows:

as shown in fig. 1, a hot water tapping system includes a cold water pipeline 300, a water heater 200 and an energy storage recovery type heat preservation device 100. The water heater 200 of the present embodiment is generally an instant water heater such as a gas water heater.

As shown in fig. 2, the energy-storage-recovery-type thermal insulation device 100 is used for being installed between a water heater inlet 201 and a water heater outlet 202 of a water heater 200, and comprises a thermal insulation bottle 1, an inner cavity dividing unit 2, a switching unit 3 and a backflow unit 4.

As shown in fig. 3 to 4, the vacuum flask 1 includes a flask body 11, a flask connector 12, and an inner tube 14.

The bottle body 11 is provided with a heat preservation inner container 114 and a heat preservation shell 115, a heat preservation inner cavity for containing liquid is formed in the heat preservation inner container 114, and a vacuum layer is arranged between the heat preservation inner container 114 and the heat preservation shell 115 and used for preserving heat of the liquid. The bottle body 11 is provided with an installation port 113 with internal threads, and the installation port 113 is screwed with the bottle joint 12.

Bottle joint 12 has the joint feed liquor end 121 that is used for connecting water heater export 202, the joint that is used for connecting external equipment goes out liquid end 122 and connects the joint installation end 123 of installing port 113, it has outer installation department 1231 and interior installation department 1232 to connect installation end 123, and outer installation department 1231 and interior installation department 1232 all are the ring form and coaxial setting, clearance intercommunication between outer installation department 1231 and the interior installation department 1232 connect feed liquor end 121 to form the feed liquor passageway 13 of intercommunication heat preservation inner chamber. At the same time, the inlet channel 13 is connected to the outlet 202 of the water heater by a pipe.

The outer wall of the outer mounting part 1231 is provided with an external thread and an O-shaped ring matched with the mounting port 113, and the bottle joint 12 is hermetically connected with the bottle body 11. An inner tube 14 is arranged on the inner wall of the inner mounting part 1232, the inner tube 14 is preferably a stainless steel tube, and the other end of the inner tube 14 extends into the bottom of the bottle body 11 and is communicated with the heat preservation inner cavity. A liquid outlet channel 15 is formed among the inner pipe 14, the inner mounting part 1232 and the joint liquid outlet end 122. The liquid outlet channel 15 is connected with external equipment such as a faucet and a shower head through pipelines and is used for hot water of a user.

The inner cavity dividing unit 2 is provided with a piston 21 movably arranged in the heat preservation inner cavity and a piston resetting piece 22 for resetting the piston 21, in the embodiment, the piston resetting piece 22 is a resetting spring, one end of the piston resetting piece is abutted to the piston 21, and the other end of the piston resetting piece is abutted to the bottom of the bottle body 11. For ease of installation, a second retaining sleeve 23 may also be secured to the inner end of the inner tube 14, with a return spring disposed between the piston 21 and the second retaining sleeve 23.

The piston 21 divides the heat-preservation inner cavity into a cold water cavity 111 and a hot water cavity 112, the liquid inlet channel 13 is communicated with the cold water cavity 111, and the cold water cavity 111 is the heat-preservation inner cavity at one side of the piston close to the mounting opening 113; the hot water cavity 112 is communicated with the liquid outlet channel 15 through the inner pipe 14.

In this embodiment, since the heating of instant water heater needs a certain time, the cold water that just begins to discharge is generally cold water, along with the increase of heating time, the temperature slowly increases, so use hot water at ordinary times and need wait for a moment and have hot water, have the problem of waiting for a long time, simultaneously, the cold water of earlier stage is generally all extravagant, not environmental protection. The cold water cavity 111 of the embodiment is mainly used for temporarily storing cold water just discharged by the water heater, so that the waste of the cold water is reduced; the hot water cavity 112 is used for storing hot water, and the hot water cavity 112 can quickly provide the user with early hot water, so that the waiting time of the user is greatly shortened, and the hot water is quickly discharged.

Preferably, the present embodiment is provided with a check 18 for preventing convection at the junction of the cold water cavity 111 and the liquid inlet channel 13, the joint liquid inlet end 121 and the joint liquid outlet end 122, and the check 18 is preferably a rubber film, which is an annular membrane and has a certain check effect. However, under the restoring force of piston restoring element 22, check element 18 will fail and will not affect the cold water return.

In order to prevent heat loss at the bottle joint 12, the vacuum flask 1 further comprises a bottle cap 16 arranged outside the bottle joint 12, and a heat preservation material 17 is filled between the bottle cap 16 and the bottle joint 12. Secondly, the bottle connects 12 outside and still is provided with heating element 5, heating element 5 includes temperature detect switch 51 and heater block 52, and when temperature detect switch 51 sensed the liquid temperature in the thermos and was less than the setting value, can drive heater block 52 and heat, ensures that the hot water intracavity has the hot water of predetermineeing the temperature all the time, provides convenience for the next use of user.

As shown in fig. 3 to 6, the switching unit 3 has a switching channel 31 for communicating the liquid inlet channel 13 and the liquid outlet channel 15, and a switching control mechanism 32 for controlling the switching channel 31 to be on or off.

Specifically, a plurality of first switching ports 1233 are circumferentially formed in the inner mounting portion 1232, and a switching tube 33 is movably disposed outside the first switching ports 1233 and is used for controlling the opening or closing of the first switching ports 1233. The switching tube 33 is simultaneously sleeved on the outer side of the inner tube 14, the switching channel 31 is formed between the switching tube 33 and the inner tube 14, the first switching port 1233 is communicated with and arranged at the outer end of the switching channel 31, the switching control mechanism 32 is arranged at the inner end of the switching channel 31, and the switching control mechanism 32 controls the switching channel 31 to be opened or closed by controlling the switching tube 33.

In this embodiment, the switching control mechanism 32 includes a switching bracket 321 disposed at the inner end of the switching tube 33, a first reset member 322 for resetting the switching tube 33, and a first fixing sleeve 323 fixed at the middle of the inner tube.

The switching bracket 321 has a bracket main body portion 3211 provided with a bracket mounting hole and a bracket linkage portion 3212 for driving the piston 21, the bracket main body portion 3211 is fixed to an inner end inner wall of the switching tube 33 and movably mounted on the inner tube 14 through the bracket mounting hole, and a transition passage 3213 for communicating the switching passage 31 with the hot water chamber 112 is provided on the bracket main body portion 3211, so that the switching passage 31 is communicated with the hot water chamber.

The first reset member 322 is a spring, which is disposed between the first fixing sleeve 323 and the switching bracket 321, and is used for resetting the switching tube 33 and closing the first switching port 1233.

The piston 21 has a central hole in the middle, and the inner end of the switching tube 33 passes through the central hole of the piston 21 and extends into the hot water chamber 112. In other words, the piston 21 is movably installed on the outer wall of the switching pipe 33, and the cold water chamber and the hot water chamber are not communicated with each other. In addition, since the inner tube 14 is arranged inside the switching tube 33, and the length of the inner tube 14 is greater than that of the switching tube 33, which is equivalent to indirectly penetrating through the central hole and extending into the hot water chamber, the switching channel 31 is communicated with the liquid outlet channel 15 through the hot water chamber 112. In the process, if the warm water of the water heater enters the hot water cavity 112 through the switching channel 31, the warm water can be uniformly mixed with the hot water in the hot water cavity 112 and then flows out through the liquid outlet channel, so that the use of a user is more comfortable.

The preset position of the piston 21 is the moving stroke of the piston on the switching tube 33, and the stroke can be calculated according to the volume of cold water to be emptied before the water heater starts to heat the cold water to a preset temperature, the inner diameter of the heat preservation inner cavity and the moving distance of the switching tube 33. In contrast, the greater the travel of the piston 21, the greater the volume of cold water contained, when the holding chamber is constant.

When the cold water cavity is fed with liquid, the piston 21 moves inwards, the cold water cavity is enlarged, and the hot water cavity is reduced; when the piston 21 reaches the preset position, the piston 21 abuts against the bracket linkage portion 3212 and drives the bracket linkage portion 3212 and the switching tube 33 to move together, thereby opening the first switching port 1233. At this time, the hot water of the water heater 200 can directly flow out through the liquid inlet channel 13, the switching channel 31, the hot water cavity 112 and the liquid outlet channel 15 in sequence, so as to be used by the user normally.

As shown in fig. 2, the backflow unit 4 has a backflow passage 41 communicating the hot water chamber 112 with the water heater inlet 201, and a backflow control mechanism 42 controlling the backflow passage 41 to be opened or closed. The backflow control mechanism 42 of the present embodiment also has a function of connecting the cold water pipeline 300, so as to facilitate the liquid feeding of the water heater.

As shown in fig. 7, the backflow control mechanism 42 includes a three-way valve body 421 and a valve core assembly 422, wherein the three-way valve body 421 has a first end 4211 for connecting with the inlet 201 of the water heater, a second end 4212 for connecting with the hot water chamber 112, and a third end 4213 for connecting with the cold water pipeline 300. The valve core assembly 422 is arranged inside the three-way valve body 421, and comprises a valve support 4221 movably arranged on the inner wall of the three-way valve body 421, a valve sealing sleeve 4222 installed on the valve support 4221, and a valve resetting member 4223 used for resetting the valve sealing sleeve 4222, wherein the valve resetting member 4223 is a spring, and the valve sealing sleeve 4222 is a rubber piston.

The first end 4211, the third end 4213, the valve support 4221 and the valve sealing sleeve 4222 of this embodiment are all coaxially disposed, and the second end 4212 is disposed on a sidewall of the three-way valve body 421. In this embodiment, the bottle joint 12 is provided with a return end 124 communicating with the inner tube 14, the return passage 41 is provided between the return end 124 and the second end 4212, and at this time, the inlet of the water heater can communicate with the hot water chamber 112 through the return passage 4 and the inner tube 14.

In addition, in this embodiment, the backflow control mechanism 42 is mounted to the bottom of the vial 11 through the bottom cap 19.

When the external device is turned on, as shown in fig. 7, the water heater is filled, the water pressure in the cold water pipe 300 can overcome the valve reset member 4223 and push the valve sealing sleeve 4222 to move, so as to conduct the first end 4211 and the third end 4213, and meanwhile, the valve sealing sleeve 4222 is just positioned at the position for sealing the second end 4212.

As shown in fig. 8, when the external device is turned off, the inside of the hot water outlet system is in a balanced state, and at this time, the valve resetting member 4223 pushes the valve sealing sleeve 4222 to reset and seal the third end 4213, so that the first end 4211 and the second end 4212 are communicated, and hot water in the water heater flows back to the hot water cavity 112.

In summary, the hot water outlet system has the following four states:

in an initial state, as shown in fig. 2, when the external device is not started, the piston is located at the mounting port, the volume of the cold water chamber 111 is ignored, and the hot water chamber 112 stores hot water. At this time, the reflow unit 4 is in a state of conducting the first end 4211 and the second end 4212.

In the first state, as shown in fig. 9, when the external device is turned on, the water heater 200 starts to heat, the cold water which is not completely heated at first enters the cold water chamber 111 through the inlet channel 13 and pushes the piston 21 to move, and the hot water in the hot water chamber 112 flows out through the outlet channel 15 for the user to use in the early stage. At this time, the reflow unit 4 is in a state of conducting the first end 4211 and the third end 4213.

In the second state, as shown in fig. 10, when the piston 21 moves to the preset value, the switching control mechanism 32 and the switching pipe 33 are pushed to move, the first switching port 1233 is opened (i.e. the switching channel 31 is opened), and the hot water of the water heater 200 sequentially passes through the liquid inlet channel 13, the switching channel 31, the hot water cavity 112 and the liquid outlet channel 15 to flow out for the normal use of the user. At this time, the reflow unit 4 continues to be in a state of conducting the first end 4211 and the third end 4213.

In the third state, as shown in fig. 11, when the external device is turned off, the hot water outlet system is in a balanced state because there is no liquid and pressure loss, and thus the cold water pipeline 300 does not feed liquid. Upon resetting of the valve reset 4223, the return unit 4 is in a state of communicating the first end 4211 and the second end 4212, that is, the return passage 41 is opened.

Meanwhile, the piston 21 is reset, the switching channel 31 is closed, cold water in the cold water cavity 111 reversely enters the inside of the water heater 200 through the liquid inlet channel 13, hot water which is originally heated but is not used in the inside of the water heater 200 enters the hot water cavity 112 through the return channel 41, heat preservation is carried out, and the hot water outlet system returns to the initial state again.

The environmental protection value of this embodiment:

according to 15 times of water consumption of one family per day, compared with the equivalent amount of hot water discharged by a traditional hot water system, after the hot water discharging system is used, the service time of the gas water heater can be reduced by at least 10 seconds each time, and then 75 minutes is saved in one month. Meanwhile, the water can be saved by 0.6 ton per month, and 2.3 cubic natural gas is consumed when 0.6 ton of water is heated, which is converted into 4.5 kg of carbon emission. The number of users of gas water heaters in China is about 1.5 hundred million, if the gas water heaters are used by all people, the carbon emission can be reduced by 67.5 million tons each month, 9000 million tons of water can be saved (equivalent to 6 West lakes), and the benefit is extremely considerable.

Example two:

the structure of this embodiment is basically the same as that of the first embodiment, and the difference is that:

as shown in fig. 12-13, the energy-storing and recycling type thermal insulation apparatus 100 of the present embodiment can be installed only vertically, i.e., the installation opening 113 of the bottle body 11 is disposed downward, so that the piston 21 can move vertically. At this time, the piston returning member 22 may be a returning bearing block 24, and the returning of the piston 21 is realized by the gravity of the returning bearing block 24.

In addition, the reset bearing block 24 can be integrally formed with the piston 21, in other words, as long as the piston 21 can satisfy the automatic reset under the action of its own weight.

In addition, the backflow control mechanism 42 of the present embodiment is provided separately for the convenience of installation.

Example three:

the structure of this embodiment is basically the same as that of the first embodiment, and the difference is that:

as shown in fig. 14, the switching tube 33 is integrally formed on the inner mounting portion 1232, a plurality of second switching ports 34 communicating with the switching passage 31 are circumferentially opened at an outer end of the switching tube 33, and an annular stopper 331 for limiting the detachment of the piston 21 is provided at the outer end of the switching tube 33.

As shown in fig. 15, the switching control mechanism 32 includes a sealing member 325 for sealing/conducting the second switching port 34, a second returning member 326 for returning the sealing member 325, and a sealing connection member 327 for connecting the sealing member 325 and the piston 21. The sealing member 325 is annular and is fitted around the switching pipe 33 outside the second switching port 34. The second restoring member 326 is a spring, and one end thereof is fixed to the bottle adapter 12 and the other end thereof is fixed to the sealing member 325. The sealing connector 327 is a length of drawstring.

When the cold water chamber 111 is filled with the liquid, the pull cord is extended when the piston 21 starts to move, but the seal 325 does not act on the seal 325 at the beginning, and the seal 325 always seals the second switching port 34.

When the piston 21 reaches the predetermined position, i.e. the pulling rope is at the maximum length, at this time, the piston 21 continues to move, and the pulling rope will pull the sealing member 325 to move and open the second switching port 34, thereby opening the switching passage 31.

When the piston 21 is reset, the second reset member 326 pulls the seal 325 to move and seal the second switching port 34.

As shown in fig. 16, the backflow control mechanism 42 comprises a three-way valve body 421 and a valve core assembly 422, wherein the three-way valve body 421 has a first end 4211 for connecting with the inlet 201 of the water heater, a second end 4212 for connecting with the hot water chamber 112, and a third end 4213 for connecting with the cold water pipeline 300.

In this embodiment, the backflow control mechanism 42 is located at the bottom of the bottle body 11, a backflow port is formed at the bottom of the bottle body 11, and the second end 4212 is directly connected to the backflow port, which is equivalent to the backflow passage integrally formed on the three-way valve body 421.

The valve core assembly 422 is arranged inside the three-way valve body 421 and comprises a valve rod 4231, a first plug 4232 for sealing the first end 4211 is fixed at one end of the valve rod 4231, and a second plug 4233 for sealing the second end 4212 is fixed at the other end of the valve rod 4231, so that the first plug 4232 and the second plug 4233 are linked. A through hole is formed in the first plug 4232, and a sealing diaphragm 4234 is arranged on one side, close to the end face of the through hole, of the second plug 4233. Sealing rings are mounted on the outer sides of the first plug 4232 and the second plug 4233, and the diameter of the first plug 4232 is larger than that of the second plug 4233.

The first end 4211, the second end 4212 and the valve core assembly 422 of the present embodiment are all coaxially disposed, and the third end 4213 is disposed on the sidewall of the three-way valve body 421. The distance between the first end cap 4232 and the second end cap 4233 is larger than the distance between the sealing parts of the first end 4211 and the second end 4212. Namely:

as shown in fig. 16, when the cold water pipeline 300 is fed, the cold water drives the first plug 4232 to move towards the first end 4211, and the first end 4211 is communicated, and at the same time, the second plug 4233 seals the second end 4212.

As shown in fig. 17, when hot water of the water heater flows back, the hot water of the water heater drives the first plug 4232 to move towards the second end 4212, the first plug 4232 is located at a position blocking the first end 4211, but the first plug 4232 opens the through hole through deformation of the sealing diaphragm 4234, and at the same time, the second plug 4233 conducts the second end 4212, so that the first end 4211 and the second end 4212 are conducted, and the hot water of the water heater enters the hot water cavity 112 through the three-way valve body 421, so that heat preservation is realized.

Example four:

as shown in fig. 18, on the basis of the first embodiment, in order to reduce the difficulty in manufacturing the piston and increase the sealing performance between the cold water chamber 111 and the hot water chamber 112, a bag 25 is arranged between the piston 21 and the mounting port 113 of the thermos bottle 1, and the cold water chamber 111 is formed in the bag 25.

Specifically, the outer diameter of the bag 25 is matched with the inner diameter of the inner cavity of the thermos bottle 1, and the bag is attached to the inner wall of the inner cavity of the thermos bottle 1 in a telescopic manner, the outer end of the bag 25 is fixed to the inner mounting part 1232 and the mounting port 113 of the thermos bottle, the inner end of the bag 25 is integrally formed with the outer ring of the piston 21, and the bag and the piston are made of rubber materials. At this time, the bladder 25 and the piston 21 form a closed space communicating with the liquid inlet passage 13, i.e., a cold water chamber 111.

When water enters the cold water cavity 111, the bladder 25 extends and pushes the piston 21 to move inwards, and the hot water cavity 112 discharges water; when water enters the hot water cavity 112, the piston 21 moves outwards, the bladder 25 contracts, and the cold water cavity 111 discharges water.

Example five:

as shown in fig. 19, in the fourth embodiment, a return pump 43 is provided in the return passage 41, and the piston returning member 22 is eliminated.

In this embodiment, the reflux pump 43 is a micro water pump, and when heat is recovered, the micro water pump is started to reversely reflux hot water in the water heater 200 to the hot water cavity of the bottle 11, and pressurized liquid can drive the piston 21 to reset, which is equivalent to replacing the action of a return spring, so as to realize quick reflux of cold water and hot water.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (10)

1. An energy storage recovery type heat preservation device is used for being installed between a water heater inlet (201) and a water heater outlet (202) of a water heater (200); it is characterized by comprising:

the thermos bottle (1) is provided with a liquid inlet channel (13) used for connecting the outlet (202) of the water heater, a liquid outlet channel (15) used for connecting external equipment and a heat preservation inner cavity used for containing liquid;

the inner cavity dividing unit (2) is provided with a piston (21) movably arranged in the heat-insulating inner cavity, the piston (21) divides the heat-insulating inner cavity into a cold water cavity (111) and a hot water cavity (112), the liquid inlet channel (13) is communicated with the cold water cavity (111), and the hot water cavity (112) is communicated with the liquid outlet channel (15);

the switching unit (3) is provided with a switching channel (31) for communicating the liquid inlet channel (13) and the liquid outlet channel (15) and a switching control mechanism (32) for controlling the switching channel (31) to be switched on or switched off; and

and the backflow unit (4) is provided with a backflow channel (41) for communicating the hot water cavity (112) with the water heater inlet (201) and a backflow control mechanism (42) for controlling the backflow channel (41) to be conducted or closed.

2. The energy-storage recycling type heat preservation device according to claim 1, wherein the inner cavity dividing unit (2) further comprises a piston resetting member (22) for resetting the piston (21), or/and a return pump (43) is arranged on the return channel (41).

3. The energy-storing and recuperating thermal insulation device according to claim 1, characterized in that the vacuum flask (1) comprises:

the bottle body (11) is provided with the heat-preservation inner cavity and an installation opening (113) communicated with the cold water cavity (111);

the bottle joint (12) is provided with a joint liquid inlet end (121) used for being connected with an outlet (202) of the water heater, a joint liquid outlet end (122) used for being connected with external equipment and a joint mounting end (123) connected with the mounting port (113), the joint mounting end (123) is provided with an outer mounting part (1231) and an inner mounting part (1232), a gap between the outer mounting part (1231) and the inner mounting part (1232) is communicated with the joint liquid inlet end (121), and a liquid inlet channel (13) is formed; and

and one end of the inner pipe (14) is arranged in the inner mounting part (1232), and the other end of the inner pipe penetrates through the piston (21) and extends into the hot water cavity (112), so that the liquid outlet channel (15) is formed among the inner pipe (14), the inner mounting part (1232) and the joint liquid outlet end (122).

4. The energy storage recovery type heat preservation device according to claim 3, characterized in that: the switching unit (3) further comprises a switching pipe (33) arranged on the inner mounting part (1232), and the inner end of the switching pipe (33) penetrates through the central hole of the piston (21) and extends into the hot water cavity (112);

in addition, the switching pipe (33) is sleeved outside the inner pipe (14), a switching channel (31) is formed between the switching pipe and the inner pipe (14), and the switching channel (31) is communicated with the liquid outlet channel (15) through a hot water cavity (112).

5. The energy storage and recovery type thermal insulation device according to claim 4, wherein:

a first switching opening (1233) is formed in the inner mounting portion (1232), the switching tube (33) is movably arranged on the outer side of the first switching opening (1233) and controls the first switching opening (1233) to be opened or closed;

the switching control mechanism (32) comprises a switching bracket (321) arranged at the inner end of the switching tube (33) and a first resetting piece (322) for resetting the switching tube (33);

the piston (21) is movably arranged outside the switching tube (33) and can drive the switching tube (33) to move through the switching bracket (321), so that the first switching port (1233) is opened.

6. The energy storage and recovery type thermal insulation device according to claim 4,

the outer end of the switching tube (33) is provided with a second switching port (34) communicated with the switching channel (31);

the switching control mechanism (32) comprises a sealing element (325) for sealing/conducting the second switching port (34), a second resetting element (326) for resetting the sealing element (325), and a sealing connecting element (327) for connecting the sealing element (325) and the piston (21);

when the piston (21) moves to a preset position, the sealing member (325) is driven by the sealing connecting piece (327) to open the second switching port (34), and the switching channel (31) is communicated.

7. An energy storage recovery thermal insulation device according to any one of claims 1 to 6, wherein the return flow control mechanism (42) comprises a three-way valve body (421) and a valve core assembly (422), the three-way valve body (421) is provided with a first end (4211) for connecting with the inlet (201) of the water heater, a second end (4212) for connecting with the hot water cavity (112) and a third end (4213) for connecting with the cold water pipeline (300), and the valve core assembly (422) is arranged inside the three-way valve body (421) and is respectively used for conducting the first end (4211) and the second end (4212) or the first end (4211) and the third end (4213).

8. The energy storage recovery type heat preservation device as claimed in claim 7, wherein the valve core assembly (422) comprises a valve support (4221) movably arranged on the inner wall of the three-way valve body (421), a valve sealing sleeve (4222) installed on the valve support (4221), and a valve resetting piece (4223) for resetting the valve sealing sleeve (4222);

or the valve core assembly (422) comprises a valve rod (4231), a first plug (4232) for sealing the first end (4211) is fixed at one end of the valve rod (4231), a second plug (4233) for sealing the second end (4212) is fixed at the other end of the valve rod (4231), and the distance between the first plug (4232) and the second plug (4233) is larger than the distance between the sealing positions of the first end (4211) and the second end (4212);

the first plug (4232) is provided with a through hole, and one side of the end face of the through hole close to the second plug (4233) is provided with a sealing membrane (4234).

9. The energy storage recovery type heat preservation device according to claim 1, characterized in that: a sac (25) is arranged between the piston (21) and the mounting port (113) of the thermos bottle (1), and the cold water cavity (111) is formed in the sac (25).

10. A hot water tapping system, characterized by comprising a water heater (200) and the energy storage recovery thermal insulation device (100) according to any one of claims 1-9, the hot water tapping system having the following states:

in the first state, when the external equipment is opened, liquid in the water heater (200) enters the cold water cavity (111) and pushes the piston (21) to move, and the liquid in the hot water cavity (112) flows out through the liquid outlet channel (15);

in the second state, when the piston (21) moves to a preset value, the switching channel (31) is opened, and liquid in the water heater (200) sequentially flows out through the liquid inlet channel (13), the switching channel (31) and the liquid outlet channel (15);

and in the third state, when the external equipment is closed, the piston (21) is reset, the switching channel (31) is closed, the backflow channel (41) is opened, the liquid in the cold water cavity (111) reversely enters the water heater (200) through the liquid inlet channel (13), and the hot water in the water heater (200) enters the hot water cavity (112) through the backflow channel (41) and is kept warm.

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