CN214362330U

CN214362330U - PTC drying and heating system

Info

Publication number: CN214362330U
Application number: CN202120217897.9U
Authority: CN
Inventors: 徐根娣; 万波; 杨华; 郭跃
Original assignee: Beijing Yousa Washing Equipment Co ltd
Current assignee: Beijing Yousa Washing Equipment Co ltd
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-10-08
Anticipated expiration: 2031-01-26

Abstract

The application relates to a PTC drying and heating system, which comprises a return pipe, an exhaust pipe and a PTC heater; one end of the PTC heater is connected and communicated with the exhaust pipe, and the other end of the PTC heater is connected and communicated with the return pipe; the exhaust pipe is provided with a pressure release valve and a water injection pipe, and the water injection pipe is provided with a valve; the return pipe is connected and communicated with an exhaust valve. The heating device has the effects of high heating efficiency, low energy consumption and high safety.

Description

PTC drying and heating system

Technical Field

The application relates to the field of washing equipment, in particular to a PTC drying and heating system.

Background

A dry cleaning machine is a mechanical apparatus for washing fabrics using a dry cleaning solvent, and generally comprises a washing system, a filtering system, a drying and recycling system, and a detergent distillation system.

Chinese patent publication No. CN2921066 discloses an improved dry cleaning machine, which comprises a drying system, wherein the drying system comprises an air passage, a liquid injection ventilation pipe, a motor, an impeller, a washing chamber and a ventilation passage, the impeller is connected with the motor, the air passage is internally of a hollow structure, a fluff filter, a refrigerating device, a heating device and the impeller are sequentially installed in the air passage, and the central lines of the refrigerating device and the heating device are on the same straight line. The heating device also comprises an electric heating pipe and a steam coil, and the central lines of the electric heating pipe and the steam coil and the central line of the hot coil are positioned on the same straight line.

When the dry cleaning machine is used, the steam coil is required to be provided with a steam generating system. The current steam generation system generally uses a heating device to heat water, so that the water is quickly evaporated to form steam; however, the heating device used in the current steam generation system has the disadvantages of low heating efficiency and high energy consumption.

SUMMERY OF THE UTILITY MODEL

In order to improve heating efficiency, reduce the energy consumption, this application provides a PTC stoving heating system.

The application provides a PTC stoving heating system adopts following technical scheme:

a PTC drying and heating system comprises a return pipe, an exhaust pipe and a PTC heater;

one end of the PTC heater is connected and communicated with the exhaust pipe, and the other end of the PTC heater is connected and communicated with the return pipe;

the exhaust pipe is provided with a pressure release valve and a water injection pipe, and the water injection pipe is provided with a valve;

the return pipe is connected and communicated with an exhaust valve.

Through adopting above-mentioned technical scheme, when using, the inlet connection and the intercommunication of blast pipe and heat exchanger, the exit linkage and the intercommunication of backward flow mouth and heat exchanger. After the PTC heater is started, the PTC heater heats liquid water in the PTC heater to form water vapor; the water vapor enters a heat exchanger to exchange heat with air in the drying air duct and is condensed into liquid water; the condensed water then flows back to the PTC heater again through the return pipe and the connection pipe.

The PTC heater and the traditional heater have the same power consumption under the condition of the same power, but the PTC heater has higher efficiency of converting electric energy into heat energy and generates more heat energy; on the contrary, under the condition of the same generated heat energy, the traditional heater consumes more electric energy than the PTC heater, and the PTC heater is more energy-saving. The water injection pipe is used for adding water into the PTC drying and heating system; the pressure release valve can be automatically opened to release pressure after the pressure in the PTC drying and heating system reaches a preset value, so that the operation safety of the PTC drying and heating system is guaranteed. The exhaust valve is used for exhausting air, so that water can smoothly flow into the return pipe.

Optionally, a check valve is connected between the return pipe and the PTC heater.

By adopting the technical scheme, the water in the return pipe can flow into the PTC heater, and the water in the PTC heater cannot flow into the return pipe.

Optionally, the PTC heater is vertically arranged, the exhaust pipe is communicated with the upper end of the PTC heater, the return pipe is communicated with the lower end of the PTC heater through a connecting pipe, and the check valve is installed on the connecting pipe; the return pipe is vertically arranged on one side of the PTC heater.

By adopting the technical scheme, the backflow pipe, the connecting pipe and the PTC heater form a U-shaped communicating vessel, so that water in the backflow pipe can conveniently enter the PTC heater, and the PTC heater can be effectively prevented from being burnt.

Optionally, the system further comprises a controller and a pressure transmitter; the pressure transmitter is arranged on the return pipe; the pressure transmitter is electrically connected with the controller, and the controller is electrically connected with the PTC heater.

By adopting the technical scheme, the pressure transmitter can monitor the gas pressure in the return pipe in real time and output pressure information to the controller; the controller controls whether the PTC heater operates according to a preset pressure.

Optionally, the PTC heater further comprises a protective shell, and the PTC heater is located in the protective shell.

By adopting the technical scheme, the PTC heater is covered in the protective shell to protect the PTC heater, so that the PTC heater is not easy to collide; in addition, the situation that people touch the PTC heater by mistake to scald can be avoided.

Optionally, the protective casing includes a protective cover with an opening at one side and a protective cover covering the opening side of the protective cover and screwed to the protective cover.

Through adopting above-mentioned technical scheme, be convenient for open the protective housing and overhaul the PTC heater.

Optionally, the bottom of the protective cover is provided with a through hole.

Through adopting above-mentioned technical scheme, the through-hole plays heat dissipation, waterproof effect.

Optionally, the mounting hole has been seted up to the safety cover upper end, the back flow is located the safety cover, just the one end that PTC heater was kept away from to the back flow is connected with first coupling, be connected with the second coupling on the coupling, first coupling with the second coupling will the safety cover roof presss from both sides tightly.

Through adopting above-mentioned technical scheme, be in the same place the safety cover is fixed with the back flow, and installation, dismantlement are convenient, and are fixed stable.

Optionally, the protective housing includes a protective cover with an opening at one side and a protective cover covering the opening side of the protective cover, and locking structures are mounted on two opposite sides of the protective cover; the locking structure comprises a connecting sheet, a sliding hole is formed in the connecting sheet, a locking pin penetrates through the sliding hole, and one end of the locking pin is connected with a handle; a tension spring is fixedly connected between the handle and the connecting sheet; the connection piece vertical fixation is in one side of visor, just the extension spring is located the connection piece one side of safety cover dorsad.

And a locking hole matched with the locking pin is formed in the side wall of the protective cover.

Through adopting above-mentioned technical scheme, need not use the instrument when opening, closing the protective housing, make things convenient for the people to open the protective housing and maintain the PTC heater.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the heating efficiency is high, and the energy consumption is low;

2. the pressure release valve can be automatically opened to release pressure after the pressure in the PTC drying and heating system reaches a preset value, so that the operation safety of the PTC drying and heating system is guaranteed;

3. the arrangement of the exhaust valve can prevent the back flow from being suffocated, so that water can smoothly flow into the back flow;

4. the protective shell covers the PTC heater to protect the PTC heater, so that the PTC heater is not easy to collide; in addition, the situation that people touch the PTC heater by mistake to scald can be avoided.

Drawings

Fig. 1 is a schematic overall structure diagram of a first embodiment of the present application.

Fig. 2 is a schematic overall structure diagram of a second embodiment of the present application.

Fig. 3 is a schematic structural diagram of a locking structure in the second embodiment of the present application.

Description of reference numerals: 1. a return pipe; 2. an exhaust pipe; 3. a PTC heater; 4. a pressure transmitter; 5. an exhaust valve; 6. a connecting pipe; 7. a one-way valve; 8. a first pipe joint; 9. a second pipe joint; 11. a water injection pipe; 12. a pressure relief valve; 13. a valve; 14. a protective cover; 141. a second via hole; 15. a protective cover; 151. a through hole; 16. a locking structure; 161. connecting sheets; 162. a slide hole; 163. a locking pin; 164. a handle; 165. a tension spring; 166. and a locking hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses PTC stoving heating system.

The first embodiment is as follows:

referring to fig. 1, the PTC drying and heating system includes a return pipe 1, an exhaust pipe 2, a tubular PTC heater 3, a pressure transmitter 4, a controller (not shown in the figure), and an exhaust valve 5, wherein the PTC heater 3 is also called a PTC heating body.

The PTC heater 3 is vertically arranged, the lower end of the PTC heater 3 is a liquid inlet end of the PTC heater, and the upper end of the PTC heater is an exhaust end of the PTC heater. The return pipe 1 is vertically arranged at one side of the PTC heater 3, and a connecting pipe 6 is connected and communicated between the lower end of the return pipe 1 and the lower end of the PTC heater 3. A check valve 7 is installed on the connection pipe 6, and the check valve 7 is disposed such that liquid and gas in the return pipe 1 can enter the PTC heater 3, but liquid and gas in the PTC heater 3 cannot enter the return pipe 1.

A first pipe joint 8 is connected to the upper end of the return pipe 1 in a threaded manner, and a second pipe joint 9 is connected to the end of the first pipe joint 8 far away from the return pipe 1, wherein the second pipe joint 9 is a four-way pipe joint in the embodiment. One of the four ports of the second pipe joint 9 is in threaded connection with the first pipe joint 8; one port is connected to the pressure transmitter 4; one port is connected with the exhaust valve 5; the last port is used as a reflux port and is used for being connected with the heat exchanger. The pressure transmitter 4 can monitor the gas pressure in the return pipe 1 in real time and output pressure information to the controller; when the pressure in the return pipe 1 exceeds a preset value, the controller turns off the PTC heater 3; when the pressure in the return pipe 1 falls back to another predetermined value, the controller turns on the PTC heater 3.

The exhaust pipe 2 is connected and communicated with the upper end of the PTC heater 3, and a water injection pipe 11 and a pressure release valve 12 are sequentially installed on the exhaust pipe 2 from bottom to top. The water injection pipe 11 is communicated with the exhaust pipe 2, a valve 13 is installed on the water injection pipe 11, and the water injection pipe 11 is used for adding water into the PTC drying and heating system. The pressure release valve 12 is a mechanical pressure release valve 12 in this embodiment, and the pressure release valve 12 is automatically opened to release pressure after the pressure in the PTC drying and heating system reaches a predetermined value, so as to ensure the safety of the operation of the PTC drying and heating system.

Referring to fig. 1, the PTC drying and heating system further includes a protective case. The protective shell comprises a protective cover 15 with an opening at one side and a protective cover 14 covering the opening side of the protective cover 15, the protective cover 14 is in screw connection with the protective cover 15, a through hole 151 is formed in the bottom of the protective cover 15, and the through hole 151 is used for heat dissipation and water drainage.

It should be noted that the return pipe 1, the PTC heater 3, the connecting pipe 6, the check valve 7 and the first pipe joint 8 are all located in the protective shell, the end of the water injection pipe 11 connected with the exhaust pipe 2 is also located in the protective shell, and the second pipe joint 9 is located outside the protective shell. A mounting hole is formed in the upper end of the protective cover 15, one end of the second pipe joint 9 extends into the protective cover 15 through the mounting hole and is in threaded connection with the first pipe joint 8, and meanwhile the top wall of the protective cover 15 is clamped tightly by the first pipe joint 8 and the second pipe joint 9 so that the protective cover 15 and the return pipe 1 are stably fixed together. In addition, a first through hole for the exhaust pipe 2 to pass through is further formed at the upper end of the protective cover 15, and a second through hole 141 for the water injection pipe 11 to pass through is formed in the protective cover 14.

The protective shell covers the PTC heater 3 to protect the PTC heater 3, so that the PTC heater 3 is not easy to collide; in addition, the situation that people touch the PTC heater 3 by mistake to scald can be avoided.

The implementation principle of the first embodiment is as follows: when in use, the exhaust pipe 2 is connected and communicated with an inlet of the heat exchanger, and the return port is connected and communicated with an outlet of the heat exchanger. After the PTC heater 3 is started, the PTC heater 3 heats liquid water in the PTC heater to form water vapor; the water vapor enters a heat exchanger to exchange heat with air in the drying air duct and is condensed into liquid water; the condensed water then flows back to the PTC heater 3 again through the return pipe 1 and the connection pipe 6. When the PTC drying heating system is lack of water, the valve 13 can be opened, and water is added into the PTC heater 3 through the water injection pipe 11.

Example two:

referring to fig. 2 and 3, the present embodiment is different from the first embodiment in that: the protective cover 15 and the protective cover 14 have different coupling structures.

Specifically, locking structures 16 are mounted on two opposite sides of the protective cover 14; the locking structure 16 comprises a connecting piece 161, a sliding hole 162 is formed in the connecting piece 161, a locking pin 163 penetrates through the sliding hole 162, one end of the locking pin 163 is connected with a handle 164, and the other end of the locking pin 163 is processed into a conical tip; a tension spring 165 is fixedly connected between the handle 164 and the connecting piece 161, and the tension spring 165 is sleeved on the locking pin 163. The connecting piece 161 is vertically fixed on one side of the protective cover 14, and the tension spring 165 is positioned on one side of the connecting piece 161, which faces away from the protective cover 15. To engage the locking structure 16, a locking hole 166 for engaging the locking pin 163 is formed in the side wall of the protective cover 15.

The implementation principle of the second embodiment is as follows: under normal conditions, the tip of the locking pin 163 is inserted into the locking hole 166, and the protective cover 14 is stably connected to the protective shell under the cooperation of the locking structure 16 and the locking hole 166. When it is desired to remove the protective cover 14 from the protective cover 15, the protective cover 14 can be removed from the protective cover by simply pulling the handle 164 away from the protective cover 15 to remove the locking pin 163 from the locking hole 166.

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

Claims

1. A PTC drying and heating system is characterized in that: comprises a return pipe (1), an exhaust pipe (2) and a PTC heater (3);

one end of the PTC heater (3) is connected and communicated with the exhaust pipe (2), and the other end of the PTC heater is connected and communicated with the return pipe (1);

a pressure release valve (12) and a water injection pipe (11) are installed on the exhaust pipe (2), and a valve (13) is installed on the water injection pipe (11);

the return pipe (1) is connected and communicated with an exhaust valve (5).

2. A PTC drying and heating system according to claim 1, wherein: a one-way valve (7) is connected between the return pipe (1) and the PTC heater (3).

3. A PTC drying and heating system according to claim 2, wherein: the PTC heater (3) is vertically arranged, the exhaust pipe (2) is communicated with the upper end of the PTC heater (3), the return pipe (1) is communicated with the lower end of the PTC heater (3) through a connecting pipe (6), and the one-way valve (7) is installed on the connecting pipe (6); the return pipe (1) is vertically arranged on one side of the PTC heater (3).

4. A PTC drying and heating system according to claim 1, wherein: the device also comprises a controller and a pressure transmitter (4); the pressure transmitter (4) is arranged on the return pipe (1); the pressure transmitter (4) is electrically connected with the controller, and the controller is electrically connected with the PTC heater (3).

5. A PTC drying and heating system according to any of claims 1-4, wherein: the PTC heater is characterized by further comprising a protective shell, wherein the PTC heater (3) is located in the protective shell.

6. A PTC drying and heating system according to claim 5, wherein: the protective shell comprises a protective cover (15) with an opening at one side and a protective cover (14) covering the opening side of the protective cover (15) and connected with the protective cover (15) through screws.

7. A PTC drying and heating system according to claim 6, wherein: the bottom of the protective cover (15) is provided with a through hole (151).

8. A PTC drying and heating system according to claim 6, wherein: the mounting hole has been seted up to safety cover (15) upper end, back flow (1) is located safety cover (15), just the one end that PTC heater (3) were kept away from in back flow (1) is connected with first coupling (8), be connected with second coupling (9) on the coupling, first coupling (8) with second coupling (9) will safety cover (15) roof presss from both sides tightly.

9. A PTC drying and heating system according to claim 5, wherein: the protective shell comprises a protective cover (15) with an opening at one side and a protective cover (14) covering the opening side of the protective cover (15), and locking structures (16) are arranged on two opposite sides of the protective cover (14); the locking structure (16) comprises a connecting sheet (161), a sliding hole (162) is formed in the connecting sheet (161), a locking pin (163) penetrates through the sliding hole (162), and one end of the locking pin (163) is connected with a handle (164); a tension spring (165) is fixedly connected between the handle (164) and the connecting piece (161); the connecting piece (161) is vertically fixed on one side of the protective cover (14), and the tension spring (165) is positioned on one side, back to the protective cover (15), of the connecting piece (161);

and a locking hole (166) matched with the locking pin (163) is formed in the side wall of the protective cover (15).