Legionella killing equipment in hot water pipe network system

Abstract

A legionella killing device in a hot water pipe network system comprises a first electric heating pipe and a second electric heating pipe, an electric valve is connected between the first electric heating pipe and the second electric heating pipe, the other end of the first electric heating pipe is connected with a first heat source end connector, and the first heat source end connector is connected with a first constant temperature control valve through a connecting pipe. The first constant-temperature control valve is connected with the first water appliance connector pipe, and the first heat source end connector is connected with the heat source water supply connector pipe; the other end of the second electric heating pipe is connected with a second heat source end connector, the second heat source end connector is connected with a second constant-temperature control valve through a connecting pipe, the second constant-temperature control valve is connected with a second water appliance connector pipe, and the second heat source end connector is connected with a heat source water return connector pipe. The utility model overcomes the defects of the prior art, does not need extra medicament in the whole process, is short in operation time, ensures the killing of legionella at high temperature, maintains the use safety of a hot water system, and avoids the occurrence of hot water scalding events.

Description

Technical Field

[0001] The utility model relates to the field of construction, in particular to a heating technology, and specifically to a device for killing Legionella in a hot water pipe network system. Background Art

[0002] Legionella is an aerobic, polymorphic, Gram-negative bacterium that is widely present in the natural environment and is mainly spread through aerosols and inhalation of water contaminated by bacteria. Once Legionella invades the human body, it attacks fiercely and has a high mortality rate. It is a "killer" lurking around us.

[0003] Legionella reproduces in water at 25℃ to 43℃, and the most suitable growth temperature is 35℃. Legionella likes to survive and spread in warm water and humid places. Studies have shown that Legionella can withstand temperatures up to 60℃ and will not lose its activity in water. When the water temperature is raised to 70℃ for more than 5 minutes, most Legionella can be effectively killed. When the water temperature is raised to above 80℃, it can be completely inactivated in a short time.

[0004] Ordinary civilian hot water pipe systems, such as air-conditioning cooling water, condensate water, shower water, bath water, etc., have slow or even stagnant water flow in some water supply pipes for a long time, and the chlorine-containing disinfectant in the water has evaporated. Therefore, it also provides a suitable environment and nutritional conditions for the massive growth and reproduction of Legionella, becoming the main source of Legionella infection in humans. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a device for killing Legionella in a hot water pipe network system, which overcomes the deficiencies of the prior art and has a reasonable design. No additional agents are required in the entire process and the operating time is short. While ensuring high-temperature killing of Legionella, the safety of the hot water system is maintained to avoid hot water scalding incidents.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A device for killing Legionella in a hot water pipe network system, comprising a first electric heating tube and a second electric heating tube, wherein one end of the first electric heating tube and one end of the second electric heating tube are respectively connected to two ends of an electric valve, the other end of the first electric heating tube is connected to an a interface of a first heat source end joint, the b interface of the first heat source end joint is connected to a hot water interface of a first thermostatic control valve through a connecting pipe, the cold water interface of the first thermostatic control valve is connected to an external cold water pipeline, the output interface of the first thermostatic control valve is connected to a first water-using appliance interface pipe, and the c interface of the first heat source end joint is connected to a heat source water supply interface pipe;

[0008] The other end of the second electric heating tube is connected to the a interface of a second heat source end joint, the b interface of the second heat source end joint is connected to the hot water interface of the second thermostatic control valve through a connecting pipe, the cold water interface of the second heat source end joint is connected to the external cold water pipeline, the output interface of the second thermostatic control valve is connected to the second water-using appliance interface pipe, and the c interface of the second heat source end joint is connected to the heat source return water interface pipe; the first water-using appliance interface pipe and the second water-using appliance interface pipe are both connected to the water interface of the water-using appliance.

[0009] Preferably, a temperature sensor is installed on the first electric heating tube or the second electric heating tube, and the sensing end of the temperature sensor is located in the inner cavity of the first electric heating tube or the second electric heating tube; the signal output port of the temperature sensor is connected to the signal input port of the controller, and the signal output port of the controller is respectively connected to the first electric heating tube, the second electric heating tube and the electric valve.

[0010] Preferably, the connecting pipe is made of copper.

[0011] The utility model provides a device for killing Legionella in a hot water pipe network system. It has the following beneficial effects: by setting a first electric heating tube, a second electric heating tube and an electric valve, during the intermittent period when the amount of hot water used is small, the electric valve is controlled to open, and the first electric heating tube and the second electric heating tube are controlled to start heating at the same time, so that the circulation loop of the entire hot water pipe network is filled with high-temperature hot water, thereby achieving a rapid disinfecting effect on the Legionella in the circulation loop of the hot water pipe network. At the same time, the water temperature of the outlet set by the first thermostatic control valve and the second thermostatic control valve can effectively block the high-temperature water from flowing to the pipe section of the water-using appliance; in addition, during the high-temperature disinfecting process, even if the water-using appliance is turned on, the first thermostatic control valve and the second thermostatic control valve can also input cold water and high-temperature water through the cold water interface to mix, so as to ensure that the water outlet of the water-using appliance is at a normal use temperature, and then can avoid the occurrence of high-temperature hot water scalding accidents while sterilizing. The whole process does not require additional medication, and the running time is short. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings required for describing the prior art are briefly introduced below.

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the utility model when in use;

[0015] Description of the numbers in the figure:

[0016] 1. First electric heating tube; 2. Second electric heating tube; 3. Electric valve; 4. First heat source end joint; 5. First constant temperature control valve; 6. First water-using appliance interface pipe; 7. Heat source water supply interface pipe; 8. Second heat source end joint; 9. Second constant temperature control valve; 10. Second water-using appliance interface pipe; 11. Heat source return water interface pipe; 12. Temperature sensor. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0018] Embodiment 1, as Figure 1-2 As shown, a device for killing Legionella in a hot water pipe network system comprises a first electric heating tube 1 and a second electric heating tube 2, one end of the first electric heating tube 1 and one end of the second electric heating tube 2 are respectively connected to the two ends of an electric valve 3, the other end of the first electric heating tube 1 is connected to an a interface of a first heat source end joint 4, the b interface of the first heat source end joint 4 is connected to the hot water interface of a first thermostatic control valve 5 through a connecting pipe, the cold water interface of the first thermostatic control valve 5 is connected to an external cold water pipeline, the output interface of the first thermostatic control valve 5 is connected to a first water-using appliance interface pipe 6, and the c interface of the first heat source end joint 4 is connected to a heat source water supply interface pipe 7;

[0019] The other end of the second electric heating tube 2 is connected to the a interface of a second heat source end joint 8, the b interface of the second heat source end joint 8 is connected to the hot water interface of the second constant temperature control valve 9 through a connecting pipe, the cold water interface of the second heat source end joint 8 is connected to the external cold water pipeline, the output interface of the second constant temperature control valve 9 is connected to the second water-using appliance interface pipe 10, and the c interface of the second heat source end joint 8 is connected to the heat source return water interface pipe 11; the first water-using appliance interface pipe 6 and the second water-using appliance interface pipe 10 are both connected to the water interface of the water-using appliance.

[0020] Working principle:

[0021] During use, during the normal operation of the hot water network, the electric valve 3 is in a closed state, and the hot water is directly transported to the first heat source end joint 4 through the heat source water supply interface pipe 7, and then transported to the first constant temperature control valve 5 through the b interface of the first heat source end joint 4. The water temperature is made to meet the set temperature value (usually 35 to 50°C) through the cold water interface of the first constant temperature control valve 5, and then the first constant temperature control valve 5 is opened, so that the hot water can be transported to the water-using appliance through the first water-using appliance interface pipe 6, without affecting the normal operation of the hot water system.

[0022] During the intermittent period when the usage of hot water is relatively low (such as the early morning hours), the electric valve 3 is controlled to open, so that the hot water in the hot water network is transported to the first heat source end joint 4 through the heat source water supply interface pipe 7, and then flows into the first electric heating tube 1 and the second electric heating tube 2 through the a interface of the first heat source end joint 4, and then flows into the heat source return water interface pipe 11 through the c interface of the second heat source end joint 8, thereby forming a circulation loop; at the same time, the first electric heating tube 1 and the second electric heating tube 2 are controlled to start heating, so that the circulation loop of the entire hot water network is filled with high-temperature hot water, and when the temperature reaches the set temperature value (greater than 80°C), the first electric heating tube 1 and the second electric heating tube 2 are controlled to stop heating; thereby, the rapid disinfection effect of Legionella in the circulation loop of the hot water network can be achieved. At the same time, the water temperature at the water outlet set by the first thermostatic control valve 5 and the second thermostatic control valve 9 can effectively block the high-temperature water from flowing to the pipe section of the water-using appliance; in addition, during the high-temperature disinfection process, even if the water-using appliance is turned on, the first thermostatic control valve 5 and the second thermostatic control valve 9 can also input cold water and mix high-temperature water through the cold water interface to ensure that the water outlet of the water-using appliance is at a normal operating temperature, thereby being able to sterilize while avoiding scalding accidents caused by high-temperature hot water.

[0023] The entire process does not require additional chemicals and has a short operating time, which can save costs and does not affect the daily use of the hot water network.

[0024] Embodiment 2, as a further preferred embodiment of embodiment 1, a temperature sensor 12 is installed on the first electric heating tube 1 or the second electric heating tube 2, and the sensing end of the temperature sensor 12 is located in the inner cavity of the first electric heating tube 1 or the second electric heating tube 2; the signal output port of the temperature sensor 12 is connected to the signal input port of a controller, and the signal output port of the controller is respectively connected to the first electric heating tube 1, the second electric heating tube 2 and the electric valve 3.

[0025] During the normal operation of the hot water network, the controller can directly control the electric valve 3 to close, so that the hot water system can operate normally. During the intermittent period when the use of hot water is relatively small (such as the early morning hours), the controller can control the electric valve 3 to open, and at the same time control the first electric heating tube 1 and the second electric heating tube 2 to start heating, so that the circulation loop of the entire hot water network is filled with high-temperature hot water; the temperature sensor 12 is used to measure the temperature of the water in the circulation loop of the hot water network. When the temperature reaches the set temperature value (greater than 80°C), the temperature sensor 12 can transmit a signal to the controller, and then the controller controls the first electric heating tube 1 and the second electric heating tube 2 to stop heating. Thereby achieving the effect of rapid disinfection of Legionella in the entire hot water circulation network.

[0026] Embodiment 3, as a further preferred solution of embodiment 2, the connecting pipe is made of copper pipe. In this embodiment, the cores of the first electric heating pipe 1 and the second electric heating pipe 2 can also be made of copper pipe to increase the service life of the entire device.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for killing Legionella in a hot water pipe network system, characterized in that: The invention comprises a first electric heating tube (1) and a second electric heating tube (2), wherein one end of the first electric heating tube (1) and one end of the second electric heating tube (2) are respectively connected to two ends of an electric valve (3), the other end of the first electric heating tube (1) is connected to an interface a of a first heat source end joint (4), the interface b of the first heat source end joint (4) is connected to a hot water interface of a first thermostatic control valve (5) through a connecting pipe, the cold water interface of the first thermostatic control valve (5) is connected to an external cold water pipeline, the output interface of the first thermostatic control valve (5) is connected to a first water-using appliance interface pipe (6), and the interface c of the first heat source end joint (4) is connected to a heat source water supply interface pipe (7); The other end of the second electric heating tube (2) is connected to an interface a of a second heat source end joint (8); an interface b of the second heat source end joint (8) is connected to a hot water interface of a second thermostatic control valve (9) via a connecting pipe; a cold water interface of the second heat source end joint (8) is connected to an external cold water pipeline; an output interface of the second thermostatic control valve (9) is connected to a second water-using appliance interface pipe (10); an interface c of the second heat source end joint (8) is connected to a heat source return water interface pipe (11); and the first water-using appliance interface pipe (6) and the second water-using appliance interface pipe (10) are both connected to a water interface of a water-using appliance.

2. The device for killing Legionella in a hot water pipe network system according to claim 1, characterized in that: A temperature sensor (12) is installed on the first electric heating tube (1) or the second electric heating tube (2), and the sensing end of the temperature sensor (12) is located in the inner cavity of the first electric heating tube (1) or the second electric heating tube (2); the signal output port of the temperature sensor (12) is connected to the signal input port of the controller, and the signal output port of the controller is respectively connected to the first electric heating tube (1), the second electric heating tube (2) and the electric valve (3).

3. The device for killing Legionella in a hot water pipe network system according to claim 1, characterized in that: The connecting pipe is made of copper pipe.

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