RU2839315C1 - Boiler with built-in water heater - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: invention relates to boilers with built-in water heater and can be used to provide heating and hot water without additional installation systems for additional equipment in private houses and organizations. Boiler with a built-in water heater is made in a single housing, inside which there are: a double-circuit gas boiler and a water heater, a safety group, connecting pipes and shut-off and control valves. Water heater is made in the form of a layer-by-layer heating water heater, having a pipe for supplying cold water to the lower part of the water heater, a pipe for water intake from the lower part of the water heater, connected through a pump of the HWS circuit to the secondary heat exchanger of the boiler, having a pipe connecting the hot water outlet from the secondary heat exchanger to the upper part of the water heater. At the same time this branch pipe is equipped with hot water outlet to the consumer. And the water heater contains a drain branch pipe, a safety valve of HWS, a temperature sensor, an anode protection against corrosion, an expansion tank of the HWS circuit.

EFFECT: wider range of heating and hot water supply means – creation of a gas double-circuit boiler with a built-in layer-by-layer heating water heater, which enables to obtain hot water immediately after switching on the boiler.

3 cl, 4 dwg

Description

Field of technology to which the invention relates

The invention relates to boilers with a built-in boiler and can be used to provide heating and hot water without additional systems for installing additional equipment in private homes and organizations.

State of the art

A layered heating boiler with a built-in heat exchanger is known from the prior art (see RU 216247 U1, published 24.01.2023), consisting of a heat-insulated tank, cold water entering through the inlet, and hot water supplied to the consumer through the outlet, cold water from the bottom of the tank enters the heat exchanger located in the same housing as the tank through a branch pipe by means of a circulation pump, hot water from the heat exchanger returns to the upper part of the tank through a branch pipe. The heat exchanger is connected to an external source of any coolant through the branch pipes. The disadvantage of the known technical solution is that it is intended only for providing hot water supply.

Also known from the prior art is a universal condensing block module for heating and hot water supply (see RU 112360 U1, published 10.01.2012), including a housing inside which a boiler-heat exchanger, a circulation pump of the heating system, a system of automatic distribution of the circulation of the coolant are placed, and above the boiler-heat exchanger a condensing gas boiler and an expansion tank of the heating system are installed. The block module is equipped with an additional expansion tank for the DHW system, installed in the upper part of the housing behind the condensing gas boiler. A block of safety devices for the DHW system is installed on the pipeline for supplying cold water to the boiler-heat exchanger. The system of automatic distribution of the circulation of the coolant is made in the form of two pumps installed on the pipeline for supplying the coolant. The outputs of all mains: the supply and return mains of the heating circuit, the supply of cold water and the discharge of hot water are brought out to the front surface of the housing. The disadvantage of the analogue is that a boiler-heat exchanger is used, which requires additional time to heat the water for hot water supply.

In addition, a wall-mounted gas boiler is known from the prior art (see RU 184497 U1, published on 29.10.2018), comprising a wall-mounted housing communicating with the atmosphere, inside which there is a sealed combustion chamber with a flue gas collector communicating with a combustion product removal pipe, inside which there is a gas burner with an ignition device communicated through a gas valve with a gas supply channel, a heating circuit heat exchanger communicated on one side with a coolant supply channel from the heating system, into which a pump and an expansion tank are built, and on the other side with a coolant outlet channel into the heating system. In this case, the boiler is equipped with a control device, a hot water supply circuit heat exchanger located in a separate housing, the cavity of which is communicated on one side with the coolant supply channel from the heating system to the location of the pump in this channel, and on the other side with the coolant outlet channel into the heating system. And the heat exchanger of the hot water supply circuit is connected on one side with the hot water supply channel, in which the water flow sensor is located, and on the other side - with the channel for dispensing hot water to the consumer. The disadvantage of the analogue is that a boiler is not used, if the boiler is not working, there will be no hot water supply to the consumer.

Also known from the prior art is a boiler for heating and hot water supply (see RU 100594 U1, published 20.12.2010), comprising an expansion tank and a sealed housing in which a combustion chamber with a gas burner, a heating circuit heat exchanger with a smoke box, a buffer tank with a hot water circuit heat exchanger, pipes for supplying air to the combustion chamber to the gas burner and removing combustion products, located in the upper part of the boiler, pipes for supplying and discharging the coolant and supplying and discharging water, and a control system are placed. The heating circuit heat exchanger includes a prismatic housing with an open lower part, a tube plate in the upper part and a coil on the outer surface. The smoke box at the point of its connection with the combustion product removal branch pipe is provided with a channel connected to the internal cavity of the sealed casing, and the buffer tank is connected to the coolant outlet branch pipe and includes a prismatic casing with a hot water supply circuit heat exchanger located inside it and its own coolant inlet and outlet branches and water inlet and outlet branches. In this case, the buffer tank is located outside the location of the heating circuit heat exchanger, is placed in the lower part of the sealed casing and is connected by means of an additional branch pipe through a valve for switching to the "heating + hot water supply / hot water supply only" mode to the coolant inlet branch pipe, on which, after its connection with the additional branch pipe of the buffer tank, a pump is installed. The analog also has a drawback typical of the heat exchanger used, requiring additional time to heat water for DHW.

The technical task of the invention is to overcome the shortcomings of the existing level of technology.

In solving the technical problem, the invention achieves a technical result consisting in expanding the arsenal of heating and hot water supply means - the creation of a gas double-circuit boiler with a built-in layered heating boiler, which allows hot water to be obtained immediately after turning on the boiler.

Disclosure of the essence of the invention

The invention is a boiler with a built-in water heater, made in a single housing, inside which are located: a double-circuit gas boiler and a water heater, a safety group, connecting pipes and shut-off and control valves, wherein, according to the invention, the water heater is made in the form of a layered heating water heater, having a cold water supply pipe to the lower part of the water heater, a water intake pipe from the lower part of the water heater, connected through a DHW circuit pump to a secondary heat exchanger of the boiler, having a pipe connecting the hot water outlet from the secondary heat exchanger to the upper part of the water heater, wherein this pipe is equipped with a hot water outlet to the consumer, and the water heater contains a drain pipe, a DHW safety valve, a temperature sensor, anode protection against corrosion, an expansion tank of the DHW circuit.

The safety group and shut-off and control valves contain: an electronic gas valve, an air valve, a drain valve, a water flow limiter, a secondary heat exchanger safety valve, a heating sensor, a safety heating thermostat, a 3-way bypass valve, a water pressure relay, a pressure gauge, and a make-up valve.

In this case, the control of the boiler and water heater is located on the front panel of the housing.

Brief description of accompanying figures

The essence of the invention can be further explained by non-limiting examples reflected in the accompanying figures 1-4, where:

Fig. 1 - working diagram of a boiler with a built-in boiler according to the invention;

Fig.2 - photo of the external appearance of the boiler with a built-in water heater, front view;

Fig. 3 - photo of the external appearance of the boiler with a built-in water heater, rear view;

Fig.4 - photo of the layout option.

The following elements are designated as separate positions:

1 - fan;

2 - heat exchanger;

3 - ignition electrode;

4 - burner;

5 - electronic gas valve;

6 - secondary heat exchanger;

7 - air valve;

8 - main pump;

9 - drain valve;

10 - bypass;

11 - water flow limiter;

12 - safety valve;

13 - expansion tank of the DHW circuit (hot water supply);

14 - DHW safety valve;

15 - DHW temperature sensor;

16 - anode;

17 - boiler;

18 - drain pipe;

19 - chimney casing;

20 - air pressure relay;

21 - expansion tank;

22 - heating sensor;

23 - heating safety thermostat;

24 - electrode;

25 - 3-way bypass valve;

26 - water pressure relay;

27 - pressure gauge;

28 - make-up tap;

29 - DHW circuit pump;

A - heating supply;

R - return heating supply;

F - cold water inlet;

C - hot water outlet.

Implementation of the invention

The invention is a boiler with a built-in boiler, made in a single housing, inside which are located: a double-circuit gas boiler and boiler 17, a safety group, connecting pipes and shut-off and control valves.

Boiler 17 is made in the form of a layered heating boiler, having a cold water supply pipe to the lower part of the boiler, a water intake pipe from the lower part of the boiler, connected through a DHW circuit pump 29 to a secondary heat exchanger 6 of the boiler.

The secondary heat exchanger 6 has a branch pipe connecting the hot water outlet from the secondary heat exchanger to the upper part of the boiler 17. At the same time, this branch pipe is equipped with an outlet C for hot water to the consumer.

Boiler 17 contains drain pipe 18, DHW safety valve 14, temperature sensor 15, anode protection 16 against corrosion, expansion tank of DHW circuit 13.

The safety group and shut-off and control valves contain: an electronic gas valve 5, designed with the possibility of connection to the gas supply pipeline, an air valve 7 of the main pump 8, a drain valve 9 of the main pump 8, a water flow limiter 11, installed at the outlet of hot water from the consumer, a safety valve 12 of the secondary heat exchanger 6, a heating sensor 22, a safety heating thermostat 23, a 3-way bypass valve 25, a water pressure relay 26, a pressure gauge 27, a make-up valve 28. The heating sensor 22 is a temperature sensor, designed with the possibility of transmitting information about the temperature to the boiler.

Heating supply A is connected to heating return R by bypass line 10.

The control of the boiler and water heater is located on the front panel of the housing.

The invention is an original design of a gas double-circuit boiler with a built-in stratified heating boiler. Namely, a design for providing hot water using a secondary heat exchanger of a double-circuit boiler and a built-in storage boiler of stratified heating. This solution allows you to have a sufficient supply of hot water for further consumption for domestic purposes. It also increases the service life of the boiler and the secondary heat exchanger of the boiler due to fewer turns on and off of the boiler to heat the water.

It should be noted that no direct analogous solutions have been identified from the state of the art. There are solutions for boilers with built-in water heaters, which use a different principle of heating water in the boiler, namely, heating water through a coil located inside the boiler, which passes hot water through the primary heat exchanger.

The boiler with a built-in stratified heating boiler is a single body, inside which there is a double-circuit wall-mounted gas boiler and a stratified heating boiler. In addition, the body contains a DHW expansion tank, a DHW pump, a safety group and connecting pipes. The control of the boiler and boiler is located on the front panel of the body.

The principle of hot water preparation is as follows: cold water coming into the boiler from the cold water supply system (CWS) (feed F) is fed into the secondary heat exchanger 6 of the boiler through pump 29 and returns back as heated water to the upper part of the boiler. In this case, the operation of the pump feeding water to the boiler 29 is regulated through the boiler control, where the required heating temperature is set. The heating temperature is controlled through the temperature sensor 15, which is located inside the boiler. As the water heats up, the boundary separating hot and cold water moves downwards. Hot water is removed from the upper part of the boiler through outlet C.

Using a secondary heat exchanger together with a layered heating boiler allows you to get hot water immediately after turning on the boiler. That is, hot water directly from the secondary heat exchanger gets into the upper layers of the boiler and can be used immediately. In the known level of technology, it is necessary to wait for the water in the boiler to heat up through the coil.

The proposed design of a boiler with a built-in boiler allows to overcome the shortcomings of the existing level of technology, to expand the arsenal of heating and hot water supply means - to create a gas double-circuit boiler with a built-in layered heating boiler, allowing to obtain hot water immediately after turning on the boiler.

A search of publicly available sources of information showed that the entire set of features of the proposed invention is not known or clearly evident from the state of the art, and therefore the invention meets the patentability conditions of “novelty” and “inventive step”.

The claimed invention consists of materials and elements that are standard for this field of technology and are interconnected in a certain way, i.e. it can be used in industry, which is why the invention meets the patentability requirement of “industrial applicability”.

It should be understood that after a specialist has reviewed the above description with an example of the implementation of the proposed invention, other changes, modifications and implementation options of the invention will become obvious to him. Thus, all such changes, modifications and implementation options, as well as other areas of application that do not differ from the essence of the present invention, should be considered protected by the present invention within the scope of the attached formula.

Claims (3)

1. A boiler with a built-in water heater, made in a single housing, inside which are located: a double-circuit gas boiler and a water heater, a safety group, connecting pipes and shut-off and control valves, characterized in that the water heater is made in the form of a layered heating water heater, having a cold water supply pipe to the lower part of the water heater, a water intake pipe from the lower part of the water heater, connected through a DHW circuit pump to a secondary heat exchanger of the boiler, having a pipe connecting the hot water outlet from the secondary heat exchanger to the upper part of the water heater, wherein this pipe is equipped with a hot water outlet to the consumer, and the water heater contains a drain pipe, a DHW safety valve, a temperature sensor, anode protection against corrosion, and a DHW circuit expansion tank. 2. A boiler with a built-in water heater according to item 1, characterized in that the safety group and shut-off and control valves contain: an electronic gas valve, an air valve, a drain valve, a water flow limiter, a secondary heat exchanger safety valve, a heating sensor, a safety heating thermostat, a 3-way bypass valve, a water pressure relay, a pressure gauge, and a make-up valve. 3. A boiler with a built-in water heater according to any of paragraphs 1 or 2, characterized in that the control of the operation of the boiler and water heater is located on the front panel of the housing.