Preheating structure for heating and ventilation engineering

Abstract

The utility model relates to the technical field of heating and ventilation system preheating equipment, in particular to a preheating structure for heating and ventilation engineering, which comprises a preheating box and a preheating air propelling box, the bottom end of the preheating box is communicated with a second air valve, the other end of the second air valve is communicated with a flange three-way pipe, and the left end of the flange three-way pipe is communicated with a first air valve. The right end of the flange three-way pipe communicates with the heating pipeline, the continuous heating boxes are arranged on the path of the heating pipeline at equal intervals in a communicating mode, the number of the preheating air propelling boxes is equal to that of the continuous heating boxes, and the right ends of the preheating air propelling boxes communicate with the left ends of the continuous heating boxes. According to the preheating structure for the heating and ventilation project, a preheating equipment branch pipeline is additionally arranged, air is supplied to preheating equipment through a draught fan, the temperature of input air is increased after the input air is heated through an electric heating wire, and fan systems and continuous heating electric heating wires of subsequent nodes can continuously supply heat to circulating air and enable the circulating air to continuously circulate in a pipe; therefore, the whole heating pipeline is preheated to a great extent, and the loss of heating heat is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of preheating equipment for a heating and ventilation system, in particular to a preheating structure for a heating and ventilation engineering project. Background Art

[0002] Most HVAC projects use water heating and gas heating, which circulate through a pipe system to provide heat to designated areas within a building facility. When the weather is cold, it can effectively increase the indoor temperature of the building facility. Compared with independent air conditioners, it has a wider temperature rise range and fewer heating source equipment, which facilitates temperature control of the building facility. It is a more advanced and efficient heating method, widely used in large facilities and residential buildings.

[0003] Most of the existing HVAC engineering systems only have a single heating function, but the piping system is usually large. Directly using low-temperature pipes for heating will produce a large amount of heat loss and cause waste of resources such as gas. Therefore, it is necessary to design a device that can preheat the piping system before the heating pipes are turned on.

[0004] In order to solve the above problems, we have made improvements and proposed a preheating structure for HVAC engineering. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model provides a preheating structure for HVAC engineering, comprising a preheating box and a preheating wind propulsion box, the bottom end of the preheating box is connected with a second air valve by bolt fixing, the other end of the second air valve is connected with a flange tee by bolt fixing, the left end of the flange tee is connected with a first air valve by bolt fixing, the right end of the flange tee is connected with a heating pipeline, and reheating boxes are connected at equal intervals on the path of the heating pipeline, the number of the preheating wind propulsion boxes is equal to the number of the reheating boxes, and the right end of the preheating wind propulsion box is connected with the left end of the reheating box by bolt fixing.

[0007] As a preferred technical solution of the utility model, a fan is fixedly connected to the top of the preheating box, and the fan is arranged in the air circulation space. The left end of the preheating air push box is fixedly connected to the heating pipe by bolts. A pipe temperature detector is provided at the left end of the preheating air push box. The probe of the pipe temperature detector passes through the heating pipe and is fixedly connected to the heating pipe by screws.

[0008] As a preferred technical solution of the utility model, two first filters are fixedly installed in parallel in the middle of the inner wall of the preheated air propulsion box, a bearing is fixedly welded in the middle of the first filter at the right end, and a motor is fixedly installed in the middle of the left side of the first filter at the left end.

[0009] As a preferred technical solution of the utility model, a fan is arranged between the two first filter screens, the right end of the fan shaft is rotatably connected to the first filter screens through a bearing, and the left end of the fan shaft is coaxially fixedly connected to the rotating shaft of the motor.

[0010] As a preferred technical solution of the utility model, a junction box is fixedly provided on the top surface of the heating box by bolts, and a rock wool layer is sheathed on the outer wall surface of the heating box.

[0011] As a preferred technical solution of the utility model, second filters are fixedly installed at the left and right ends of the interior of the reheating box, the first filter and the second filter are both made of metal, and an electric heating wire is arranged between the two second filters. The top of the electric heating wire is fixedly connected to the top of the inner wall of the reheating box and is electrically connected to the junction box. The structure of the preheating box is equal to that of the reheating box.

[0012] The beneficial effects of the utility model are as follows: the preheating structure for HVAC engineering adds a branch pipeline of preheating equipment to the HVAC heating pipeline system equipment, and the preheating equipment is supplied with air by a fan. The input air is heated up after being heated by the heating wire and enters the heating pipeline through the three-way pipe. The fan system of each subsequent node and the heating wire can continuously heat the circulating gas and make it continue to circulate in the pipe, thereby realizing the preheating of the entire heating pipeline to a great extent and effectively reducing the loss of heating heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a structural schematic diagram of a preheating structure for HVAC engineering of the utility model;

[0015] Figure 2 This is a schematic diagram of a pipe temperature detector with a preheating structure for HVAC engineering of the utility model;

[0016] Figure 3 It is a partial cross-sectional structural schematic diagram of a preheating structure for HVAC engineering of the utility model;

[0017] In the figure: 1. first air valve; 2. flange tee pipe; 3. second air valve; 4. preheating box; 5. fan; 6. pipeline temperature detector; 7. preheating air propulsion box; 8. reheating box; 9. first filter; 10. motor; 11. fan; 12. junction box; 13. rock wool layer; 14. second filter; 15. heating wire. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0019] Example: Figure 1-3 As shown, a preheating structure for HVAC engineering includes a preheating box 4 and a preheating wind propulsion box 7. The bottom end of the preheating box 4 is connected with a second air valve 3 by bolts, the other end of the second air valve 3 is connected with a flange tee pipe 2 by bolts, the left end of the flange tee pipe 2 is connected with a first air valve 1 by bolts, the left end of the first air valve 1 is connected with HVAC equipment, the right end of the flange tee pipe 2 is connected with a heating pipe, and a plurality of reheating boxes 8 are connected at equal intervals on the heating pipe path. The number of preheating wind propulsion boxes 7 is equal to the number of reheating boxes 8, and the right end of the preheating wind propulsion box 7 is connected with the left end of the reheating box 8 by bolts. During the preheating process, the first air valve 1 remains closed and the second air valve 3 is opened at the same time.

[0020] A fan 5 is fixedly connected to the top of the preheating box 4 and arranged in the air circulation space. When preheating starts, the fan 5 is started to transport air into the preheating box 4. The left end of the preheating air push box 7 is fixedly connected to the heating pipe by bolts. A pipeline temperature detector 6 is arranged on the left end of the preheating air push box 7. The probe of the pipeline temperature detector 6 passes through the heating pipe and is fixedly connected to the heating pipe by screws. After preheating starts, the temperature inside the pipe at each node position of the pipeline is continuously monitored.

[0021] Two first filters 9 are fixedly installed in parallel in the middle of the inner wall of the preheated air propulsion box 7. A bearing is fixedly welded in the middle of the first filter 9 on the right end, and a motor 10 is fixedly installed in the middle of the left side of the first filter 9 on the left end. The first filter 9 is responsible for blocking impurities with larger diameters and providing certain protection.

[0022] A fan 11 is arranged between the two first filters 9. The right end of the central axis of the fan 11 is rotatably connected to the first filter 9 through a bearing, and the left end of the central axis of the fan 11 is coaxially fixedly connected to the rotating shaft of the motor 10. After starting the motor 10, the fan 11 starts to rotate, so that air can continue to flow unidirectionally in a longer pipeline.

[0023] A junction box 12 is fixed on the top surface of the reheating box 8 by bolts, and a rock wool layer 13 is sheathed on the outer wall surface of the reheating box 8. The rock wool layer 13 provides a certain thermal insulation and constant temperature effect to reduce heat loss.

[0024] A second filter 14 is fixedly installed at both ends of the left and right sides of the reheating box 8. The first filter 9 and the second filter 14 are both made of metal. A heating wire 15 is arranged between the two second filters 14. The top of the heating wire 15 is fixedly connected to the top of the inner wall of the reheating box 8 and is electrically connected to the junction box 12. The structure of the preheating box 4 is the same as that of the reheating box 8. After the junction box 12 is connected to the external power supply and other equipment, the heating wire 15 can be started and the temperature of the heating wire 15 can be adjusted to heat the circulating air. The heated air continues to flow in the pipeline to preheat the pipeline as a whole.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A preheating structure for HVAC engineering, comprising a preheating box (4) and a preheating wind pushing box (7), characterized in that: The bottom end of the preheating box (4) is connected to a second air valve (3) by bolts, the other end of the second air valve (3) is connected to a flanged tee pipe (2) by bolts, the left end of the flanged tee pipe (2) is connected to a first air valve (1) by bolts, the right end of the flanged tee pipe (2) is connected to a heating pipe, and reheating boxes (8) are connected at equal intervals on the heating pipe path, the number of the preheating air propulsion boxes (7) is equal to the number of the reheating boxes (8), and the right end of the preheating air propulsion box (7) is connected to the left end of the reheating box (8) by bolts.

2. A preheating structure for HVAC engineering according to claim 1, characterized in that: The top of the preheating box (4) is fixedly connected to a fan (5), which is arranged in an air circulation space. The left end of the preheating air pushing box (7) is fixedly connected to the heating pipe by bolts. The left end of the preheating air pushing box (7) is provided with a pipe temperature detector (6). The probe of the pipe temperature detector (6) passes through the heating pipe and is fixedly connected to the heating pipe by screws.

3. A preheating structure for HVAC engineering according to claim 1, characterized in that: Two first filter screens (9) are fixedly installed in parallel in the middle of the inner wall of the preheated air propulsion box (7), a bearing is fixedly welded in the middle of the first filter screen (9) at the right end, and a motor (10) is fixedly installed in the middle of the left side of the first filter screen (9) at the left end.

4. A preheating structure for HVAC engineering according to claim 3, characterized in that: A fan (11) is arranged between the two first filter screens (9); the right end of the central axis of the fan (11) is rotatably connected to the first filter screen (9) via a bearing, and the left end of the central axis of the fan (11) is coaxially fixedly connected to the rotating shaft of the motor (10).

5. A preheating structure for HVAC engineering according to claim 4, characterized in that: A junction box (12) is fixedly arranged on the top surface of the heating extension box (8) by means of bolts, and a rock wool layer (13) is sleeved on the outer wall surface of the heating extension box (8).

6. A preheating structure for HVAC engineering according to claim 5, characterized in that: Second filters (14) are fixedly installed at both left and right ends inside the reheating box (8); the first filter (9) and the second filter (14) are both made of metal; an electric heating wire (15) is arranged between the two second filters (14); the top of the electric heating wire (15) is fixedly connected to the top of the inner wall of the reheating box (8) and is electrically connected to the junction box (12); the structure of the preheating box (4) is equal to that of the reheating box (8).

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