CN105795779B - A kind of solar heating bed based on daily variations heat demand - Google Patents

Abstract

The invention discloses a kind of solar heating bed based on daily variations heat demand, including bed body, bed body includes bed panel, bedrest, bed side plate, bed bottom plate, water conservancy diversion side plate and dividing plate, dividing plate is provided with dividing plate seam and lower air outlet, bed panel is placed on bedrest, bedrest is divided into two chambers up and down by dividing plate, and upper and lower two chambers are connected by the dividing plate seam on dividing plate；Wherein, installation pipe-coiling rack above the dividing plate of upper plenum, it is fixed with pipe-coiling rack in the coil pipe bed panel being connected with solar source and leaves groove, after bed panel is placed on bedrest, the groove in bed panel forms epicoele and the indoor upper air outlet communicated with the lower air outlet on water conservancy diversion side plate and dividing plate；Lower intracavitary is provided with blower fan, and the blower fan mouth being connected with blower fan is left on the bed side plate of bed body side, and the power supply of blower fan is inserted with being derived from.On the premise of using solar energy as thermal source, consider human body in different heat demands round the clock, flexible adjustment, it is easy to use, the energy can be saved to large extent.

Description

A solar heating bed based on diurnal differential heat demand

technical field

The invention belongs to the technical field of heating, relates to solar heating to solve the problem of human body's diurnal differential heating heat demand, in particular to a solar heating bed based on diurnal differential heat demand.

Background technique

Energy is an important material for human beings to survive. The use of fossil energy has degraded our living environment. The development and use of new energy has become a topic that all countries attach great importance to. Solar energy has obvious advantages in many new energy sources. Our country has developed rapidly in solar hot water supply and heating, and its energy-saving effect is obvious.

Traditional heating is mostly accompanied by high energy consumption and low comfort. Traditional radiator heating and floor radiant heating are continuous and comprehensive heating methods. This heating method often causes indoor overheating within a certain period of time, causing people to open windows to cool down, resulting in waste of heating energy consumption. Researchers have proposed some new heating methods, such as intermittent heating, low-temperature heating, local heating and so on. Low-temperature hot water floor radiant heating system, in the case of intermittent operation, through reasonable adjustment and control, the system can save heating energy consumption without affecting the thermal comfort of the room; for energy-saving residential buildings, the radiator heating system can It can save energy and reduce consumption, and improve indoor comfort; when local heating is used, the heat load of each heated room in the building is higher than that of the same room when it is fully heated, but the total load in the heating season is lower than that of a fully heated building. These new heating methods can achieve energy saving to a certain extent through reasonable measures. However, these heating methods do not take into account the difference in human heat demand between day and night, and the flexibility of adjustment is poor.

Under the background that energy saving has become a trend, how to save energy to the greatest extent becomes particularly important under the condition of satisfying the thermal comfort of human body in heating.

Contents of the invention

In order to save energy to the greatest extent, on the premise of using solar energy as the heat source, and considering the different thermal demands of the human body day and night, the purpose of the present invention is to propose a new type of solar heating bed based on the difference in thermal demand between day and night, which can Both local heating and overall heating are considered, and the adjustment is flexible and easy to use.

For realizing above-mentioned task, the present invention adopts following technical solution:

A solar heating bed based on diurnal heat demand difference, including a bed body, characterized in that:

The bed body includes a bed panel, a bed support, a bed side panel, a bed bottom plate, a flow guide side panel and a partition, the partition is provided with a partition seam and a lower air outlet, the bed panel is placed on the bed support, and the bed support It is divided into upper and lower cavities by the partition, and the upper and lower cavities are connected through the partition slit on the partition; among them, the coil rack is installed above the partition of the upper cavity, and the coil rack is fixed with a solar heat source. There is a groove on the coil bed panel. After the bed panel is placed on the bed support, the groove on the bed panel, the diversion side plate and the lower air outlet on the partition form an upper air outlet that communicates between the upper chamber and the room;

A blower fan is arranged in the lower chamber, and a blower port connected with the blower is left on the bed side plate on one side of the bed body, and the power supply of the blower fan is taken from the ground plug.

With the solar heating bed based on the difference in heat demand between day and night of the present invention, during the day, the lower air outlet is opened and the upper air outlet is closed, and the air in the room is blown into the upper cavity after being pressure equalized in the lower cavity, and is blown into the room after being heated by the coil, ensuring Indoor thermal comfort environment; at night, the upper air outlet is opened and the lower air outlet is closed, and warm air is blown to the quilt through the upper air outlet to ensure that the quilt is surrounded by warm air to meet the thermal comfort environment of the human body.

According to the present invention, the fan is a low-noise fan, which can be adjusted steplessly, and the power comes from the ground plug.

20mm thermal insulation material is pasted under the partition.

The upper air outlet is supported and opened by a short stick, and the opening and closing of the lower air outlet is controlled by a bolt.

The distance between the coiled pipe and the bed side board is 100mm.

The upper air outlet has an upper air outlet baffle, and the lower air outlet has a lower air outlet baffle.

The technical effect brought by the solar heating bed based on the heat demand difference between day and night of the present invention is:

First of all, the use of clean energy solar energy alleviates the crisis of environmental degradation and energy shortage. Secondly, combine local heating with overall heating. During the day, the indoor airflow is exchanged with the coil by the fan before being sent into the room to ensure that the entire room is in a comfortable environment. At night, only the quilt surface is heated to ensure that the human body can sleep comfortably. Environment. This avoids heating the entire room at night and saves heating energy consumption.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the solar heating bed based on diurnal heat demand difference of the present invention;

Fig. 2 is the horizontal cross-sectional schematic diagram of the solar heating bed based on day and night differential heat demand of the present invention;

Figure 3 is a large sample diagram of the daytime air outlet;

Figure 4 is a schematic diagram of coil fixing;

Figure 5 is a schematic diagram of fan fixing.

Fig. 6 is the temperature distribution diagram in the daytime room, wherein, (a) figure is the temperature distribution figure of room z=1.2m plane, (b) figure is the temperature distribution figure of room y=1.5m plane;

Fig. 7 is the temperature distribution figure in the room at night, wherein, (a) figure is the surface temperature distribution figure, (b) figure is the temperature distribution figure of the room z=0.6m plane, (c) figure is the room y=1.5m plane temperature distribution map.

The symbols in the figure represent respectively: 1. Bed panel, 2. Bed support, 3. Bed side board, 4. Fan outlet, 5. Bed bottom board, 6. Diversion side board, 7. Partition board seam, 8. Partition board, 9. Coil rack, 10. Lower air outlet, 11. Coil, 12. Groove, 13. Lower air outlet baffle, 14 Upper air outlet baffle, 15. Fabric, 16. Coil fixing piece, 17. Screw, 18, blower fan fixture, 19, blower fan, 20, rubber pad, 21, backing plate.

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

detailed description

The applicant's design idea is to install a low-noise stepless variable air volume fan under the bed body, divide the bed body into upper and lower chambers with a partition, turn on the fan, and blow air to the lower chamber. The coil connected to the solar heat source in the cavity exchanges heat with the blown airflow and enters the room through the air outlet. During the day, the air volume of the fan is increased, and the lower air outlet is opened, and the warm air is blown to the room to heat the indoor air; at night, the air volume of the fan is turned down, and the upper air outlet is opened, and the warm air is blown to the surrounding area of the quilt to heat the temperature of the quilt.

Referring to Fig. 1, the present embodiment provides a specific structure of a solar heating bed based on day and night differential heat demand, including a bed body, which includes a bed panel 1, a bed frame 2, a bed side panel 3, a bed bottom panel 5, a guide Flow side plate 6 and partition 8, partition 8 is provided with partition slit 7 and lower air outlet 10, bed panel 1 is placed on bed support 2, bed support 2 is divided into upper and lower chambers by partition 8, upper and lower The two cavities are connected through the partition slit 7 on the partition 8; wherein, a coil rack 9 is installed above the partition 8 of the upper cavity, and a coil 11 connected to a solar heat source is fixed on the coil rack 9, and the bed panel 1 has a groove 12, and after the bed panel 1 is placed on the bed support 2, the groove 12 on the bed panel 1, the guide side plate 6 and the lower air outlet 10 on the partition 8 form an upper chamber that communicates with the room. upper air outlet;

A blower fan 19 is provided in the lower cavity, and a blower outlet 4 communicating with the blower fan 19 is left on the bed side plate 3 on one side of the bed body, and the power supply of the blower blower 19 is taken from the ground plug.

In this embodiment, the fan 19 is a low-noise fan, which can be adjusted steplessly, and the power comes from the ground plug.

The distance between the coiled pipe 11 and the sideboard of the bed is 100 mm.

The insulation material of 20mm is pasted on the lower surface of the dividing plate 8 .

The upper air outlet is supported and opened by a short stick, and the opening and closing of the lower air outlet 10 is controlled by a bolt.

An upper air outlet baffle plate 14 is arranged on the upper air outlet. The lower air outlet 10 has a lower air outlet baffle 13 .

Referring to Fig. 2, Fig. 2 shows the positions of the upper and lower air outlets of the solar heating bed based on the difference in heat demand between day and night.

One side above described groove 12 is equipped with opening cover additionally, and this opening cover is the plywood of 3mm, and plywood is edge-sealed with rubber skin, and opening cover is connected with hinge, and hinge is all embedded in plywood, reduces gap.

Referring to Fig. 3, the upper air outlet baffle plate 14 is composed of two plywood boards of different lengths, the two plywood boards are connected by fabric 15 and fixed by hinges, the short plywood board is fixed on the bed panel 1, and the long plywood board is fixed on the bed support 2, there is a groove 12 on the bed panel 1, so that the upper air outlet baffle 14 can be embedded on the bed panel 1, and the opening of the upper air outlet baffle 14 is supported by a stick, and the opening angle is 30-45 degrees .

Referring to FIG. 4 , the coiled pipe 11 is fixed on the coiled pipe frame 9 by a coiled pipe fixing member 16 , and is firmly fixed by screws 17 .

Referring to FIG. 5 , the fan 19 is fixed on the backing plate 21 by the fan fixture 18 , there is also a layer of rubber pad 20 between the fan 19 and the backing plate 21 , and the backing plate 21 is fixed on the bed bottom plate 5 .

The present invention will be further described by specific examples below.

The solar heating bed based on the heat demand difference between day and night of the present invention is mainly aimed at the design of energy-saving residential buildings. During the day, the lower air outlet is opened, and the fan is adjusted to the daytime mode. Driven by the fan, the airflow enters the upper chamber through the gap of the partition, and blows into the room after exchanging heat with the coil to maintain the indoor temperature at about 18°C; while at night , the upper air outlet is turned on, and the fan is adjusted to night mode, which only keeps the temperature of the quilt surface at about 18°C, providing a comfortable sleeping environment.

According to the solar heating bed based on the heat demand difference between day and night of the present invention, the wood of the bed body is made of red pine wood, the density ρ is 377kg/m ³ , the thermal conductivity K is 0.11W/(m2·K), and the specific heat capacity c is 1930J/(kg· K). The coil 11 connected to the solar heat source is made of cross-linked polyethylene pipe PEX, with a density ρ of 940kg/m ³ , a thermal expansion coefficient of 0.20mm/(m·K), and a thermal conductivity K of 0.46W/(m ² · K).

Use Fluent software to simulate and analyze the day and night conditions, place the solar heating bed based on the difference in heat demand between day and night in a room with a size of 4m×3m×3m, open the lower air outlet during the day, and lie flat on the bed at night. Open the upper air outlet. The simulation results are shown in Figure 6 and Figure 7.

It can be seen from Figure 6 that most of the temperature in the room during the day is at 17.5°C, and the temperature near the outlet of the bed is higher. In addition, the temperature gradient of most spaces in the room during the day is relatively small, and there is only a large temperature gradient near the wall. Therefore, the solar heating bed based on the difference in heat demand between day and night of the present invention can meet the thermal comfort needs of the human body during the day .

It can be seen from Figure 7 that the temperature of the quilt surface at night can reach the indoor temperature for comfortable sleep of the human body. The average temperature is about 17.5°C, and the temperature gradient of the quilt surface is small. The larger temperature gradient at the place in contact with the bed shows that the design of the solar heated bed based on the diurnal differential heat demand of the present invention can make it possible to achieve the desired result at night.

In addition, in this group of working conditions, the average water temperature of the coil 11 during the day is 53°C, and the average water temperature of the coil 11 at night is 45°C. There is an adjustable space, and the user can set the appropriate temperature according to the hot and cold preferences.

Claims (7)

1. a kind of solar heating bed based on daily variations heat demand, including bed body, it is characterised in that：

Described bed body includes bed panel (1), bedrest (2), bed side plate (3), bed bottom plate (5), water conservancy diversion side plate (6) and dividing plate (8), dividing plate (8) is provided with dividing plate seam (7) and lower air outlet (10), bed panel (1) are placed on bedrest (2), bedrest (2) Two chambers up and down are divided into by dividing plate (8), upper and lower two chambers are connected by the dividing plate seam (7) on dividing plate (8)；Wherein, upper plenum Dividing plate (8) above installation pipe-coiling rack (9), be fixed with the coil pipe (11) being connected with solar source, bed surface on pipe-coiling rack (9) Groove (12) is left on plate (1), after bed panel (1) is placed on bedrest (2), groove (12) and water conservancy diversion in bed panel (1) Lower air outlet (10) on side plate (6) and dividing plate (8) forms the upper air outlet that epicoele communicates with interior；

Lower intracavitary is provided with blower fan (19), and the blower fan mouth (4) connected with blower fan (19) is left on the bed side plate (3) of bed body side, The power supply of blower fan (19) is inserted with being derived from.

2. the solar heating bed based on daily variations heat demand as claimed in claim 1, it is characterised in that described blower fan (19) low-noise fan is used.

3. the solar heating bed based on daily variations heat demand as claimed in claim 1, it is characterised in that the dividing plate (8) 20mm insulation material is pasted in lower surface.

4. the solar heating bed based on daily variations heat demand as claimed in claim 1, it is characterised in that go out on described Air port is supported by bat and opened, and the keying of lower air outlet (10) is controlled by latch.

5. the solar heating bed based on daily variations heat demand as claimed in claim 1, it is characterised in that described coil pipe (11) spacing apart from bed side plate (3) is 100mm.

6. the solar heating bed based on daily variations heat demand as claimed in claim 1, it is characterised in that go out on described There is uptake plate washer (14) on air port, lower air outlet (10) has lower air outlet baffle plate (13).

7. the solar heating bed based on daily variations heat demand as claimed in claim 1, it is characterised in that described groove (12) side above adds opening lid.